Now showing items 1-20 of 644

    • 128 x 128 CMOS Image Sensor With Analog Memory for Synchronous Image Capture 

      Chapinal, Genis; Bota, Sebastian A.; Moreno, Mauricio; Palacín Roca, Jordi; Herms, Atilà (Institute of Electrical and Electronic Engineers, 2002)
      A 128 x 128 CMOS imager that permits synchronous capture is presented. The sensor combines the best of CMOS imagers (low-power, random readout, nondestructive readout, single supply voltage…) and synchronous capture ...
    • A correlation of the convective heat transfer coefficient between an air flow and a phase change material plate 

      Gracia Cuesta, Alvaro de; David, Damien; Castell, Albert; Cabeza, Luisa F.; Virgone, Joseph (Elsevier, 2013)
      This paper provides a new correlation to determine the heat transfer coefficient between an air flow and a plate made of phase change material (PCM). This correlation was built for the simulation of heat storage units ...
    • A Design Process for Exhibiting Design Choices and Trade-offs in (potentially) Conflicting User Interface Guidelines 

      Masip Ardévol, Llúcia; Martinie, Célia; Winckler, Marco; Palanque, Philippe; Granollers i Saltiveri, Toni; Oliva Solé, Marta (Springer Verlag, 2012)
      In the last decades a huge amount of knowledge about user interface design has been gathered in the form of guidelines. Quite often, guidelines are compiled according to user interface properties (e.g. usability, ...
    • A Fully Scalable and Distributed Architecture for Video-on-Demand 

      Cores Prado, Fernando; Ripoll, A.; Luque, Emilio (Springer Verlag, 2001)
      In spite of the attractiveness of Video-on-demand (VoD) services, their implantation to the present has not been as widespread as could have been desired due to centralized VoD systems have a limited streaming capacity ...
    • A Green Strategy for Federated and Heterogeneous Clouds with Communicating Workloads 

      Mateo, Jordi; Vilaplana, Jordi; Solsona Tehàs, Francesc; Pla Aragonés, Lluís Miquel; Lérida Monsó, Josep Lluís (Hindawi Publishing Corporation, 2014-07)
      Providers of cloud environments must tackle the challenge of configuring their system to provide maximal performance while minimizing the cost of resources used. However, at the same time, they must guarantee an SLA ...
    • A Hybrid Approach for Modelling Early Prototype Evaluation Under User-Centred Design Through Association Rules 

      González Azconegui, María Paula; Granollers i Saltiveri, Toni; Lorés Vidal, Jesús (Springer Verlag, 2007)
      One of the main activities in User Centred Design (UCD) is prototype evaluation, which is traditionally performed by means of an Evaluation Stage that looks for the redefinition of the prototype requirements, involving ...
    • A logic programming framework for possibilistic argumentation: formalization and logical properties 

      Alsinet, Teresa; Chesñevar, Carlos Iván; Godo i Lacasa, Lluís; Simari, Guillermo Ricardo (Elsevier, 2008)
      In the last decade defeasible argumentation frameworks have evolved to become a sound setting to formalize commonsense, qualitative reasoning. The logic programming paradigm has shown to be particularly useful for ...
    • A Max-SAT Solver with Lazy Data Structures 

      Alsinet, Teresa; Manyà Serres, Felip; Planes Cid, Jordi (Springer Verlag, 2004)
      We present a new branch and bound algorithm for Max-SAT which incorporates original lazy data structures, a new variable selection heuristics and a lower bound of better quality. We provide experimental evidence that ...
    • A methodology for developing Distributed Generation scenarios in urban areas using geographical information systems 

      Medrano Martorell, Marc; Brouwer, Jack; Carreras-Sospedra, Marc; Rodriguez, Marco A.; Dabdub, Donald; Samuelsen, G. Scott (Inderscience, 2008)
      The implementation of Distributed Generation (DG) may lead to increased pollutant emissions that adversely affect air quality. This work presents a systematic methodology to characterise DG installation in urban basins. ...
    • A mobile robot agent for gas leak source detection 

      Martínez Lacasa, Daniel; Pallejà Cabrè, Tomàs; Moreno Blanc, Javier; Tresánchez Ribes, Marcel; Teixidó Cairol, Mercè; Font Calafell, Davinia; Pardo, Antonio; Marco, Santiago; Palacín Roca, Jordi (Springer International Publishing Switzerland, 2014)
      This paper presents an autonomous agent for gas leak source detec-tion. The main objective of the robot is to estimate the localization of the gas leak source in an indoor environment without any human intervention. The ...
    • A MOF-Compliant Approach to Software Quality Modeling 

