Sökning: "box dimension"

Visar resultat 1 - 5 av 14 avhandlingar innehållade orden box dimension.

  1. 1. Topics in multifractal measures, nonparametrics and biostatistics

    Författare :Attila Frigyesi; Anestesiologi och intensivvård; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; confidence interval; mixed effects; Statistics; operations research; programming; actuarial mathematics; Statistik; operationsanalys; programmering; aktuariematematik; operational model of pharmacological agonism; concentration-response curves; dose-response curves; ventilation perfusion scintigraphy; V Q-scan; pulmonary embolism; automated method; box counting; correlation dimension; Hentschel-Procaccia dimension; Rényi dimension; generalized dimensions; fractal dimension estimation; dimension spectrum; multifractal measures; kernel density estimates; absolute continuity; singular distribution functions;

    Sammanfattning : This thesis consists of four papers. The first two papers, which comprise the main part of the thesis, deal with an unexpected connection between kernel density estimators and dimension spectra for multifractal measures. LÄS MER

  3. 2. Dimensions and projections

    Författare :Anders Nilsson; Peter Wingren; Fredrik Georgsson; Umeå universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Fractals; Hausdorff dimension; box dimension; packing dimension; projections; MATHEMATICS; MATEMATIK;

    Sammanfattning : This thesis concerns dimensions and projections of sets that could be described as fractals. The background is applied problems regarding analysis of human tissue. One way to characterize such complicated structures is to estimate the dimension. LÄS MER

  4. 3. Opening the black box of material criticality : heterogeneity and interrelations of companies within and across industrial sectors

    Författare :Yulia Lapko; Cali Nuur; Paolo Trucco; Aristides Matopoulos; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Critical materials; Identification; Mitigation; Company; Supply chain; Inter-sectoral competition; Buyer-supplier power relations; Industriell ekonomi och organisation; Industrial Economics and Management;

    Sammanfattning : The concept of ‘material criticality’ has been introduced to examine availability and accessibility of natural resources that underlie industrial competitiveness and deployment of strategic technologies, such as electric mobility or wind turbines. The academic and policy discourse conceptualised material criticality rather as a black box, assuming industrial sectors to be monolithic, homogeneous and independent entities, neglecting complexity of the company dimension. LÄS MER

  5. 4. Box paradox : how key account management contributes to Business model innovation

    Författare :Ebba Laurin; Handelshögskolan i Stockholm; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES;

    Sammanfattning : Key Account Management is the way a firm handles its largest and most important customers. Significant resources are dedicated to accomplish both short-term sales objectives and strategic long-term goals. KAM is increasingly strategic, not least because the sales and selling activities are becoming digitalized and automatized. LÄS MER

  7. 5. Structural Reformulations in System Identification

    Författare :Christian Lyzell; Martin Enqvist; Lennart Ljung; Alessandro Chiuso; Linköpings universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; System identification; Dimension reduction; Subspace identification; Difference algebra;

    Sammanfattning : In system identification, the choice of model structure is important and it is sometimes desirable to use a flexible model structure that is able to approximate a wide range of systems. One such model structure is the Wiener class of systems, that is, systems where the input enters a linear time-invariant subsystem followed by a time-invariant nonlinearity. LÄS MER