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Aproximadamente 165 registro(s) hasta el momento: (datos)

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Recurso libre

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

Fully dynamic and memory-adaptative spatial approximation trees
Arroyuelo, Diego - Navarro, Gonzalo - Reyes, Nora Susana

Formato:	Objeto de conferencia, Objeto de conferencia
Enlaces:	Hybrid dynamic spatial approximation trees are recently proposed data structures for searching in metric spaces, based on combining the concepts of spatial approximation and pivot based algorithms. These data structures are hybrid schemes, with the full features of dynamic spatial…
Fecha:	2012-10-24
Recurso:	Unversidad Nacional de La Plata

Recurso libre

Precompilation: an alternative approach to provide native generic programming support in C++
Gutson, Daniel F. - Alarcón, Román

Formato:	Objeto de conferencia, Objeto de conferencia
Enlaces:	In C++, Generative Programming (GP) techniques are being used to generate highly customized and optimized products automatically manufactured at compile-time; to provide these functionalities increasing compiling power is required. This work presents an improved compilation model for C++ by adding…
Fecha:	2012-10-29
Recurso:	Unversidad Nacional de La Plata

Recurso libre

Tool support for verifying applications using object-oriented patterns
Aranda, Gabriela N. - Flores, Andrés P. - Buccella, Agustina - Reynoso, Luis A.

Formato:	Objeto de conferencia, Objeto de conferencia
Enlaces:	Applying design patterns is considered a helpful technique for designing software systems. Patterns description, however, results not sufficiently precise providing a weak understanding and making it difficult to be certain when a pattern is being used correctly. We have formally…
Fecha:	2012-10-02
Recurso:	Unversidad Nacional de La Plata

Recurso libre

Hierarchical self-refining consensus architectures and soft consensus functions for robust multimedia clustering, Arquitecturas de consenso jerárquicas auto-refinables y funciones difusas de consenso para agrupamiento robusto de datos multimedia
Sevillano Domínguez, Xavier

Formato:	info:eu-repo/semantics/article
Enlaces:	Tesis doctoral en Tecnologías de la Información y las Comunicaciones y su Gestión. El acto de defensa de tesis tuvo lugar en Barcelona en Junio de 2009 ante el tribunal formado por los doctores Paolo Rosso (Univ. Politécnica de Valencia),…
Fecha:	2010-05-04
Recurso:	RUA Docencia

Recurso libre

Gestão integrada da água e perfis de usuários: proposta metodológica a partir da sociologia quantitativa, Gestión integral del agua y perfiles de usuarios: propuesta metodológica desde la sociología cuantitativa, A sociological methodology for an integrated water management and user profiles: a quantitative proposal
Aledo Tur, Antonio - Ortiz Noguera, Guadalupe - Domínguez Gómez, José Andrés

Formato:	info:eu-repo/semantics/article
Enlaces:	Este artículo propone que para una eficaz gestión de los recursos hídricos es también necesario incluir variables sociológicas que ayuden a comprender y explicar la concepción y comportamiento social en torno al agua. Con esta intención se presenta una metodología…
Fecha:	2010-01-11
Recurso:	RUA Docencia

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.

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

11.

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

12.

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

13.

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

14.

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

15.

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

16.

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

17.

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

18.

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

19.

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

20.

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

21.

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

22.

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

23.

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

24.

The genus Ixodes (Acari: Ixodidae) in Mexico: adult identification keys, diagnoses, hosts, and distribution, El género Ixodes (Acari: Ixodidae) en México: claves de identificación para adultos, diagnosis, huéspedes y distribución
Guzmán-Cornejo, Carmen - Robbins, Richard G.

Formato:
Enlaces:	Identification keys, diagnoses, hosts, and distribution data are provided for adults of the 26 species of Ixodes known from Mexico. Data are from specimens deposited in the Colección Nacional de Ácaros (CNAC), Instituto de Biología, Universidad Nacional Autónoma de México,…
Fecha:	2010-10-22
Recurso:	Revistas UNAM

Recurso libre

25.

