Author: "UFRGS" / Topic: business - Searchworks@Jio Institute Digital Library Search Results

Your search keyword '"UFRGS"' showing total 246 results

Start Over Author "UFRGS" Topic business

246 results on '"UFRGS"'

1. Correlated factors with body fat distribution in a pre- and post-menopausal cohort of Brazilian women

Author: Menopause Pggo Ufrgs, Isabella Osório Wender, Charles Francisco Ferreira, Maria Celeste Osório Wender, Mona Lúcia Dall`agno, Jéssica Zandoná, Fernanda Vargas Ferreira, and Pedro Do Valle Teichmann
Subjects: medicine.medical_specialty, business.industry, Obstetrics, Cohort, Obstetrics and Gynecology, Medicine, business, Pre and post, General Biochemistry, Genetics and Molecular Biology, Body fat distribution
Published: 2021
Full Text: View/download PDF

2. The effect of galsulfase enzyme replacement therapy on the growth of patients with mucopolysaccharidosis VI (Maroteaux-Lamy syndrome)

Author: Harmatz P1, Hendriksz CJ2, Lampe C3, McGill JJ4, Parini R5, Leão Teles E6, Valayannopoulos V7, Cole TJ8, Matousek R9, Graham S9, Guffon N10, Quartel A9, he MPS VI Study Group co investigators were Yasmina Amraoui, Children's Hospital, Md, University of Mainz, Germany, Laila, Arash, Children's Hospital, University of Mainz, Germany, Javier Arroyo, Md, Hospital San Pedro de Alcantara, Hospital de día de Pediatría, Caceres, Spain, Ana, Cecliaíazevedo, Serviço de Genética Médica/HCPA, Md, Department of Genetics/UFRGS, Porto Alegre, Brazil, Barone, RITA MARIA ELISA, Department of Pediatrics, Md, University of Catania, Catania, Italy, Michael Beck, Md, D. N. Bennett Jones, Md, Consultant General Renal Physician, Whitehaven, Philippe Bernard, Md, Centre Hospitalier d'Arras, Arras, France, Thierry Billette de Villemeur, Hôpital Trousseau, Paris, France, Raquel, Boy, Hospital Universitário Pedro Ernesto, Md, Rio de Janeiro, Brazil, Susan, Conrad, Research Center Oakland, Oakland, Ca, Usa, Eduardo Coopman, Md, Hospital del Cobre D. e. Salvador, Calama, Chile, Agata Fiumara, Md, Department of Pediatrics, University of Catania, Catania, Italy, William, Frischman, The Townsville Hospital, Md, Townsville, Australia, Roberto, Giugliani, Phd, Md, Serviço de Genética Médica/HCPA, Department of Genetics/UFRGS, Porto Alegre, Brazil, Elio Gizzi, Md, Children's Hospital Research Center Oakland, Oakland, Usa, Ca, Paul, Harmatz, John J. Hopwood, Department of Genetic Medicine, Women'S, Children's Hospital Adelaide, North Adelaide, Australia, Simon Jones, Md, Royal Manchester Children's Hospital, Manchester, Paige Kaplan, Children's Hospital of Philadelphia, Philadelphia, Pa, Laura Keppen, Md, Department of Pediatrics, University of South Dakota School of Medicine, Sioux Falls, Sd, David Ketteridge, Department of Genetic Medicine, Prof Rudolf Korinthenberg, Universitätsklinikum Freiburg, Zentrum für Kinderheilkunde und Jugendmedizin, Klinik II Neuropädiatrie und Muskelerkrankungen, Freiburg, Germany, Michel, Kretz, Hôpital Civil de Colmar, Md, Le Parc Centre de la Mère et de l'Enfant, Colmar, Elisa Leão Teles, Md, Unidade de Doenças Metabólicas, Departamento Pediatria, Hospital de Sao João, Porto, Portugal, Claudia Lee, Mph, Shuan Pei Lin, MacKay Memorial Hospital, Md, Department of Genetics, Taipei, Taiwan, Lionel Lubitz, Md, Royal Children's Hospital, Melbourne, Ana Maria Martins, Md, Unifesp, Instituto de Oncologia Pediátrica, Graacc/unifesp, Departamento de Pediatria, São Paulo, Brazil, Clara Sá Miranda, M., Unidade de Biologia do Lisossoma e. Peroxisoma, Md, Instituto de Biologia Molecular e. Celular, Porto, Stephanie Oates, RN Department of Genetic Medicine, Anne O'Meara, Md, Our Lady's Hospital for Sick Children, Dublin, Ireland, Ans van der Ploeg, Md, Erasmus MC University Medical Center, Rotterdam, The, Netherlands, Isabel Cristina Neves de Souza, Md, Universidade Federal do Pará, Centro de Ciências Biológicas, Hospital Universitário João de Barros Barreto, Belém, Ray Pais, Md, Pediatric Hematology/Oncology, East Tennessee Children's Hospital, Knoxville, Tn, Gregory Pastores, Md, Phd, NYU Medical Center, Rusk Institute, New York, Usa, Ny, Lorenzo, Pavone, Barbara Plecko, U. n. i. v. Klinik fur Kinder und Jugendheilkunde, Graz, Austria, Silvio, Pozzi, Ospedale Vito Fazzi, Md, UO Pediatria, Lecce, Uwe Preiss, Md, Universitaetsklinik und Poliklinik fuer Kinder, Halle, Emerson Santana Santos, Md, Fundação Universidade de Ciências da Saúde de Alagoas Governador, Departamento de Pediatria, Maceió, Brazil, Maurizio, Scarpa, Department of Pediatrics, University of Padova, Padova, Italy, Schwartz, Ida Vanessa D., David, Sillence, Westmead, Australia, Luiz Carlos Santana da Silva, Phd, Universidade Federal do Pará, Centro de Ciências Biológicas, Hospital Universitário João de Barros Barreto, Belém, Brazil, Julie, Simon, Children's Hospital, Rn, Prof Giovanni Sorge, Department of Pediatrics, Robert Steiner, Departments of Pediatrics, Molecular, Medical, Genetics, Oregon Health Science University, Portland, Usa, Or, Valadares, Eugênia R., Hospital das Clínicas, Faculdade de Medicina da Universidade Federal de Minas Gerais UFMG, Avenida Professor Alfredo Balena, Belo Horizonte Minas Gerais, Bonito Victor, Md, Lewis Waber, Md, Phd, Pediatric Genetics, Metabolism, University of Texas Southwest Medical Center, Dallas, Usa, Tx, John, Waterson, Whitley, Chester B., University of Minnesota Medical School, Minneapolis, Usa, Mn, Edmond Wraith, J., Royal Manchester Children's Hospital, Md, and Manchester, U. k.
Subjects: 0301 basic medicine, Arylsulfatase B, Male, Lysosomal storage disorder, N-Acetylgalactosamine-4-Sulfatase, Endocrinology, Diabetes and Metabolism, Mucopolysaccharidosis, Growth, Biochemistry, Gastroenterology, chemistry.chemical_compound, Endocrinology, Child, Mucopolysaccharidosis VI, Age Factors, Enzyme replacement therapy, Recombinant Proteins, Diabetes and Metabolism, Galsulfase, Height, Maroteaux-Lamy syndrome, Molecular Biology, Genetics, Child, Preschool, Female, medicine.symptom, medicine.medical_specialty, Adolescent, Urinary system, Short stature, 03 medical and health sciences, Internal medicine, medicine, Humans, Enzyme Replacement Therapy, Creatinine, business.industry, Infant, Newborn, Infant, medicine.disease, Body Height, Maroteaux–Lamy syndrome, 030104 developmental biology, chemistry, Immunology, business, Follow-Up Studies
Abstract: Mucopolysaccharidosis (MPS) VI is an autosomal recessive lysosomal storage disorder arising from deficient activity of N-acetylgalactosamine-4-sulfatase (arylsulfatase B) and subsequent intracellular accumulation of the glycosaminoglycans (GAGs) dermatan sulfate and chondroitin-4-sulfate. Manifestations are multi-systemic and include skeletal abnormalities such as dysostosis multiplex and short stature. Reference height-for-age growth charts for treatment-naive MPS VI patients have been published for both the slowly and rapidly progressing populations. Categorization of disease progression for these charts was based on urinary GAG (uGAG) level; high (>200μg/mg creatinine) levels identified subjects as rapidly progressing. Height data for 141 patients who began galsulfase treatment by the age of 18years were collected and stratified by baseline uGAG level and age at ERT initiation in 3-year increments. The reference MPS VI growth charts were used to calculate change in Z-score from pre-treatment baseline to last follow-up. Among patients with high baseline uGAG levels, galsulfase ERT was associated with an increase in Z-score for those beginning treatment at 0-3, >3-6, >6-9, >9-12, and >12-15years of age (p
Published: 2017

3. Early Reliability Evaluation of a Biomedical System

Author: Massimo Violante, M. Sonza Reorda, H. Hakobyan, and P. Rech Ufrgs
Subjects: Engineering, Software, Unified Modeling Language, business.industry, Robustness (computer science), Embedded system, Design flow, Architecture, business, computer, computer.programming_language, Reliability engineering
Abstract: Early reliability evaluation for safety-critical applications is crucial, since it may allow to spot critical parts of the design and to introduce suitable countermeasures. In some domains it is common to adopt a design flow exploiting a high-level description of the system behavior and architecture; out of this description, suitable tools then automatically generate the software (and eventually the hardware) needed to perform the required tasks. This paper describes an enhanced version of such a design flow in which reliability is also considered and evaluated. The model of a pacemaker is developed and used for early estimation of its robustness with respect to a subset of the possible faults. The paper highlights why it is important to take into account the environment the target system is designed to interact with (in this case the heart), thus making possible to identify the most critical faults, based on the severity of their effects.
Published: 2014

4. Analysis of referrals to the stomatology service in a Southern Brazilian hospital: a retrospective study

Author: Gisele Corrêa de Oliveira ZIGMUNDO, Tuany Rafaeli SCHMIDT, Felipe Martins SILVEIRA, Matheus NEVES, Marco Antônio Trevizani MARTINS, Vinicius Coelho CARRARD, Manoela Domingues MARTINS, ZIGMUNDO Gisele Corrêa de Oliveira, Universidade Federal do Rio Grande do Sul – UFRGS, School of Dentistry, Department of Oral Pathology, Porto Alegre, RS, Brazil., SCHMIDT Tuany Rafaeli, Universidade Federal do Rio Grande do Sul – UFRGS, School of Dentistry, Department of Oral Pathology, Porto Alegre, RS, Brazil., SILVEIRA Felipe Martins, Universidade Estadual de Campinas, Piracicaba Dental School, Department of Oral Diagnosis, Piracicaba, SP, Brazil., NEVES Matheus, Universidade Federal do Rio Grande do Sul – UFRGS, School of Dentistry, Department of Preventive Dentistry, Porto Alegre, RS, Brazil., MARTINS Marco Antônio Trevizani, Hospital de Clínicas de Porto Alegre – HCPA, Department of Stomatology, Porto Alegre, RS, Brazil., CARRARD Vinicius Coelho, Universidade Federal do Rio Grande do Sul – UFRGS, School of Dentistry, Department of Oral Pathology, Porto Alegre, RS, Brazil., and MARTINS Manoela Domingues, Universidade Federal do Rio Grande do Sul – UFRGS, School of Dentistry, Department of Oral Pathology, Porto Alegre, RS, Brazil.
Subjects: Adult, Male, medicine.medical_specialty, Oncologia, Adolescent, Hospitalized patients, Epidemiology, Stomatology, Oral Medicine, Specialty, DERIVACION Y CONSULTA, Medical Oncology, Medicina bucal, Young Adult, 03 medical and health sciences, 0302 clinical medicine, Humans, Medicine, General Materials Science, 030212 general & internal medicine, Epidemiologia, Child, Referral and Consultation, MEDICINA ORAL, Retrospective Studies, ESTUDIOS TRANSVERSALES, Stomatitis, Estomatite, Descriptive statistics, business.industry, ESTUDIOS RETROSPECTIVOS, RK1-715, Mean age, Retrospective cohort study, 030206 dentistry, Middle Aged, Hospitals, Cross-Sectional Studies, HOSPITALES, Dentistry, Family medicine, business, Oral medicine, Brazil
Abstract: This paper intends to describe the demand for referrals to the stomatology service requested by the medical teams for inpatients in a reference hospital in the south of Brazil. This research is a retrospective cross-sectional descriptive study focusing on data collection and assessment of information about referrals to the stomatology unit carried out from January 2008 to December 2018. All information was obtained from the hospital management software database, then transferred and analyzed individually for descriptive statistics. A total of 4433 cases were referred to the stomatology team, with an average of 403 cases by year. Hematology/hemato-oncology (37.3%) was the specialty asking for the majority of the referrals, followed by Oncology (20.4%) and Pneumology (8.2%). The mean patients’ profile was males (55.5%), receiving a diagnosis of oral mucositis (43.5%), and with the first and second decades of life being the most prevalent ones (34.9%), with a mean age of 34.8±22.3 years. The most common treatment performed by the stomatology team was the photobiomodulation therapy (44.8%). This retrospective study demonstrated the important profile of the stomatological care in hospitalized patients from a specific hospital, especially referred by the hematology/hemato-oncology team. These results evidenced the importance of the stomatology specialty in the hospital environment.
Published: 2021

5. Enteric methane mitigation strategies for ruminant livestock systems in the Latin America and Caribbean region: a meta-analysis

