Ara es mostren els items 28296-28315 de 84466

  • Efficient implementations of the randomization method with control of the relative error 

    Suñé, Víctor; Carrasco, Juan A. (2005-05)
    Article
    Accés obert
    Randomization is a well-known numerical method for the transient analysis of continuous-time Markov chains. The main advantages of the method are numerical stability, well-controlled computation error and ability to specify ...
  • Efficient Key Generation and Distribution on Wireless Sensor Networks 

    Ariño Pérez, Víctor (Universitat Politècnica de Catalunya / Kungl. Tekniska högskolan. School of Electrical Engineering, 2013-07-31)
    Projecte/Treball Final de Carrera
    Accés obert
    [ANGLÈS] Wireless Sensor Networks have become popular during the last years. The introduction of IPv6 which broadened the address space available, IEEE802.15.4 and adaptation layers such as 6loWPAN have allowed the ...
  • Efficient margin adaptive scheduling for MIMO-OFDMA systems 

    Moretti, Marco; Pérez Neira, Ana Isabel (2013-01)
    Article
    Accés restringit per política de l'editorial
    In this paper we address the problem of margin adaptive scheduling in the downlink of an orthogonal frequency division multiple access (OFDMA) multiple-input multiple-output (MIMO) system. Optimal resource allocation in ...
  • Efficient mathematical frameworks for detailed production scheduling in food processing industries 

    Kopanos, Georgios; Puigjaner Corbella, Lluís; Georgiadis, Michael C. (Pergamon Press, 2012)
    Article
    Accés restringit per política de l'editorial
    The production scheduling of a real-world multistage food process is considered in this work. An efficient mixed integer programming (MIP) continuous-time model is proposed to address the production problem under study. ...
  • Efficient Mobility Management in LTE Femtocell Network 

    Xiang, Tianyu (Universitat Politècnica de Catalunya, 2014-08)
    Projecte Final de Màster Oficial
    Accés obert
    The future network architecture towards heterogeneous, it would be converged many different types of network, such as cellular network, femtocell network, ad-hoc network, MANET, VANET and wireless sensor network. With new ...
  • Efficient models for building acoustics : combining deterministic and statistical methods 

    Díaz Cereceda, Cristina (Universitat Politècnica de Catalunya, 2013-11-15)
    Tesi
    Accés obert
    Modelling vibroacoustic problems in the field of building design is a challenging problem due to the large size of the domains and the wide frequency range required by regulations. Standard numerical techniques, for instance ...
  • Efficient monocular pose estimation for complex 3D models 

    Rubio Romano, Antonio; Villamizar Vergel, Michael Alejandro; Ferraz Colomina, Luis; Peñate Sánchez, Adrián; Ramisa Ayats, Arnau; Simó Serra, Edgar; Sanfeliu Cortés, Alberto; Moreno-Noguer, Francesc (Institute of Electrical and Electronics Engineers (IEEE), 2015)
    Text en actes de congrés
    Accés obert
    We propose a robust and efficient method to estimate the pose of a camera with respect to complex 3D textured models of the environment that can potentially contain more than 100, 000 points. To tackle this problem we ...
  • Efficient motion planning for high DOF hands using principal motion directions 

    Rosell Gratacòs, Jan; Suárez Feijóo, Raúl; Rosales Gallegos, Carlos; García, J.A.; Pérez Ruiz, Alexander (2008-10)
    Report de recerca
    Accés obert
    The paper deals with the problem of motion planning of anthropomorphical mechanical hands avoiding collisions. The proposed approach tries to mimic the real human hand workspace, but reducing the dimension of the search ...
  • Efficient multiprocessing architectures for spiking neural network emulation based on configurable devices 

    Sánchez Rivera, Giovanny (Universitat Politècnica de Catalunya, 2014-06-12)
    Tesi
    Accés obert
    The exploration of the dynamics of bioinspired neural networks has allowed neuroscientists to understand some clues and structures of the brain. Electronic neural network implementations are useful tools for this exploration. ...
  • Efficient numerical integration of Perzyna viscoplasticity, with application to rock slope stability using zero-thickness interface elements 

