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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.

Journalism and the Internet putting things into context /

Parry, Lance A. January 1900 (has links)
Thesis (M.S.)--West Virginia University, 2003. / Title from document title page. Document formatted into pages; contains v, 29 p. Vita. Includes abstract. Includes bibliographical references (p. 27-28).

New startup mechanisms for faster web response time on lossy and long-delay Internet paths

Tambuwal, Ahmed Yusuf January 2013 (has links)
The present Internet is used to support a diversity of application types, each with different performance expectations. Latency is a fundamental component that affects end-user's Internet experience. Many applications can benefit from reduced latency. The thesis examines the startup latency of the Standard Transmission Control Protocol (TCP Reno) congestion control algorithm when used for short-lived interactive applications. TCP plays a key role in preventing Internet failure by decreasing network utilization when it detects packet drops or receives explicit congestion signals. TCP Reno senders react to congestion by reducing their rate by approximately half. When a flow has recently started, TCP Reno has no way to determine the available capacity, and uses a conservative startup method that can result in high latency for short-lived interactive applications with only a small amount of data to send. This is especially so when there is loss of the connection setup packet before a flow starts. This thesis therefore proposes a new algorithm called TCP SYN Loss (TSL) Startup Algorithm that uses a halving congestion response function during startup, which is less conservative than the current method. After connection setup is completed, standard TCP congestion control is applied for the data transfer phase. The new method is shown to significantly reduce web response time by increasing TCP Reno robustness against startup loss. Startup latency also affects users who rely on broadband satellite for Internet access. Application performance is impacted by the delay of bandwidth-on-demand (BoD) multiple access control (MAC) protocol at the start of a TCP flow when there are no prior capacity assignments. This thesis proposes a new method that combines Random Access (RA) and BoD to reduce web response time and startup delay of media streaming over satellite. Furthermore, a modified algorithm called the Split RADAMA protocol was designed to avoid the negative transport effects when switching between RA and BoD transmissions e.g. packet reordering and spurious retransmission. Together the proposed methods can significantly improve web experience for a wide range of end-users by reducing the response time for short-lived interactive applications.

Learning-based Web query understanding /

Shen, Dou. January 2007 (has links)
Thesis (Ph.D.)--Hong Kong University of Science and Technology, 2007. / Includes bibliographical references (leaves 144-162). Also available in electronic version.

The influence of information-seeking strategies on uncertainty in electronic commerce /

Luo, Chuan. January 2009 (has links) (PDF)
Thesis (Ph.D.)--City University of Hong Kong, 2009. / "Submitted to Department of Information Systems in partial fulfillment of the requirements for the degree of Doctor of Philosophy." Includes bibliographical references (leaves 106-114)

On the use of the appropriateness and cohesiveness Web data quality dimensions for finding high quality Web pages /

Pun, Joshua Chun-chung. January 2006 (has links)
Thesis (Ph.D.)--Hong Kong University of Science and Technology, 2006. / Includes bibliographical references (leaves 108-115). Also available in electronic version.

On improving the relevancy ranking algorithm in web search engine

李莉華, Lee, Lei-wah. January 2000 (has links)
published_or_final_version / Computer Science and Information Systems / Master / Master of Philosophy

On improving the relevancy ranking algorithm in web search engine /

Lee, Lei-wah. January 2000 (has links)
Thesis (M. Phil.)--University of Hong Kong, 2000. / Includes bibliographical references (leaves 78-81).

Consumer information search and decision processes in a web-based shopping environment

Li, Pei-fen, Cunningham, Isabella C. M. January 2004 (has links)
Thesis (Ph. D.)--University of Texas at Austin, 2004. / Supervisor: Isabella C. M. Cunningham. Vita. Includes bibliographical references. Also available from UMI.

Generating data-extraction ontologies by example /

Zhou, Yuanqiu, January 2005 (has links) (PDF)
Thesis (M.S.)--Brigham Young University. Dept. of Computer Science, 2005. / Includes bibliographical references (p. 63-65).

Content based querying and searching for 3D human motions /

Pawar, Manoj Mahipat, January 2007 (has links)
Thesis (M.S.)--University of Texas at Dallas, 2007. / Includes vita. Includes bibliographical references (leaves 27-28)

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