Listar Departament: Enginyeria i Ciència dels Computadors por título

Mostrando ítems 317-336 de 545

    • openAccess   Intervention AUVs: The Next Challenge 

      Ridao, Pere; Carreras, Marc; Ribas, David; Sanz, Pedro J; Oliver, Gabriel International Federation of Automatic Control (2015)
      While commercially available AUVs are routinely used in survey missions, a new set of applications exist which clearly demand intervention capabilities. The maintenance of: permanent underwater observatories, submerged oil ...

    • openAccess   Introducción a la arquitectura de computadores con QtARMSim y Arduino 

      Barrachina Mir, Sergio; Castillo Catalán, María Isabel; Fabregat Llueca, German; Fernández Fernández, Juan Carlos; León Navarro, Germán; Martí Avilés, José Vicente; Mayo, Rafael; Montoliu Colás, Raul Publicacions de la Universitat Jaume I (2018)

    • openAccess   Introduction to Programming Using Mobile Phones and MIT App Inventor 

      Barrachina Mir, Sergio; Fabregat Llueca, German Institute of Electrical and Electronics Engineers (2020-07-09)
      At the beginning of each year, we ask our new undergraduate students in Computer Engineering if they have ever developed a computer program. Surprisingly, the most frequent answer is no. The few students who have ...

    • openAccess   Investigación práctica en educación : investigación-acción 

      Marqués-Andrés, Mercedes; Ferrandez-Berrueco, Reina TICAI, Sociedad de Educación (2012)
      This paper describes the methodology of action research, an educational research methodology in which professors investigate on their own teaching practices. In this work we also justify the need of using such methodology ...

    • openAccess   Investigación-acción: ¿a qué estamos esperando? 

      Marqués-Andrés, Mercedes JENUI Editores (2021)
      Diez años después de presentar en las JENUI de 2011 el trabajo titulado «Investigación práctica en educación: investigación-acción», sigo viendo fundamental la formación del profesorado en esta metodología. Es un enfoque ...

    • openAccess   Iteration-fusing conjugate gradient for sparse linear systems with MPI + OmpSs 

      Barreda Vayá, Maria; Aliaga Estellés, José Ignacio; Beltran Querol, Vicenç; Casas, Marc Springer (2019-12-10)
      In this paper, we target the parallel solution of sparse linear systems via iterative Krylov subspace-based method enhanced with a block-Jacobi preconditioner on a cluster of multicore processors. In order to tackle ...

    • openAccess   JENewbie 2023 

      Marqués-Andrés, Mercedes; Catalán Carbó, Mar; Corrales-Astorgano, Mario (2023)
      En este artículo se describen los objetivos del taller JENewbie, se explican brevemente los trabajos presentados y se exponen las principales conclusiones obtenidas tras la celebración del mismo.

    • closedAccess   Large-scale linear system solver using secondary storage: self-energy in hybrid nanostructures 

      Badía, José; Movilla, Jose L.; Climente, Juan I.; Castillo Catalán, María Isabel; Marqués-Andrés, Mercedes; Mayo, Rafael; Quintana-Orti, Enrique S.; Planelles, Josep Elsevier (2011-02)
      We present a Fortran library which can be used to solve large-scale dense linear systems, Ax=b. The library is based on the LU decomposition included in the parallel linear algebra library PLAPACK and on its out-of-core ...

    • openAccess   Learning Cognitive-Affective Digital Twins from Social Networks 

      Navarro, Andrea; Berlanga Llavori, Rafael; Museros, Lledó IOS Press (2021-10)
      This paper presents an ongoing project about the implementation of digital twins (DT) for simulating cognitive-affective behaviours in social networks. Our approach relies on a pure data-driven solution, which takes ...

    • openAccess   Learning the visual-oculomotor transformation: Effects on saccade control and space representation 

      Antonelli, Marco; Durán Bosch, Angel Juan; Chinellato, Eris; del Pobil, Angel P. Elsevier (2015-09)
      Active eye movements can be exploited to build a visuomotor representation of the surrounding environment. Maintaining and improving such representation requires to update the internal model involved in the generation of ...

