Chan Ka Cheong. / Thesis (M.Phil.)--Chinese University of Hong Kong, 2004. / Includes bibliographical references (leaves 77-85). / Abstracts in English and Chinese. / Chapter 1. --- Introduction --- p.1 / Chapter 1.1 --- Introduction to Fingerprint Verification --- p.1 / Chapter 1.1.1 --- Biometrics --- p.1 / Chapter 1.1.2 --- Fingerprint History --- p.2 / Chapter 1.1.3 --- Fingerprint characteristics --- p.4 / Chapter 1.1.4 --- A Generic Fingerprint Matching System Architecture --- p.6 / Chapter 1.1.5 --- Fingerprint Verification and Identification --- p.8 / Chapter 1.1.7 --- Biometric metrics --- p.10 / Chapter 1.2 --- Embedded system --- p.12 / Chapter 1.2.1 --- Introduction to embedded systems --- p.12 / Chapter 1.2.2 --- Embedded systems characteristics --- p.12 / Chapter 1.2.3 --- Performance evaluation of a StrongARM processor --- p.13 / Chapter 1.3 --- Objective -An embedded fingerprint verification system --- p.16 / Chapter 1.4 --- Organization of the Thesis --- p.17 / Chapter 2 --- Literature Reviews --- p.18 / Chapter 2.1 --- Fingerprint matching overviews --- p.18 / Chapter 2.1.1 --- Minutiae-based fingerprint matching --- p.20 / Chapter 2.2 --- Fingerprint image enhancement --- p.21 / Chapter 2.3 --- Orientation field Computation --- p.22 / Chapter 2.4 --- Fingerprint Segmentation --- p.24 / Chapter 2.5 --- Singularity Detection --- p.25 / Chapter 2.6 --- Fingerprint Classification --- p.27 / Chapter 2.7 --- Minutia extraction --- p.30 / Chapter 2.7.1 --- Binarization and thinning --- p.30 / Chapter 2.7.2 --- Direct gray scale approach --- p.32 / Chapter 2.7.3 --- Comparison of the minutiae extraction approaches --- p.35 / Chapter 2.8 --- Minutiae matching --- p.37 / Chapter 2.8.1 --- Point matching --- p.37 / Chapter 2.8.2 --- Structural matching technique --- p.38 / Chapter 2.9 --- Summary --- p.40 / Chapter 3. --- Implementation --- p.41 / Chapter 3.1 --- Fast Fingerprint Matching System Overview --- p.41 / Chapter 3.1.1 --- Typical Fingerprint Matching System --- p.41 / Chapter 3.1.2. --- Fast Fingerprint Matching System Overview --- p.41 / Chapter 3.2 --- Orientation computation --- p.43 / Chapter 3.21 --- Orientation computation --- p.43 / Chapter 3.22 --- Smooth orientation field --- p.43 / Chapter 3.3 --- Fingerprint image segmentation --- p.45 / Chapter 3.4 --- Reference Point Extraction --- p.46 / Chapter 3.5 --- A Classification Scheme --- p.51 / Chapter 3.6 --- Finding A Small Fingerprint Matching Area --- p.54 / Chapter 3.7 --- Fingerprint Matching --- p.57 / Chapter 3.8 --- Minutiae extraction --- p.59 / Chapter 3.8.1 --- Ridge tracing --- p.59 / Chapter 3.8.2 --- cross sectioning --- p.60 / Chapter 3.8.3 --- local maximum determination --- p.61 / Chapter 3.8.4 --- Ridge tracing marking --- p.62 / Chapter 3.8.5 --- Ridge tracing stop criteria --- p.63 / Chapter 3.9 --- Optimization technique --- p.65 / Chapter 3.10 --- Summary --- p.66 / Chapter 4. --- Experimental results --- p.67 / Chapter 4.1 --- Experimental setup --- p.67 / Chapter 4.2 --- Fingerprint database --- p.67 / Chapter 4.3 --- Reference point accuracy --- p.67 / Chapter 4.4 --- Variable number of matching minutiae results --- p.68 / Chapter 4.5 --- Contribution of the verification prototype --- p.72 / Chapter 5. --- Conclusion and Future Research --- p.74 / Chapter 5.1 --- Conclusion --- p.74 / Chapter 5.2 --- Future Research --- p.74 / Bibliography --- p.77

A real-time dynamic feedback control system is developed. An improved PID algorithm, called the integral separated piecewise PID scheme, is used in the control system. This algorithm is able to limit the contribution of the integral component in the PID calculation to avoid integral windup. In addition, it could use different PID parameters to adapt to different segments within one punch motion cycle. Hence, the error of the punch motion, either resulting from the machine assembly or from the machine dynamics, can be compensated by tuning the velocity of the servomotor. This is a unique feature of the new press that ensures its accuracy. / Based