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Over the past decade, researches on operating systems have been shifted from monolithic kernels towards microkernels for several reasons. Of them are: (1) It is easier to understand and debug because the kernel is much smaller. (2) It is much more secure and flexible because the kernel is small, and most of the kernel functions can be implemented as servers running in the user space instead of in the kernel space. (3) The message passing technique that is in the core of the microkernel has been improved, and thus the overhead required for the message passing has been highly reduced. Minix 3 is one of the microkernels developed over the past decade and is aimed for educational purpose and small PCs. It is implemented on the IA-32 architecture and is based on the segmented memory model of IA-32. The purpose of this thesis is to use Minix 3 as a case study and to convert the segmented memory model adopted by the current implementation to coexisted with the demand paged memory model, which is also supported by the IA-32 architecture. That said, the thesis can be divided into two parts: The first part is to implement a new server called pager, which would take over the memory management subsystem of the Minix 3 microkernel and be used to offload the overhead of the kernel. The second part is to implement a virtual memory management subsystem that uses the segmentation with paging memory model of the IA-32 architecture.

by Chiu Kwok-Yee, Louie Hon-Kuen. / Thesis (M.B.A.)--Chinese University of Hong Kong, 1993. / Includes bibliographical references (leaves [97-98]). / ABSTRACT --- p.i / TABLE OF CONTENTS --- p.ii / LIST OF TABLES --- p.v / LIST OF FIGURES --- p.vii / ACKNOWLEDGMENTS --- p.viii / CHAPTER / Chapter 1. --- INTRODUCTION --- p.1 / Chapter 1.1 --- Reason for Study --- p.1 / Chapter 1.2 --- An Overview of the Local Market --- p.2 / Chapter 1.2.1 --- Market Size and Growth --- p.4 / Chapter 1.2.2 --- Market Competitors --- p.6 / Chapter 1.2.3 --- Strategies --- p.8 / Chapter 1.2.3.1 --- Low Price Strategy --- p.3 / Chapter 1.2.3.2 --- Service Differentiation Strategy --- p.9 / Chapter 1.2.3.3 --- Market Development Strategy --- p.11 / Chapter 1.3 --- Research Objectives --- p.13 / Chapter 1.3.1 --- Decision Problems --- p.13 / Chapter 1.3.2 --- Research Problems --- p.13 / Chapter 1.3.3 --- Research Objectives --- p.14 / Chapter 2. --- LITERATURE REVIEW --- p.15 / Chapter 2.1 --- Definition --- p.15 / Chapter 2.2 --- Segmentation Options --- p.15 / Chapter 2.3 --- Advantages of Market Segmentation --- p.17 / Chapter 2.4 --- Prerequisites for a Segmentation Scheme --- p.18 / Chapter 2.5 --- Segmentation Bases --- p.20 / Chapter 2.5.1 --- Geographic Segmentation --- p.20 / Chapter 2.5.2 --- Demographic Segmentation --- p.20 / Chapter 2.5.3 --- Psychographic Segmentation --- p.21 / Chapter 2.5.4 --- Behaviouristic Segmentation --- p.24 / Chapter 3. --- RESEARCH METHODOLOGY --- p.27 / Chapter 3.1 --- Research Design --- p.27 / Chapter 3.2 --- Sampling --- p.27 / Chapter 3.3 --- Data Collection --- p.28 / Chapter 4. --- LIMITATIONS --- p.30 / Chapter 5. --- IDENTIFICATION OF MARKET SEGMENTS FOR PSYCHOGRAPHIC AND BENEFIT SEGMENTATION --- p.32 / Chapter 5.1 --- Psychographic Segmentation --- p.32 / Chapter 5.1.1 --- Factor Analysis --- p.32 / Chapter 5.1.2 --- Cluster Analysis --- p.38 / Chapter 5.2 --- Benefit Segmentation --- p.41 / Chapter 5.2.1 --- Factor Analysis --- p.42 / Chapter 5.2.2 --- Cluster Analysis --- p.45 / Chapter 6. --- INTERPRETATION AND PROFILING OF MARKET SEGMENTS --- p.47 / Chapter 6.1 --- Demographic Segmentation Analysis --- p.47 / Chapter 6.2 --- Usage Segmentation Analysis --- p.52 / Chapter 6.2.1 --- Demographic Profile --- p.52 / Chapter 6.2.2 --- Psychographic Profile --- p.55 / Chapter 6.2.3 --- Media Preference and Product Usage Profile --- p.56 / Chapter 6.2.4 --- Benefit Profile --- p.56 / Chapter 6.2.5 --- Service-Needs Profile --- p.58 / Chapter 6.3 --- Psychographic Segmentation Analysis --- p.61 / Chapter 6.3.1 --- Interpretation of Segments --- p.61 / Chapter 6.3.2 --- Media Preference and Product Usage Profile --- p.69 / Chapter 6.3.3 --- Benefit Profile --- p.71 / Chapter 6.3.4 --- Service-Needs Profile --- p.72 / Chapter 6.4 --- Benefit Segmentation Analysis --- p.76 / Chapter 6.4.1 --- Interpretation of Segments --- p.76 / Chapter 6.4.2 --- Psychographic Profile --- p.81 / Chapter 6.4.3 --- Media Preference and Product Usage Profile --- p.82 / Chapter 6.4.4 --- Service-Needs Profile --- p.83 / Chapter 7. --- IMPLICATIONS FOR MARKETING STRATEGIES --- p.86 / Chapter 7.1 --- Discussion --- p.86 / Chapter 7.1.1 --- General Demographics of Pager Users --- p.86 / Chapter 7.1.2 --- Services Needed by Pager Users --- p.87 / Chapter 7.1.3 --- An Evaluation of the Four Segmentation Bases Usedin the Study --- p.88 / Chapter 7.1.4 --- Similar Segments Identified by Both Usage and Benefit Segmentation --- p.90 / Chapter 7.2 --- Implications for Marketing Strategy --- p.92 / Chapter 7.2.1 --- Target Market --- p.92 / Chapter 7.2.2 --- Product Strategy --- p.92 / Chapter 7.2.3 --- Price Strategy --- p.93 / Chapter 7.2.4 --- Promotional Strategy --- p.94 / Chapter 7.2.5 --- Distribution Strategy --- p.94 / Chapter 8. --- CONCLUSION --- p.95 / BIBLIOGRAPHY / APPENDICES / APPENDIX A Questionnaire (English Version) / APPENDIX B Questionnaire (Chinese Version) / APPENDIX C List of AIO Questions / APPENDIX D Varimax Rotated Component Analysis Factor Matrix / APPENDIX E Psychographic Profile of the Two Usage Segments / APPENDIX F Psychographic Profile of the Six Psychographic Segments / APPENDIX G Demographic Profile of the Six Psychographic Segments / APPENDIX H Demographic Profile of the Two Benefit Segments / APPENDIX I Psychographic Profile of the Two Benefit Segments

