583 results on '"Computer Simulation"'
Search Results
2. Energy efficiency of commercial offices by luminous retrofit
- Author
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Miranda, Debora Thome, Barreto, Douglas, Parsekian, Guilherme Aris, and Netto, Ary Rodrigues Alves
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- 2024
- Full Text
- View/download PDF
3. TECNOLOGIAS DE PROTOTIPAGEM APLICADA NA DIDÁTICA TRADICIONAL: MODELAGEM 3D E DESENHO TÉCNICO.
- Author
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Fracasso da Silva, Vinícius, dos Santos Aguilera, Letícia, Lopes Ribeiro, Juliana, Lima Corrêa, Huana, da Silva Militao, Damiano, and Monnerat Bandeira, Vinicius Carvalho
- Subjects
TECHNICAL drawing ,3-D printers ,COMPUTER simulation ,THREE-dimensional printing ,MANUFACTURING processes - Abstract
Copyright of Revista Foco (Interdisciplinary Studies Journal) is the property of Revista Foco and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2024
- Full Text
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4. APLICAÇÃO DO SOFTWARE PLANT SIMULATION COMO FERRAMENTA DE MELHORIA DE PROCESSOS EM LINHA DE RÁDIOS AUTOMOTIVO.
- Author
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Pinto dos Santos, Tatiane, de Souza Junior, Armando Araújo, and de Souza Silva, Carlos Américo
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MANUFACTURING workstations ,ASSEMBLY line methods ,RADIO lines ,INDUSTRIAL districts ,SIMULATION software - Abstract
Copyright of Brazilian Journal of Production Engineering / Revista Brasileira de Engenharia de Produção is the property of Brazilian Journal of Production Engineering and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2024
- Full Text
- View/download PDF
5. Desenvolvimento de um modelo de simulação computacional para apoiar o gerenciamento operacional dos processos de corte, transbordo e transporte da cana-de-açúcar.
- Author
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Jordão de Lucas, Paulo Italo and de Souza Rodrigues, José
- Subjects
SUGARCANE harvesting ,SUGARCANE ,KNOWLEDGE management ,DESIGN science ,COMPUTER simulation - Abstract
Copyright of Exacta is the property of Exacta - Engenharia de Producao and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2024
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6. ESTUDO TEÓRICO DA EQUAÇÃO DE SCHRODINGER PARA OSCILADORES: HARMÔNICO E ANARMÔNICOS QUÁRTICO, SÊXTUPLO E ÓCTUPLO QUÂNTICOS.
- Author
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da Silva Cruz, Vanderson, Silva Rêgo, Mateus, da Silva Carvalho, Iure, Viana Oliveira, Lucas, Teixeira Costa, Kariny Alanda, Ferreira Nunes, Nádia Alves, Melo Figueiredo, Guilherme, and Alves Pereira, Tiago
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ANHARMONIC oscillator ,QUANTUM mechanics ,ENERGY levels (Quantum mechanics) ,FINITE element method ,SCHRODINGER equation - Abstract
Copyright of Revista Foco (Interdisciplinary Studies Journal) is the property of Revista Foco and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2024
- Full Text
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7. INI-C’S SIMPLIFIED THERMAL COMFORT ASSESSMENT METHOD
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Roberta Vieira Goncalves de Souza and Helder Gattoni Medeiros
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INI-C ,EnergyPlus ,Energy efficiency in buildings ,computer simulation ,metamodel ,Architecture ,NA1-9428 ,Engineering (General). Civil engineering (General) ,TA1-2040 - Abstract
The need to implement measures to mitigate the buildings electricity consumption in the country led to the creation of the RTQ-C in 2009. Although Brazil has many naturally ventilated buildings, the RTQ-C is strongly oriented towards buildings that have air-conditioned systems. In 2021, the Brazilian Government published an improvement to the RTQ-C, renaming it to INI-C which, among other changes, presents a simplified method for evaluating the percentage of hours in thermal comfort (PHOCt) for naturally ventilated spaces. In this research the aim is to analyze the applicability and possible limitations of this method, using UFMG’s buildings located in Pampulha campus as a case study. For this purpose, the possibility of applying the method in buildings of different geometries was evaluated and the results of this method was compared with results obtained through simulation with EnergyPlus software. The 82 buildings considered of interest for the study were divided into three groups according to the applicability of the method: 1) applicable, 2) applicable with adjustments, and 3) not applicable. It was observed that 16% of the buildings belong to group 1, 61% to group 2 and 23% to group 3. If limits of cover thermal transmittance and absorbance and variation between APP are also taken into account, only 1 building would meet the limits of the metamodel (1.2%). Buildings in group 1 had their PHOCt evaluated with results ranging between 53% and 97%, and the buildings with higher occupancy densities and smaller indoor spaces tended to have worst results and those with lower thermal roof transmittance tended to have the best results. In addition, the simplified method was applied with modifications in 3 buildings from group 2 and the results were compared with computer simulations. The percentage differences in the PHOCt ranged between 2% and 6%, which was considered a satisfactory result for the simplified method, even with the necessary adjustments. For now, the new method is considered capable of promoting a general assessment of natural ventilation solutions in buildings, but for that, acceptable adjustments in its input parameters must be evaluated to expand its application
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- 2024
8. Impact of Augmented Reality Guided Toothbrushing on Oral Hygiene Parameters Among 6 – 8 Years-old Children: A Pilot Trial
- Author
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Seema Deshmukh, Adithya Mahesh, and Sreejeeta Dey
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Computer Simulation ,Toothbrushing ,Oral Hygiene ,Technology ,Dentistry ,RK1-715 - Abstract
Objective: To determine the effect of Augmented Reality (AR) - based toothbrushing on oral hygiene practices among 6-8yrs old children of Mysuru City. Material and Methods: A concurrent parallel examiner-blinded study was conducted on 6-8yrs old children. The participants were divided into two groups: a) the Conventional brushing group and b) the AR-assisted brushing group. Oral hygiene parameters were assessed at the baseline. The conventional group was given a manual toothbrush. The AR-assisted group received a Colgate Magik toothbrush. Both groups were followed up for two weeks. The acceptance of using AR-assisted brushing was recorded via feedback. The pre-post comparison within the group was carried out using a paired t-test. Results: An improvement in oral hygiene status with a significant reduction in the AR-assisted brushing group (p
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- 2024
9. ANÁLISE E MODELAGEM COMPUTACIONAL DO PROCESSO DE MANUFATURA DE FITAS ADESIVAS EM UMA EMPRESA DO POLO INDUSTRIAL DE MANAUS: UMA APLICAÇÃO NO SOFTWARE FLEXSIM®.
