Metabuscador

Filtrado por:

Temas

Idiomas

Recursos

Unversidad Nacional de La Plata (107)

Más...

Año

2010 (1)
2009 (3)
2006 (1)
2005 (15)
2003 (3)
2002 (15)
Más...

Aproximadamente 107 registro(s) hasta el momento: (journal)

Mostrar 10 | 50 | 100 resultados por página

Recurso libre

Watch IT: The risks and promises of new information technologies. Nicholas C. Burbules, Thomas A. Callister (h) Ediciones Granica S. A., 2001
Gorga, Gladys - Madoz, María Cristina

Formato:	Articulo, Revision
Enlaces:	Descripción completa.
Fecha:	2008-10-10
Recurso:	Unversidad Nacional de La Plata

Recurso libre

High performance VLSI signal processing: Innovative architectures and algorithms. Volume 2 - Systems design and applications. Edited by K. J. Ray Liu and Kung Yao. IEEE Press, 1998
Villagarcía Wanza, Horacio A.

Formato:	Articulo, Revision
Enlaces:	One of the major breakthroughs in VLSI technology has been its ability to implement signal processing algorithms and architectures onto cost-effective ASIC and DSP chips. Works in this area are highly interdisciplinary; they involve interaction among areas such as VLSI…
Fecha:	2008-10-10
Recurso:	Unversidad Nacional de La Plata

Recurso libre

Redes neuronales artificiales. Un enfoque práctico P. Isasi Viñuela, I. M. Galván. Pearson Educación, 2004
Lanzarini, Laura Cristina

Formato:	Articulo, Revision
Enlaces:	Artificial Neural Networks belong to the sub-symbolic branch of Artificial Intelligence since they allow to find the solution of a problem without the need of knowing the algorithm necessary to solve it. This turns them into a tool based on…
Fecha:	2008-10-10
Recurso:	Unversidad Nacional de La Plata

Recurso libre

Toward integration of knowledge based systems and knowledge discovery systems
Rancan, Claudio - Pesado, Patricia - García-Martínez, Ramón

Formato:	Articulo, Articulo
Enlaces:	This paper presents a proposal for an architecture that integrates knowledge discovery systems (automatic acquisition) and knowledge based systems (experts systems). This work formulates considerations over the viability of the implementation of this architecture according to the advance of the…
Fecha:	2008-05-21
Recurso:	Unversidad Nacional de La Plata

Recurso libre

Harmonic Theory and Machine Learning
Nanclares, Jorge - Rapallini Ulises Mario Alberto

Formato:	Articulo, Articulo
Enlaces:	A natural inference mechanism is presented : the Black Box problem is transformed into a Dirichlet's problem on the closed cube. Then it is solved in closed polynomial form, together with a Mean-Value theorem and a Maximum Principle.A generalization to…
Fecha:	2008-05-22
Recurso:	Unversidad Nacional de La Plata

Recurso libre

A lightweight method for computing ball spin in real time
Cristina, Federico - Dapoto, Sebastián H. - Russo, Claudia Cecilia

Formato:	Articulo, Articulo
Enlaces:	The present paper poses a new method for computing the rotation of a ball in sport training situations, when the ball is approaching the goal line. The proposed method significantly reduces the hardware requirements associated to the capture, as well…
Fecha:	2008-05-21
Recurso:	Unversidad Nacional de La Plata

Recurso libre

A model for the automatic mapping of tasks to processors in heterogeneous multi-cluster architectures
De Giusti, Laura Cristina - Chichizola, Franco - Naiouf, Marcelo - Ripoll, Ana - De Giusti, Armando Eduardo

Formato:	Articulo, Articulo
Enlaces:	This paper discusses automatic mapping methods for concurrent tasks to processors applying graph analysis for the relation among tasks, in which processing and communicating times are incorporated. Starting by an analysis in which processors are homogeneous and data transmission times…
Fecha:	2008-05-21
Recurso:	Unversidad Nacional de La Plata

Recurso libre

An ACO model for a non-stationary formulation of the single elevator problem
Molina, Silvia - Leguizamón, Mario Guillermo - Alba, Enrique