Collaborative problem solving in virtual communities of practice
Casalini, María Clara - Estevez, Elsa Clara - Janowski, Thomas

Formato:	Objeto de conferencia, Objeto de conferencia
Enlaces:	The paper presents a case study illustrating a collaborative problem solving process in Virtual Communities of Practice. The process relies on the existence of an underlying shared knowledge base – a repository of resources, and is carried out collaboratively by…
Fecha:	2012-10-09
Recurso:	Unversidad Nacional de La Plata

Recurso libre

26.

Defining the proxy design pattern using UML profile
Garis, Ana Gabriela - Riesco, Daniel Eduardo - Montejano, Germán Antonio

Formato:	Objeto de conferencia, Objeto de conferencia
Enlaces:	Today software solutions are often modeled using UML. Design patterns are frequently instantiated within these particular solutions. However, in several situations, UML is not expressive enough to describe them properly. UML profiles extend UML syntax and semantic in order to…
Fecha:	2012-10-09
Recurso:	Unversidad Nacional de La Plata

Recurso libre

27.

Model checking RAISE applicative specifications
Perna, Juan I. - George, Chris W.

Formato:	Objeto de conferencia, Objeto de conferencia
Enlaces:	Ensuring the correctness of a given software component has become a crucial aspect in Software Engineering and the Model Checking technique provides a fully automated way to achieve this goal. In particular, the usage of Model Checking in formal languages…
Fecha:	2012-10-09
Recurso:	Unversidad Nacional de La Plata

Recurso libre

28.

Use of asynchronous JavaScript and XML for comparative market analysis
Cáseres, Germán - Delía, Lisandro - Thomas, Pablo Javier - Ramón, Hugo Dionisio - Bertone, Rodolfo Alfredo

Formato:	Objeto de conferencia, Objeto de conferencia
Enlaces:	Generally, the interactivity provided by web applications is carried out through surfing, as a result of a server’s response at the request of a workstation. This is an essential characteristic of this type of software, although in some circumstances it…
Fecha:	2012-10-15
Recurso:	Unversidad Nacional de La Plata

Recurso libre

29.

Classifying software requirement prioritization approaches
Martínez Carod, Nadina - Cechich, Alejandra

Formato:	Objeto de conferencia, Objeto de conferencia
Enlaces:	Defining software requirements is a complex and difficult process, which often leads to costly project failures. Requirements emerge from a collaborative and interactive negotiation process that involves heterogeneous stakeholders (people involved in an elicitation process such as users, analysts, developers,…
Fecha:	2012-10-26
Recurso:	Unversidad Nacional de La Plata

Recurso libre

30.

CCMini: a prototype of certifying compiler based on annotated abstract syntax trees
Bavera, Francisco - Nordio, Martín - Medel, Ricardo - Aguirre, Jorge - Baum, Gabriel Alfredo

Formato:	Objeto de conferencia, Objeto de conferencia
Enlaces:	Certifying compilers use static information of a program to verify that it complies with certain security properties and to generate certified code. To do so, those compilers translate the source program into an annotated program written in some intermediate language.…
Fecha:	2012-10-26
Recurso:	Unversidad Nacional de La Plata

Recurso libre

31.

Semantic document indexing in ontology-driven organizational memories
Ale, María Alejandra - Galli, María Rosa - Chiotti, Omar Juan Alfredo

Formato:	Objeto de conferencia, Objeto de conferencia
Enlaces:	Effective document retrieval using domain knowledge and semantics is one of the major challenges in Information Retrieval. Over the last years, there has been a growing interest in ontologies as an artifact for human knowledge representation and a critical component…
Fecha:	2012-10-29
Recurso:	Unversidad Nacional de La Plata

Recurso libre

32.

A UML profile to model classifier refinements
Correa, Natalia - Giandini, Roxana Silvia - Pons, Claudia

Formato:	Objeto de conferencia, Objeto de conferencia
Enlaces:	The refinement technique allows us to capture the relationship between specification and implementation in software developments. The precise documentation of the refinement relations hip makes it possible the traceability of the requirements through the refinement steps. Unfortunately, the standard modelling…
Fecha:	2012-10-29
Recurso:	Unversidad Nacional de La Plata

Recurso libre

33.