- Author
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Batista Leal, Leandra Karolina, Wanderley Ribeiro, Lucas, Pereira da Silva, Jeniffer Andrielle, Martins Lucas, Átila, Barros de Oliveira, Francisco Assis, and Sena de Almeida, Ely
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DISCRETE event simulation ,FREE ports & zones ,MANUFACTURING processes ,DESTOCKING ,DIGITAL computer simulation - Abstract
Copyright of Exacta is the property of Exacta - Engenharia de Producao and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2024
- Full Text
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10. Aplicativo móvel para a triagem e gestão do Transtorno de Espectro Autista na Atenção Primária.
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Gondim Mendonça, Andrea, Porpino Maia Garcia, Camila, da Cunha Aragão Rios Fagundes, Adriane, Souto Silva, CleytonCézar, Balduíno de Araújo, Yana, and Leite da Silva Pereira, Vagna Cristina
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DIAGNOSIS of autism ,TREATMENT of autism ,RESEARCH ,COMPUTER software ,COMPUTER simulation ,HTML (Document markup language) ,MOBILE apps ,POCKET computers ,SMARTPHONES ,SOFTWARE architecture ,PRIMARY health care ,JAVA programming language ,ALTERNATIVE medicine ,PROGRAMMING languages - Abstract
Copyright of Saúde Coletiva is the property of MPM Comunicacao and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2023
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11. A TECNOLOGIA E SEUS BENEFÍCIOS NO DESENVOLVIMENTO DOS PROCESSOS: O USO DE SOFTAWARE DE SIMULAÇÃO NUMÉRICA NO SETOR DE FUNDIÇÃO DE UMA GRANDE EMPRESA AGROINDUSTRIAL.
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Moreira, Leandro Gabriel, Garcia Hermosilla, José Luis, and Scarduelli Pacheco, Bruna Cristine
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3-D printers ,MANUFACTURING processes ,THREE-dimensional printing ,PRODUCT quality ,COMPUTER simulation - Abstract
Copyright of Revista Foco (Interdisciplinary Studies Journal) is the property of Revista Foco and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2023
- Full Text
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12. Por que a base de uma mola Slinky em queda fica em repouso?
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Rodrigues de Melo, Matheus and Peixoto, Paulo
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LITERATURE reviews , *COMPUTER simulation , *LEVITATION , *GRAVITY , *SIMULATION methods & models - Abstract
In this paper, we analyze the motion of a falling Slinky, starting from rest and initially suspended from one of its ends. It is well-known that under these conditions, the Slinky moves in an unusual way: its lower end remains at rest until the upper end collides with it - as if gravity were being challenged! We conducted a literature review and identified that the most widely disseminated explanation for this levitation phenomenon of the Slinky's base during the Slinky's fall relies on the concept of information (and does not seem to please many). We show that such a phenomenon can be explained - and reproduced through a computer simulation using a simple model - without the notion that "there is a finite time for the information that the Slinky was released at its top to reach its bottom". [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
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13. Caos determinístico: uma abordagem com o software Insight Maker focada em discussões sobre determinismo e previsibilidade.
- Author
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Weber, Rodrigo, Albuquerque Heidemann, Leonardo, and Simões de Sá Martins, Jorge
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SCIENTIFIC knowledge , *PHILOSOPHY of science , *TEACHER training courses , *SCIENCE education , *EQUATIONS of motion , *PENDULUMS - Abstract
Demonstrating the existence of events that are hypersensitive to initial conditions, non-linear dynamics shook the bases of philosophy of Science, mainly in what refers to the predictive power of scientific knowledge. In educational context, however, deterministic chaos continues to be little explored, even in undergraduate courses, despite its potential to favor the learning of both scientific knowledge and central elements of philosophy of science. Proposing an alternative approach to the subject in teacher training courses, this article presents a didactic approach for teaching nonlinear dynamics using an online and open source application called Insight Maker, which allows the solving of differential equations by numerical integration and automated generation of graphs, requiring little programming knowledge. We discuss the notions of causality, determinism and predictability by analyzing two theoretical models of pendulums: the simple pendulum and the forced damped one. In the first situation, numerical integration of the equations of motion in Insight Maker shows that the phenomenon is, in principle, predictable, since its solutions have little sensitivity to small variations in the imposed initial conditions. The same did not occur with the forced damped pendulum. Using the same tool, we show that this phenomenon can present chaotic behavior due to variations in a system parameter. This was done both by applying a sensitivity test considering variations in the initial conditions and the indirect calculation of the Lyapunov exponent. We showed the so-called "islands of order" and highlighted the route to chaos via the period doubling cascade, conceptually exposing the role of the Feigenbaum number in nonlinear systems. [ABSTRACT FROM AUTHOR]
- Published
- 2023
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- View/download PDF
14. APLICAÇÃO DE SMED COM SUPORTE SE SIMULAÇÃO COMPUTACIONAL PARA REDUÇÃO DE TEMPO DE SETUP DE UMA MÁQUINA REBOBINADEIRA.
