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Recurso libre

Combining methods for searches in nested metric spaces
Gercek, Hugo - Reyes, Nora Susana - Deco, Claudia - Bender, Cristina - Salvetti, Mariano

Formato:	Objeto de conferencia, Objeto de conferencia
Enlaces:	Most search methods in metric spaces assume that the topology of the object collection is reasonably regular. However, there exist nested metric spaces, where objects in the collection can be grouped into clusters or subspaces, in such a way that…
Fecha:	2012-07-18
Recurso:	Unversidad Nacional de La Plata

Recurso libre

Decision support system for seismic risks
Somodevilla, María J. - Nava, Angélica - Pineda, Ivo H. - Priego, Ángeles Belém - Castillo, Esteban

Formato:	Objeto de conferencia, Objeto de conferencia
Enlaces:	This paper focuses on prediction and prevention of seismic risk through a system for decision making. Data Warehousing and OLAP operations are applied, together with, data mining tools like association rules, decision trees and clustering to predict aspects such as…
Fecha:	2012-07-18
Recurso:	Unversidad Nacional de La Plata

Recurso libre

Automatic Instrumentation with a PC-based Data Acquisition System for Experiments in Optical Characterization of Materials, Automatic Instrumentation with a PC-based Data Acquisition System for Experiments in Optical Characterization of Materials
Andrade Lucio, J. A. - Vite-Chávez, O. - Olivera-Reyna, Roberto - Olivera-Reyna, Reynel - Ibarra-Manzano, O. G. - Alvarado-Méndez, E. - Rojas-Laguna, R. - Estudillo-Ayala, J. M. - Trejo-Durán, M. - Gutiérrez-Martín, H.

Formato:	Artículo revisado por pares, Investigación, Research
Enlaces:	Se presenta un control automático simple para aplicaciones de caracterización óptica de materiales usando la técnica Z-scan. En particular, se enfatiza el proceso de automatización. Para este propósito, se usó un puerto de comunicación de I/O de una tarjeta de…
Fecha:	2012-02-10
Recurso:	Acta Universitaria

Recurso libre

Assessing different rule quality measures in a genetic algorithm for discovering association rules
Soto, Wilson - Olaya Benavides, Amparo

Formato:	Objeto de conferencia, Objeto de conferencia
Enlaces:	The genetic algorithms have seen applied in knowledge discovery and specially for discovering association rules. In this paper, we explore the use of di erent rule quality measures in the tness function in a genetic algorithm for discovering association rules.…
Fecha:	2012-11-06
Recurso:	Unversidad Nacional de La Plata

Recurso libre

Efficient similarity search on multimedia databases
Lopresti, Mariela - Miranda, Natalia - Piccoli, María Fabiana - Reyes, Nora Susana

Formato:	Objeto de conferencia, Objeto de conferencia
Enlaces:	Manipulating and retrieving multimedia data has received increasing attention with the advent of cloud storage facilities. The ability of querying by similarity over large data collections is mandatory to improve storage and user interfaces. But, all of them are expensive…
Fecha:	2012-11-06
Recurso:	Unversidad Nacional de La Plata

Recurso libre

A PSO-based clustering approach assisted by initial clustering information
Velázquez, Carlos - Cagnina, Leticia - Errecalde, Marcelo Luis

Formato:	Objeto de conferencia, Objeto de conferencia
Enlaces:	Clustering of short texts is an important research area because of its applicability in information retrieval and text mining. To this end was proposed CLUDIPSO, a discrete Particle Swarm Optimization algorithm to cluster short texts. Initial results showed that CLUDIPSO…
Fecha:	2012-11-06
Recurso:	Unversidad Nacional de La Plata

Recurso libre

ODE: ontology-based software development environment
Falbo, Ricardo de Almeida - Natali, Ana Candida Cruz - Mian, Paula Gomes - Bertollo, Gleidson - Ruy, Fabiano Borges

