Recursos de colección

Universidad Nacional de La Plata (74.538 recursos)

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vol. 02, no. 07

Mostrando recursos 1 - 10 de 10

  1. Heterogeneous parallel-distributed processing applied to process engineering

    Vázquez, Gustavo Esteban
    The main goal of this thesis was to design new parallel processing strategies specially conceived for distributed environments in order to solve numerical and structural problems from the field of process systems engineering more efficiently. More specifically, the numerical sample problem addressed in this work was the optimization of nonlinear objective functions subjected to sets of nonlinear constraints, while the structural sample problem was the development of parallel-distributed structural techniques for process instrumentation design

  2. Evolutionary algorithms for solving multi-objetive problems. Carlos A. Coello Coello, David A. van Veldhuizen and Gary R., Lamont

    Esquivel, Susana Cecilia
    In this book the authors present a complete state-of-the art in the field. Then they give an overall vision about the diverse varieties of MOEAs (Multi-Objetive Evolutionary Algorithms) and their performance. Important aspect such as selection and validation of function tests, MOEA comparison metrics and presentations techniques are also analized. The last two chapters describe theoretical and parallelization issues of this algorithhm class.

  3. High Performance Cluster Computing: Architectures and Systems, Vol. 1 - High Performance Cluster Computing: Programming and Applications, Vol. 2

    Tinetti, Fernando Gustavo
    The two volumes attempt to render a self-contained idea of the state of the art of cluster computing by the year 1999. In the whole, thirty-six articles are presented in Vol. 1 and twenty-nine articles in Vol.2. In each volume, the articles are grouped according to the topics dealt with.

  4. Component-based tool for verifying applications using object-oriented patterns

    Reynoso, Luis A.; Buccella, Agustina; Flores, Andrés P.; Aranda, Gabriela N.
    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 specified a metamodel where properties of patterns and object-oriented design can be rigorously described. In the present work, our formal basis is used to build a component-based tool for verifying proper applications of object-oriented patterns. The usage of this tool is also focused on the learning process about patterns applications. Through a better understanding of patterns, the designer may certify...

  5. Geometric-textured bitree: transmission of a multiresolution terrain the Internet

    Abásolo Guerrero, María José; Perales Lopez, Francisco José; De Giusti, Armando Eduardo
    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 is the transmission of a simple model followed by successive refinements. In this work we present a new multiresolution model called Geometric-Textured Bitree. In contrast with most of recent works, it makes possible the progressive transmission of not only geometry but also the texture of a terrain model. Wavelet Multiresolution Analysis is applied to the selection of geometry points and,...

  6. Algebraic specifications and refinement for component-based development using RAISE

    Estévez, Elsa Clara; Fillottrani, Pablo Rubén
    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 to component development. So we restrict our research to the use of modules that are described as class expressions in a formal specification language, and we present several refinement steps for component development, introducing in each one design decisions and implementation details. This evolution starts from the initial specification of a component as an abstract module, and finishes with the...

  7. Using business process reengineering to obtain a RAISE specification

    Riesco, Daniel Eduardo; Uzal, Roberto; Montejano, Germán Antonio
    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 The World Bank. One model used in process reengineering is the process model diagram, which helps to find the tasks, to be completed in each area of the organisation. To understand the domain is crucial to be able to specify each one of these tasks. We show in this work how to use process modelling to find the tasks and...

  8. Generation of flexible 3D objects

    González, Adela
    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 the user in the interactive deformation process of the object. To compute the deformations of object which is exposed to external forces, like elements with which the modeling will be simulated, what implies the process between the deformable object and rigid ones.

  9. Custom architectures for fuzzy and neural networks controllers

    Acosta, Nelson; Tosini, Marcelo Alejandro
    Standard hardware, dedicated microcontroller or application specific circuits can implement fuzzy logic or neural network controllers. This paper presents efficient architecture approaches to develop controllers using specific circuits. A generator uses several tools that allow translating the initial problem specification to a specific circuit implementation, by using HDL descriptions. These HDL description files can be synthesized to get the FPGA configuration bit-stream.

  10. Argument-based negotiation among BDI agents

    Rueda, Sonia Vivian; García, Alejandro Javier; Simari, Guillermo Ricardo
    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 counter-proposals are exchanged in a common effort to advance towards a mutual agreement. An Interaction Protocol regulates communication and gives structure to the dialog. Most interaction protocols designed to regulate negotiation among agents are abstract models based in some real world negotiation practice (e.g. auctions). Here we propose a deliberative mechanism for negotiation among BDI agents based in Argumentation.

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