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de Melo Freire, Vitória, dos Santos Gil, Gabrielly, Pereira Nery, Cibelle Lima, Albuquerque Oliveira, Marcelo, and de Mattos Veroneze, Gabriela
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SETUP time ,PRODUCTION engineering ,SIMULATION software ,COMPUTER simulation ,SIMULATION methods & models - Abstract
Copyright of Revista Producao Online is the property of Associacao Brasileira de Engenharia de Producao and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2023
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15. Efeito das interações dos Estudantes de Ciências com Laboratórios Virtuais em Realidade Aumentada para o Desenvolvimento da Visualização Espacial / Effect of Science Students Interactions with Augmented Reality Virtual Labs for Spatial Visualization Development
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Fabrício Herpich, Patrícia Fernanda da Silva, and Liane Margarida Rockenbach Tarouco
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realidade aumentada ,habilidade espacial ,simulação de computador ,visualização ,educação científica ,augmented reality ,spatial ability ,computer simulation ,visualization ,science education ,Education ,Education (General) ,L7-991 ,Special aspects of education ,LC8-6691 - Abstract
Este artigo tem como principal escopo evidenciar o potencial das interações de estudantes no ensino de Ciências, a partir de recursos educacionais em realidade aumentada e o seu efeito para o desenvolvimento da habilidade de visualização espacial. Para tanto, apresenta uma contextualização sobre o ensino de Ciências, a utilização de laboratórios reais, bem como as suas limitações, apresentando como alternativa o uso de recursos educacionais em realidade aumentada com o apoio de dispositivos móveis. A solução foi testada em atividades complementares ao processo de ensino e aprendizagem de Ciências com alunos de Educação Básica no Brasil. Teve como objetivo investigar se as interações dos estudantes com os recursos educacionais em realidade aumentada podem contribuir para o desenvolvimento da habilidade de visualização espacial. Os procedimentos metodológicos foram organizados em uma abordagem quasi-experimental, através de atividades previstas em um protocolo de testes executados com 208 participantes distribuídos em dois grupos: Controle (n=96 sujeitos) e Experimental (n=112 sujeitos). Em linhas gerais, os resultados desta pesquisa apontam para contribuições decorrentes das interações dos estudantes com os recursos educacionais em realidade aumentada, tanto para o desenvolvimento da habilidade de visualização espacial, como também para a observação do fenômeno e compreensão dos conceitos abstratos a ele associados, formulação e testagem de hipóteses, assim como conclusões a partir das situações experienciadas. /// The main scope of this article is to highlight the potential of student interactions in Science teaching, from educational resources in augmented reality, and its effect on the development of spatial visualization skills. Therefore, it presents a contextualization about Science teaching, the use of real laboratories, as well as its limitations, presenting as an alternative the use of educational resources in augmented reality with the support of mobile devices. The solution was tested in activities that complement the Science teaching and learning process with basic education students in Brazil. It aimed to investigate whether students' interactions with educational resources in augmented reality can contribute to the development of spatial visualization skills. The methodological procedures were organized in a quasi-experimental approach, through activities foreseen in a test protocol carried out with 208 participants divided into two groups: Control (n=96 subjects) and Experimental (n=112 subjects). In general terms, the results of this research point to contributions arising from the interactions of students with educational resources in augmented reality, both for the development of spatial visualization skills, as well as for the observation of the phenomenon and understanding of the abstract concepts associated with it, formulation and testing of hypotheses, as well as conclusions from the situations experienced.
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- 2021
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16. CFD AND TEST OF SINGLE SIDE GANTRY BOOM SPRAYER FOR APPLE ORCHARDS
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Peng Huo, Jianping Li, Pengfei Wang, Yongliang Bian, and Chunlin Xue
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Profiling spray ,Computer simulation ,Sprayer ,RSM ,Vertical droplet distribution test ,Agriculture (General) ,S1-972 - Abstract
ABSTRACT Aiming at addressing the uneven pesticide distribution when spraying high-spindle apple trees, the parameters of a homemade profiling boom sprayer were analysed, and the optimal parameter combinations of the profiling sprayer were determined. Fluent was used to simulate the spray for various parameter values. The goodness of fit (R2) with experimentally measured data was 0.9270, which verified the accuracy of the numerical simulations. The response surface methodology (RSM) method was used to obtain optimal parameter values from the simulations, and the effective collection rate and spray distribution coefficient of variation were introduced as response values. A sprayer prototype was manufactured based on the optimal parameters determined by RSM analysis, and the results were verified by vertical droplet distribution tests. The results showed that the spray quality increased by 0.7%, 0.9%, and 0.3% for the three best parameters combinations, the droplet distribution was more uniform, and the effect of the profiling spray was better than that of the control tests. The results can provide guidance for the design of sprayers for orchards, and the optimal combination of parameters can provide a basis for subsequent research on precision modelling of profile spraying.
- Published
- 2021
- Full Text
- View/download PDF
17. Virtual simulations for health education: how are user skills assessed?
- Author
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José Raul de Brito Andrade, Liliane dos Santos Machado, Leonardo Wanderley Lopes, and Ronei Marcos de Moraes
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Health Education ,Simulation Training ,Educational Measurement ,Computer Simulation ,Education (General) ,L7-991 ,Medicine (General) ,R5-920 - Abstract
Abstract: Introduction: A virtual simulator, or one based on virtual reality, can computationally recreate real contexts. Objective: To analyze works on virtual simulations for training clinical procedures, focusing on the assessment of user skills. Method: Integrative literature review, carried out between 2010 and 2020. A total of 56 studies were selected 56 studies. Results: The selected studies showed that the variables and parameters of virtual simulators are usually obtained by consulting experts or through medical literature. These simulators mainly focus on developing psychomotor skills and assessing the learner’s performance through real-time alerts, progress indicators, and performance reports after the end of each training. Conclusion: Considering the expert’s knowledge exclusively to define the requirements of virtual simulators can limit their reliability and accuracy. The participation of experts in these projects does not follow standards regarding the selection and frequency with which they collaborate. Few simulators provide insightful and pertinent feedback on user performance.
- Published
- 2022
- Full Text
- View/download PDF
18. USO DA SIMULAÇÃO COMPUTACIONAL PARA AVALIAÇÃO DE MELHORIAS EM UMA INDÚSTRIA MOVELEIRA.
- Author
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Junior Slaviero, Gilmar and Dagnino Chiwiacowsky, Leonardo
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WORK in process ,FURNITURE industry ,MANUFACTURING processes ,LEAD time (Supply chain management) ,COMPUTER simulation - Abstract
Copyright of Revista Foco (Interdisciplinary Studies Journal) is the property of Revista Foco and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2022
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19. Nephrology and experimental medicine in vivo, in vitro, and in silico.
- Author
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Younes-Ibrahim M
- Subjects
- Humans, Biomedical Research, In Vitro Techniques, Animals, Nephrology, Computer Simulation
- Abstract
Experimental medicine has formed the basis for generating medical knowledge for several centuries. The development of various experimental tools introduced at different times in medical practice has allowed the acquisition of knowledge with increasingly sophisticated scientific bases. Consequently, through in vivo, in vitro and, more recently, in silico experiments, we have witnessed an uninterrupted collection of experimental data potentially valuable for medicine, especially for Nephrology. We are gradually contemplating the uniqueness of individuals for the benefit of life and human dignity.