Formato:	Objeto de conferencia, Objeto de conferencia
Enlaces:	Software tools processing partially common set of data should share an understanding of what these data mean. Since ontologies have been used to express formally a shared understanding of information, we argue that they can be used to improve integration…
Fecha:	2012-10-18
Recurso:	Unversidad Nacional de La Plata

Recurso libre

Analysis of two indexing structures for textual databases
Marín, Mauricio - Bonacic, Carolina - Casas, Sandra

Formato:	Objeto de conferencia, Objeto de conferencia
Enlaces:	This article describes strategies devised to improve the efficiency of two classical index data structures for parallel textual databases. The design and cost evaluation is effected on top of the bulk-synchronous model of parallel computing. This allows us to compare…
Fecha:	2012-10-29
Recurso:	Unversidad Nacional de La Plata

Recurso libre

A functional approach for in line analytical processing
Necco, Claudia Mónica - Quintas, Luis - Nuno Olivera, J.

Formato:	Objeto de conferencia, Objeto de conferencia
Enlaces:	This paper describes an approach to On Line Analytical Processing (OLAP), expresed in the declarative programming paradigm. We define a collection of functions that capture some of the functionality currently provided by multidimensional database product. This is done by defining…
Fecha:	2012-10-05
Recurso:	Unversidad Nacional de La Plata

Recurso libre

10.

Introducción a las bases de datos: fundamentos y diseño, Introduction to databases: fundamentals and design
Bertone, Rodolfo Alfredo - Thomas, Pablo Javier

Formato:	Articulo, Revision
Enlaces:	The main purpose of this book is to present the contents of an introductory course in databases. In this regard, one can find a number of material validity and recognized different scopes. This work is developed under the guidelines that…
Fecha:	2012-10-09
Recurso:	Unversidad Nacional de La Plata

Recurso libre

11.

Fuzzy prolog with default knowledge
Vaucheret, Claudio A.

Formato:	Objeto de conferencia, Objeto de conferencia
Enlaces:	In omplete information is a problem in many aspe ts of a tual environments. Further- more, in many s enarios the knowledge is not represented in a risp way. It is ommon to nd fuzzy on epts or problems with…
Fecha:	2012-10-12
Recurso:	Unversidad Nacional de La Plata

Recurso libre

12.

Discourse Across Borders: A Quantitative Analysis of Mexican and American Media Discourses
Owens, Jesse Sinclair

Formato:	Electronic Thesis or Dissertation, Tesis
Enlaces:	Critical Discourse Analysis (CDA) is a well-known form of discourse analysis which is built around the examination of the ideological, social, historical and cultural components of discourse. The field has become well-established since the early 1980s…
Fecha:	2012-05-10
Recurso:	CIRIA

Recurso libre

13.

Classification rules obtained from dynamic self-organizing maps
Hasperué, Waldo - Lanzarini, Laura Cristina

Formato:	Objeto de conferencia, Objeto de conferencia
Enlaces:	La obtención de conocimiento a partir de la información existente es un proceso no trivial que consiste en identificar patrones válidos, novedosos, potencialmente útiles y comprensibles a partir de los datos disponibles. La Minería de Datos es el área de…
Fecha:	2012-10-19
Recurso:	Unversidad Nacional de La Plata

Recurso libre

14.

Developing a PQ monitoring system for assessing power quality and critical areas detection, Desarrollo de un sistema de monitoreo de calidad de potencia para la evaluación de calidad de potencia y la detección de zonas críticas
Romero Miguel ; Universidad Nacional de Colombia - Pardo Ricardo ; Universidad Nacional de Colombia - Gallego Luis ; Universidad Nacional de Colombia

Formato:	, , ,
Enlaces:	This paper outlines the development of a power quality monitoring system. The system is aimed at assessing power quality and detecting critical areas throughout at distribution system. Such system integrates a hardware system and a software processing tool developed in…
Fecha:	2011-10-31
Recurso:	Ingeniería e investigación

Recurso libre

15.