Author: Paulo Henrique Mazza Rodrigues, Jaime Ricardo Rosero-Noguera, Fábio Luis Henrique, André Bannink, Marcos Inácio Marcondes, Isabel Cristina Molina-Botero, Laura Bibiana Gualdrón-Duarte, Medardo Antonio Díaz Céspedes, Laura Astigarraga, María Paz Tieri, Víctor Ilich Alvarado Bolovich, Alexander N. Hristov, Xiomara Gaviria-Uribe, Telma Teresinha Berchielli, Adibe Luiz Abdalla, María Fernanda Vázquez-Carrillo, Roberto Soto-Blanco, Ana Luiza Costa Cruz Borges, F.A.S. Silva, Olga Lucía Mayorga Mogollón, Mohammed Benaouda, José Gere, L. S. Sakamoto, Thierry Ribeiro Tomich, Sandra Lucía Posada-Ochoa, Alda Lúcia Gomes Monteiro, Jacobo Arango, Luiz Gustavo Ribeiro Pereira, María Esperanza Cerón-Cucchi, Lucia Galvão de Albuquerque, Luiza Ilha Borges, Patrícia Perondi Anchão Oliveira, Octavio Alonso Castelán-Ortega, Sebastiao de Campos Valadares-Filho, Rafael Jiménez-Ocampo, Andrea Milena Sierra-Alarcón, Alexandre Berndt, Ricardo Reis e Silva, Sergio Abarca-Monge, Adibe Luiz Abdalla-Filho, Luis Alfonso Giraldo Valderrama, Ana Cláudia Ruggieri, Lorena Inés Mestra-Vargas, Carlos Alfredo Gómez-Bravo, Paulo César de Faccio Carvalho, Maria Eugênia Zerlotti Mercadante, Gustavo Jaurena, Abmael da Silva Cardoso, Rogério Martins Maurício, Juan Carlos Ku-Vera, Guilhermo Francklin de Souza Congio, Fernanda Samarini Machado, Ricardo Andrade Reis, Diego Zanetti, M. B. Chiavegato, María Paula Juliarena, Patricia Ricci, Sila Carneiro da Silva, Jusiane Rossetto, Ever del Jesus Flores-Santiago, Mariana Magalhães Campos, Flávio Perna Júnior, Tainá Silvestre Moreira, Claudia Janeth Ariza-Nieto, Jean Victor Savian, Helena Ferreira Lage, Juliana Duarte Messana, Banira Lombardi, Camila Muñoz, Rolando Barahona-Rosales, Henrique Mendonça Nunes Ribeiro-Filho, Olegario Hernández, Abimael Ortiz-Chura, João Paulo Pacheco Rodrigues, Horacio Leandro Gonda, Tibaitatá, Universidade de São Paulo (USP), Wageningen University & Research, The Pennsylvania State University, University of Buenos Aires (UBA), Swedish University of Agricultural Sciences, National Technological University (UTN), National Scientific and Technical Research Council (CONICET), National Institute of Agricultural Technology (INTA) (INTA–CONICET), Dairy Value Chain Research Institute (IDICAL) (INTA–CONICET), UTN, INTA, National University of the Centre of the Buenos Aires Province (UNCPBA), Empresa Brasileira de Pesquisa Agropecuária (EMBRAPA), Associated Colleges of Uberaba (FAZU), Universidade Federal do Paraná (UFPR), Santa Catarina State University (UDESC), Universidade Federal de Viçosa (UFV), São Paulo Agribusiness Technology Agency (APTA), Universidade Estadual Paulista (Unesp), Federal University of Rio Grande do Sul (UFRGS), National Institute of Agricultural Research (INIA) Treinta y Tres, Universidade Federal de Sergipe (UFS), Federal University of Southern and Southeastern Pará (UNIFESSPA), Universidade Federal de Minas Gerais (UFMG), Newton Paiva University, The Ohio State University, Science and Technology of Southern Minas Gerais, INIA Remehue, Turipaná, National Agrarian University La Molina (UNALM), Universidad Nacional de Colombia (UNAL), International Center for Tropical Agriculture (CIAT), University of Antioquia (UdeA), National Institute of Innovation and Agricultural Technology Transfer (INTA), University of Yucatan (UADY), Experimental Field Valle del Guadiana, South-Southeast Regional Unit (URUSSE), Autonomous University of the State of Mexico (UAEMex), and Environment (INRAE), AgroSup Dijon, University of the Republic of Uruguay (UdelaR), GUILHERMO FRANCKLIN DE SOUZA CONGIO, USP, ANDRÉ BANNINK, Wageningen University & Research, OLGA LUCÍA MAYORGA MOGOLLÓN, AGROSAVIA, GUSTAVO JAURENA, Universidade de Buenos Aires, HORACIO GONDA, Swedish University of Agricultural Sciences, JOSÉ IGNACIO GERE, National Technological University, Argentina / National Scientific and Technical Research Council, MARÍA ESPERANZA CERÓN-CUCCHI, National Institute of Agricultural Technology, ABIMAEL ORTIZ-CHURA, National Institute of Agricultural Technology, MARÍA PAZ TIERI, Dairy Value Chain Research Institute / National Technological University, Argentina, OLEGARIO HERNÁNDEZ, INTA, PATRICIA RICCI, National Scientific and Technical Research Council / INTA, MARÍA PAULA JULIARENA, National Scientific and Technical Research Council / National University of the Centre of the Buenos Aires Province, BANIRA LOMBARDI, National Scientific and Technical Research Council / National University of the Centre of the Buenos Aires Province, ADIBE LUIZ ABDALLA, USP, ADIBE LUIZ ABDALLA-FILHO, USP, ALEXANDRE BERNDT, CPPSE, PATRÍCIA PERONDI ANCHÃO OLIVEIRA, CPPSE, FÁBIO LUIS HENRIQUE, FAZU, ALDA LÚCIA GOMES MONTEIRO, UFPR, LUIZA ILHA BORGES, UFPR, HENRIQUE MENDONÇA NUNES RIBEIRO-FILHO, UDESC, LUIZ GUSTAVO RIBEIRO PEREIRA, CNPGL, THIERRY RIBEIRO TOMICH, CNPGL, MARIANA MAGALHÃES CAMPOS, CNPGL, FERNANDA SAMARINI MACHADO, CNPGL, MARCOS INÁCIO MARCONDES, UFV, MARIA EUGÊNIA ZERLOTTI MERCADANTE, APTA, LEANDRO SANNOMIYA SAKAMOTO, APTA, LUCIA GALVÃO ALBUQUERQUE, UNESP, PAULO CÉSAR DE FACCIO CARVALHO, UFRGS, JUSIANE ROSSETTO, UFRGS, JEAN VÍCTOR SAVIAN, UFRGS / Instituto Nacional de Pesquisa Agropecuária do Uruguai, PAULO HENRIQUE MAZZA RODRIGUES, USP, FLÁVIO PERNA JÚNIOR, USP, TAINÁ SILVESTRE MOREIRA, Universidade Estadual da Pensilvânia / USP, ROGÉRIO MARTINS MAURÍCIO, UFSJ, JOÃO PAULO PACHECO RODRIGUES, UNIFESSPA, ANA LUIZA DA COSTA CRUZ BORGES, UFMG, RICARDO REIS E SILVA, UFMG, HELENA FERREIRA LAGE, Universidade Newton Paiva, RICARDO ANDRADE REIS, UNESP, ANA CLÁUDIA RUGGIERI, UNESP, ABMAEL DA SILVA CARDOSO, UNESP, SILA CARNEIRO DA SILVA, USP, MARÍLIA BARBOSA CHIAVEGATO, Universidade Estadual de Ohio, SEBASTIÃO DE CAMPOS VALADARES-FILHO, UFV, FLÁVIA ADRIANE DE SALES SILVA, UFV, DIEGO ZANETTI, IFSULDEMINAS, TELMA TERESINHA BERCHIELLI, UNESP, JULIANA DUARTE MESSANA, UNESP, CAMILA MUÑOZ, INIA Remehue, CLAUDIA JANETH ARIZA-NIETO, AGROSAVIA, ANDREA MILENA SIERRA-ALARCÓN, AGROSAVIA, LAURA BIBIANA GUALDRÓN-DUARTE, AGROSAVIA, LORENA INÉS MESTRA-VARGAS, AGROSAVIA, ISABEL CRISTINA MOLINA-BOTERO, Universidade Nacional Agrária La Molina, ROLANDO BARAHONA-ROSALES, Universidade Nacional da Colômbia, JACOBO ARANGO, Centro Internacional de Agricultura Tropical (CIAT), XIOMARA GAVIRIA-URIBE, Universidade Nacional da Colombia / Centro Internacional de Agricultura Tropical (CIAT), LUIS ALFONSO GIRALDO VALDERRAMA, Universidade Nacional da Colombia, JAIME RICARDO ROSERO-NOGUERA, Universidade de Antioquia, SANDRA LUCÍA POSADA-OCHOA, Universidade de Antioquia, SERGIO ABARCA-MONGE, INTA, ROBERTO SOTO-BLANCO, INTA, JUAN CARLOS KU-VERA, Universidade de Yucatán, RAFAEL JIMÉNEZ-OCAMPO, Universidade de Yucatán / Instituto Nacional de Investigação Florestal, Agrícola e Pecuária (INIFAP), EVER DEL JESUS FLORES-SANTIAGO, Universidade de Yucatán / Universidade Autónoma de Chapingo, OCTAVIO ALONSO CASTELÁN-ORTEGA, Universidade Autónoma do Estado do México, MARÍA FERNANDA VÁZQUEZ-CARRILLO, Universidade Autónoma do Estado do México, MOHAMMED BENAOUDA, French National Research Institute for Agriculture, Food, and Environment (INRAE) / AgroSup Dijon, CARLOS ALFREDO GÓMEZ-BRAVO, Universidade Nacional Agrária La Molina, VÍCTOR ILICH ALVARADO BOLOVICH, Universidade Nacional Agrária La Molina, MEDARDO ANTONIO DÍAZ CÉSPEDES, Universidade Nacional Agrária La Molina, LAURA ASTIGARRAGA, Universidade da República do Uruguai, and ALEXANDER NIKOLOV HRISTOV, Universidade Estadual da Pensilvânia.
Subjects: Mitigação, Animal breeding, Animal Nutrition, Mitigation, 020209 energy, Strategy and Management, SHEPP, Efeito Estufa, Enteric methane, Context (language use), 02 engineering and technology, Beef cattle, Biology, Industrial and Manufacturing Engineering, Animal science, Ruminant, Grazing, Greenhouse gas emissions, 0202 electrical engineering, electronic engineering, information engineering, Metano entérico, Aquecimento global, Dairy cattle, 0505 law, General Environmental Science, Bovino, Sheep, Emissões de gases com efeito de estufa, Ovelha, Renewable Energy, Sustainability and the Environment, business.industry, Global warming, 05 social sciences, Building and Construction, biology.organism_classification, Diervoeding, Metano, Breed, purl.org/becyt/ford/4.2 [https], 050501 criminology, WIAS, Livestock, Cattle, business, Methane, OVINOS, purl.org/becyt/ford/4 [https]
Abstract: Latin America and Caribbean (LAC) is a developing region characterized for its importance for global food security, producing 23 and 11% of the global beef and milk production, respectively. The region's ruminant livestock sector however, is under scrutiny on environmental grounds due to its large contribution to enteric methane (CH4) emissions and influence on global climate change. Thus, the identification of effective CH4 mitigation strategies which do not compromise animal performance is urgently needed, especially in context of the Sustainable Development Goals (SDG) defined in the Paris Agreement of the United Nations. Therefore, the objectives of the current study were to: 1) collate a database of individual sheep, beef and dairy cattle records from enteric CH4 emission studies conducted in the LAC region, and 2) perform a meta-analysis to identify feasible enteric CH4 mitigation strategies, which do not compromise animal performance. After outlier's removal, 2745 animal records (65% of the original data) from 103 studies were retained (from 2011 to 2021) in the LAC database. Potential mitigation strategies were classified into three main categories (i.e., animal breeding, dietary, and rumen manipulation) and up to three subcategories, totaling 34 evaluated strategies. A random effects model weighted by inverse variance was used (Comprehensive Meta-Analysis V3.3.070). Six strategies decreased at least one enteric CH4 metric and simultaneously increased milk yield (MY; dairy cattle) or average daily gain (ADG; beef cattle and sheep). The breed composition F1 Holstein × Gyr decreased CH4 emission per MY (CH4IMilk) while increasing MY by 99%. Adequate strategies of grazing management under continuous and rotational stocking decreased CH4 emission per ADG (CH4IGain) by 22 and 35%, while increasing ADG by 22 and 71%, respectively. Increased dietary protein concentration, and increased concentrate level through cottonseed meal inclusion, decreased CH4IMilk and CH4IGain by 10 and 20% and increased MY and ADG by 12 and 31%, respectively. Lastly, increased feeding level decreased CH4IGain by 37%, while increasing ADG by 171%. The identified effective mitigation strategies can be adopted by livestock producers according to their specific needs and aid LAC countries in achieving SDG as defined in the Paris Agreement. Fil: Congio, Guilhermo Francklin de Souza. Universidade do Sao Paulo. Escola Superior de Agricultura Luiz de Queiroz; Brasil. Corporación Colombiana de Investigación Agropecuaria; Colombia Fil: Bannink, André. University of Agriculture Wageningen; Países Bajos Fil: Mayorga Mogollón, Olga Lucía. Corporación Colombiana de Investigación Agropecuaria; Colombia Fil: Jaurena, Gustavo. Universidad de Buenos Aires. Facultad de Agronomia. Departamento de Producción Animal. Cátedra de Nutrición Animal; Argentina Fil: Gonda, Horacio Leandro. Uppsala Universitet; Suecia Fil: Gere, José Ignacio. Instituto Nacional de Tecnología Agropecuaria. Centro de Investigación en Ciencias Veterinarias y Agronómicas. Instituto de Patobiología Veterinaria - Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Instituto de Patobiología Veterinaria; Argentina Fil: Cerón Cucchi, María Esperanza. Instituto Nacional de Tecnología Agropecuaria. Centro de Investigación en Ciencias Veterinarias y Agronómicas. Instituto de Patobiología; Argentina Fil: Ortiz Chura, Abimael. Instituto Nacional de Tecnología Agropecuaria. Centro de Investigación en Ciencias Veterinarias y Agronómicas. Instituto de Patobiología; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina Fil: Tieri, María Paz. Universidad Tecnológica Nacional. Facultad Regional Rafaela; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigación de la Cadena Láctea. - Instituto Nacional de Tecnología Agropecuaria. Centro Regional Santa Fe. Estación Experimental Agropecuaria Rafaela. Instituto de Investigación de la Cadena Láctea; Argentina Fil: Hernandez, Olegario. Instituto Nacional de Tecnología Agropecuaria. Centro Regional Tucuman-Santiago del Estero; Argentina Fil: Ricci, Patricia. Instituto Nacional de Tecnologia Agropecuaria. Centro Regional Buenos Aires Sur. Estacion Experimental Agropecuaria Balcarce. Instituto de Innovación Para la Producción Agropecuaria y El Desarrollo Sostenible. Grupo Vinculado Estacion Experimental Agropecuaria Cuenca del Salado Al Ipads | Consejo Nacional de Investigaciones Cientificas y Tecnicas. Centro Cientifico Tecnologico Conicet - Mar del Plata. Instituto de Innovación Para la Producción Agropecuaria y El Desarrollo Sostenible. Grupo Vinculado Estacion Experimental Agropecuaria Cuenca del Salado Al Ipads.; Argentina Fil: Juliarena, María Paula. Universidad Nacional del Centro de la Provincia de Buenos Aires. Centro de Investigaciones en Física e Ingeniería del Centro de la Provincia de Buenos Aires. - Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tandil. Centro de Investigaciones en Física e Ingeniería del Centro de la Provincia de Buenos Aires. - Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas. Centro de Investigaciones en Física e Ingeniería del Centro de la Provincia de Buenos Aires; Argentina Fil: Lombardi, Banira. Universidad Nacional del Centro de la Provincia de Buenos Aires. Centro de Investigaciones en Física e Ingeniería del Centro de la Provincia de Buenos Aires. - Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tandil. Centro de Investigaciones en Física e Ingeniería del Centro de la Provincia de Buenos Aires. - Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas. Centro de Investigaciones en Física e Ingeniería del Centro de la Provincia de Buenos Aires; Argentina Fil: Abdalla, Adibe Luiz. Universidade de Sao Paulo; Brasil Fil: Abdalla Filho, Adibe Luiz. Universidade de Sao Paulo; Brasil Fil: Berndt, Alexandre. Ministerio da Agricultura Pecuaria e Abastecimento de Brasil. Empresa Brasileira de Pesquisa Agropecuaria; Brasil Fil: Oliveira, Patrícia Perondi Anchão. Ministerio da Agricultura Pecuaria e Abastecimento de Brasil. Empresa Brasileira de Pesquisa Agropecuaria; Brasil Fil: Henrique, Fábio Luis. Colegios Asociados de Uberaba; Brasil Fil: Monteiro, Alda Lúcia Gomes. Universidade Federal do Paraná; Brasil Fil: Borges, Luiza Ilha. Universidade Federal do Paraná; Brasil Fil: Ribeiro Filho, Henrique Mendonça Nunes. Universidade Federal de Santa Catarina; Brasil Fil: Ribeiro Pereira, Luiz Gustavo. Ministerio da Agricultura Pecuaria e Abastecimento de Brasil. Empresa Brasileira de Pesquisa Agropecuaria; Brasil Fil: Tomich, Thierry Ribeiro. Ministerio da Agricultura Pecuaria e Abastecimento de Brasil. Empresa Brasileira de Pesquisa Agropecuaria; Brasil Fil: Campos, Mariana Magalhães. Ministerio da Agricultura Pecuaria e Abastecimento de Brasil. Empresa Brasileira de Pesquisa Agropecuaria; Brasil Fil: Machado, Fernanda Samarini. Ministerio da Agricultura Pecuaria e Abastecimento de Brasil. Empresa Brasileira de Pesquisa Agropecuaria; Brasil Fil: Marcondes, Marcos Inácio. Universidade Federal de Viçosa.; Brasil Fil: Mercadante, Maria Eugênia Zerlotti. Agencia de Tecnología Agroindustrial de Sao Paulo; Argentina Fil: Sakamoto, Leandro Sannomiya. Agencia de Tecnología Agroindustrial de Sao Paulo; Argentina Fil: Albuquerque, Lucia Galvão. Universidade Estadual Paulista Julio de Mesquita Filho; Brasil Fil: Carvalho, Paulo César de Faccio. Universidade Federal do Rio Grande do Sul; Brasil Fil: Hristov, Alexander Nikolov. State University of Pennsylvania; Estados Unidos. University of Agriculture Wageningen; Países Bajos. Universidade de Sao Paulo; Brasil. Corporación Colombiana de Investigación Agropecuaria; Colombia
Published: 2021

6. Measuring phenology uncertainty with large scale image processing

Author: Guilherme Rezende Alles, Lucas Mello Schnorr, Jean-Marc Vincent, Shin Nagai, João Luiz Dihl Comba, Instituto de Informática da UFRGS (UFRGS), Universidade Federal do Rio Grande do Sul [Porto Alegre] (UFRGS), Performance analysis and optimization of LARge Infrastructures and Systems (POLARIS), Inria Grenoble - Rhône-Alpes, Institut National de Recherche en Informatique et en Automatique (Inria)-Institut National de Recherche en Informatique et en Automatique (Inria)-Laboratoire d'Informatique de Grenoble (LIG), Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP ), Université Grenoble Alpes (UGA)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP ), Université Grenoble Alpes (UGA), Research Institute for Global Change (RIGC), and Japan Agency for Marine-Earth Science and Technology (JAMSTEC)
Subjects: 0106 biological sciences, Computer science, Big data, Image processing, computer.software_genre, 010603 evolutionary biology, 01 natural sciences, Digital image, Histogram, Ecology, Evolution, Behavior and Systematics, Ecology, business.industry, 010604 marine biology & hydrobiology, Applied Mathematics, Ecological Modeling, [INFO.INFO-MO]Computer Science [cs]/Modeling and Simulation, Computer Science Applications, Visualization, Workflow, Computational Theory and Mathematics, Modeling and Simulation, Noise (video), Data mining, [INFO.INFO-DC]Computer Science [cs]/Distributed, Parallel, and Cluster Computing [cs.DC], Scale (map), business, computer
Abstract: International audience; One standard method to capture data for phenological studies is with digital cameras, taking periodic pictures of vegetation. The large volume of digital images introduces the opportunity to enrich these studies by incorporating big data techniques. The new challenges, then, are to efficiently process large datasets and produce insightful information by controlling noise and variability. On these grounds, the contributions of this paper are the following. (a) A histogram-based visualization for large scale phenological data. (b) Phenological metrics based on the HSV color space, that enhance such histogram-based visualization. (c) A mathematical model to tackle the natural variability and uncertainty of phenological images. (d) The implementation of a parallel workflow to process a large amount of collected data efficiently. We validate these contributions with datasets taken from the Phenological Eyes Network (PEN), demonstrating the effectiveness of our approach. The experiments presented here are reproducible with the provided companion material
Published: 2020
Full Text: View/download PDF

7. Sample size and prediction of weight and yield of individual cuts from Braford steers pistol hindquarters

Author: Leandro Lunardini Cardoso, Jaime Urdapilleta Tarouco, Michael D. MacNeil, José Fernando Piva Lobato, Mara Célia Dambrós, Aline Kellermann de Freitas, Thais Devincenzi, Fernanda Dorneles Feijó, Fernando Flores Cardoso, Leandro Lunardini Cardoso, UFRGS, Jaime Urdapilleta Tarouco, UFRGS, Michael D. MacNeil, DELTA G, José Fernando Piva Lobato, UFRGS, Mara Célia Dambrós, USP, Aline Kellermann de Freitas, UFRGS, Thais Devincenzi, UFRGS, Fernanda Dorneles Feijó, UFRGS, and FERNANDO FLORES CARDOSO, CPPSUL.
Subjects: Bovino, Longissimus thoracis muscle, Coefficient of determination, ultrasound, business.industry, Agriculture (General), Ultrasound, technology, industry, and agriculture, food and beverages, Carcaça, Subcutaneous fat, S1-972, models, Ultrassom, Animal science, cattle, Sample size determination, business, carcass, Mathematics
Abstract: Two hundred seventeen grass-finished Braford steers were assessed by ultrasonic scanning and subsequently harvested with their pistol hindquarters fabricated into boneless wholesale cuts. The Longissimus thoracis muscle area and subcutaneous fat depths were measured. The objectives of this study were: 1) to develop prediction equations for weights of the pistol hindquarter and high-value commercial cuts, and 2) to estimate sample size needed for experiments comparing pistol hindquarter retail product weight using either physically or ultrasonically measured carcass traits. Carcass measurements explained 44 % to 94 % of the variation in weights of individual cuts, whereas, measurements that were made using ultrasound explained 42 % to 90 % of the variation in the weights. Models used to predict the weight of pistol hindquarter retail product with carcass measures and ultrasound measures showed high coefficient of determination (R2 = 0.92 and 0.97, respectively). Whether based on carcass or ultrasound measures, models used to estimate weight percentage of fat trimmed from the pistol hindquarter had lack of fit. In general, models for individual cuts weights that used traits measured with ultrasound as independent variables approached the accuracy of models using carcass traits. Thus, only slightly greater samples sizes were required to have equivalent power to detect differences in retail product weights using ultrasound measures. For experiments of equivalent power, differences in the number of animals required may be offset by avoiding costs for slaughter and fabrication. Keywords: cattle, carcass, models, ultrasound Made available in DSpace on 2020-12-08T09:04:59Z (GMT). No. of bitstreams: 1 Cardoso-et-al-2020.pdf: 200863 bytes, checksum: c53212e478f34b7b26120f57f62ac486 (MD5) Previous issue date: 2020
Published: 2020
Full Text: View/download PDF

8. Copaiba oil-resin (Copaifera reticulata Ducke) modulates the inflammation in a model of injury to rats’ tongues

Author: Roberta Souza D'Almeida Couto, Francisco Bruno Teixeira, Manoela Domingues Martins, Rafael Rodrigues Lima, Osmar Alves Lameira, Liana Preto Webber, Raíra de Brito Silva, Francisco Bruno Teixeira, UFPA, Raíra de Brito Silva, UFPA, OSMAR ALVES LAMEIRA, CPATU, Liana Preto Webber, UFRGS, Roberta Souza D'Almeida Couto, UFPA, Manoela Domingues Martins, UFRGS, and Rafael Rodrigues Lima, UFPA.
Subjects: Male, 0301 basic medicine, Model of injury, Pathology, Fitoterapia, Macrophage, Anti-Inflammatory Agents, Pharmacology, Copaiba Oil, Tongue Diseases, 0302 clinical medicine, Medicine, Tissue homeostasis, biology, Fabaceae, General Medicine, lcsh:Other systems of medicine, Copaíba, 030220 oncology & carcinogenesis, Inflamacoes, medicine.symptom, Research Article, medicine.medical_specialty, Copaifera Reticulata Ducke, Copaifera, Inflammation, Amazonian biodiversity, 03 medical and health sciences, Copaiba, Animals, Humans, Plant Oils, Rats, Wistar, Wound Healing, Plant Extracts, business.industry, Copaiba oil-resin, biology.organism_classification, lcsh:RZ201-999, Acute toxicity, Complementary therapies, Rats, Planta Medicinal, 030104 developmental biology, Complementary and alternative medicine, Patologia bucal, Chronic Inflammatory Infiltrate, business, Wound healing, Resins, Plant
Abstract: Background The regeneration of integrity and tissue homeostasis after injury is a fundamental property and involves complex biological processes fully dynamic and interconnected. Although there are medications prescribed to accelerate the process of wound healing by reducing the exaggerated inflammatory response, comes the need to search for different compounds of Amazonian biodiversity that can contribute to the acceleration of the healing process. Among these products, the copaiba oil-resin is one of the most prominent feature in this scenario, as they have been reported its medicinal properties. Methods Aiming to evaluate the anti-inflammatory and healing effect of copaiba oil-resin (Copaifera reticulata Ducke) in transfixing injury of rats’ tongues first proceeded up the copaiba oil-resin oral toxicity test in 5 male mice to stipulate the therapeutic dose which was established at 200 mg/kg/day. Then it was induced transfixing injury in a total of 15 Wistar rats. The animals were randomly divided into three groups based on the treatment: control group, dexamethasone group and copaiba oil-resin group. After 7 days of treatment, histological slides stained with hematoxylin and eosin was prepared. Immunohistochemistry for CD68 (macrophage marker) was performed and analyzed by the cell counter Image J. Results The acute toxicity test showed that the oil-resin copal has low toxicity. Furthermore, copaiba oil-resin therapy modulates the inflammatory response by decreasing the chronic inflammatory infiltrate, edema and specifically the number of macrophages. Conclusions The results indicate the potential of the Amazon region and showed up relevant because therapy with this extract modulates the inflammatory process.
Published: 2017
Full Text: View/download PDF