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- 2024
- Full Text
- View/download PDF
20. Influência do Tamanho da Malha em Simulações Numéricas Via Elementos Finitos.
- Author
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Nascimento Arroyo, Felipe, Rocco Lahr, Francisco Antônio, and Luis Christoforo, André
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RESEARCH institutes , *COMPUTER simulation , *SCARCITY - Abstract
New structural systems in civil construction are always emerging, and therefore a performance evaluation is necessary. For this evaluation, laboratory tests are necessary, but, due to the scarcity of research centers, numerical simulations have emerged as an alternative. For better reliability in the results obtained in the simulation, a mesh test is necessary, verifying the influence of the results. In this paper, the analysis of are two main types of mesh (tetrahedral and hexahedral) and several possible discretization sizes, aiming to evaluate the parameters in a numerical simulation of a specimen requested with 3-point static bending. Two mesh types and three sizes (1mm, 5mm and 10mm) were adopted. Through the obtained results, it can be reached that the tetrahedral mesh obtained better results. It was also possible to achieve that the mesh size did not change the results of stresses and displacements in the contour of the part, only influencing the results of stresses in the interior. [ABSTRACT FROM AUTHOR]
- Published
- 2022
- Full Text
- View/download PDF
21. SIMULAÇÃO BASEADA EM DINAMICA DE SISTEMAS: AVALIAÇÃO DE CENÁRIOS EM UMA ASSOCIAÇÃO DE RECICLAGEM.
- Author
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de Campos Junges, Vanessa, Matos Romio, Alexsandra, de Oliveira Simonetto, Eugênio, Alves Pacheco de Campos, Simone, and Bobsin, Débora
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SOLID waste ,SYSTEM dynamics ,COMPUTER simulation ,MODEL validation ,SIMULATION methods & models - Abstract
Copyright of Exacta is the property of Exacta - Engenharia de Producao and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2022
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22. Simulação de sistemas com agentes autônomos -- Modelo de Sznajd como exemplo ilustrativo.
- Author
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Julião, Cícero and de Albuquerque, Samuel S.
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ISING model , *COMPUTER simulation , *STUDENT interests - Abstract
In addition to analytical and experimental techniques of natural systems, computer simulations are a powerful tool for discovery, analysis and description in scientific research. Simulations with autonomous agents are especially useful when we have microscopic and macroscopically specific ones. The Sznajd Model is a good start for students and researchers interested in using these approaches. [ABSTRACT FROM AUTHOR]
- Published
- 2022
- Full Text
- View/download PDF
23. Método estrutural para aferir o curso pandêmico do SARS-CoV-2 em ambientes escolares.
- Author
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Salej Higgins, Silvio, Hinojosa Luna, Adrian, Pinto Rabelo, Andreia Maria, dos Santos, Reinaldo Onofre, and Cardoso Ferreira, Vanessa
- Subjects
- *
SOCIAL contact , *AGE groups , *POISSON distribution , *SOCIAL interaction , *RANDOM graphs - Abstract
The COVID-19 pandemic has imposed several dilemmas for managers in the public sector, with school reopening being among the most complex decisions. The present article presents a microsimulation model of the pandemic course considering various scenarios within the confines of a classroom in the city of Belo Horizonte, Brazil. For that, a susceptible-infectious-recovered (SIR) model was integrated with a random graph model, associating epidemiological characteristics with sociometric and sociodemographic factors. Social contact rates projected for Brazil in the European POLYMOD project were adapted for the city of Belo Horizonte to simulate the number of contacts among individuals considering a Poisson distribution. The simulation used as reference a group of 20 students and their families. The projected scenarios discriminated three age groups with their respective rate of daily social contacts: 0 to 5 years (0.01), 6 a 14 years (1.80), and 15 to 19 years (0.20). The simulations showed clear differences between these age groups, depending on the initial number of infected individuals and on the use or not of face masks in the school. The results confirm that the absence of adequate mitigation measures entails a considerable increase in transmission in the school setting. [ABSTRACT FROM AUTHOR]
- Published
- 2022
- Full Text
- View/download PDF
24. AS CONDIÇÕES AMBIENTAIS DO EDIFÍCIO VILANOVA ARTIGAS, SEDE DA FAUUSP EM SÃO PAULO: ESTUDOS ANALÍTICOS.
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Soares Gonçalves, Joana Carla, Consentino Kronka Mülfarth, Roberta, Loureiro Xavier Nascimento Michalski, Ranny, Rodrigues Prata Shimomura, Alessandra, de Andrade Roméro, Marcelo, Mitiko Sato Furuyama, Cristiane, Klemke Costa Pinho, Johnny, Gasparelo Lima, Eduardo, Ferrara Carunchio, Claudia, Tavares Segovia, Sylvia, and dos Santos, Karen Daiane
- Abstract
Copyright of PARC Pesquisa em Arquitetura e Construção is the property of Universidade Estadual de Campinas - Portal de Periodicos Eletronicos Cientificos and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2022
- Full Text
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25. Mudanças na dinâmica de uma liga acadêmica em tempos de COVID-19: um relato de experiência.
- Author
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Barreto Gomes, Gabriela Malaquias, de Oliveira Andrade, Ana Beatriz, Melo Targino, Larissa, Muti Carvalho, Fernando, Silva Silveira, Beatriz, and de Souza Mendes Junior, Epaminondas
- Subjects
COMPUTER simulation ,TEACHING methods ,LEARNING strategies ,ABILITY ,TRAINING ,COVID-19 pandemic ,MEDICAL education ,GOAL (Psychology) - Abstract
Copyright of International Journal of Education & Health (IJEH) / Revista Internacional de Educação e Saúde is the property of Revista Internacional de Educacao e Saude and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2022
- Full Text
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26. UTILIZAÇÃO DA SIMULAÇÃO COMPUTACIONAL POR EVENTOS DISCRETOS E OTIMIZAÇÃO PARA A PROGRAMAÇÃO DA PRODUÇÃO EM UMA EMPRESA DA INDÚSTRIA DE PLÁSTICOS.
