Thesis (M. S.)--Electrical and Computer Engineering, Georgia Institute of Technology, 2007. / Rehg, James, Committee Member ; Juang, Biing-Hwang, Committee Member ; Essa, Irfan, Committee Chair.

Thesis (Ph. D.)--University of Texas at Austin, 2005. / Supervisor: Simon S. Lam. Vita. Includes bibliographical references.

Thesis (Ph. D.)--Electrical and Computer Engineering, Georgia Institute of Technology, 2007. / Allen R. Tannenbaum, Committee Member ; Jeffrey A. Davis, Committee Member ; Hsien-Hsin S. Lee, Committee Member ; Linda M. Wills, Committee Co-Chair ; D. Scott Wills, Committee Chair ; Gabriel H. Loh, Committee Member.

Flexible and adaptive quality of service (QoS) is desirable for real-time multimedia applications. Suppose a multimedia system is supporting a 30 frame/second video stream which is using a network bandwidth of 2 Mbps, and due to network congestion the network bandwidth is reduced to 1 Mbps. It is desirable that the system supports graceful adaptation of quality of the video stream, for example, by reducing the frame rate to 15 frame/second. The focus of this dissertation is to investigate the design of an adaptive multimedia system (AMS) with multiple concurrent sessions, where the quality of individual sessions is dynamically adapted to the available resources and to the run-time user preferences. We propose the Utility Model -- a Mathematical model to capture the issues of resource management within multisession AMSs. In this model, each session provides a quality profile, which is a set of operating qualities arranged from the minimum acceptable quality to the maximum desired quality. Any operating quality may be mapped to the required resources using a quality-resource mapping, and also to a session utility using a quality-utility mapping. The main problem in a multisession AMS is to find an operating quality for each session such that the overall system utility (e.g. system revenue) is maximized under the system resource constraints. This is called the adaptive multimedia problem (AMP). The Utility Model formulates the AMP as the multiple-choice multi-dimension 0–1 knapsack problem (MMKP). It provides a unified and computationally feasible way to solve the admission problem for new multimedia sessions. and the dynamic quality adaptation and integrated resource allocation problems for existing sessions. In order to use the Utility Model, we propose two solutions for the (MMKP): a branch and bound algorithm BBLP for optimal solutions, and a heuristic HEU for fast and near-optimal solutions. We report computational experiences, and compare the two approaches for practical applications, finding that HEU solutions are usually within 4% of the optimum but at a much reduced computational cost. The heuristic HEU is suitable for time-critical applications such as real-time admission and adaptation decisions in multimedia systems. We present the Padma Architecture—a system architecture for multisession AMSs. This architecture has two novelties: (1) integrated and adaptive management of system resources based on the Utility Model, and (2) the use of metaspaces to encapsulate the machinery of quality adaptation. The former provides improved resource utilization and dynamic quality adaptation, and the latter provides the application programmers freedom from the concerns of low-level resource management issues while developing multimedia applications. Finally, we present the Utility Model Demonstration Prototype (UMDP)—a prototype which demonstrates the capability of the Utility Model to handle admission control, quality adaptation and integrated resource allocation in a unified way. We evaluate the performance of UMDP using random sequences of events, and show that the system utility achieved by the UMDP is significantly higher than that of a simple reservation model prototype (SRMP). For applications such multimedia service providers, it means that UMDP will generate more revenue than SRMP from the same amounts of system resources provisioned. / Graduate

