published_or_final_version / Economics / Master / Master of Social Sciences

Thesis (Ph. D.)--University of Texas at Austin, 2004. / Supervisor: Katherine A. Liapi. Vita. Includes bibliographical references. Also available from UMI.

Thesis (M.B.A.)--University of Hong Kong, 1996. / Includes bibliographical references.

No description available.

The increased need for electric power combined with an aging underground cable infrastructure in a deregulated market environment have forced utilities to refocus their attention on reliability while at the same time reducing maintenance costs as much as possible. This has created a significant need for diagnostic methods and technologies to assess the condition of the underground cable systems. However, while several cable diagnostic technologies are available, they have not all yet been fully accepted in the United States. This is because the different technologies lead to different conclusions for the same cable system, and thus utilities do not completely trust the conclusions. A better understanding of the diagnostic technologies and their correct application is therefore required. The most widely used diagnostic technologies in the United States include dissipation factor (Tan-delta and partial discharge measurements; these tests are therefore, the main focus of this thesis; in particular, when applied to underground extruded cable systems. The purpose of this research is to advance the field of characterization of power cable defects by addressing a number of theoretical and practical diagnostic measurements and their interpretation issues. The discussion is based on data from laboratory experiments and field tests. This thesis consists of two major parts. The first part is devoted to the characterization by Tan-delta measurements in which the major contribution is a new approach for condition assessment using this technology. The second part is devoted to the work on characterization by partial discharge measurements, and the major contribution is a novel approach that is able to analyze, evaluate, and reduce the number of partial discharge diagnostic features.

This report entails the market validation, business planning and strategic planning for a full scale cable wake boarding park. Euphoria Wake Park has a vision to be open the first cable park in New Zealand. At this stage of the business, Auckland has been researched and the company is looking into moving into the resource consent process. While researching the potential for the cable park, it was found that although there it is very viable for Euphoria Wake Park to start in Auckland, the current stakeholders do not have the sufficient capital to do so. In order for this business to proceed, the current stakeholders of Euphoria Wake Park must work toward confirming resource consent and gaining external capital from investors.

No description available.

Study on how fair and balanced the three cable news networks were in their coverage of the 2012 presidential election.

Em estruturas estaiadas de pontes e viadutos, a determinação das forças dos estais necessariamente está relacionada à ação direta dos carregamentos mais a interação com a deformabilidade do estaiamento, incluindo principalmente o sistema tabuleiro e mastro. Por outro lado, é necessário conhecer estas forças ao longo das fases de montagem, assim como sua adequada implantação na estrutura e a determinação de possíveis ajustes nas forças devido ao processo construtivo da ponte, garantindo assim que os esforços desejados sejam alcançados e a correta distribuição espacial das forças do estaiamento. O conhecimento das forças dos estais é de extrema importância no controle dos deslocamentos e esforços da estrutura em questão, tendo este trabalho foco no greide e nos esforços finais do tabuleiro da ponte estaiada. As forças podem ser obtidas a partir da solução de um problema fundamental que consiste na determinação de acréscimos de força nos estais, necessários para atingir ou controlar um vetor de deslocamentos, ou um vetor de momentos fletores. De maneira geral, no caso de pontes construídas com aduelas (balanços sucessivos), para cada aduela anexada os esforços e deslocamentos são alterados nas aduelas já executadas, e principalmente nos estais já montados. A montagem deve garantir o greide final do tabuleiro e o conjunto de esforços desejados, o que se consegue com uma criteriosa definição dos esforços de montagem dos cabos. No mais, em função da sequência construtiva e do programa de tensionamento dos estais estabelecido para a obra, pode se tornar necessária a aplicação de uma correção sequencial das forças dos estais para se chegar às forças finais previstas em projeto.Será apresentado neste trabalho o procedimento de controle do greide final e dos esforços do tabuleiro da ponte e o de montagem dos estais, sendo este último, dividido na definição das forças dos cabos ao longo da montagem, na implantação destas forças na estrutura e num procedimento de correção sequencial das forças dos estais a partir da determinação de forças de ajuste. / In cable-stayed structures of bridges and viaducts, the determination of the stay forces is necessarily related to the direct action of loads plus interaction with the deformability of the staying, including especially the system deck and mast. On the other hand, it is necessary to know these forces along the assembly phases, as well as their proper implementation in the structure and determination of possible adjustments in forces due to bridge construction process, ensuring that the desired forces are achieved and the correct spatial distribution of forces of the staying. The knowledge of the stay forces is extremely important in controlling of the displacements and forces of the structure in question, having this work focus on shape and final forces of the cable-stayed bridge deck. The forces can be obtained from the solution to a fundamental problem that consists in the determination of increases strength in the stays, required to reach or control an array of displacements, or a vector of bending moments. In general, in the case of bridges constructed with staves (cantilever procedure), for each attached stave the forces and displacements are changed in staves already implemented, and especially in the stays already assembled. The assembly must ensure final shape of the deck and all forces desired, what can be achieved with a careful definition of the assembly forces of the cable. In addition, according to the sequence of constructive and the program tensioning of the stays established for the construction, may become necessary to apply a sequential correction of the strengths of the stays to reaching at the final forces provided in project.It will be presented in this work the procedure of control final shape and bridge deck forces and the assembly of stays, the latter divided in defining the forces of the cables along the assembly, deployment of these forces in the structure and a sequential correction procedure of the stay forces from the determination of adjustment forces.

