Thesis (M.S.)--West Virginia University, 2008. / Title from document title page. Document formatted into pages; contains vi, 47 p. : ill. (some col.). Includes abstract. Includes bibliographical references (p. 43-46).

Thesis (M. Phil.)--University of Hong Kong, 2005. / Title proper from title frame. Also available in printed format.

published_or_final_version / Electrical and Electronic Engineering / Master / Master of Philosophy

Lam, Fuk Ming. / Thesis (M.Phil.)--Chinese University of Hong Kong, 2008. / Includes bibliographical references. / Abstracts in English and Chinese. / Abstract --- p.I / Acknowledgements --- p.V / Table of Contents --- p.VI / List of Figures --- p.IX / List of Tables --- p.XVI / Chapter Chapter 1 --- Introduction --- p.1 / Chapter 1.1 --- Background --- p.1 / Chapter 1.2 --- Overview of the Work --- p.5 / Chapter 1.3 --- Original contribution of this thesis --- p.6 / Chapter 1.4 --- Organization of this thesis --- p.7 / Chapter 1.5 --- Remarks on frequency dependent parameters in this thesis --- p.8 / Reference --- p.9 / Chapter Chapter 2 --- Small Antennas for mobile phone applications --- p.10 / Chapter 2.1 --- Introduction --- p.10 / Chapter 2.2 --- Definitions --- p.11 / Chapter 2.2.1 --- Quality factor --- p.11 / Chapter 2.2.2 --- Efficiency --- p.12 / Chapter 2.2.3 --- Return Loss and impedance bandwidth --- p.12 / Chapter 2.2.4 --- Antenna gain and radiation pattern --- p.13 / Chapter 2.3 --- Fundamental limitations of small antenna --- p.14 / Chapter 2.4 --- Low-profile and Dual-band techniques --- p.16 / Chapter 2.4.1 --- Inverted-L/F and Planar Inverted-F Antenna --- p.16 / Chapter 2.4.2 --- Dual-band PIFA --- p.21 / Chapter 2.4.3 --- Discussion on miniaturization of mobile phone antenna --- p.23 / Chapter 2.5 --- Ground plane effect of mobile phone antenna --- p.26 / Chapter 2.5.1 --- Optimal location to excite antenna over a finite ground plane --- p.26 / Chapter 2.5.2 --- Dependence of resonant frequency and impedance bandwidth on ground plane length --- p.27 / Chapter 2.5.3 --- Dual-resonator model for mobile phone antenna --- p.32 / Chapter 2.6 --- Summary --- p.38 / Reference --- p.38 / Chapter Chapter 3 --- A Multilayeredly Rolled Inverted-F Antenna for Dual-band Mobile Phones --- p.42 / Chapter 3.1 --- Introduction --- p.42 / Chapter 3.2 --- Literature review on rolled antennas --- p.43 / Chapter 3.3 --- Proposed MRIFA --- p.47 / Chapter 3.3.1 --- Antenna configuration --- p.47 / Chapter 3.3.2 --- Simulation studies --- p.51 / Chapter 3.3.3 --- Prototype and Experimental results --- p.59 / Chapter 3.3.4 --- Comparison with a reference PIFA --- p.66 / Chapter 3.4 --- Mobile phone installed with the MRIFA --- p.70 / Chapter 3.5 --- Summary --- p.80 / Reference --- p.81 / Chapter Chapter 4 --- A fast method to evaluate Total Isotropic Sensitivity (TIS) in mobile phone active measurement --- p.82 / Chapter 4.1 --- Introduction --- p.82 / Chapter 4.2 --- Proposed fast method for TIS evaluation --- p.85 / Chapter 4.2.1 --- Observed relationship between total Effective Isotropic Radiated Power (EIRP) and total Effective Isotropic Sensitivity (EIS) --- p.85 / Chapter 4.2.2 --- EIS's estimation from EIRPs for TIS evaluation --- p.89 / Chapter 4.3 --- Summary --- p.92 / Reference --- p.93 / Chapter Chapter 5 --- Conclusion --- p.94 / List of Publications --- p.96 / Appendix A - Details of sample mobile phones investigated in this thesis research --- p.97 / Appendix B - Active measurement of mobile phone's transmit power and receiver sensitivity --- p.107 / Appendix C - MRIFA realization procedure --- p.118