ABSTRACT This dissertation has two aims. The first is to further expand the scope of composition studies to include the/a/our body within digital multimodal composition—considering how it can be an active participant in both the process and the product. The second aim is to interrogate the ways in which the/a/our body interacts with technological components through literacy activities that are engaged within the composing process. Toward that end, it attends to the following overarching question: how does a composer creates an embodied digital performance? The problem space of this dissertation is multifaceted, building first upon bodies in composition and then exploring how they might potentially add to the importance of digital multimodal composition; these two areas of focus are not always examined in tandem, which makes their connection a space worth studying. Therefore, this dissertation addresses both challenging spaces by asking sub questions: 1) How does a composer incorporate his or her body as a site of or component of digital multimodal composition? 2) What literacy activities facilitate the movement between or the integration of material and digital bodies? This exploration adds to the existing scholarship within Rhetoric and Composition because it invites compositionists to consider, and explicitly acknowledge, the body as we continue to compose digitally, thereby revisiting the multimodal component of the body and pushing the boundaries between material and digital composing. In order to answer these questions, this dissertation describes the composing process through the lens of dance; identifies literacy activities in which the/a/our body participates; and theorizes the ways in which digital embodiment, and the mind-body connection reintegrate (explicitly) the/a/our body into the composing process. In order to understand the/a/our body’s potential in composition, this study focuses upon a singular case study that crosses disciplinary boundaries by examining digital dance, or dance and technology choreography. This study details the invention, revision, and performance of the dance Zero, One… performed in spring 2015. Studying this particular performance piece throughout the process highlighted the ways in which a composer (the choreographer in this instance) worked to simultaneously integrate movement phrases of the/a/our body and movement of digital projection as an immersive experience for both the dancers and the audience. In addition to the observation of rehearsals and the performances, interviews were conducted with both the choreographer and the dancers in order to understand the experiences of the composing body and the bodies that were a part of the final product, and choreography notes were collected. The data collected was analyzed in layers; first, it was organized into the major components of the composing process, then the interviews were inductively coded with two coding schemes, and the choreography notes and video observations were analyzed holistically. The analysis of the data points to four key contributions that directly impact approaches to digital multimodal composition: 1) the/a/our body is active in the process of digital multimodal composition—composing across invention, revision, and performance through the literacy activities enacted; 2) the integration of the/a/our body and technology creates a sense of hyperawareness (distributing attention/awareness to multiple components simultaneously), and it uses kinesthetic awareness (awareness of the relationship between the/a/our body and space) to achieve integration; 3) the somatic and digital components inform one another in the creation of each through their affordances and constraints because they evolve in tandem; and 4) the/a/our body shifts from the individual and becomes a part of the whole within the performance of the digital multimodal composition, and it achieves this by redistributing focus to all of the contributing elements equally. The/a/our body is an active and necessary component in digital multimodal composition, and it is not only relegated to being the composing body but also a contributing element to the composition as a whole. / A Dissertation submitted to the Department of English in partial fulfillment of the requirements for the degree of Doctor of Philosophy. / Summer Semester 2016. / June 21, 2016. / Body, Composition, Dance, Embodiment, Literacy, Multimodality / Includes bibliographical references. / Kristie S. Fleckenstein, Professor Directing Dissertation; Cassandra Cole, University Representative; Michael Neal, Committee Member; Tarez Graban, Committee Member.

