Ara mostrant els elements 241-260 de 780

    • Generació de funcions de similitud mitjançant la Programació Genetica pel Raonament Basat en Casos 

      Golobardes, Elisabet; Nieto, Mireya; Camps Dausà, Joan; Calzada, Gemma; Martí, Joan; Vernet Bellet, David; Salamó Llorente, Maria (2001-10)
      El raonament basat en casos recupera casos utilit­zant una funció de similitud. La funció de simi­litud permet extraure els casos més similars de la memoria de casos al nou cas que volem resoldre. Per ...
    • Mobile robot guidance using cellular neural networks and fuzzy logic 

      Balsi, Marco; Maraschini, Alessandro; Apicella, Giada; Luengo Álvarez, Sonia; Vilasís Cardona, Xavier (2001-10)
      We show how a Cellular Neural Networks based im­age processing system together with a Tuzzy Logic controller are capable of providing the necessary signal processing to guide an autonomous mobile robot ...
    • Observations of B0 s → ψ(2S)η and B0 (s) → ψ(2S)π+π− decays 

      Abellan Beteta, Carlos; Calvo Gómez, Míriam; Camboni, Alessandro; Vilasís Cardona, Xavier; LHCb Collaboration - CERN (Nuclear Physics B, 2013, Vol. 871, No. 3, 2013-06)
      First observations of the B0s→ψ(2S)η,B0→ψ(2S)π+π− and B0s→ψ(2S)π+π− decays are made using a dataset corresponding to an integrated luminosity of 1.0 fb−1 collected by the LHCb experiment in proton–proton ...
    • Measurement of relative branching fractions of B decays to ψ(2S) and J/ψ mesons 

      Abellan Beteta, Carlos; Calvo Gómez, Míriam; Camboni, Alessandro; Domingo Bonal, Francesc; Roselló Canal, Mar; Vilasís Cardona, Xavier; LHCb Collaboration - CERN (The European Physical Journal C, 2012, Vol. 72, No. 2118, 2012-08)
      The relative rates of B-meson decays into J/ψ and ψ(2S) mesons are measured for the three decay modes in pp collisions recorded with the LHCb detector. The ratios of branching fractions (B) are measured ...
    • Measurement of the forward energy flow in pp collisions at √s = 7 TeV 

      Abellan Beteta, Carlos; Calvo Gómez, Míriam; Camboni, Alessandro; Domingo Bonal, Francesc; Vilasís Cardona, Xavier; LHCb Collaboration - CERN (The European Physical Journal C, 2013, Vol. 73, No. 2421, 2013-05)
      The energy flow created in pp collisions at √s = 7 TeV is studied within the pseudorapidity range 1.9 <η< 4.9 with data collected by the LHCb experiment. The measurements are performed for inclusive ...
    • Determination of the quark coupling strength |Vub| using baryonic decays 

      Badalov, Alexey; Calvo Gómez, Míriam; Vilasís Cardona, Xavier; LHCb Collaboration - CERN (Nature Physics, 2015, Vol. 11, 2015-07)
      In the Standard Model of particle physics, the strength of the couplings of the b quark to the u and c quarks, |Vub| and |Vcb|, are governed by the coupling of the quarks to the Higgs boson. Using data ...
    • Measurement of the CP-violating phase φsin B0s→J/ψπ+π−decays 

      Badalov, Alexey; Calvo Gómez, Míriam; Camboni, Alessandro; Vilasís Cardona, Xavier; LHCb Collaboration - CERN (Physics Letters B, 2014, Vol. 736, 2014-09)
      The mixing-induced CP-violating phase in and decays is measured using the final state in data, taken from 3 fb−1 of integrated luminosity, collected with the LHCb detector in 7 and 8 TeV centre-of-mass ...
    • Search for the doubly charmed baryon Ξ+ cc 

      Badalov, Alexey; Calvo Gómez, Míriam; Camboni, Alessandro; Vilasís Cardona, Xavier; LHCb Collaboration - CERN (Journal of High Energy Physics, 2013, No. 90, 2013-12)
      A search for the doubly charmed baryon Ξ+ cc in the decay mode Ξ+ cc→ Λ + c K−π + is performed with a data sample, corresponding to an integrated luminosity of 0.65 fb−1 , of pp collisions recorded at ...
    • New methods and technologies for enhancing usability and accessibility of educational data 

      Fonseca Escudero, David; García-Peñalvo, Francisco José; Camba, Jorge D. (Universal Access in the Information Society, 2020, 2020-10)
    • Small is big in ICT: The impact of R&D on productivity 

      Koutroumpis, Pantelis; Leiponen, Aija; Thomas, Llewellyn D.W. (Telecommunications Policy, 2020, 2019-07)
      We examine the contribution of R&D to firm productivity in a large panel of European firms and study its variation with the age, size, and sub-sector of firms. We find that R&D capital in ICT firms has ...
    • Evidence for the decay X(3872) →ψ(2S)γ 

