17 results on '"multipol"'
Search Results
2. A Policy Framework and Prediction on Low Carbon Development in the Agricultural Sector in Indonesia.
- Author
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Adetama, Dwi Sartika, Fauzi, Akhmad, Juanda, Bambang, and Hakim, Dedi Budiman
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AGRICULTURAL industries ,GREENHOUSE gas mitigation ,ARTIFICIAL neural networks ,FOOD production - Abstract
Currently, Indonesia has adopted Low Carbon Development (LCD) in its Medium-Term Development Plan (RPJMN) 2020-2024. One of the priority activities is agriculture, which accounts for 12.21% of total greenhouse gas emissions. The agricultural sector is the victim affected by CO2 emissions, such as degradation, shrinkage of agricultural resources, land and water, shifting planting seasons, crop failures, decreased food production due to rising air temperatures, floods, and droughts. Greenhouse gas emissions are predicted to continue to increase along with the increasing demand for food. The purpose of this study is to predict and find an alternative policy framework for low-carbon development in the agricultural sector in Indonesia. This study uses a quantitative and qualitative approach by Artificial Neural Network (ANN), and multicriteria policy (MULTIPOL) analysis. The data were obtained through secondary data in 2014-2018, and the primary data are in-depth interviews, Focus Group Discussions (FGD), and field observations. The results of ANN show that the predictions of provinces that need to adopt low-carbon development in Indonesia are dominated in production centers such as Java Island, so an alternative policy framework using MULTIPOL is needed. Furthermore, this research establishes three scenarios, eight policies, twenty-six actions, and nine evaluative criteria in analyzing the LCD of the agricultural sector. The results indicate that LCD can be conducted by integrating the speed scenario (S2) with a value ranging from 6.3 (policy to increase capacity and quality of human resources) to 18.7 (circular economy). This scenario accommodates policies related to low carbon reduction and agricultural production increase, such as a circular economy, co-benefit adaptation strategies, low carbon technology innovation, and strengthening low carbon networks. [ABSTRACT FROM AUTHOR]
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- 2022
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3. A POLICY FRAMEWORK FOR SUSTAINABLE TOURISM DEVELOPMENT BASED ON PARTICIPATORY APPROACHES: A CASE STUDY IN THE KEDUNG OMBO TOURISM AREA-INDONESIA
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Nafiah ARIYANI and Akhmad FAUZI
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development ,kedung ombo ,policy ,tourism ,multipol ,Geography. Anthropology. Recreation ,Geography (General) ,G1-922 - Abstract
This research aims to find an alternative policy framework on tourism development Kedung Ombo-Indonesia. This study uses a qualitative approach by applying Multipol analysis method. Collecting data uses a focus group discussion method. The research participants are stakeholders of the area, such as local governments, reservoir managers, forest directors, and society. The result shows that an institutional development policy supported by good governance development programs is the best policy in the integrated scenario. Meanwhile, tourism development policies supported by developing public facilities, tourism convenience, tourism interest, marketing and promotion, and service quality are the best policy in the individual scenario.
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- 2022
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4. The Perspective Projects Promoting Sustainable Mobility by Active Travel to School on the Example of the Southern Poland Region.
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Cieśla, Maria and Macioszek, Elżbieta
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The paper presents a discussion concerning the development of projects regarding active travel with the policy of sustainable mobility, with active school transport in southern Poland being taken into special consideration. The implementation of the idea of sustainable school travel planning involves linking several social groups, including traffic planners and organizers, school administrators, governments, parents, and children. This, in turn, requires considering the criteria reported by all parties when choosing a scenario for the region's development in terms of transport solutions. The following study was based on the methodological foundations of multicriteria decision-making analysis. The research purpose of this paper is to identify and classify the actions, policies, and scenarios of active travel projects for the sustainable development of mobility based on the cities of southern Poland. The evaluation was carried out through expert methods with multicriteria decision-making tools based on the MULTIPOL (MULTI-criteria and POLicy) prospective analysis technique. It allowed for the selection of the most probable policy, which covered the six actions considered by the experts to be the most significant for the development of the active school transport system in the analyzed region. Such actions are as follows: identification of walking school bus routes, modernization of crosswalk lines, planning of walking and cycling routes to schools, promoting safety educational programs, distribution of active school transport booklets and cycling, and pedestrian skills training workshops. The paper presents a new method to evaluate the policies and actions regarding promoting sustainable (active) travel to school. The innovative approach results from assembling a mixed group of people (stakeholders) as experts. The mix of experts consisting of users (pupils and parents), practitioners, and scientist experts in this field allowed us to score policies, actions, and scenarios, enabling a wider spectrum of assessment than before. [ABSTRACT FROM AUTHOR]
