For people bound to a wheelchair, the ability to elevate one's legs is as much a comfort concern as it is a health concern. The elevation of one's legs changes the user's sitting position, thereby increasing their comfort level while at the same time increasing circulation, ultimately aiding in the prevention of pressure sores and lower extremity swelling. Unfortunately, the motion of current legrests on manual wheelchairs does not accurately match the motion of the user's lower leg. This mismatch of motion causes the legrest to push up on the leg, shortening it while applying torque to the hip. An elevating/articulating wheelchair legrest that consisted of a planar sixbar linkage coupled with a worm gear set was designed and manufactured to address the shortcomings of standard elevating legrests. The legrest prototype elevates and articulates simultaneously from a single user interface, allowing the user's leg to be straight in the elevated position. The prototype design was evaluated by a potential user, his nurse, and the Director of Rehabilitation Engineering at the Massachusetts Hospital School. The collective response from this evaluation was very favorable. The design was successful in meeting the design specifications. Further modifications are needed before the design is ready for the commercial market.

Typescript (photocopy). / Digitized by Kansas Correctional Industries

Thesis. 1976. M.S.--Massachusetts Institute of Technology. Dept. of Ocean Engineering. / Microfiche copy available in Archives and Engineering. / Includes bibliographical references. / M.S.

Sun Winston. / "December 1999." / Thesis (Ph.D.)--Chinese University of Hong Kong, 1999. / Includes bibliographical references (p. 149-159). / Electronic reproduction. Hong Kong : Chinese University of Hong Kong, [2012] System requirements: Adobe Acrobat Reader. Available via World Wide Web. / Mode of access: World Wide Web. / Abstracts in English and Chinese.

Wong Chi Kan, Kenneth. / "Architecture Department, Chinese University of Hong Kong, Master of Architecture Programme 2010-2011, design report." / Includes bibliographical references. / In English with some text in Chinese. / Research / Chapter 00 --- Research Structure / Chapter 01 --- Urbanism in Asia / Urban phenonmenon in the past two centuries / Unique Urban phenonmenon in Asia / New Era of Urban Planning in Asia / Chapter 02 --- Urban Waterway Studies / Evolution of role of urban river / Composition of general urban river / Spatial conception of river / Urban waterway in Western Cities / General Embankment Edge condition / General Node condition / Urban Waterway River In Asian Cities / Chapter I. --- "Suzhou Creek, Shanghai 上海蘇州河" / Chapter II. --- "Cheonggyecheon, Seoul 首爾清溪川" / Chapter III. --- "Malacca River, Malacca 馬六甲河" / Background / Programmatic Zoning Analysis / Riverfront interface analysis / Human activities in river precinct / Interview with local professionals and citizens / Commentary / Chapter 03 --- Sharing / Chapter 04 --- Acknowledgement / Chapter 05 --- Special Studies / Special Study / Chapter 00 --- Constructed Wetland / Role of constructed wetland / Composition of constructed wetland / Constructed wetland construction / Chapter 01 --- Urban Sewage Treatment / Conventional sewage treatment flowchart / Biological sewage treatment flowchart / Design / Chapter 00 --- Site Analysis / Location / Layers of infrastructures / Transportation network / Greenery precinct / Water precinct / Cultural precinct / Chapter 01 --- Design Concept (Urban Scale) / Macro urban biotope - Kai Tak River / Sewage treatment flowchart proposal / Green network and riverfront rehabiltation / Chapter 02 --- Design Concept (Architecture Scale) / Micro urban biotope - Eco-cultural hub / Lanscape Layout / Conceptual diagram / Floor plans / Unfolder sectoinal drawings / Sustainble architectural feature / parametric facade design / biological tube structure / Spatial quality / Chapter 03 --- Reference

