Sökning: "Tom Britton"

Visar resultat 11 - 15 av 18 avhandlingar innehållade orden Tom Britton.

  1. 11. Some advances in Respondent-driven sampling on directed social networks

    Författare :Jens Malmros; Tom Britton; Fredrik Liljeros; Simon Frost; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Mathematical Statistics; matematisk statistik;

    Sammanfattning : Respondent-driven sampling (RDS) is one of the most commonly used methods when sampling from hidden or hard-to-reach populations. The RDS methodology combines an improved snowball sampling scheme with a mathematical model that is able to produce unbiased population estimates given that some assumptions about the actual recruitment process are fulfilled. LÄS MER

  3. 12. Studies in respondent-driven sampling : Directed networks, epidemics, and random walks

    Författare :Jens Malmros; Tom Britton; Fredrik Liljeros; Erik Volz; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Mathematical Statistics; matematisk statistik;

    Sammanfattning : Respondent-driven sampling (RDS) is a link-tracing sampling methodology especially suitable for sampling hidden populations. A clever sampling mechanism and inferential procedures that facilitate asymptotically unbiased population estimates has contributed to the rising popularity of the method. LÄS MER

  4. 13. Data driven mathematical models for policy making

    Författare :Betty Nannyonga; David Sumpter; JYT Mugischa; LS Luboobi; Tom Britton; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; MATHEMATICS; MATEMATIK; Matematik med inriktning mot tillämpad matematik; Mathematics with specialization in Applied Mathematics;

    Sammanfattning : This thesis consists of two papers. 1. Betty Nannyonga, D.J. LÄS MER

  5. 14. Random networks with weights and directions, and epidemics thereon

    Författare :Kristoffer Spricer; Tom Britton; Pieter Trapman; Istvan Kiss; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Epidemics; Reproduction number; Final size; Large outbreak; Weighted network; Undirected; Partially directed; Configuration model; Copula; Mathematical Statistics; matematisk statistik;

    Sammanfattning : Networks, consisting of nodes and of edges, can be used to model numerous phenomena, e.g, web pages linking to each other or interactions between people in a population. LÄS MER

  7. 15. Dynamic Modelling of Communicable and Non-Communicable Diseases

    Författare :Theresa Stocks; Michael Höhle; Tom Britton; Niel Hens; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : This thesis consists of two papers dealing with the stochastic dynamic modelling of one communicable and one non-communicable disease respectively. In the first paper we derive a patient- and organ-specific measure for the estimated negative side effects of radiotherapy using a stochastic logistic birth-death process. LÄS MER