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Browsing by Author "Garcia Domingo, Josep Lluís"

Browsing by Author "Garcia Domingo, Josep Lluís"

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  • A decreasing rearrangement for functions on homogeneous trees
    Garcia Domingo, Josep Lluís; Soria, Javier (Elsevier, 2005)
    We introduce a new decreasing rearrangement for functions defined on a homogeneous tree, which enjoys very intuitive and natural properties. The idea is to iterate, with respect to a particular ordering, the usual one ...
  • Degree correlations in growing networks with deletion of nodes
    Garcia Domingo, Josep Lluís; Juher, David; Saldaña, Joan (Elsevier, 2008)
    In this paper we study the degree distribution and the two-node degree correlations in growing networks generated via a general linear preferential attachment of new nodes together with a uniformly random deletion of ...
  • Effects of heterogeneous interaction strengths on food web complexity
    Garcia Domingo, Josep Lluís; Saldaña, Joan (Wiley-Blackwell, 2008)
    Using a bioenergetic model we show that the pattern of foraging preferences greatly determines the complexity of the resulting food webs. By complexity we refer to the degree of richness of food-web architecture, measured ...
  • Embeddings for monotone functions and Bp weights, between discrete and continuous
    Garcia Domingo, Josep Lluís (Mathematica Scandinavica, 2005)
    We characterize the embedding for general weighted Lebesgue spaces of monotone functions by using the analog embedding for discrete monotone sequences indexed over the integers. We then use these results to obtain the ...
  • Evaluating the impact of asynchronous telemedicine in the Catalan central region
    Vidal Alaball, Josep (23-11-2018)
    La utilització del servei de teledermatologia en lloc del servei de dermatologia presencial podria estalviar fins a 51.164 € l'any a la comarca del Bages. Això equival a un estalvi d'11,4 € per pacient atès. La majoria ...
  • Extinction threshold for spatial forest dynamics with height structure
    Garcia Domingo, Josep Lluís; Saldaña, Joan (Elsevier, 2011)
    We present a pair-approximation model for spatial forest dynamics defined on a regular lattice. The model assumes three possible states for a lattice site: empty (gap site), occupied by an immature tree, and occupied by a ...
  • Food-web complexity emerging from ecological dynamics on adaptive networks
    Garcia Domingo, Josep Lluís; Saldaña, Joan (Elsevier, 2007)
    Food webs are complex networks describing trophic interactions in ecological communities. Since Robert May’s seminal work on random structured food webs, the complexity–stability debate is a central issue in ecology: does ...
  • Hardy’s inequalities for monotone functions on partly ordered measure spaces
    Arcozzi, Nicola; Barza, Sorina; Garcia Domingo, Josep Lluís; Soria, Javier (Cambridge University Press, 2006)
    We characterize the weighted Hardy inequalities for monotone functions in Rn +. In dimension n = 1, this recovers the standard theory of Bp weights. For n > 1, the result was previously only known for the case p = 1. ...
  • Lorentz spaces for decreasing rearrangements of functions on trees
    Garcia Domingo, Josep Lluís; Soria, Javier (University of Zagreb, 2004)
    We characterize the existence of a norm in the Lorentz spaces defined on trees, for non-linear decreasing rearrangements, as well as other functional properties (quasinormability, relationship with rearrangement invariant ...
  • Open Innovation in SMEs
    Hitchen, Emma (14-09-2017)
    Aquesta tesi se centra en l'ús de la innovació oberta a les PIME. La innovació oberta explica com petites empreses amb menys recursos poden competir amb èxit contra empreses més grans. Aquest treball comença amb una revisió ...
  • A pair-approximation model for spatial patterns in tree populations with asymmetrical resource competition
    Garcia Domingo, Josep Lluís; Saldaña, Joan (Taylor & Francis, 25-10-2013)
    A pair-approximation model for the spatial dynamics of a height-structured tree population is defined on a regular lattice where each site can be in one of three states: empty (gap site), 10 occupied by an immature ...
  • Weighted inequalities and the shape of approach regions
    Garcia Domingo, Josep Lluís; Soria, Javier (Pan'stwowe Wydawnictwo Naukowe, 1999)
    We characterize geometric properties of a family of approach regions by means of analytic properties of the class of weights related to the boundedness of the maximal operator associated with this family.

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