by Leung Tin Chi. / Thesis (M.Phil.)--Chinese University of Hong Kong, 2003. / Includes bibliographical references (leaves 106-108). / Abstracts in English and Chinese. / Abstract / Acknowledgements / Table of Contents / Chapter Chapter 1 --- Introduction --- p.1 / Chapter 1.1 --- Balun Structures --- p.2 / Chapter 1.2 --- Balun Parameters --- p.4 / Chapter 1.3 --- LTCC Multi-layer Balun --- p.5 / Chapter 1.4 --- Original Contributions of The Thesis --- p.7 / Chapter Chapter 2 --- Background --- p.8 / Chapter 2.1 --- Lumped Elements Baluns --- p.8 / Chapter 2.1.1 --- λ/4 Transmission Line Equivalent Circuit Model --- p.10 / Chapter 2.1.2 --- 3λ/4 Transmission Line Equivalent Circuit Model --- p.14 / Chapter 2.1.3 --- Design Procedure of Lumped Element Balun --- p.18 / Chapter 2.2 --- Distributed Baluns --- p.29 / Chapter 2.2.1 --- Coupled Line --- p.29 / Chapter 2.2.2 --- Marchand Balun --- p.34 / Chapter 2.2.3 --- Stepped Impedance Balun --- p.38 / Chapter 2.2.4 --- New Structure Coupled-Line Balun --- p.53 / Chapter 2.3 --- Planar Balun --- p.63 / Chapter 2.4 --- Advantage and Disadvantage of Existed Balun Design --- p.69 / Chapter Chapter 3 --- Size Reduction Method of Coupled Lines --- p.71 / Chapter 3.1 --- New Proposed Method of Coupled Line Size Reduction --- p.71 / Chapter 3.2 --- Simulation Result of Capacitor Loaded Coupled Line --- p.77 / Chapter Chapter 4 --- Capacitor Loaded Coupled Line Balun --- p.82 / Chapter 4.1 --- Simulation Result of Capacitor Loaded Coupled-Line Balun --- p.82 / Chapter Chapter 5 --- Design of New Coupled Line Balun Using Capacitor Loaded Coupled Lines --- p.88 / Chapter 5.1 --- Design Specifications of Reduced Coupled-Line Balun --- p.89 / Chapter 5.2 --- Design of Capacitors --- p.90 / Chapter 5.3 --- Layout and Simulation Result of 2.4GHZ LTCC Capacitor Loaded Coupled-Line Balun --- p.96 / Chapter Chapter 6 --- Conclusion and Future Work --- p.104 / References --- p.106 / Author's Publication --- p.109 / Appendix A Marchand Balun --- p.110 / Appendix B Reconstruction of S-Matrix for a 3-Port Measurement at Only Two-Ports --- p.117 / Appendix C Renormalization of Balun S-Matrix with Load Termination Z1 from S-Matrix with Load Termination Z0 --- p.120 / Appendix D Sensitivity analysis for capacitor loaded coupled line balun --- p.122

Thesis (M.Arch.)--Massachusetts Institute of Technology, Dept. of Architecture, 1980. / MICROFICHE COPY AVAILABLE IN ARCHIVES AND ROTCH. / Bibliography: p. 163-165. / Although social conflicts in corridor housing have long been acknowledged, few useful alternatives have been developed. The corridor remains a standard of apartment design. As a catalyst to the development of new alternatives, this thesis examines the corridor in detail, and determines some basic principles for the design of more socially coherent access space in apartment housing. The first section of the thesis isolates twelve major problems of corridor living. It then discusses their effect on the social and spatial qualities of the apartment environment. And in response to these problems, it derives principles for the redesign of this environment through an examination of other forms of housing in which access from the street to the front door is more direct and more coherent. In the second section, these principles are applied to the analysis and redesign of one of the few existing alternatives to the internal corridor in apartment housing: the outside access gallery. In this analysis, a group of the more important gallery access projects is examined to determine how well they each fulfill the twelve principles isolated in the first section. Where these principles remain unfulfilled, alternatives are proposed and illustrated. Together, these principles sketch out a larger design project which attempts to fulfill all of the proposed principles. / by John D.T. Graham. / M.Arch.

