Abstracts for the talks

ASN Seminar

Stochastic Centre, Göteborg, November 16, 2001


Bioinformatics and statistical genetics

Ola Hössjer

Statistical methods for localization of genes along the chromosomes were developed already fifty yeares ago. However, with the availability of many genetic markers and large pedigrees, new methods have been developed. The goal is to map the disease genes that increase susceptibility to complex disorders. Often, the genetic component is the result of the interaction of many genes with small individual effects. Therefore, the statistical task is difficult and challenging. In the talk I will give an overview, present som recent theoretical results, and also briefly describe joint cooperation with the dept. of Endocrinology in Malmö (regarding type 2 diabetes ) and the division of Oncology in Lund (regarding breast cancer).


Fatigue and stochastic loads

Pär Johannesson

The phenomenon that a material gradually deteriorates when it is subjected to repeated loadings is called fatigue. The variability of the fatigue life is due to both the material and the applied loading. Some background on fatigue and load analysis is given. The main topic of this talk is to model the load as a stochastic process and evaluate its impact on the fatigue damage, especially by the so-called rainflow cycle counting method. System reliability is discussed, taking the applied loadings of customers and the strength of a component into account.


Stochastics in telecommunication

Ingemar Kaj

Recently a Committee on Research Horizons in Networking appointed by the US Academy of Sciences summarized their discussions by pointing out three key areas for networking research: measuring the Internet, modeling the Internet, and making disruptive prototypes. As a central aspect the committee poses a grande challenge to statistics: take a snapshot of a day in the life of the Internet.

This is one example of future research where stochastic methodology can have a big impact. I will summarize previous efforts to create in short time an effective research environment on stochastic methods in telecommunications with activities in Göteborg, Lund and Uppsala, and a current proposal to consolidate and strengthen this area of applied mathematics in Sweden. The proposed program in particular supports the use of stochastic methods for data- and teletrafic on the wireless Internet and in mobile communication systems.



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Last modified: Tue Nov 13 08:24:29 MET 2001