on the novel structure, the detailed design is then carried out, which includes the mechanical design, kinematics and inverse kinematics analysis, static force analysis, parametric design and the other related designs. A calibration method based on the experiment and computer simulation is proposed for the new press, which is also useful for the parallel mechanisms. Cooperated with Guangdong Metal Forming Machine Works Co. Ltd., a 250 KN prototype has been built and tested. / In order to ensure the desirable performance, dynamic control is necessary. The thesis uses two dynamic modeling methods to study the dynamics of the press. One is the kineto-static method. It is also called D'Alembert principle which rearranges Newton's second law and transfers a dynamic problem to an equivalent static problem by adding the inertial forces and inertial torques onto the system. The model can then be analyzed easily and exactly as a static system subjected to the inertial forces and torques and the external forces. The other method is the Lagrangian method which derives the dynamic model from the energy perspective. Based on the model, the dynamics of the press is studied by means of computer simulation and is validated experimentally. / In this thesis, a controllable hybrid mechanical metal forming press is developed, which is driven by a CSM with a flywheel and a servomotor. From a mechanism point of view, it is a closed-loop 2-DOF parallel planar five-bar mechanism with four resolute joints and one prismatic joint. Thanks to the usage of the servomotor, the punch motion of the new press can be controlled by tuning the velocity of the servomotor. Accordingly, desired punch motions for different stamping processes can be obtained. In other words, the new press is flexible and controllable like the servo mechanical press and the hydraulic press. Moreover, the CSM with flywheel provides the main power during the stamping operation, and hence, it is energy efficient. In addition, it is not expensive to build, as it uses only a small servomotor. / Metal forming is one of the oldest production processes and yet, is still one of the most commonly used processes today. Everyday, millions of parts are produced by metal forming ranging from battery caps to automobile body panels. Therefore, even a small improvement may add to significant corporative gain. / The thesis also describes the trajectory planning method for the press, which is based on the combination of the inverse kinematics and cubic spline interpolation. The trajectory is optimized under multiple constraints on velocity, acceleration and jerk of the servomotor. It guarantees the new press is controllable and energy efficient. / Two typical stamping processes, drawing and forging, are taken as examples for the operations of the new press. The results of the simulation and the experiment match well. Based on the simulation and experiments, it is found that the CSM provides the main power for the metal forming operations, while the servomotor is mainly responsible for overcoming the inertia forces to realize the desired punch motion. The experiments show that the new press is energy efficient, fast, controllable and inexpensive to build. It combines the advantages of both mechanical press and hydraulic press and has a good performance. It is expected the new press will have a great potential for the metal forming industry. (Abstract shortened by UMI.) / He, Kai. / "February 2008." / Adviser: Ruxu Du. / Source: Dissertation Abstracts International, Volume: 70-03, Section: B, page: 1902. / Thesis (Ph.D.)--Chinese University of Hong Kong, 2008. / Includes bibliographical references (p. 147-149). / Electronic reproduction. Hong Kong : Chinese University of Hong Kong, [2012] System requirements: Adobe Acrobat Reader. Available via World Wide Web. / Electronic reproduction. [Ann Arbor, MI] : ProQuest Information and Learning, [200-] System requirements: Adobe Acrobat Reader. Available via World Wide Web. / Abstracts in English and Chinese. / School code: 1307.

