Now showing items 12-31 of 57

    • CART, a Decision SLA Model for SaaS Providers to Keep QoS Regarding Availability and Performance 

      Mateo Fornés, Jordi; Solsona Tehàs, Francesc; Vilaplana Mayoral, Jordi; Teixidó Torrelles, Ivan; Rius Torrentó, Josep Maria (IEEE, 2019)
      Cloud systems are becoming a powerful tool for business. The evidence of the advantages of offering infrastructure as a service (IaaS), platform as a service (PaaS), or software as a service (SaaS) is overwhelming. ...
    • Characterization of the CPAP-treated patient population in Catalonia 

      Turino, Cecilia; Bertran, Sandra; Gavaldá, Ricard; Teixidó Torrelles, Ivan; Woehrle, Holger; Rué i Monné, Montserrat; Solsona Tehàs, Francesc; Escarrabill, Joan; Colls, Cristina; García-Altés, Anna; Batlle Garcia, Jordi de; Sánchez de la Torre, Manuel; Barbé Illa, Ferran (Public Library of Science, 2017)
      There are different phenotypes of obstructive sleep apnoea (OSA), many of which have not been characterised. Identification of these different phenotypes is important in defining prognosis and guiding the therapeutic ...
    • CISNE: A New Integral Approach for Scheduling Parallel Applications on Non-dedicated Clusters 

      Hanzich, Mauricio; Giné, Francesc; Hernández Budé, Porfidio; Solsona Tehàs, Francesc; Luque, Emilio (Springer Verlag, 2005)
      Our main interest is oriented towards keeping both local and parallel jobs together in a non-dedicated cluster. In order to obtain some profits from the parallel applications, it is important to consider time and space ...
    • Computer-assisted initial diagnosis of rare diseases 

      Alves, Rui; Piñol, Marc; Vilaplana Mayoral, Jordi; Teixidó Torrelles, Ivan; Cruz, Joaquim; Comas, Jorge; Vilaprinyo Terré, Ester; Sorribas Tello, Albert; Solsona Tehàs, Francesc (PeerJ, 2016)
      Introduction. Most documented rare diseases have genetic origin. Because of their low individual frequency, an initial diagnosis based on phenotypic symptoms is not always easy, as practitioners might never have been exposed ...
    • Cooperating Coscheduling in a Non-dedicated Cluster 

      Giné, Francesc; Solsona Tehàs, Francesc; Hernandez, Porfidio; Luque, Emilio (Springer Verlag, 2003)
      Our research is focussed on keeping both local and parallel jobs together in a time-sharing NOW. In such systems, new scheduling approaches are needed to allocate the underloaded resources among parallel jobs. In this ...
    • Cooperative scheduling mechanism for large-scale peer-to-peer computing systems 

      Rius Torrentó, Josep Maria; Cores Prado, Fernando; Solsona Tehàs, Francesc (Elsevier, 2013)
      Over recent years, peer-to-peer (P2P) systems have become an important part of Internet. Millions of users have been attracted to their structures and services. P2P computing is a distributed computing paradigm that uses ...
    • Coscheduling and Multiprogramming Level in a Non-dedicated Cluster 

      Hanzich, Mauricio; Giné, Francesc; Hernandez, Porfidio; Solsona Tehàs, Francesc; Luque, Emilio (Springer Verlag, 2004)
      Our interest is oriented towards keeping both local and parallel jobs together in a time-sharing non-dedicated cluster. In such systems, dynamic coscheduling techniques, without memory restriction, that consider the ...
    • Coscheduling under Memory Constraints in a NOW 

      Giné, Francesc; Solsona Tehàs, Francesc; Hernández Budé, Porfidio; Luque, Emilio (Springer Verlag, 2001)
      Networks of Workstations (NOW) have become important and cost-effective parallel platforms for scientific computations. In practice, a NOW system is heterogeneous and non-dedicated. These two unique factors make scheduling ...
    • Database constraints applied to metabolic pathway reconstruction tools 

      Vilaplana Mayoral, Jordi; Solsona Tehàs, Francesc; Teixidó Torrelles, Ivan; Usié Chimenos, Anabel; Karathia, Hiren; Alves, Rui; Mateo Fornés, Jordi (Hindawi Publishing Corporation, 2014)
      Our group developed two biological applications, Biblio-MetReS and Homol-MetReS, accessing the same database of organisms with annotated genes. Biblio-MetReS is a data-mining application that facilitates the reconstruction ...
    • Dealing with Memory Constraints in a Non-Dedicated Linux Cluster 

