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Ara es mostren els items 13961-13980 de 245805

    • An approach to validation of deductive conceptual models 

      Costal Costa, Dolors (Universitat Politècnica de Catalunya. Departament de Llenguatges i Sistemes Informàtics, 1991)
      Text en actes de congrés
      Accés obert
      We propose an approach to validation of deductive conceptual models. This validation is performed through plan generation. The objective of plan generation is to determine sequences of events that lead to a certain goal ...

    • An approach to verification and validation of MHD codes for fusion applications 

      Smolentsev, S.; Badia, Santiago; Bhattacharyayd, R.; Mas de les Valls Ortiz, Elisabet; Patel, A. (2015-11)
      Article
      Accés obert
      We propose a new activity on verification and validation (V&V) of MHD codes presently employed by the fusion community as a predictive capability tool for liquid metal cooling applications, such as liquid metal blankets. ...

    • An approach to visual interaction analysis of urban spaces: Central Barcelona as a case study 

      Clua Uceda, Álvaro; Crosas Armengol, Carles; Parcerisa Bundó, Josep (2021-03-28)
      Article
      Accés obert
      Beyond the binary, traditional, figure-ground reading of urban patterns, this research presents a graduated expression of the geometry of urban spaces from a perceptive point of view. This highlights the spatial relationships ...

    • An approach to website schema.org design 

      Tort Pugibet, Albert; Olivé Ramon, Antoni (Elsevier, 2015)
      Article
      Accés obert
      Schema.org offers to web developers the opportunity to enrich a website's content with microdata and schema.org. For large websites, implementing microdata can take a lot of time. In general, it is necessary to perform two ...

    • An appropriate index to assess the global cancellation level of the harmonic currents consumed by a set of single-phase uncontrolled rectifiers and a set of fluorescent lamps 

      Mesas García, Juan José; Sainz Sapera, Luis; Monjo Mur, Lluís; Pedra Durán, Joaquim (2022-06-13)
      Article
      Accés obert
      An in-depth study of harmonic current reduction in European commercial buildings due to the harmonic cancellation effect when a set of single-phase uncontrolled rectifiers and a set of fluorescent lamps are connected at ...

    • An appropriate way to extend the Banzhaf index for multiple levels of approval 

      Freixas Bosch, Josep; Pons Vallès, Montserrat (Springer Nature, 2021-01-03)
      Article
      Accés obert
      The Banzhaf power index for games admits several extensions if the players have more than two ordered voting options. In this paper we prove that the most intu-itive and recognized extension ...

    • An approximate algorithm for median graph computation using graph embedding 

      Ferrer Sumsi, Miquel; Valveny, Ernest; Serratosa Casanelles, Francesc; Riesen, Kaspar; Bunke, Horst (Institute of Electrical and Electronics Engineers (IEEE), 2008)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      Graphs are powerful data structures that have many attractive properties for object representation. However, some basic operations are difficult to define and implement, for instance, how to obtain a representative of a ...

    • An approximate analysis of synchronous multiple bus 

      González Peña, Luis Eduardo; Sanvicente Gargallo, Emilio (1985)
      Report de recerca
      Accés obert
      This paper presents an approximate analytic model for evaluating the performance of a loosely coupled multiprocessor architecture whose memory, organized in modules, is shared by all the processors. Each memory module (Mi) ...

    • An approximate expression to estimate signal-to-noise improvement in cylindrical near-field measurements 

      Romeu Robert, Jordi; Jofre Roca, Lluís; Cardama Aznar, Ángel (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 1994-07-01)
      Article
      Accés obert
      A very simple approximate expression for the process gain (PG) for the cylindrical case is derived. The different approximations and assumptions required to obtain this expression are shown. This expression might be useful ...

    • An approximate structure theorem for small sumsets 

      Campos, Marcelo; Coulson, Matthew John; Serra Albó, Oriol; Wötzel, Maximilian (Birkhäuser, 2021-08-24)
      Capítol de llibre
      Accés obert
      Let A and B be randomly chosen s-subsets of the first n integers such that their sumset A+B has size at most Ks. We show that asymptotically almost surely A and B are almost fully contained in arithmetic progressions PA ...