- Author
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Piacentini, Cristina Fabbris, Gauss, Leandro, Wolf Motta Morandi, Maria Isabel, and Lacerda, Daniel Pacheco
- Subjects
DISCRETE event simulation ,COST control ,WORK in process ,DECISION making ,PRODUCTION scheduling - Abstract
Copyright of Revista Producao Online is the property of Associacao Brasileira de Engenharia de Producao and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2022
27. SIMULAÇÃO E OTIMIZAÇÃO DE UM CALL CENTER RECEPTIVO EM UMA EMPRESA DO RAMO DE TECNOLOGIA DA INFORMAÇÃO (TI).
- Author
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de Alencastro Becker, Rodrigo, Sartori Piran, Fabio, and da da Silva, Leandra
- Subjects
BUSINESS enterprises ,INFORMATION technology ,CALL centers ,COMPUTER simulation ,QUALITY standards ,SIMULATION methods & models - Abstract
Copyright of Revista Producao Online is the property of Associacao Brasileira de Engenharia de Producao and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2022
28. Modeling and Computer Simulation of Viscoelastic Crypt Deformation
- Author
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E. P. Oliveira and G. Romanazzi
- Subjects
Colorectal cancer ,Crypts ,Finite Element Method ,Computer simulation ,Mathematics ,QA1-939 - Abstract
Colorectal cancer morphogenesis begins at the cellular level from cell mutations in the intestinal epithelium cavities called crypts. These mutations lead to a pressure difference in the epithelium crypt walls, which causes deformation and generates visible abnormalities in the epithelium. The geometrical modeling of these crypts and the mathematical modeling of the physical process that cause the deformations can be simulated by using a Finite Element Method. The method solves numerically the system of PDE equations that governs this phenomenon and permits to estimate the deformations of the crypt walls. We simulate in this work the crypt deformation when the cell mutations appear in several regions of the crypt epithelium.
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- 2022
- Full Text
- View/download PDF
29. Mortality associated with alternative policy options for primary care and the Mais Médicos (More Doctors) Program in Brazil: forecasting future scenarios
- Author
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Gabriel Vivas Francesconi, Renato Tasca, Sanjay Basu, Thiago Augusto Hernandes Rocha, and Davide Rasella
- Subjects
program evaluation ,primary health care ,computer simulation ,mortality ,brazil ,Medicine ,Arctic medicine. Tropical medicine ,RC955-962 ,Public aspects of medicine ,RA1-1270 - Abstract
Objective. To forecast the impact of alternative scenarios of coverage changes in Brazil’s Family Health Strategy (Estratégia Saúde da Família) (ESF)—due to fiscal austerity measures and to the end of the Mais Médicos (More Doctors) Program (PMM)—on overall under-5 mortality rates (U5MRs) and under-70 mortality rates (U70MRs) from ambulatory care sensitive conditions (ACSCs) up through 2030. Methods. A synthetic cohort of 5 507 Brazilian municipalities was created for the period 2017-2030. A municipal-level microsimulation model was developed and validated using longitudinal data. Reductions in ESF coverage, and its effects on U5MRs and U70MRs from ACSCs, were forecast based on two probable austerity scenarios, as compared to the maintenance of current ESF coverage. Fixed effects longitudinal regression models were employed to account for secular trends, demographic and socioeconomic changes, variables related to health care, and program duration effects. Results. In comparison to maintaining stable ESF coverage, with the decrease in ESF coverage due to austerity measures and PMM termination, the mean U5MR and U70MR would be 13.2% and 8.6% higher, respectively, in 2030. The end of PMM would be responsible for a mean U5MR from ACSCs that is 4.3% higher and a U70MR from ACSCs that is 2.8% higher in 2030. The reduction of PMM coverage due only to the withdrawal of Cuban doctors who have been working in PMM would alone be responsible for a U5MR that is 3.2% higher, and a U70MR that is 2.0% higher in 2030. Conclusions. Reductions in primary health care coverage due to austerity measures and the end of the PMM could be responsible for many avoidable adult and child deaths in coming years in Brazil.
- Published
- 2020
- Full Text
- View/download PDF
30. A simple Simulink® model of a conductivity system for exploring the performance of a Smith’s predictor
- Author
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Juan José Giner-Sanz, Montserrat García-Gabaldón, Emma María Ortega, and Valentín Pérez-Herranz
- Subjects
computer simulation ,conductivity control ,pid controller ,process control ,simulink® ,smith predictor ,Education (General) ,L7-991 - Abstract
In this work, a simple Simulink® model of a conductivity control system, based on a Smith’s predictor, is presented. This model has three main didactic outcomes. First, it allows to show to the students how a computational tool can be used to solve problems that would require a fair amount of work if they were solved analytically. Second, it allows to present an example of advanced controller: the Smith’s predictor. Finally, using this model, students can “play” with the system in order to study the effect of the different system and controller parameters on the performance of the controlled system.
- Published
- 2020
- Full Text
- View/download PDF
31. COMPUTER SIMULATIONS IN METAPHYSICS: POSSIBILITIES AND LIMITATIONS
- Author
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BILLY WHEELER
- Subjects
Computer modeling ,Computer simulation ,Methods in metaphysics ,Humean Supervenience ,Nomic Necessity ,Logic ,BC1-199 ,Philosophy (General) ,B1-5802 - Abstract
Abstract Computer models and simulations have provided enormous benefits to researchers in the natural and social sciences, as well as many areas of philosophy. However, to date, there has been little attempt to use computer models in the development and evaluation of metaphysical theories. This is a shame, as there are good reasons for believing that metaphysics could benefit just as much from this practice as other disciplines. In this paper I assess the possibilities and limitations of using computer models in metaphysics. I outline the way in which different kinds of model could be useful for different areas of metaphysics, and I illustrate in more detail how agent-based models specifically could be used to model two well-known theories of laws: David Lewis’s "Best System Account" and David Armstrong's "Nomic Necessitation" view. Some logically possible processes cannot be simulated on a standard computing device. I finish by assessing how much of a threat this is to the prospect of metaphysical modeling in general.
- Published
- 2019
- Full Text
- View/download PDF
32. Alternative approaches to analyzing ventilator-free days, mortality and duration of ventilation in critical care research.