There have been a number of studies concerning the access and usage patterns of mobile phones since the first cellular phone appeared in 1979. With the appearance of the smart phone a recent field of research emerges within media and communication. This study focuses on what role a particular smart phone plays within the users’ communication practices. Combining individuality and mobility with communication, the iPhone changes the users’ way of communication completely. In addition to that, the use of the iPhone comprises self-representational characteristics. The study aims to research what role the user ascribes to the iPhone. A field observation of iPhone users combined with qualitative focus group interviews will present more insight in how the iPhone maintains the users’ interpersonal relationships and fulfils their communication motives. The field observation might bear some general aspects about usage patterns of the iPhone, especially in public spaces. Supplementing the field observation, the focus group interviews will give some information about personal usage patterns and about the iPhone’s status within individual perceptions. The use of smart phones like the iPhone influences the user’s ways of communication in positive as well as in negative ways. A constant access to various networks establishes a permanent availability, which entails major changes in the users’ way of communication and the users’ perception of time and space. In addition to that, the design and look of the gadget is a main appeal for iPhone users. Here the smart phone turns out to be an accessory with which people make statements to their surrounding. These statements can be of different nature. They can be based on image, fashion or design conscious in the user’s perception. This study intends to bring up new topics about the relationship between a technical device and its user

Most mobile phones in Canada contain software that prevents the consumer from using the phone on multiple networks. This is known as a ‘software lock’, and is installed prior to the point of sale by the mobile service providers. As of 2011, all three large Canadian service providers have adopted a similar practice to charge a fee to remove the software lock from phones. This fee applies even after the consumer’s service contract with the provider ends. This thesis examines whether the practice of charging consumer a fee for removing the software lock after the contract expires is anti-competitive in Canada. Through examining economic theory and undergoing legal analysis, this thesis will argue that while the practice is clearly anti-competitive, it does not substantially lessen competition enough to be prevented under competition law. This thesis suggests that this industry practice should be prohibited through the passing of consumer protection legislation.

Most mobile phones in Canada contain software that prevents the consumer from using the phone on multiple networks. This is known as a ‘software lock’, and is installed prior to the point of sale by the mobile service providers. As of 2011, all three large Canadian service providers have adopted a similar practice to charge a fee to remove the software lock from phones. This fee applies even after the consumer’s service contract with the provider ends. This thesis examines whether the practice of charging consumer a fee for removing the software lock after the contract expires is anti-competitive in Canada. Through examining economic theory and undergoing legal analysis, this thesis will argue that while the practice is clearly anti-competitive, it does not substantially lessen competition enough to be prevented under competition law. This thesis suggests that this industry practice should be prohibited through the passing of consumer protection legislation.

Faculty of Criminology, Justice and Policy Studies

The elaboration of this thesis involved several stages, and since it is a complex subject matter, it was imperative to maintain a multidisciplinary focus. In the rst stage, the need to improve the innovation performance in Latin America and the Caribbean is identied. In the second, the appropriate methodology for this research is selected. Here, it was determined that a framework comprising the innovation system approach is the most suitable framework for this research. In the third stage, the relevant body of extant literature is reviewed and the research problem formulated. In the fourth stage, the data is collected and characterized. During the fth stage, the gathered information is analyzed and the results presented. In the sixth stage, experiences in other regions are examined and best practices acquired. In the nal stage, the key enablers, best practices and the elements are identied, transformed and adapted into several recommendations for Latin American and Caribbean policy makers.

<p>Localization is projected to play a critical role in mobile computing applications. Nevertheless, the state of the art is inadequate especially when operating on mobile devices. More specifically, the on-phone GPS sensor has an unacceptable energy consumption and does not operate indoors. Alternate localization techniques, based on WiFi or GSM, alleviate some of the GPS limitations but provide degraded accuracy and assume pre-installed infrastructure. As a result, these solutions need extensive war-driving for collecting location fingerprints and, in many instances, limit services to regions close to drivable paths. Moreover, when infrastructure is scarce or missing, the localization accuracy is poor. Lastly, relying on hardware deployments is costly and raises scalability concerns when targeting wide regions.</p><p>To address the shortcomings of current solutions, we propose four new localization systems: (1) CompAcc enables energy-efficient, war-driving-free localization using the phone inertial sensors and digital maps, (2) Escort provides indoor localization by exploiting the phone inertial sensors and social environments where people are mobile, (3) SurroundSense enables indoor logical localization (e.g., inside Target) by sensing the user ambiance through the phone sensors, and (4) EnLoc proposes energy-efficient localization via personalized mobility profiling and predictions.</p> / Dissertation