Now showing items 1983-2002 of 78617

  • A methodology to quantify the differences between alternative methods of heart rate variability measurement 

    García González, Miguel Ángel; Fernández Chimeno, Mireya; Guede Fernández, Federico; Ferrer Mileo, Víctor; Argelagós Palou, Ariadna; Álvarez Gómez, Laura; Parrado Romero, Eva; Moreno Sánchez, Jordi; Capdevila, Lluis; Ramos Castro, Juan José (Institute of Physics (IOP), 2015-12-14)
    Article
    Open Access
    This work proposes a systematic procedure to report the differences between heart rate variability time series obtained from alternative measurements reporting the spread and mean of the differences as well as the agreement ...
  • A metrics review for performance evaluation on assisted wheelchair navigation 

    Urdiales García, Cristina; Peula, José Ma.; Cortés García, Claudio Ulises; Barrué Subirana, Cristian; Fernández Espejo, Blanca; Annicchiarico, Roberta; Sandoval, Francisco; Caltagirone, Carlo (Springer Verlag, 2009-06-10)
    Conference report
    Restricted access - publisher's policy
    In nowadays aging society, many people require assistance for non-pedestrian mobility. In some cases, assistive devices require a certain degree of autonomy when the persons’ disabilities difficult manual control. In this ...
  • A mi "ens agrada" Chicago 

    Illescas de la Morena, Alberto (Palimpsesto, 2011-03)
    Article
    Open Access
  • A micro-macro evaluation of the vertebral bony endplate permeability based on computational fluid dynamics 

    Malandrino, Andrea; Hellmich, Christian; Redl, Heinz; Noailly, Jérôme; Lacroix, Damien Jerome (2011)
    Conference report
    Open Access
    The intrinsic permeability is an important parameter that describes the resistance of a porous structure to fluid flo w. It has a key role in poroelastic finite element models of spinal segments, especially at ...
  • A microbiology application of the skew-Laplace distribution 

    Julià, Olga; Vives Rego, Josep (Institut d'Estadística de Catalunya, 2008)
    Article
    Open Access
    Flow cytometry scatter are ofen used in microbiology, and their measures are related to bacteria size and granularity. We present an application of the skew-Laplace distribution to flow cytometry data. The goodness of fit ...
  • A microcomputer-based control system for electric vehicles 

    Bertran Albertí, Eduardo; Martinez, L; Miguel López, José María; Munilla, I (1982-07)
    Article
    Open Access
    This paper describes a microcomputer-based algorithm used to control a dc separately excited motor for electric vehicle drive. The control programme consists essentially of two secondary programmes which perform respectively ...
  • A Micromegas detector for neutron beam imaging at the n TOF facility at CERN 

    Belloni, Fabio; Andriamonje, S.; Berthoumieux, Eric; Calviani, Marco; Colonna, Nicola; Gunsing, Frank; Tsinganis, A.; Calviño Tavares, Francisco; Cortés Rossell, Guillem Pere; Gómez Hornillos, María Belén; Riego Pérez, Albert (2014-05-01)
    Article
    Restricted access - publisher's policy
    Micromegas (Micro-MEsh Gaseous Structure) detectors are gas detectors consisting of a stack of one ionization and one proportional chamber. A micromesh separates the two communicating regions, where two different electric ...
  • A micromorphic model for steel fiber reinforced concrete 

    Oliver Olivella, Xavier; Mora Méndez, Diego Fernando; Huespe, Alfredo Edmundo; Weyler Pérez, Rafael (2012-10-15)
    Article
    Open Access
    A new formulation to model the mechanical behavior of high performance fiber reinforced cement composites with arbitrarily oriented short fibers is presented. The formulation can be considered as a two scale approach, ...
  • A microprocessor-based speed controller for DC motors 

    Bertran Albertí, Eduardo; Herranz, J; Martinez, L; Miguel, J; Munilla, I. (1983-07)
    Article
    Open Access
    The introduction of microprocessors into electric vehicles has opened many interesting possibilities for improving the operation and maintenance of such automotive systems. On the other hand, microcomputer-based motor ...
  • A microstrip array operating in a fracton mode [fractal geometry] 