Formato:	Articulo, Articulo
Enlaces:	The Ant Colony Optimization (ACO) metaheuristic is a bio-inspired approach for hard combinatorial optimization problems for stationary and non-stationary environments. In the ACO metaheuristic, a colony of artificial ants cooperate for finding high quality solutions in a reasonable time. An…
Fecha:	2008-05-21
Recurso:	Unversidad Nacional de La Plata

Recurso libre

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

Formato:	Articulo, Articulo
Enlaces:	The paper presents a formal model for a knowledge repository shared by members of a Virtual Community of Practice (VCPs), describes how the repository can be used to underpin collaborative problem solving, and how to build computer support for such…
Fecha:	2008-05-21
Recurso:	Unversidad Nacional de La Plata

Recurso libre

10.

Interaction on graphs using non-conventional devices
Escarza, Sebastián - Castro, Silvia Mabel - Martig, Sergio R.

Formato:	Articulo, Articulo
Enlaces:	Interactions become essential in Visualization because they enable users to adapt the visual representation to their own needs allowing them to explore the underlying information space. By using non-conventional devices, they face a wider fan of interaction possibilities to explore…
Fecha:	2008-05-21
Recurso:	Unversidad Nacional de La Plata

Recurso libre

11.

Directional continuous wavelet transform applied to handwritten numerals recognition using neural networks
Romero, Diego - Seijas, Leticia - Ruedín, Ana M. C.

Formato:	Articulo, Articulo
Enlaces:	The recognition of handwritten numerals has many important applications, such as automatic lecture of zip codes in post offices, and automatic lecture of numbers in checknotes. In this paper we present a preprocessing method for handwritten numerals recognition, based on…
Fecha:	2008-05-21
Recurso:	Unversidad Nacional de La Plata

Recurso libre

12.

Framework for web application agile development
Delía, Lisandro - Cáseres, Germán - Ramón, Hugo Dionisio - Thomas, Pablo Javier - Bertone, Rodolfo Alfredo

Formato:	Articulo, Articulo
Enlaces:	Any system interacting with a data base requires modules capable of operating data stored in it. Its development times generally vary between 50 to 60 % of the time used for the application life cycle. The present paper describes the…
Fecha:	2008-05-21
Recurso:	Unversidad Nacional de La Plata

Recurso libre

13.

Center selection techniques for metric indexes
Mendoza Alric, Cristian - Herrera, Norma Edith

Formato:	Articulo, Articulo
Enlaces:	The metric spaces model formalizes the similarity search concept in nontraditional databases. The goal is to build an index designed to save distance computations when answering similarity queries later. A large class of algorithms to build the index are based…
Fecha:	2008-05-22
Recurso:	Unversidad Nacional de La Plata

Recurso libre

14.

Evacuation simulations using cellular automata
Tissera, Pablo - Printista, Alicia Marcela - Errecalde, Marcelo Luis

Formato:	Articulo, Articulo
Enlaces:	Computer simulations using Cellular Automata (CA) have been applied with considerable success in diferent scientific areas, such as chemistry, biochemistry, economy, physics, etc. In this work we use CA in order to specify and implement a simulation model that allows…
Fecha:	2008-05-21
Recurso:	Unversidad Nacional de La Plata

Recurso libre

15.

Process tracking for dynamic tuning applications on the grid
Costa, Genaro - Morajko, Anna - Margalef, Tomás - Luque Fadón, Emilio

Formato:	Articulo, Articulo
Enlaces:	The computational resources need by the scientific community to solve problems is beyond the current available infrastructure. Performance requirements are needed due constant research progress, new problems studies or detail increase of the current ones. Users create new wide distributed…
Fecha:	2008-05-21
Recurso:	Unversidad Nacional de La Plata

Recurso libre

16.

Cellular outline segmentation using fractal estimators
Salvatelli, Adrián - Caropresi, José - Delrieux, Claudio - Izaguirre, María F. - Casco, Víctor

Formato:	Articulo, Articulo
Enlaces:	Segmentation in biological images is essential for the determination of biological parameters that allow the construction of models of several biological problems. This helps to establish clear relationships between those models and the parameter estimation, and for elaboration of key…
Fecha:	2008-05-22
Recurso:	Unversidad Nacional de La Plata

Recurso libre

17.