Tower generic data processing
Necco, Claudia Mónica - Nuno Olivera, J.

Formato:	Objeto de conferencia, Objeto de conferencia
Enlaces:	Many aspects of data processing are functional in nature and can take advantage of recent developments in the area of functional programming and calculi. The work described in this paper is an attempt to contribute to this line of thought,…
Fecha:	2012-10-29
Recurso:	Unversidad Nacional de La Plata

Recurso libre

34.

Extending message-oriented middleware
Estevez, Elsa Clara - Janowski, Thomas

Formato:	Objeto de conferencia, Objeto de conferencia
Enlaces:	Different types of middleware exist to facilitate the integration of software running on heterogeneous computing platforms. Message Oriented Middleware (MOM), for instance, enables the interaction between heterogeneous applications by exchanging packets of structured data (messages) through communication channels. The core…
Fecha:	2012-10-29
Recurso:	Unversidad Nacional de La Plata

Recurso libre

35.

Management model for measurement infrastructure
Battisti, Gerson - Tarouco, Liane M. R. - Granville, Lisandro

Formato:	Objeto de conferencia, Objeto de conferencia
Enlaces:	The evaluation of metric of performance is useful in the evaluation of protocols, in the improvement of applications, in the content choice, among others. The obtaining of these metrics, it continues being a complex task because most of the time…
Fecha:	2012-10-29
Recurso:	Unversidad Nacional de La Plata

Recurso libre

36.

Software process improvement behavior of small and medium organizations in Argentina
Colla, Pedro E. - Montagna, Jorge Marcelo

Formato:	Objeto de conferencia, Objeto de conferencia
Enlaces:	Este artículo reporta el trabajo de investigación realizado en base a datos extraídos de la Encuesta Anual realizada por la CESSI durante el año 2007 entre organizaciones dedicadas al desarrollo de Software en Argentina. Si bien la temática de mejora…
Fecha:	2012-10-02
Recurso:	Unversidad Nacional de La Plata

Recurso libre

37.

A language processing tool for program comprehension
Berón, Mario - Henriques, Pedro Rangel - Varanda Pereira, Maria João - Uzal, Roberto - Montejano, Germán Antonio

Formato:	Objeto de conferencia, Objeto de conferencia
Enlaces:	Program Comprehension is a Software Engineering discipline which aims to understand computer code written in a high-level programming language. Program Comprehension is useful for reuse, inspection, maintenance, reverse engineering and many other activities in the context of Software Engineering. In…
Fecha:	2012-10-05
Recurso:	Unversidad Nacional de La Plata

Recurso libre

38.

Design criteria for the development of an institutional learning object repository
Godoy, Roberto - Minni, Hugo - Zarza, Gonzalo - Loyarte, Horacio

Formato:	Objeto de conferencia, Objeto de conferencia
Enlaces:	The production of educational contents in academic environments has been traditionally developed without an integral plan which allows their adequate distribution and access. In addition, it produces effort duplication and misuse of resources. As a possible solution, this work proposes…
Fecha:	2012-10-16
Recurso:	Unversidad Nacional de La Plata

Recurso libre

39.

Requirements elicitation applied to electronic voting system
Thomas, Pablo Javier - Oliveros, Alejandro

Formato:	Objeto de conferencia, Objeto de conferencia
Enlaces:	Nowadays, technology has become the key element to carry out the management, organization and fulfillment of the electoral process. The electoral process should be understood as the actions that entail the making of the electoral roll, citizen identification, the act…
Fecha:	2012-10-26
Recurso:	Unversidad Nacional de La Plata

Recurso libre

40.

A software product line experience
Andriano, Natalia Valeria - Kirch, Jorge - Zibecchi, Mariano

Formato:	Objeto de conferencia, Objeto de conferencia
Enlaces:	Previous work in software product lines showed an increment of up to 10 times in productivity and product quality [SEI Prod_Line]; because of this, the software product line approach is critical for the success of a development project including a…
Fecha:	2012-10-29
Recurso:	Unversidad Nacional de La Plata

Recurso libre

41.