Yu Yat-Wah. / Thesis (M.B.A.)--Chinese University of Hong Kong, 1992. / Includes bibliographical references. / ABSTRACT --- p.ii / TABLE OF CONTENTS --- p.iii / LIST OF TABLES --- p.v / LIST OF FIGURES --- p.vi / ACKNOWLEDGEMENTS --- p.vii / CHAPTER / Chapter 1. --- INTRODUCTION --- p.1 / Chapter 2. --- MARKETING IMAGE STUDY FOR TELECOM PAGING LIMITED --- p.3 / Market Situation of the Paging Industry --- p.3 / Marketing Strategy --- p.6 / The Target Company - Telecom Paging Ltd --- p.11 / Research Objective --- p.12 / Chapter 3. --- LITERATURE REVIEW --- p.13 / Chapter 4. --- RESEARCH METHODOLOGY --- p.19 / Exploratory Study --- p.19 / Descriptive Research --- p.20 / Chapter 5. --- LIMITATIONS --- p.24 / Chapter 6. --- RESULTS --- p.26 / Demographic Characteristics of the Respondents --- p.26 / Media Through Which Respondents Became Aware of Telecom Paging and New World Paging --- p.29 / Top of Mind Paging Companies --- p.31 / Mean Score of Each Attribute --- p.32 / Mean Importance of Each Attribute --- p.35 / Chapter 7. --- IMAGE GAP ANALYSIS --- p.37 / Telecom's Image versus New World's Image --- p.40 / Actual Image versus Perceived Image --- p.44 / Chapter 8. --- RECOMMENDED MARKETING STRATEGY FOR TELECOM PAGING LIMITED --- p.49 / Chapter 9. --- CONCLUSION --- p.56 / BIBLIOGRAPHY --- p.58 / APPENDICES --- p.60

