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International Telemetering Conference Proceedings / October 26-29, 1992 / Town and Country Hotel and Convention Center, San Diego, California / This paper gives detailed ideas and methods about the design and development of high performance MIL-STD-1773 airborne fiber optic data bus. To reject impulsive interference efficaciously, the large core and large numerical aperture fiber optics are adopted, as well as high- emitted power LEDs and a low noise optical receiver structure to get high signal-to-noise ratio at decision time. Two new modulation technique----digital frequency shift keying and partial tri-level Manchester are recommended, which are very attractive in the design of modern optical bus. Meanwhile, VLSI chips COM1553B are used to construct bus control interface unit, thus many advantages have been brought out.

Thesis (M. A.)--University of Hong Kong, 2007. / Title proper from title frame. Also available in printed format.

Thesis (M. A.)--University of Hong Kong, 2007. / Title proper from title frame. Also available in printed format.

Thesis (M. A.)--University of Hong Kong, 2007. / Title proper from title frame. Also available in printed format.

A reliable scheme to reuse IP (Intellectual Property) cores became an important issue to accelerate the development of embedded systems. Unfortunately the diverse characteristic of embedded systems which deep the difficulty of IP reuse. This thesis proposed the OCP-AHB bus interface architecture by designing a standard and general interface. The IP cores with OCP interface can plug-an-play in bus quickly. It solve the environment problems of the diverse embedded systems and the compatibility issues between IP cores and on-chip interconnections, so the IP reuse ability are raised and the IP designer can focus only on their designs. There are four different versions of OCP-AHB bus interface according to the input and output interface designs. The porposed OCP-AHB bus interface has the better performance and small hardware area when IP transfer data each others through the bus. The result show the proposed architecture can reduce the system integration and verification time and the proposed architecture are actually use in three-dimensional graphics (3D Graphics) processor application.

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Thesis (M. Sc.)--University of Hong Kong, 2002. / Includes bibliographical references (leaves 50-51).

Hong Kong has an extensive network of public bus services covering almost all areas of Hong Kong Island, Kowloon, New Territories and Lantau Island. It is doubtless that the long history and reliable public bus service for the general masses has helped make Hong Kong achieving a world-class efficient and comprehensive public transport network. The operation of bus services can be traced back to the 1920's when, in 1921, the Vehicles and Traffic Regulation Ordinance set out the fares, stopping points and bus specifications for four bus routes serving Kowloon Peninsula. The first franchises were awarded in 1933 to China Motor Bus Company Ltd and Kowloon Motor Bus Company (1933) Limited (KMB). The third franchised bus company was New Lantao Bus Company (1973) Ltd which has operated franchised services on Lantau Island since 1979. In 1991 Citybus Limited, which since 1979 had operated a shuttle service for United Services Dockyard workers with a single bus and, later, some residential services, was granted a franchise for operating one Hong Kong Island bus route and further routes from 1993 and 1995. In 1998 CMB's history of operating bus services came to an end when New World First Bus Services Limited (NWFB) won the tender to operate 88 routes previously operated under CMB's franchise. However, with diverse and primarily private nature of bus operators, and the lack of motivation and hence regulations of any sort of the then colonial government and current SAR Government in mandating the documentation of bus-related relics and archive, there is no policy, mechanism or institution of any sort to provide records of history of this important form of public transit service in Hong Kong. Streets are the foreground of our buildings and the backdrop to everyday lives and contain valuable cultural symbols. The number of signs, bollards and guardrails are increasing over the years, without intended coordination. This result in streetscape which is unsigtly and seemingly lacking character. The example of England in rediscovering and preserving the street character is noteworthy. Since England has launched campaign of “Save Our Streets”, every sign has been concerned in towns or villages, such as traditional traffic direction signs, or “fingerposts”, which are a cherished feature of the English countryside and suburbs. English Heritage has joined forces with the Department for Transport to call on local authorities to retain, repair and reintroduce fingerposts where appropriate. Back to Hong Kong, as time passed, some of the bus service companies which have witnessed the historic development of this important service have either closed down or changed their business direction. All of the historic information has been lost other than their financial report. Antique bus stop or signs were nowhere to be found. Those information may only gather from some of the bus fans’ collection. To remedy such anomaly and loss of historic information, a designated library or museum should gather the history of bus services information at the past with easy public access. And instead of relying on the will and interest of individual companies, the government should at lead take the lead in coordinating such work. / published_or_final_version / Conservation / Master / Master of Science in Conservation