A criteria to select genetic operators for solving CSP
Riff Rojas, María Cristina

Formato:	Articulo, Articulo
Enlaces:	Our interest is to define evolutionary algorithms to solve Constraint Satisfaction Problems (CSP), which indlude benefits of taditional resolution methods of CSPs as well as inherent characteristics of these kind of problems. In this paper we propose a criterion to…
Fecha:	2004-05-06
Recurso:	Unversidad Nacional de La Plata

Recurso libre

18.

Image compression for medical diagnosis using neural networks
Lanzarini, Laura Cristina - Vargas Camacho, María Teresa - Flores Badrán, Amado - De Giusti, Armando Eduardo

Formato:	Articulo, Articulo
Enlaces:	Images compression is a widely studied topic. Conventional situations offer variable compression ratios depending on the image in question and, in general, do not yield good results for images that are rich in tones. This work is an application of…
Fecha:	2004-05-10
Recurso:	Unversidad Nacional de La Plata

Recurso libre

19.

A multi-paradigm approach for mobile agents development
Belloni, Edgardo A.

Formato:	Articulo, Articulo
Enlaces:	Mobile agent systems have received important attention in the last years as a new programming paradigm for widely distributed and heterogeneous systems. In this article, a multi-paradigm approach for the development of intelligent mobile agents is presented. It integrates both…
Fecha:	2004-03-30
Recurso:	Unversidad Nacional de La Plata

Recurso libre

20.

Image processing with nonseparable multiwavelets
Ruedín, Ana M. C.

Formato:	Articulo, Articulo
Enlaces:	In a general context we introduce image processing with 1-dimensional wavelets and show the diferences with nonseparable 2-dimensional wavelets having quincunx decimation, in the first place, and with balanced nonseparable 2-dimensional multiwavelets, in the second place. All of them are…
Fecha:	2004-04-22
Recurso:	Unversidad Nacional de La Plata

Recurso libre

21.

An algorithm for dynamic reconfiguration of mobile agents
Valente, Marco Tulio - Bigonha Andrade da Silva, Mariza - Bigonha da Silva, Roberto

Formato:	Articulo, Articulo
Enlaces:	In this paper we show an algorithm for dynamic reconfiguration of distributed applications based on the mobile agent model. We also show that the proposed algorithm can be easily implemented in the IPL language, a language with several abstractions for…
Fecha:	2004-03-23
Recurso:	Unversidad Nacional de La Plata

Recurso libre

22.

Wavelet representation of functions defined on tetrahedrical grids
Castro, Silvia - Castro, Liliana - Boscardín, Liliana - De Giusti, Armando

Formato:	Articulo, Articulo
Enlaces:	In this paper, a method for representing scalar functions on volumes is presented. The method is based on wavelets and it can be used for representing volumetric data (geometric or scalar) defifined on non structured grids. The basic contribution is…
Fecha:	2004-02-09
Recurso:	Unversidad Nacional de La Plata

Recurso libre

23.

Generation of flexible 3D objects
González, Adela

Formato:	Articulo, Articulo
Enlaces:	The objective of this research is to develop a tool for the generation of 3D objects modeled with flexible materials, with visco-elastic or inelastic characteristics, similar to the plasticine. It is desirable to prioritize the simplicity of the interface with…
Fecha:	2004-02-06
Recurso:	Unversidad Nacional de La Plata

Recurso libre

24.

Requirement and analysis: where is the boundary if any?
Pastor, Oscar

Formato:	Articulo, Articulo
Enlaces:	Descripción completa.
Fecha:	2008-10-10
Recurso:	Unversidad Nacional de La Plata

Recurso libre

25.

Requirements engineering-challenges from the agent-oriented approach
Cysneiros, Luiz Marcio

Formato:	Articulo, Articulo
Enlaces:	Descripción completa.
Fecha:	2008-10-10
Recurso:	Unversidad Nacional de La Plata

Recurso libre

26.

Preserving message integrity in dymamic process migration
Heymann Pignolo, Elisa - Tinetti, Fernando Gustavo - Luque Fadón, Emilio

Formato:	Articulo, Articulo
Enlaces:	Processor and network management have a great impact on the performance of Distributed Memory Parallel Computers. Dynamic Process Migration allows load balancing and communication balancing at execution time. Managing the communications involving the migrating process is one of the problems…
Fecha:	2004-05-11
Recurso:	Unversidad Nacional de La Plata

Recurso libre

27.