    • closedAccess   Let’s Talk about k-NN for Indoor Positioning: Myths and Facts in RF-based Fingerprinting 

      Torres-Sospedra, Joaquín; Pendão, Cristiano; Silva, Ivo; Meneses, Filipe; Quezada Gaibor, Darwin; Montoliu Colás, Raul; Crivello, Antonino; Barsocchi, Paolo; Pérez-Navarro, Antoni; Moreira, Adriano Institute of Electrical and Electronics Engineers Inc. (2023-09-25)
      Microsoft proposed RADAR in 2000, the first indoor positioning system based on Wi-Fi fingerprinting. Since then, the indoor research community has worked not only to improve the base estimator but also on finding an optimal ...

    • openAccess   Level-3 BLAS on a GPU: Picking the Low Hanging Fruit 

      Quintana-Ortí, Gregorio; Van de Geijn, Robert A. Departament d' Enginyeria i Ciència dels Computadors, Universitat Jaume I (2009-04)
      The arrival of hardware accelerators has created a new gold rush to be the rst to deliver their promise of high performance for numerical applications. Since they are relatively hard to program, with limited language ...

    • closedAccess   Leveraging Task-Parallelism in Energy-Efficient ILU Preconditioners 

      Aliaga Estellés, José Ignacio; Dolz, Manuel F.; Martín Huertas, Alberto F.; Mayo, Rafael; Quintana-Orti, Enrique S. Springer Berlin Heidelberg (2012)
      We analyze the energy-performance balance of a task-parallel computation of an ILU-based preconditioner for the solution of sparse linear systems on multi-core processors. In particular, we elaborate a theoretical model ...

    • closedAccess   Leveraging task-parallelism in message-passing dense matrix factorizations using SMPSs 

      Martín, Alberto F.; Reyes, Ruymán; Badía Sala, Rosa María; Quintana-Orti, Enrique S. Elsevier (2014)
      In this paper, we investigate how to exploit task-parallelism during the execution of the Cholesky factorization on clusters of multicore processors with the SMPSs programming model. Our analysis reveals that the major ...

    • openAccess   Leveraging workflow control patterns in the domain of clinical practice guidelines 

      Kaiser, Katharina; Marcos, Mar BioMed Central Ltd (2016-02-10)
      Background: Clinical practice guidelines (CPGs) include recommendations describing appropriate care for the management of patients with a specific clinical condition. A number of representation languages have been developed ...

    • closedAccess   Load-balancing Sparse Matrix Vector Product Kernels on GPUs 

      Anzt, Hartwig; Cojean, Terry; Yen-Chen, Chen; Dongarra, Jack; Flegar, Goran; Nayak, Pratik; Tomov, Stanimire; Tsai, Yuhsiang M.; Wang, Weichung Association for Computing Machinery (ACM) (2020-03)
      Efficient processing of Irregular Matrices on Single Instruction, Multiple Data (SIMD)-type architectures is a persistent challenge. Resolving it requires innovations in the development of data formats, computational ...

    • openAccess   Localization of Mobile sensors and actuators for intervention in low-visibility conditions: the ZigBee fingerprinting approach 

      Martí Avilés, José Vicente; Sales Gil, Jorge; Marin, Raul; Jiménez Ruiz, Ernesto Hindawi Publishing Corporation (2012)
      Indoor localization in smoke conditions is one of the EU GUARDIANS project goals. When smoke density grows, optical sensors such as laser range finders and cameras cease to be efficient. Zigbee sensor networks provide an ...

    • openAccess   Look-ahead in the two-sided reduction to compact band forms for symmetric eigenvalue problems and the SVD 

      Rodríguez Sánchez, Rafael; Catalán, Sandra; Herrero, José R.; Quintana-Orti, Enrique S.; Tomás Domínguez, Andrés Enrique Springer Verlag (2019)
      We address the reduction to compact band forms, via unitary similarity transformations, for the solution of symmetric eigenvalue problems and the computation of the singular value decomposition (SVD). Concretely, in the ...

    • openAccess   Machine learning-based prediction model for battery levels in IoT devices using meteorological variables 

      Zurita Macias, Juan Emilio; Trilles, Sergio Elsevier (2024-04-01)
      Efficient energy management is vital for the sustainability of IoT devices employing solar harvesting systems, particularly to circumvent battery depletion during periods of diminished solar incidence. Embracing the ...

    • closedAccess   Malleability Implementation in a MPI Iterative Method 

      Martín Álvarez, Iker; Aliaga Estellés, José Ignacio; Castillo Catalán, María Isabel; Mayo, Rafael; Iserte, Sergio IEEE (2021-09)
      In this poster is evaluated the data redistribution stage for two malleable versions of the Conjugate Gradient. One version is based on synchronous communications, while the other one uses asynchronous communications to ...