Ara es mostren els items 1693-1712 de 94796

  • A context ontology for service provisioning and consumption 

    Cabrera Béjar, Óscar Jair; Franch Gutiérrez, Javier; Marco Gómez, Jordi (Institute of Electrical and Electronics Engineers (IEEE), 2014)
    Text en actes de congrés
    Accés restringit per política de l'editorial
    Nowadays services as those provided by smart cities, health smart services, as well as common services (e.g., telephonic services, e-mail services), have a great economic impact for organisations and represent an important ...
  • A context-aware model to provide positioning in disaster relief scenarios 

    Moreno, Daniel; Ochoa, Sergio; Meseguer Pallarès, Roc (2015-10-01)
    Article
    Accés obert
    The effectiveness of the work performed during disaster relief efforts is highly dependent on the coordination of activities conducted by the first responders deployed in the affected area. Such coordination, in turn, ...
  • A context-aware service architecture for the integration of body sensor networks and social networks through IP multimedia subsystem 

    Domingo Aladrén, Mari Carmen (2011-01-01)
    Article
    Accés restringit per política de l'editorial
    In this article a new context-aware architecture is proposed for the integration of body sensor networks and social networks through the IP Multimedia Subsystem. Its motivating application scenarios are described. The ...
  • A context-based surveillance framework for large infrastructures 

    Ripolles, O.; Silla, J.; Pegueroles Vallés, Josep R.; Saenz, J.; Simó, J.; Sandoval, Cristina; Viktorov, M.; Gómez Muro, Ana (2012)
    Text en actes de congrés
    Accés restringit per política de l'editorial
    In this paper we present the control and surveillance platform that is currently being developed within the ViCoMo project. This project is aimed at developing a context modeling system which can reconstruct the events ...
  • A continuous mixture of two different dimers in liquid water 

    Pardo Soto, Luis Carlos; Henao Aristizábal, Andrés; Busch, Sebastian; Guàrdia Manuel, Elvira; Tamarit Mur, José Luis (2014-01-01)
    Article
    Accés restringit per política de l'editorial
    It is hitherto thought that liquid water is composed of tetrahedrally coordinated molecules with an asymmetric interaction of the central molecule with neighboring molecules. Kuhne et al., Nat. Commun., 2013, 4, 1450 ...
  • A continuous review policy for e-commerce inventory management in darkstores 

    Domingo Espinós, Joana (Universitat Politècnica de Catalunya / Faculdade de Engenharia da Universidade do Porto, 2014)
    Projecte/Treball Final de Carrera
    Accés obert
    The demand placement in e-commerce retail provides a lot of research opportunities. The delay between the order request and depletion from the inventory (reffered to as “ordering window”) allows the retailer to take ...
  • A continuous-discontinous model for softening and cracking based on non-local displacements 

    Tamayo Mas, Elena; Rodríguez Ferran, Antonio (2008)
    Text en actes de congrés
    Accés obert
    A continuous-discontinuous model to simulate numerically an entire failure process is presented. Crack inception and its propagation is modelled by means of a gradient non-local model based on non-local displacements. To ...
  • A continuous-discontinuous model to introduce fluid pressure in a crack. 

    Casado Antolín, Montserrat (Universitat Politècnica de Catalunya, 2016-07-14)
    Treball Final de Grau
    Accés obert
    Cracking of quasi-brittle materials (such as concrete, rocks,) may be modelled by means of continuous, discontinuous or continuous-discontinuous models. The latter combine a continuous damage model for the initial stages ...
  • A continuous-discontinusous model to simulate crack branching in quasi-brittle failure 

    Feliu Fabà, Jordi (Universitat Politècnica de Catalunya, 2016-07-20)
    Projecte Final de Màster Oficial
    Accés obert
    Understanding the material failure of quasi-brittle materials, such as concrete, is of vital importance in civil engineering. A continuous-discontinuous model using X-FEM enrichment can be useful when an explicit representation ...
  • A continuous-time delay chaotic system obtained from a chaotic logistic map 

    Acho Zuppa, Leonardo (ACTA Press, 2017)
    Text en actes de congrés
    Accés restringit per política de l'editorial
    This paper presents a procedure to transform a chaotic logistic map into a continuous-time delay chaotic system by using sampled-data representation of continuous-time models. Because of this, the chaotic behavior of the ...
  • A continuously adaptive vector predictive coder (AVPC) for speech encoding 