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- 2022
- Full Text
- View/download PDF
5. THE DEVELOPMENT POLICY STRATEGY OF THE MANDALIKA TOURISM SPECIAL ECONOMIC ZONE, LOMBOK.
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SURYADE, LALU, FAUZI, AKHMAD, ACHSANI, NOER AZAM, and ANGGRAINI, EVA
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SPECIAL economic zones , *TOURISM websites , *TOURISM , *COASTAL development , *INDUSTRIAL capacity , *POWER (Social sciences) - Abstract
The development of the Mandalika Tourism Special Economic Zone (SEZ) is still running. Fluctuated economic and politic condition is in line with the changing national situation regarding policies of this SEZ. Being a new magnet of tourism, The Mandalika SEZ has demonstrated its role for coastal areas development in West Nusa Tenggara province. The sustainable development of this SEZ in the future are highly influenced by numerous action scenarios setting by stakeholders in multiple different layers. This research was aimed at analyzing a sustainable policy strategy for the Mandalika SEZ development in Central Lombok, Indonesia. It was conducted on October 2019 to March 2020. Data were gathered through in-depth interviews, Focus Group Discussions (FGD), and field observation. The MULTIPOL (a multicriteria-based policy analysis software) was used in seeking sundry possible implemented scenarios, policies, and actions. This research focused on establishing three scenarios, five policies, seven actions, and eleven evaluative criteria in analyzing the sustainability of the Mandalika Tourism SEZ. These numbers of scenarios, policies, actions, and criteria are established based on this research. The results of this research indicate the development of Mandalika Tourism SEZ currently can be conducted by integrating investment and local capacity empowerment (Blend-Based Scenario). The range values of this scenario starting from 12.2 (local-entrepreneurship policy) to 14.2 (man-made policy). This scenario accommodates policies both, developing local potency policies (localentrepreneurship, and culture-tourism) and policies possibly opening investment (man-made, transportation-infrastructure, and adoption of information-communication-technology). The attention on balancing programs on either investment or empowering local capacity needs to be looked after by stakeholders in multi-level institutions. [ABSTRACT FROM AUTHOR]
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- 2022
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6. A POLICY FRAMEWORK FOR SUSTAINABLE TOURISM DEVELOPMENT BASED ON PARTICIPATORY APPROACHES: A CASE STUDY IN THE KEDUNG OMBO TOURISM AREA-INDONESIA.
- Author
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ARIYANI, Nafiah and FAUZI, Akhmad
- Abstract
This research aims to find an alternative policy framework on tourism development Kedung Ombo-Indonesia. This study uses a qualitative approach by applying Multipol analysis method. Collecting data uses a focus group discussion method. The research participants are stakeholders of the area, such as local governments, reservoir managers, forest directors, and society. The result shows that an institutional development policy supported by good governance development programs is the best policy in the integrated scenario. Meanwhile, tourism development policies supported by developing public facilities, tourism convenience, tourism interest, marketing and promotion, and service quality are the best policy in the individual scenario. [ABSTRACT FROM AUTHOR]
- Published
- 2022
- Full Text
- View/download PDF
7. Applying MULTIPOL to Determine the Relevance of Projects in a Strategic IT Plan for an Educational Institution
- Author
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Raul Jose Martelo Gomez, Tomás José Fontalvo Herrera, and Carlos Alberto Severiche Sierra
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strategic it plan ,educational institution ,multipol ,decision-making ,pertinence ,Technology ,Engineering (General). Civil engineering (General) ,TA1-2040 - Abstract
Context: The purpose of this research was to determine the relevance of the projects defined in a strategic information plan of an educational institution through the application of MULTIPOL. The implementation of this technique facilitates the participation of the actors involved in the evaluation of the projects, in order to objectively define those with the greatest relevance to improve the academic and administrative processes of the institution. Method: The research carried out was quantitative with a descriptive non-experimental design, where a documentary review and interviews with teachers and administrators of the Fourth Poza de Manga Educational Institution were applied, in order to determine the parameters required to apply MULTIPOL and evaluate the projects with aspects relevant to the institution. Results: It was established that the most relevant projects for the institution were: Improvement of computer infrastructure, Incorporation of an online learning management system to support teaching processes, Use of social networks to disseminate relevant information to the educational community of the institution.of the users. Conclusions: There are projects that must be taken into account for the development of the institution, which were the incorporation of an online learning management system to support teaching processes, in the same way, the use of social networks to disseminate relevant information to the educational community of the institution, the implementation of a software to support the management of the academic area of the institution and formal planning of the organizational structure of the academic unit.
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- 2020
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8. Designing a Model for Scenarios Based on Identifying Key Factors and Analyzing the Key Actors' Interactions.
