Ara es mostren els items 1-12 de 22

    • Front form and point form formulation of predictive relativistic mechanics. Noninteraction theorems 

      Jaen Herbera, Javier; Molina, A; Iranzo Fernández, Vicente (1986-02)
      Article
      Accés obert
      The front form and the point form of dynamics are studied in the framework of predictive relativistic mechanics. The noninteraction theorem is proved when a Poincare-invariant Hamiltonian formulation with canonical position ...
    • Relationship between climate variability indices and airborne pollination in Catalonia (NE Iberian Peninsula) 

      Alarcón Jordán, Marta; Belmonte, Jordina; Majeed, Husam Tareq; Periago Oliver, M. Cristina; Izquierdo Miguel, Rebeca (2014)
      Text en actes de congrés
      Accés obert
      Here we explore the effect of climatic variability on the airborne pollen series recorded in Catalonia (NE Iberian Peninsula) considered of high interest due to abundance, landscape importance and/or allergenic significance. ...
    • Homothetic motions and Newtonian cosmology 

      Jaen Herbera, Javier; Molina Compte, Alfred (2014-05-07)
      Article
      Accés restringit per política de l'editorial
      We construct a homothetic covariant Newtonian gravitation theory which unifies inertial homothetic forces and gravitational fields. This is achieved through an equivalence principle based on a local homothetic frame of ...
    • A conceptual discussion on electromagnetic units - Extending mechanical units towards a global system of units 

      Jaen Herbera, Javier; Bohigas Janoher, Xavier; Pejuan Alcobé, Arcadi (2014-05)
      Article
      Accés restringit per política de l'editorial
      A comparative review of the different systems of units that are most usual in electromagnetism leads to the proposal of a new system of units. In this system, the gravitational constant acquires the role of an interaction ...
    • La cara oculta del gasto militar. El presupuesto militar de 2014 

      Ortega, Pere; Doe, John; Bohigas Janoher, Xavier (2013-11)
      Report de recerca
      Accés obert
      Análisis del presupuesto militar del Estado español, a partir de los Presupuestos Generales de l Estado 2014
    • Una ojeada al terrorismo nuclear 

      Bohigas Janoher, Xavier (2013)
      Article
      Accés obert
    • Rigid motions and generalized Newtonian gravitation 

      Jaen Herbera, Javier; Molina Compte, Alfred (2013-08-01)
      Article
      Accés restringit per política de l'editorial
      In an effort to contribute to a better understanding of General Relativity, here we lay the foundations of generalized Newtonian gravity, which unifies inertial forces and gravitational fields. We also formulate a kind ...
    • Comparative study of three audio processors as environments for laboratory activities on wave physics and acoustics 

      Pejuan Alcobé, Arcadi; Bohigas Janoher, Xavier; Jaen Herbera, Javier; Periago Oliver, M. Cristina (2013-08)
      Article
      Accés restringit per política de l'editorial
      Audio processors allow to implement laboratory activities specially on acoustics. We have evaluated three audio processors (Audacity, WaveLab, and Adobe Audition). Although an overall grade was also calculated as a ...
    • Misconceptions about sound among engineering students 

      Pejuan Alcobé, Arcadi; Bohigas Janoher, Xavier; Jaen Herbera, Javier; Periago Oliver, M. Cristina (2012)
      Article
      Accés obert
      Our first objective was to detect misconceptions about the microscopic nature of sound among senior university students enrolled in different engineering programmes (from chemistry to telecommunications). We sought to ...
    • Refredament magnètic: ordre i desordre d'imants atòmics 

      Bohigas Janoher, Xavier (2011)
      Article
      Accés obert
      S’ha comprovat que la refrigeració magnètica que utilitza un sistema magnètic és energèticament eficient i competitiva amb la tecnologia refrigerant basada en la compressió de gasos en el rang de temperatures proper a ...
    • Entorn virtual d’aprenentatge autònom 

      Periago Oliver, M. Cristina; Jaen Herbera, Javier; Bohigas Janoher, Xavier; Pejuan Alcobé, Arcadi (2010)
      Comunicació de congrés
      Accés obert
      En aquesta ponència presentem un Entorn Virtual d’Aprenentatge (EVA) dissenyat per fomentar l’aprenentatge autònom [1,2,3]. Es tracta d’una activitat dirigida en la qual se suggereixen les accions que l’estudiant ha de ...
    • Modelos mentales alternativos de los alumnos de segundo curso de Ingeniería sobre la ley de Coulomb y el campo eléctrico 

      Bohigas Janoher, Xavier; Periago Oliver, M. Cristina (2010-05)
      Article
      Accés obert
      El presente estudio tiene como objetivo identificar los modelos mentales que aplican los estudiantes al iniciar el segundo curso de ingeniería cuando utilizan la Ley de Coulomb y el concepto de campo eléctrico para interpretar ...