Ara es mostren els items 37-56 de 82

    • Elements for a modular dynamic geometry system 

      Freixas Boleda, Marc; Joan Arinyo, Robert; Soto Riera, Antoni (2008-03-16)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      Dynamic geometry systems are tools for geometric visualization. They allow the user to define geometric elements, establish relationships between them and explore the dynamic behavior of the remaining geometric elements ...
    • Estimación y validación de distribuciones de longitud de ejecución para CHC y PBIL aplicados al problema de la selección de la solución deseada 

      Yeguas Bolívar, Enrique; Joan Arinyo, Robert (2008-10)
      Report de recerca
      Accés obert
      Devising a model to figure out metaheuristics performances when applied to high demanding problems is paramount. Such a model would allow to foresee the computational time required for a given output quality. In previous ...
    • Estudio e implementación de metaheurísticas para solucionar el problema de la selección deseada 

      Yeguas Bolívar, Enrique; Luzón, M.V.; Barreiro, E.; Joan Arinyo, Robert (2008-09)
      Report de recerca
      Accés obert
      Evolutionary algorithms are among the most successful approaches for solving a number of problems where systematic search in huge domains must be performed. One problem of practical interest that falls into this category ...
    • Experimentos y análisis de resultados tras la aplicación de metaheurísticas al problema de la selección de la solución deseada 

      Yeguas Bolívar, Enrique; Luzón, M.V.; Barreiro, E.; Joan Arinyo, Robert (2008-09)
      Report de recerca
      Accés obert
      In this work we will conduct an empirical study of the CHC and PBIL metaheuristics performance when applied to solve the Root Identification Problem arised in Geometric Constraint Solving. We identify the main parameters ...
    • Geometric constraint graphs decomposition based on computing graph circuits 

      Joan Arinyo, Robert; Tarres Puertas, Marta Isabel; Vila Marta, Sebastià (Copicentro, 2010-01-01)
      Capítol de llibre
      Accés obert
      Geometric constraint solving is a growing field which plays a paramount role in industrial applications and that is deeply rooted in automated deduction in geometry. In this work we report on an algorithm to solve ...
    • Geometric constraint graphs decomposition based on computing graph circuits 

      Joan Arinyo, Robert; Tarres Puertas, Marta Isabel; Vila Marta, Sebastià (East China Normal University, 2008)
      Text en actes de congrés
      Accés obert
      Geometric constraint solving is a growing field which plays a paramount role in industrial applications and that is deeply rooted in automated deduction in geometry. In this work we report on an algorithm to solve ...
    • Geometric constraint problems and solution instances 

      Hidalgo Garcia, Marta; Joan Arinyo, Robert; Soto Riera, Antoni (2010-05)
      Report de recerca
      Accés obert
      Geometric constraint solving is a growing field devoted to solve geometric problems defined by relationships, called constraints, established between the geometric elements. In this work we show that what characterizes a ...
    • h-graphs : a new representation for tree decompositions of graphs 

      Hidalgo Garcia, Marta; Joan Arinyo, Robert (2015-10-01)
      Article
      Accés obert
      In geometric constraint solving, 2D well constrained geometric problems can be abstracted as Laman graphs. If the graph is tree decomposable, the constraint-based geometric problem can be solved by a Decomposition-Recombination ...
    • h-graphs: A new representation for tree decompositions of graphs 

      Hidalgo Garcia, Marta; Joan Arinyo, Robert (2014)
      Report de recerca
      Accés obert
      In geometric constraint solving, well constrained geometric problems can be abstracted as Laman graphs. If the graph is tree decomposable, the constraint-based geometric problem can be solved by a Decomposition-Recombination ...
    • Implementación de un algoritmo vectorial para la eliminación de partes ocultas en escenas poliédricas 

      Joan Arinyo, Robert (1987-12)
      Report de recerca
      Accés obert
      An important problem in the dessign of Solid Modelling Systems is the one related with the realistic model rendering. Up until now, several algorithms dealing with this topic have been developed. Most of these algorithms ...
    • Interval analysis applied to constraint feasibility in geometric constraint solving 

      Joan Arinyo, Robert; Mata Burgarolas, Nuria (1998-01)
      Report de recerca
      Accés obert
      In design and manufacturing applications, users of computer aided design systems are very often interested in knowing the range of values for some dimensions that define the object under design. This work reports on ...
    • Interval methods for constructive geometric constraint solving problems 

      Joan Arinyo, Robert; Mata, Núria; Soto Riera, Antoni (2002-01)
      Report de recerca
      Accés obert
      In advanced computer-aided design systems, an object is defined by a collection of geometric elements along with a set of geometric constraints between them. Given the values assigned to the constraint parameters, ...
    • Isothetic polyhedra and monotone boolean formulae 

      Joan Arinyo, Robert (1994-01)
      Report de recerca
      Accés obert
      We consider the problem of converting boundary representations of isothetic polyhedra into constructive solid geometry (CSG) representations. The CSG representation is a boolean formula based on the halfspaces supporting ...
    • Modelo interactivo híbrido de la dinámica de una torre de destilación 

      Joan Arinyo, Robert; Fernández, Rubén O. (Asociación Española de Informática y Automática (AEIA), 1979)
      Text en actes de congrés
      Accés obert
      Se presenta un modelo interactivo híbrido en tiempo real para el estudio de los transitorios de concentración y de temperatura de una torre de destilación en producción contínua en respuesta a perturbaciones introducidas ...
    • Multiresolution approximation of polyhedral solids 

      Ayala Vallespí, M. Dolors; Brunet Crosa, Pere; Joan Arinyo, Robert; Navazo Álvaro, Isabel (1996-06)
      Report de recerca
      Accés obert
      Multiresolution models with different levels of detail are a basic tool for handling very large and complex systems in computer aided design applications such as ship design. In this work, we discuss several automatic ...
    • Navigating large terrains using commodity mobile devices 

      Noguera, José María; Segura, Rafael; Ogáyar, Carlos; Joan Arinyo, Robert (2011-09)
      Article
      Accés restringit per política de l'editorial
    • On the integration of CAD and CAE 

      Hoffmann, C M; Joan Arinyo, Robert (1994-10)
      Report de recerca
      Accés obert
      The principal problem that must be solved when integrating CAD and CAE is to devise an algorithmic exchange of information between the two subsystems. Elsewhere, we have argued that higher-level representations can be ...
    • On tree decomposability of Henneberg graphs 

      Hidalgo, Marta R.; Joan Arinyo, Robert (2014)
      Report de recerca
      Accés obert
      In this work we describe an algorithm that generates well constrained geometric constraint graphs which are solvable by the tree-decomposition constructive technique. The algorithm is based on Henneberg constructions and ...
    • On user-defined features 

      Christoph, Hoffmann M; Joan Arinyo, Robert (1996-10)
      Report de recerca
      Accés obert
      Feature-based design is becoming one of the basic design paradigms of CAD systems. In this paradigm the basic unit is a feature and parts are constructed from a sequence of feature attachment operations. The type and ...
    • Ordering triangles in triangulated terrains over regular grids 

      Joan Arinyo, Robert; Alonso Alonso, Jesús (2016)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      In this work we report on a set of rules to visit triangles in triangulated height fields defined over regular grids in a back-to- front order with respect to an arbitrary viewpoint. With the viewpoint, we associate an ...