CLUIN – a new method for extracting rules for large databases
Hasperué, Waldo - Corbalán, Leonardo

Formato:	Objeto de conferencia, Objeto de conferencia
Enlaces:	When there is a need to understand the data stored in a database, one of the main requirements is being able to extract knowledge in the form of rules. Classification strategies allow extracting rules almost naturally. In this paper, the…
Fecha:	2012-11-05
Recurso:	Unversidad Nacional de La Plata

Recurso libre

16.

Decoding the agenda: An analytical model for manifest and latent knowledge of the public agenda, Decoding the agenda: An analytical model for manifest and latent knowledge of the public agenda, La descodificación de la agenda: Un modelo analítico para el conocimiento manifiesto y latente de la agenda pública
Andréu Abela, Jaime; Universidad de Granada

Formato:	info:eu-repo/semantics/article, info:eu-repo/semantics/publishedVersion
Enlaces:	Purpose: The aim of this paper is to show a model of analysis based on the hypothesis of the agenda-setting but with a clear longitudinal, multidimensional and multiparadigmatic component. Design/methodology: The theory of the media agenda (agenda setting) is one…
Fecha:	2012-12-10
Recurso:	Intangible capital

Recurso libre

17.

Selecting COTS components: a comparative study on E-Payment systems
Cechich, Alejandra - Taryano, Karina

Formato:	Objeto de conferencia, Objeto de conferencia
Enlaces:	Using COTS software promises faster time-to-market, which can yield substantial advantages over competitors with regards to earlier placement of a new product on a market. At the same time, component-based software introduces risks, such as unknown quality properties of the…
Fecha:	2012-10-18
Recurso:	Unversidad Nacional de La Plata

Recurso libre

18.

An ontological approach to federated data integration
Buccella, Agustina - Cechich, Alejandra - Brisaboa, Nieves R.

Formato:	Objeto de conferencia, Objeto de conferencia
Enlaces:	During the last years a lot of projects and lines of research have emerged from different proposals trying to find the best way to reach data integration. Two powerful techniques have appeared separately – ontology and contextual information – in…
Fecha:	2012-10-19
Recurso:	Unversidad Nacional de La Plata

Recurso libre

19.

Mapeando modelos conceituais dimensionais OO para modelos lógicos dimensionais relacionais
Carvalho, Rogerio Atem de - Tanaka, Asterio K. - Colonese, Giovanni

Formato:	Objeto de conferencia, Objeto de conferencia
Enlaces:	The star model, broadly used in data warehouse modeling, is a logical model, so its representation is strongly dependent on the database technology used for its implementation, usually relational. The method recommended for designing a dimensional system would be the…
Fecha:	2012-10-22
Recurso:	Unversidad Nacional de La Plata

Recurso libre

20.

Classifying groupware tools to improve communication in geographically distributed elicitation
Martín, Adriana - Martinez, Claudia - Martínez Carod, Nadina - Aranda, Gabriela N. - Cechich, Alejandra

Formato:	Objeto de conferencia, Objeto de conferencia
Enlaces:	In a scene where stakeholders are geographically distributed, communication presents new challenges for research areas. Considering the characteristics of interpersonal communication and the virtual area where it is carried out, the importance of applying interdisciplinary approaches, such as Cognitive Engineering,…
Fecha:	2012-10-22
Recurso:	Unversidad Nacional de La Plata

Recurso libre

21.

Design of a service-oriented architecture for federated systems
Calegari, Daniel - Viera, Marcos - Motz, Regina

Formato:	Objeto de conferencia, Objeto de conferencia
Enlaces:	A Federated System is a collection of independent, cooperative, possibly heterogeneous and autonomous computer systems (usually database systems) which allows sharing all or some of its data. A Service-oriented Architecture is an application architecture whose functionalities are defined as independent…
Fecha:	2012-10-29
Recurso:	Unversidad Nacional de La Plata

Recurso libre

22.

