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Thesis (M.Arch.)--University of Hong Kong, 2000. / Includes special report study entitled : A study on building technologies for an agricultural skyscraper. Includes bibliographical references. Also available in print.

Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Architecture, 1982. / MICROFICHE COPY AVAILABLE IN ARCHIVES AND ROTCH. / Includes bibliographies. / by Gail Fenske. / M.S.

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All experience combines the esthetic, visual experience with other 1evels of experience -- from the pbilosophical 1evel to the practical leve1 of how to find one's way around. Thus, I have considered a broad range of information relating to the clustering of skyscrapers. [...]

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Wireless Local Area Networks (WLANs) extend the usage of wired LANs from specific places within a building to the many mobile users whether in the building or outside. The wireless data is not only used by authorized users but also might be intercepted and altered by other unauthorized users. Therefore, the power of the transmitter is kept as low as possible to make it difficult for the others to intercept the signal. In the absence of interception, adversaries might attempt to jam the signal so that the network cannot operate properly. The purpose of present study is to investigate the effects of noise jamming against a WLAN in a high-rise building. The building model was created by Rhino, a well known Windows-based computer drawing software. The jamming effects are simulated using Urbana. The LAN transmitter operates with an omni-directional antenna and 100 mW of power. The noise jammer has variable power levels of 10 W and 100 W. It uses a directional antenna. The signal-to jam-ratio (SJR) is computed for several floors in the building to determine if the jammer will disrupt the WLAN.

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The Millennium Tower in San Francisco, which was the tallest building in western United States, recorded excessive settlements shortly after construction. There were two possible reasons for the abnormal behavior, inadequate foundation design to support excessively heavy building load, and changes in subsurface conditions due to dewatering at the nearby construction site. This research aims to identify the most reasonable causes of the settlement of Millennium Tower. In this study, a centrifuge model was constructed to simulate the settlement of Millennium Tower and to predict the settlement trend in the future. A loading device using airbag was used to apply incremental load in-flight. Dewatering was also simulated during consolidation. The centrifuge modeling was performed based on the field subsurface data obtained from geotechnical reports. Ground materials were prepared by mixing different kinds of soil, and the foundation system was modeled in detail based on the information of foundation design. The model was tested under a centrifugal acceleration of 120-g. An airbag loading system was used to simulate the multi-stage construction sequence. After simulating the construction sequence, long-term consolidation settlement over a period of 20 years was conducted. The groundwater level was lowered to study the change in settlement caused by dewatering at the nearby construction site. Eight laser transducers measured the settlements of building and each ground layer, and the pore water pressure transducers measured the pore water pressure in the clay layers at four different depths. The average settlement obtained from the centrifuge model test showed good agreement with the field measurements. The centrifuge model testing showed that the temporary change in groundwater level did not affect the long-term settlement.