Rechargeable batteries are found in almost every battery powered application. Be it portable, stationary or motive applications, these batteries go hand in hand with battery charging systems. With energy harvesting being targeted in this day and age, high energy density and longer lasting batteries with efficient charging systems are being developed by companies and original equipment manufacturers. Whatever the application may be, rechargeable batteries, which deliver power to a load or system, have to be replenished or recharged once their energy is depleted. Battery charging systems must perform this replenishment by using very fast and efficient methods to extend battery life and to increase periods between charges. In this regard, they have to be versatile, efficient and user programmable to increase their applications in numerous battery powered systems. This is to reduce the cost of using different battery chargers for different types of battery powered applications and also to provide the convenience of rare battery replacement and extend the periods between charges. This thesis proposes a user programmable charging system that can charge a Lithium ion battery from three different input sources, i.e. a wall outlet, a universal serial bus (USB) and an energy harvesting system. The proposed charging system consists of three main building blocks, i.e. a pulse charger, a step down DC to DC converter and a switching network system, to extend the number of applications it can be used for. The switching network system is to allow charging of a battery via an energy harvesting system, while the step down converter is used to provide an initial supply voltage to kick start the energy harvesting system. The pulse charger enables the battery to be charged from a wall outlet or a USB network. It can also be reconfigured to charge a Nickel Metal Hydride battery. The final design is implemented on an IBM 0.18µm process. Experimental results verify the concept of the proposed charging system. The pulse charger is able to be reconfigured as a trickle charger and a constant current charger to charge a Li-ion battery and a Nickel Metal Hydride battery, respectively. The step down converter has a maximum efficiency of 90% at an input voltage of 3V and the charging of the battery via an energy harvesting system is also verified.

Increasing pressure from environmental, political and economic sources are driving the development of an electric vehicle powertrain. The advent of hybrid electric vehicles (HEVs), plug-in hybrid electric vehicles (PHEVs), and battery electric vehicles (BEVs) bring significant technological and design challenges. The success of electric vehicle powertrains depends heavily on the robustness and longevity of the on-board energy storage system or battery. Currently, lithium-ion batteries are the most suitable technology for use in electrified vehicles. The majority of literature and commercially available battery performance data assumes a working environment that is at room temperature. However, an electrified vehicle battery will need to perform under a wide range of temperatures, including the extreme cold and hot environments. Battery performance changes significantly with temperature, so the effects of extreme temperature operation must be understood and accounted for in electrified vehicle design. In order to meet the aggressive development schedules of the automotive industry, electrified powertrain models are often employed. The development of a temperature-dependent battery model with an accompanying vehicle model would greatly enable model based design and rapid prototyping efforts. This paper empirically determines the performance characteristics of an A123 lithium iron-phosphate battery, re-parameterizes the battery model of a vehicle powertrain model, and estimates the electric range of the modeled vehicle at various temperatures. The battery and vehicle models will allow future development of cold-weather operational strategies. As expected the vehicle range is found to be far lower with a cold battery back. This effect is seen to be much more pronounced in the aggressive US06 drive cycle where the all-electric range was found to be 44% lower at -20°C than at 25°C. Also it was found that there was minimal impact of temperature on range above 25°C

Between 1950s and 1990s, Hong Kong had a frenzy for writing and re-writing materials from classical literature and myths. The myth of Madame White Snake is one of the most well known stories that survived a long period of time. The earliest known version of Madame White Snake was a supernatural story in 1550, which later became a prototype of numerous subsequent versions starting in 1624. This prototype was repeatedly re-written throughout history and was also made into different genres including plays, playlets, novels, films and television dramas. One of the latest versions was written by Li Pikwah, a popular novelist in Hong Kong, in 1993, titled, Green Snake. Green Snake is a parody of Madame White Snake written from the perspective of Little Green, the servant of Madame White and an auxiliary figure in the tradition. The novel is also an autobiography of Little Green, who satirically criticizes the story of Madame White Snake in retrospect. Little Green’s autobiography is a nostalgic reflection of the past as well as a critique of the structure of the story that has survived throughout history. These implications made in the story hint at the author’s personal yearning for traditional China as a Chinese resident in Hong Kong. Her nostalgia for traditional China is not idealistic but paradoxical, because her re-writing of the story was an avenue to understand and re-negotiate her identity. Li is also well-known for her other novels, which are parodies of classical literature, traditional myth and legend. Many of these works were also made into films in the 80’s and 90’s. These novels and films were part of a phenomenon in contemporary Hong Kong literary and popular culture that tried to grasp a cultural connection with traditional China in order to embrace the return to mainland China in 1997 after a hundred years of British colonial rule.