Entropy and coefficient of variation (CV) as tools for assessing power quality, Entropía y coeficiente de variación (CV) como herramientas para evaluar la calidad de la energía
Estrada J. H. ; Universidad Nacional de Colombia - Sede Manizales - Cano-Plata E. A. ; Universidad Nacional de Colombia -Sede Manizales - Younes-Velosa C. ; Universidad Nacional de Colombia - Sede Manizales - Cortés C. L. ; Universidad Nacional de Colombia - Sede Manizales

Formato:	, , ,
Enlaces:	This paper presents several concepts and techniques for quantifying electric signal entropy and variability for assessing power quality, showing their irregularities, such as the electrical sine wave which delivers power to industry and homes. The paper will review these concepts…
Fecha:	2011-10-31
Recurso:	Ingeniería e investigación

Recurso libre

23.

Editor's Notes
Dooly, Melinda; Dept. Did. Ll, Lit i CCSS, Universitat Autònoma de Barcelona

Formato:	, , Editor's Note, ,
Enlaces:	We begin this issue with our invited authors Dr. Annie Pilote, Dr. Marie-Odile Magnan and Dr. Cynthia Groff (...) three articles are selected papers from the Annual Interuniversity Roundtable on Research in Language and Literature Education (...). Comencem aquest volum…
Fecha:	2011-10-06
Recurso:	Bellaterra: Journal of teaching and Learning Language and Literature

Recurso libre

24.

Operational analysis of electric field mills as lightning warning systems in Colombia, Análisis operacional de molinos de campo eléctrico como sistemas de alerta de tormentas eléctricas en Colombia
Aranguren D. ; Universidad Nacional de Colombia, Bogotá - López J. ; Universidad Nacional de Colombia, Medellín - Pérez E. ; Universidad Nacional de Colombia, Medellín - Herrera J. ; Universidad Nacional de Colombia, Medellín - Aragón L. ; Universidad Nacional de Colombia, Bogotá - Torres H. ; Universidad Nacional de Colombia, Bogotá

Formato:	, , ,
Enlaces:	Electrostatic field measurements taken in Bogotá, Colombia, during thunderstorms in November (the rainy season due to inter-tropical confluence zone over central Colombia) were used to study the performance of an isolated electric field sensor and analyse its most important operational…
Fecha:	2011-10-31
Recurso:	Ingeniería e investigación

Recurso libre

25.

First-year students' conflicts during their construction of an academic identity in English as a foreign language: Implementing Cultural-Historical Activity Theory
Oliva-Girbau, Angels; Dept. Did. Ll, Lit i CCSS, Universitat Autònoma de Barcelona

Formato:	Avaluacions anònimes, Peer-Reviewed Article, Activity Theory, Questionnaires, Evaluaciones anónimas,
Enlaces:	Abstract This paper constructs a theoretical framework that views academic writing from a context-based perspective. The shift from text to context results from implementating the concept of activity system into the academic community, envisioning academia as the sum of the…
Fecha:	2011-10-06
Recurso:	Bellaterra: Journal of teaching and Learning Language and Literature

Recurso libre

26.

Revisión general de las metodologías para el modelado de las incertidumbres en el cálculo del flujo de cargas armónicas, An overview of approaches for modelling uncertainty in harmonic load-flow
Romero A. A. ; IEE-UNSJ - Zini H. C. ; IEE-UNSJ - Ratta G. ; IEE-UNSJ

Formato:	, , ,
Enlaces:	Debido a la creciente utilización de dispositivos basados en electrónica de potencia y de otras cargas de características no lineales, es que la distorsión armónica en las señales de tensión y de corriente es un problema que va en aumento…
Fecha:	2011-10-31
Recurso:	Ingeniería e investigación

Recurso libre

27.

The software architecture role in agile methodologies
Anacleto, Valerio Adrián

Formato:	Objeto de conferencia, Objeto de conferencia
Enlaces:	The software architecture role in agile methodologies is not sufficiently documented or formalized by means of a process consistent with the philosophy. The current work’s contributions are: 1) Defining guidelines to implement architecture practices in an agile way and so…
Fecha:	2012-10-11
Recurso:	Unversidad Nacional de La Plata

Recurso libre

28.