- Author
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Serpa Neto A, Bailey M, Shehabi Y, Hodgson CL, and Bellomo R
- Subjects
- Humans, Logistic Models, Time Factors, Computer Simulation, Ventilator Weaning methods, Critical Care methods, Respiration, Artificial mortality
- Abstract
Objective: To discuss the strengths and limitations of ventilator-free days and to provide a comprehensive discussion of the different analytic methods for analyzing and interpreting this outcome., Methods: Using simulations, the power of different analytical methods was assessed, namely: quantile (median) regression, cumulative logistic regression, generalized pairwise comparison, conditional approach and truncated approach. Overall, 3,000 simulations of a two-arm trial with n = 300 per arm were computed using a two-sided alternative hypothesis and a type I error rate of α = 0.05., Results: When considering power, median regression did not perform well in studies where the treatment effect was mainly driven by mortality. Median regression performed better in situations with a weak effect on mortality but a strong effect on duration, duration only, and moderate mortality and duration. Cumulative logistic regression was found to produce similar power to the Wilcoxon rank-sum test across all scenarios, being the best strategy for the scenarios of moderate mortality and duration, weak mortality and strong duration, and duration only., Conclusion: In this study, we describe the relative power of new methods for analyzing ventilator-free days in critical care research. Our data provide validation and guidance for the use of the cumulative logistic model, median regression, generalized pairwise comparisons, and the conditional and truncated approach in specific scenarios.
- Published
- 2024
- Full Text
- View/download PDF
33. ANÁLISE DA OTIMIZAÇÃO SIMPLIFICADA DE UMA EDIFICAÇÃO RESIDENCIAL.
- Author
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Carvalho Rodrigues, Thaisa, Fagondes Aires, Kelly, Guisso Gonzaga, Maria Augusta, Knop, Stifany, Kellermann Schramm, Fabio, and Grala Da Cunha, Eduardo
- Subjects
NATURAL ventilation ,THERMAL insulation ,RESIDENTIAL areas ,COMPUTER simulation ,GEOGRAPHIC boundaries - Abstract
Copyright of Pixo: Revista de Arquitetura Cidade e Contemporaneidade is the property of Pixo Revista de Arquitetura Cidade e Contemporaneidade and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2021
- Full Text
- View/download PDF
34. APLICAÇÃO DA TEORIA DAS RESTRIÇÕES (TOC) EM UMA CÉLULA DE PRODUÇÃO UTILIZANDO SOFTWARE DE SIMULAÇÃO.
- Author
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dos Santos Ceccagno, Cristian, Hoose, Anderson, and Scheidmandel, Nilo Alberto
- Subjects
- *
AGRICULTURAL equipment industry , *THEORY of constraints , *AGRICULTURAL productivity , *MANUFACTURING cells , *DESTOCKING , *BOTTLENECKS (Manufacturing) - Abstract
The competition of companies for market share has confronted manufacturing environments with several problems that end up limiting their earnings. In this sense, this work aims to apply the Theory of Constraints in a manufacturing cell using simulation software. The work was carried out in a company in the region that operates in the industrial sector. The work methodology has a quantitative design, with the object of study in a production cell of an agricultural machinery and implements industry, which was intentionally chosen due to the high rate of delivery delays. The computer simulation tool was used to predict bottlenecks within the manufacturing environment, through the application of the five steps of the Theory of Constraints. With the correct insertion of data in the software, indicators were found that enabled the analysis of various scenarios. Among them, the main highlight was the beginning of meeting monthly demand, the reduction in operating costs, the 88.24% reduction in inventory volume, and the 55.51% increase in the production capacity of the initial bottleneck. [ABSTRACT FROM AUTHOR]
- Published
- 2021
35. SIMULAÇÃO DISCRETA APLICADA À GESTÃO DE FILAS NO VAREJO.
- Author
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Galileu de Moraes, Diego and Maniçoba da Silva, Adriano
- Subjects
DISCRETE event simulation ,QUALITY of service ,DECISION making ,COMPUTER simulation ,SIMULATION methods & models - Abstract
Copyright of Exacta is the property of Exacta - Engenharia de Producao and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2021
- Full Text
- View/download PDF
36. OSCE 3D: a virtual clinical skills assessment tool for coronavirus pandemic times
- Author
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Alexandre Loureiro Faria, Anne Carolinne Bezerra Perdigão, Edgar Marçal, Marcos Kubrusly, Raquel Autran Coelho Peixoto, and Arnaldo Aires Peixoto Junior
- Subjects
Computer Simulation ,Teaching ,Assessment ,Virtual Reality ,Coronavirus Infections ,Pandemics ,Education (General) ,L7-991 ,Medicine (General) ,R5-920 - Abstract
Abstract: Introduction: In pandemic times, in which the “lockdown strategy” has been adopted, the use of innovations using technological resources such as the creation of instruments that can replace traditional teaching-learning methods in the training of health professionals is essential. Objective: the aim of this study was to develop and evaluate the usability of a realistic interactive simulation computer system using three-dimensional imaging technology and virtual reality with free-access computational tools available on the web. Methods: the development of a prototype (OSCE 3D) was based on the steps used for the construction of a “Serious Game” simulation software. The free-access version of the Unity Editor 3D platform (Unity Technologies, version 2018), used for developing educational games, the software GNU Image Manipulation Program (GIMP, version 2.10.12), Blender (version 2.79) and MakeHuman (version 1.1.1) were utilized for creating textures and building models of the 3D environments. An experimental phase was carried out to assess usability, through a questionnaire based on the System Usability Scale. The study was approved by the Research Ethics Committee of the institution and all participants signed the Informed Consent Form. Results: a total of 39 undergraduate medical students attending the 6th semester of a private university center of northeastern Brazil voluntarily participated in the evaluation of the OSCE 3D. The usability evaluation resulted in a mean score of 75.4 with a margin of error of 3.2, which is considered a good usability score according to the literature. Conclusions: this study allowed the development of a low-cost prototype, using a three-dimension realistic simulation system for clinical skills assessment. This product, even in the prototype phase, showed good usability.