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Lau, Chi Shing = 一個應用於航空的高分辨率、快速更新的氣象數據分析系統 / 柳巳丞. / Thesis (M.Phil.)--Chinese University of Hong Kong, 2008. / Includes bibliographical references (leaves 76-78). / Abstracts in English and Chinese. / Lau, Chi Shing = Yi ge ying yong yu hang kong de gao fen bian lu, kuai su geng xin de qi xiang shu ju fen xi xi tong / Liu Sicheng. / Abstract --- p.i / Acknowledgement --- p.iii / Chapter 1 --- Introduction --- p.1 / Chapter 1.1 --- Overview --- p.1 / Chapter 1.2 --- Review on Windshear --- p.2 / Chapter 2 --- Review of the Weather Radar System --- p.5 / Chapter 2.1 --- Introduction --- p.5 / Chapter 2.2 --- Reflectivity Measurement --- p.8 / Chapter 2.3 --- Velocity Measurement --- p.11 / Chapter 2.4 --- The Doppler Dilemma --- p.14 / Chapter 2.5 --- TDWR and LIDAR used in Hong Kong --- p.16 / Chapter 3 --- Design of the System --- p.19 / Chapter 3.1 --- The Wind Analysis --- p.19 / Chapter 3.2 --- The Cloud Analysis --- p.25 / Chapter 3.3 --- Settings of the Domain --- p.26 / Chapter 4 --- Data Preparation --- p.31 / Chapter 4.1 --- Background Field --- p.31 / Chapter 4.2 --- Non-radar Observation Data --- p.33 / Chapter 4.3 --- The Radar Data --- p.33 / Chapter 5 --- A Study on Sea Breeze --- p.37 / Chapter 5.1 --- The Physical origin of Sea Breeze --- p.37 / Chapter 5.2 --- Case Study on 10 March 2006 --- p.41 / Chapter 6 --- A Study on Tropical Cyclone --- p.46 / Chapter 6.1 --- The Physics of Tropical Cyclone --- p.46 / Chapter 6.2 --- Case Study on 3 Aug 2006 --- p.51 / Chapter 7 --- A Study on Microburst --- p.57 / Chapter 7.1 --- The Physical origin of Microburst --- p.57 / Chapter 7.2 --- Case Study on 8 June 2007 --- p.60 / Chapter 8 --- Discussions and Conclusions --- p.67 / Chapter 8.1 --- Discussions --- p.67 / Chapter 8.2 --- Conclusions --- p.69 / Chapter A --- Derivation of Radar Equation --- p.70 / Chapter A.1 --- Radar Equation for Point Target --- p.70 / Chapter A.2 --- Radar Equation for Distributed Targets --- p.71 / Chapter B --- Technical Details --- p.73 / Chapter B.1 --- Hardware and Timing --- p.73 / Chapter B.2 --- Programming issues --- p.75 / Bibliography --- p.76

Lo, Ka Kan. / Thesis (M.Phil.)--Chinese University of Hong Kong, 2007. / Includes bibliographical references (leaves 97-104). / Abstracts in English and Chinese. / Chapter 1 --- Introduction --- p.1 / Chapter 1.1 --- Motivation --- p.3 / Chapter 1.2 --- New paradigm in language learning --- p.5 / Chapter 1.3 --- Semantic Relations --- p.7 / Chapter 1.4 --- Contribution of this thesis --- p.9 / Chapter 2 --- Related Work --- p.13 / Chapter 2.1 --- Theoretical Linguistics --- p.13 / Chapter 2.1.1 --- Overview --- p.13 / Chapter 2.1.2 --- Analysis --- p.15 / Chapter 2.2 --- Computational Linguistics - General Learning --- p.17 / Chapter 2.3 --- Computational Linguistics - HPSG Lexical Acquisition --- p.20 / Chapter 2.4 --- Learning approach --- p.22 / Chapter 3 --- Background --- p.25 / Chapter 3.1 --- Modeling primitives --- p.26 / Chapter 3.1.1 --- Feature Structure --- p.26 / Chapter 3.1.2 --- Word --- p.28 / Chapter 3.1.3 --- Phrase --- p.35 / Chapter 3.1.4 --- Clause --- p.36 / Chapter 3.2 --- Wikipedia Resource --- p.38 / Chapter 3.2.1 --- Encyclopedia Text --- p.40 / Chapter 3.3 --- Semantic Relations --- p.40 / Chapter 4 --- Learning Framework - Syntactic and Semantic --- p.46 / Chapter 4.1 --- Type feature scoring function --- p.48 / Chapter 4.2 --- Confidence score