Improving use case definition using enterprise communication networks
Luzuriaga, Juan Manuel

Formato:	Objeto de conferencia, Objeto de conferencia
Enlaces:	Although researchers noted the importance of effective communication among stakeholders, it continues to be a challenge for requirements engineering. Communication can be considered as a management tool since communication allows organisation’s personnel to produce a cohesive enterprise view. In this…
Fecha:	2012-10-26
Recurso:	Unversidad Nacional de La Plata

Recurso libre

29.

Modeling public business processes with interaction protocols in business-to-business relationships
Villareal, Pablo - Chiotti, Omar Juan Alfredo - Salomone, Enrique

Formato:	Objeto de conferencia, Objeto de conferencia
Enlaces:	Today, one of the main challenges of the Business-to-Business (B2B) E-Commerce solutions is to improve the business processes that organizations carry out with their suppliers and customers. B2B relationships require the management of public business processes, which span the organizational…
Fecha:	2012-10-24
Recurso:	Unversidad Nacional de La Plata

Recurso libre

30.

Education and linguistic boundaries in Québec: Student representations and pedagogical reflections from a critical perspective
Pilote, Annie; Dept. Did. Ll, Lit i CCSS, Universitat Autònoma de Barcelona - Magnan, Marie-Odile - Groff, Cynthia

Formato:	Articles convidats, Commissioned, qualitative analysis, interviews, Artículos invitados,
Enlaces:	AbstractRelations between francophones and anglophones in Québec City reflect historical struggles and changing power relations between the groups. Using a constructivist and interactionist approach to identity and ethnicity, we examine the role of English language schools in intergroup relations. We…
Fecha:	2011-10-06
Recurso:	Bellaterra: Journal of teaching and Learning Language and Literature

Recurso libre

31.

Virtual collaboration, ‘perezhivanie’ and teacher learning: A socio-cultural-historical perspective
Antoniadou, Victoria; Dept. Did. Ll, Lit i CCSS, Universitat Autònoma de Barcelona

Formato:	Avaluacions anònimes, Peer-Reviewed Article, Qualitative analysis, Conversation Analysis, Action Relevant Episodes, Evaluaciones anónimas,
Enlaces:	AbstractThis article discusses specific examples of virtually mediated interactions involving two transatlantic groups of student-teachers who engaged in a task-based telecollaborative project for the purposes of a teacher education course. The Vygotskyan framework of learning and development and particularly the…
Fecha:	2011-10-06
Recurso:	Bellaterra: Journal of teaching and Learning Language and Literature

Recurso libre

32.

Editorial, Editorial
Torres Sánchez Horacio ; Universidad Nacional de Colombia - Younes Velosa Camilo ; Universidad Nacional de Colombia - Cano Plata Eduardo Antonio ; Universidad Nacional de Colombia - Pavas Martínez Fabio Andrés ; Universidad Nacional de Colombia

Formato:	, , ,
Enlaces:	Para ver la editorial completa, favor descargar el PDF., For viewing the complete editorial, please download in PDF
Fecha:	2011-10-31
Recurso:	Ingeniería e investigación

Recurso libre

33.

A LEMP Generator-Simulator Circuit, Un circuito generador-simulador de LEMP
Díaz Cadavid Luis Fernando ; Universidad Nacional de Colombia - Cano-Plata Eduardo Antonio ; Universidad Nacional de Colombia - Younes-Velosa Camilo ; Universidad Nacional de Colombia

Formato:	, , ,
Enlaces:	This paper presents a proposal for a LEMP generator-simulator circuit for testing an SDR-detector developed for spectral characterization of lightning, its design and implementation., Este artículo presenta una propuesta de un circuito generador-simulador de LEMP para pruebas de un detector…
Fecha:	2011-10-31
Recurso:	Ingeniería e investigación

Recurso libre

34.