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Farhad Rahbar, Amir Ali Saifoddin-e Asl, Mohammad Ali Shahhosseini, and Eesa Niazi
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futures studies ,scenario planning ,micmac ,mactor ,scenario wizard ,multipol ,Political institutions and public administration (General) ,JF20-2112 - Abstract
Abstract Scenario planning is a technique that, given environmental uncertainties, offers several perspectives different from the future. The scenarios present the possible future scenarios in stories and provide alternative narratives about future-related situations. Scenario planning is one of the best and most powerful tools for future scientific knowledge that can be used to identify and review future changes and uncertainties in the future. Given the importance of scenario analysis and its effects on the country's macro-programs, organizations, firms, etc., the success and effectiveness of scenario-making processes has always been a concern for the management of countries. Considering the key role of casters in the future, this research seeks to extract the behavior of the actors in each of the key elements of the future, in order to develop existing methods, and then proceed with scenarios. To this end, the scenarios that were developed by researchers and experts in this field were reviewed and a new framework for studying scenario was obtained and validated by a team of experts in this area. Introduction An overview of scripting literature suggests that in none of the proposed methods consider the behavior of important actors as one of the future factors. Research in the literature of research shows that in all of these methods, first of all, it is to identify the key factors and then the forces of progression and identification of the uncertainty And eventually scenario with the choice of logic governing the scenario. In this regard, Zali and Sajadi (2017), Nazemi et al. (2017), Zali and Zamanipour (2016), Shakouri et al (2015), Bilali (2012) and Zali (2009) Made Therefore, in view of the key role of the cast in the future, this research seeks to extract the behavior of the actors in each of the identified key factors in order to develop existing methods and then proceed with scenario analysis. Regarding the consideration of the role of key actors in the scriptwriting process, Ali Zare Mirk-Abad, in his doctoral dissertation, has devised a scenario based on the viewer's perspective, in which the performance of the actors by him was conducted only in a perfectly qualitative manner (Q method). Case Study In this research, a sample of 12 experts and researchers in the field of future research was selected for interview and a sample of 43 people were selected to complete the questionnaire. The framework of the scenarios available by researchers and experts in this field was reviewed and a new framework for studying the obtained scenarios was obtained. And its credibility was confirmed by a group of experts in the field. Materials and Methods In this research, both field and library methods have been used to collect information. In the present study, since the main focus of the proposed framework is on the minds of experts and is depicted in the various stages of the proposed framework, the wisdom in the minds of experts, the selection of experts is of particular importance. In the current study, the number of samples selected for interview was equal to 12 people selected by snowball method. In the process of selecting an example, qualitative researchers can use a snowball sampling method in which a participant in our research leads to other participants or snowball. With this number of interviews, the investigator's diagnosis was that the collected data reached a saturated point and there was no need for further interviews. In choosing this sample number, issues such as time, availability of interviewees and their degree of cooperation have been considered. Finally, in order to measure the model through scrolling, a questionnaire consisting of 21 questions was sent to validate the model to 43 experts and researchers in the field of futures studies. Finally, 17 valid questionnaires were collected. Discussion and Results In this article, the approach to studying the behavior of actors is based on the approach of the French school (Michel Godet) and the method of MACTOR, which was done for the first time. In the meantime, the scenario approach in his treatise is based on the Scenario model of the Global Business Network or the Schwartz model, but in the proposed model, this paper describes the scenario development approach based on the model. In the scenario model, according to Michel Godet, all the points mentioned in the Peter Schwartz model are accepted. But in one case, his approach to the subject is deeply rooted in Schwartz's method, and this involves the need for formal analysis in parts of the scenario process, which is, of course, not very different. For example, in the methodology, the exact identification of the subject of futures studies with strategic planning in the first step and the search for effective variables (Schwartz's forces and forces) is necessary in steps two and three. But in order to search for variables or factors and the effect of one on the other, Godet also recommended the formal method of structural analysis in addition to setting up a futuristic studio (Schwartz scenario group) and extensive consultation with practitioners and experts. Or, in the search for possible or probable scenarios or futures, which, like the Schwartz analysis axes, are composed of various combinations of variables, has also benefited from the analysis of morphology. Conclusion This paper attempts to use the meta-combination method to propose a suitable framework for performing scenario-based studies. To this end, the scenario frameworks presented by researchers and experts in this field were reviewed and a new framework for studying scenario was obtained. The difference in the framework provided with other frameworks is to consider the behavior of key actors and to provide strategic options for policy making.
- Published
- 2018
- Full Text
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9. Applying MULTIPOL to Determine the Relevance of Projects in a Strategic IT Plan for an Educational Institution.