      Burgués, Xavier; Franch, Xavier; Ribó i Balust, Josep M. (Josep Maria) (Springer Verlag, 2005)
      Software quality is a many-faceted concept that depends on the kind of artifact to be measured, the context where measurement takes place, the quality framework used, and others. Furthermore, there is a great deal of ...
    • A New Task Graph Model for Mapping Message Passing Applications 

      Roig Mateu, Concepció; Ripoll, A.; Guirado Fernández, Fernando (Institute of Electrical and Electronics Engineers, 2007)
      The exploitation of parallelism in a message passing platform implies a previous modeling phase of the parallel application as a task graph, which properly reflects its temporal behavior. In this paper, we analyze the ...
    • A novel numerical methodology for modelling simple vapour compression refrigeration system 

      Zsembinszki, Gabriel; Gracia Cuesta, Alvaro de; Moreno Argilés, Pere; Rovira, Ricard; González, Miguel Ángel; Cabeza, Luisa F. (Elsevier, 2017)
      The extended use of cooling and refrigeration systems in industrial, building and transport sectors may have a negative impact on the climate change and ozone depletion. Thus, important aspects related to these systems, ...
    • A Pipeline-Based Approach for Mapping Message-Passing Applications with an Input Data Stream 

      Guirado Fernández, Fernando; Ripoll, A.; Roig Mateu, Concepció; Luque, Emilio (Springer Verlag, 2004)
      Pipeline applications simultaneously execute different instances from an input data set. Performance parameters for such applications are latency (the time taken to process an individual data set) and throughput (the ...
    • A Platform for Object-Action Semantic Web Interaction 

      García González, Roberto; Gimeno Illa, Juan Manuel; Perdrix Sapiña, Ferran; Gil Iranzo, Rosa María; Oliva Solé, Marta (Springer Verlag, 2008)
      Semantic Web applications tests show that their usability is seriously compromised. This motivates the exploration of alternative interaction paradigms, different from the "traditional" Web or desktop applications ones. ...
    • A production planning model considering uncertain demand using two-stage stochastic programming in a fresh vegetable supply chain context 

      Mateo, Jordi; Pla Aragonés, Lluís Miquel; Solsona Tehàs, Francesc; Pagès Bernaus, Adela (SpringerOpen, 2016-06-22)
      Production planning models are achieving more interest for being used in the primary sector of the economy. The proposed model relies on the formulation of a location model representing a set of farms susceptible of being ...
    • A proposal for automatic fruit harvesting by combining a low cost stereovision camera and a robotic arm 

      Font Calafell, Davinia; Pallejà Cabrè, Tomàs; Tresánchez Ribes, Marcel; Runcan Marius, David; Moreno Blanc, Javier; Martínez Lacasa, Daniel; Teixidó Cairol, Mercè; Palacín Roca, Jordi (MDPI, 2014)
      This paper proposes the development of an automatic fruit harvesting system by combining a low cost stereovision camera and a robotic arm placed in the gripper tool. The stereovision camera is used to estimate the size, ...
    • A Proposal of a multi-agent system implementation for the control of an assistant personal robot 

      Martínez Lacasa, Daniel; Clotet Bellmunt, Eduard; Moreno Blanc, Javier; Tresánchez Ribes, Marcel; Palacín Roca, Jordi (Springer International Publishing Switzerland, 2016)
      This paper proposes a control system design for a mobile robot assistant based on a multi-agent architecture. The robotic platform used in this paper is a second generation Assistant Personal Robot (APR-02) with an own ...
    • A proposal of low-cost and low-power embedded wireless image sensor node for IoT applications 

      Tresánchez Ribes, Marcel; Pujol, Alain; Pallejà Cabrè, Tomàs; Martínez Lacasa, Daniel; Clotet Bellmunt, Eduard; Palacín Roca, Jordi (Elsevier, 2018)
      This paper proposes the design of a low-cost, low-power and small size image acquisition device to be used in Internet of Things (IoT) applications which collects, processes and sends image data through a 2.4GHz Wi-Fi ...
    • A queuing theory model for cloud computing 

      Vilaplana, Jordi; Solsona Tehàs, Francesc; Teixidó Torrelles, Ivan; Mateo, Jordi; Abella i Pons, Francesc; Rius, Josep (Springer Verlag, 2014-04)
      The ability to deliver guaranteed QoS (Quality of Service) is crucial for the commercial success of cloud platforms. This paper presents a model based on queuing theory to study computer service QoS in cloud computing. ...