      Badalov, Alexey; Calvo Gómez, Míriam; Camboni, Alessandro; Vilasís Cardona, Xavier; LHCb Collaboration - CERN (Nuclear Physics B, 2014, Vol. 886, 2014-09)
      Evidence for the decay mode X(3872) →ψ(2S)γ in B+→X(3872)K+decays is found with a sig-nificance of 4.4 standard deviations. The analysis is based on a data sample of proton–proton collisions, corresponding ...
    • Evolution of Decision Trees 

      Llorà Fàbrega, Xavier; Garrell i Guiu, Josep Maria (2001-10)
      This paper addresses the issue of the induction of orthogonal, oblique and mul­tivariate decision trees. Algorithms pro­posed by other researchers use heuristic, usually based on the information gain ...
    • Optimizacion de la accesibilidad web a partir de la experiencia de uso con usuarios discapacitados 

      Fonseca Escudero, David; Villegas Portero, Eva; Navarro Delgado, Isidro; Pifarré, Marc; Sorribas, Xavier (2009-06)
      La accesibilidad web, incluso la accesibilidad a espacios reales son conceptos ampliamente definidos en la mayoría de casos por expertos en el tema y habitualmente implementados por diseñadores o ...
    • Measurement of the B0–B0 oscillation frequency md with the decays B0→D−π+ and B0→J/ψK∗0 

      Abellan Beteta, Carlos; Calvo Gómez, Míriam; Domingo Bonal, Francesc; Vilasís Cardona, Xavier; LHCb Collaboration - CERN (Physical Letters B, Vol. 719, 2013-01)
      The B0–B0oscillation frequency mdis measured by the LHCb experiment using a dataset correspondingto an integrated luminosity of 1.0fb−1of proton–proton collisions at√s=7TeV,and is found to be ...
    • Measurement of the effective B0s→J/ψK0S lifetime 

      Abellan Beteta, Carlos; Calvo Gómez, Míriam; Camboni, Alessandro; Vilasís Cardona, Xavier; LHCb Collaboration - CERN (Nuclear Physics B, 2013, Vol. 873, No. 2, 2013-08)
      This paper reports the first measurement of the effective B0s→J/ψK0S lifetime and an updated mea-surement of its time-integrated branching fraction. Both measurements are performed with a data sample, ...
    • Measurement of the ¯¯¯ B 0 s Effective Lifetime in the J / ψ f 0 ( 980 ) Final State 

      Calvo Gómez, Míriam; Camboni, Alessandro; Vilasís Cardona, Xavier; LHCb Collaboration - CERN (Physical Review Letters, 2012, Vol. 109, No. 15, 2012-10)
      The effective lifetime of the ¯¯¯ B 0 s meson in the decay mode ¯¯¯ B 0 s → J / ψ f 0 ( 980 ) is measured using 1.0     fb − 1 of data collected in p p collisions at √ s = 7     TeV with the ...
    • Search for Rare B 0 ( s ) → μ + μ − μ + μ − Decays 

      Calvo Gómez, Míriam; Camboni, Alessandro; Vilasís Cardona, Xavier; LHCb Collaboration - CERN (Physical Review Letters, 2013, Vol. 110, No. 21, 2013-05)
      A search for the decays B 0 s → μ + μ − μ + μ − and B 0 → μ + μ − μ + μ − is performed using data, corresponding to an integrated luminosity of 1.0     fb − 1 , collected with the LHCb detector in ...
    • O cambiamos o los perdemos 

      Vernet Bellet, David; Canaleta Llampallas, Xavier (2019-07)
      Cada vez más, los alumnos que entran en la universidad demuestran que la manera que tienen de aprender y estudiar no es compatible con la mayoría de los métodos de enseñanza que existen habitualmente ...
    • Utilizando analítica del aprendizaje en una clase invertida: Experiencia de uso en la asignatura de Sistemas Digitales y Microprocesadores 

      Navarro Martín, Joan; Amo Filvà, Daniel; Vidaña Vila, Ester; Martínez Suquia, Carmen (2018-07)
      El modelo de clase invertida (o flipped classroom) permite al docente implementar actividades de aprendizaje activo en las sesiones presenciales dejando que el alumno trabaje los contenidos más teóricos ...
    • Systematic Review on Which Analytics and Learning Methodologies Are Applied in Primary and Secondary Education in the Learning of Robotics Sensors 

      Amo Filvà, Daniel; Fox, Paul; Fonseca Escudero, David; Poyatos, César (Sensors, 2020, Vol. 21, No. 1, 2020-12)
      Robotics technology has become increasingly common both for businesses and for private citizens. Primary and secondary schools, as a mirror of societal evolution, have increasingly integrated science, ...