Ara es mostren els items 1925-1944 de 92777

  • A fractal fragmentation model for rockfalls 

    Ruiz Carulla, Roger; Corominas Dulcet, Jordi; Mavrouli, Olga Christina (2017-06)
    Article
    Accés restringit per política de l'editorial
    The impact-induced rock mass fragmentation in a rockfall is analyzed by comparing the in situ block size distribution (IBSD) of the rock mass detached from the cliff face and the resultant rockfall block size distribution ...
  • A fractal model to describe the evolution of multiphase flow properties during mineral dissolution 

    Guarracino, Luis; Roetting, Tobias Stefan; Carrera Ramírez, Jesús (Elsevier, 2014-05-01)
    Article
    Accés restringit per política de l'editorial
    Understanding the changes in multiphase flow parameters caused by mineral dissolution-precipitation is required for multiple applications ranging from geological storage of CO2, enhanced geothermal energy production or ...
  • A fractional-step method for the incompressible Navier-Stokes equations related to a predictor-multicorrector algorithm 

    Blasco Lorente, Jorge; Codina, Ramon; Huerta, Antonio (1998-12)
    Article
    Accés obert
    An implicit fractional-step method for the numerical solution of the time-dependent incompressible Navier-Stokes equations in primitive variables is studied in this paper. The method, which is first-order-accurate in the ...
  • A frame element model for the analysis of reinforced concrete structures under shear and bending 

    Mohr, Stefen; Bairán García, Jesús Miguel; Marí Bernat, Antonio Ricardo (2010-10-01)
    Article
    Accés restringit per política de l'editorial
    Modeling the response of reinforced concrete structures under combined shear and normal forces involves handling the anisotropic behavior that takes place in the post-cracked and ultimate ranges. Current 2D (plane-stress ...
  • A Frame-dependent oracle for linear hierarchical radiosity: a step towards frame-to-frame 

    Martín Campos, Ignacio Clemente; Tost Pardell, Daniela; Pueyo Sánchez, Xavier (1996-01)
    Report de recerca
    Accés obert
    A frame-based oracle for Hierarchical Radiosity (HR) is proposed which takes into account the Gouraud shading interpolated intensity values mapped from the radiosities. The algorithm is based on a linear approximation ...
  • A framework based on a fittingness factor to enable efficient exploitation of spectrum opportunities in cognitive radio networks 

    Bouali, Faouzi; Sallent Roig, José Oriol; Pérez Romero, Jordi; Agustí Comes, Ramon (2011)
    Text en actes de congrés
    Accés obert
    In order to increase CRs (Cognitive Radios) operation efficiency, there has been an interest in increasing awareness level about spectrum utilisation. In this respect, this paper proposes a new fittingness factor concept ...
  • A Framework for animation in global illumination environments 

    Martín Campos, Ignacio Clemente; Pueyo, X; Tost Pardell, Daniela (1998-06)
    Text en actes de congrés
    Accés obert
    This paper proposes a framework for the production of animations of high quality radiosity environments which makes use of the a-priori knowledge of the dynamic properties of the scene in order to exploit temporal ...
  • A framework for building OLAP cubes on graphs 

    Ghrab, Amine; Romero Moral, Óscar; Skhiri, Sabri; Vaisman, Alejandro; Zimányi, Esteban (Springer, 2015)
    Text en actes de congrés
    Accés obert
    Graphs are widespread structures providing a powerful abstraction for modeling networked data. Large and complex graphs have emerged in various domains such as social networks, bioinformatics, and chemical data. However, ...
  • A framework for designing new products and services 

    Huertas Garcia, Rubén; Consolación Segura, Carolina María (2009)
    Article
    Accés restringit per política de l'editorial
    Customer satisfaction is an important objective in all areas of business and services. A key issue in today's design activities is to achieve customer satisfaction in an economical way by finding the attributes that are ...
  • A framework for developing finite element codes for multi-disciplinary applications. 