by Chang Hsiao Hui Virina and Lee Kin On. / Thesis (M.B.A.)--Chinese University of Hong Kong, 1994. / Includes bibliographical references (leaves 81-83). / ABSTRACT --- p.ii / TABLE OF CONTENT --- p.iii / ACKNOWLEDGEMENT --- p.v / Chapter / Chapter I. --- INTRODUCTION --- p.1 / Commercial Multimedia Applications --- p.2 / Home Multimedia Application --- p.2 / Research Objectives --- p.3 / Structure of the Report --- p.3 / Chapter II. --- LITERATURE REVIEW --- p.5 / Existing Research Results in Hong Kong --- p.5 / World Market Vendor --- p.7 / Definition of Multimedia --- p.9 / Applications --- p.10 / Benefit to Customers --- p.11 / Customer Demand --- p.12 / Technological Development --- p.12 / Market Situation --- p.15 / Vision or Perceived Role of World Players --- p.18 / Positioning --- p.18 / Problems Encountered --- p.21 / Business Strategies --- p.21 / Multimedia in Hong Kong --- p.23 / Chapter III. --- METHODOLOGY --- p.25 / Purpose of Interview --- p.25 / Questionnaire Design --- p.26 / Selection of Appropriate Vendors --- p.26 / Preliminary Screening of Vendors --- p.27 / Face-to-Face Interview --- p.28 / Lists of Vendor Interviewed --- p.28 / Chapter IV. --- RESULTS --- p.30 / Vendors' Definition of Multimedia --- p.30 / Application & Applied Industry/Sector --- p.31 / Perceived Benefits to Customers --- p.32 / Perceived Customer Demand --- p.33 / Technology Development --- p.34 / Local Market Situation --- p.35 / Perceived Role --- p.36 / Vendor Positioning --- p.37 / Problems Encountered --- p.38 / Business Strategy (& Future Plan) --- p.39 / Chapter V. --- ANALYSIS --- p.41 / Customer Demand and Application --- p.41 / Problems Encountered --- p.43 / Local Characteristics --- p.44 / Business Strategy --- p.45 / Chapter VI. --- LIMITATIONS --- p.48 / Selection Bias --- p.48 / Non-coverage Bias --- p.48 / Interviewee Bias --- p.48 / Refusal to Disclose Sales Figures --- p.49 / Suggested Rectification --- p.49 / Further Research Area --- p.50 / Chapter VII. --- CONCLUSION --- p.51 / APPENDICES --- p.52 / Appendix 1 - Interview Result With CIM Systems Ltd --- p.52 / Appendix 2 - Interview Result With Apple Computer Ltd --- p.55 / Appendix 3 - Interview Result With Philips HK Ltd --- p.58 / Appendix 4 - Interview Result With Asia-CD --- p.61 / Appendix 5 - Interview Result With KPS --- p.64 / Appendix 6 - Interview Result With IBM HK Corporation --- p.66 / Appendix 7 - Interview Result With Pancha Books --- p.68 / Appendix 8 - Interview Result With System General Ltd --- p.71 / Appendix 9 - Interview Result With HK Productivity Council --- p.73 / Appendix 10 - Questionnaire On Multimedia Supplier --- p.76 / Appendix 11 - HK Economic and Socio-Demographic Environment --- p.78 / BIBLIOGRAPHY --- p.81

Access scheduling is essentially power control with only on-off options. The second part is dealing with situations where user transmissions can exist simultaneously. Here, a problem of distributed power control for time varying systems is investigated in order to coordinate transmit power among users for their respective quality-of-service (QoS). We deal with a class of power control problems where the system link gains are assumed to be time varying and SIR estimates are allowed to be corrupted with bounded noises. A simple control algorithm is devised by applying a distributed, fixed-step approach. The feedback algorithm requires only local information. By modifying the fixed-step power control algorithm proposed by Sung and Wong, here we obtain a more robust version that can handle time varying link gains and measurement noises. The result extends the Foschini and Miljanic model to allow fading and measurement errors. Convergence property of the new algorithm is established. Simulation studies have been conducted and results show that it is effective. / In integrated wireless multimedia service, isochronous traffic of different connections can be scheduled by using a most regular binary sequence (MRBS). Such a sequence can schedule traffic in an evenly spaced manner to achieve any arbitrary rate asymptotically while avoiding excessive delay and buffering requirement. Flexible time slot assignment that can match requests exactly improves the bandwidth utilization efficiency in supporting multi-rate operations for traffics of various classes. The most regular binary sequence provides such a distributed solution for multi-access control that only requires a limited information exchange. Generally, the idea can be developed to support flexible resource allocation in various communication systems such as hybrid TD-CDMA and MC-CDMA systems. It results in an overall capacity gain. More interestingly, the MRBS transmission scheduling is applicable in a network sense. Deterministic end-to-end performance guarantees such as packet delay and buffering requirement can be investigated in a systematic way. Discussions of periodic binary sequences with interesting characteristics are presented in succession. / Chen Chung Shue. / "September 2005." / Adviser: Wing Shing Wong. / Source: Dissertation Abstracts International, Volume: 67-07, Section: B, page: 3984. / Thesis (Ph.D.)--Chinese University of Hong Kong, 2005. / Includes bibliographical references (p. 154-167). / 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. / Abstract in English and Chinese. / School code: 1307.

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