9. Insights Into Genetic and Molecular Elements for Transgenic Crop Development

Author: M. F. GROSSI-de-SÁ, Marcio Alves-Ferreira, Fabricio B. M. Arraes, Maria Fatima Grossi-de-Sa, Valdeir Junio Vaz Moreira, Marcos Fernando Basso, MARCOS FERNANDO BASSO, FABRÍCIO BARBOSA MONTEIRO ARRAES, UFRGS, MAÍRA GROSSI-DE-SA, VALDEIR JUNIO VAZ MOREIRA, UFRGS, MARCIO ALVES-FERREIRA, UFRJ, and MARIA FATIMA GROSSI DE SA, Cenargen.
Subjects: 0106 biological sciences, 0301 basic medicine, Plant Science, lcsh:Plant culture, Biology, Plant genetic engineering, 01 natural sciences, Plant genetic transformation, plant genetic transformation, Crop, 03 medical and health sciences, T-DNA delivery, lcsh:SB1-1110, Plant breeding, tissue culture, Original Research, minimal expression cassette, new biotechnological tools, Minimal expression cassette, business.industry, Techniques of genetic engineering, New biotechnological tools, Biotechnology, Tissue culture, 030104 developmental biology, Agriculture, Trait, business, 010606 plant biology & botany
Abstract: Climate change and the exploration of new areas of cultivation have impacted the yields of several economically important crops worldwide. Both conventional plant breeding based on planned crosses between parents with specific traits and genetic engineering to develop new biotechnological tools (NBTs) have allowed the development of elite cultivars with new features of agronomic interest. The use of these NBTs in the search for agricultural solutions has gained prominence in recent years due to their rapid generation of elite cultivars that meet the needs of crop producers, and the efficiency of these NBTs is closely related to the optimization or best use of their elements. Currently, several genetic engineering techniques are used in synthetic biotechnology to successfully improve desirable traits or remove undesirable traits in crops. However, the features, drawbacks, and advantages of each technique are still not well understood, and thus, these methods have not been fully exploited. Here, we provide a brief overview of the plant genetic engineering platforms that have been used for proof of concept and agronomic trait improvement, review the major elements and processes of synthetic biotechnology, and, finally, present the major NBTs used to improve agronomic traits in socioeconomically important crops.
Published: 2019

10. Multi-Objective Reinforcement Learning for Reconfiguring Data Stream Analytics on Edge Computing

Author: Marcos Dias de Assuncao, Felipe Rodrigo de Souza, Laurent Lefèvre, Julio C. S. dos Anjos, Alexandre da Silva Veith, Algorithms and Software Architectures for Distributed and HPC Platforms (AVALON), Inria Grenoble - Rhône-Alpes, Institut National de Recherche en Informatique et en Automatique (Inria)-Institut National de Recherche en Informatique et en Automatique (Inria)-Laboratoire de l'Informatique du Parallélisme (LIP), École normale supérieure - Lyon (ENS Lyon)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Recherche en Informatique et en Automatique (Inria)-Centre National de la Recherche Scientifique (CNRS)-École normale supérieure - Lyon (ENS Lyon)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS), Laboratoire de l'Informatique du Parallélisme (LIP), Université de Lyon-Université de Lyon-Institut National de Recherche en Informatique et en Automatique (Inria)-Centre National de la Recherche Scientifique (CNRS), École normale supérieure - Lyon (ENS Lyon), Instituto de Informática da UFRGS (UFRGS), Universidade Federal do Rio Grande do Sul [Porto Alegre] (UFRGS), ANR-10-LABX-0070,MILYON,Community of mathematics and fundamental computer science in Lyon(2010), Centre National de la Recherche Scientifique (CNRS)-Université de Lyon-Institut National de Recherche en Informatique et en Automatique (Inria)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-École normale supérieure - Lyon (ENS Lyon)-Centre National de la Recherche Scientifique (CNRS)-Université de Lyon-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-École normale supérieure - Lyon (ENS Lyon), École normale supérieure de Lyon (ENS de Lyon)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Recherche en Informatique et en Automatique (Inria)-Centre National de la Recherche Scientifique (CNRS)-École normale supérieure de Lyon (ENS de Lyon)-Université Claude Bernard Lyon 1 (UCBL), and École normale supérieure de Lyon (ENS de Lyon)
Subjects: Data stream, Multi-objective, business.industry, Data stream mining, Computer science, Distributed computing, Control reconfiguration, 020206 networking & telecommunications, Cloud computing, 02 engineering and technology, Edge computing, Stream processing, [INFO.INFO-PF]Computer Science [cs]/Performance [cs.PF], Reinforce- ment learning, Analytics, Data analytics, 0202 electrical engineering, electronic engineering, information engineering, Reinforcement learning, 020201 artificial intelligence & image processing, Monte carlo tree searc, [INFO.INFO-DC]Computer Science [cs]/Distributed, Parallel, and Cluster Computing [cs.DC], business, Markov decision process
Abstract: International audience; There is increasing demand for handling massive amounts of data in a timely manner via Distributed Stream Processing (DSP). A DSP application is often structured as a directed graph whose vertices are operators that perform transformations over the incoming data and edges representing the data streams between operators. DSP applications are traditionally deployed on the Cloud in order to explore the virtually unlimited number of resources. Edge computing has emerged as a suitable paradigm for executing parts of DSP applications by offloading certain operators from the Cloud and placing them close to where the data is generated, hence minimising the overall time required to process data events (i.e., the end-to-end latency). The operator reconfiguration consists of changing the initial placement by reassigning operators to different devices given target performance metrics. In this work, we model the operator reconfiguration as a Reinforcement Learning (RL) problem and define a multi-objective reward considering metrics regarding operator reconfiguration, and infrastructure and application improvement. Experimental results show that reconfiguration algorithms that minimise only end-to-end processing latency can have a substantial impact on WAN traffic and communication cost. The results also demonstrate that when reconfiguring operators, RL algorithms improve by over 50% the performance of the initial placement provided by state-of-the-art approaches.
Published: 2019
Full Text: View/download PDF

11. UserDEV

Author: Sihem Amer-Yahia, João Luiz Dihl Comba, Behrooz Omidvar-Tehrani, Viviane Pereira Moreira, Fabian Colque Zegarra, Eric J. Simon, Laboratoire d'Informatique de Grenoble (LIG ), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes [2016-2019] (UGA [2016-2019]), Centre National de la Recherche Scientifique (CNRS), Instituto de Informática da UFRGS (UFRGS), Universidade Federal do Rio Grande do Sul [Porto Alegre] (UFRGS), and Instituto de Informática [Porto Alegre]
Subjects: Group (mathematics), Computer science, Process (engineering), business.industry, 020207 software engineering, 02 engineering and technology, Data science, Pipeline (software), Visualization, Data exchange, Analytics, 020204 information systems, 0202 electrical engineering, electronic engineering, information engineering, [INFO]Computer Science [cs], Behavioral analytics, business
Abstract: International audience; The increasing availability of user data constitutes new opportunities in various applications ranging from behavioral analytics to recommendations. A common way of analyzing user data is through "user group analytics" whose purpose is to breakdown users into groups to gain a more focused understanding of their collective behavior. The process consists of group discovery, group exploration, and group visualization. To date, user group analyt-ics is done using separate tools which makes it fragmented and burdensome for analysts. In this paper, we describe UserDEV, a full-fledged user group analytics pipeline which combines discovery, exploration, and visualization of user groups, in a fully-connected fashion. UserDEV contributes a star-like architecture as well as a common data exchange model to tighten connections between the analytics components. We provide a realistic use case to show how UserDEV helps analysts perform analytical tasks on user groups. While we report a preliminary user study, we also discuss opportunities for an end-to-end evaluation of a group analytics framework.
Published: 2019
Full Text: View/download PDF

12. Load Aware Provisioning of IoT Services on Fog Computing Platform

Author: Ilhem Fajjari, Bruno Donassolo, Panayotis Mertikopoulos, Arnaud Legrand, Instituto de Informática da UFRGS (UFRGS), Universidade Federal do Rio Grande do Sul [Porto Alegre] (UFRGS), Orange Labs [Issy les Moulineaux], France Télécom, Performance analysis and optimization of LARge Infrastructures and Systems (POLARIS ), Inria Grenoble - Rhône-Alpes, Institut National de Recherche en Informatique et en Automatique (Inria)-Institut National de Recherche en Informatique et en Automatique (Inria)-Laboratoire d'Informatique de Grenoble (LIG ), and Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes [2016-2019] (UGA [2016-2019])-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes [2016-2019] (UGA [2016-2019])
Subjects: IoT, Edge device, business.industry, Computer science, Distributed computing, 05 social sciences, application placement, 050801 communication & media studies, Provisioning, Cloud computing, Fog Computing, Load balancing (computing), [INFO.INFO-NI]Computer Science [cs]/Networking and Internet Architecture [cs.NI], 0508 media and communications, service provisioning, Analytics, Software deployment, 0502 economics and business, [INFO]Computer Science [cs], 050211 marketing, Orchestration (computing), business
Abstract: International audience; To support the drastically increasing traffic generated by devices at the edge of the network, 5G players are urged to rethink their infrastructure design. Unfortunately, conventional Cloud infrastructures struggle to adapt to the huge volume of traffic. In this context, Fog computing has been developed to bridge Cloud data centers and edge devices servicing a multitude of heterogeneous devices. These nearby nodes offer analytics and data storage capabilities increasing considerably the capacity of the infrastructure. However, provisioning IoT applications on such a heterogeneous infrastructure, while meeting their stringent requirements is extremely challenging. In this paper, we study the Fog service provisioning issue in a practical manner. In this regard , we propose a novel strategy, which we call GO-FSP. GO-FSP optimizes the placement of IoT application components while coping with their strict performance requirements. To do so, we first propose an Integer Linear Programming (ILP) formulation for the IoT application provisioning problem. The latter targets to minimize the deployment cost while ensuring a load balancing between heterogeneous devices. Then, a GRASP-based approach is proposed to achieve the aforementioned objectives. Finally, we make use of the FITOR orchestration system to evaluate the performance of our solution under real conditions. Obtained results show that our scheme outperforms the related strategies.
Published: 2019
Full Text: View/download PDF

13. ASSESSMENT OF ENGINEERING GAS RADIATIVE PROPERTY MODELS IN HIGH PRESSURE TURBULENT JET DIFFUSION FLAMES

Author: Brent W. Webb, Frédéric André, Mathieu Galtier, Jean-Louis Consalvi, Felipe R. Coelho, Vladimir P. Solovjov, Fatiha Nmira, Francis Henrique Ramos França, Institut universitaire des systèmes thermiques industriels (IUSTI), Aix Marseille Université (AMU)-Centre National de la Recherche Scientifique (CNRS), Centre d'Energétique et de Thermique de Lyon (CETHIL), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National des Sciences Appliquées de Lyon (INSA Lyon), Université de Lyon-Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS), EDF (EDF), Department of Mechanical Engineering [Brigham], Brigham Young University (BYU), Centre National de la Recherche Scientifique (CNRS)-Aix Marseille Université (AMU), Centre National de la Recherche Scientifique (CNRS)-Institut National des Sciences Appliquées de Lyon (INSA Lyon), Institut National des Sciences Appliquées (INSA)-Université de Lyon-Institut National des Sciences Appliquées (INSA)-Université de Lyon-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon, Universidade Federal do Rio Grande do Sul [Porto Alegre] (UFRGS), Instituto de Informática da UFRGS (UFRGS), Mécanique des Fluides, Energies et Environnement (EDF R&D MFEE), EDF R&D (EDF R&D), EDF (EDF)-EDF (EDF), Institut National des Sciences Appliquées (INSA)-Université de Lyon-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS), and Universidade Federal do Rio Grande do Sul (UFRGS)
Subjects: 010504 meteorology & atmospheric sciences, 020209 energy, 02 engineering and technology, Computational fluid dynamics, Combustion, 01 natural sciences, 7. Clean energy, Methane, [SPI]Engineering Sciences [physics], chemistry.chemical_compound, 0202 electrical engineering, electronic engineering, information engineering, Radiative transfer, Diffusion (business), Spectroscopy, ComputingMilieux_MISCELLANEOUS, 0105 earth and related environmental sciences, Physics, Jet (fluid), Radiation, business.industry, Turbulence, [SPI.FLUID]Engineering Sciences [physics]/Reactive fluid environment, Mechanics, Atomic and Molecular Physics, and Optics, chemistry, 13. Climate action, Thermal radiation, business
Abstract: This article aims to determine the most relevant engineering global method for gas radiative property modeling to be applied in the simulations of combustion problems. Two versions of the full-spectrum correlated k (FSCK) model, the Rank-Correlated full-spectrum k-distribution/ Spectral-Line-Weighted-sum-of-gray-gases (RC-FSK/RC-SLW) and a new version of the Weighted-Sum-of-Grey-Gases (WSGG) model are compared with the Narrow-Band CK (NBCK) model in four turbulent axisymmetric jet diffusion flames fueled either by hydrogen or methane at atmospheric and higher pressures. These comparisons are performed in decoupled radiative heat transfer calculations with the thermal fields being prescribed. The databases and coefficients associated to these different models are determined from a unique Line-By-Line database in order to allow a relevant comparison. Model results suggest that the SLW/FSCK methods coupled to the so-called improved scheme proposed by Cai and Modest or the Rank-Correlated SLW/FSK model, along with k-g distributions generated from accurate high-resolution high-temperature databases are the most mature gas radiative property models to be implemented in CFD codes dealing with combustion problems involving gas-soot mixtures.
Published: 2019
Full Text: View/download PDF

14. Evolutionary and social consequences of introgression of nontransgenic herbicide resistance from rice to weedy rice in Brazil

Author: Alcido Elenor Wander, Aldo Merotto, Valmir Gaedke Menezes, Augusto Kalsing, Anderson Luis Nunes, Catarine Markus, Ives Clayton Gomes dos Reis Goulart, Aldo Merotto Junior, UFRGS, IVES CLAYTON GOMES DOS REIS GOULART, CNPF, Anderson L. Nunes, IFRS, Augusto Kalsing, Dow AgroSciences, Catarine Markus, UFRGS, Valmir G. Menezes, IRGA, and ALCIDO ELENOR WANDER, CNPAF.
Subjects: 0106 biological sciences, Clearfield TM, Imazethapyr, outcrossing, Population, Biodiversity, Introgression, Fluxo de genes, ClearfieldTM, Biology, Outcrossing, 01 natural sciences, imazethapyr, Gene flow, Fitness, herbicide resistance, Genetics, Cultivar, education, Ecology, Evolution, Behavior and Systematics, education.field_of_study, business.industry, Red rice, food and beverages, 04 agricultural and veterinary sciences, fitness, Biotechnology, Herbicide resistance, Agronomy, Arroz, Agriculture, acetolactate synthase, Herbicida, Acetolactate synthase, 040103 agronomy & agriculture, red rice, 0401 agriculture, forestry, and fisheries, gene flow, General Agricultural and Biological Sciences, business, Reviews and Syntheses, 010606 plant biology & botany, Weedy rice
Abstract: Several studies have expressed concerns about the effects of gene flow from transgenic herbicide‐resistant crops to their wild relatives, but no major problems have been observed. This review describes a case study in which what has been feared in transgenics regarding gene flow has actually changed biodiversity and people's lives. Nontransgenic imidazolinone‐resistant rice (IMI‐rice) cultivars increased the rice grain yield by 50% in southern Brazil. This increase was beneficial for life quality of the farmers and also improved the regional economy. However, weedy rice resistant to imidazolinone herbicides started to evolve three years after the first use of IMI‐rice cultivars. Population genetic studies indicate that the herbicide‐resistant weedy rice was mainly originated from gene flow from resistant cultivars and distributed by seed migration. The problems related with herbicide‐resistant weedy rice increased the production costs of rice that forced farmers to sell or rent their land. Gene flow from cultivated rice to weedy rice has proven to be a large agricultural, economic, and social constraint in the use of herbicide‐resistant technologies in rice. This problem must be taken into account for the development of new transgenic or nontransgenic rice technologies.
Published: 2016
Full Text: View/download PDF

15. Comparative Analysis of Inference Errors in a Neural Network Implemented in SRAM-Based FPGA Induced by Neutron Irradiation and Fault Injection Methods

Author: Paolo Rech, F. Libano, Fernanda Lima Kastensmidt, Vincent Pouget, Fabio Benevenuti, Universidade Federal do Rio Grande do Sul [Porto Alegre] (UFRGS), Institut d’Electronique et des Systèmes (IES), Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS), Radiations et composants (RADIAC), Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS), and PgMicro - Instituto de Informática [UFRGS] (PGMICRO)
Subjects: Artificial neural network, 010308 nuclear & particles physics, Computer science, business.industry, Inference, 02 engineering and technology, Fault injection, 01 natural sciences, Semiconductor laser theory, [SPI.TRON]Engineering Sciences [physics]/Electronics, Reliability (semiconductor), Single event upset, 0103 physical sciences, 0202 electrical engineering, electronic engineering, information engineering, 020201 artificial intelligence & image processing, Static random-access memory, [SPI.NANO]Engineering Sciences [physics]/Micro and nanotechnologies/Microelectronics, Field-programmable gate array, business, Computer hardware, ComputingMilieux_MISCELLANEOUS
Abstract: In this paper we explore multiple and complementary approaches to analyze the single event upset susceptibility of a design implemented in Xilinx 28 nm SRAM-based FPGA. We choose as case study a neural network trained for a classification task. The techniques adopted are neutron irradiation, laser and emulated fault injection. These different techniques are complementary in the sense that they can be applied in different levels of the design integration, from the comprehensive but coarse reliability evaluation of the whole design, provided by the irradiation, to the fine grained and focused reliability investigation of individual modules or devices, provided by laser fault injection. Also, results from these different techniques can be compared allowing their use as crosschecking mechanisms.
Published: 2018