Generalised strategy for implementing the minimum fault reactance based fault location algorithm in real power distribution systems, Estrategia generalizada para la implementación del método de localización de fallas basado en la reactancia mínima de falla en sistemas de distribución reales
Correa-Tapasco E. ; Universidad Tecnológica de Pereira, Colombia - Mora-Flórez J. ; Universidad Tecnológica de Pereira, Colombia - Pérez-Londoño S. ; Universidad Tecnológica de Pereira, Colombia

Formato:	, , ,
Enlaces:	The paper presented here is aimed at proposing a generalised strategy for easily implementing a fault locator in real power distribution systems. The strategy is based on the definition of a fault location method and its successive application along section…
Fecha:	2011-10-31
Recurso:	Ingeniería e investigación

Recurso libre

35.

Hybrid simulation: an active power filter case study, Simulación híbrida: caso de estudio en un filtro activo de potencia
Garcés Y. A. ; Universidad Nacional de Colombia, Sede Manizales - Cano-Plata E. A. ; Universidad Nacional de Colombia, Sede Manizales - Ustariz-Farfan A. J. ; Universidad Nacional de Colombia, Sede Manizales

Formato:	, , ,
Enlaces:	The hybrid simulation concept consisting of a combination of computer simulation and laboratory tests. This approach is a cost effective alternative to physically testing the whole system and allows better understanding of complex coupled systems.This paper describes implementing an active…
Fecha:	2011-10-31
Recurso:	Ingeniería e investigación

Recurso libre

36.

The state of the art and new developments in voltage sag immunity, Estado del arte y nuevos desarrollos en inmunidad frente a huecos de tensión (sags)
Caicedo Joaquín ; Universidad Distrital Francisco José de Caldas - Navarro Felipe ; Universidad Distrital Francisco José de Caldas - Rivas Edwin ; Universidad Distrital Francisco José de Caldas - Santamaría Francisco ; Universidad Distrital Francisco José de Caldas

Formato:	, , ,
Enlaces:	This paper presents the state of the art regarding electrical equipment’s immunity to voltage sags. It deals with immunity analysis and voltage sag generators. An alternative methodology for testing equipment regarding voltage sag is proposed, along with immunity assessment. A…
Fecha:	2011-10-31
Recurso:	Ingeniería e investigación

Recurso libre

37.

Characterising power quality disturbances resulting from current limiting fuse operation, Caracterización de Perturbaciones Eléctricas Causadas por la Operación de Fusibles Limitadores de Corriente
Ortiz S. N. ; Research Group on Electric Power Systems GISEL - Blanco S. J. ; Universidad Industrial de Santander - Ordoñez P. G. ; Universidad Industrial de Santander - Barrera N. V. ; Universidad de Gerona (UdG)

Formato:	, , ,
Enlaces:	This article presents novel and easily implemented tools for characterising electrical disturbances originated by fuse operations. A methodology is described that (with the use of some descriptors) led to identifying electrical disturbances of this kind. The algorithm’s decision thresholds were…
Fecha:	2011-10-31
Recurso:	Ingeniería e investigación

Recurso libre

38.

The effects on radial distribution networks caused by replacing incandescent lamps with compact fluorescent lamps and LEDs, Efectos sobre los circuitos de distribución causados por el reemplazo de lámparas incandescentes con bombillas fluorescentes compactas y LEDs
Blanco Castañeda Ana María ; Tecnische Universität Dresden - Parra Estrella Esperanza ; Universidad Nacional de Colombia

Formato:	, , ,
Enlaces:	Compact fluorescent lamps and high-power lightemitting diodes use an electronic device that injects harmonics into distribution networks, thereby altering power quality levels. This paper shows these lamps’ electrical characterisation and the results of a computer simulation of a radial distribution…
Fecha:	2011-10-31
Recurso:	Ingeniería e investigación

Recurso libre

39.