A managerial framework for an electronic government procurement project: complex software projects management fundamentals
Uzal, Roberto - Montejano, Germán Antonio - Riesco, Daniel Eduardo - Uzal, Javier

Formato:	Objeto de conferencia, Objeto de conferencia
Enlaces:	An Electronic Government Procurement (e-GP) project, as most of complex software systems development and implantation, requires sophisticated and strong managerial concepts and skills. So, an effective and consistent managerial framework is needed. Traditional project management models, that propose a series…
Fecha:	2012-10-29
Recurso:	Unversidad Nacional de La Plata

Recurso libre

42.

A wrapper&mediator prototype for web data warehouses
Giaudrone, Verónica - Guerra, Marcelo - Vaccaro, Marcelo - Motz, Regina - Marotta, Adriana

Formato:	Objeto de conferencia, Objeto de conferencia
Enlaces:	There is a lot of information published on the Web that can be useful for decision-making. The work reported in this paper focuses on how to extract and integrate this information in order to construct a Data Warehouse that makes…
Fecha:	2012-10-29
Recurso:	Unversidad Nacional de La Plata

Recurso libre

43.

Stakeholder selection for business processes support systems in interorganizational environments
Ballejos, Luciana C. - Montagna, Jorge Marcelo

Formato:	Objeto de conferencia, Objeto de conferencia
Enlaces:	This work presents a methodology with basic steps to follow before developing Interorganizational Information Systems (IOSs), which constitute the support for the execution of business processes (BPs) in new structural forms made up of various organizations, called Interorganizational Networks (IONs).…
Fecha:	2012-10-29
Recurso:	Unversidad Nacional de La Plata

Recurso libre

44.

Identifying cognitive aspects to improve business process reengineering
Martín, Adriana - Cechich, Alejandra

Formato:	Objeto de conferencia, Objeto de conferencia
Enlaces:	Knowledge-intensive processes are widely used to recover from errors, handle exceptional cases and complaints, and to improve or adapt a process itself. In this context, evolved Business-Process Reengineering (BPR) techniques are changing to give some answers to this reality. In…
Fecha:	2012-10-12
Recurso:	Unversidad Nacional de La Plata

Recurso libre

45.

Using fuzzy sets to analyse personal preferences on groupware tools
Aranda, Gabriela N. - Cechich, Alejandra - Vizcaíno, Aurora - Castro-Schez, José J.

Formato:	Objeto de conferencia, Objeto de conferencia
Enlaces:	When stakeholders are geographically distributed communication presents new challenges for software engineering community. In order to improve communication between stakeholders, we have previously proposed to apply learning style models to characterise the way people interact. In this work we enhance…
Fecha:	2012-10-12
Recurso:	Unversidad Nacional de La Plata

Recurso libre

46.

La función de un estímulo como reforzador depende de la estimulación concurrente, The function of a stimulus as a reinforcer depends on concurrent stimulation
Bruner, Carlos A. - Roca, Alicia

Formato:	,
Enlaces:	En la primera parte de este trabajo se describen algunos experimentos sobre el Beber Inducido por el Programa de Reforzamiento (BIP) con ratas. Los resultados de estos experimentos se pueden clasificar conforme a dos enfoques diferentes. Los datos del primer…
Fecha:	2009-12-10
Recurso:	Acta Comportamentalia: Revista Latina de Análisis del Comportamiento

Recurso libre

47.

A business-oriented approach to data warehouse development, Enfoque orientado al negocio para el desarrollo del almacén de datos
Cravero Leal, Ania - Mazón López, José Norberto - Trujillo Mondéjar, Juan Carlos

Formato:	info:eu-repo/semantics/article
Enlaces:	Several surveys have indicated that many data warehouses fail to meet business objectives or are outright failures. One reason for this is that requirement engineering is typically overlooked in real projects. This paper addresses data warehouse design from a business…
Fecha:	2013-10-22
Recurso:	RUA Docencia

Recurso libre

48.