16. The retrospective analysis of Antarctic tracking data project

Author: Luciano Dalla Rosa, Henri Weimerskirch, Kerstin Jerosch, Sébastien Descamps, Marthán N Bester, Klemens Pütz, Charles-André Bost, Phil O'b. Lyver, Christophe Guinet, Akiko Kato, Horst Bornemann, John L. Bengtson, Jaimie Cleeland, Mary-Anne Lea, Silvia Olmastroni, Rochelle Constantine, Richard A. Phillips, Jean-Benoît Charrassin, Peter G. Ryan, Simon D. Goldsworthy, Roger Kirkwood, Louise Emmerson, Wayne Z. Trivelpiece, Christian Lydersen, Ben Raymond, Mark A. Hindell, Dominik A Nachtsheim, Jefferson T. Hinke, Nick Gales, Arnaud Tarroux, Simon Wotherspoon, Robert J. M. Crawford, Mônica M. C. Muelbert, Pierre A. Pistorius, Kimberly T. Goetz, Andrew D. Lowther, David R. Thompson, Virginia Andrews-Goff, Ian D. Jonsen, M. E. I. Marquez, Clive R. McMahon, Karine Delord, Mike Double, Gerald L. Kooyman, Kit M. Kovacs, José C. Xavier, Anton Van de Putte, Colin Southwell, Ewan D. Wakefield, Erling S. Nordøy, Barbara Wienecke, Mercedes Santos, Birgitte I. McDonald, Daniel P. Costa, Lars Boehme, Norman Ratcliffe, Ryan R. Reisinger, Arnoldus Schytte Blix, Michael A. Fedak, Peter L. Boveng, Rachael Alderman, Robert Harcourt, Iain J. Staniland, Leigh G. Torres, Ari S. Friedlaender, Yan Ropert-Coudert, Azwianewi B. Makhado, M. Goebel, Kieran Lawton, Philip N. Trathan, P J Nico de Bruyn, Luis A. Hückstädt, Keith W. Nicholls, Grant Ballard, Bruno Danis, Joachim Plötz, Knowles Kerry, David G. Ainley, Ben Arthur, Akinori Takahashi, Centre d'Études Biologiques de Chizé - UMR 7372 (CEBC), Université de La Rochelle (ULR)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), BEDIC, OD Nature [Brussels, Belgium], Royal Belgian Institute for Natural Sciences [Belgium], Laboratory of Biodiversity and Evolutionary Genomics, University of Leuven, Alfred-Wegener-Institut, Helmholtz-Zentrum für Polar- und Meeresforschung (AWI), Processus et interactions de fine échelle océanique (PROTEO), Laboratoire d'Océanographie et du Climat : Expérimentations et Approches Numériques (LOCEAN), Institut Pierre-Simon-Laplace (IPSL (FR_636)), École normale supérieure - Paris (ENS Paris), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-École polytechnique (X)-Centre National d'Études Spatiales [Toulouse] (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université de Paris (UP)-École normale supérieure - Paris (ENS Paris), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-École polytechnique (X)-Centre National d'Études Spatiales [Toulouse] (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université de Paris (UP)-Institut de Recherche pour le Développement (IRD)-Muséum national d'Histoire naturelle (MNHN)-Centre National de la Recherche Scientifique (CNRS)-Sorbonne Université (SU)-Institut Pierre-Simon-Laplace (IPSL (FR_636)), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-École polytechnique (X)-Centre National d'Études Spatiales [Toulouse] (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université de Paris (UP)-Institut de Recherche pour le Développement (IRD)-Muséum national d'Histoire naturelle (MNHN)-Centre National de la Recherche Scientifique (CNRS)-Sorbonne Université (SU), Department of Ecology and Evolutionary Biology [Santa Cruz], University of California [Santa Cruz] (UCSC), University of California-University of California, Laboratoire de Biologie Marine, Université libre de Bruxelles (ULB), Department of Biological Sciences [Sydney, Australia] (Macquarie University), Macquarie University, Institute for Marine and Antarctic Studies [Horbat] (IMAS), University of Tasmania [Hobart, Australia] (UTAS), National Institute of Water and Atmospheric Research [Wellington] (NIWA), Hatfield Marine Science Center [Newport, USA], British Antarctic Survey (BAS), Natural Environment Research Council (NERC), H.T. Harvey & Associates [CA, USA), Department of Primary Industries [Australia], Department of Primary Industries, Parks, Water and Environment, PRBO Conservation Science, Department of Zoology and Entomology [Pretoria], University of Pretoria [South Africa], Mammal Research Institute - Department Zoology and Entomology, University of Pretoria (UPSpace), University of Tromsø (UiT), Scottish Oceans Institute, University of St Andrews [Scotland], School of Biological Sciences [Auckland, New Zealand], University of Auckland [Auckland], Department of Environmental Affairs [South Africa] (Oceans and Coasts), Laboratório de Ecologia e Conservação da Megafauna Marinha [Rio Grande, Brazil], Universidade Federal do Rio Grande do Sul (UFRGS), Norwegian Polar Institute, Fram Centre, Australian Antarctic Division (AAD), Australian Government, Department of the Environment and Energy, Antarctic Ecosystem Research Division, Southwest Fisheries Science Center (SWFSC), NOAA National Marine Fisheries Service (NMFS), National Oceanic and Atmospheric Administration (NOAA)-National Oceanic and Atmospheric Administration (NOAA)-NOAA National Marine Fisheries Service (NMFS), National Oceanic and Atmospheric Administration (NOAA)-National Oceanic and Atmospheric Administration (NOAA), South Australian Research and Development Institute (SARDI), South Australian Research and Development Institute, Department of Biological Sciences [North Ryde], Center for Marine Biology and Biomedicine [La Jolla], Scripps Institution of Oceanography (SIO), University of California [San Diego] (UC San Diego), University of California-University of California-University of California [San Diego] (UC San Diego), FRAM Centre, Norwegian Polar Institute, Biodiversity Section [Norway], Manaaki Whenua – Landcare Research [Lincoln], Oceans & Coasts Branch, Instituto Antártico Argentino, Moss Landing Marine Laboratories [CA, USA] (San José State University), San Jose State University [San José] (SJSU), University of Sydney Institute of Marine Science (USIMS), The University of Sydney, Instituto de Oceanografia, Universidade Federal do Rio Grande, Dipartimento di Scienze Fisiche [Siena, Italy] (Università di Siena), Università di Siena, National Research Foundation Centre of Excellence at the Percy FitzPatrick Institute, Antarctic Research Trust, British Antarctic Survey NERC [UK], Percy FitzPatrick Institute of African Ornithology, University of Cape Town, National Institute of Polar Research [Tokyo] (NiPR), Institute of Biodiversity, Animal Health and Comparative Medicine, School of Veterinary Medicine, College of Medical, Veterinary and Life Sciences, University of Glasgow, Marine and Environmental Sciences Centre (MARE UC), Universidade de Coimbra [Coimbra], La Rochelle Université (ULR)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), Muséum national d'Histoire naturelle (MNHN)-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Institut Pierre-Simon-Laplace (IPSL (FR_636)), École normale supérieure - Paris (ENS-PSL), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-École polytechnique (X)-Centre National d'Études Spatiales [Toulouse] (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité)-École normale supérieure - Paris (ENS-PSL), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-École polytechnique (X)-Centre National d'Études Spatiales [Toulouse] (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité)-Muséum national d'Histoire naturelle (MNHN)-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Institut Pierre-Simon-Laplace (IPSL (FR_636)), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-École polytechnique (X)-Centre National d'Études Spatiales [Toulouse] (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité), University of California [Santa Cruz] (UC Santa Cruz), University of California (UC)-University of California (UC), Department of Biological Sciences [Sydney], Institute for Marine and Antarctic Studies [Hobart] (IMAS), Universidade Federal do Rio Grande do Sul [Porto Alegre] (UFRGS), Scripps Institution of Oceanography (SIO - UC San Diego), University of California (UC)-University of California (UC)-University of California [San Diego] (UC San Diego), San Jose State University [San Jose] (SJSU), and Università degli Studi di Siena = University of Siena (UNISI)
Subjects: 0106 biological sciences, Statistics and Probability, Data Descriptor, bird, Ecosystem ecology, animal experiment, Library and Information Sciences, Biodiversity informatics, animal experiment, Antarctica, biodiversity, bird, climate data,ecosystem, Southern Ocean, 010603 evolutionary biology, 01 natural sciences, Education, Information system, VDP::Mathematics and natural science: 400::Zoology and botany: 480, Tracking data, Ecosystem, 14. Life underwater, Southern Ocean, lcsh:Science, Life Below Water, biodiversity, Apex predator, ecosystem, Science & Technology, CLIMATE-CHANGE, business.industry, Conservation biology, 010604 marine biology & hydrobiology, Environmental resource management, 15. Life on land, Computer Science Applications, Multidisciplinary Sciences, MODEL, Ocean Biogeographic Information System, Geography, 13. Climate action, [SDE]Environmental Sciences, Antarctica, Science & Technology - Other Topics, ECOSYSTEM, lcsh:Q, Statistics, Probability and Uncertainty, business, climate data, Information Systems, Sciences exactes et naturelles, VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480
Abstract: The Retrospective Analysis of Antarctic Tracking Data (RAATD) is a Scientific Committee for Antarctic Research project led jointly by the Expert Groups on Birds and Marine Mammals and Antarctic Biodiversity Informatics, and endorsed by the Commission for the Conservation of Antarctic Marine Living Resources. RAATD consolidated tracking data for multiple species of Antarctic meso- and top-predators to identify Areas of Ecological Significance. These datasets and accompanying syntheses provide a greater understanding of fundamental ecosystem processes in the Southern Ocean, support modelling of predator distributions under future climate scenarios and create inputs that can be incorporated into decision making processes by management authorities. In this data paper, we present the compiled tracking data from research groups that have worked in the Antarctic since the 1990s. The data are publicly available through biodiversity.aq and the Ocean Biogeographic Information System. The archive includes tracking data from over 70 contributors across 12 national Antarctic programs, and includes data from 17 predator species, 4060 individual animals, and over 2.9 million observed locations., Measurement(s)geographic locationTechnology Type(s)digital curationFactor Type(s)temporal interval • geographic locationSample Characteristic – OrganismAptenodytes forsteri • Lobodon carcinophaga • Eudyptes chrysolophus • Thalassarche melanophrys • Phoebetria palpebrata • Aptenodytes patagonicus • Pygoscelis adeliae • Leptonychotes weddellii • Megaptera novaeangliae • Mirounga leonina • Arctocephalus gazella • Thalassoica antarctica • Eudyptes schlegeli • Diomedea exulans • Phoebetria fusca • Diomedea chrysostoma • Procellaria aequinoctialisSample Characteristic – Environmentpolar biomeSample Characteristic – LocationAntarctica Machine-accessible metadata file describing the reported data: 10.6084/m9.figshare.11688876
Published: 2018
Full Text: View/download PDF

17. Autonomic caching management in industrial smart gateways

Author: Philippe Lalanda, Ingrid Nunes, Jhonny Mertz, Environnements et outils pour le Génie Logiciel Industriel (ADELE), Laboratoire d'Informatique de Grenoble (LIG ), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes [2016-2019] (UGA [2016-2019])-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes [2016-2019] (UGA [2016-2019]), Instituto de Informática da UFRGS (UFRGS), and Universidade Federal do Rio Grande do Sul [Porto Alegre] (UFRGS)
Subjects: Context model, Service (systems architecture), Java, Computer science, business.industry, 05 social sciences, Context management, 050801 communication & media studies, Context (language use), 02 engineering and technology, [INFO.INFO-SE]Computer Science [cs]/Software Engineering [cs.SE], [INFO.INFO-IU]Computer Science [cs]/Ubiquitous Computing, 0508 media and communications, Contextual design, Power consumption, 020204 information systems, 0202 electrical engineering, electronic engineering, information engineering, Set (psychology), business, computer, ComputingMilieux_MISCELLANEOUS, computer.programming_language, Computer network
Abstract: Pervasive platforms are used to run applications near devices. They provide a development model and a set of technical services, also called non-functional services, being context management one of them. This service provides applications with information collected from the environment. It has to anticipate the applications needs, making contextual data available at any time. This can be complex because devices placed in the environment cannot be constantly accessed due to energy saving needs, a major issue in most pervasive settings. In this paper, we provide a caching-based solution, focusing on a pervasive platform specialized for smart homes, called iCasa. This platform includes a service-oriented context module, which monitors the running applications needs, both current and future. Our solution consists of tracking application needs and context information to achieve an optimal caching configuration, regarding a multi-application pervasive environment. This caching configuration can decrease device power consumption due to the reduction of unnecessary network communications between platform and devices.
Published: 2018

18. A small Griko-Italian speech translation corpus

Author: Antonios Anastasopoulos, Marika Lekakou, Aline Villavicencio, Laurent Besacier, Marcely Zanon Boito, Laboratoire d'Informatique de Grenoble (LIG ), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes [2016-2019] (UGA [2016-2019]), University of Notre Dame [Indiana] (UND), Instituto de Informática da UFRGS (UFRGS), Universidade Federal do Rio Grande do Sul [Porto Alegre] (UFRGS), School of Computer Science and Electronic Engineering [Essex] (CSEE), University of Essex, Groupe d’Étude en Traduction Automatique/Traitement Automatisé des Langues et de la Parole (GETALP ), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes [2016-2019] (UGA [2016-2019])-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes [2016-2019] (UGA [2016-2019]), Institut Universitaire de France (IUF), and Ministère de l'Education nationale, de l’Enseignement supérieur et de la Recherche (M.E.N.E.S.R.)
Subjects: FOS: Computer and information sciences, Computer Science - Computation and Language, Computer science, business.industry, 020206 networking & telecommunications, 02 engineering and technology, Language documentation, computer.software_genre, 01 natural sciences, [INFO.INFO-CL]Computer Science [cs]/Computation and Language [cs.CL], Task (project management), Endangered language, Speech translation, 0103 physical sciences, 0202 electrical engineering, electronic engineering, information engineering, Artificial intelligence, business, 010301 acoustics, computer, Computation and Language (cs.CL), Natural language processing, Word (computer architecture)
Abstract: International audience; This paper presents an extension to a very low-resource parallel corpus collected in an endangered language, Griko, making it useful for computational research. The corpus consists of 330 utterances (about 20 minutes of speech) which have been transcribed and translated in Italian, with annotations for word-level speech-to-transcription and speech-to-translation alignments. The corpus also includes morphosyntactic tags and word-level glosses. Applying an automatic unit discovery method, pseudo-phones were also generated. We detail how the corpus was collected, cleaned and processed, and we illustrate its use on zero-resource tasks by presenting some baseline results for the task of speech-to-translation alignment and unsu-pervised word discovery. The dataset is available online, aiming to encourage replicability and diversity in computational language documentation experiments.
Published: 2018
Full Text: View/download PDF

19. Packed-Memory Quadtree: a cache-oblivious data structure for visual exploration of streaming spatiotemporal big data

Author: Bruno Raffin, Julio Toss, Cicero A. L. Pahins, João Luiz Dihl Comba, Data Aware Large Scale Computing (DATAMOVE ), Inria Grenoble - Rhône-Alpes, Institut National de Recherche en Informatique et en Automatique (Inria)-Institut National de Recherche en Informatique et en Automatique (Inria)-Laboratoire d'Informatique de Grenoble (LIG ), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes [2016-2019] (UGA [2016-2019])-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes [2016-2019] (UGA [2016-2019]), Instituto de Informática da UFRGS (UFRGS), and Universidade Federal do Rio Grande do Sul [Porto Alegre] (UFRGS)
Subjects: Computer science, Big data, [INFO.INFO-DS]Computer Science [cs]/Data Structures and Algorithms [cs.DS], 02 engineering and technology, Spatiotemporal datasets, Cache-oblivious algorithm, computer.software_genre, Streaming, 020204 information systems, 0202 electrical engineering, electronic engineering, information engineering, Quadtree, Representation (mathematics), business.industry, General Engineering, 020207 software engineering, Data structure, Computer Graphics and Computer-Aided Design, Continuous data, Human-Computer Interaction, Range queries, Streaming data, Real-time exploration, Data mining, Cache, business, computer
Abstract: International audience; The visual analysis of large multidimensional spatiotem-poral datasets poses challenging questions regarding storage requirements and query performance. Several data structures have recently been proposed to address these problems that rely on indexes that pre-compute different aggregations from a known-a-priori dataset. Consider now the problem of handling streaming datasets, in which data arrive as one or more continuous data streams. Such datasets introduce challenges to the data structure, which now has to support dynamic updates (insertion-s/deletions) and rebalancing operations to perform self-reorganizations. In this work, we present the Packed-Memory Quadtree (PMQ), a novel data structure designed to support visual exploration of streaming spatiotemporal datasets. PMQ is cache-oblivious to perform well under different cache configurations. We store streaming data in an internal index that keeps a spatiotemporal ordering over the data following a quadtree representation, with support for real-time insertions and deletions. We validate our data structure under different dynamic scenarios and compare to competing strategies. We demonstrate how PMQ could be used to answer different types of visual spatiotemporal range queries of streaming datasets.
Published: 2018
Full Text: View/download PDF

20. Autonomic management of context data based on application requirements

Author: Jhonny Mertz, Philippe Lalanda, Ingrid Nunes, Vanius Zapalowski, Instituto de Informática da UFRGS (UFRGS), Universidade Federal do Rio Grande do Sul [Porto Alegre] (UFRGS), Environnements et outils pour le Génie Logiciel Industriel (ADELE), Laboratoire d'Informatique de Grenoble (LIG ), and Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes [2016-2019] (UGA [2016-2019])-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes [2016-2019] (UGA [2016-2019])
Subjects: Ubiquitous computing, business.industry, Computer science, Distributed computing, 05 social sciences, 050801 communication & media studies, 020206 networking & telecommunications, Context (language use), 02 engineering and technology, [INFO.INFO-SE]Computer Science [cs]/Software Engineering [cs.SE], Context data, Metadata, [INFO.INFO-IU]Computer Science [cs]/Ubiquitous Computing, 0508 media and communications, Software, Feature (computer vision), 0202 electrical engineering, electronic engineering, information engineering, business, ComputingMilieux_MISCELLANEOUS
Abstract: Pervasive computing allows users to benefit from information and services provided by advanced applications using smart and interconnected devices. Given the inherent complexity of this software environment, platforms become a typical means of easing the development and execution of pervasive applications. These platforms are usually in charge of managing the application context, ensuring that data are reliable and available to applications. Most platforms provide this feature, making real-time information available, even when applications do not need such information in real-time. This occurs, for example, when sensors continuously provide measurements to in-house temperature controllers and these measurements have limited time variance. Therefore, controllers can be updated only occasionally, reducing application overload without compromising effectiveness. To address this issue, in this paper, we present a pervasive platform, iCasa, extended with an autonomic manager of service-oriented context module. Our solution consists of tracking application needs and context information to achieve the best caching configuration, regarding a multi-application pervasive environment. This caching configuration can decrease the power consumption of devices due to the reduced unnecessary network communications between platform and devices.
Published: 2017

21. Ontology for autonomous robotics

Author: Alaa Khamis, Marcos Barreto, S. Veera Ragavan, Ricardo Sanz, Alberto Olivares, Paulo J. S. Gonçalves, Julita Bermejo-Alonso, Joel Luis Carbonera, Sandro Rama Fiorini, Signe Redfield, Bruce Spencer, Howard Li, Edison Pignaton de Freitas, Joanna Isabelle Olszewska, Edson Prestes, Maki K. Habib, Abdelghani Chibani, SIRIUS, Laboratoire Images, Signaux et Systèmes Intelligents (LISSI), Université Paris-Est Créteil Val-de-Marne - Paris 12 (UPEC UP12)-Université Paris-Est Créteil Val-de-Marne - Paris 12 (UPEC UP12), Instituto de Informática da UFRGS (UFRGS), Universidade Federal do Rio Grande do Sul [Porto Alegre] (UFRGS), and Amirat, Yacine
Subjects: 0209 industrial biotechnology, Robot kinematics, Knowledge representation and reasoning, business.industry, Computer science, Robotics, 02 engineering and technology, [INFO] Computer Science [cs], Semantic interoperability, Ontology (information science), Human–robot interaction, Knowledge sharing, 020901 industrial engineering & automation, Human–computer interaction, 0202 electrical engineering, electronic engineering, information engineering, Robot, [INFO]Computer Science [cs], 020201 artificial intelligence & image processing, Artificial intelligence, business
Abstract: International audience; Creating a standard for knowledge representation and reasoning in autonomous robotics is an urgent task if we consider recent advances in robotics as well as predictions about the insertion of robots in human daily life. Indeed, this will impact the way information is exchanged between multiple robots or between robots and humans and how they can all understand it without ambiguity. Indeed, Human Robot Interaction (HRI) represents the interaction of at least two cognition models (Human and Robot). Such interaction informs task composition, task assignment, communication, cooperation and coordination in a dynamic environment, requiring a flexible representation. Hence, this paper presents the IEEE RAS Autonomous Robotics (AuR) Study Group, which is a spin-off of the IEEE Ontologies for Robotics and Automation (ORA) Working Group, and and its ongoing work to develop the first IEEE-RAS ontology standard for autonomous robotics. In particular, this paper reports on the current version of the ontology for autonomous robotics as well as on its first implementation successfully validated for a human-robot interaction scenario, demonstrating the developed ontology's strengths which include semantic interoperability and capability to relate ontologies from different fields for knowledge sharing and interactions.
Published: 2017
Full Text: View/download PDF

22. ClusterVis: Visualizing Nodes Attributes in Multivariate Graphs

Author: Carla M. D. S. Freitas, Ricardo Cava, Marco Winckler, Universidade Federal do Rio Grande do Sul [Porto Alegre] (UFRGS), Interactive Critical Systems (IRIT-ICS), Institut de recherche en informatique de Toulouse (IRIT), Université Toulouse 1 Capitole (UT1), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Université Toulouse - Jean Jaurès (UT2J)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Université Toulouse 1 Capitole (UT1), Université Fédérale Toulouse Midi-Pyrénées, Département Informatique [Université Nice Sophia Antipolis], Université Nice Sophia Antipolis (... - 2019) (UNS), COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Université Côte d'Azur (UCA), Scalable and Pervasive softwARe and Knowledge Systems (Laboratoire I3S - SPARKS), Laboratoire d'Informatique, Signaux, et Systèmes de Sophia Antipolis (I3S), COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Centre National de la Recherche Scientifique (CNRS)-Université Côte d'Azur (UCA)-Université Nice Sophia Antipolis (... - 2019) (UNS), COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Centre National de la Recherche Scientifique (CNRS)-Université Côte d'Azur (UCA), Brazilian funding agencies CNPq, and CAPES/COFECUB international for partnership between INF/UFRGS and IRIT INF/UFRGS and IRIT
Subjects: Theoretical computer science, Cluster visualization, Computer science, Multivariate graphs, media_common.quotation_subject, Topology (electrical circuits), 02 engineering and technology, Legibility, computer.software_genre, Information visualization, Information Visualization, 0202 electrical engineering, electronic engineering, information engineering, 0501 psychology and cognitive sciences, [INFO.INFO-HC]Computer Science [cs]/Human-Computer Interaction [cs.HC], Representation (mathematics), Cluster analysis, 050107 human factors, media_common, Creative visualization, business.industry, 05 social sciences, 020207 software engineering, Visualization, Face (geometry), Data mining, business, computer
Abstract: International audience; Many computing applications imply dealing with network data, for example, social networks, communications and computing networks, epidemiological networks, among others. These applications are usually based on multivariate graphs, i.e., graphs in which items and relationships have multiple attributes. Most of the visualization techniques described in the literature for dealing with multivariate graphs focus either on problems associated with the visualization of topology or on problems associated with the visualization of the items' attributes. The integration of these two components (topology and multiple attributes) in a single visualization turns into a challenge due to the necessity of simultaneously representing the connections and mapping attributes possibly generating overlapping elements. Among usual strategies to overcome this legibility problem we find filtering and aggregation that makes possible a simplified representation with reduced size and density providing a general view. However, this simplification may lead to a reduction of the amount of information being displayed, while in several applications the graph details still need to be represented in order to make possible in-depth data analysis. In face of that, we propose ClusterVis, a visualization technique aiming at exploring nodes attributes pertaining to sub-graphs, which are either obtained from clustering algorithms or some user-defined criteria. The technique allows comparing attributes of nodes while keeping the representation of the relationships among them. The technique was implemented within a visualization framework and evaluated by potential users.
Published: 2017
Full Text: View/download PDF