- Author
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Martelo Gómez, Raúl José, Fontalvo Herrera, Tomas José, and Severiche Sierra, Carlos Alberto
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- 2020
- Full Text
- View/download PDF
10. The Perspective Projects Promoting Sustainable Mobility by Active Travel to School on the Example of the Southern Poland Region
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Maria Cieśla and Elżbieta Macioszek
- Subjects
Renewable Energy, Sustainability and the Environment ,active travel ,active school transport ,MULTIPOL ,sustainable mobility ,Geography, Planning and Development ,Building and Construction ,Management, Monitoring, Policy and Law - Abstract
The paper presents a discussion concerning the development of projects regarding active travel with the policy of sustainable mobility, with active school transport in southern Poland being taken into special consideration. The implementation of the idea of sustainable school travel planning involves linking several social groups, including traffic planners and organizers, school administrators, governments, parents, and children. This, in turn, requires considering the criteria reported by all parties when choosing a scenario for the region’s development in terms of transport solutions. The following study was based on the methodological foundations of multicriteria decision-making analysis. The research purpose of this paper is to identify and classify the actions, policies, and scenarios of active travel projects for the sustainable development of mobility based on the cities of southern Poland. The evaluation was carried out through expert methods with multicriteria decision-making tools based on the MULTIPOL (MULTI-criteria and POLicy) prospective analysis technique. It allowed for the selection of the most probable policy, which covered the six actions considered by the experts to be the most significant for the development of the active school transport system in the analyzed region. Such actions are as follows: identification of walking school bus routes, modernization of crosswalk lines, planning of walking and cycling routes to schools, promoting safety educational programs, distribution of active school transport booklets and cycling, and pedestrian skills training workshops. The paper presents a new method to evaluate the policies and actions regarding promoting sustainable (active) travel to school. The innovative approach results from assembling a mixed group of people (stakeholders) as experts. The mix of experts consisting of users (pupils and parents), practitioners, and scientist experts in this field allowed us to score policies, actions, and scenarios, enabling a wider spectrum of assessment than before.
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- 2022
- Full Text
- View/download PDF
11. APLICACIÓN DE MULTIPOL PARA DETERMINAR MEJOR PROPUESTA EN EDUCACIÓN DE CANDIDATOS A LA ALCALDÍA DE CARTAGENA.
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Martelo, Raúl J., Hamdan Rodriguez, Muna, and Jaramillo, Juan M.
- Abstract
Copyright of AGLALA Revista Virtual is the property of Corporacion Universitaria Rafael Nunez 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.)
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- 2018
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12. Analisis Keberlanjutan Buah Naga Organik di Kabupaten Banyuwangi
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Asmara, Pongky Hari, Muksin, Muksin, Eko S, Nantil Bambang, Asmara, Pongky Hari, Muksin, Muksin, and Eko S, Nantil Bambang
- Abstract
Indonesia sebagai negara yang memiliki kondisi tanah yang subur sehingga jika ditanam mudah untuk tumbuh dan juga terdapat sumber daya alam yang melimpah, oleh karena itu sebagian besar masyarakat Indonesia bergerak di bidang pertanian. Salah satu daerah yang mayoritas petaninya bergerak di bidang pertanian khususnya pertanian organik adalah Kabupaten Banyuwangi. Komoditas organik yang dihasilkan Kabupaten Banyuwangi adalah beras organik dan produk turunannya, buah naga, jambu biji, kopi dan sayuran. Dinas Pertanian dan Pangan Kabupaten Banyuwangi turut serta dalam pengembangan pertanian organik pada tahun 2012. Produk turunan pertanian organik di Kabupaten Banyuwangi yang saat ini mulai berkembang ke pasar ekspor adalah buah naga organik. Buah naga organik telah diakui sebagai produk organik dari Lembaga Sertifikasi Organik Seloliman (LeSOS) pada tahun 2018. Metode yang digunakan dalam penelitian ini adalah Multi Dimensional Scaling (MDS) dan Multicriteria Policy (Multipol). Analisis menggunakan 5 dimensi keberlanjutan (dimensi ekologi, dimensi ekonomi, dimensi sosial, dimensi kelembagaan dan dimensi teknologi)., Indonesia is a country with fertile soil conditions so that if it is planted it is easy to grow and there are also abundant natural resources, therefore the majority of Indonesian people are engaged in agriculture. One of the areas where the majority of farmers are engaged in agriculture, especially organic agriculture, is Banyuwangi Regency. The organic commodities produced by Banyuwangi Regency are organic rice and its derivative products, dragon fruit, guava, coffee and vegetables. The Department of Agriculture and Food of Banyuwangi Regency participated in the development of organic agriculture in 2012. The derivative product of organic agriculture in Banyuwangi Regency which is currently starting to develop into the export market is organic dragon fruit. Organic dragon fruit has been recognized as an organic product from the Seloliman Organic Certification Institute (LeSOS) in 2018. The methods used in this research are Multi Dimensional Scaling (MDS) and Multicriteria Policy (Multipol). The analysis uses 5 dimensions of sustainability (ecological dimensions, economic dimensions, social dimensions, institutional dimensions and technological dimensions). The results of the analysis of the sustainability status of organic dragon fruit are "quite sustainable" with a value of 59.93.
