No description available.

No description available.

No description available.

Three novel donor-acceptor systems have been characterised through their spectroscopic properties, magnetic susceptibility, conductivity and second harmonic generation. The magnetic properties of (H2DPE)xx+(DPE)^ x(TCNQ)gX and (H2DPA)xx+(DPA) 1 x(TCNQ)gX' where DPE = 1,2-di(4-pyridyl)ethylene, DPA = 1,2-di(4-pyridyl)ethane, TCNQ = tetracyanoquinodimethane and H2 signifies proton diquaternisation, have been found to depend upon the stoichiometry: For x > \ the magnetic susceptibility decreases with increasing x whereas for x ~ \ it is anomolously large, being ferromagnetically enhanced above the Curie Law value. A possible model involving spin dilution is proposed and its predictions are compared with the experimental results. Langmuir-Blodgett (LB) films of the long-chained analogues of the materials, (C^g)2DPE (TCNQ) 2 and (Cig^DPE^TCNQ)^" where (C16) 2 = bis(hexadecyl) were deposited and characterised. The conductivities of the LB films of the mixed valence system were found to be ~ 1000 times greater than those of the system lacking TCNQ^ molecules. Multiple layer LB films of trans-4-[4- (dimethylamino)styryl]-1- octadecylpyridinium iodide and trans-4-[4-(dimethylamino)styryl]-1- octadecylquinolinium iodide interleaved with 4,4'-dioctadecyl-3,5,3',5' -tetramethyldipyrrylmethene hydrobromide were deposited. The materials form an interlocking bilayer structure which renders their LB films exceptionally well-organised. The films’ second harmonic generation was investigated and one film was found to give the largest second harmonic signal yet seen from an LB structure.

Thesis (M.U.D.)--University of Hong Kong, 1998. / Includes bibliographical references (leaves 89-94).

Thesis (M.U.D.)--University of Hong Kong, 1998. / Includes bibliographical references (leaves 89-94) Also available in print.

As the population of the United States continues to grow as projected, it is clear that the need for new homes will grow with it. At the same time, there is increasing dissatisfaction with conventional sprawling suburban development. In response to this dissatisfaction, new types of alternative or “green” Greenfield developments are appearing all over the country. What these developments have in common is that they all strive to be better than conventional suburban development; better places to live that are also better for the environment. This report compiles a database of these different developments and their characteristics. Next, it examines if these “green” residential developments are in fact a success in the marketplace. To do this it looks at conventional and innovative real estate evaluation methods. A new evaluation tool that can be used to evaluate the market acceptance of the new generation of “green” Greenfield development is then proposed. Finally, the need for further study including the creation of an evaluation tool to measure the environmental “success” of these projects is examined. / text

Real estate development involves many complex, dynamic, and uncertain elements. In the pre-development stage, greater uncertainties result from the fact that the space being considered has not yet been created. Considering both the inherent characteristics of the real estate and the inefficiency of the market it operates in, any aid in the investment decision process is believed to add to the quality of the end product. This being the case, most, if not all, of the development companies make office development decisions using some kind of a procedure in the pre-development stage. However low occupancy rates and long payback periods that are being faced, even by the most recently completed Class A office projects in Turkey, show that there are serious deficiencies in these applied procedures and that they lack the necessary and important components of project feasibility analysis, which are basically the market and financial feasibility analysis, that needs to be applied in the pre-development stage of the office development process. That is why this study’s purpose is to explore and identify the deficiencies of the decision-making models currently used by Turkish real estate development companies in the pre-development stage of office development projects and to recommend necessary additions and/or deletions for the enhancement of these company models. To do so, this research involved interviews of ten office developers to identify their go/no-go decision processes in evaluating office developments in Istanbul, Turkey. The study has found that developers tend to fall under three different groups, each following different models: Group I includes exclusively construction companies, Group II includes mixed companies and Group III includes exclusively real estate investment companies. Furthermore, the research has found that similarities and differences among these three groups involve the following: While investment companies seek opportunities based on market research, decisions by construction companies are driven by the availability of land swaps. All three groups emphasize land availability and related title and land-use issues. Although unit-sale continues, there is a gradual shift to income property with the aid of improvement in the financial market, which is also reflected in the decision-making models being used.

Real estate development involves many complex, dynamic, and uncertain elements. In the pre-development stage, greater uncertainties result from the fact that the space being considered has not yet been created. Considering both the inherent characteristics of the real estate and the inefficiency of the market it operates in, any aid in the investment decision process is believed to add to the quality of the end product. This being the case, most, if not all, of the development companies make office development decisions using some kind of a procedure in the pre-development stage. However low occupancy rates and long payback periods that are being faced, even by the most recently completed Class A office projects in Turkey, show that there are serious deficiencies in these applied procedures and that they lack the necessary and important components of project feasibility analysis, which are basically the market and financial feasibility analysis, that needs to be applied in the pre-development stage of the office development process. That is why this study’s purpose is to explore and identify the deficiencies of the decision-making models currently used by Turkish real estate development companies in the pre-development stage of office development projects and to recommend necessary additions and/or deletions for the enhancement of these company models. To do so, this research involved interviews of ten office developers to identify their go/no-go decision processes in evaluating office developments in Istanbul, Turkey. The study has found that developers tend to fall under three different groups, each following different models: Group I includes exclusively construction companies, Group II includes mixed companies and Group III includes exclusively real estate investment companies. Furthermore, the research has found that similarities and differences among these three groups involve the following: While investment companies seek opportunities based on market research, decisions by construction companies are driven by the availability of land swaps. All three groups emphasize land availability and related title and land-use issues. Although unit-sale continues, there is a gradual shift to income property with the aid of improvement in the financial market, which is also reflected in the decision-making models being used.

No description available.