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

49.

Evaluation of 3D image-treatment algorithms applied to optical-sectioning microscopy
Vicente, Nathalie B. - Diaz Zamboni, Javier E. - Adur, Javier F. - Casco, Víctor

Formato:	Objeto de conferencia, Objeto de conferencia
Enlaces:	La información extraída de especimenes biológicos es inherentemente tridimensional. Los datos tridimensionales (3D) permiten un mejor entendimiento de las estructuras y los eventos biológicos, comparados con sus proyecciones bidimensionales (2D), aunque a veces son más difíciles de manejar. Esto explica…
Fecha:	2012-10-15
Recurso:	Unversidad Nacional de La Plata

Recurso libre

50.

Skeletonization of sparse shapes using dynamic competitive neural networks
Hasperué, Waldo - Corbalán, Leonardo - Lanzarini, Laura Cristina - Bria, Oscar N.

Formato:	Objeto de conferencia, Objeto de conferencia
Enlaces:	La detección de regiones y objetos en imágenes digitales es un tema de suma importancia en la resolución de numerosos problemas correspondientes al área de reconocimiento de patrones. En esta dirección los algoritmos de esqueletización son una herramienta muy utilizada…
Fecha:	2012-10-19
Recurso:	Unversidad Nacional de La Plata

Recurso libre

51.

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

52.

A methodology for software documentation
Torres Júnior, Roberto Dias - Ahlert, Hubert

Formato:	Objeto de conferencia, Objeto de conferencia
Enlaces:	With the growing complexity of window based software and the use of object-oriented, the development of software is getting more complex than ever. Based on that, this article intends to present a methodology for software documentation and to analyze our…
Fecha:	2012-11-02
Recurso:	Unversidad Nacional de La Plata

Recurso libre

53.

Hazus application to Oslo municipality: data description
Molina Palacios, Sergio - Lindholm, Conrad D.

Formato:	info:eu-repo/semantics/workingPaper
Enlaces:	In order to apply HAZUS methodology to a real seismic risk study outside USA, the Oslo municipality was chosen as study region. The civil institutions were asked for neccesary information and we were provided with different ASCII and Arcview files…
Fecha:	2007-10-30
Recurso:	RUA Docencia

Recurso libre

54.

Type A Behavior Pattern in workers of San Luis city, its relationship to dysfunctional attitudes, Patrón de Conducta tipo A, su relación con variables cognitivas
Garcia, Horacio Daniel; Facultad de Psicología. Universidad Nacional de San Luis - Fantin, Marina Beatriz; Facultad de Psicología. Universidad Nacional de San Luis

Formato:	,
Enlaces:	Work constitutes a relevant sphere in life: levels of competence, aptness, responsibility and productivity press on the worker in a pursuit of self-improvement. This research attempts to investigate the prevalence of Type A behavior pattern and dysfunctional attitudes, and the…
Fecha:	2013-10-02
Recurso:	Revistas UNAM

Recurso libre

55.

The function of a stimulus as a reinforcer depends on concurrent stimulation, La función de un estímulo como reforzador depende de la estimulación concurrente
Bruner, Carlos A. - Roca, Alicia

Formato:	,
Enlaces:	Some experiments on Schedule-Induced Drinking (SID) in rats are described in the first part of this paper. The results from these experiments can be classified according to two different approaches. Data from the first approach show that the water-producing response…
Fecha:	2009-12-10
Recurso:	Revistas UNAM

Recurso libre

56.

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

57.

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

58.

Web 2.0 i difusió de la recerca: ressenya del seminari, Web 2.0 and diffusion of research: seminar review, Web 2.0 y difusión de la investigación: reseña del seminario
Peña-López, Ismael - Córcoles, César Pablo

Formato:	info:eu-repo/semantics/article, info:eu-repo/semantics/publishedVersion, , ,
Enlaces:	Ressenya del seminari organitzat l'abril del 2006, en el marc de la càtedra UNESCO d'E-learning de la UOC, sobre les anomenades aplicacions Web 2.0 i les noves maneres de treballar en el camp de la recerca, l'educació i la difusió…
Fecha:	2006-10-01
Recurso:	IDP: Revista de internet, derecho y política

Recurso libre

59.