23. TWINS: Server Access Coordination in the I/O Forwarding Layer

Author: Jean-François Méhaut, Lucas Mello Schnorr, Jean Luca Bez, Francieli Zanon Boito, Philippe O. A. Navaux, Instituto de Informática da UFRGS (UFRGS), Universidade Federal do Rio Grande do Sul [Porto Alegre] (UFRGS), Universidade Federal de Santa Catarina = Federal University of Santa Catarina [Florianópolis] (UFSC), Compiler Optimization and Run-time Systems (CORSE), Inria Grenoble - Rhône-Alpes, Institut National de Recherche en Informatique et en Automatique (Inria)-Institut National de Recherche en Informatique et en Automatique (Inria)-Laboratoire d'Informatique de Grenoble (LIG ), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes [2016-2019] (UGA [2016-2019])-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes [2016-2019] (UGA [2016-2019]), STIC Amsud EnergySFE, Igor Kotenko, Yiannis Cotronis, Masoud Daneshtalab, and European Project: 689772,H2020 Pilier Industrial Leadership,H2020-EUB-2015,HPC4E(2015)
Subjects: File system, 020203 distributed computing, I/O scheduling, business.industry, Computer science, Distributed computing, Concurrency, High Performance Computing, 02 engineering and technology, computer.software_genre, Supercomputer, Scheduling (computing), Parallel File Sys- tems, I/O Scheduling, I/O Forwarding, Server, 0202 electrical engineering, electronic engineering, information engineering, 020201 artificial intelligence & image processing, [INFO.INFO-DC]Computer Science [cs]/Distributed, Parallel, and Cluster Computing [cs.DC], business, computer, Computer network, Access coordination
Abstract: International audience; This paper presents a study of I/O scheduling techniques applied to the I/O forwarding layer. In high-performance computing environments, applications rely on parallel file systems (PFS) to obtain good I/O performance even when handling large amounts of data. To alleviate the concurrency caused bythousands of nodes accessing a significantly smaller number of PFS servers, intermediate I/O nodes are typically applied between processing nodes and the file system. Each intermediate node forwards requests from multiple clients to the system, a setup which gives this component the opportunity to perform optimizations like I/O scheduling. We evaluate scheduling techniques that improve spatiality and request size of the access patterns. We show they are only partially effective because the access pattern is not the main factor for read performance in the I/O forwarding layer. A new scheduling algorithm, TWINS, is presented to coordinate the access of intermediate I/O nodes to the data servers. Our proposal decreases concurrency at the data servers, a factor previously proven to negatively affect performance. The proposed algorithm is able to improve read performance from shared files by up to 28% over other scheduling algorithms and by up to 50% over not forwarding I/O.
Published: 2017

24. Context-Aware Monitoring Agents for Ambient Assisted Living Applications

Author: Edson Prestes, Abdelghani Chibani, Yacine Amirat, Sandro Rama Fiorini, Sofiane Bouznad, Sabri Lyazid, Faouzi Sebbak, SIRIUS, Laboratoire Images, Signaux et Systèmes Intelligents ( LISSI ), Université Paris-Est Créteil Val-de-Marne - Paris 12 ( UPEC UP12 ) -Université Paris-Est Créteil Val-de-Marne - Paris 12 ( UPEC UP12 ), Laboratoire Images, Signaux et Systèmes Intelligents (LISSI), Université Paris-Est Créteil Val-de-Marne - Paris 12 (UPEC UP12)-Université Paris-Est Créteil Val-de-Marne - Paris 12 (UPEC UP12), UFRGS - Universidade Federal do Rio Grande do Sul [Porto Alegre], Amirat, Yacine, and Universidade Federal do Rio Grande do Sul [Porto Alegre] (UFRGS)
Subjects: [INFO.INFO-AI] Computer Science [cs]/Artificial Intelligence [cs.AI], Monitoring agent, Context-awareness, Computer science, Context (language use), 0102 computer and information sciences, 02 engineering and technology, 01 natural sciences, [INFO.INFO-AI]Computer Science [cs]/Artificial Intelligence [cs.AI], Human–computer interaction, 020204 information systems, [INFO.INFO-ET] Computer Science [cs]/Emerging Technologies [cs.ET], [ INFO.INFO-AU ] Computer Science [cs]/Automatic Control Engineering, 0202 electrical engineering, electronic engineering, information engineering, Ontologies, Smart rules, Context awareness, Semantic Web, ComputingMilieux_MISCELLANEOUS, Reasoning system, Ambient intelligence, business.industry, [ INFO.INFO-RB ] Computer Science [cs]/Robotics [cs.RO], Robotics, Ambient assisted living, Closed-world assumption, 010201 computation theory & mathematics, Software deployment, [INFO.INFO-ET]Computer Science [cs]/Emerging Technologies [cs.ET], Artificial intelligence, business
Abstract: International audience; This paper presents a knowledge-based engineering framework for the design, deployment and running of context-aware monitoring agents that are dedicated to ambient assisted living applications. A new modeling approach of agent knowledge, that combines the advantages of both ontologies and object oriented modeling and programming, is proposed. In this approach, the agents’ logic is implemented using a micro-ontology and production rules based on the closed world assumption, called smart rules. These rules are managed using a standard reasoning system embedded in the agent core. Unlike semantic web approaches, the proposed approach rely on the closed world and unique name assumptions. These features are required for monitoring purposes in ambient intelligence and robotics domains. We present a practical work, where monitoring agents are instantiated in the user environment and their reasoning rules operate to handle the detection and confirmation of abnormal and emergency situations with respect to user’s context. These rules allow the agents to trigger appropriate actions with help of companion robot.
Published: 2017

25. Performance Improvement of Stencil Computations for Multi-core Architectures based on Machine Learning

Author: Philippe O. A. Navaux, Márcio Castro, Fabrice Dupros, Víctor Martínez, Instituto de Informática da UFRGS (UFRGS), Universidade Federal do Rio Grande do Sul [Porto Alegre] (UFRGS), Bureau de Recherches Géologiques et Minières (BRGM) (BRGM), and Universidade Federal de Santa Catarina = Federal University of Santa Catarina [Florianópolis] (UFSC)
Subjects: Computer science, 020209 energy, Context (language use), 010103 numerical & computational mathematics, 02 engineering and technology, Parallel computing, Machine learning, computer.software_genre, 01 natural sciences, Stencil, 0202 electrical engineering, electronic engineering, information engineering, [INFO]Computer Science [cs], 0101 mathematics, General Environmental Science, Multi-core processor, business.industry, Stencil code, Translation lookaside buffer, FLAGS register, Multithreading, General Earth and Planetary Sciences, Compiler, Artificial intelligence, Performance improvement, business, computer
Abstract: International audience; Stencil computations are the basis to solve many problems related to Partial Differential Equations (PDEs). Obtaining the best performance with such numerical kernels is a major issue as many critical parameters (architectural features, compiler flags, memory policies, multithreading strategies) must be finely tuned. In this context, auto-tuning methods have been extensively used to improve the overall performance. However, the complexity of current architectures and the large number of optimizations to consider reduce the efficiency of this approach. This paper focuses on the use of Machine Learning to predict the performance of stencil kernels on multi-core architectures. Low-level hardware counters (e.g. cache-misses and TLB misses) on a limited number of executions are used to build our predictive model. We have considered two different kernels (7-point Jacobi and seismic wave modelling) to demonstrate the effectiveness of our approach. Our results show that performance can be predicted and that the best input configuration for stencil problems can be obtained by simulations of hardware counters and performance measurements.
Published: 2017
Full Text: View/download PDF

26. Evaluation of a Bacillus -Based Direct-Fed Microbial on Aflatoxin B1 Toxic Effects, Performance, Immunologic Status, and Serum Biochemical Parameters in Broiler Chickens

Author: Margarita A. Arreguin, Billy M. Hargis, V. M. Petrone, Ruben Merino-Guzman, Bruno Solis-Cruz, Guillermo Tellez-Isaias, Raquel López-Arellano, Juan D. Latorre, Daniel Hernandez-Patlan, Karine Patrin Pontin, Eric Beyssac, Xochitl Hernandez-Velasco, Universidad Autónoma del Estado de México (UAEM), Universidade Federal do Rio Grande do Sul (UFRGS), University of Arkansas, Microbiologie Environnement Digestif Santé (MEDIS), INRA Clermont-Ferrand-Theix-Université Clermont Auvergne [2017-2020] (UCA [2017-2020]), Eco-Bio LLC, Arkansas Bioscience Institute, Consejo Nacional de Ciencia y Tecnologia (CONACyT) 270730, Ecosystèmes, biodiversité, évolution [Rennes] (ECOBIO), Centre National de la Recherche Scientifique (CNRS)-Observatoire des Sciences de l'Univers de Rennes (OSUR)-Institut Ecologie et Environnement (INEE), Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES), Universidade Federal do Rio Grande do Sul [Porto Alegre] (UFRGS), and Institut National de la Recherche Agronomique (INRA)-Université Clermont Auvergne [2017-2020] (UCA [2017-2020])
Subjects: Aflatoxin, Antioxidant, 040301 veterinary sciences, [SDV]Life Sciences [q-bio], medicine.medical_treatment, Bacillus, Spleen, Biology, Feed conversion ratio, 0403 veterinary science, Animal science, Immune system, Food Animals, medicine, Bursa of Fabricius, 2. Zero hunger, broilers, General Immunology and Microbiology, business.industry, 0402 animal and dairy science, Broiler, 04 agricultural and veterinary sciences, direct-fed microbial, Poultry farming, 040201 dairy & animal science, medicine.anatomical_structure, aflatoxin B1, Animal Science and Zoology, business, performance
Abstract: International audience; The aim of the present study was to evaluate the effect of a commercial Bacillus direct-fed microbial (DFM) on aflatoxin B1 toxic effects, performance, and biochemical and immunologic parameters in broiler chickens. Ninety 1-day-old Cobb 500 male broiler chicks were raised in floor pens for a period of 21 days. Chicks were neck-tagged, individually weighed, and randomly allocated to one of three groups: Negative control (basal feed), aflatoxin B1 (basal feed + 2 ppm AFB1), and DFM (basal feed + 2 ppm AFB1 + Bacillus direct-fed microbial). Each group had three replicates of 10 chickens (n = 30/group). Body weight and body weight gain were calculated weekly, while feed intake and feed conversion ratio were determined when broilers were 21 days old. On day 21, all chickens were bled, gastrointestinal samples were collected, and spleen and bursa of Fabricius were weighed. This study confirmed that 2 ppm of AFB1 causes severe detrimental effects on performance, biochemical parameters, and immunologic parameters, generating hepatic lesions in broiler chickens (P < 0.05). However, it was also observed that DFM supplementation provided beneficial effects that might help to improve gut barrier function, anti-inflammatory and antioxidant activities, as well as humoral and cellular immunomodulation. The results of the present study suggest that this Bacillus-DFM added at a concentration of 10(6) spores/gram of feed can be used to counteract the negative effects that occur when birds consume diets contaminated with AFB1, showing beneficial effects on performance parameters, relative organ weights, hepatic lesions, immune response, and serum biochemical variables. The addition of this Bacillus-DFM might mitigate and decrease aflatoxicosis problems in the poultry industry, improving food security, alleviating public health problems, and providing economic benefits. Future studies are needed to fully elucidate the specific mechanisms by which this Bacillus-DFM counteracts the toxic effects of aflatoxin B1.
Published: 2019
Full Text: View/download PDF

27. Enhancing Energy Production with Exascale HPC Methods

Author: Marta Mattoso, Daniel de Oliveira, Alvaro L. G. A. Coutinho, Jorge Navarro, Vadim Kourdioumov, José María Cela, Manuel Rodríguez-Pascual, Carmen Jiménez, Rafael Mayo-García, Thomas Miras, José A. Moríñigo, Patrick Valduriez, Philippe O. A. Navaux, José J. Camata, Daniel Fernández-Galisteo, Renan Souza, Vítor Silva, Danilo Costa, Instituto Alberto Luiz Coimbra de Pós-Graduação e Pesquisa de Engenharia (COPPE-UFRJ), Universidade Federal do Rio de Janeiro (UFRJ), Barcelona Supercomputing Center - Centro Nacional de Supercomputacion (BSC - CNS), Centro de Investigaciones Energéticas Medioambientales y Tecnológicas [Madrid] (CIEMAT), Instituto de Informática da UFRGS (UFRGS), Universidade Federal do Rio Grande do Sul [Porto Alegre] (UFRGS), Scientific Data Management (ZENITH), Laboratoire d'Informatique de Robotique et de Microélectronique de Montpellier (LIRMM), Centre National de la Recherche Scientifique (CNRS)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS)-Université de Montpellier (UM)-Inria Sophia Antipolis - Méditerranée (CRISAM), Institut National de Recherche en Informatique et en Automatique (Inria)-Institut National de Recherche en Informatique et en Automatique (Inria), European Project: 689772,H2020 Pilier Industrial Leadership,H2020-EUB-2015,HPC4E(2015), Barcelona Supercomputing Center, and Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS)-Inria Sophia Antipolis - Méditerranée (CRISAM)
Subjects: ComputerSystemsOrganization_COMPUTERSYSTEMIMPLEMENTATION, Computer science, Energies [Àrees temàtiques de la UPC], Fonts d'energia, 02 engineering and technology, computer.software_genre, 7. Clean energy, HPC Challenge Benchmark, Energy sources, Supercomputadors, 0202 electrical engineering, electronic engineering, information engineering, Production (economics), Wind power, business.industry, 020206 networking & telecommunications, Supercomputer, ACM: C.: Computer Systems Organization/C.1: PROCESSOR ARCHITECTURES/C.1.4: Parallel Architectures, Systems engineering, Key (cryptography), Operating system, 020201 artificial intelligence & image processing, New energy sources, High performance computing, [INFO.INFO-DC]Computer Science [cs]/Distributed, Parallel, and Cluster Computing [cs.DC], business, Energy source, computer, High Performance Computing (HPC), Energy (signal processing)
Abstract: High Performance Computing (HPC) resources have become the key actor for achieving more ambitious challenges in many disciplines. In this step beyond, an explosion on the available parallelism and the use of special purpose processors are crucial. With such a goal, the HPC4E project applies new exascale HPC techniques to energy industry simulations, customizing them if necessary, and going beyond the state-of-the-art in the required HPC exascale simulations for different energy sources. In this paper, a general overview of these methods is presented as well as some specific preliminary results. The research leading to these results has received funding from the European Union's Horizon 2020 Programme (2014-2020) under the HPC4E Project (www.hpc4e.eu), grant agreement n° 689772, the Spanish Ministry of Economy and Competitiveness under the CODEC2 project (TIN2015-63562-R), and from the Brazilian Ministry of Science, Technology and Innovation through Rede Nacional de Pesquisa (RNP). Computer time on Endeavour cluster is provided by the Intel Corporation, which enabled us to obtain the presented experimental results in uncertainty quantification in seismic imaging
Published: 2016
Full Text: View/download PDF

28. Mercado de cadeias curtas na pecuária familiar: um processo de relocalização no território Alto Camaquã no sul do Rio Grande do Sul/Brasil

Author: M. F. S. Borba, Alessandra Matte, Márcio Zamboni Neske, Sergio Schneider, Paulo Dabdab Waquil, Alessandra Matte, UFRGS, Márcio Zamboni Neske, UERGS, MARCOS FLAVIO SILVA BORBA, CPPSUL, Paulo Dabdab Waquil, UFRGS, and Sergio Schneider, UFRGS.
Subjects: Relocation, Cordeiro, Rio Grande do Sul, Sul, Pecuária familiar, Desenvolvimento rural, Produção de alimentos, lcsh:Social Sciences, Agricultural science, Tacit knowledge, 0502 economics and business, Operations management, Mercado, lcsh:Human ecology. Anthropogeography, lcsh:Social sciences (General), Family livestock farmers, Agricultura familiar, General Environmental Science, Cadeias curtas. Desenvolvimento rural. Pecuária familiar. Relocalização, Short chain, business.industry, Ovino, Brasil, 05 social sciences, 04 agricultural and veterinary sciences, Product (business), lcsh:H, Pecuária, 040103 agronomy & agriculture, 0401 agriculture, forestry, and fisheries, General Earth and Planetary Sciences, Livestock, lcsh:H1-99, 050202 agricultural economics & policy, lcsh:GF1-900, business
Abstract: O objetivo deste artigo é estudar um caso de relocalização alimentar e formação de cadeias curtas em dado local no sul do Rio Grande do Sul, por meio da venda de cordeiro por pecuaristas familiares do território Alto Camaquã. Para tanto, o caso analisado envolveu uma experiência em curso da construção de mercados da pecuária familiar, em específico de produção e comercialização da carne de cordeiro. O mercado da carne de cordeiro dos pecuaristas familiares recebe destaque por consistir em uma estratégia de revalorização da procedência de origem dos alimentos, destacando a construção de cadeias curtas nas formas estratégicas elaboradas entre produtores e consumidores para o estabelecimento de relações de comercialização dos produtores, construindo, desse modo, um processo de revalorização de um lugar e de um produto. Sendo assim, a venda local por pequenos produtores representa, entre tantos significados, um comprometimento de preservação da comunidade, da tradição, de conhecimento tácitos, entre outros valores não mercantis. The aim of this paper is to study a case of food relocation and training of short chains in a given location in southern Rio Grande do Sul, through the sale of lamb ranchers for family livestock planning Alto Camaquã. Thus, the case analyzed involved an ongoing experience of building the family livestock farmers markets, in particular the production and marketing of lamb. The market lamb of family livestock farmers get highlighted because it consists of a strategy for upgrading the merits of origin for food, highlighting the construction of short chains in strategic ways compiled between producers and consumers to establish marketing relationships of producers, building thus a process of upgrading a place and a product. Thus, local sales by small producers is, among many meanings, a commitment to preserving the community, tradition, tacit knowledge, and other non-market values.
Published: 2016

29. Using Social Networks for Web Services Discovery

Author: José Palazzo Moreira de Oliveira, Leandro Krug Wives, Zakaria Maamar, Pedro Santos, Youakim Badr, Noura Faci, Zayed University, Service Oriented Computing (SOC), Laboratoire d'InfoRmatique en Image et Systèmes d'information (LIRIS), Institut National des Sciences Appliquées de Lyon (INSA Lyon), Institut National des Sciences Appliquées (INSA)-Université de Lyon-Institut National des Sciences Appliquées (INSA)-Université de Lyon-Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-École Centrale de Lyon (ECL), Université de Lyon-Université Lumière - Lyon 2 (UL2)-Institut National des Sciences Appliquées de Lyon (INSA Lyon), Université de Lyon-Université Lumière - Lyon 2 (UL2), Instituto de Informática da UFRGS (UFRGS), Universidade Federal do Rio Grande do Sul [Porto Alegre] (UFRGS), and Université de Lyon-Institut National des Sciences Appliquées (INSA)-Université de Lyon-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL)
Subjects: Web standards, medicine.medical_specialty, Web 2.0, Web development, Computer Networks and Communications, business.industry, Computer science, [INFO.INFO-WB]Computer Science [cs]/Web, 02 engineering and technology, computer.software_genre, Social Semantic Web, World Wide Web, Web Services Discovery, 020204 information systems, 0202 electrical engineering, electronic engineering, information engineering, medicine, 020201 artificial intelligence & image processing, Web service, business, WS-Policy, computer, Web modeling
Abstract: International audience; Social computing seems to be the new trend in Web applications development. FaceBook, Twitter, and LinkedIn are examples of a growing number of social applications that have reinforced the role of the Web as an inevitable communication means in this 21st cen- tury. FaceBook, alone, counts more than 350 million members in 2009, and more than 100,00 blogs are created daily. Social networking introduces a new dimension to the Web that goes beyond the exercise of connecting HTML pages; it opens up new forms of communication channels between people and between communities. Socializing over the Web lets people engage in various activities like looking for old friends, posting job announcements, and establishing new contacts. Parallel to the growing interest in integrating social elements into Web applications de- velopment, service computing rises as another alternative to this development. In response to challenges that modern enterprises face such as agility and competitiveness, today’s ap- plications need to be loosely coupled and capable to cross organization boundaries. Web services are a core technology that showcases the value-added of service computing to enterprises. A long list of standards and specifications (WS-*) sustain the adoption of Web services, besides the possibility of composing separate Web services to generate new added-value services. Someone would wonder the synergy that might exist between social computing and service computing. On the one hand, social computing allows to reflect relationships that people daily experience like friendship and dislike on automated structures known as social networks. On the other hand, service computing allows to develop applications as per the basic principle of “I offer services that somebody else may need” and “I require services that somebody else may offer”. Offering and requiring services raises issues such as how to advertise services to the external community, how to discover services with respect to needs, how to trust services when they are found, and how to replace services when they 1www.FaceBook.com, visited in Fall 2009. We address some of these issues by capturing the way the Web services interact with peers using social networks. Indeed services evolve in a dynamic environment in which they compete against peers so they can be selected, collaborate with peers so they can altogether work on complex users’ requests, substitute peers in case of failure so a high- level of availability can be achieved, just to cite a few examples of all the interactions that services initiate and hence, can be used for building these services’ social networks. Our work on social networks and Web services has two main goals: build Web ser- vices’ social networks and support Web services use these networks. We motivate our work further in the next section. After that a running example illustrates the nature of interactions between Web services. Details on what we refer to as social Web services are given prior to showing some experiments, discussing some related work, and drawing some conclusions.
Published: 2011
Full Text: View/download PDF