This thesis presents a framework for a platform that integrates various infrastructural services and facilities in an automated manner to improve and coordinate the processes of medical emergency response system (MERS). It aims to improve the quality of healthcare system infrastructure by improving the quality of service of MERS. Presently the processes of MERS and their coordination are semi-automated, which adds to the complication of service availability and information exchange among participating systems, thereby affecting the MERS' quality of service adversely. An integrated platform for the coordination of MERS processes can help improve its quality of service and ensure better control of data and process flow. The improvements to the MERS service quality can significantly contribute to the improvement of the quality of healthcare infrastructure. The integrated platform framework presented here resolves the problems of data flow and process coordination to achieve the desired goal. / by Nabarum Chakrabarty. / Thesis (M.S.C.S.)--Florida Atlantic University, 2010. / Includes bibliography. / Electronic reproduction. Boca Raton, Fla., 2010. Mode of access: World Wide Web.

This dissertation explores the history and culture of a mobile communication device and practice that has been superseded by today’s networked communication devices. The pager—known later in the 1980s and 1990s as a beeper—has a longer history than most assume. In the early 1950s the device was not a distinct technology in its own right, but a haphazard combination of existing communications technologies: telegraphy, telephony, radio broadcasting, answering services, and hearing aids. These technological origins, and the cultures that support them, are important for broadcast and telecommunications historians, as well as media history and theory in general, for three reasons. First, research on the pager fills a gap in telecommunications history that typically begins with Bell’s wired telephone and ends with wireless mobile car-phones and, later, cellular telephones. Second, the pager’s history contributes to the limited scholarship that has emphasized radio’s many directions after the major broadcast networks left radio for larger television audiences in the late 1940s and early 1950s. Being in-between telephone and radio technology has given the pager somewhat of an identity crisis for historians. Yet this is a silver lining for communication theorists to think about the connection between a medium’s physical form (e.g., a radio is a receiving device that can’t talk back) and its communication form (e.g., a pager was once known as a radio that you would use with the telephone to talk back). Lastly, the pager is not just a technological device, but the embodiment of a rarely discussed form of communication: paging. This project investigates the history of paging as a cultural technique and communication practice. While early pagers utilized both broadcast and telecommunications techniques, paging as a form of communication does not fall clearly within either of those categories. Like being paged over a public intercom system, early paging systems broadcast a message (from one to many) in order to grab the attention of a single individual (one out of many). This form of communication, this project argues, is fundamental for understanding the many contemporary discussions over the publicly-private and privately-public nature of today’s social media services.

In this paper, we propose the correlated concurrent search approach to simultaneously and efficiently locate the mobile stations in the communications networks. Previous work either focuses on locating a single mobile user or assumes that the locations of mobile users are statistically independent. We first propose a mobility model in which the movements of mobile stations are statistically correlated. Next, we propose a new approach to discover the correlations among the mobile stations without calculating their joint location probability distribution function. Our simulation results show that as long as the correlation coefficient is larger than to a specific value, the location correlation could be used to reduce the average paging delay and increase the maximum stable throughput.

With the state-of-the-art IC technology, we can share a variety of digital content stored in our mobile devices via wireless communications. When requests for digital content arrive, base stations have to search for at least one copy of the digital content. We extend the concurrent search approach to efficiently location digital content. In addition, we propose the opportunistic concurrent search scheme in which a base station could use a single channel to page a number of mobile stations simultaneously. We use computer simulations to evaluate the performance and justify the usage of the proposed schemes.

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