Now showing items 13-24 of 66

    • Variational mechanics and stochastic methods applied to structural design 

      Andujar Moreno, Rabindranath (Universitat Politècnica de Catalunya, 2015-02-03)
      Doctoral thesis
      Open Access
      This thesis explores a very well understood area of physics: computational structural dynamics. The aim is to stretch its boundaries by merging it with another very well established discipline such as structural design and ...
    • Thermal convection in rotating spherical shells 

      Garcia Gonzalez, Ferran (Universitat Politècnica de Catalunya, 2012-12-01)
      Doctoral thesis
      Open Access
      The study of thermal convection in rotating spherical geometry is fundamental to explain many geophysical and astrophysical phenomena such as the generation of the magnetic fields, or the differential rotation observed in ...
    • Latest generation white dwarf cooling models : theory and applications 

      Renedo Rouco, Isabel (Universitat Politècnica de Catalunya, 2014-11-13)
      Doctoral thesis
      Open Access
      White dwarfs are the most common stellar evolutionary end-point. Moreover, they can be considered as reliable cosmic clocks to infer the age of a wide variety of stellar populations, including globular and open clusters. ...
    • Time-varying networks approach to social dynamics : from individual to collective behavior 

      Starnini, Michele (Universitat Politècnica de Catalunya, 2014-10-24)
      Doctoral thesis
      Open Access
      The data revolution experienced by social science has revealed complex patterns of interactions in human dynamics, such as the heterogeneity and burstiness of social contacts. The recently uncovered temporal dimension of ...
    • Short-range order in disordered phases using neutron diffraction 

      Rovira Esteva, Muriel (Universitat Politècnica de Catalunya, 2014-09-26)
      Doctoral thesis
      Open Access
      Neutron diffraction is a powerful technique that allows to probe the structure of disordered phases across a variety of length scales. However, due to the inherent complexity of these disordered hases, the analysis of the ...
    • Structural and electrical characterization of doped graphene and carbon nanotube networks 

      Iqbal, Muhammad Zahir (Universitat Politècnica de Catalunya, 2014-07-16)
      Doctoral thesis
      Open Access
      Covenantee:   Sejong Taehak
      Graphene, a two-dimensional sp2-hybridized network of carbon atoms has received a remarkable cornucopia of new physics and served as a unique model system, due particularly to its electronic properties, which could have ...
    • Transitional periods of the atmospheric boundary layer 

      Blay Carreras, Estel (Universitat Politècnica de Catalunya, 2014-07-21)
      Doctoral thesis
      Open Access
      The atmospheric boundary layer is the part of the troposphere influenced by the presence of the surface, and where most weather phenomena occur. During the day, with fair weather conditions, a convective boundary layer ...
    • Monte Carlo simulations of the population of single and binary white dwarfs of our galaxy 

      Camacho Díaz, Judit (Universitat Politècnica de Catalunya, 2014-06-19)
      Doctoral thesis
      Open Access
      Since white dwarfs are the final stage of the evolution of the vast majority of stars, they carry important information about the chemical evolution of our Galaxy, its star formation rate, and its structure and dynamics. ...
    • Non-linear fluid dynamics in oscillatory cylindrical cavities 

      Panadès i Guinart, Carles (Universitat Politècnica de Catalunya, 2013-06-28)
      Doctoral thesis
      Open Access
      Even though the transition to turbulence has been studied for over a century, its complete comprehension still remains unclear even for the simplest flows and continues to be a daunting challenge for the scientific community. ...
    • Neuronal oscillations: from single-unit activity to emergent dynamics and back 

      Sancristóbal Alonso, Belén de (Universitat Politècnica de Catalunya, 2013-07-22)
      Doctoral thesis
      Open Access
      L’objectiu principal d’aquesta tesi és avançar en la comprensió del processament d’informació en xarxes neuronals en presència d’oscil lacions subumbrals. La majoria de neurones propaguen la seva activitat elèctrica a ...
    • Convección térmica en un anillo cilíndrico en rotación 

      Alonso Maleta, María Aránzazu (Universitat Politècnica de Catalunya, 1999-04-30)
      Doctoral thesis
      Open Access
      En la tesis doctoral Convección térmica en un anillo cilíndrico en rotación se estudian diferentes aspectos de la dinámica lineal y no lineal de un fluido Boussinesqconfinado en un anillo cilíndrico, en rotación alrededor ...
    • Transient and stochastic dynamics in cellular processes 

      Rué Queralt, Pau (Universitat Politècnica de Catalunya, 2013-07-25)
      Doctoral thesis
      Open Access
      This Thesis studies different cellular and cell population processes driven by non-linear and stochastic dynamics. The problems addressed here gravitate around the concepts of transient dynamics and relaxation from a ...