30. SMART: An Application Framework for Real Time Big Data Analysis on Heterogeneous Cloud Environments

Author: Joao Paulo C. L. da Costa, Julio C. S. dos Anjos, Marcos Dias De Assuncao, Alexandre Carissimi, Volker Markl, Gilles Fedak, Edison Pignaton de Freitas, Paul Fergus, Cláudio F. R. Geyer, Rubem Pereira, Felix Freitag, Jean Luca Bez, Instituto de Informática da UFRGS (UFRGS), Universidade Federal do Rio Grande do Sul [Porto Alegre] (UFRGS), Algorithms and Software Architectures for Distributed and HPC Platforms (AVALON), Inria Grenoble - Rhône-Alpes, Institut National de Recherche en Informatique et en Automatique (Inria)-Institut National de Recherche en Informatique et en Automatique (Inria)-Laboratoire de l'Informatique du Parallélisme (LIP), École normale supérieure de Lyon (ENS de Lyon)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Recherche en Informatique et en Automatique (Inria)-Centre National de la Recherche Scientifique (CNRS)-École normale supérieure de Lyon (ENS de Lyon)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS), Universidade de Brasilia [Brasília] (UnB), Universitat Politècnica de Catalunya [Barcelona] (UPC), Technical University of Berlin / Technische Universität Berlin (TU), Liverpool John Moores University, IEEE, Grid5000, Universitat Politècnica de Catalunya. Departament d'Arquitectura de Computadors, Universitat Politècnica de Catalunya. CNDS - Xarxes de Computadors i Sistemes Distribuïts, Centre National de la Recherche Scientifique (CNRS)-Université de Lyon-Institut National de Recherche en Informatique et en Automatique (Inria)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-École normale supérieure - Lyon (ENS Lyon)-Centre National de la Recherche Scientifique (CNRS)-Université de Lyon-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-École normale supérieure - Lyon (ENS Lyon), and Technische Universität Berlin (TU)
Subjects: Service (systems architecture), Data warehouses, Computació en núvol, Computer science, Big data, Data analysis, Cloud computing, 02 engineering and technology, Data modeling, [INFO.INFO-NI]Computer Science [cs]/Networking and Internet Architecture [cs.NI], Composability, 020204 information systems, 0202 electrical engineering, electronic engineering, information engineering, Informàtica::Arquitectura de computadors [Àrees temàtiques de la UPC], business.industry, Gestor de dades, Data science, Enterprise data management, Data warehousing, Wireless sensor networks, Data warehouse, 020202 computer hardware & architecture, Small-to-medium enterprises, business, Wireless sensor network
Abstract: International audience; The amount of data that human activities generate poses a challenge to current computer systems. Big data processing techniques are evolving to address this challenge, with analysis increasingly being performed using cloud-based systems. Emerging services, however, require additional enhancements in order to ensure their applicability to highly dynamic and heterogeneous environments and facilitate their use by Small & Medium-sized Enterprises (SMEs). Observing this landscape in emerging computing system development, this work presents Small & Medium-sized Enterprise Data Analytic in Real Time (SMART) for addressing some of the issues in providing compute service solutions for SMEs. SMART offers a framework for efficient development of Big Data analysis services suitable to small and medium-sized organizations, considering very heterogeneous data sources, from wireless sensor networks to data warehouses, focusing on service composability for a number of domains. This paper presents the basis of this proposal and preliminary results on exploring application deployment on hybrid infrastructure.
Published: 2015
Full Text: View/download PDF

31. A state feedback input constrained control design for a 4-semi-active damper suspension system: a quasi-LPV approach

Author: Manh Quan Nguyen, Olivier Sename, Luc Dugard, J.M. Gomes da Silva, GIPSA - Systèmes linéaires et robustesse (GIPSA-SLR), Département Automatique (GIPSA-DA), Grenoble Images Parole Signal Automatique (GIPSA-lab), Université Stendhal - Grenoble 3-Université Pierre Mendès France - Grenoble 2 (UPMF)-Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Centre National de la Recherche Scientifique (CNRS)-Université Stendhal - Grenoble 3-Université Pierre Mendès France - Grenoble 2 (UPMF)-Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Centre National de la Recherche Scientifique (CNRS)-Grenoble Images Parole Signal Automatique (GIPSA-lab), Université Stendhal - Grenoble 3-Université Pierre Mendès France - Grenoble 2 (UPMF)-Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Centre National de la Recherche Scientifique (CNRS)-Université Stendhal - Grenoble 3-Université Pierre Mendès France - Grenoble 2 (UPMF)-Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Centre National de la Recherche Scientifique (CNRS), Departamento de Engenharia Eletrica (UFRGS), Universidade Federal do Rio Grande do Sul [Porto Alegre] (UFRGS), Université Pierre Mendès France - Grenoble 2 (UPMF)-Université Stendhal - Grenoble 3-Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Centre National de la Recherche Scientifique (CNRS)-Université Pierre Mendès France - Grenoble 2 (UPMF)-Université Stendhal - Grenoble 3-Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Centre National de la Recherche Scientifique (CNRS)-Grenoble Images Parole Signal Automatique (GIPSA-lab), and Université Pierre Mendès France - Grenoble 2 (UPMF)-Université Stendhal - Grenoble 3-Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Centre National de la Recherche Scientifique (CNRS)-Université Pierre Mendès France - Grenoble 2 (UPMF)-Université Stendhal - Grenoble 3-Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Centre National de la Recherche Scientifique (CNRS)
Subjects: 0209 industrial biotechnology, Engineering, business.industry, Attenuation, 020208 electrical & electronic engineering, Control engineering, Input saturation, 02 engineering and technology, Stability (probability), Damper, [SPI.AUTO]Engineering Sciences [physics]/Automatic, Nonlinear system, 020901 industrial engineering & automation, Control and Systems Engineering, Control theory, Semi-active suspension, 0202 electrical engineering, electronic engineering, information engineering, LPV/H ∞ control, State (computer science), Generalized section condition, Suspension (vehicle), business, Saturation (chemistry), State Feedback
Abstract: International audience; This paper addresses a semi-active suspension control of the full vehicle equipped with 4 controlled semi-active dampers by using a full 7 degree of freedom (DOF) vertical model. First, the dissipativity conditions of the semi-active dampers are recast as saturation conditions on the control inputs. Then, the suspension controller is derived by solving a state feedback control design problem for a class of linear parameter-varying (LPV) system in the presence of actuator saturation. To this aim, a generalized sector condition for LPV system is applied to treat the nonlinearity, caused by the input saturation and to relax the stability condition. The proposed control law ensures the disturbance attenuation by reducing the L 2 gain from the disturbance to the controlled output. This controller, derived in the LPV/H ∞ framework, is based on the LMI solution for polytopic systems. Some realistic simulation results are presented in order to illustrate the effectiveness of the proposed approach.
Published: 2015
Full Text: View/download PDF

32. Excretas de Ovinos Como Fonte de Óxido Nitroso em Pastagem de Azevém no Sul do Brasil

Author: Joice Mari Assmann, Tatiane Bagatini, Emanuelle Cavazini Magiero, Paulo César de Faccio Carvalho, Michely Tomazi, Cimélio Bayer, Jeferson Dieckow, MICHELY TOMAZI, CPAO, EMANUELE CAVAZINI MAGIERO, UFRGS, JOICE MARI ASSMANN, UFRGS, TATIANE BAGATINI, UFRGS, JEFERSON DIECKOW, UFPR, PAULO CÉSAR DE FACCIO CARVALHO, UFRGS, and CIMÉLIO BAYER, UFRGS.
Subjects: Oxido nitroso, Alteração climática, Dung, Urina, Integração lavoura-pecuária, Efeito Estufa, Soil Science, Characterisation of pore space in soil, Urine, Pasture, Emission factor, Pastagem, chemistry.chemical_compound, Soil nitrate, Grazing, Ciclo do nitrogênio, Climate change, fator de emissão, lcsh:Agriculture (General), fezes, Azevém, geography, Relação solo-planta, geography.geographical_feature_category, urina, business.industry, integração lavoura-pecuária, Ovino, Nitrous oxide, alterações climáticas, lcsh:S1-972, Agronomy, chemistry, gases, Environmental science, Livestock, Esterco, Crop-livestock system, business, Agronomy and Crop Science
Abstract: Livestock urine and dung are important components of the N cycle in pastures, but little information on its effect on soil nitrous oxide (N2O) emissions is available. We conducted a short-term (39-day) trial to quantify the direct N2O-N emissions from sheep excreta on an experimental area of ryegrass pasture growing on a Typic Paleudult in southern Brazil. Four rates of urine-N (161, 242, 323, and 403 kg ha-1 N) and one of dung-N (13 kg ha-1 N) were applied, as well as a control plot receiving no excreta. The N2O-N emission factor (EF = % of added N released as N2O-N) for urine and dung was calculated, taking into account the N2O fluxes in the field, over a period of 39 days. The EF value of the urine and dung was used to estimate the emissions of N2O-N over a 90-day period of pasture in the winter under two grazing intensities (2.5 or 5.0 times the herbage intake potential of grazing lambs). The soil N2O-N fluxes ranged from 4 to 353 µg m-2h-1. The highest N2O-N fluxes occurred 16 days after application of urine and dung, when the highest soil nitrate content was also recorded and the water-filled pore space exceeded 60 %. The mean EF for urine was 0.25 % of applied N, much higher than that for dung (0.06 %). We found that N2O-N emissions for the 90-day winter pasture period were 0.54 kg ha-1 for low grazing intensity and 0.62 kg ha-1 for moderate grazing intensity. Comparison of the two forms of excreta show that urine was the main contributor to N2O-N emissions (mean of 36 %), whereas dung was responsible for less than 0.1 % of total soil N2O-N emissions. RESUMO Urina e fezes de ovinos são componentes importantes do ciclo do N em pastagens, mas pouco se sabe sobre o efeito desses nas emissões de óxido nitroso (N2O) para atmosfera. Um estudo foi conduzido para quantificar as emissões de N-N2O provenientes das excretas de ovinos sobre uma pastagem de azevém num Argissolo Vermelho Distrófico típico no sul do Brasil. Quatro doses de N-urina (161, 242, 323 e 403 kg ha-1 N) e uma de N-fezes (13 kg ha-1 N) foram aplicadas, além de um tratamento-controle sem aplicação de excretas. O fator de emissão de N-N2O (FE = % do N adicionado emitido na forma de N-N2O) foi calculado para urina e fezes, levando em consideração os fluxos de N2O determinados no período de 39 dias. Os FEs da urina e fezes foram utilizados para estimar as emissões de N-N2O num período de 90 dias da pastagem no inverno, sob duas intensidades de pastejo (2,5 e 5,0 vezes o potencial de consumo dos ovinos). Os fluxos de N-N2O variaram de 4 a 353 µg m-2 h-1. Os fluxos mais elevados de N-N2O ocorreram 16 dias após a aplicação da urina e das fezes, quando os teores mais elevados de nitrato ocorreram e a porosidade preenchida por água excedeu 60 %. O FE médio da urina foi 0,25 % do N aplicado, muito superior ao verificado para as fezes (0,06 %). Considerando o período de 90 dias de utilização da pastagem no inverno, estimou-se que a emissão de N-N2O foi de 0,54 kg ha-1 na intensidade de pastejo baixa e de 0,62 kg ha-1 na intensidade de pastejo moderada. Entre as excretas, a urina foi o principal contribuinte para a emissão de N-N2O (media de 36 %), enquanto as fezes foram responsáveis por menos do que 0,1 % das emissões totais de N-N2O do solo.
Published: 2015

33. Saving Energy by Exploiting Residual Imbalances on Iterative Applications

Author: Philippe O. A. Navaux, Edson Luiz Padoin, Jean-François Méhaut, Márcio Castro, Laércio Lima Pilla, Laboratoire d'Informatique de Grenoble, Laboratoire d'Informatique de Grenoble (LIG), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National Polytechnique de Grenoble (INPG)-Centre National de la Recherche Scientifique (CNRS)-Université Pierre Mendès France - Grenoble 2 (UPMF)-Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National Polytechnique de Grenoble (INPG)-Centre National de la Recherche Scientifique (CNRS)-Université Pierre Mendès France - Grenoble 2 (UPMF)-Université Joseph Fourier - Grenoble 1 (UJF), Instituto de Informática da UFRGS (UFRGS), Universidade Federal do Rio Grande do Sul [Porto Alegre] (UFRGS), NANOSIM, European Project: 295217,EC:FP7:PEOPLE,FP7-PEOPLE-2011-IRSES,HPC-GA(2012), European Project: 288777,EC:FP7:ICT,FP7-ICT-2011-7,MONT-BLANC(2011), and Université Pierre Mendès France - Grenoble 2 (UPMF)-Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National Polytechnique de Grenoble (INPG)-Centre National de la Recherche Scientifique (CNRS)
Subjects: Multi-core processor, Computer science, business.industry, 05 social sciences, Clock rate, 050301 education, 02 engineering and technology, Energy consumption, Load balancing (computing), Residual, Supercomputer, 7. Clean energy, Load management, Embedded system, 0202 electrical engineering, electronic engineering, information engineering, 020201 artificial intelligence & image processing, [INFO.INFO-DC]Computer Science [cs]/Distributed, Parallel, and Cluster Computing [cs.DC], business, 0503 education, Energy (signal processing), ComputingMilieux_MISCELLANEOUS
Abstract: The power consumption of High Performance Computing (HPC) systems is an increasing concern as large-scale systems grow in size and, consequently, consume more energy. In response to this challenge, we propose two variants of a new energy-aware load balancer that aim at reducing the energy consumption of parallel platforms running imbalanced scientific applications without degrading their performance. Our research combines dynamic load balancing with DVFS techniques in order to reduce the clock frequency of underloaded computing cores which experience some residual imbalance even after tasks are remapped. Experimental results with benchmarks and a real-world application presented energy savings of up to 32% with our fine-grained variant that performs per-core DVFS, and of up to 34% with our coarsegrained variant that performs per-chip DVFS.
Published: 2014

34. Detection of decreased glomerular filtration rate in intensive care units: serum cystatin C versusserum creatinine

Author: Pierre Delanaye, J. Morel, Pierre Damas, Jean-Marie Krzesinski, Alexandre Lautrette, M. Mehdi, Etienne Cavalier, Christophe Mariat, Guillaume Claisse, Bernard Dubois, Nicolas Maillard, Bernard Lambermont, Centre Hospitalier Universitaire de Liège (CHU-Liège), Service de réanimation chirurgicale, CHU de Saint Etienne, Ecole Nationale d'Agriculture - Meknès, Ecole Nationale d?Agriculture - Meknès, Instituto de Informática da UFRGS (UFRGS), Universidade Federal do Rio Grande do Sul [Porto Alegre] (UFRGS), Laboratoire de Chimie du Solide, Université de Bordeaux (UB)-Centre National de la Recherche Scientifique (CNRS), Unité de soins intensifs [Clermont Ferrand], CHU Clermont-Ferrand-CHU Gabriel Montpied [Clermont-Ferrand], CHU Clermont-Ferrand, Laboratoire Microorganismes : Génome et Environnement (LMGE), Université Clermont Auvergne [2017-2020] (UCA [2017-2020])-Centre National de la Recherche Scientifique (CNRS), Service de néphrologie et tranplantation, CHU Saint-Etienne-Hôpital nord, Hémostase, Inflammation et sepsis (EA 4609), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-VetAgro Sup - Institut national d'enseignement supérieur et de recherche en alimentation, santé animale, sciences agronomiques et de l'environnement (VAS), Hémostase, Inflammation et sepsis, Université Claude Bernard Lyon 1 ( UCBL ), Université de Lyon-Université de Lyon-VetAgro Sup ( VAS ), Instituto de Informática da UFRGS ( UFRGS ), Universidade Federal do Rio Grande do Sul [Porto Alegre] ( UFRGS ), CHU Clermont-Ferrand-Hôpital Gabriel Montpied, and Centre Hospitalier Universitaire de Saint-Etienne [CHU Saint-Etienne] (CHU ST-E)
Subjects: Male, medicine.medical_specialty, Critical Care, Urology, Kidney failure, Renal function, Context (language use), urologic and male genital diseases, Sensitivity and Specificity, behavioral disciplines and activities, [SDV.MP.PRO]Life Sciences [q-bio]/Microbiology and Parasitology/Protistology, chemistry.chemical_compound, Internal medicine, Intensive care, [ SDV.MHEP ] Life Sciences [q-bio]/Human health and pathology, medicine, Humans, Cystatin C, ComputingMilieux_MISCELLANEOUS, Creatinine, biology, business.industry, Acute kidney injury, Reproducibility of Results, Acute Kidney Injury, [ SDV.MP.PRO ] Life Sciences [q-bio]/Microbiology and Parasitology/Protistology, medicine.disease, [SDV.MP.BAC]Life Sciences [q-bio]/Microbiology and Parasitology/Bacteriology, 3. Good health, Intensive Care Units, Endocrinology, chemistry, Decreased glomerular filtration rate, Nephrology, biology.protein, Female, France, Iohexol, business, Biomarkers, [SDV.MHEP]Life Sciences [q-bio]/Human health and pathology, Research Article, Glomerular Filtration Rate, medicine.drug
Abstract: International audience; BACKGROUND: Detecting impaired glomerular filtration rate (GFR) is important in intensive care units (ICU) in order to diagnose acute kidney injuries and adjust the dose of renally excreted drugs. Whether serum Cystatin C (SCysC) may better reflect glomerular filtration rate than serum creatinine (SCr) in the context of intensive care medicine is uncertain. METHODS: We compared the performance of SCysC and SCr as biomarkers of GFR in 47 critically ill patients (median SOFA (Sepsis-related Organ Failure Assessment) score of 5) for whom GFR was measured by a reference method (urinary clearance of iohexol). RESULTS: Mean Iohexol clearance averaged 96 ± 54 mL/min and was under 60 mL/min in 28% of patients. Mean SCr and SCysC concentrations were 0.70 ± 0.33 mg/dL and 1.26 ± 0.61 mg/L, respectively. Area under the ROC curve for a GFR threshold of 60 mL/min was 0.799 and 0.942 for SCr and SCysC, respectively (p = 0.014). CONCLUSIONS: We conclude that ScysC significantly outperfoms SCr for the detection of an impaired GFR in critically ill patients. TRIAL REGISTRATION: ClinicalTrials.gov: B7072006347.
Published: 2014
Full Text: View/download PDF

35. Applying the Oscillation Test Strategy to FPAA’s Configurable Analog Blocks

Author: Michel Renovell, Florence Azaïs, Marcelo Lubaszewski, Tiago R. Balen, A. Andrade, Departamento de Engenharia Eletrica (UFRGS), Universidade Federal do Rio Grande do Sul [Porto Alegre] (UFRGS), Conception et Test de Systèmes MICroélectroniques (SysMIC), Laboratoire d'Informatique de Robotique et de Microélectronique de Montpellier (LIRMM), and Centre National de la Recherche Scientifique (CNRS)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS)-Université de Montpellier (UM)
Subjects: Engineering, business.industry, 020208 electrical & electronic engineering, Oscillation test, 02 engineering and technology, Signal, Field (computer science), Signature (logic), 020202 computer hardware & architecture, Amplitude, Field-programmable analog array, 0202 electrical engineering, electronic engineering, information engineering, Electronic engineering, Device under test, [SPI.NANO]Engineering Sciences [physics]/Micro and nanotechnologies/Microelectronics, Electrical and Electronic Engineering, business, ComputingMilieux_MISCELLANEOUS, Parametric statistics
Abstract: This paper presents the application of the oscillation test methodology as an alternative to test configurable analog blocks of Field Programmable Analog Arrays. The blocks of the device under test are first configured to behave as oscillators. Then, the output frequency and amplitude are observed to obtain the signature of the fault-free circuit. During test, this signature is compared to the actual output signal. Experimental results show the effectiveness of the method in detecting parametric and large deviation faults of the tested components.
Published: 2005
Full Text: View/download PDF