- Published
- 2021
- Full Text
- View/download PDF
37. NOVOS DESAFIOS DA EXTENSÃO UNIVERSITÁRIA EM TEMPOS DE COVID: Assistência técnica em assentamentos precários.
- Author
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Parlato, Sara, Helena dos Santos, Luana, and Saffer Medvedovski, Nirce
- Subjects
COVID-19 pandemic ,TECHNICAL assistance ,CITIES & towns ,COMPUTER simulation ,GEOTHERMAL ecology - Abstract
Copyright of Pixo: Revista de Arquitetura Cidade e Contemporaneidade is the property of Pixo Revista de Arquitetura Cidade e Contemporaneidade and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2021
38. AVALIAÇÃO FUNCIONAL E DE CONFORTO TÉRMICO EM EDIFÍCIOS VERTICAIS EM BLUMENAU SC.
- Author
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KUBA, J. C., BOGO, A. J., and VIEIRA, M.
- Subjects
- *
THERMAL comfort , *DWELLINGS , *COMPUTER simulation , *PERFORMANCE theory , *NEIGHBORHOODS - Abstract
O This paper presents the architectural characterization of the vertical housing typology in Blumenau diagnosed and evaluated the different typologies of buildings for residential use in Blumenau, their functional approaches and thermal comfort. The work method involved the stages of on-site visits, field survey and project data, post-project analysis and specific analyzes. The analysis of the vertical housing architectural typology was performed in a thirty-four buildings sample in the Victor Konder area neighborhood, in Blumenau, which is in a process of great verticalization. The evaluation identified bigger deficiencies in the functional evaluation criteria if compared to thermal comfort criteria of the buildings. From the total sample, none of the buildings reached the maximum value in the performed evaluation if considering the criteria of thermal comfort and functionality. In the thermal comfort evaluation part, a computer simulation of the thermal performance of a building in the study sample, representative of the evaluated buildings, was performed. [ABSTRACT FROM AUTHOR]
- Published
- 2021
- Full Text
- View/download PDF
39. PANDEMIA POR SARS-COV-2: UN MODELO MATEMÁTICO.
- Author
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Rinauto, Natalia, Pedro Lara, Luis, and Rodrigué, Luisa
- Subjects
- *
COVID-19 , *INFECTIOUS disease transmission , *PANDEMICS , *COMPUTER simulation , *MATHEMATICAL models , *AUTONOMOUS differential equations - Abstract
As a result of the pandemic, scientists from many countries joined forces to study the behavior of the virus and predict the evolution of the pandemic. Through Industrial Dynamics, we propose a mathematical model to study the spread of the COVID-19 disease, which occurred in Rosario, Argentina. Therefore, this presentation is intended to be a training tool to analyze the dynamics of the pandemic. We study the stability of the model and reduce the problem to a first-order autonomous differential equation. We establish a strategy to determine the parameters of the system. The numerical simulations reproduce the experimental data with reasonable precision, which validates the model and makes it possible to predict the dynamics of the infection considering various health measures. [ABSTRACT FROM AUTHOR]
- Published
- 2021
40. Movimento Vertical de Minifoguetes: Equações de Trajetórias e Análises Gráficas.
- Author
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Alves, André Luíz, Souza Bento, Sérgio, and Marchi, Carlos Henrique
- Subjects
- *
EQUATIONS of motion , *WASTE gases , *DIFFERENTIAL equations , *ALTITUDES , *INTERNAL combustion engines , *DRAG force - Abstract
This work describes the differential equations of motion and the respective solutions for speed v(t) and altitude y(t) as a function of time, relative to a rocket that follows a vertical trajectory in an upward motion were described. Four models are considered: in the first, the drag force of the air is neglected; in the second it is considered a linear drag force with speed; in the third and fourth models it is considered that the drag force is proportional to the square of the speed. The third model is distinguished by considering the total mass of a rocket constant. In the fourth model, a complete solution is presented, considering that the mass decreases linearly with time. To test these models, the experimental flight of the Epsilon-8 model rocket from the UFPR Carl Sagan Rocket Group was used. Experimental parameters related to the thrust curve as a function of the Epsilon-8 time (static test) were used, in which from the model rocket mass variation rate it was possible to obtain the rate of exhaust of the gases expelled in the engine. The third and fourth models, since they are more realistic, were used to adjust the experimental curve for v(t) and y(t). The third model, although it has an approximate solution, proves to be reasonable in the prediction of the peak, with an error of 8.6%. The fourth model, being the most complete, predicts the peak with an error of only 1.5% precisely in the time of the experimental peak. [ABSTRACT FROM AUTHOR]
- Published
- 2021
- Full Text
- View/download PDF
41. ANÁLISE DO MÉTODO DE AVALIAÇÃO TÉRMICA DOS PROJETOS DE PRÉ-ESCOLAS DO PROGRAMA PROINFÂNCIA.
- Author
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Sartori, Gabriela, Pinto da Silva Filho, Luiz Carlos, and Ayres Torres, Maurício Carvalho
- Abstract
Copyright of PARC Pesquisa em Arquitetura e Construção is the property of Universidade Estadual de Campinas - Portal de Periodicos Eletronicos Cientificos and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2021
- Full Text
- View/download PDF
42. Simulation of discrete events in a Brazilian real estate services company in Southwest of Minas Gerais/Simulacao a eventos discretos em uma empresa Brasileira prestadora de services imobiliarios no Sudoeste Mineiro
- Author
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Filho, Vitor Hugo dos Santos, Silva, Lilian de Oliveira, and Ferreira, Jose da Silva Junior
- Published
- 2019
- Full Text
- View/download PDF
43. Is Medical Education Changing? Five Challenges for the Near Future
- Author
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Bruno Guimarães and Maria Amélia Ferreira
- Subjects
Computer Simulation ,Data Analysis ,Education ,Medical ,Evidence-Based Medicine ,Medicine ,Medicine (General) ,R5-920 - Abstract
N/a.
