Thesis (Ph. D.)--Open University. BLDSC no. DX204584.

Thesis (MTech (Built Environment))--Peninsula Technikon, 2001. / Word processed copy. Summary in English. Includes bibliographical references (leaves 139-151). Also available online.

Thesis (M.S.)--Oregon State University, 2007. / Printout. Includes bibliographical references. Also available on the World Wide Web.

published_or_final_version / Conservation / Master / Master of Science in Conservation

No description available.

Tang Sin Ying. / "Architecture Department, Chinese University of Hong Kong, Master of Architecture Programme 2004-2005, design report."

The aim of this work was to use simulation as a tool to better understand areas of orthokinetic (shear-induced) aggregation which are still not well understood. These areas include aggregate structure, aggregate strength, breakup and restructuring and combined perikinetic/orthokinetic aggregation. Previous simulation studies were reviewed and it was concluded that the methodology of Chen and Doi (1989) was an appropriate starting point for this study. The modified simulation was validated by comparison with theoretical and experimental results. Orthokinetic aggregates were found to have a fractal structure with an estimated value of 1.65. Scaling exponents, which were shown to be indicative of fractal dimension, of 2.1-2.7 were also obtained. Flexible bonds allowed restructuring to occur which led to an increase in the co-ordination number, scaling exponent, aggregate strength and a reduction in aggregate size. Thus aggregate strength increases with fractal dimension. It was confirmed that both restructuring and breakup/reformation could lead to the formation of small, compact aggregates. The high shear conditions simulated favoured breakup/reformation, while restructuring was expected to dominate with more flexible bonds, possibly at lower shear rates. Taking some account of hydrodynamic interactions by the inclusion of Kirkwood-Riseman theory led to an increase in the compactness of the aggregates and the co-ordination numbers, as well as a decrease in size of the aggregates. The results showed that hydrodynamic interactions can not be ignored. The explanation for the dramatic effects was that particles/microflocs on the outer edges of the aggregates broke off and reformed in a more compact way. Erosion was found to dominate in all cases, thus supporting the theory that erosion dominates at higher fractal dimensions. The shearing range simulated was found to be relatively high (equivalent to &lt200s-1 for particles of 2-5??m), producing relatively small aggregates. Hence it is proposed that under high shear conditions, erosion dominates. It was shown by extension of the DLCA algorithmic restructuring work of Meakin and Jullien (1988, 1989) that the scattering patterns observed in gently sheared aggregating systems are consistent with the interpretation that the shearing causes partial restructuring at large length scales.

Thesis (Ph. D.)--University of Texas at Austin, 2000. / Vita. Includes bibliographical references (leaves 315-323). Available also in a digital version from Dissertation Abstracts.

The institution of property rights, as an important category of constraints or restrictions on human behaviour, provides rules of competition, and delineates the social and legal relationship between a resource owner and the others throughout the world. Forms of ownership rights to resources affect the efficiency of their use. The consensus is that in a real world with significant transactions costs and scarce resources, private property right systems lead to more efficient resource allocation than the others do. Previous studies about economic implications of non-exclusive resources have focused on the problems of resource misallocations. A few studies also worked on the effects that alternate property rights structures have on the prices and variations in prices of non-exclusive resources. However, the economic analysis of property rights attribute of natural resources used as building materials, such as natural sand and wood, is still an unexplored research area. The objective of the whole research is to empirically verify Angello and Donnelley's (1975) property rights thesis, as reinterpreted by Lai (1993a) and Lai and Yu (1995), that the variations in prices of non-exclusive resources are much greater than those under more exclusive ownership; and to identify, alternatively, the factors that might have affected ownership rights, inferred from changes in the variations in prices of the resources. In this thesis, published historical data of natural sand, Total declared costs of new buildings completed, Gross & Usable floor area, Gross value of construction work, and published government data of prices for selected buildings materials, namely Portland cement, sand, hardwood, and plywood, were used. The prices of captured and cultured shrimps, which are collected from super market and street market by the author, were also checked and used. These resources are subject to different degrees of access restrictions and, hence, are good candidates for testing the hypotheses. Basically, the hypotheses formulated in this research are strongly supported. The main findings are that the variations in prices of non-exclusive resources are greater than those of exclusive resources; for the same resource, the price ratios of exclusive resource and non-exclusive resource would fall over time. This is an original contribution to the theory of property rights. The originality of this dissertation lies in its exploration of the economic relationship between property rights ownership and selected building materials, as well as in the application of variances to the research of building materials. This is a novel contribution to research on Hong Kong’s sustainable development as she heavily relies on the real estate market for economic development. / published_or_final_version / Real Estate and Construction / Doctoral / Doctor of Philosophy

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