    Aliguer Piferrer, Ignasi; Carol, Ignacio (CRC Press, 2014)
    Text en actes de congrés
    Accés obert
    In this paper, Perzyna-type viscoplastic rate equations are integrated for a time step by considering the step as stress-driven. Depending on how the increment is imposed (constant, linear etc.), different strategies arise. ...
  • Efficient on-line monitoring of water quality using automated measuring stations 

    Plana Puig, Queralt (Universitat Politècnica de Catalunya, 2013-02)
    Projecte Final de Màster Oficial
    Accés obert
    [ANGLÈS] Automated Measuring Stations for river quality monitoring have been used to generate on-line measurements of water quality variables. Even though a high degree of automation has been implemented at the levels ...
  • Efficient openMP over sequentially consistent distributed shared memory systems 

    Costa Prats, Juan José (Universitat Politècnica de Catalunya, 2011-07-20)
    Tesi
    Accés obert
    Nowadays clusters are one of the most used platforms in High Performance Computing and most programmers use the Message Passing Interface (MPI) library to program their applications in these distributed platforms getting ...
  • Efficient operation of photo-Fenton process for the treatment of emerging contaminants in water solutions 

    Yamal Turbay, Evelyn (Universitat Politècnica de Catalunya, 2013-10-24)
    Tesi
    Accés obert
    The growth of population density in some areas of the planet and the increasing fast advances in technology and energy issues, have resulted in a remarkable increment in the necessity for goods and services, with a subsequent ...
  • Efficient optimal sensor placement for structural model based diagnosis 

    Rosich Oliva, Albert; Yassine, Abed Alrahim; Ploix, Stéphane (2010)
    Text en actes de congrés
    Accés restringit per política de l'editorial
    This work aims to study which sensors are required to be installed in a process in order to improve certain fault diagnosis specifications. Especially, the present method is based on structural models, thus system models ...
  • Efficient packet sampling for accurate traffic measurements 

    Raspall Chaure, Frederic (2011-11-30)
    Article
    Accés restringit per política de l'editorial
    Packet sampling is needed to measure network traffic scalably at high speeds. While many sampled-based measurement techniques have been developed in the recent past, most approaches select packets uniformly, without regard ...
  • Efficient parallel construction of suffix trees for genomes larger than main memory 

    Comin, Matteo; Farreras Esclusa, Montserrat (ACM, 2013)
    Text en actes de congrés
    Accés restringit per política de l'editorial
    The construction of suffix tree for very long sequences is essential for many applications, and it plays a central role in the bioinformatic domain. With the advent of modern sequencing technologies, biological sequence ...
  • Efficient parametric characterization of the dynamic performance of an RFID IC 

    Capdevila Cascante, Santiago; Jofre Roca, Lluís; Romeu Robert, Jordi; Bolomey, J.Ch (2012)
    Article
    Accés restringit per política de l'editorial
    In this letter, a measurement technique for a complete parametric characterization of the input impedance of an RFID IC is presented. The use of an SPDT switch to modulate the signal from the network analyzer provides ...
  • Efficient power management based on a distributed queuing MAC for wireless sensor networks 

    Otal, B; Verikoukis, Christos; Alonso Zárate, Luis Gonzaga (Institute of Electrical and Electronics Engineers (IEEE), 2007)
    Comunicació de congrés
    Accés restringit per política de l'editorial
    Significant power is consumed at a sensor node when it either transmits a packet or when it receives a packet. In this paper, we study energy efficiency as a function of the number of sensors in the network and the payload ...
  • Efficient Predictive Control for polytopic systems: application to the four-tank system 

    Acevedo Valle, Juan Manuel (Universitat Politècnica de Catalunya, 2014-06)
    Projecte Final de Màster Oficial
    Accés restringit per decisió de l'autor
    The present work proposes to develop a Fault Tolerant Control strategy based on Robust Efficient Predictive Control for non-linear systems that can be modeled using a polytopic model. The proposed Efficient Predictive ...
  • Efficient preliminary floating offshore wind turbine design and testing methodologies and application to a concrete spar design 

    Matha, Denis; Sandner, Frank; Molins i Borrell, Climent; Campos Hortigüela, Alexis; Cheng, Po Wen (Royal Society, 2015-02)
    Article
    Accés obert
    The current key challenge in the floating offshore wind turbine industry and research is on designing economic floating systems that can compete with fixed-bottom offshore turbines in terms of levelized cost of energy. The ...