Meng, Meng. / Thesis (M.Phil.)--Chinese University of Hong Kong, 2009. / Includes bibliographical references (p. [100]-102). / Abstract also in Chinese. / List of tables --- p.iii / List of figures --- p.iv / Introduction --- p.1 / Chapter 1.1 --- Overview of Microwave filters --- p.1 / Chapter 1.2 --- tuning of Microwave filters --- p.3 / Chapter 1.3 --- Rationalization of measured data --- p.6 / Chapter 1.4 --- Contributions of this thesis --- p.8 / Chapter 1.5 --- Organization of this thesis --- p.10 / Coupling matrix extraction methods --- p.11 / Chapter 2.1 --- Basics for coupling matrix synthesis --- p.11 / Chapter 2.2 --- Lossless coupling matrix extraction --- p.14 / Chapter 2.3 --- Lossy coupling matrix extraction --- p.17 / Chapter 2.3.1 --- Effects of dissipation factor --- p.18 / Chapter 2.3.2 --- Determination of dissipation factor --- p.21 / Approximation method single pole --- p.21 / Adjustment method by complex Y parameters --- p.22 / Chapter 2.3.3 --- Coupling matrix synthesis method with loss --- p.25 / Chapter 2.3.4 --- Relations between residues --- p.28 / Chapter 2.4 --- Case of degenerated poles --- p.29 / Chapter 2.4.1 --- The determination of poles --- p.30 / Y parameters interpolation method --- p.30 / Interpolation of denominator of Y parameter --- p.32 / Vector fitting method --- p.34 / Chapter 2.4.2 --- The determination of residues --- p.35 / Data rationalization --- p.39 / Chapter 3.1 --- Quasi-SB-AFS interpolation --- p.40 / Chapter 3.2 --- Removal of phase loading --- p.40 / Asymptote of phase using S parameters --- p.43 / Asymptote of phase using low-pass circuit model --- p.45 / Method of phase loading removal --- p.47 / Chapter 3.3 --- De-embedding of the reference plane --- p.49 / Examples of coupling matrix extraction --- p.57 / A 4th degree DR filter --- p.57 / A 6th degree waveguide filter --- p.62 / An 8th degree waveguide filter --- p.63 / A 10th degree waveguide filter --- p.66 / Filter tuning utilizing coupling matrix extraction --- p.69 / Chapter 5.1 --- Filter tuning strategies --- p.69 / Chapter 5.2 --- Filter tuning examples --- p.71 / Conclusions and discussions --- p.81 / APPENDIX A: Time domain tuning --- p.83 / APPENDIX B: ACME User´ةs Manual --- p.87 / Chapter B.1 --- ACME basics --- p.87 / Chapter B.2 --- Installations --- p.89 / Chapter B.3 --- Getting started --- p.90 / Chapter B.4 --- A hello world example --- p.97 / bibliography --- p.100

Wong Ching Yee Danise. / "Architecture Department, Chinese University of Hong Kong, Master of Architecture Programme 2007-2008, design report." / Includes bibliographical references (leaves 33). / Chapter 1. --- Background / Chapter 1.1 --- Lack of general aviation facilities / Chapter 1.2 --- Site selection limitations / Chapter 1.3 --- Runway's fundamental / Chapter 2. --- Observation / Chapter 2.1 --- Infrastructure in Hong Kong / Chapter 2.2 --- "Transforming Civil Structure to ""Place""" / Chapter 3. --- Research Part I: Wisdom from the Aircraft / Chapter 3.1 --- Monoplane to biplane / Chapter 3.2 --- "S, M, L" / Chapter 3.3 --- Multi - layered space / Chapter 3.4 --- Composition in manufacture process / Chapter 4. --- Research Part II: Site Selection Criteria and Result / Chapter 4.1 --- Prevailing wind / Chapter 4.2 --- Critical aeroplane / Chapter 4.3 --- Airspace / Chapter 4.4 --- Accessibility / Chapter 4.5 --- Possible Sites / Chapter 4.6 --- Stonecutter's Island / Chapter 5. --- Research Part III: Precedence Study / Chapter 5.1 --- Typical General Aviation Facilities Study / Chapter 5.2 --- A Study of Aircraft Carrier / Chapter 5.3 --- Similar example / Chapter 6. --- Deduction: Issues and Direction / Chapter 7. --- Architectural Proposal: Flight Training Centre / Chapter 8. --- Other Research / Chapter 9. --- Bibliography