Thesis (M.Phil.)--Hong Kong University of Science and Technology, 2008. / Includes bibliographical references (p. 81-85).

Thesis (M.Phil.)--Hong Kong University of Science and Technology, 2004. / Includes bibliographical references (leaves 153-166). Also available in electronic version. Access restricted to campus users.

Thesis (M.Phil.)--Hong Kong University of Science and Technology, 2004. / Includes bibliographical references (leaves 323-342). Also available in electronic version. Access restricted to campus users.

Thesis (Ph. D.)--University of Hong Kong, 2006. / Title proper from title frame. Also available in printed format.

Diss. : Philosophische Fakultät : Freiburg, Schweiz : 1981. - Bibliogr. p. 196-203. -

O presente trabalho testa uma alternativa de ajuste da estrutura a termo da taxa de juros brasileira bem como a sua previsão através de uma variação do modelo Diebold e Li (2006) focando principalmente em seu fator de decaimento exponencial. Esta variação do fator de decaimento ocorre distintamente em dois momentos do trabalho, primeiramente no ajuste da curva e após quando da previsão desta. No ajuste, o encontro deste parâmetro é feito através de ferramenta computacional, buscando o fator de decaimento que reduz a diferença de mínimos quadrados em relação aos pontos originais capturados no mercado de juros futuro brasileiro em conjunto dos três outros fatores do modelo. A previsão da estrutura a termo utiliza modelos auto regressivos para estimar as próximas curvas no horizonte de um período. A importância deste estudo reside em conhecer a aderência do modelo proposto à curva de juros brasileira testando sua eficiência quando utilizados os pressupostos enunciados. / This study tests an alternative adjustment of the term structure of Brazilian interest rate and its prediction through a variation of the Diebold and Li (2006) model focusing mainly on his exponential decay factor. The variation of the decay factor occurs in two distinct moments of this work, in the curve fitting and after this in the forecasting. During the setting, this parameter is mesured through computational tool, seeking the decay factor that reduces the difference in least squares relative to the original points captured in the Brazilian market future interest together the other three factors of the model. To Forecast the term structure is used auto regressive models to estimate the upcoming curves. The importance of this study lies in knowing the adherence of the proposed to the Brazilian yield curve testing its efficiency when utilized the assumptions listed in the model.

This dissertation is a history of interpretation and interlinear commentary translation of the "Li Sao," an allegorical poem attributed to the late Warring States (475-221 BCE) poet Qu Yuan. I argue that the significance of the poem is an historically constituted and changing interpretation produced in a sequence of editions, and that insofar as translation is the necessary tool of Sinology, our scholarship and teaching should rest on a translation practice that visibly reflects the particularly Chinese material and reception histories of our texts. I analyze the rhetorical strategies by which specific interpreters, including Sima Qian, Wang Yi, Hong Xingzu, Zhu Xi, and Guo Moruo, "translate" the "Li Sao" through history, constructing personas of Qu Yuan that speak to the politics of their own respective eras. The last chapter is a new translation of the "Li Sao" based on my investigation of the poem's history. It contains multiple English renderings and diverse selections of historical commentary, presented in interlinear form, in order to facilitate historically critical understanding of the "Li Sao" and demonstrate the breadth of interpretation that it is possible to derive from the text. The translation offers not a single interpretation of the poem but rather an image of the historical dialogue that has produced and disputed it in interpretations from the Han dynasty to the present.