Formato:	info:eu-repo/semantics/article, info:eu-repo/semantics/publishedVersion, , ,
Enlaces:	Ressenya del seminari organitzat l'abril del 2006, en el marc de la càtedra UNESCO d'E-learning de la UOC, sobre les anomenades aplicacions Web 2.0 i les noves maneres de treballar en el camp de la recerca, l'educació i la difusió…
Fecha:	2006-10-01
Recurso:	IDP: Revista de internet, derecho y política

Recurso libre

60.

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

61.

Analysis of the futsal coaching´s commentaries and the moment that they occur during the practices and competition in the mirim categories, Análisis de los comentarios de entrenadores y momento en que ocurren en los entrenamientos y competencias de futsal de categoría infantil
Dimas de Oliveira, Sergio - de Souza, Sílvia Regina

Formato:	,
Enlaces:	The objective of this research was to evaluate the nature and the amount of commentaries made by two Futsal´s coaches during the practices and competitive games and the moment of the game which the commentaries were made by them. Two…
Fecha:	2009-12-10
Recurso:	Acta Comportamentalia: Revista Latina de Análisis del Comportamiento

Recurso libre

62.

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

63.

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

64.

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

65.

Taking advantages of ontology and contexts to determine similarity of data
Buccella, Agustina - Cechich, Alejandra - Rodríguez Brisaboa, Nieves

Formato:	Objeto de conferencia, Objeto de conferencia
Enlaces:	Data integration is the process of unifying data sharing some common semantics but are originated from unrelated sources. In our work we consider these sources are autonomous, heterogeneous and they are physically distributed. These three characteristics make the integration task…
Fecha:	2012-10-11
Recurso:	Unversidad Nacional de La Plata

Recurso libre

66.

EMTPL and its relation to first order logic
Cobo, María Laura - Falappa, Marcelo Alejandro

Formato:	Objeto de conferencia, Objeto de conferencia
Enlaces:	Time and change are notions that seems unavoidable in some areas of work and investigation, languages that can deal with these notions are necessary. At the same time, methods for a proper time handling are quite complex, mainly because problem’s…
Fecha:	2012-10-12
Recurso:	Unversidad Nacional de La Plata

Recurso libre

67.

An extension of ArgoUML for the incorporation of profiles
Pryor, Jane - Marcos, Claudia A. - Belloni, Edgardo A.

Formato:	Objeto de conferencia, Objeto de conferencia
Enlaces:	The Unified Modeling Language (UML) is a language for visualizing, specifying, constructing, and documenting the artifacts of a software-intensive system. UML supports the most typical software modeling problems; however, due to the diversity of software development domains, there may be…
Fecha:	2012-10-12
Recurso:	Unversidad Nacional de La Plata

Recurso libre

68.

Characterizing semantic web services
Moyano, Marcelo - Buccella, Agustina - Cechich, Alejandra - Estevez, Elsa Clara

Formato:	Objeto de conferencia, Objeto de conferencia
Enlaces:	Semantic Web is an extension of the current web in which data contained in the web documents are machine-understandable. On the other hand, Web Services provide a new model of the web in which sites exchange dynamic information on demand.
Fecha:	2012-10-12
Recurso:	Unversidad Nacional de La Plata

Recurso libre

69.

Building dynamic WAP applications using UWE
Soto, Ricardo - Rodríguez, Nibaldo - Palma, Wenceslao

Formato:	Objeto de conferencia, Objeto de conferencia
Enlaces:	The great advance of the communications and the importance gained by the mobile systems have increased the development of WAP (Wireless Application Protocol) applications, nevertheless at the present time do not exist methodologies specifically designed for the WAP applications development…
Fecha:	2012-10-12
Recurso:	Unversidad Nacional de La Plata

Recurso libre

70.

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

71.