36. A New FPGA for DSP Applications Integrating BIST Capabilities

Author: Alex Gonsales, Marcelo Lubaszewski, Michel Renovell, Luigi Carro, Instituto de Informática, Programa de Pós-Graduação em Computação [Porto Alegre] (PPGC), Universidade Federal do Rio Grande do Sul [Porto Alegre] (UFRGS), PPGEE, UFRGS, Conception et Test de Systèmes MICroélectroniques (SysMIC), Laboratoire d'Informatique de Robotique et de Microélectronique de Montpellier (LIRMM), Centre National de la Recherche Scientifique (CNRS)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS)-Université de Montpellier (UM), and Carvalho De Matos, Christine
Subjects: Engineering, Signal processing, business.industry, [SPI.NANO] Engineering Sciences [physics]/Micro and nanotechnologies/Microelectronics, 020208 electrical & electronic engineering, System testing, Reconfigurability, 02 engineering and technology, Reuse, Reconfigurable computing, 020202 computer hardware & architecture, Embedded system, 0202 electrical engineering, electronic engineering, information engineering, [SPI.NANO]Engineering Sciences [physics]/Micro and nanotechnologies/Microelectronics, Electrical and Electronic Engineering, business, Field-programmable gate array, ComputingMilieux_MISCELLANEOUS, Digital signal processing, FPGA prototype
Abstract: This work proposes a new FPGA architecture, to meet the requirements of signal processing and testing of current system-on-chip designs. The proposed architecture provides the hardware reuse and the reconfigurability advantages of an FPGA, not only for the system functionality, but also for the system testing, while keeping the performance level required by current signal processing applications. This paper presents the new FPGA model, along with preliminary experimental results that clearly show the possible advantages at the system level of merging design and test in a reconfigurable device.
Published: 2004
Full Text: View/download PDF

37. Energy Efficient Seismic Wave Propagation Simulation on a Low-power Manycore Processor

Author: Fabrice Dupros, Emilio Francesquini, Jean-François Méhautk, Philippe O. A. Navaux, Márcio Castro, Instituto de Informática da UFRGS (UFRGS), Universidade Federal do Rio Grande do Sul [Porto Alegre] (UFRGS), Bureau de Recherches Géologiques et Minières (BRGM) (BRGM), Department of Computer Science (IME-USP), University of São Paulo (USP), NANOSIM, Laboratoire d'Informatique de Grenoble (LIG), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National Polytechnique de Grenoble (INPG)-Centre National de la Recherche Scientifique (CNRS)-Université Pierre Mendès France - Grenoble 2 (UPMF)-Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National Polytechnique de Grenoble (INPG)-Centre National de la Recherche Scientifique (CNRS)-Université Pierre Mendès France - Grenoble 2 (UPMF)-Université Joseph Fourier - Grenoble 1 (UJF), and IEEE Xplore Digital Library
Subjects: Manycore processor, Memory management, business.industry, Computer science, Software development, Parallel computing, [INFO.INFO-DC]Computer Science [cs]/Distributed, Parallel, and Cluster Computing [cs.DC], business, Supercomputer, Seismic wave, Energy (signal processing), Efficient energy use, Data transmission
Abstract: International audience; Large-scale simulation of seismic wave propagation is an active research topic. Its high demand for processing power makes it a good match for High Performance Computing (HPC). Although we have observed a steady increase on the processing capabilities of HPC platforms, their energy efficiency is still lacking behind. In this paper, we analyze the use of a low-power manycore processor, the MPPA-256, for seismic wave propagation simulations. First we look at its peculiar characteristics such as limited amount of on-chip memory and describe the intricate solution we brought forth to deal with this processor's idiosyncrasies. Next, we compare the performance and energy efficiency of seismic wave propagation on MPPA-256 to other commonplace platforms such as general-purpose processors and a GPU. Finally, we wrap up with the conclusion that, even if MPPA-256 presents an increased software development complexity, it can indeed be used as an energy efficient alternative to current HPC platforms, resulting in up to 71% and 5.18x less energy than a GPU and a general-purpose processor, respectively.
Published: 2014

38. Voltage scaling and aging effects on soft error rate in SRAM-based FPGAs

Author: Christopher D. Frost, Pascal Benoit, Gilson Wirth, Thiago H. Both, Florent Bruguier, Ricardo Reis, Lionel Torres, Paolo Rech, Jorge Tonfat, Fernanda Lima Kastensmidt, PgMicro - Instituto de Informática [UFRGS] (PGMICRO), Universidade Federal do Rio Grande do Sul [Porto Alegre] (UFRGS), Departamento de Engenharia Eletrica (UFRGS), Conception et Test de Systèmes MICroélectroniques (SysMIC), Laboratoire d'Informatique de Robotique et de Microélectronique de Montpellier (LIRMM), Centre National de la Recherche Scientifique (CNRS)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS)-Université de Montpellier (UM), ISIS Neutron and Muon Source (ISIS), STFC Rutherford Appleton Laboratory (RAL), Science and Technology Facilities Council (STFC)-Science and Technology Facilities Council (STFC), PgMicro - Instituto de Informática [UFRGS] ( PGMICRO ), Universidade Federal do Rio Grande do Sul [Porto Alegre] ( UFRGS ), Departamento de Engenharia Eletrica ( UFRGS ), Conception et Test de Systèmes MICroélectroniques ( SysMIC ), Laboratoire d'Informatique de Robotique et de Microélectronique de Montpellier ( LIRMM ), Université de Montpellier ( UM ) -Centre National de la Recherche Scientifique ( CNRS ) -Université de Montpellier ( UM ) -Centre National de la Recherche Scientifique ( CNRS ), Science and Technology Facilities Council ( ISIS ), and Rutherford Appleton Laboratory
Subjects: Engineering, business.industry, Hardware_PERFORMANCEANDRELIABILITY, Condensed Matter Physics, Voltage and aging in FPGAs, Atomic and Molecular Physics, and Optics, Programmable circuits, Surfaces, Coatings and Films, Electronic, Optical and Magnetic Materials, Power (physics), Soft error, Electronic engineering, [ SPI.NANO ] Engineering Sciences [physics]/Micro and nanotechnologies/Microelectronics, Static random-access memory, Electrical and Electronic Engineering, [SPI.NANO]Engineering Sciences [physics]/Micro and nanotechnologies/Microelectronics, Safety, Risk, Reliability and Quality, Neutron irradiation, Field-programmable gate array, business, Scaling, Neutron induced soft error, Voltage, Soft error rate in FPGAs
Abstract: International audience; This work investigates the effects of aging and voltage scaling in neutron-induced bit-flip in SRAM-based Field Programmable Gate Array (FPGA). Experimental results show that aging and voltage scaling can increase in at least two times the susceptibility of SRAM-based FPGAs to Soft Error Rate (SER). These results are innovative, because they combine three real effects that occur in programmable circuits operating at ground-level applications. In addition, a model at electrical level for aging, soft error and different voltages in SRAM memory cells was described to investigate by simulation in more details the effects observed at the practical neutron irradiation experiment. Results can guide designers to predict soft error effects during the lifetime of devices operating in different power supply mode.
Published: 2014
Full Text: View/download PDF

39. Aging and voltage scaling impacts under neutron-induced soft error rate in SRAM-based FPGAs

Author: Paolo Rech, Christopher D. Frost, Thiago H. Both, Florent Bruguier, Ricardo Reis, Fernanda Lima Kastensmidt, Jorge Tonfat, Lionel Torres, Pascal Benoit, Gilson Wirth, PgMicro - Instituto de Informática [UFRGS] (PGMICRO), Universidade Federal do Rio Grande do Sul [Porto Alegre] (UFRGS), Departamento de Engenharia Eletrica (UFRGS), Conception et Test de Systèmes MICroélectroniques (SysMIC), Laboratoire d'Informatique de Robotique et de Microélectronique de Montpellier (LIRMM), Centre National de la Recherche Scientifique (CNRS)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS)-Université de Montpellier (UM), ISIS Neutron and Muon Source (ISIS), STFC Rutherford Appleton Laboratory (RAL), Science and Technology Facilities Council (STFC)-Science and Technology Facilities Council (STFC), PgMicro - Instituto de Informática [UFRGS] ( PGMICRO ), Universidade Federal do Rio Grande do Sul [Porto Alegre] ( UFRGS ), Departamento de Engenharia Eletrica ( UFRGS ), Conception et Test de Systèmes MICroélectroniques ( SysMIC ), Laboratoire d'Informatique de Robotique et de Microélectronique de Montpellier ( LIRMM ), Université de Montpellier ( UM ) -Centre National de la Recherche Scientifique ( CNRS ) -Université de Montpellier ( UM ) -Centre National de la Recherche Scientifique ( CNRS ), Science and Technology Facilities Council ( ISIS ), and Rutherford Appleton Laboratory
Subjects: Engineering, business.industry, aging, volage scalling, Hardware_PERFORMANCEANDRELIABILITY, Radiation, Power (physics), radiation, Soft error, Electronic engineering, Neutron, [ SPI.NANO ] Engineering Sciences [physics]/Micro and nanotechnologies/Microelectronics, Static random-access memory, [SPI.NANO]Engineering Sciences [physics]/Micro and nanotechnologies/Microelectronics, Field-programmable gate array, business, Scaling, FPGA, Voltage
Abstract: International audience; This work investigates the effects of aging and voltage scaling in neutron-induced bit-flip in SRAM-based FPGAs. Experimental results show that aging and voltage scaling can increase in at least two times the susceptibility of SRAM-based FPGAs to Soft Error Rate (SER). These results are innovative, because they combine three real effects that occur in programmable circuits operating at ground-level applications. In addition, a model at electrical simulation for aging, soft error and different voltages was described to investigate the effects observed at the practical neutron irradiation experiment. Results can guide designers to predict soft error effects during the lifetime of devices operating in different power supply mode.
Published: 2014
Full Text: View/download PDF

40. Overview and State-of-the-Art of Uncertainty Visualization

Author: Chris R. Johnson, Manuel M. Oliveira, Hans-Christian Hege, Penny Rheingans, Thomas Schultz, Georges-Pierre Bonneau, Kristin Potter, Models and Algorithms for Visualization and Rendering (MAVERICK), Inria Grenoble - Rhône-Alpes, Institut National de Recherche en Informatique et en Automatique (Inria)-Institut National de Recherche en Informatique et en Automatique (Inria)-Laboratoire Jean Kuntzmann (LJK), Centre National de la Recherche Scientifique (CNRS)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Université Joseph Fourier - Grenoble 1 (UJF)-Université Pierre Mendès France - Grenoble 2 (UPMF)-Centre National de la Recherche Scientifique (CNRS)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Université Joseph Fourier - Grenoble 1 (UJF)-Université Pierre Mendès France - Grenoble 2 (UPMF), Zuse Institute Berlin (ZIB), Scientific Computing and Imaging Institute (SCI Institute), University of Utah, Instituto de Informática da UFRGS (UFRGS), Universidade Federal do Rio Grande do Sul [Porto Alegre] (UFRGS), University of Maryland [College Park], University of Maryland System, Hansen, Charles and Chen, Min and Johnson, Chris and Kaufman, Arie and Hagen, Hans, and Université Pierre Mendès France - Grenoble 2 (UPMF)-Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Centre National de la Recherche Scientifique (CNRS)-Université Pierre Mendès France - Grenoble 2 (UPMF)-Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Centre National de la Recherche Scientifique (CNRS)
Subjects: Uncertainty Visualization, Management science, Computer science, business.industry, Representation (systemics), 020207 software engineering, Volume rendering, 02 engineering and technology, Data science, Visualization, Information visualization, 0202 electrical engineering, electronic engineering, information engineering, Key (cryptography), Sybil attack, 020201 artificial intelligence & image processing, [INFO]Computer Science [cs], State (computer science), business
Abstract: International audience; The goal of visualization is to effectively and accurately communicate data. Visualization research has often overlooked the errors and uncertainty which accompany the scientific process and describe key characteristics used to fully understand the data. The lack of these representations can be attributed, in part, to the inherent difficulty in defining, characterizing, and controlling this uncertainty, and in part, to the difficulty in including additional visual metaphors in a well designed, potent display. However, the exclusion of this information cripples the use of visualization as a decision making tool due to the fact that the display is no longer a true representation of the data. This systematic omission of uncertainty commands fundamental research within the visualization community to address, integrate, and expect uncertainty information. In this chapter, we outline sources and models of uncertainty, give an overview of the state-of-the-art, provide general guidelines, outline small exemplary applications, and finally, discuss open problems in uncertainty visualization.
Published: 2014
Full Text: View/download PDF

41. On the Validity of Flow-level TCP Network Models for Grid and Cloud Simulations

Author: Henri Casanova, Arnaud Legrand, Lucas Mello Schnorr, Pedro Velho, Instituto de Informática da UFRGS (UFRGS), Universidade Federal do Rio Grande do Sul [Porto Alegre] (UFRGS), Information and Computer Sciences [Hawaii] (ICS), University of Hawai‘i [Mānoa] (UHM), Middleware efficiently scalable (MESCAL), Laboratoire d'Informatique de Grenoble (LIG), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National Polytechnique de Grenoble (INPG)-Centre National de la Recherche Scientifique (CNRS)-Université Pierre Mendès France - Grenoble 2 (UPMF)-Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National Polytechnique de Grenoble (INPG)-Centre National de la Recherche Scientifique (CNRS)-Université Pierre Mendès France - Grenoble 2 (UPMF)-Université Joseph Fourier - Grenoble 1 (UJF)-Inria Grenoble - Rhône-Alpes, Institut National de Recherche en Informatique et en Automatique (Inria)-Institut National de Recherche en Informatique et en Automatique (Inria), ANR-11-INFR-0013,SONGS,Simulation de systèmes de prochaine génération(2011), Inria Grenoble - Rhône-Alpes, Institut National de Recherche en Informatique et en Automatique (Inria)-Institut National de Recherche en Informatique et en Automatique (Inria)-Laboratoire d'Informatique de Grenoble (LIG), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National Polytechnique de Grenoble (INPG)-Centre National de la Recherche Scientifique (CNRS)-Université Pierre Mendès France - Grenoble 2 (UPMF)-Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National Polytechnique de Grenoble (INPG)-Centre National de la Recherche Scientifique (CNRS)-Université Pierre Mendès France - Grenoble 2 (UPMF)-Université Joseph Fourier - Grenoble 1 (UJF), and Université Pierre Mendès France - Grenoble 2 (UPMF)-Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National Polytechnique de Grenoble (INPG)-Centre National de la Recherche Scientifique (CNRS)-Université Pierre Mendès France - Grenoble 2 (UPMF)-Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National Polytechnique de Grenoble (INPG)-Centre National de la Recherche Scientifique (CNRS)
Subjects: 020203 distributed computing, Computer science, business.industry, media_common.quotation_subject, Distributed computing, 020206 networking & telecommunications, Context (language use), Cloud computing, 02 engineering and technology, Grid, computer.software_genre, Computer Science Applications, Lead (geology), Modeling and Simulation, Scalability, 0202 electrical engineering, electronic engineering, information engineering, Quality (business), Data mining, [INFO.INFO-DC]Computer Science [cs]/Distributed, Parallel, and Cluster Computing [cs.DC], Communications protocol, business, computer, Network model, media_common
Abstract: Researchers in the area of grid/cloud computing perform many of their experiments using simulations that must capture network behavior. In this context, packet-level simulations, which are widely used to study network protocols, are too costly given the typical large scales of simulated systems and applications. An alternative is to implement network simulations with less costly flow-level models. Several flow-level models have been proposed and implemented in grid/cloud simulators. Surprisingly, published validations of these models, if any, consist of verifications for only a few simple cases. Consequently, even when they have been used to obtain published results, the ability of these simulators to produce scientifically meaningful results is in doubt. This work evaluates these state-of-the-art flow-level network models of TCP communication via comparison to packet-level simulation. While it is straightforward to show cases in which previously proposed models lead to good results, instead we follow the critical method , which places model refutation at the center of the scientific activity, and we systematically seek cases that lead to invalid results. Careful analysis of these cases reveals fundamental flaws and also suggests improvements. One contribution of this work is that these improvements lead to a new model that, while far from being perfect, improves upon all previously proposed models in the context of simulation of grids or clouds. A more important contribution, perhaps, is provided by the pitfalls and unexpected behaviors encountered in this work, leading to a number of enlightening lessons. In particular, this work shows that model validation cannot be achieved solely by exhibiting (possibly many) “good cases.” Confidence in the quality of a model can only be strengthened through an invalidation approach that attempts to prove the model wrong.
Published: 2013

42. Gate voltage contribution to neutron-induced SEB of Trench Gate Fieldstop IGBT

Author: L. L. Foro, Paolo Rech, Antoine Touboul, C. Frost, Frédéric Saigné, Frédéric Wrobel, Luigi Dilillo, Université de Montpellier (UM), Radiations et composants (RADIAC), Institut d’Electronique et des Systèmes (IES), Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS), Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS), PgMicro - Instituto de Informática [UFRGS] (PGMICRO), Universidade Federal do Rio Grande do Sul [Porto Alegre] (UFRGS), Conception et Test de Systèmes MICroélectroniques (SysMIC), Laboratoire d'Informatique de Robotique et de Microélectronique de Montpellier (LIRMM), Centre National de la Recherche Scientifique (CNRS)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS)-Université de Montpellier (UM), ISIS Neutron and Muon Source (ISIS), STFC Rutherford Appleton Laboratory (RAL), and Science and Technology Facilities Council (STFC)-Science and Technology Facilities Council (STFC)
Subjects: Materials science, health care facilities, manpower, and services, education, Time-dependent gate oxide breakdown, 01 natural sciences, Gate oxide, 0103 physical sciences, Neutron, Trench Gate Fieldstop, Metal gate, 010302 applied physics, Gate turn-off thyristor, [PHYS]Physics [physics], Insulated Gate Bipolar Transistor (IGBT), Cross section, SEB, 010308 nuclear & particles physics, business.industry, gate damage, Electrical engineering, food and beverages, Insulated-gate bipolar transistor, [SPI.TRON]Engineering Sciences [physics]/Electronics, Current injection technique, Atmospheric neutrons, Optoelectronics, business, AND gate, SEGR
Abstract: International audience; Single Event Burnout and Gate Rupture are catastrophic failures due to cosmic rays that can be occurring simultaneously. It is shown that biased negatively the gate leads to a substantial increase of SEB cross section.
Published: 2013
Full Text: View/download PDF

43. Using electromagnetic emanations for variability characterization in Flash-based FPGAs

Author: Jimmy Tarrillo, Florent Bruguier, Lionel Torres, Morgan Bourree, Jorge Tonfat, Fernanda Lima Kastensmidt, Pascal Benoit, Ricardo Reis, Conception et Test de Systèmes MICroélectroniques (SysMIC), Laboratoire d'Informatique de Robotique et de Microélectronique de Montpellier (LIRMM), Centre National de la Recherche Scientifique (CNRS)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS)-Université de Montpellier (UM), PgMicro - Instituto de Informática [UFRGS] (PGMICRO), Universidade Federal do Rio Grande do Sul [Porto Alegre] (UFRGS), Conception et Test de Systèmes MICroélectroniques ( SysMIC ), Laboratoire d'Informatique de Robotique et de Microélectronique de Montpellier ( LIRMM ), Université de Montpellier ( UM ) -Centre National de la Recherche Scientifique ( CNRS ) -Université de Montpellier ( UM ) -Centre National de la Recherche Scientifique ( CNRS ), PgMicro - Instituto de Informática [UFRGS] ( PGMICRO ), and Universidade Federal do Rio Grande do Sul [Porto Alegre] ( UFRGS )
Subjects: Measure (data warehouse), Engineering, business.industry, Spice, Transistor, Characterization (materials science), law.invention, Electromagnetic Analysis, Flash (photography), law, Embedded system, Logic gate, Hardware_INTEGRATEDCIRCUITS, [ SPI.NANO ] Engineering Sciences [physics]/Micro and nanotechnologies/Microelectronics, Routing (electronic design automation), Variability, [SPI.NANO]Engineering Sciences [physics]/Micro and nanotechnologies/Microelectronics, business, Field-programmable gate array, Flash, FPGA, Hardware_LOGICDESIGN
Abstract: International audience; An ElectroMagnetic analysis (EMA) technique is applied to Flash-based FPGA (Field Programmable Gate Arrays) ProASIC3E to measure the delay variability. Measurements show that delay variations can reach 40% according to the mapping, placement and routing used in the FPGA array, while the synthesis tool analysis show differences lower than 7%. Comparisons between the use of EMA technique in Flash and SRAM-based FPGAs are presented. The Flash-based FPGA configurable blocks and routing structures are modeled at the electrical level. Then, SPICE simulations are performed to compare the predictive variability to the measurements ones. Results obtained with EMA can support designers on selecting different parts of the FPGA array, such as distinct mapping, placements and routing wires according to application and provide a valuable feedback for the FPGA's manufacture company.
Published: 2013
Full Text: View/download PDF