    Dadvand, Pooyan (Universitat Politècnica de Catalunya, 2007-07-13)
    Tesi
    Accés obert
    The world of computing simulation has experienced great progresses in recent years and requires more exigent multidisciplinary challenges to satisfy the new upcoming demands. Increasing the importance of solving ...
  • A framework for dynamic network architecture and topology optimization 

    Shafigh, Alireza Shams; Lorenzo, Beatriz; Glisic, Savo; Pérez Romero, Jordi; DaSilva, Luiz A.; MacKenzie, Allen B.; Röning, Juha (2016-04)
    Article
    Accés obert
    A new paradigm in wireless network access is presented and analyzed. In this concept, certain classes of wireless terminals can be turned temporarily into an access point (AP) anytime while connected to the Internet. This ...
  • A framework for effective implementation of lean production in small and medium-sized enterprises 

    Belhadi, Amine; Touriki, Fatima Ezzahra; El Fezazi, Said (OmniaScience, 2016-10)
    Article
    Accés obert
    Purpose: The present paper aims at developing an effective framework including all the components required for implementing lean production properly in Small and Medium-sized Enterprises. Design/methodology/approach: ...
  • A framework for efficient execution of matrix computations 

    Herrero Zaragoza, Jose Ramón (Universitat Politècnica de Catalunya, 2006-07-07)
    Tesi
    Accés obert
    Matrix computations lie at the heart of most scientific computational tasks. The solution of linear systems of equations is a very frequent operation in many fields in science, engineering, surveying, physics and ...
  • A framework for integrating data alignment, distribution, and redistribution in distributed memory multiprocessors 

    García Almiñana, Jordi; Ayguadé Parra, Eduard; Labarta Mancho, Jesús José (2001-04)
    Article
    Accés restringit per política de l'editorial
    Parallel architectures with physically distributed memory provide a cost-effective scalability to solve many large scale scientific problems. However, these systems are very difficult to program and tune. In these systems, ...
  • A framework for joint design of pilot sequence and linear precoder 

    Pastore, Adriano; Joham, Michael; Rodríguez Fonollosa, Javier (2016-09-01)
    Article
    Accés obert
    Most performance measures of pilot-assisted multiple-input multiple-output systems are functions of the linear precoder and the pilot sequence. A framework for the optimization of these two parameters is proposed, based ...
  • A framework for multidimensional design of data warehouses from ontologies 

    Romero Moral, Óscar; Abelló Gamazo, Alberto (2009-07)
    Report de recerca
    Accés obert
    Some research efforts have proposed the automation of the data warehouse design in order to free this task of being (completely) performed by an expert and facilitate the whole process. Most advanced approaches exclusively ...
  • A framework for multidimensional indexes on distributed and highly-available data stores 

    Cugnasco, Cesare; Becerra Fontal, Yolanda (Barcelona Supercomputing Center, 2015-05-05)
    Text en actes de congrés
    Accés obert
    No-relational databases are nowadays a common solution when dealing with a huge data set and massive query workload. These systems have been redesigned from scratch in order to achieve scalability and availability at ...
  • A framework for multidimensional modelling of spectrum occupancy in the simulation of cognitive radio systems 

    López Benitez, Miguel; Casadevall Palacio, Fernando José (Institute of Electrical and Electronics Engineers (IEEE), 2014)
    Text en actes de congrés
    Accés restringit per política de l'editorial
    Spectrum models play a key role in the research of Dynamic Spectrum Access/Cognitive Radio (DSA/CR) systems. Models existing to date are able to characterise the statistical properties of spectrum occupancy in only one ...
  • A framework for network traffic analysis using GPUs 

    Suñé Clos, Marc (Universitat Politècnica de Catalunya, 2010-01)
    Projecte/Treball Final de Carrera
    Accés obert
    During the last years the computer networks have become an important part of our society. Networks have kept growing in size and complexity, making more complex its management and traffic monitoring and analysis processes, ...
  • A framework for rendering, simulation and animation of crowds 

    Pelechano Gómez, Núria; Spanlang, Bernhard; Beacco Porres, Alejandro (2009)
    Text en actes de congrés
    Accés restringit per política de l'editorial
    Real-time crowd simulation for virtual environment applications requires not only navigation and locomotion in large environments while avoiding obstacles and agents, but also rendering high quality 3D fully articulated ...