A high performance core for OSI management agents: implementation, simulation and performance evaluation
Rivalino, Matías Junior

Formato:	Articulo, Articulo
Enlaces:	This article presents a proposal of a multithreaded core for an OSI/ISO management agents including its modeling, simulation and performance evaluation. The proposed model i s compared against another one (unthreaded core) which is the c ommonly adopted model by…
Fecha:	2004-05-11
Recurso:	Unversidad Nacional de La Plata

Recurso libre

28.

Feature extraction for an image retrieving scheme
Fuertes García, José Manuel - Lucena López, Manuel José - Perez de la Blanca Capilla, Nicolás - Fernández Valdivia, Joaquín

Formato:	Articulo, Articulo
Enlaces:	In this paper we present two basic modules whithin the designed scheme for retrieving images of a database from the object colour and shape in the scenes. On the one hand, we desing a new method to detect edges in…
Fecha:	2004-05-12
Recurso:	Unversidad Nacional de La Plata

Recurso libre

29.

JPEG with quadtree adaptive partitioning
Russo, Claudia C. - Ramón, Hugo Dionisio - De Giusti, Armando Eduardo - Flores, Raúl

Formato:	Articulo, Articulo
Enlaces:	In this paper two images compression techniques with loss based on the method used by the compression Standard Joint Photographic Experts Groups (JPEG) and on the Quadtree adaptive partitioning method are presented and compared, and the loss produced studied. The…
Fecha:	2004-05-12
Recurso:	Unversidad Nacional de La Plata

Recurso libre

30.

Parallel recognition and classification of objects
Felice, Rodrigo - Ruscitti, Fernando - Naiouf, Marcelo - De Giusti, Armando Eduardo

Formato:	Articulo, Articulo
Enlaces:	The development of parallel algorithms for an automatic recognition and classification of objects from an industrial line (either production or packaging) is presented. This kind of problem introduces a temporal restriction on images processing, a parallel resolution being therefore required.…
Fecha:	2004-05-12
Recurso:	Unversidad Nacional de La Plata

Recurso libre

31.

Comparative analysis of the method of assignment by classes in GAVaPS
Lanzarini, Laura Cristina - Sanz, Cecilia Verónica - Naiouf, Marcelo - Romero, Fernando

Formato:	Articulo, Articulo
Enlaces:	Three alternatives within the method of assignment by classes are presented for the calculation of individuals lifetime in genetic algorithms with varying population size. (GAVaPS). In the proposed strategy (assignment by classes) individuals are grouped according to their fitness. The…
Fecha:	2004-05-07
Recurso:	Unversidad Nacional de La Plata

Recurso libre

32.

The ant colony metaphor for multiple knapsack problem
Cena, Marcelo Guillermo - Crespo, María Liz - Kavka, Carlos - Leguizamón, Mario Guillermo

Formato:	Articulo, Articulo
Enlaces:	This paper presents an Ant Colony Optimisation (ACO) model for the Multiple Knapsack Problem (MKP). The ACO algorithms, as well as other evolutionary metaphors, are being applied successfully to diverse heavily constrained problems: Travelling Salesman Problem, Quadratic Assignment Problem and…
Fecha:	2004-05-10
Recurso:	Unversidad Nacional de La Plata

Recurso libre

33.

Model evolution and system evolution
Pons, Claudia - Baum, Gabriel Alfredo - Kutsche, Ralf-Detlef

Formato:	Articulo, Articulo
Enlaces:	In this paper we define an evolution mechanism with formal semantics using the metamodeling methodology [Geisler et al.98] based on dynamic logic. A remarkable feature of the metamodeling methodology is the ability to define the relation of intentional and extensional…
Fecha:	2004-04-14
Recurso:	Unversidad Nacional de La Plata

Recurso libre

34.