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

72.

Dynamic selection of suitable pivots for similarity search in metric spaces
Deco, Claudia - Salvetti, Mariano - Reyes, Nora Susana - Bender, Cristina

Formato:	Objeto de conferencia, Objeto de conferencia
Enlaces:	This paper presents a data structure based on Sparse Spatial Selection (SSS) for similarity searching. An algorithm that tries periodically to adjust pivots to the use of database index is presented. This index is dynamic. In this way, it is…
Fecha:	2012-09-19
Recurso:	Unversidad Nacional de La Plata

Recurso libre

73.

Proposal of an ontology based web search engine
Deco, Claudia - Bender, Cristina - Ponce, Adrián

Formato:	Objeto de conferencia, Objeto de conferencia
Enlaces:	When users search for information in a web site, sometimes they do not get what they want. Assuming that the scope where the search take place works fine, there are some problems caused by the way the user interact with…
Fecha:	2012-10-01
Recurso:	Unversidad Nacional de La Plata

Recurso libre

74.

Semantic Interoperability Middleware – enabling collaborative networks in public sector
Sanchez, Alejandro - Estevez, Elsa Clara - Janowski, Thomas - Ojo, Adegboyega

Formato:	Objeto de conferencia, Objeto de conferencia
Enlaces:	Electronic Government initiatives, such as seamless public services delivered at one-stop government portals, require establishing collaborative networks among public- and private-sector organizations. However, semantic interoperability problems emerge as these organizations may differ in the terms and meanings they use to…
Fecha:	2012-10-03
Recurso:	Unversidad Nacional de La Plata

Recurso libre

75.

Toward metrics and model validation in web-site QEM
Olsina Santos, Luis Antonio - Pons, Claudia - Rossi, Gustavo Héctor

Formato:	Objeto de conferencia, Objeto de conferencia
Enlaces:	In this work, a conceptual framework and the associated strategies for metrics and model validation are analyzed regarding website measurement and evaluation. Particularly, we have conducted three case studies in different Web domains in order to evaluate and compare the…
Fecha:	2012-11-02
Recurso:	Unversidad Nacional de La Plata

Recurso libre

76.

A formal model for some behavioural features of analysis patterns
Buccella, Agustina - Cechich, Alejandra

Formato:	Objeto de conferencia, Objeto de conferencia
Enlaces:	It is commonly said that a pattern has four essential parts: a statement of the context where the pattern is useful, the problem that the pattern addresses, the forces that play in forming a solution, and the solution that resolves…
Fecha:	2012-11-02
Recurso:	Unversidad Nacional de La Plata

Recurso libre

77.

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

78.

Knowledge discovery based on computational taxonomy and intelligent data mining
Perichinsky, Gregorio - García Martínez, Ramón - Proto, Araceli

Formato:	Objeto de conferencia, Objeto de conferencia
Enlaces:	This study investigates an approach of knowledge discovery and data mining in insufficient databases. An application of Computational Taxonomy analysis demonstrates that the approach is effective in such a data mining process. The approach is characterized by the use of…
Fecha:	2012-11-06
Recurso:	Unversidad Nacional de La Plata

Recurso libre

79.

Relaciones filogenéticas de la subtribu Oncidiinae (Orchidaceae) inferidas a partir de caracteres estructurales y secuencias de ADN (ITS y matK): un enfoque combinado, Phylogenetic relationships of the subtribe Oncidiinae (Orchidaceae) inferred from structural and DNA sequences (matK, ITS): a combined approach
Sandoval-Zapotitla, Estela - García-Cruz, Javier - Terrazas, Teresa - Villaseñor, José Luis

Formato:
Enlaces:	Para conocer el valor que los caracteres estructurales tienen para la reconstrucción filogenética de la subtribu Oncidiinae se realizó un análisis de parsimonia combinado con base en datos anatómico foliares, morfológicos y secuencias de ADN de las regiones matK e…
Fecha:	2010-10-22
Recurso:	Revistas UNAM

Recurso libre

80.