Chung, Wai Fung. / Thesis (M.Phil.)--Chinese University of Hong Kong, 2007. / Includes bibliographical references (leaves 98-100). / Abstracts in English and Chinese. / 摘要 --- p.III / ACKNOWLEDGEMENT --- p.IV / CONTENTS --- p.V / LIST OF FIGURES --- p.VIII / LIST OF TABLES --- p.X / LIST OF TABLES --- p.X / Chapter CHAPTER 1 --- INTRODUCTION --- p.1 / Chapter 1.1 --- Motivation --- p.1 / Chapter 1.2 --- Receiver Architecture --- p.3 / Chapter 1.2.1 --- Zero-IF Receivers --- p.4 / Chapter 1.2.2 --- Low-IF Receivers --- p.6 / Chapter 1.2.2.1 --- Hartley Architecture --- p.7 / Chapter 1.2.2.2 --- Weaver Architecture --- p.9 / Chapter 1.3 --- Image-rejection ratio --- p.10 / Chapter 1.4 --- Thesis Organization --- p.12 / Chapter CHAPTER 2 --- FUNDAMENTALS OF OSCILLATOR --- p.13 / Chapter 2.1 --- Basic Oscillator Theory --- p.13 / Chapter 2.2 --- Varactor --- p.15 / Chapter 2.3 --- Inductor --- p.17 / Chapter 2.4 --- Phase noise --- p.22 / Chapter 2.4.1 --- The Leeson ´ةs phase noise expression --- p.24 / Chapter 2.4.2 --- Linear model --- p.25 / Chapter 2.4.3 --- Linear Time-Variant phase noise model --- p.28 / Chapter CHAPTER 3 --- FULLY-INTEGRATED CMOS OSCILLATOR DESIGN --- p.31 / Chapter 3.1 --- Ring oscillator --- p.31 / Chapter 3.2 --- LC oscillator --- p.33 / Chapter 3.2.1 --- LC-tank resonator --- p.34 / Chapter 3.2.2 --- Negative transconductance --- p.36 / Chapter 3.3 --- Generation of quadrature phase signals --- p.39 / Chapter 3.4 --- Quadrature VCO topologies --- p.41 / Chapter 3.4.1 --- Parallel-coupled QVCO --- p.41 / Chapter 3.4.2 --- Series-coupled QVCO --- p.46 / Chapter 3.4.3 --- QVCO with Back-gate Coupling --- p.47 / Chapter 3.4.4 --- QVCO using superharmonic coupling --- p.49 / Chapter 3.5 --- Novel QVCO using back-gate superharmonic coupling --- p.52 / Chapter 3.5.1 --- Tuning range --- p.54 / Chapter 3.5.2 --- Negative gm --- p.55 / Chapter 3.5.3 --- Phase noise calculation --- p.56 / Chapter 3.5.4 --- Coupling coefficient --- p.57 / Chapter 3.5.5 --- Low-voltage and low-power design --- p.59 / Chapter 3.5.6 --- Layout Consideration --- p.61 / Chapter 3.5.6.1 --- Symmetrical Layout and parasitics --- p.61 / Chapter 3.5.6.2 --- Metal width and number of vias --- p.63 / Chapter 3.5.6.3 --- Substrate contact and guard ring --- p.63 / Chapter 3.5.7 --- Simulation Results --- p.65 / Chapter 3.5.7.1 --- Frequency and output power --- p.65 / Chapter 3.5.7.2 --- Quadrature signal generation --- p.67 / Chapter 3.5.7.3 --- Tuning range --- p.67 / Chapter 3.5.7.4 --- Power consumption --- p.68 / Chapter 3.5.7.5 --- Phase noise --- p.69 / Chapter 3.6 --- Polyphase filter and Single-sideband mixer design --- p.70 / Chapter 3.6.1 --- Polyphase filter --- p.72 / Chapter 3.6.2 --- Layout Consideration --- p.74 / Chapter 3.6.3 --- Simulation results --- p.76 / Chapter 3.7 --- Comparison with parallel-coupled QVCO --- p.78 / Chapter CHAPTER 4 --- EXPERIMENTAL RESULTS --- p.80 / Chapter 4.1 --- Test Fixture --- p.82 / Chapter 4.2 --- Measurement set-up --- p.84 / Chapter 4.3 --- Measurement results --- p.86 / Chapter 4.3.1 --- Proposed QVCO using back-gate superharmonic coupling --- p.86 / Chapter 4.3.1.1 --- Output Spectrum --- p.86 / Chapter 4.3.1.2 --- Tuning range --- p.87 / Chapter 4.3.1.3 --- Phase noise --- p.88 / Chapter 4.3.1.4 --- Power consumption --- p.88 / Chapter 4.3.1.5 --- Image-rejection ratio --- p.89 / Chapter 4.3.2 --- Parallel-coupled QVCO --- p.90 / Chapter 4.3.2.1 --- Output spectrum --- p.90 / Chapter 4.3.2.2 --- Power consumption --- p.90 / Chapter 4.3.2.3 --- Tuning range --- p.91 / Chapter 4.3.2.4 --- Phase noise --- p.92 / Chapter 4.3.3 --- Comparison between proposed and parallel-coupled QVCO --- p.93 / Chapter CHAPTER 5 --- CONCLUSIONS --- p.95 / Chapter 5.1 --- Conclusions --- p.95 / Chapter 5.2 --- Future work --- p.97 / REFERENCES --- p.98