    Anguera Pros, Jaume; Montesinos, Gemma; Puente Baliarda, Carles; Borja, C.; Soler, Jordi (Institute of Electrical and Electronics Engineers (IEEE), 2003)
    Conference report
    Restricted access - publisher's policy
    A high-directivity microstrip array using multilevel elements based on a fractal geometry is theoretically compared with one using a circular patches. Within the same electrical area, the same directivity can be obtained. ...
  • A microstrip low cost, high performance, intruder radar detector 

    de los Reyes, Elías; Elias Fusté, Antonio; Ferrando, Miguel; Corbella Sanahuja, Ignasi (Institute of Electrical and Electronics Engineers (IEEE), 1986)
    Conference report
    Open Access
    Doppler Radars operatinq as conventional intruder detectors at X band have been used in several security applications. However, almost all of them utilize heavy and bulky microwave subsystems in wavequide technoloqy. This ...
  • A microstructural model on the link between change in pore size distribution and wetting induced deformation in a compacted silt 

    Casini, Francesca; Vaunat, Jean; Romero Morales, Enrique Edgar (American Society of Civil Engineers (ASCE), 2013)
    Conference report
    Restricted access - publisher's policy
    The water retention curve expressed in terms of water content or degree of saturation and suction is hysteretic, stress path dependent (on void ratio), and depends on pore network. To properly describe its evolving nature, ...
  • A middle-level ontology for context modelling 

    Cabrera Béjar, Óscar Jair; Franch Gutiérrez, Javier; Marco Gómez, Jordi (Springer, 2015)
    Conference report
    Open Access
    Context modelling is one of the stages conducted during the context life cycle. It has the aim of giving meaning and structure to the collected context’s raw data. Although there are different context models proposed in ...
  • A Middleware architecture for Unmanned Aircraft Avionics 

    López, Juan; Royo Chic, Pablo; Pastor Llorens, Enric; Barrado Muxí, Cristina; Santamaria Barnadas, Eduard (Uiversity of Irvine, 2007-11)
    Conference report
    Open Access
    An Unmanned Aerial Vehicle is a non-piloted airplane designed to operate in dangerous and repetitive situations. With the advent of UAV's civil applications, UAVs are emerging as a valid option in commercial scenarios. ...
  • A middleware for building contract-aware agent-based services 

    Confalonieri, Roberto; Álvarez Napagao, Sergio; Panagiotidi, Sofia; Vázquez Salceda, Javier; Willmott, Steven Nicolás (Springer Verlag, 2008)
    Conference report
    Restricted access - publisher's policy
    This paper presents a middleware to help designers in the implementation of contract-aware agent-based services. The middleware provides several components, including a contract manager, a communication manager and a ...
  • A Middleware framework for self-adaptive large scale distributed services 

    Chacin Martínez, Pablo Jesus (Universitat Politècnica de Catalunya, 2011-07-21)
    Doctoral thesis
    Open Access
  • A million-channel CO-PrOx microreactor on a fingertip for fuel cell application 

    Llorca Piqué, Jordi; Rosell, O.; Divins, N.J.; López, E.; Roig Costa, Maria; Todorov Trifonov, Trifon; Rodríguez Martínez, Ángel; González de Rivera, F.; Rodríguez, L.I.; Seco, M. (2010)
    Article
    Restricted access - publisher's policy
    A silicon micromonolith containing ca.40000 regular channels of 3.3 μm in diameter per square millimeter has been successfully functionalized with anAu/TiO2 catalyst for CO preferential oxidation(CO-PrOx) in the presence ...
  • A MILP Model for the Long Term Academic Staff Size and Composition Planning in Public Universities 

    Torre Martínez, María del Rocío de la; Lusa García, Amaia; Mateo Doll, Manuel (2015-10)
    Article
    Restricted access - publisher's policy
    This paper proposes a model for dealing with the long term staff composition planning in public universities. University academic staff is organized in units (or departments) according to their field of expertise. The staff ...
  • A MILP model for the teacher assignment problem considering teachers’ preferences 

    Domenech Léga, Bruno; Lusa García, Amaia (Elsevier, 2016)
    Article
    Restricted access - publisher's policy
    The Teacher Assignment Problem is part of the University Timetabling Problem and involves assigning teachers to courses, taking their preferences into consideration. This is a complex problem, usually solved by means of ...
  • A MILP model to design hybrid wind-photovoltaic isolated rural electrification projects in developing countries 

    Ferrer Martí, Laia; Domenech Léga, Bruno; García Villoria, Alberto; Pastor Moreno, Rafael (Elsevier, 2013-04-16)
    Article
    Restricted access - publisher's policy
    Electrification systems based on the use of renewable energy sources are a suitable option for providing electricity to isolated communities autonomously. Wind and hybrid wind–photovoltaic (PV) systems are increasingly ...