- Published
- 2020
- Full Text
- View/download PDF
44. Didactic use of genetic algorithms: a model for teaching robotics
- Author
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José Tarcísio Franco de Camargo, Eliana Anunciato Franco de Camargo, Estéfano Vizconde Veraszto, Gilmar Barreto, and Jorge Cândido
- Subjects
evolutionary algorithms ,process optimization ,computer simulation ,Special aspects of education ,LC8-6691 - Abstract
The study of articulated robots in higher education necessarily goes through the development of their kinematic models. The inverse kinematic model is usually described algebraically, although this representation is often difficult to obtain. Thus, the use of genetic algorithms in teaching robotics can be very attractive, since they allow students to easily develop models and predict the behavior of robots before their formal development. This way, the results of this work present a relatively fast way to simulate the inverse kinematic model, allowing the designer to have a broader view of the structure of a robot, coming to identify points that must be corrected or that can be optimized. It can be concluded that the use of genetic algorithms in robotics teaching is viable, having as main advantages their easy computational implementation and precision in the representation of kinematic models. .
- Published
- 2020
- Full Text
- View/download PDF
45. Automatic segmentation of brain tumors in magnetic resonance imaging
- Author
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Layse Ribeiro Mascarenhas, Audenor dos Santos Ribeiro Júnior, and Rodrigo Pereira Ramos
- Subjects
Diagnostic imaging ,Brain neoplasms ,Image processing, computer-assisted ,Magnetic resonance imaging ,Computer simulation ,Medicine - Abstract
ABSTRACT Objective To develop a computational algorithm applied to magnetic resonance imaging for automatic segmentation of brain tumors. Methods A total of 130 magnetic resonance images were used in the T1c, T2 and FSPRG T1C sequences and in the axial, sagittal and coronal planes of patients with brain cancer. The algorithms employed contrast correction, histogram normalization and binarization techniques to disconnect adjacent structures from the brain and enhance the region of interest. Automatic segmentation was performed through detection by coordinates and arithmetic mean of the area. Morphological operators were used to eliminate undesirable elements and reconstruct the shape and texture of the tumor. The results were compared with manual segmentations by two radiologists to determine the efficacy of the algorithms implemented. Results The correlated correspondence between the segmentation obtained and the gold standard was 89.23%. Conclusion It is possible to locate and define the tumor region automatically with no the need for user interaction, based on two innovative methods to detect brain extreme sites and exclude non-tumor tissues on magnetic resonance images.
- Published
- 2020
- Full Text
- View/download PDF
46. PROTOTIPAGEM DE TURBINA MALHA COM SISTEMA DE CONTROLE DE JATO.
- Author
-
SAZONOV, Yu. A., MOKHOV, M. A., TUMANYAN, Kh. A., FRANKOV, M. A., and BALAKA, N. N.
- Subjects
- *
COMPUTATIONAL fluid dynamics , *GRANULAR flow , *OIL fields , *GAS fields , *COMPUTER simulation , *JET engines - Abstract
The oil and gas market is unstable, which requires intensification of the exploratory research for working advanced and inexpensive pumping and compressor equipment out. Such equipment is crucial for more efficient hydrocarbon production. The ongoing research work is being undertaken to search and study new technical opportunities to develop advanced pumping and compressor equipment adapted to the complicated conditions of oil and gas production in solid abrasive particles in the flow of the pumped medium. New technology for gas compression has been evolved and further patented. The technology utilized a jet compressor unit to assist a turned on ejector while in the cyclic mode. Pulsed cycling of the ejector in contrary to continuous operation, increases the compression ratio of the multiplied gas. The energy recovery technology has been evolved, and further patented io increase the energy efficiency in the jet compressor unit. This technology applies a particular mesh turbine located at the flow part. The evolvement of smart turbines and compressor units was thoroughly researched. 3D-models have been developed in SOLIDWORKS 3D CAD system. The FloEFD software package of computational fluid dynamics has been used for computer modeling. In laboratory conditions, the performance of the mesh turbine prototype equipped with the jet control system has been successfully tested. Efficient and cheap compressor units solve many urgent issues in production connected with hydrocarbons extraction in harsh environments and those, which occur at the later stages of developing oil and gas fields. Specific research results can be used in other domains, including energy, transport, and robotics. [ABSTRACT FROM AUTHOR]
- Published
- 2020
47. Comparação Estatística de Autovalores de um Operador de Schrödinger Perturbado.
- Author
-
Artuso, Everton and Marim, Cesar
- Subjects
- *
SCHRODINGER operator , *RANDOM variables , *EIGENVALUES , *COMPUTER simulation , *TEACHING - Abstract
In this paper we introduce Schrödinger's operators in a naive and unpretentious way, but with some precision and didactics. The most studied periodic and random potential types are mentioned and, by numerical simulation, compare the eigenvalues of an operator's truncated matrix with a periodic potential and the same potential disturbed by an evenly distributed continuous random variable. We evaluated the magnitude of the random variable required to produce a significant difference between the eigenvalue sets. [ABSTRACT FROM AUTHOR]
- Published
- 2020
- Full Text
- View/download PDF
48. INFLUÊNCIA DE PAREDES VERDES NO DESEMPENHO TÉRMICO DE HABITAÇÕES SOCIAIS.
- Author
-
Resende de Sousa, Luana, de Souza, Henor Artur, and Pinto Gomes, Adriano
- Abstract
Copyright of PARC Pesquisa em Arquitetura e Construção is the property of Universidade Estadual de Campinas - Portal de Periodicos Eletronicos Cientificos and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2020
- Full Text
- View/download PDF
49. PARÂMETROS CLIMÁTICOS PARA SIMULAÇÃO DE DESEMPENHO TÉRMICO SEGUNDO A NBR 15.575.
- Author
-
Aparecida da Guarda, Emeli Lalesca, Cleonice Durante, Luciane, and Apolonio Callejas, Ivan Julio
- Abstract
Copyright of PARC Pesquisa em Arquitetura e Construção is the property of Universidade Estadual de Campinas - Portal de Periodicos Eletronicos Cientificos and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2020
- Full Text
- View/download PDF
50. Sistema de Medição de Distância Baseado em Visão Computacional Utilizando Laser de Linha.
- Author
-
Jesus Rocha, Walber C., Jesus, Samuel R., and Bittencourt, João Carlos N.
- Subjects
COMPUTER vision ,RASPBERRY Pi ,COMPUTER performance ,ERROR rates ,COMPUTER simulation ,AUTOMOTIVE navigation systems - Abstract
Copyright of Computing & System Journal (C&S) / Revista de Sistemas e Computação (RSC) is the property of FACS Servicos Educacionais S.A. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2020
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