Thesis (M.Phil.)--Hong Kong University of Science and Technology, 2003. / Includes bibliographical references (leaves 69-70). Also available in electronic version. Access restricted to campus users.

Thesis (M.A.)--University of South Florida, 2003. / Title from PDF of title page. Document formatted into pages; contains 97 pages. Includes bibliographical references.

Thesis (Ph. D.)--Ohio State University, 2003. / Title from first page of PDF file. Document formatted into pages; contains xvi, 135 p.: ill. Includes abstract and vita. Co-advisors: Wu-Chi Feng, Dong Xuan, Dept. of Computer ad information Science. Includes bibliographical references (p. 129-135).

Cloud computing, which is among the trendiest computing paradigms in recent years, is believed to be most suitable for supporting network-centric applications by providing elastic amounts of bandwidth for accessing a wide range of resources on the y. In particular, geo-distributed cloud systems are widely in construction nowadays. They span multiple data centers at different geographical locations, thus offering many advantages to large-scale multimedia applications because of the abundance of on-demand storage/bandwidth capacities and their geographical proximity to different groups of users. In this thesis, we investigate the common fundamental challenges in how to efficiently leverage the power of cloud resources to facilitate multimedia content delivery in various modern real world applications, from different perspectives. First, from the perspective of application providers, we propose tractable procedures for both model analysis and system designs of supporting representative large scale multimedia applications in a cloud system, i.e., VoD streaming applications and social media applications, respectively. We further verify the effectiveness of these algorithms and the feasibility of their deployment under dynamic realistic settings in real-life cloud systems. Second, from the perspective of end users, we target our focus at mobile users. The rapidly increasing power of personal mobile devices, dwarfing even high-end devices, is providing much richer contents and social interactions to users on the move, and many more challenging applications are on the horizon. We explore the tough challenges of how to effectively exploit cloud resources to facilitate mobile services by introducing two cloud-assisted mobile systems (i.e., CloudMoV and vSky-Conf), and explain in details their design philosophies and implementation. Finally, from the perspective of the cloud providers, we realize existing data center networks lack the flexibility to support many core services, given our hands-on experiences from working with public cloud systems. One of the specific problem is, “bulk data transfers across geo-distributed datacenters". After formulating a novel and well-formed optimization model for treating the data migration problem, we design and implement a Delay Tolerant Migration (DTM) system based on the Beacon platform and standard OpenFlow APIs. The system realizes a reliable Datacenter to Datacenter (D2D) network by applying the software defined networking (SDN) paradigm. Real-world experiments under realistic network traffic demonstrate the efficiency of the design. / published_or_final_version / Computer Science / Doctoral / Doctor of Philosophy

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<p> The purpose of this study was to investigate the impact of two television cooking shows (healthy and unhealthy) among students at California State University, Long Beach. Specifically, the study evaluated the effects cooking shows have on food preferences for side dish, entr&eacute;e and dessert options before and after viewing each show and by type of show viewed. </p><p> Participants were selected from students at California State University, Long Beach through convenience sampling. Willing participants completed two online surveys, each containing a different television cooking show episode along with an array of food images to select from. The cooking show episodes and the food images used in the survey were categorized as healthy or less healthy based on the nutrient profiling system, Model WXYfm. </p><p> Fifty-nine and 56 survey responses were included in the final analysis of the healthy and unhealthy cooking show, respectively. Food preferences were determined through the selection of food images in the surveys and analyzed using Chi-square tests. The results of this study show that television cooking shows promoting healthy and unhealthy foods have the potential to impact food preferences, particularly due to food exposure. Significant differences were found for five out of the nine hypotheses.</p>

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Self-independent learning is activity helping for learners to develop their responsibility, independence and ability to orient and understand the essence of activity. These are the main criteria for planning career and perceive long life learning concept and need. Project goal – to create programming product for self-independent learning, which could use video and audio material for learning purposes and give possibility to learn for those who hasn‘t approach to internet. The programming product first of all is very actual for learners who live far-off regions and for disable people. The programm allows to change learning schedule at home, learning material given through lectures is easy to remember. Programm is actual for learning institutions – it reduces teacher‘s contact and consulting hours, and teachers could spend more time on research work. The project itself could serve as a motivation to use audio and video material in various teaching profile institutions. Programm was developed in Borland Delphi 7 programming language by requirements of customer.

<p>My dissertation contains three empirical studies on firm and demand behavior in the U.S. high-speed Internet market. The first study examines the question that the probability of new entry varies with the characteristics of markets in which an incumbent firm is able to offer mixed bundling. Empirical findings present low entry rates in markets with high income and more years of schooling, because these markets are associated with low likelihood of switching. As the federal government aims to increase high-speed Internet access, more competition led by a new entry can increase high-speed Internet penetration and encourage the competitive provision of advanced high-speed Internet service. </p><p> The second study focuses on the relationship between Internet privacy concerns and offline businesses. The growth of online shopping has raised concerns about online privacy protection, which may lead consumers to be more likely to shop at offline stores. Empirical evidence suggests that Internet privacy concerns are positively related to the number of offline businesses, such as bookstores and travel agencies and the growth of offline businesses in the retail trade and the finance and insurance industries. This can provide interesting policy implications for local economies. </p><p> The third study examines two competing explanations regarding the demand for online health services: locations of consumers and the opportunity cost of time. The former expects that the longer distance to hospitals increases rural residents' demand for online health service, whereas the latter takes into account the possibility that urban residents whose valuations of time are high have a high demand for these services. This study finds that the demand for online health services does not vary with the location of consumers or the opportunity cost of time. The federal government has expanded this service in rural areas, which may provide limited benefits to these communities. </p>