Ara es mostren els items 14-19 de 19

  • Pluviometric regionalization of Catalunya: a compositional data methodology 

    Gibergans Baguena, José; Ortego Martínez, María Isabel; Tolosana Delgado, Raimon (Centro Internacional de Métodos Numéricos en Ingeniería (CIMNE), 2011)
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    The aim of this paper is to introduce a methodology for de¯ning groups from regionalized com- positional data, through a hierarchical clustering algorithm aware of both the spatial dependence and the compositional character ...
  • The compositional meaning of a detection limit 

    van den Boogaart, Karl Gerard; Tolosana Delgado, Raimon; Bren, Matevz (Centre Internacional de Mètodes Numèrics en Enginyeria (CIMNE), 2011)
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    Conclusions The chemical interpretation of the detection limit and its stochastic model counterpart has thus different consequences for the statistical analysis than we would expect from the word by word interpretation of ...
  • Trend analysis for daily rainfall series of Barcelona 

    Ortego Martínez, María Isabel; Gibergans Baguena, José; Tolosana Delgado, Raimon; Egozcue Rubí, Juan José; Llasat Botija, Maria Carmen (2009-09-11)
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    Frequency analysis of hydrological series is a key point to acquire an in-depth understanding of the behaviour of hydrologic events. The occurrence of extreme hydrologic events in an area may imply great social and ...
  • Unmixing compositional data with Bayesian techniques 

    Tolosana Delgado, Raimon (Centre Internacional de Mètodes Numèrics en Enginyeria (CIMNE), 2011)
    Text en actes de congrés
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    A general problem in compositional data analysis is the unmixing of a composition into a series of pure endmembers. In its most complex version, one does neither know the composition of these endmembers, nor their relative ...
  • Uses and misuses of compositional data in sedimentology 

    Tolosana Delgado, Raimon (2012-12)
    Article
    Accés restringit per política de l'editorial
    This paper serves two goals. The first part shows how mass evolution processes of different nature become undistinguishable once we take a size-limited, noisy sample of its compositional fingerprint: processes of exponential ...
  • Wave height data assimilation using non-stationary kriging 

    Tolosana Delgado, Raimon; Egozcue Rubí, Juan José; Sánchez-Arcilla Conejo, Agustín; Gómez Aguar, Jesús Javier (2011-03)
    Article
    Accés restringit per política de l'editorial
    Data assimilation into numerical models should be both computationally fast and physically meaningful, in order to be applicable in online environmental surveillance. We present a way to improve assimilation for computationally ...