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- 2022
13. Spectroscopy and detachment of molecular anions of astrophysical interest
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Simpson, Malcolm James and Simpson, Malcolm James
- Abstract
Experimentelle Untersuchungen negativer Molekülionen, einst beschränkt auf die Bestimmung von Elektronenaffinitäten, ist in den letzten Jahren zu einem Mainstream-Schwerpunkt für physikalische und chemische Forschung. Die Verfügbarkeit von schmalen Lichtquellen, fortschrittlichen Techniken in Ionenspeicherung und Methoden der Aktionsspektroskopie haben Forschergruppen die Charakterisierung von Molekülzustände, Lebensdauer und Dynamik. Die hier vorgestellten veröffentlichten Werke Dissertation einen breiten Überblick über moderne experimentelle Untersuchungen negativer Ionen. Die Spektroskopie des zweiten Schwingungsobertons in OH^- ist ein Beispiel für die Anwendung einer hochmodernen Methode der Aktionsspektroskopie. Schwellenwert für die Lichtablösung des astrophysikalischen Anions CN^- treibt unser Verständnis der Wirkung von molekularen Rotation auf der Dipol-Elektron-Wechselwirkung. Die Beobachtung eines dipolgebundenen Zustands in der Schwellenphotoablösung von C_3N^- weist auf das Potenzial für die Bildung von C_3N^- hin Arten im interstellaren Raum. Die vorstehenden Messungen wurden alle im 22. Polionenfalle betrieben in der Arbeitsgruppe „Molekulare Systeme“ der Universität Innsbruck. Diese Studien verbunden mit der Präsentation von zwei weiteren Projekten, nämlich Quantenzustandspräparation und Detektion von H_2^+ co-gefangen mit lasergekühltem Be^+ in a Lineare Quadrupolfalle im Laboratoire Kastler-Brossel, Paris und Schwellen-Photodetachment von CH^- am DESIREE-Speicherring an der Universität Stockholm Highlight die Vielfalt in der Anwendbarkeit der Molekularspektroskopie und der Bandbreite der Technologien in modernen experimentellen Untersuchungen verwendet., Experimental investigations of negative molecular ions, once restricted to the determination of electron affinities, has, in recent years, become a mainstream focus for physical and chemical research. The availability of narrow light sources, advanced techniques in ion storage and methods of action spectroscopy have allowed research groups to characterise molecular states, lifetimes and dynamics. The published works presented in this dissertation represent a broad overview of modern experimental investigations of negative ions. Spectroscopy of the second vibrational overtone in OH^- is an example of the application of a state of the art method in action spectroscopy. Threshold photodetachment of the astrophysical anion CN^- pushes our understanding of the effects of molecular rotation on the dipole-electron interaction. The observation of a dipole bound state in threshold photodetachment of C_3N^- indicates at the potential for formation of this species in interstellar space. The foregoing measurements were all performed in the 22- pole ion trap operated in the working group “Molecular Systems” at the University of Innsbruck. These studies combined with the presentation of two further projects, namely quantum state preparation and detection of H_2^+ co-trapped with laser cooled Be^+ in a linear quadrupole trap at the Laboratoire Kastler-Brossel, Paris and threshold photodetachment of CH^- at the DESIREE storage ring at Stockholm University highlight the diversity in the applicability of molecular spectroscopy and the range of technologies used in modern experimental investigations., Malcolm James Simpson, MSc, Abweichender Titel laut Übersetzung der Verfasserin/des Verfassers, Kumulative Dissertation aus vier Artikeln, In den Artikeln sind die Zahlen tiefgestellt und -+ hochgestellt, Dissertation University of Innsbruck 2021
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- 2021
14. Applying MULTIPOL to Determine the Relevance of Projects in a Strategic IT Plan for an Educational Institution
- Author
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Martelo, Raúl J, Fontalvo Herrera, Tomás José, Severiche Sierra, Carlos Alberto, Martelo, Raúl J, Fontalvo Herrera, Tomás José, and Severiche Sierra, Carlos Alberto
- Abstract
Context: The purpose of this research was to determine the relevance of the projects defined in a strategic information plan of an educational institution through the application of MULTIPOL. The implementation of this technique facilitates the participation of the actors involved in the evaluation of the projects, in order to objectively define those with the greatest relevance to improve the academic and administrative processes of the institution. Method: The research carried out was quantitative with a descriptive non-experimental design, where a documentary review and interviews with teachers and administrators of the Fourth Poza de Manga Educational Institution were applied, in order to determine the parameters required to apply MULTIPOL and evaluate the projects with aspects relevant to the institution. Results: It was established that the most relevant projects for the institution were: Improvement of computer infrastructure, Incorporation of an online