Ara es mostren els items 19-22 de 22

    • Towards free form surfaces 

      Cotrina Navau, Josep; Pla García, Núria; Vigo Anglada, Marc (2001-03)
      Report de recerca
      Accés obert
      A theoretical approach to construct free form surfaces is presented. We develop the conceps that arise when a free form surface is generated by tracing a mesh, using differentiable manifold theory, and generalizing the ...
    • Tracing traitors by guessing secrets. The q-ary case 

      Fernández Muñoz, Marcel; Soriano Ibáñez, Miguel; Cotrina Navau, Josep (Springer, 2005)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      In this paper we present, by solving a variant of the guessing secrets problem defined by Chung, Graham and Leighton [3], a sequential traitor tracing scheme equipped with an efficient identification algorithm. Sequential ...
    • User activity monitoring using conventional cell phones 

      Brezmes, Tomas; Gorricho Moreno, Juan Luis; Cotrina Navau, Josep; Rersa, Marc (2010-04-09)
      Text en actes de congrés
      Accés obert
      User activity monitoring has a considerable potential for a whole range of new applications in different environments: user surveillance, military purposes, health-care, etc. More precisely, in health-care there is an ...
    • Wireless technology applied to GIS 

      Casademont Serra, Jordi; López Aguilera, M. Elena; Paradells Aspas, Josep; Rojas Espinosa, Alfonso; Calveras Augé, Anna M.; Barceló Arroyo, Francisco; Cotrina Navau, Josep (Elsevier, 2004-07)
      Article
      Accés restringit per política de l'editorial
      At present, there is a growing interest in wireless applications, due to the fact that the technology begins to support them at reasonable costs. In this paper, we present the technology currently available for use in ...