Colour for the Advancement of Deep Learning in Computer Vision

This thesis explores several research areas for Deep Learning related to computer vision concerning colours. First, this thesis considers one of the most long standing challenges that has remained for Deep Learning which is, how can Deep Learning algorithms learn successfully without using human annotated data? To that end, this thesis examines using colours in images to learn meaningful representations of vision as a substitute for learning from hand-annotated data. Second, is another related topic to the previous, which is the application of Deep Learning to automate the complex graphics task of image colourisation, which is the process of adding colours to black and white images. Third, this thesis explores colour spaces and how the representations of colours in images affect the performance in Deep Learning models

Two-dimensional topological solitons in rectangular magnetic dots

A general approach allowing to find the analytical expressions for equilibrium magnetic structures in small and flat magnetic nano-sized cylinders of arbitrary shape made of soft magnetic material is presented. The resulting magnetization distributions are two-dimensional topological solitons and have a non-zero topological charge. The approach is illustrated here on an example of a thin rectangular particle.Comment: 3 pages, 2 figures, RevTex, for SCM2001 (Seeheim, Germany, 2001), satellite of JEMS'01 conferenc

Assaying activity and assessing thermostability of hyperthermophilic enzymes

There is now a wide variety of intra- and extra-cellular enzymes available from organisms growing above 75°C, and having sufficient stability to allow assay well above this temperature. For some of these enzymes, to assay below even 95°C will involve measurement below the optimal growth temperature for the organism. The purpose of this chapter is to cover practical aspects of enzyme assay procedures that are specific to high temperatures. Since by far the commonest routine assessment of enzyme stability is activity loss, and because it is always unwise to measure enzyme activity without being confident of its stability during the assay, we include an outline of procedures for measuring enzyme activity loss/stability at high temperatures