learning management system to support teaching processes, Use of social networks to disseminate relevant information to the educational community of the institution.of the users. Conclusions: There are projects that must be taken into account for the development of the institution, which were the incorporation of an online learning management system to support teaching processes, in the same way, the use of social networks to disseminate relevant information to the educational community of the institution, the implementation of a software to support the management of the academic area of the institution and formal planning of the organizational structure of the academic unit., Contexto: La presente investigación tuvo por objetivo determinar la pertinencia de los proyectos definidos en un plan estratégico informático de una institución educativa mediante la aplicación de MULTIPOL. La implementación de esta técnica facilita la participación de los actores involucrados en la evaluación de los proyectos, con el fin de definir de manera objetiva aquellos con la mayor relevancia para mejorar los procesos académicos y administrativos de la institución. Método: La investigación realizada fue de tipo cuantitativo con diseño no experimental transeccional descriptivo, donde se aplicó una revisión documental y entrevistas a docentes y administrativos de la Institución Educativa Cuarta Poza de Manga, con el fin de determinar los parámetros requeridos para aplicar MULTIPOL y evaluar los proyectos con aspectos relevantes a la institución. Resultados: Se estableció que los proyectos con mayor pertinencia para la institución fueron: Mejoramiento de la infraestructura de computadores, Incorporación de un sistema de gestión de aprendizaje en línea para apoyar los procesos de enseñanza, Utilización de redes sociales para difundir información relevante a la comunidad educativa de la institución. Conclusiones: Existen, proyectos que se deben tener en cuenta para el desarrollo de la institución, los cuales fueron Incorporación de un sistema de gestión de aprendizaje en línea para apoyar los procesos de enseñanza, de igual manera, la Utilización de redes sociales para difundir información relevante a la comunidad educativa de la institución, la Implementación de un software para apoyar la gestión del área académica de la institución y Planificación formal de la estructura organizacional de la unidad académica.
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- 2020
15. Contribucions a la teoria de l'aresta-acoloriment de grafs : snarks i multipols
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Vilaltella Castanyer, Joan, 1969, Fiol Mora, Miquel Àngel, Fiol Mora, Miguel Ángel, and Universitat Politècnica de Catalunya. Departament de Matemàtica Aplicada IV
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Lema de Paritat ,Grafs, Teoria de ,Snark ,Tait-coloring ,519.1 ,Matemàtiques i estadística [Àrees temàtiques de la UPC] ,Parity Lemma ,Logic gate ,Irreducibility ,Heuristic algorithm ,Tait-acoloriment ,Multipol ,Cubic graph ,Factorization ,Graf cúbic - Abstract
A graph where every vertex has three neighboring vertices is a cubic graph. An edge-coloring is an assignment of colors to the edges of a graph in such a way that the edges incident to a vertex have no repeated colors. An edge-coloring is optimal if it uses the minimum possible number of colors. Vizing's Theorem implies that an optimal edge-coloring of a cubic graph requires three or four colors. If three colors are enough, we call the edge-coloring a Tait-coloring. If four colors are needed, we call the graph a snark. Holyer proved that deciding wether a cubic graph is Tait-colorable is an NP-complete problem, therefore it is widely believed that it is a very difficult or intractable problem in the general case. Nevertheless, theory does not forbid efficient solutions in specific cases: this is called "breaking intractability". We describe an heuristic algorithm called CVD, for "Conflicting Vertex Displacement", which has a good empirical performance in random regular graphs. Also it allows us to check a conjecture by Biggs on "odd graphs" in instances with milions of vertices and edges, using moderately powerful computers. Snarks are relevant in graph theory: they appear often as minimal counterexamples of important conjectures, such as the Cycle Double Cover Conjecture (every bridgeless graph has a family of cycles such that every edge belongs to exactly two cycles of the family). In the analysis and synthesis of snarks, multipoles, "pieces" of cubic graphs with free ends that can be joined to each other, are often used. In a Tait-colored multipole, the number of equally colored free ends for each color and the total number of free ends have the same parity (the number of vertices of the multipole has this same parity, too). This result, known as the Parity Lemma, allows the interpretation of multipoles as logic gates and cubic graphs as logic circuits. This gives a very general way to construct snarks, based on logic circuits with no valid Boolean assignment, and allows us to relate the Tait-coloring of cubic graphs to integer factorization. In