Sökning: "convergence of point processes"

Visar resultat 1 - 5 av 22 avhandlingar innehållade orden convergence of point processes.

1. 1. Barycentric Markov processes and stability of stochastic integrators

   Författare :Philip Kennerberg; Matematisk statistik; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; geometric probability; dirichlet processes; Markov processes; stochastic integration; interacting particle systems;

   Sammanfattning : This thesis consists of four papers that broadly concerns two dierent topics. The rsttopic is so-called barycentric Markov processes. By a barycentric Markov process wemean a process that consists of a point/particle system evolving in (discrete) time,whose evolution depends in some way on the mean value of the current points in thesystem. LÄS MER

3. 2. Evolution of Techno-Economic Systems - An Investigation of the History of Mobile Communications

   Författare :Sven Lindmark; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; mobile data communications; application diversification; mobile telephony; standards; complementarities; diffusion; techno-economic systems; convergence; competition; technological change;

   Sammanfattning : The purpose of this thesis is to contribute to the understanding of how techno-economic systems emerge and evolve and how such processes can be analyzed. To these ends, the history of mobile communications is investigated, seen as a complex techno-economic system with two rapidly evolving and interacting subsystems - mobile telephony and mobile data communications - which are described, dissected and compared in case studies. LÄS MER

4. 3. Familjeföretag i omvandling : en studie av fusionsförlopp och utvecklingsmönster

   Författare :Christer Peterson; Umeå universitet; []
   Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Merger; family businesses; case study; aggregated level; economic data; longitudinal; multimethodological; typology; process; pattern; spatial and institutional change; restructuring industry;

   Sammanfattning : In this study a population of 60 family owned businesses acquired in 1971 are analysed over a period of 15 years. The firms are followed historically for four years before and ten years after the merger.The aim is to identify dominating processes and behaviour in different variables during the period 1967-81. LÄS MER

5. 4. Contributions to Numerical Solution of Stochastic Differential Equations

   Författare :Anders Muszta; Göteborgs universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; adaptive method; change of time; CIR model; CKLS model; convergence order; Euler method; heavy-tailed SDE; hyperbolic SDE; geometric integration; global Lipschitz condition; Levy process; Lie group method; local Lipschitz condition; local martingales; mean reversion; Milstein method; numerical method; semimartingale; stochastic differential equation; stochastic Taylor expansion; strong approximation; symplectic integration; volatility induced stationarity; waveform relaxation; volatility induced stationarity;

   Sammanfattning : This thesis consists of four papers: Paper I is an overview of recent techniques in strong numerical solutions of stochastic differential equations, driven by Wiener processes, that have appeared the last then 10 years, or so. Paper II studies theoretical and numerical aspects of stochastic differential equations with so called volatility induced stationarity. LÄS MER

7. 5. On Clustering of Random Points in the Plane and in Space

   Författare :Marianne Månsson; Göteborgs universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; geometric probability; integral geometry; convex sets; random intersections; mixed volumes; scan statistics; Poisson approximation; Stein-Chen method; convergence of point processes; scan statistics;

   Sammanfattning : If n points are independently and uniformly distributed in a large rectangular parallelepiped, A in Rd, d =2,3, they may possibly aggregate in such a way that they are contained in some translate of a given convex set C in A. If the points are replaced by copies of C, these translated sets may have a non-empty intersection. LÄS MER