A hierarchical triangulation for multiresolution terrain models
Abásolo Guerrero, María José - De Giusti, Armando Eduardo - Blat Gimeno, Josep

Formato:	Articulo, Articulo
Enlaces:	Interactive visualisation of triangulated terrain surfaces is still a problem for virtual reality systems. A polygonal model of very large terrain data requires a large number of triangles. The main problems are the representation rendering efficiency and the transmission over…
Fecha:	2004-05-06
Recurso:	Unversidad Nacional de La Plata

Recurso libre

35.

Crowding under diverse distance criteria for niche formation in multimodal optimization
Fernandez, Natalia - Alfonso, Hugo - Gallard, Raúl Hector

Formato:	Articulo, Articulo
Enlaces:	Niche formation allows evolutionary algorithms to be used when the location and maintenance of multiple solutions appertaining to diverse areas of the phenotypic space is required. Consequently the application field can be extended to multiobjective optimization, simulation of complex systems…
Fecha:	2004-05-06
Recurso:	Unversidad Nacional de La Plata

Recurso libre

36.

Formalizing defeasible argumentation using a labeled deductive system
Chesñevar, Carlos Iván - Simari, Guillermo Ricardo

Formato:	Articulo, Articulo
Enlaces:	In the last years there has been and increasing demand of a variety of logical systems, prompted mostly by applications of logic in AI, logic programming an other related areas. Labeled Deductive Systems (LDS) were developed as a flexible methodology…
Fecha:	2004-03-30
Recurso:	Unversidad Nacional de La Plata

Recurso libre

37.

Coscheduling techniques and monitoring tools for non-dedicated cluster computing
Solsona Theás, Francesc - Giné de Solà, Francesc - Hernández Budé, Porfidio - Luque Fadón, Emilio

Formato:	Articulo, Articulo
Enlaces:	Our efforts are directed towards the understanding of the coscheduling mechanism in a NOW system when a parallel job is executed jointly with local workloads, balancing parallel perfor-mance against the local interactive response. Explicit and implicit coscheduling techniques in a…
Fecha:	2004-03-15
Recurso:	Unversidad Nacional de La Plata

Recurso libre

38.

Revision of informant plausibility in multi-Agent system
Simari, Guillermo Ricardo - Falappa, Marcelo Alejandro

Formato:	Articulo, Articulo
Enlaces:	Within the context of multi-agent systems, an agent may often find itself in a position where it receives information through informants. These informants are independent agents who have their own interests and, therefore are not necessarily completely reliable. It is…
Fecha:	2004-03-19
Recurso:	Unversidad Nacional de La Plata

Recurso libre

39.

Parallel processing applied to the design of concrete encased grounding electrodes
Murta Vale, María Helena - de Aquino Silveira, Humberto - Visacro Filho, Silvério - Matsumoto Sato, Liria

Formato:	Articulo, Articulo
Enlaces:	This work presents the authors investigation regarding the application of parallel processing to the design of grounding systems, comprising concrete encased electrodes. The natural parallelism of the involved tasks and the large time-consuming characteristic of sequential processing for this kind…
Fecha:	2004-03-24
Recurso:	Unversidad Nacional de La Plata

Recurso libre

40.

Using boolean circuits for the parallel computation of queries
Gagliardi, Edilma Olinda - Herrera, Norma Edith - Reyes, Nora Susana - Turull Torres, José María

Formato:	Articulo, Articulo
Enlaces:	We present partial results of a research project in which we use boolean circuits as a parallel computation model for the expression of queries to relational databases. For that purpose, we use the well-known equivalence between First Order Logic (FO)…
Fecha:	2004-03-25
Recurso:	Unversidad Nacional de La Plata

Recurso libre

41.

Parallelization of image similarity analysis
Naiouf, Marcelo - Tarrío, Diego F. - De Giusti, Armando Eduardo - De Giusti, Laura Cristina

Formato:	Articulo, Articulo
Enlaces:	The algorithmical architecture and structure is presented for the parallelization of image similarity analysis, based on obtaining multiple digital signatures for each image, in which each "signature" is composed by the most representative coefficients of the wavelet transform of the…
Fecha:	2004-03-26
Recurso:	Unversidad Nacional de La Plata

Recurso libre

42.

