Now showing items 21-40 of 725

    • 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 Mayoral, Jordi; Solsona Tehàs, Francesc; Teixidó Torrelles, Ivan; Mateo, Jordi; Abella i Pons, Francesc; Rius Torrentó, Josep Maria (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. ...
    • A Secure Elliptic Curve-Based RFID Protocol 

      Martínez Rodríguez, Santi; Valls Marsal, Magda; Roig Mateu, Concepció; Miret, Josep M. (Josep Maria); Giné, Francesc (Springer Verlag, 2009)
      Nowadays, the use of Radio Frequency Identification (RFID) systems in industry and stores has increased. Nevertheless, some of these systems present privacy problems that may discourage potential users. Hence, high ...
    • A Semantic wiki for quality management in software development projects 

      García González, Roberto; Gil Iranzo, Rosa María; Gimeno Illa, Juan Manuel; Granollers i Saltiveri, Toni; López, Juan Miguel; Oliva Solé, Marta; Pascual Almenara, Afra (Institution of Engineering and Technology, 2010)
      Quality management has become a strategic issue for organisations and is very valuable to produce quality software. However, quality management systems (QMS) are not easy to implement and maintain. The authors' experience ...
    • A simple model to predict the thermal performance of a ventilated facade with phase change materials 

      Gracia Cuesta, Alvaro de; Castell, Albert; Fernàndez Camon, César; Cabeza, Luisa F. (Elsevier, 2015)
      Appropriate design and control strategies are crucial for the implementation of certain complex active systems in the building sector. Suitable and user-friendly numerical tools have to be available to architects and ...
    • A Space and Time Sharing Scheduling Approach for PVM Non-dedicated Clusters 

      Hanzich, Mauricio; Giné, Francesc; Hernández Budé, Porfidio; Solsona Tehàs, Francesc; Luque, Emilio (Springer Verlag, 2005)
      Wasted resources are a common reality in open laboratories in any University today [2]. Our aim is to take advantage of those resources to do parallel computation without disturbing the local tasks excessively. In order ...
    • A Study on How Users Perceive Distributed Interactions on Web Applications 

      Albertos Marco, Félix; Gallud, Jose A.; Penichet, Victor M. R. (Institute of Electrical and Electronics Engineers (IEEE), 2018)
      Currently, users are able to interact with several devices, from smart watches to desktop computers, to perform different tasks. Such diversity of heterogeneous devices form a multi-device and multi-display ecosystem. ...
    • A Time-Domain Method for the Analysis of Thermal Impedance Response Preserving the Convolution Form 

      Carmona, Manuel; Marco, Santiago; Palacín Roca, Jordi; Samitier, Josep (Institute of Electrical and Electronics Engineers, 1999)
      The study of the thermal behavior of complex packages as multichip modules (MCM’s) is usually carried out by measuring the so-called thermal impedance response, that is: the transient temperature after a power step. ...
    • A user-friendly web portal for T-Coffee on supercomputers 

      Rius Torrentó, Josep Maria; Cores Prado, Fernando; Solsona Tehàs, Francesc; Hemert, Jano van; Koetsier, Jos; Notredame, Cedric (BioMed Central, 2011)
      Background: Parallel T-Coffee (PTC) was the first parallel implementation of the T-Coffee multiple sequence alignment tool. It is based on MPI and RMA mechanisms. Its purpose is to reduce the execution time of the large-scale ...
    • A web ontologies framework for digital rights management 

      García González, Roberto; Gil Iranzo, Rosa María; Delgado Mercè, Jaime (Springer, 2007)
      In order to improve the management of copyright in the Internet, known as Digital Rights Management, there is the need for a shared language for copyright representation. Current approaches are based on purely syntactic ...
    • La accesibilidad de los gráficos estadísticos para personas con baja visión y visión cromática deficiente: revisión del estado del arte y perspectivas 

      Alcaraz Martínez, Rubén; Ribera Turró, Mireia; Granollers i Saltiveri, Toni (Asociación Interacción Persona-Ordenador (AIPO), 2020)
      Los gráficos estadísticos juegan un papel primordial en diferentes ámbitos de nuestra vida como la información, la educación, la comunicación o la investigación, entre otros. No obstante, los autores y editores de contenido ...
    • Acoustic insulation capacity of Vertical Greenery Systems for buildings 

      Pérez Luque, Gabriel; Coma Arpón, Julià; Barreneche Güerisoli, Camila; Gracia Cuesta, Alvaro de; Urrestarazu, Miguel; Burés, Silvia; Cabeza, Luisa F. (Elsevier, 2016)
      Vertical Greenery Systems (VGS) are promising contemporary Green Infrastructure which contribute to the provision of several ecosystem services both at building and urban scales. Among others, the building acoustic insulation ...
    • Active bogies and chassis levelling for a vehicle operating in rough terrain 

      Pijuan Cases, Jordi; Comellas Andrés, Martí; Nogués Aymamí, Miquel; Roca Enrich, Joan; Potau, Xavi (Elsevier, 2012)
      Four axle vehicles with bogies can adapt the position of the wheels to follow irregularities in the terrain, having an obstacle surpassing ability far greater than conventional 2-axle vehicles. Still, the ability to ...
    • Active phase change material package for thermal protection of ice cream containers 

      Oró Prim, Eduard; Gracia Cuesta, Alvaro de; Cabeza, Luisa F. (Elsevier, 2013)
      Temperature sensitive products transportation and storage are global issues because of the new lifestyle of the people. Here, the enhancement of the ice cream storage conditions when it is placed outside the freezer is ...
    • Adaptation of rammed earth to modern construction systems: Comparative study of thermal behavior under summer conditions 

      Serrano, Susana; Gracia Cuesta, Alvaro de; Cabeza, Luisa F. (Elsevier, 2016)
      Buildings should be understood as a process that consumes energy in all their phases (design, construction, use and end-of-life) and, more specifically, the building envelope is clearly involved in all of them. For this ...
    • Adding similarity-based reasoning capabilities to a Horn fragment of possibilistic logic with fuzzy constants 

      Alsinet, Teresa; Godo i Lacasa, Lluís (Elsevier, 2004)
      PLFC is a first-order possibilistic logic dealing with fuzzy constants and fuzzily restricted quantifiers. The refutation proof method in PLFC is mainly based on a generalized resolution rule which allows an implicit graded ...
    • Adding truth-constants to logics of continuous t-norms: Axiomatization and completeness results 

      Noguera, Carles; Esteva, Francesc; Gispert, Joan; Godó, Lluís (Elsevier, 2007)
      In this paper we study generic expansions of logics of continuous t-norms with truth-constants, taking advantage of previous results for Łukasiewicz logic and more recent results for Gödel and Product logics. Indeed, we ...
    • Adjusting the Lengths of Time Slices when Scheduling PVM Jobs with High Memory Requirements 

      Giné, Francesc; Solsona Tehàs, Francesc; Hernandez, Porfidio; Luque, Emilio (Springer Verlag, 2002)
      Our research is focussed on keeping both local and parallel jobs together in a non-dedicated cluster and scheduling them efficiently. In such systems, the overflow of the physical memory into the virtual memory usually ...