Concentration of PM10 in the Metropolitan Area of Costa Rica, Central America: Chemical composition and potential sources, Concentration of PM10 in the Metropolitan Area of Costa Rica, Central America: Chemical composition and potential sources
HERRERA MURILLO, J. - ROJAS MARÍN, J. F. - RODRÍGUEZ ROMÁN, S. - BAEZ PEDRAJO, A. P.

Formato:	,
Enlaces:	Se realizaron mediciones de metales e iones inorgánicos presentes en muestras de PM10 colectadas en cinco sitios distribuidos en las ciudades de San José, Heredia y Belén. Las muestras fueron colectadas con muestreadores de alto volumen marca Thermo Andersen sobre…
Fecha:	2010-10-01
Recurso:	Revistas UNAM

Recurso libre

81.

Synthetic generation of monthly sea surface temperatures in "El Niño" regions by means of the Fiering-Svanidze method, Synthetic generation of monthly sea surface temperatures in "El Niño" regions by means of the Fiering-Svanidze method
ARGANIS JUÁREZ, M. L. - DOMÍNGUEZ MORA, R. - FUENTES MARILES, G. - GUTIÉRREZ-LÓPEZ, A.

Formato:	,
Enlaces:	Los métodos tradicionales del tipo ARMA(p,q), Fiering, Svanidze entre otros se han usado con éxito en la estimación de series de tiempo hidrológicas tales como escurrimientos, volúmenes de ingreso a embalses, series con componente invernal, precipitación; sin embargo su aplicación…
Fecha:	2010-10-01
Recurso:	Revistas UNAM

Recurso libre

82.

Evaluation of urban-rural bioclimatic comfort differences over a ten-year period in the sample of Erzincan city reconstructed after a heavy earthquake, Evaluation of urban-rural bioclimatic comfort differences over a ten-year period in the sample of Erzincan city reconstructed after a heavy earthquake
TOY, S. - YILMAZ, S.

Formato:	,
Enlaces:	En este trabajo se trató de determinar el grado de los efectos de una ciudad de tamaño mediano bien planeada, Erzican, en Turquía, sobre las condiciones de confort térmico humano. Para lo anterior se compararon los resultados de los cálculos…
Fecha:	2010-10-01
Recurso:	Revistas UNAM

Recurso libre

83.

Optical properties of aerosols: southern México City, Optical properties of aerosols: southern México City
GARCÍA, L. Q. - CASTRO, T. - SAAVEDRA, M. I. - MARTINEZ-ARROYO, M. A.

Formato:	,
Enlaces:	Se obtuvieron medidas de absorción (σa) a 500 nm, esparcimiento (σs) a 530 nm y concentración de partículas (0.01 a 3 μm) en el Sur de la Cd. de México durante las temporadas de secas (febrero-mayo) y lluvias (junio-agosto) del…
Fecha:	2010-10-01
Recurso:	Revistas UNAM

Recurso libre

84.

About the Subtle and the Manifest in the ATLG scale, Sobre lo sutil y manifiesto en la escala ATLG
Moral de la Rubia, José; Universidad Nacional Autónoma de México - Valle de la O, Adrian; Professor and investigator at the Department of Basic Sciences of ITESM’s School of Medicine and Health Sciences in Monterrey, Mexico since 2005

Formato:	,
Enlaces:	The aims of this paper were to calculate internal consistency of the Attitude toward Lesbian and Gay Men (ATLG) scale, to determine its factor structure, and to verify the equivalence of the factor structure pattern by gender. An incidental sample…
Fecha:	2013-10-02
Recurso:	Revistas UNAM

Recurso libre

85.

Formato:	,
Enlaces:	The objective of this research was to evaluate the nature and the amount of commentaries made by two Futsal´s coaches during the practices and competitive games and the moment of the game which the commentaries were made by them. Two…
Fecha:	2009-12-10
Recurso:	Revistas UNAM

Recurso libre

86.

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

87.

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

88.

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

89.

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

90.

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

91.

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

92.

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

93.

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

94.

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

95.

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

96.

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

97.

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

98.

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

99.

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

100.

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