Sökning: "Yuri Belyaev"

Hittade 3 avhandlingar innehållade orden Yuri Belyaev.

  1. 1. Some Statistical Aspects of Cancer Risk Estimation

    Författare :Johan Eklund; Lennart Bondesson; Yuri Belyaev; Tom Britton; Umeå universitet; []
    Nyckelord :Cancer risk; competing risk model; prediction; familial cancer; hierarchic model; method of moments; maximum likelihood; MCMC;

    Sammanfattning : .... LÄS MER

  3. 2. Perturbed Renewal Equations with Non-Polynomial Perturbations

    Författare :Ying Ni; Dmitrii Silvestrov; Anatoliy Malyarenko; Yuri Belyaev; Mälardalens högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Renewal equation; perturbed renewal equation; non-polynomial perturbation; exponential asymptotic expansion; risk process; ruin probability; Mathematical statistics; Matematisk statistik; Mathematics Applied Mathematics; matematik tillämpad matematik;

    Sammanfattning : This thesis deals with a model of nonlinearly perturbed continuous-time renewal equation with nonpolynomial perturbations. The characteristics, namely the defect and moments, of the distribution function generating the renewal equation are assumed to have expansions with respect to a non-polynomial asymptotic scale: $\{\varphi_{\nn} (\varepsilon) =\varepsilon^{\nn \cdot \w}, \nn \in \mathbf{N}_0^k\}$  as $\varepsilon \to 0$, where $\mathbf{N}_0$ is the set of non-negative integers, $\mathbf{N}_0^k \equiv \mathbf{N}_0 \times \cdots \times \mathbf{N}_0, 1\leq k . LÄS MER

  4. 3. Statistical analysis and simulation methods related to load-sharing models

    Författare :Patrik Rydén; Yuri Belyaev; Uwe Jensen; Umeå universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Non-parametric and parametric estimation; load-sharing models; asymptotic distribution; martingale; resampling; life testing; reliability;

    Sammanfattning : We consider the problem of estimating the reliability of bundles constructed of several fibres, given a particular kind of censored data. The bundles consist of several fibres which have their own independent identically dis-tributed failure stresses (i.e.the forces that destroy the fibres). LÄS MER