Applying FBD-power theory to analysing effective lighting devices’ impact on power quality and electric grid efficiency, Aplicación de la Teoría de Potencia FBD al análisis del impacto de los dispositivos eficientes de iluminación sobre la Calidad de la Potencia y la Eficiencia de una red eléctrica
Pavas Andrés ; Universidad Nacional de Colombia - Blanco Ana María ; Teknische Universität Dresden - Parra Estrella ; Universidad Nacional de Colombia

Formato:	, , ,
Enlaces:	Currently the impact of high efficient lighting devices such as compact fluorescent lamps (CFL) and light emitting diodes (LED) is an important concern for the electrotechnical community. This paper makes a contribution towards determining the impact of these devices on…
Fecha:	2011-10-31
Recurso:	Ingeniería e investigación

Recurso libre

40.

Studying and simulating transformer configuration to improve power quality, Estudio y simulación de las configuraciones de transformadores para el mejoramiento de la calidad de energía
Peña Huaringa Oscar J. ; Universidad Nacional de Ingeniería - Lima

Formato:	, , ,
Enlaces:	This paper presents a study and simulation of transformer configurations to improve power quality; it provides theoretical support based on the expansion of the Fourier series and analysis of symmetrical components. A test system was set up in the laboratory,…
Fecha:	2011-10-31
Recurso:	Ingeniería e investigación

Recurso libre

41.

Power quality problems caused by termites on 138-kV underground cables, Problemas de calidad de energía causados por termitas en cables subterráneos de 138kV
Fuscaldi Romeu ; Power Utility of Minas Gerais (CEMIG) - Silveira Fernando H. ; Department of Electrical Engineering, UFMG - De Conti Alberto ; Department of Electrical Engineering, UFMG - Visacro Silvério ; Department of Electrical Engineering, UFMG

Formato:	, , ,
Enlaces:	This paper discusses problems found in the operation of underground cables in the transmission system of CEMIG, with emphasis on insulation failures caused by termites. This problem has been the source of many scheduled and nonscheduled interruptions in later years,…
Fecha:	2011-10-31
Recurso:	Ingeniería e investigación

Recurso libre

42.

Editorial: Universidad de Investigación, Editorial: A model research university
Hernández Losada Diego Fernando ; Universidad Nacional de Colombia, Bogotá, D.C.

Formato:	, , ,
Enlaces:	Para ver la editorial completa, favor descargar el PDF., To view the complete editorial please unload PDF
Fecha:	2011-12-10
Recurso:	Ingeniería e investigación

Recurso libre

43.

Comportamiento de la interfaz concreto-epoxi-FRP utilizando la teoría de mezclas serie/paralelo, Behaviour of the interface between concrete and FRP using serial/parallel mixing theory
Molina Maritzabel ; Universidad Nacional de Colombia - Cruz Juan José ; Universidad Autónoma de Chiapas - Oller Sergio ; Universidad Politécnica de Cataluña - Barbat Alex H. ; Universidad Politécnica de Cataluña - Gil Lluís ; Universidad Politécnica de Cataluña

Formato:	, , ,
Enlaces:	Diversos estudios experimentales han mostrado que uno de los factores que afectan el comportamiento de estructuras de concreto externamente reforzadas con Fiberglass Reinforced Plastic (FRP, por sus siglas en inglés) es la adherencia entre el concreto y el FRP. En…
Fecha:	2011-12-10
Recurso:	Ingeniería e investigación

Recurso libre

44.

Análisis de los fenómenos de transferencia en el proceso de evaporación osmótica, Analysing transfer phenomena in osmotic evaporation
Forero Longas Freddy ; Universidad del Valle - Vélez Pasos Carlos Antonio ; Universidad del Valle

Formato:	, , ,
Enlaces:	La evaporación osmótica es una modificación de los procesos tradicionales que utilizan membranas; mediante un diferencial de presión de vapor, producido por una solución de extracción fuertemente concentrada, se transfiere agua solo en forma de vapor a través de una…
Fecha:	2011-12-10
Recurso:	Ingeniería e investigación

Recurso libre

45.

Recomendaciones para el diseño de la puesta a tierra en los sistemas de protección contra rayos, Recommendations for grounding systems in lightning protection systems
Montaña Johny ; Universidad del Norte

Formato:	, , ,
Enlaces:	Este artículo presenta algunas recomendaciones prácticas para el diseño del sistema de puesta a tierra, el cual hace parte del sistema integral de protección contra rayos. Estas recomendaciones son el resultado de los análisis de un software académico que se…
Fecha:	2011-10-31
Recurso:	Ingeniería e investigación

Recurso libre

46.