Instantaneous messaging system: a distributed approach
García, Pablo S. - Silva, Omar E. - Ardenghi, Jorge Raúl

Formato:	Articulo, Articulo
Enlaces:	This work presents the development of an instantaneous messaging system, which is centered on the distributed handling of user groups. The method pro-posed for handling of groups has several distinctive characteristics: the non exis-tence of a moderator for each group,…
Fecha:	2004-03-26
Recurso:	Unversidad Nacional de La Plata

Recurso libre

43.

Enhancing evolutionary algorithms through recombination and parallelism, Enhancing evolutionary algorithms through recombination and parallelismm
Gallard, Raúl Hector - Esquivel, Susana Cecilia

Formato:	Articulo, Articulo
Enlaces:	Evolutionary computation (EC) has been recently recognized as a research field, which studies a new type of algorithms: Evolutionary Algorithms (EAs). These algorithms process populations of solutions as opposed to most traditional approaches which improve a single solution. All these…
Fecha:	2004-03-26
Recurso:	Unversidad Nacional de La Plata

Recurso libre

44.

A new method to compute second derivatives
Scolnik, Hugo Daniel - Gambini, María Juliana

Formato:	Articulo, Articulo
Enlaces:	In this article we consider the problem of computing approximations to the second derivatives of functions of n variables using finite differences. We show how to derive different formulas and how to comput the errors of those approximations as functions…
Fecha:	2004-02-09
Recurso:	Unversidad Nacional de La Plata

Recurso libre

45.

Experiments for analysis of video transmission via ATM
Pissioli, Mauricio - Santos Moreira, Edson dos - Goularte, Rudinei

Formato:	Articulo, Articulo
Enlaces:	A large quantity of data of different types and priorities pass through on high-speed networks. A relevant part of these data, like continuous media (audio, video, and so), need a control of its Quality of Service (QoS). This paper describes…
Fecha:	2004-02-09
Recurso:	Unversidad Nacional de La Plata

Recurso libre

46.

DER: Dynamic Evidential Reasoning applied to hyperspectral images classification
Sanz, Cecilia Verónica - Jordan Ramiro

Formato:	Articulo, Articulo
Enlaces:	This paper describes a new classification method (DER) based on evidential reasoning to which a series of modifications are added [1]. DER allows including new evidence for the classification process and defines a different decision rule. The evidential reasoning algorithm…
Fecha:	2004-02-09
Recurso:	Unversidad Nacional de La Plata

Recurso libre

47.

A parallel implementation of Q-learning based on communication with cache
Printista, Alicia Marcela - Errecalde, Marcelo Luis - Montoya, Cecilia Inés

Formato:	Articulo, Articulo
Enlaces:	Q-Learning is a Reinforcement Learning method for solving sequential decision problems, where the utility of actions depends on a sequence of decisions and there exists uncertainty about the dynamics of the environment the agent is situated on. This general framework…
Fecha:	2004-02-09
Recurso:	Unversidad Nacional de La Plata

Recurso libre

48.

Parallelizing tracking algorithms
Roldán, María Carina - Naiouf, Marcelo - De Giusti, Armando

Formato:	Articulo, Articulo
Enlaces:	In several applications, the trajectory of an entity, a feature or an object has to be tracked over a sequence of image frames. When the processing is to be performed in real time, there are important constraints leading to the…
Fecha:	2004-02-12
Recurso:	Unversidad Nacional de La Plata

Recurso libre

49.

Argument-based negotiation among BDI agents
Rueda, Sonia Vivian - García, Alejandro Javier - Simari, Guillermo Ricardo

Formato:	Articulo, Articulo
Enlaces:	Negotiation is a basic mechanism for interaction that allows the members in a Multiagent System to coordinate their actions and to reach a favorable agreement. When agents are collaborative, the negotiation process progresses through a dialogue in which proposals and…
Fecha:	2004-02-06
Recurso:	Unversidad Nacional de La Plata

Recurso libre

50.

Using business process reengineering to obtain a RAISE specification
Riesco, Daniel Eduardo - Uzal, Roberto - Montejano, Germán Antonio

Formato:	Articulo, Articulo
Enlaces:	We have proposed a technique which can be employed within the methodology known as business process reengineering. This technique has been applied in a government project, which included an Information System and Geographical Information System, developed with financial support from…
Fecha:	2004-02-07
Recurso:	Unversidad Nacional de La Plata