Ara es mostren els items 17373-17392 de 86119

  • Computing in transition: the origins of Barcelona's School of Informatics, 1976-1984 

    Fornés Guardia, Jordi; Herran, Nestor (2014-01-01)
    Article
    Accés restringit per política de l'editorial
    The first Spanish computer science university degrees were established in Catalonia in 1976 amidst the country's political transition to democracy. Based on an oral history project and the school's archives, this article ...
  • Computing jumping numbers and multiplier ideals in two-dimensional regular local rings 

    Alberich Carramiñana, Maria; Álvarez Montaner, Josep; Dachs Cadefau, Ferran (Universitat de Barcelona. Edicions i Publicacions, 2014)
    Text en actes de congrés
    Accés restringit per política de l'editorial
    We give a new algorithm that computes the jumping numbers with their multiplicities and multiplier ideals of any ideal in a regular two-dimensional local ring.
  • Computing maximal tiles and application to impostor-based simplification 

    Andújar Gran, Carlos Antonio; Brunet Crosa, Pere; Chica Calaf, Antonio; Navazo Álvaro, Isabel; Rossignac, Jarek; Vinacua Pla, Álvaro (North Holland, 2004-08)
    Article
    Accés restringit per política de l'editorial
    The computation of the largest planar region approximating a 3D object is an important problem with wide applications in modeling and rendering. Given a voxelization of the 3D object, we propose an efficient algorithm to ...
  • Computing multiple-valued logic programs 

    Lu, James J.; Calmet, Jacques; Schü, Joachim (Universitat Politècnica de Catalunya. Secció de Matemàtiques i Informàtica, 1997)
    Article
    Accés obert
    The logic of signed formula can be used to reason about a wide variety of multiple-valued logics \cite{hah94,lmr96}. The formal theoretical foundation of multiple-valued logic programming based on signed formulas is set ...
  • Computing Optimization for Design, Construction and Testing of Trawling Techniques 

    Autor desconegut (SARTI (Technological Development Centre of Remote Acquisition and Data processing Systems. Technical University of Catalonia (UPC)., 2004-04-01)
    Article
    Accés obert
  • Computing parameter ranges in constructive geometric constraint solving: A correctness proof 

    Hidalgo Garcia, Marta; Joan Arinyo, Robert; Soto Riera, Antoni (2011)
    Report de recerca
    Accés obert
    In parametric design, changing values of parameters to get different solution instances to the problem at hand is a paramount operation. One of the main issues when generating the solution instance for the actual set of ...
  • Computing parameter ranges in constructive geometric constraint solving: Implementation and correctness proof 

    Hidalgo, Marta; Joan Arinyo, Robert (Elsevier, 2012-07)
    Article
    Accés restringit per política de l'editorial
    In parametric design, changing values of parameters to get different solution instances to the problem at hand is a paramount operation. One of the main issues when generating the solution instance for the actual set of ...
  • Computing repairs for constraint violations in UML/OCL conceptual schemas 

    Oriol Hilari, Xavier; Teniente López, Ernest; Tort, Albert (Elsevier, 2015-06-25)
    Article
    Accés restringit per política de l'editorial
    Updating the contents of an information base may violate some of the constraints defined over the schema. The classical way to deal with this problem has been to reject the requested update when its application would lead ...
  • Computing reputation for collaborative private networks 

    Nin Guerrero, Jordi; Carminati, Barbara; Ferrari, Elena; Torra i Reventós, Vicenç (IEEE Computer Society Publications, 2009)
    Text en actes de congrés
    Accés obert
    The use of collaborative network services is increasing, therefore, the protection of the resources and relations shared by network participants is becoming crucial. One of the main issues in such networks is the evaluation ...
  • Computing resource management in software-defined and cognitive radios 

    Marojevic, Vuk (Universitat Politècnica de Catalunya, 2010-10-09)
    Tesi
    Accés obert
    Our research aims at contributing to the evolution of modern wireless communications and to the development of software-defined radio (SDR) and cognitive radio, in particular. It promotes a general resource management ...
  • Computing similarity between piecewise-linear functions 

