In his 1952 paper “The Chemical Basis of Morphogenesis” Alan Turing suggested that a system of chemical substances, reacting together and diffusing through a tissue, would account for the generation of patterns in multicellular organisms. In this paper a simplified computer model is derived from his idea, successively elaborated and used for the production of artworks reminiscent of electron mi...

This thesis has been read by each member of the thesis committee, and has been found to be satisfactory regarding content, English usage, format, citations, biblio-graphic style and consistency, and is ready for submission to the College of Graduate Studies. Date iii STATEMENT OF PERMISSION TO USE In presenting this thesis in partial fullllment of the requirements for a doctoral degree at Monta...

Herbivorous fishes are being increasingly valued for their ecological function in coral reef systems, and consequently they have become the focus of management actions on many reefs around the world. Because many conservation actions require an understanding of the space use patterns of species of interest, there has been an increased effort in recent years to study the movement patterns and ho...

Biogeosciences Discussions This discussion paper is/has been under review for the journal Biogeosciences (BG). Please refer to the corresponding final paper in BG if available. Abstract Understanding biodiversity patterns and how they are driven at different spatial scales is a crucial issue in ecological studies. This is particularly evident for the deep sea, the largest biome of the biosphere...

In this study, 130 small-scale farmers were surveyed regarding pesticide use patterns in rural Phitsanulok, northern Thailand using a structured questionnaire administered via personal interviews and an observational checklist of farmer pesticide storage practices. The survey was conducted during December 2007-January 2008. The results indicate pesticides are readily available and widely used i...

Rapid increases in the computational speeds of multiprocessors have not been matched by corresponding performance enhancements in the I/O subsystem. To satisfy the large and growing I/O requirements of some parallel scientific applications, we need parallel file systems that can provide high-bandwidth and high-volume data transfer between the I/O subsystem and thousands of processors. Design of...

Rapid increases in the computational speeds of multiprocessors have not been matched by corresponding performance enhancements in the I/O subsystem. To satisfy the large and growing I/O requirements of some parallel scientific applications, we need parallel file systems that can provide high-bandwidth and high-volume data transfer between the I/O subsystem and thousands of processors. Design of...

A Family Interaction Patterns Scale (FIPS) consisting of 106 items pertaining to six areas of family functioning: leadership, communication, role, reinforcement, cohesiveness, social support system; was standardised by administering it to 30 neurotic depressives, 30 hysterical neurotics, 20 alcoholics and 30 normal, and one of their family members. HIPS mean score for depressives, hystericals, ...

Our planet shows striking gradients in the species richness of plants and animals, from high biodiversity in the tropics to low biodiversity in polar and high-mountain regions. Recently, similar patterns have been described for some groups of microorganisms, but the large-scale biogeographical distribution of freshwater phytoplankton diversity is still largely unknown. We examined the species d...

Phytoplankton constitute the main algal biomass in pelagic ecosystems and, therefore, play a fundamental role in the functioning of the marine trophic web. Information on long-term trends in marine phytoplankton may help to distinguish between biological responses to natural oscillations in climate and global warming, and to evaluate possible regional effects of eutrophication. The aim of this ...