      Giné, Francesc; Solsona Tehàs, Francesc; Hernandez, Porfidio; Luque, Emilio (SAGE, 2003)
      Our research is focused on keeping both local and parallel jobs together in a non-dedicated cluster and scheduling them efficiently. In such a system, memory becomes a critical resource for both kinds of job. Thus, the ...
    • Design of a P2P network that protects users’ privacy in front of Web Search Engines 

      Romero-Tris, Cristina; Castellà Martínez, Damià; Viejo Galicia, Alexandre; Castellà Roca, Jordi; Solsona Tehàs, Francesc; Mateo-Sanz, Josep María (Elsevier, 2015)
      Web Search Engines store and analyze queries made by their users in order to build their profiles and offer them personalized search results (i.e., results are ranked according to each user’s preferences). Even though ...
    • Designing an effective P2P system for a VoD system to exploit the multicast communication 

      Yang, X. Y.; Cores Prado, Fernando; Hernández Budé, Porfidio; Ripoll, A.; Luque, Emilio (Elsevier, 2010)
      A distributed video-on-demand system (DVoD) with multiple server-nodes is a cost-effective and faulttolerant solution for a high scalable enterprise video-on-demand (VoD) system. However, such a serveroriented design is ...
    • DisCoP2P: an efficient P2P computing overlay 

      Sentís, Josep M.; Solsona Tehàs, Francesc; Castellà Martínez, Damià; Rius Torrentó, Josep Maria (Springer Verlag, 2014)
      CodiP2P and DisCoP are two peer-to-peer (P2P) computing overlays aimed at sharing computing resources (CPU, Memory, etc.) to execute parallel applications. Their component nodes are basically PC’s and a wide range of ...
    • DisCoP: a P2P framework for managing and searching computing markets 

      Castellà Martínez, Damià; Solsona Tehàs, Francesc; Giné, Francesc (Springer Verlag, 2015)
      Peer-to-Peer (P2P) computing, the harnessing of idle CPU cycles through the Internet, offers new research challenges in the domain of distributed computing. This paper proposes an efficient, dynamic and scalable overlay ...
    • Double P-Tree: A Distributed Architecture for Large-Scale Video-on-Demand 

      Cores Prado, Fernando; Ripoll, A.; Luque, Emilio (Springer Verlag, 2002)
      In order to ensure a more widespread implementation of video-ondemand (VoD) services, it is essential that the design of cost-effective largescale VoD (LVoD) architectures be able to support hundreds of thousands ...
    • Dynamic Distributed Collaborative Merging Policy to Optimize the Multicasting Delivery Scheme 

      Yang, X. Y.; Hernández Budé, Porfidio; Cores Prado, Fernando; Ripoll, A.; Suppi, Remo; Luque, Emilio (Springer Verlag, 2005)
      The advance of Internet 2 and the proliferation of switches and routers with level three functionalities made the multicast one of the most feasible video streaming delivering techniques for the near future. Assuming ...
    • DynaPeer: A Dynamic Peer-to-Peer Based Delivery Scheme for VoD Systems 

      Souza, Leandro; Cores Prado, Fernando; Yang, Xiaoyuan; Ripoll, A. (Springer Verlag, 2007)
      Supporting Video-on-Demand (VoD) services in Internet is still a challenging issue due to high bandwidth requirement of multimedia contents and additional constraints imposed by such environment: higher delays and jitter, ...
    • Efficient Mapping for Message-Passing Applications Using the TTIG Model: A Case Study in Image Processing 

      Roig Mateu, Concepció; Ripoll, A.; Borrás, Javier; Luque, Emilio (Springer Verlag, 2001)
      In this paper we describe the development and performance of an image processing application with functional parallelism within the PVM framework. The temporal behaviour of the application is statically modelled with ...
    • EMPOWERING, a Smart Big Data Framework for Sustainable Electricity Suppliers 

      Mor, Gerard; Vilaplana Mayoral, Jordi; Danov, Stoyan; Cipriano, Jordi; Solsona Tehàs, Francesc; Chemisana Villegas, Daniel (Institute of Electrical and Electronics Engineers (IEEE), 2018)
      This paper presents the EMPOWERING project, a Big Data environment aimed at helping domestic customers to save electricity by managing their consumption positively. This is achieved by improving the information received ...
    • Enhancing throughput for streaming applications running on cluster systems 

      Guirado Fernández, Fernando; Roig Mateu, Concepció; Ripoll, A. (Elsevier, 2013)
      The exploitation of throughput in a parallel application that processes an input data stream is a difficult challenge. For typical coarse-grain applications, where the computation time of tasks is greater than their ...