particular, we can construct snarks from prime numbers. A state of a multipole is the restriction of a Tait-coloring of the multipole to its free ends. If the set of states of a multipole is a non-empty subset of the set of states of another multipole with a larger number of vertices, we call the smaller multipole a reduction of the larger one. An irreducible multipole is a multipole with no reduction (an obvious example is a minimal multipole, that is, with no vertices or with a single vertex). The maximum number of vertices of an irreducible multipole as a function of its number (m) of free ends is denoted by v(m). Its behavior is well-known only for m, Un graf on cada vèrtex té tres vèrtexs adjacents és un graf cúbic. Un aresta-acoloriment és una assignació de colors a les arestes d'un graf de tal manera que no es repeteixin colors en les arestes incidents a un mateix vèrtex. Un aresta-acoloriment és òptim si utilitza el mínim nombre possible de colors. El Teorema de Vizing implica que un aresta-acolorament òptim d'un graf cúbic requereix tres o quatre colors. Si tres colors són suficients, de l'aresta-acoloriment en diem Tait-acoloriment. Si fan falta quatre colors, diem que el graf és un snark. Holyer va demostrar que determinar si un graf cúbic és Tait-acolorible és un problema NP-complet, i per tant se suposa àmpliament que és un problema molt difícil o intractable en el cas general. Tanmateix, la teoria no prohibeix que es puguin resoldre eficientment casos concrets: és el que s'anomena "ruptura de la intractabilitat". Descrivim un algorisme heurístic anomenat DVC, per "Desplaçament de Vèrtexs Conflictius", que té un bon rendiment empíric en grafs regulars aleatoris. També ens permet comprovar una conjectura de Biggs sobre els "odd graphs" en instàncies de milions de vèrtexs i arestes, utilitzant ordinadors de potència moderada. Els snarks són rellevants en la teoria de grafs: sovint apareixen com a contraexemples minimals de conjectures importants, com per exemple la Conjectura del Recobriment Doble per Cicles (tot graf sense ponts té una família de cicles tal que cada aresta pertany exactament a dos dels cicles). En l'anàlisi i síntesi d'snarks se solen utilitzar multipols, que són "peces" de grafs cúbics amb extrems lliures que es poden unir entre ells. En un multipol Tait-acolorit, el nombre d'extrems lliures de cada color té la mateixa paritat que el nombre total d'extrems lliures (i que el nombre de vèrtexs del multipol). Aquest resultat, conegut com el Lema de Paritat, permet interpretar els multipols com a portes lògiques i els grafs cúbics com a circuits lògics. Això proporciona una manera molt general de construir snarks, en base a circuits lògics sense cap assignació booleana vàlida, i també permet relacionar l'aresta-acoloriment de grafs amb la factorització de nombres enters. En particular, permet construir snarks a partir de nombres primers. Un estat d'un multipol és la restricció d'un Tait-acoloriment del multipol als seus extrems lliures. Si el conjunt d'estats d'un multipol és un subconjunt no buit del conjunt d'estats d'un altre multipol amb un nombre de vèrtexs més gran, diem que n'és una reducció. Un multipol irreductible és un multipol sense cap reducció (un exemple obvi és un multipol minimal, és a dir sense vèrtexs o amb un sol vèrtex). El màxim nombre de vèrtexs d'un multipol irreductible en termes del seu nombre d'extrems lliures és una funció, representada per v(m), el comportament de la qual només es coneix exactament per m
- Published
- 2015
16. Contribucions a la teoria de l'aresta-acoloriment de grafs : snarks i multipols
- Author
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Universitat Politècnica de Catalunya. Departament de Matemàtica Aplicada IV, Fiol Mora, Miquel Àngel, Vilaltella Castanyer, Joan, Universitat Politècnica de Catalunya. Departament de Matemàtica Aplicada IV, Fiol Mora, Miquel Àngel, and Vilaltella Castanyer, Joan
- Abstract
A graph where every vertex has three neighboring vertices is a cubic graph. An edge-coloring is an assignment of colors to the edges of a graph in such a way that the edges incident to a vertex have no repeated colors. An edge-coloring is optimal if it uses the minimum possible number of colors. Vizing's Theorem implies that an optimal edge-coloring of a cubic graph requires three or four colors. If three colors are enough, we call the edge-coloring a Tait-coloring. If four colors are needed, we call the graph a snark. Holyer proved that deciding wether a cubic graph is Tait-colorable is an NP-complete problem, therefore it is widely believed that it is a very difficult or intractable problem in the general case. Nevertheless, theory does not forbid efficient solutions in specific cases: this is called "breaking intractability". We describe an heuristic algorithm called CVD, for "Conflicting Vertex Displacement", which has a good empirical performance in random regular graphs. Also it allows us to check a conjecture by Biggs on "odd graphs" in instances with milions of vertices and edges, using moderately powerful computers. Snarks are relevant in graph theory: they appear often as minimal counterexamples of important