Mapas tridimensionales de pérdida de la calidad de potencia basados en la teoría tensorial de la potencia, Three-dimensional maps of power quality loss based in the power tensor theory
Ustariz-Farfan A. J. ; Universidad Nacional de Colombia, Sede Manizales - Cano-Plata E. A. ; Universidad Nacional de Colombia, Sede Manizales - Tacca H. E. ; Universidad de Buenos Aires

Formato:	, , ,
Enlaces:	Este artículo presenta los resultados de una investigación relacionada con el desarrollo de una herramienta de visualización flexible, para ser usado principalmente por los operadores del sistema eléctrico. La investigación se centró en una técnica para evaluar el deterioro de…
Fecha:	2011-10-31
Recurso:	Ingeniería e investigación

Recurso libre

47.

Methodology for assessing the impacts of distributed generation interconnection, Metodología para evaluar los impactos de interconectar generación en los sistemas de distribución
Luna Luis E. ; Universidad Nacional de Colombia - Parra Estrella E. ; Universidad Nacional de Colombia

Formato:	, , ,
Enlaces:	This paper proposes a methodology for identifying and assessing the impact of distributed generation interconnection on distribution systems using Monte Carlo techniques. This methodology consists of two analysis schemes: a technical analysis, which evaluates the reliability conditions of the distribution…
Fecha:	2011-10-31
Recurso:	Ingeniería e investigación

Recurso libre

48.

A Study of incentives to increase the use of DG in Colombia based on a System Dynamics modeling, Estudio de incentivos para incrementar el uso de GD en Colombia basado en un modelado en dinámica de sistemas
Carvajal-Quintero S. B. ; Universidad Nacional de Colombia, Sede Manizales - Arango-Manrique A ; CIDET Corporación Centro de Investigación y Desarrollo Tecnológico del Sector Eléctrico - Arango-Aramburo S ; Universidad Nacional de Colombia, Sede Medellín - Yones-Velosa C ; Universidad Nacional de Colombia, Sede Manizales

Formato:	, , ,
Enlaces:	This paper presents a study regarding the introduction of distributed generation (DG) within the Colombian power system by considering commercial, environmental and technical incentives. Environmental and commercial incentives were quantified by studying international precedents for implementing DG. Technical incentives were…
Fecha:	2011-10-31
Recurso:	Ingeniería e investigación

Recurso libre

49.

Implementation of an evolutionary algorithm in planning investment in a power distribution system, Implementación de un Algoritmo Evolutivo en la Planeación de Inversiones de un Sistema de Distribución de Energía
García Montoya Carlos Andrés ; Universidad de Antioquia - Mendoza Toro Steiner ; Área de Distribución Eléctrica Centro, Empresas Públicas de Medellín

Formato:	, , ,
Enlaces:	The definition of an investment plan to implement in a distribution power system, is a task that constantly faced by utilities. This work presents a methodology for determining the investment plan for a distribution power system under a shortterm, using…
Fecha:	2011-10-31
Recurso:	Ingeniería e investigación

Recurso libre

50.

Estimation of voltage sags patterns with k-means algorithm and clustering of fault zones in high and medium voltage grids, Estimación de patrones de hundimientos en tensión con el algoritmo k-means y agrupación de zonas de falla en redes de alta y media tensión
Romero Miguel ; Universidad Nacional de Colombia - Gallego Luis ; Universidad Nacional de Colombia - Pavas Andrés ; Universidad Nacional de Colombia

Formato:	, , ,
Enlaces:	This paper proposes k-means clustering algorithm to identify voltage sags patterns and group fault zones with similar impact in high and medium voltage electric. The proposed methodology comprises three stages. First, network modeling and faults simulation were performed in order…
Fecha:	2011-10-31
Recurso:	Ingeniería e investigación