    Masgrau Gómez, Enrique José; Mariño Acebal, José Bernardo; Vallverdú Bayés, Sisco (Institute of Electrical and Electronics Engineers (IEEE), 1986)
    Text en actes de congrés
    Accés obert
    In this work we present a waveform speech coding system including vector quantization. This system can be seen as a vector version of the scalar ADPCM speech coder. In such system the speech samples are grouped in vectors ...
  • A contour based approach for bilateral mammogram registration using discrete wavelet analysis 

    Reig Bolano, Ramon; Parisi Baradad, Vicenç; Marti Puig, Pere (2009)
    Article
    Accés restringit per política de l'editorial
    Registration of mammograms is an essential step to increase the effectiveness of all screening programs planned to early detect breast cancer in asymptomatic women. New techniques based on data fusion of different spatial ...
  • A contour matching approach for accurate NOAA-AVHRR image navigation 

    Eugenio, F; Marqués Acosta, Fernando; Suarez, E; Rovaris, E (Eurasip, 2000)
    Text en actes de congrés
    Accés obert
    Although different methods for NOAA AVHRR image navigation have already been established, the multitemporal and multi-satellite character of most studies requires automatic and accurate methods for navigation of satellite ...
  • A contour-based approach to binary shape coding using a multiple grid chain code 

    Nunes, P; Marqués Acosta, Fernando; Pereira, F; Gasull Llampallas, Antoni (2000-05)
    Article
    Accés obert
    This paper presents a contour-based approach to efficiently code binary shape information in the context of object-based video coding. This approach meets some of the most important requirements identified for the MPEG-4 ...
  • A contribution on adaptive coding strategies over H.F. channels 

    Dalmau Royo, Jordi; Delgado Penin, José A. (1989)
    Text en actes de congrés
    Accés obert
    We present a coding scheme which makes use of adaptive coding techniques. Since we are concerned with the H,F, channel, suitable coding schemes are needed to combat diffuse errors [1], i. e, random and burst errors, ...
  • A contribution to multi-criteria decision making in sustainable energy management based on fuzzy and qualitative reasoning 

    Afsordegan, Arayeh (Universitat Politècnica de Catalunya, 2015-12-21)
    Tesi
    Accés obert
    Energy problems are serious problems caused by limited resources and by human activity such as deforestation, water pollution and various other long-term practices that have environmental impact which produces global warming ...
  • A contribution to the contractibility problem for overlapping controllers 

    Rossell Garriga, Josep Maria; Palacios Quiñonero, Francisco; Luo, Ningsu (2010)
    Text en actes de congrés
    Accés restringit per política de l'editorial
    In this work, a contribution to the contractibility of decentralized control laws, in the context of the Inclusion Principle, is offered. By means of this principle, an overlapping system can be expanded to another bigger ...
  • A contribution to the finite element analysis of high-speed compressible flows and aerodynamics shape optimization 

    Kouhi Esfahani, Mohammad (Universitat Politècnica de Catalunya, 2013-09-30)
    Tesi
    Accés obert
    This work covers a contribution to two most interesting research elds in aerodynamics, the fi nite element analysis of high-speed compressible flows (Part I) and aerodynamic shape optimization (Part II). The fi rst part ...
  • A contribution to the ranking and description of classifications 

    Sánchez Hernández, Germán (Universitat Politècnica de Catalunya, 2013-09-13)
    Tesi
    Accés obert
    This thesis presents a novel and complete fuzzy multi-criteria decision making (MCDM) methodology. This methodology is specifically designed for selecting classifications in the framework of unsupervised learning systems. ...
  • A contribution to the theory of convolutional codes from systems theory piont of view 

    Um, Laurence Emilie (Universitat Politècnica de Catalunya, 2015-05-25)
    Tesi
    Accés obert
    Realitzat a/amb:  Jāmiʻat Muḥammad al-Khāmis
    Information is such a valuable good of our time. Given that the transmission of information has always been subject to precision problems, knowing the obstacles existing between the transmitter and the receiver, eventual ...