conjectures, such as the Cycle Double Cover Conjecture (every bridgeless graph has a family of cycles such that every edge belongs to exactly two cycles of the family). In the analysis and synthesis of snarks, multipoles, "pieces" of cubic graphs with free ends that can be joined to each other, are often used. In a Tait-colored multipole, the number of equally colored free ends for each color and the total number of free ends have the same parity (the number of vertices of the multipole has this same parity, too). This result, known as the Parity Lemma, allows the interpretation of multipoles as logic gates and cubic graphs as logic circuits. This gives a very general way to construct snarks, based on logic circuits with no valid Boolean assignment, an, Un graf on cada vèrtex té tres vèrtexs adjacents és un graf cúbic. Un aresta-acoloriment és una assignació de colors a les arestes d'un graf de tal manera que no es repeteixin colors en les arestes incidents a un mateix vèrtex. Un aresta-acoloriment és òptim si utilitza el mínim nombre possible de colors. El Teorema de Vizing implica que un aresta-acolorament òptim d'un graf cúbic requereix tres o quatre colors. Si tres colors són suficients, de l'aresta-acoloriment en diem Tait-acoloriment. Si fan falta quatre colors, diem que el graf és un snark. Holyer va demostrar que determinar si un graf cúbic és Tait-acolorible és un problema NP-complet, i per tant se suposa àmpliament que és un problema molt difícil o intractable en el cas general. Tanmateix, la teoria no prohibeix que es puguin resoldre eficientment casos concrets: és el que s'anomena "ruptura de la intractabilitat". Descrivim un algorisme heurístic anomenat DVC, per "Desplaçament de Vèrtexs Conflictius", que té un bon rendiment empíric en grafs regulars aleatoris. També ens permet comprovar una conjectura de Biggs sobre els "odd graphs" en instàncies de milions de vèrtexs i arestes, utilitzant ordinadors de potència moderada. Els snarks són rellevants en la teoria de grafs: sovint apareixen com a contraexemples minimals de conjectures importants, com per exemple la Conjectura del Recobriment Doble per Cicles (tot graf sense ponts té una família de cicles tal que cada aresta pertany exactament a dos dels cicles). En l'anàlisi i síntesi d'snarks se solen utilitzar multipols, que són "peces" de grafs cúbics amb extrems lliures que es poden unir entre ells. En un multipol Tait-acolorit, el nombre d'extrems lliures de cada color té la mateixa paritat que el nombre total d'extrems lliures (i que el nombre de vèrtexs del multipol). Aquest resultat, conegut com el Lema de Paritat, permet interpretar els multipols com a portes lògiques i els grafs cúbics com a circuits lògics. Això proporciona una manera molt gener, Postprint (published version)
- Published
- 2015
17. Simulation von Quantum Corrals
- Author
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Donner, Bernd, Kleber, Manfred (Prof. Dr.), Groß, Axel (Prof. Dr.), and Stutzmann, Martin (Prof. Dr.)
- Subjects
Physik ,Quantum Corral ,Kondo effect ,Quantum mirage ,Scanning tunnelling microscope ,Multipole ,Kondo Effekt ,Quantum Mirage ,Rastertunnelmikroskop ,Multipol ,ddc:530 - Abstract
Based on energy dependent Green's functions, we developed a simulation for the microscopic part of a scanning tunnelling microscope. This simulation is capable of reproducing STM images of simple metallic surfaces, quantum corrals and quantum mirages. The simulation is based on a scattering theory, which has been established to deal adequately with localised sources. This theory permits a completely three dimensional description of an STM. Furthermore, this framework can be extended in several ways. For instance, it can take into account multipole sources. This enables a more realistic simulation of experimental pictures, since the high resolution of an STM achieved with e.g. tungsten tips is attributed to the fact that the electrons originate from d orbitals. In addition, the theory can also be extended to describe the anomalous scattering properties of Kondo adatoms. Thus the simulation can also reproduce the recent experimental results observed in the Kondo mirage. Basierend auf energieabhängigen Greenfunktionen wird eine Simulation eines Rastertunnnelmikroskops entwickelt. Diese Simulation kann nicht nur STM Bilder von einfachen Metalloberflächen reproduzieren, sondern auch die von Quantum Corrals und Quantum Mirages. Der Simulation liegt eine Streutheorie zugrunde, die in Hinblick darauf entwickelt wurde, lokalisierte Teilchenquellen adäquat zu beschreiben. Diese Theorie erlaubt eine vollständig dreidimensionale Modellierung des STMs. Zudem lässt diese Theorie eine Vielzahl von Erweiterungen zu. So können zum Beispiel Multipol Quellen berücksichtigt werden, die beispielsweise die Emission von Elektronen aus d-Orbitalen beschreiben können. Zudem kann die Theorie so erweitert werden, dass die anormalen Streueigenschaften von Kondo Adatomen beschrieben werden. Folglich kann die Simulation auch die jüngsten experimentellen Resultate, die in einem Kondo Mirage beobachtet wurden, reproduzieren.
- Published
- 2007
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