by Chun-kit Chan. / Thesis (M.Phil.)--Chinese University of Hong Kong, 1995. / Includes bibliographical references (leaves 68-[73]). / Chapter 1 --- A High-Speed All-Optical Tunable-Channel Multi-Access (TCMA) Network --- p.1 / Chapter 1.1 --- Introduction --- p.1 / Chapter 1.2 --- Tunable-Channel Multi-Access (TCMA) Networks --- p.4 / Chapter 1.3 --- Protocols For TCMA Networks --- p.5 / Chapter 1.3.1 --- Media Access Procedure For ACTA Protocol --- p.6 / Chapter 1.3.2 --- Cyclc Utilization & Adaptive Algorithm --- p.8 / Chapter 1.3.3 --- Advantages of ACTA Protocol --- p.9 / Chapter 1.4 --- Proposed High-Speed Photonic TDM Implementation --- p.10 / Chapter 1.4.1 --- Centralized Pulse Source --- p.12 / Chapter 1.4.2 --- Channel-Tunable Transmitter --- p.14 / Chapter 1.4.3 --- High Speed All-Optical Demultiplexing --- p.22 / Chapter 1.4.4 --- Timing and Synchronization --- p.23 / Chapter 1.4.5 --- Advantages of the Proposed Scheme --- p.24 / Chapter 1.5 --- Other Network Issues --- p.25 / Chapter 1.5.1 --- Scalability --- p.25 / Chapter 1.5.2 --- Surviability --- p.26 / Chapter 1.5.3 --- Cost-Effectiveness --- p.27 / Chapter 1.6 --- Conclusion --- p.28 / Chapter 2 --- Theoretical Analysis of High Repetition Rate Optical Pulse Multiplication using Fiber Coupler Loop Configuration --- p.29 / Chapter 2.1 --- Introduction --- p.29 / Chapter 2.2 --- Single Coupler Loop Configuration --- p.30 / Chapter 2.3 --- Cascaded Coupler Loop Configuration --- p.34 / Chapter 2.4 --- Discussion --- p.36 / Chapter 2.5 --- Conclusion --- p.38 / Chapter 3 --- Spectrum Analysis of Multichannel CATV Systems --- p.39 / Chapter 3.1 --- Introduction --- p.39 / Chapter 3.2 --- Considerations of Analysis of Multichannel CATV Systems --- p.41 / Chapter 3.3 --- Effects of Incomplete-cycle Sampling --- p.43 / Chapter 3.4 --- Methods to Alleviate the Incomplete-cycle Sampling Effcct --- p.48 / Chapter 3.4.1 --- Windowing --- p.48 / Chapter 3.4.2 --- Correction --- p.54 / Chapter 3.5 --- Nonlinear Distortion in Multichannel CATV Systems --- p.55 / Chapter 3.5.1 --- Two-tone Third Order Distortion Estimation --- p.56 / Chapter 3.5.2 --- Composite Triple Beat Estimation --- p.62 / Chapter 3.6 --- A Procedure of Spectrum Analysis for Multichannel CATV Systems --- p.64 / Chapter 3.7 --- Conclusion --- p.67 / Bibliography --- p.68 / Chapter A --- Implementation of a high-speed TCMA optical network --- p.74 / Chapter A.1 --- System Setup --- p.74 / Chapter A.2 --- Channel-tunable Delay Line Circuit --- p.75 / Chapter A.3 --- DFB Laser diode --- p.76 / Chapter A.4 --- Erbium-doped Fiber Amplifier (EDFA) --- p.76 / Chapter A.5 --- 1 Gb/s to 16 Gb/s Fiber Multiplexer --- p.77 / Chapter A.6 --- Nonlinear Amplifying Loop Mirror (NALM) --- p.77 / Chapter A.7 --- Decision Circuit --- p.78 / Chapter B --- Frequency Assignment Scheme of CATV Systems --- p.79 / Chapter C --- Derivation --- p.80 / Chapter C.1 --- Channel Carrier Power Level Variation with Rectangular Window --- p.81 / Chapter C.2 --- Channel Carrier Power Level With Hanning Window Function ´Ø --- p.82 / Chapter C.3 --- Correction Factor for the Channel Carriers --- p.83 / Chapter C.4 --- Correction Scheme for Distortion Terms --- p.83