    Agarwal, Pankaj; Aronov, Boris; Kreveld, Marc van; Löffler, Maarten; Silveira, Rodrigo Ignacio (ACM Press. Association for Computing Machinery, 2010)
    Text en actes de congrés
    Accés obert
    We study the problem of computing the similarity between two piecewise-linear bivariate functions de ned over a common domain, where the surfaces they de ne in 3D|polyhedral terrains|can be transformed vertically by a ...
  • Computing the barycenter graph by means of the graph edit distance 

    Bardaji Goikoetxea, Itziar; Ferrer Sumsi, Miquel; Sanfeliu Cortés, Alberto (2010)
    Text en actes de congrés
    Accés obert
    The barycenter graph has been shown as an alternative to obtain the representative of a given set of graphs. In this paper we propose an extension of the original algorithm which makes use of the graph edit distance in ...
  • Computing the expected Markov reward rates with stationarity detection and relative error control 

    Suñé, Víctor (Kluwer Academic Publishers, 2016-03-11)
    Article
    Accés obert
    By combining in a novel way the randomization method with the stationary detection technique, we develop two new algorithms for the computation of the expected reward rates of finite, irreducible Markov reward models, with ...
  • Computing the Importance of Schema Elements Taking Into Account the Whole SCHEMA 

    Villegas Niño, Antonio (Universitat Politècnica de Catalunya, 2009-06)
    Projecte Final de Màster Oficial
    Accés obert
    Conceptual Schemas are one of the most important artifacts in the development cycle of information systems. To understand the conceptual schema is essential to get involved in the information system that is described within ...
  • Computing the medial axis transform of polygonal domains by tracing paths 

    Joan Arinyo, Robert; Pérez Vidal, Lluís; Vilaplana Pasto, Josep (1999-04)
    Report de recerca
    Accés obert
    A practical algorithm for computing the medial axis transform of 2D polygonal domains is presented. The algorithm computes the medial axis by tracing its paths. The medial axis is generated in the form of a graph where ...
  • Computing the medial axis transform of polygonal objects by testing discs 

    Vilaplana Pasto, Josep (1996-10)
    Report de recerca
    Accés obert
    An algorithm for computing the medial axis transform of 2D polygonal domains is presented. It exploits the full connectivity of the medial axis in polygonal domains by advancing a previously known maximal inscribed disc ...
  • Computing the relevant instances that may violate an OCL constraint 

    Cabot Sagrera, Jordi; Teniente López, Ernest (2005-03)
    Report de recerca
    Accés obert
    Integrity checking is aimed at efficiently determining whether the state of the information base is consistent after the application of a set of structural events. One possible way to achieve efficiency is to consider ...
  • Computing the volume enclosed by a periodic surface and its variation to model a follower pressure 

    Rahimi Lenji, Mohammad; Zhang, Kuan; Arroyo Balaguer, Marino (2015-03-01)
    Article
    Accés obert
    In modeling and numerically implementing a follower pressure in a geometrically nonlinear setting, one needs to compute the volume enclosed by a surface and its variation. For closed surfaces, the volume can be expressed ...
  • Computing upper and lower bounds for the J-integral in two-dimensional linear elasticity 

    Xuan, Z C; Parés Mariné, Núria; Peraire Guitart, Jaume (2006-01)
    Article
    Accés obert
    We present an a posteriori method for computing rigorous upper and lower bounds for the J-integral in two-dimensional linear elasticity. The J-integral, which is typically expressed as a contour integral, is recast as a ...
  • Computing voter transitions: The elections for the Catalan parliament, from 2010 to 2012 

    Corominas Subias, Albert; Lusa García, Amaia; Calvet Puig, Maria Dolors (Universitat Politècnica de Catalunya. Departament d'Organització d'Empreses (OE), 2015)
    Article
    Accés obert
    Purpose: To estimate the transition rates corresponding to the 2010 and 2012 elections to the Catalan Parliament for the four constituencies in which Catalonia is divided for this purpose. The main features of the results, ...