of lexical entry --- p.50 / Chapter 4.3 --- Specialization and Generalization --- p.52 / Chapter 4.3.1 --- Further Processing --- p.54 / Chapter 4.3.2 --- Algorithm Outline --- p.54 / Chapter 4.3.3 --- Algorithm Analysis --- p.55 / Chapter 4.4 --- Semantic Information --- p.57 / Chapter 4.4.1 --- Extraction --- p.58 / Chapter 4.4.2 --- Induction --- p.60 / Chapter 4.4.3 --- Generalization --- p.63 / Chapter 4.5 --- Extension with new text documents --- p.65 / Chapter 4.6 --- Integrating the syntactic and semantic acquisition framework --- p.65 / Chapter 5 --- Evaluation --- p.68 / Chapter 5.1 --- Evaluation Metric - English Resource Grammar --- p.68 / Chapter 5.1.1 --- English Resource Grammar --- p.69 / Chapter 5.2 --- Experiments --- p.71 / Chapter 5.2.1 --- Tasks --- p.71 / Chapter 5.2.2 --- Evaluation Measures --- p.77 / Chapter 5.2.3 --- Methodologies --- p.78 / Chapter 5.2.4 --- Corpus Preparation --- p.79 / Chapter 5.2.5 --- Results --- p.81 / Chapter 5.3 --- Result Analysis --- p.85 / Chapter 6 --- Conclusions --- p.95 / Bibliography --- p.97

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At the beginning of this century many sequencing projects were finalised. As a result, overwhelming amount of literature and sequence data have been available to biologist via online bioinformatics databases. This biological data lead to better understanding of many organisms and have helped identify genes. However, there is still much to learn about the functions and interactions of genes. This thesis is concerned with predicting gene interactions using two main online resources: biomedical literature and sequence data. The biomedical literature is used to explore and refine a text mining method, known as the "co-occurrence method", which is used to predict gene interactions. The sequence data are used in an analysis to predict an upper bound of the number of genes involved in gene interactions. The co-occurrence method of text mining was extensively explored in this thesis. The effects of certain computational parameters on influencing the relevancy of documents in which two genes co-occur were critically examined. The results showed that indeed some computational parameters do have an impact on the outcome of the co-occurrence method, and if taken into consideration, can lead to better identification of documents that describe gene interactions. To explore the co-occurrence method of text mining, a prototype system was developed, and as a result, it contains unique functions that are not present in currently available text mining systems. Sequence data were used to predict the upper bound of the number of genes involved in gene interactions within a tissue. A novel approach was undertaken that used an analysis of SAGE and EST sequence libraries using ecological estimation methods. The approach proves that the species accumulation theory used in ecology can be applied to tag libraries (SAGE or EST) to predict an upper bound to the number of mRNA transcript species in a tissue. The novel computational analysis provided in this study can be used to extend the body of knowledge and insights relating to gene interactions and, hence, provide better understanding of genes and their functions.

Thesis (M.S.)--Virginia Polytechnic Institute and State University, 1988. / Vita. Abstract. Includes bibliographical references (leaves 33-34). Also available via the Internet.

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