Neural stem and progenitor cells (NSPCs) proliferate throughout life in two regions of the brain, namely the subventricular zone (SVZ) of the lateral ventricles and the subgranular zone of dentate gyrus in the hippocampus. In the adult SVZ, NSPCs give rise to neuroblasts that leave the SVZ for long distance migration along the rostral migratory stream (RMS), on their way to the olfactory bulb w...

In this work, a selection of unresolved topics regarding the electronic and atomic structures of Si and Ge surfaces, both clean ones and those modi ed by metal adsorbates, are addressed. The results presented have been obtained using theoretical calculations and experimental techniques such as photoelectron spectroscopy (PES), low energy electron di raction (LEED) and scanning tunneling microsc...

This document describes the methods that were used when implementing support vector machines for classification and stratification of children with acute lymphoblastic leukaemia (ALL), and the underlying variable interaction used by these machines during training. ALL stands for a third of all patients with cancer and is demonstrated with an overpopulation of immature Band T-lymphocytes (compon...

A LCD (Liquid Crystal Display) consists of two glass substrates glued together with a small gap (called cell gap) in-between them. The gap is filled with a liquid crystal. To produce a display with good viewing characteristics it is very important that this gap, and other parameters, gets the right dimension. There are formulas that can be used to calculate which cell gap that is appropriate in...

A number of animal species have undergone domestication, the process of becoming adapted to living in captivity and in proximity to humans. Common for these species is that they have all developed certain traits, including changes to coat color, body size and level of fearfulness. This has been termed the domestic phenotype. Among these traits is also an attenuation of the response to stress, b...

Drugs of abuse regulate the expression of several genes involved in receptor regulation and signalling, transcription factors and cytoskeleton proteins. Due to its implication in long-term memory consolidation, rat hippocampus was selected to identify genes that are differently regulated by morphine and/or cocaine administration. The animals were randomly separated into four groups given saline...

Robustness is an important property for any object recognition system. A way to increase robustness is by using multiple cues. This thesis proposes a cue-integration scheme for discriminative classifiers. The basic idea is to use one classifier for each cue and combine the outputs of the classifiers. The outputs are combined through weighted summation, which allows different cues to have differ...