44. Visualizing More Performance Data Than What Fits on Your Screen

Author: Lucas Mello Schnorr, Arnaud Legrand, Instituto de Informática da UFRGS (UFRGS), Universidade Federal do Rio Grande do Sul [Porto Alegre] (UFRGS), Middleware efficiently scalable (MESCAL), Inria Grenoble - Rhône-Alpes, Institut National de Recherche en Informatique et en Automatique (Inria)-Institut National de Recherche en Informatique et en Automatique (Inria)-Laboratoire d'Informatique de Grenoble (LIG), Université Pierre Mendès France - Grenoble 2 (UPMF)-Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National Polytechnique de Grenoble (INPG)-Centre National de la Recherche Scientifique (CNRS)-Université Pierre Mendès France - Grenoble 2 (UPMF)-Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National Polytechnique de Grenoble (INPG)-Centre National de la Recherche Scientifique (CNRS), Cheptsov, Alexey and Brinkmann, Steffen and Gracia, José and Resch, Michael M. and Nagel, Wolfgang E., ANR-11-INFR-0013,SONGS,Simulation de systèmes de prochaine génération(2011), and Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National Polytechnique de Grenoble (INPG)-Centre National de la Recherche Scientifique (CNRS)-Université Pierre Mendès France - Grenoble 2 (UPMF)-Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National Polytechnique de Grenoble (INPG)-Centre National de la Recherche Scientifique (CNRS)-Université Pierre Mendès France - Grenoble 2 (UPMF)-Université Joseph Fourier - Grenoble 1 (UJF)
Subjects: 020203 distributed computing, Creative visualization, Spacetime, Computer science, business.industry, media_common.quotation_subject, Scale (chemistry), Control (management), 02 engineering and technology, computer.software_genre, Visualization, Data aggregator, Information visualization, 0202 electrical engineering, electronic engineering, information engineering, 020201 artificial intelligence & image processing, Data mining, [INFO.INFO-DC]Computer Science [cs]/Distributed, Parallel, and Cluster Computing [cs.DC], business, computer, media_common, TRACE (psycholinguistics)
Abstract: International audience; High performance applications are composed of many processes that are executed in large-scale systems with possibly millions of computing units. A possible way to conduct a performance analysis of such applications is to register in trace files the behavior of all processes belonging to the same application. The large number of processes and the very detailed behavior that we can record about them lead to a trace size explosion both in space and time dimensions. The performance visualization of such data is very challenging because of the quantities involved and the limited screen space available to draw them all. If the amount of data is not properly treated for visualization, the analysis may give the wrong idea about the behavior registered in the traces. This paper is twofold: first, it details data aggregation techniques that are fully configurable by the user to control the level of details in both space and time dimensions; second, it presents two visualization techniques that take advantage of the aggregated data to scale. These features are part of the Viva open-source tool and framework, which is also briefly described in this paper.
Published: 2013
Full Text: View/download PDF

45. Towards a core ontology for robotics and automation

Author: Paulo J. S. Gonçalves, Maki K. Habib, Mara Abel, Sébastien Gérard, Marcos Barreto, Edson Prestes, Sandro Rama Fiorini, Raj Madhavan, Angela Locoro, Abdelghani Chibani, Joel Luis Carbonera, Craig Schlenoff, Vitor A. M. Jorge, Yacine Amirat, Instituto de Informática da UFRGS (UFRGS), Universidade Federal do Rio Grande do Sul [Porto Alegre] (UFRGS), Dipartimento di Informatica, Bioingegneria, Robotica e Ingegneria dei Sistemi [Genova] (DIBRIS), Università degli studi di Genova = University of Genoa (UniGe), Universidade Federal da Bahia (UFBA), American University in Cairo, SIRIUS, Laboratoire Images, Signaux et Systèmes Intelligents (LISSI), Université Paris-Est Créteil Val-de-Marne - Paris 12 (UPEC UP12)-Université Paris-Est Créteil Val-de-Marne - Paris 12 (UPEC UP12), Département Ingénierie Logiciels et Systèmes (DILS), Laboratoire d'Intégration des Systèmes et des Technologies (LIST (CEA)), Direction de Recherche Technologique (CEA) (DRT (CEA)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Direction de Recherche Technologique (CEA) (DRT (CEA)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, Computer Security Division (NIST), National Institute of Standards and Technology [Gaithersburg] (NIST), Prestes, E, Carbonera, J, Rama Fiorini, S, Vitor A., M, Abel, M, Madhavan, R, Locoro, A, Goncalves, P, Marcos, E, Habib, M, Chibani, A, Gérard, S, Amirat, Y, Schlenoff, C, Department of Physics and Astronomy [Potsdam], Universität Potsdam, Laboratoire Chrono-environnement ( LCE ), Université Bourgogne Franche-Comté ( UBFC ) -Centre National de la Recherche Scientifique ( CNRS ) -Université de Franche-Comté ( UFC ), Laboratoire Images, Signaux et Systèmes Intelligents ( LISSI ), Université Paris-Est Créteil Val-de-Marne - Paris 12 ( UPEC UP12 ) -Université Paris-Est Créteil Val-de-Marne - Paris 12 ( UPEC UP12 ), Laboratoire d'étude des transferts en hydrologie et environnement, Université Joseph Fourier - Grenoble 1 ( UJF ) -Institut national des sciences de l'Univers ( INSU - CNRS ) -Observatoire des Sciences de l'Univers de Grenoble-Institut National Polytechnique de Grenoble (INPG)-Institut de recherche pour le développement IRD-Centre National de la Recherche Scientifique ( CNRS ), Universita degli studi di Genova, and Laboratoire d'Intégration des Systèmes et des Technologies (LIST)
Subjects: 0209 industrial biotechnology, Knowledge management, Knowledge representation and reasoning, Computer science, General Mathematics, Process ontology, Semantic interoperability, Ontologies for robotics and automation, 02 engineering and technology, Ontology (information science), computer.software_genre, Ontology-based standard, 020901 industrial engineering & automation, [ INFO.INFO-AU ] Computer Science [cs]/Automatic Control Engineering, 0202 electrical engineering, electronic engineering, information engineering, Upper ontology, [INFO.INFO-RB]Computer Science [cs]/Robotics [cs.RO], Mathematics (all), Ontology engineering, business.industry, Ontology-based data integration, [ INFO.INFO-RB ] Computer Science [cs]/Robotics [cs.RO], Suggested Upper Merged Ontology, Core ontology, Robotics, Computer Science Applications1707 Computer Vision and Pattern Recognition, Ontology-based standards, Knowledge representation, Computer Science Applications, Control and Systems Engineering, Ontology, Robot, 020201 artificial intelligence & image processing, Software, Artificial intelligence, Software engineering, business, Ontology alignment, computer
Abstract: International audience; In this paper, we present the current results of the newly formed IEEE-RAS Working Group, named Ontologies for Robotics and Automation. In particular, we introduce a core ontology that encompasses a set of terms commonly used in Robotics and Automation along with the methodology we have adopted. Our work uses ISO/FDIS 8373 standard developed by the ISO/TC184/SC2 Working Group as a reference. This standard defines, in natural language, some generic terms which are common in Robotics and Automation such as robot, robotic device, etc. Furthermore, we discuss the ontology development process employed along with the problems and decisions taken.
Published: 2013
Full Text: View/download PDF

46. Unified built-in self-test for fully differential analog circuits

Author: Marcelo Lubaszewski, Salvador Mir, Bernard Courtois, Techniques of Informatics and Microelectronics for integrated systems Architecture (TIMA), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA), DELET—UFRGS (DELET—UFRGS), DELET—UFRGS, Techniques de l'Informatique et de la Microélectronique pour l'Architecture des systèmes intégrés (TIMA), and Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Centre National de la Recherche Scientifique (CNRS)
Subjects: Test strategy, common-mode feedback, Computer science, System safety, 02 engineering and technology, Analog multiplier, 0202 electrical engineering, electronic engineering, information engineering, fully differential analog circuits, [SPI.NANO]Engineering Sciences [physics]/Micro and nanotechnologies/Microelectronics, Electrical and Electronic Engineering, unified BIST, unified-built-in-self-test, Digital electronics, Analogue electronics, business.industry, 020208 electrical & electronic engineering, Mixed-signal integrated circuit, test-strategy, 020202 computer hardware & architecture, Reliability engineering, maintenance-tests, Built-in self-test, on-line/off-line analog test, PACS 85.42, Embedded system, design-validation, business, Error detection and correction, analog BIST, fully-differential-analog-circuits
Abstract: Mir, S. et al., The reduction of test costs, especially in high safety systems, requires that the same test strategy is employed for design validation, manufacturing and maintenance tests, and concurrent error detection. This unification of off-line and on-line tests has already been attempted for digital circuits and it offers the advantage of serving to all phases of a system lifetime. Market pressure originating from the high costs of analog and mixed signal testing has resulted in renewed efforts for the test of analog parts. In this paper, off-line and on-line test techniques for fully differential analog circuits are presented within an unified approach. The high performance of these circuits makes them very popular for many applications, including high safety, low voltage and high speed systems. A test master compliant with IEEE Std. 1149.1 is described. The Analog Unified BIST (AUBIST) is exemplified for linear and non-linear switched-capacitor circuits. High fault coverage is achieved during concurrent/on-line testing. An off-line test ensures the goal of self-checking circuits and allows the diagnosis of faulty parts. The self-test of the AUBIST circuitry is also considered., This work is part of AMTIST ESPRIT-III Basic Research Project, funded by CEC under contract 8820.
Published: 1996
Full Text: View/download PDF

47. Influence of adhesive system on quartz fiber post dislocation resistance in endodontically treated teeth

Author: Susana Maria Werner Samuel, Luis Francisco Maglione Garcia, Stéfani Becker Rodrigues, Fabrício Mezzomo Collares, Vicente Castelo Branco Leitune, Maglione García Luis Francisco, Universidad de La República - UDELAR, Facultad de Odontología, Area of Operative Dentistry, Montevideo, Uruguay, Leitune Vicente Castelo Branco, Universidade Federal do Rio Grande do Sul - UFRGS, Department of Conservative Dentistry, Porto Alegre, RS, BrazilCorrespondence, Rodrigues Stéfani Becker, Universidade Federal do Rio Grande do Sul - UFRGS, Department of Conservative Dentistry, Porto Alegre, RS, BrazilCorrespondence, Samuel Susana Maria Werner, Universidade Federal do Rio Grande do Sul - UFRGS, Department of Conservative Dentistry, Porto Alegre, RS, BrazilCorrespondence, and Collares Fabrício Mezzomo, Universidade Federal do Rio Grande do Sul - UFRGS, Department of Conservative Dentistry, Porto Alegre, RS, BrazilCorrespondence
Subjects: Materials science, Sodium, TECNICA DE PERNO MUÑON, 0206 medical engineering, Dentistry, chemistry.chemical_element, 02 engineering and technology, 03 medical and health sciences, Tooth. Endodontically-Treated. Post and core technique. Resin cements. Dentin-Bonding agents, 0302 clinical medicine, Dentin, medicine, Dentin-Bonding Agents, Composite material, General Dentistry, Quartz, Cement, RECUBRIMIENTOS DENTINARIOS, Tooth Endodontically-Treated, business.industry, Bond strength, Post and Core Technique, DIENTE NO VITAL, RK1-715, 030206 dentistry, Adhesion, 020601 biomedical engineering, Resin Cements, medicine.anatomical_structure, Distilled water, chemistry, CEMENTOS DE RESINA, Dislocation, business
Abstract: Aim: To evaluate the dislocation resistance of the quartz fiber post/cement/dentin interface after different adhesion strategies. Methods: Forty bovine lower central incisors were selected and prepared with K-files using the step-back technique, and irrigated with 3 mL of distilled water preceding the use of each instrument. Prepared teeth were stored at 37ºC and 100% humidity for 7 days. The roots were prepared and randomized into 4 groups. The quartz fiber post was cemented with an adhesion strategy according to the following groups: GBisCem- BISCEM; GOneStep±C&B- One Step ± C&B; GAllBond±C&B- AllBond3 ± C&B; GAllBondSE±C&B- AllBondSE ±C&B with a quartz fiber post. Cross-sectional root slices of 0.7 mm were produced and stored for 24 h at 37° C before being submitted to push-out bond strength. Results: The mean and standard deviation values of dislocation resistance were GBisCem: 1.12 (± 0.23) MPa, GOneStep±C&B: 0.81 (± 0.31) MPa, GAllBond±C&B: 0.98 (± 0.14) MPa, and GAllBondSE±C&B: 1.57 (± 0.04) MPa. GAllBondSE±C&B showed significantly higher values of dislocation resistance than the other groups. Conclusions: Based on this study design, it may be concluded that adhesion strategies showed different results of quartz post dislocation resistance. Simplified adhesive system with sodium benzene sulphinate incorporation provided superior dislocation resistance.
Published: 2016
Full Text: View/download PDF

48. Dynamics of Cattle Production in Brazil

Author: Miguelangelo Gianezini, Concepta McManus, Eduardo Antunes Dias, Júlio Otávio Jardim Barcellos, Daniele Zago, Potira Meirelles Hermuche, Bruna Dináh Krummenauer Formenton, Osmar Abilio de Carvalho, Vinícius do Nascimento Lampert, José Braccini Neto, Renato Fontes Guimarães, Concepta McManus, UNB, Júlio Otávio Jardim Barcellos, UFRGS, Bruna Krummenauer Formenton, UFRGS, Potira Meirelles Hermuche, UNB, Osmar Abílio de Carvalho Junior, UNB, Renato Fontes Guimarães, UNB, Miguelangelo Gianezini, UFRGS, Eduardo Antunes Dias, UFRGS, VINICIUS DO NASCIMENTO LAMPERT, CPPSUL, Daniele Zago, UFRGS, and José Braccini Neto, UFRGS.
Subjects: 0211 other engineering and technologies, Social Sciences, lcsh:Medicine, 02 engineering and technology, Pasture, Geographical locations, Animal Products, Environmental protection, Medicine and Health Sciences, lcsh:Science, Mammals, Bovino, Multidisciplinary, geography.geographical_feature_category, Animal Behavior, Agriculture, 021107 urban & regional planning, Ruminants, 04 agricultural and veterinary sciences, Geography, Vertebrates, Livestock, Beef, Brazil, Research Article, Meat, Farms, Political Science, Public Policy, Disease cluster, Bovines, Deforestation, Animals, Production (economics), Nutrition, Behavior, Internal migration, business.industry, Brasil, lcsh:R, Organisms, 0402 animal and dairy science, Biology and Life Sciences, South America, 040201 dairy & animal science, Diet, Food, Herd, Cattle, Animal Migration, lcsh:Q, Physical geography, People and places, Produção animal, business, Zoology
Abstract: Movement of livestock production within a country or region has implications for genetics, adaptation, well-being, nutrition, and production logistics, particularly in continental-sized countries, such as Brazil. Cattle production in Brazil from 1977 to 2011 was spatialized, and the annual midpoint of production was calculated. Changes in the relative production and acceleration of production were calculated and spatialized using ARCGIS1. Cluster and canonical discriminant analyses were performed to further highlight differences between regions in terms of cattle production. The mean production point has moved from the Center of Minas Gerais State (in the southeast region) to the North of Goiás State (in the Midwest region). This reflects changes in environmental factors, such as pasture type, temperature and humidity. Acceleration in production in the northern region of Brazil has remained strong over the years. More recently, “traditional” cattle-rearing regions, such as the south and southeast, showed a reduction in growth rates as well as a reduction in herd size or internal migration over the period studied. These maps showed that this movement tends to be gradual, with few regions showing high acceleration or deceleration rates.
Published: 2016
Full Text: View/download PDF

49. Control Design for LPV Systems with Input Saturation and State Constraints: an Application to a Semi-Active Suspension

Author: Anh Lam Do, Olivier Sename, J.M. Gomes da Silva, Luc Dugard, GIPSA - Systèmes linéaires et robustesse (GIPSA-SLR), Département Automatique (GIPSA-DA), Grenoble Images Parole Signal Automatique (GIPSA-lab), Université Stendhal - Grenoble 3-Université Pierre Mendès France - Grenoble 2 (UPMF)-Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Centre National de la Recherche Scientifique (CNRS)-Université Stendhal - Grenoble 3-Université Pierre Mendès France - Grenoble 2 (UPMF)-Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Centre National de la Recherche Scientifique (CNRS)-Grenoble Images Parole Signal Automatique (GIPSA-lab), Université Stendhal - Grenoble 3-Université Pierre Mendès France - Grenoble 2 (UPMF)-Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Centre National de la Recherche Scientifique (CNRS)-Université Stendhal - Grenoble 3-Université Pierre Mendès France - Grenoble 2 (UPMF)-Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Centre National de la Recherche Scientifique (CNRS), Departamento de Engenharia Eletrica (UFRGS), and Universidade Federal do Rio Grande do Sul [Porto Alegre] (UFRGS)
Subjects: 0209 industrial biotechnology, Engineering, Mathematical optimization, business.industry, 020208 electrical & electronic engineering, Passivity, Admissible set, 02 engineering and technology, Suspension (motorcycle), Constraint (information theory), 020901 industrial engineering & automation, Control theory, [INFO.INFO-AU]Computer Science [cs]/Automatic Control Engineering, 0202 electrical engineering, electronic engineering, information engineering, Trajectory, Symmetric matrix, business, Actuator
Abstract: International audience; This paper proposes a control design strategy for LPV systems subject to additive disturbances in the presence of actuator saturation and state constraints. LMI conditions are derived in order to simultaneously compute an LPV controller and an anti-windup gain that ensures the boundedness of the trajectories, considering that the disturbances belong to a given admissible set. The disturbance attenuation is addressed via an H¥ constraint. Besides, state constraints (corresponding to the local validity of the LPV model and system structural limits) are always assured. The theoretical results are applied to a quarter-car model rewritten in the LPV framework where the passivity constraint is recast to the saturation one. The interest of the provided methodology is emphasized by simulations.
Published: 2011

50. Towards a Framework for WeavingSocial Networks Principles into Web Services Discovery

Author: Noura Faci, José Palazzo Moreira de Oliveira, Youakim Badr, Zakaria Maamar, Leandro Krug Wives, Pedro Santos, Djamal Benslimane, Service Oriented Computing (SOC), Laboratoire d'InfoRmatique en Image et Systèmes d'information (LIRIS), Institut National des Sciences Appliquées de Lyon (INSA Lyon), Université de Lyon-Institut National des Sciences Appliquées (INSA)-Université de Lyon-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-École Centrale de Lyon (ECL), Université de Lyon-Université Lumière - Lyon 2 (UL2)-Institut National des Sciences Appliquées de Lyon (INSA Lyon), Université de Lyon-Université Lumière - Lyon 2 (UL2), Laboratoire d'Informatique pour l'Entreprise et les Systèmes de Production (LIESP), Université Lumière - Lyon 2 (UL2)-École Centrale de Lyon (ECL), Université de Lyon-Université de Lyon-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Institut National des Sciences Appliquées de Lyon (INSA Lyon), Université de Lyon-Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA), Instituto de Informática da UFRGS (UFRGS), and Universidade Federal do Rio Grande do Sul [Porto Alegre] (UFRGS)
Subjects: Web standards, medicine.medical_specialty, Web development, Computer science, WS-I Basic Profile, business.industry, Services computing, 02 engineering and technology, computer.software_genre, World Wide Web, Web Services Discovery, 020204 information systems, 0202 electrical engineering, electronic engineering, information engineering, medicine, 020201 artificial intelligence & image processing, [INFO]Computer Science [cs], Web service, WS-Policy, business, computer, Web modeling
Abstract: International audience; This paper presents a framework for weaving the principles (ormetaphor) of social networks into Web services with emphasis onsupporting their discovery. Despite the regular updates of theexisting discovery techniques, the discovery of Web servicescontinues to exacerbate users due to the large number of availableWeb services on the Internet. Different needs trigger thediscovery of Web services such as developing new, value-addedcomposite services and sustaining the high availability of otherpeers. These needs reveal three types of relationships between Webservices, which are substitution, competition, and collaboration.The proposed framework includes tools that capture theserelationships into social networks so that Web services discoverycan be made smooth. Some implementation and simulation detailsare, also, discussed in this paper.
Published: 2011
Full Text: View/download PDF

Catalog

Books, media, physical & digital resources

See catalog results

Searchworks

Select search scope, currently: Articles Catalog books, media & more in Jio Institute collections Articles journal articles & other e-resources

Search

Search Constraints

Refine your results

Search Limiters

Topic

Publication Year Range

Language

Journal

Database

Publisher

246 results on '"UFRGS"'

Search Results

Catalog

Select search scope, currently: Articles

Catalog

books, media & more in Jio Institute collections

Articles

journal articles & other e-resources