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Aproximadamente 49 registro(s) hasta el momento: (journal)

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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

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

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

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

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

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

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

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

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

10.

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

11.

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

12.

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

13.

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

14.

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

15.

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

16.

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

17.

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

18.

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

19.

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

20.

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

21.

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

22.

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

23.

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

24.

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

25.

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

26.

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

27.

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

28.

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

29.

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

30.

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

31.

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

32.

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

33.

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

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34.

Algebraic specifications and refinement for component-based development using RAISE
Estevez, Elsa Clara - Fillottrani, Pablo Rubén

Formato:	Articulo, Articulo
Enlaces:	There are two main activities in Component-Based Development: component development, where we build libraries for general use, and component integration, where we assemble an application from existing components. In this work, we analyze how to apply algebraic specifications with refinement…
Fecha:	2004-02-07
Recurso:	Unversidad Nacional de La Plata

Recurso libre

35.

Geometric-textured bitree: transmission of a multiresolution terrain the Internet
Abásolo Guerrero, María José - Perales Lopez, Francisco José - De Giusti, Armando Eduardo

Formato:	Articulo, Articulo
Enlaces:	Transmission of large terrain databases across the Internet is still worrying. A large terrain database requires a big number of polygons and textures, and that represents a problem with current bandwidth and resource limitations. Multiresolution models permit progressive transmission, that…
Fecha:	2004-02-07
Recurso:	Unversidad Nacional de La Plata

Recurso libre

36.

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

Formato:	Articulo, Articulo
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:	2004-02-09
Recurso:	Unversidad Nacional de La Plata

Recurso libre

37.

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

38.

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

39.

Communion: a new strategy form memory management in high-performance computer
Toshimi Midorikawa, Edson - Matsumoto Sato, Liria - Zuffo, João Antônio

Formato:	Articulo, Articulo
Enlaces:	Modern computers present a big gap between peak performance and sustained performance. There are many reasons for this situation, but mainly involving an inefficient usage of computational resources. Nowadays the memory system is the most critical component because of its…
Fecha:	2004-05-11
Recurso:	Unversidad Nacional de La Plata

Recurso libre

40.

A parallel approach for backpropagation learning of neural networks
Crespo, María Liz - Piccoli, María Fabiana - Printista, Alicia Marcela - Gallard, Raúl Hector

Formato:	Articulo, Articulo
Enlaces:	Fast response, storage efficiency, fault tolerance and graceful degradation in face of scarce or spurious inputs make neural networks appropiate tools for Intelligent Computer Systems. But on the other hand, learning algorithms for neural networks involve CPU intensive processing and…
Fecha:	2004-05-12
Recurso:	Unversidad Nacional de La Plata

Recurso libre

41.

Multiplexing real time video services
Simón, María - Pechiar, Juan

Formato:	Articulo, Articulo
Enlaces:	Statistical Bit Rate (SBR) transfer capability is considered a good option for supporting Variable Bit Rate (VBR) services. However, its study is somewhat in lag compared with Deterministic Bit Rate (DBR) or Available Bit Rate (ABR) capabilities. The definition of…
Fecha:	2004-05-14
Recurso:	Unversidad Nacional de La Plata

Recurso libre

42.

Self adaptation of parameters for MCPC in genetic algorithms
Esquivel, Susana Cecilia - Leiva, Héctor Ariel - Gallard, Raúl Hector

Formato:	Articulo, Articulo
Enlaces:	As a new promising crossover method, multiple crossovers per couple (MCPC) deserves special attention in evolutionary computing field. Allowing multiple crossovers per couple on a selected pair of parents provided an extra benefit in processing time and similar quality of…
Fecha:	2004-05-03
Recurso:	Unversidad Nacional de La Plata

Recurso libre

43.

Logical foundations and implementation of an extension of temporal logic
Cobo, María Laura - Augusto, Juan Carlos

Formato:	Articulo, Articulo
Enlaces:	The need of counting with the appropiate management of situations involving time an the motion of change, has been reconized as an important aspect in many Computer Science areas. This fact has made evident the need of tools to handle…
Fecha:	2004-05-10
Recurso:	Unversidad Nacional de La Plata

Recurso libre

44.

Fetch unit design for scalable simultaneous multithreading (ScSMT)
Moure, Juan Carlos - Rexachs del Rosario, Dolores - Luque Fadón, Emilio

Formato:	Articulo, Articulo
Enlaces:	Continuous IC process enhancements make possible to integrate on a single chip the re-sources required for simultaneously executing multiple control flows or threads, exploiting different levels of thread-level parallelism: application-, function-, and loop-level. Scalable simultaneous multi-threading combines static and dynamic…
Fecha:	2004-03-29
Recurso:	Unversidad Nacional de La Plata

Recurso libre

45.

Pattern recognition in medical images using neural networks
Lanzarini, Laura Cristina - De Giusti, Armando Eduardo

Formato:	Articulo, Articulo
Enlaces:	The proposal of this research line is the search for alternatives to the resolution of complex problems where human knowledge should be apprehended in a general fashion. In particular, the activities developed so far can be included in the area…
Fecha:	2004-03-31
Recurso:	Unversidad Nacional de La Plata

Recurso libre

46.

The agent routering process of a dynamic distributed decision support system
Stegmayer Machado, Georgina S. - Taverna, María Laura - Chiotti, Omar Juan Alfredo - Galli, María Rosa

Formato:	Articulo, Articulo
Enlaces:	When certain enterprise domain needs to make an unusual decision, it will probably require new kind of information. If the interaction model among domains cannot be defined because the decision scenarios are unpredictable, the system itself must search the required…
Fecha:	2004-03-19
Recurso:	Unversidad Nacional de La Plata

Recurso libre

47.

A comparison of different evolutive niching strategies for identifying a set of selfsimilar contractions for the IFS inverse problem
Gutiérrez Llorente, José Manuel - Ivanissevich, María Laura - Cofiño, A. S.

Formato:	Articulo, Articulo
Enlaces:	The key problem in fractal image compression is that of obtaining the IFS code (a set of linear transformations)which approximates a given image with a certain prescribed accuracy (inverse IFS problem).In this paper,we analyze and compare the performance of sharing…
Fecha:	2004-03-22
Recurso:	Unversidad Nacional de La Plata

Recurso libre

48.

Alternative strategies for asynchronous migration-controlled schemes in parallel genetic algorithm
Ochoa, Claudio - Gallard, Raúl Hector

Formato:	Articulo, Articulo
Enlaces:	Migration of individuals allows a fruitful i nteraction between subpopulations in the island model, a well known distributed approach for evolutionary computing, where separate subpopulations evolve in parallel. This model is well suited for a distributed environment running a Single…
Fecha:	2004-05-13
Recurso:	Unversidad Nacional de La Plata

Recurso libre

49.

On the implementation of the belief change operators
Falappa, Marcelo Alejandro - Fermé, Eduardo L.

Formato:	Articulo, Articulo
Enlaces:	In this article we will introduce certain considerations that must be taken into account while implementing the change operations of the belief change theory. The abstract models of bellief change make no considerations in respecto to the internal structures of…
Fecha:	2004-05-07
Recurso:	Unversidad Nacional de La Plata