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When simulating small probabilities, say of order 10-6 or less, by importance sampling, an established principle is to choose the importance sampling distribution as close to the conditional distribution given the rare event as possible. Implementing this often leads into large deviations calculations and exponential change of measure. We survey some of the standard examples where this
Lärobok i dynamisk psykoterapi bestående av III delar. Del I Teoretiska utgångspunkter Del II Fallbeskrivningar; barn och vuxenpsykoterapi Del III Lärandeguide med seminarieförslag utifrån PBL och casemetodik
The sialyl Lewis x (SLex) tetrasaccharide is the smallest recognizable ligand for selectins. The selectins constitute a vital part of the inflammatory cascade for recruitment of leukocytes to a site of tissue damage or microbial infection. If too many leukocytes are recruited, normal, not injured, cells can be damaged; a process known from chronic inflammatory diseases such as reumatoid arthritis,
The unfolding of choral history and the development of pedagogical ideas largely depend on a combination of social and musical factors. This is what makes choral research both interesting and challenging. Choral representation of societal change does emerge at different historical periods in the European countries – for example in connection with the French Revolution, in Sweden after World War II
The former close relation between producer and consumer has gradually disappeared in the industrialisation and globalisation of the food industry. As a result a need for traceability has emerged. It is difficult today for consumers to know if the products they purchase live up to their specifications due to poor communication between the food industry and consumers. This gap between can be address
The conceptual shift in the expectations of wireless users towards multimedia andgroup-oriented computing has a significant impact on today̕s networks in terms of needfor mobility, quality of service (QoS) and multicast routing. Mobile ad hoc networks can provide users with these features. However, it is imperative for them to combine QoS andmulticast routing strategies in order to utilize the wir
Accurate radiation dosimetry is of paramount importance in order to ensure safe delivery of radiotherapy, and for the possibility of meaningful evaluation of clinical trials, as the radiation absorbed dose is correlated to tissue response. The aim of the studies described in this thesis was to investigate and devise novel approaches to mixed beam dosimetry in boron neutron capture therapy (BNCT).
This thesis comprises four papers reporting results from a project studying the fear of flying phenomenon. Paper I is an evaluation study of a new percept-genetic instrument, the Flight Situation Test (FST). A group of 24 subjects with a fear of flying (FoF) and 19 controls (non-FoF) were tested. The test instrument turned out to be valuable in pinpointing differences between the groups, and was i