    • An approximated analytical model for pole-to-ground faults in symmetrical monopole MMC-HVDC systems 

      Albernaz Lacerda Freitas, Vinícius; Machado Monaro, Renato; Campos Gaona, David; Peña Alzola, Rafael; Coury, Denis V. (Institute of Electrical and Electronics Engineers (IEEE), 2021-12)
      Article
      Accés obert
      Developing pole-to-ground (PG) fault models for Modular Multilevel Converters (MMC) is not straight forward due to the fault asymmetry and converter switching concerning blocking characteristics. Various studies have been ...

    • An approximation of predictive maintenance for a plane propeller through sensorization, vibration analysis and Machine Learning 

      Garcia Valle, Carla (Universitat Politècnica de Catalunya, 2022-09-08)
      Treball Final de Grau
      Accés obert
      Realitzat a/amb:   Centre Internacional de Mètodes Numèrics a l'Enginyeria
      In industrial machinery, failure will eventually occur, either in the short term due to manufacturing defects, or in the long run due to accumulations of debris, deterioration of internal parts, or purely from wear and ...

    • An approximation of the K-function for the study of binary images 

      Ayala Gallego, Guillermo; Simó Vidal, Amelia (Institut d'estadística de Catalunya, 1993)
      Article
      Accés obert
      Jensen et al. (1990) gave an exact expression for the K-function in non-overlapping Boolean models. The present study proposes and evaluates an approximate expression for the K-function in overlapping isotropic Boolean ...

    • An approximation to technical efficiency in Spanish toll roads through a DEA approach 

      Regalado López, Francisco Javier; Campos Cacheda, Jose Magin (Universidad de Oviedo, 2018)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      This research has an academic approach is to know the relative efficiency of toll roads managed by the Administración General del Estado through a DEA approach. The global technical efficiency, local pure technical efficiency ...

    • An approximation to technical efficiency in Spanish toll roads through a DEA approach 

      Regalado López, Francisco Javier; Campos Cacheda, Jose Magin (Elsevier, 2018-11)
      Article
      Accés obert
      This research has an academic approach to know the relative efficiency of toll roads managed by the Administración General del Estado through a DEA approach. The global technical efficiency, local pure technical efficiency ...

    • An arbitrary lagrangian-eulerian (ale) approach for the modeling of tensión leveling processes 

      Steinwender, Lorenz; Kainz, Alexander; Krimpelstätter, Konrad; Zeman, Klaus (CIMNE, 2011)
      Text en actes de congrés
      Accés obert
      Strip flatness and surface quality are crucial factors for the production of high-quality cold-rolled metal strip. Tension leveling (employed as one of the final steps in continuous galvanizing and finishing lines) improves ...

    • An architectural journey into RISC architectures for HPC workloads 

      Xu Lin, Ying Hao (Universitat Politècnica de Catalunya, 2019-01-28)
      Projecte Final de Màster Oficial
      Accés obert
      Realitzat a/amb:   Barcelona Supercomputing Center
      The thesis evaluates the current state-of-the-art of RISC architectures in HPC. Studying the performance, power, and energy to solution in heterogeneous SoCs. For the evaluation 2 arm platforms (CPU+GPU, CPU+FPGA), 1 RISC-V ...

    • An architectural schema for performance prediction using machine learning in the fog-to-cloud paradigm 

      Sengupta, Souvik; García Almiñana, Jordi; Masip Bruin, Xavier; Prieto González, Andrés (2019)
      Text en actes de congrés
      Accés obert
      The Fog-to-Cloud (F2C) paradigm is emerging to both provide higher functional efficiency for latency-sensitive services and also help modern computing systems to be more intelligent. As it is still in its infancy, the ...

    • An architecture analysis for millimeter-wave optically steerable antenna array 

      Ballesteros Sánchez, Christian; Maestre, Marcos; Santos Blanco, M. Concepción; Romeu Robert, Jordi; Jofre Roca, Lluís (Institute of Electrical and Electronics Engineers (IEEE), 2019)
      Comunicació de congrés
      Accés restringit per política de l'editorial
      A lens-based integrated photodiode-antenna array for a Radio over Fiber (RoF) 5G wireless base station at millimeter-wave frequencies is proposed and analyzed. The elements of the array are based on slot bow-tie antennas ...

    • An architecture for a faceted and multiple linked 

      Cuello Butelo, Antonio (Universitat Politècnica de Catalunya, 2008-08)
      Projecte Final de Màster Oficial
      Accés restringit per acord de confidencialitat