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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.
121

A constrained steiner tree approach for reconstructions of multicast trees.

January 2004 (has links)
Sun Tong. / Thesis (M.Phil.)--Chinese University of Hong Kong, 2004. / Includes bibliographical references (leaves 77-81). / Abstracts in English and Chinese. / Chinese Abstract --- p.I / Abstract --- p.II / Acknowledgements --- p.III / List of Contents --- p.IV / List of Figures --- p.VII / Chapter Chapter 1 --- Introduction --- p.1 / Chapter 1.1 --- Multicast Routing Problem --- p.1 / Chapter 1.2 --- Constrained multicast routing problem and SSRA algorithm --- p.4 / Chapter 1.3 --- Thesis organization --- p.7 / Chapter Chapter 2 --- Constrained Multicast Routing Algorithms --- p.8 / Chapter 2.1 --- Steiner tree heuristic --- p.8 / Chapter 2.1.1 --- Shortest Paths Heuristic --- p.9 / Chapter 2.1.2 --- Distance Network Heuristic --- p.10 / Chapter 2.2 --- Review of existing constrained multicast routing algorithms --- p.10 / Chapter 2.2.1 --- Static group member --- p.10 / Chapter 2.2.2 --- Dynamic group member --- p.14 / Chapter 2.2.2.1 --- Non-rearrangeable --- p.15 / Chapter 2.2.2.2 --- Rearrangeable --- p.23 / Chapter Chapter 3 --- Small Scale Rearrangement Algorithm for Multicast Routing --- p.32 / Chapter 3.1 --- Problem formulation --- p.32 / Chapter 3.1.1 --- Network Model --- p.32 / Chapter 3.1.2 --- Problem Specification --- p.33 / Chapter 3.1.3 --- Definitions and Notations --- p.36 / Chapter 3.2 --- Local Checking Scheme (LCS) --- p.37 / Chapter 3.3 --- Small Scale Rearrangement Algorithm (SSRA) for Multicast Routing --- p.41 / Chapter 3.3.1 --- Static group membership --- p.42 / Chapter 3.3.2 --- Dynamic group membership --- p.43 / Chapter 3.3.2.1 --- Node addition --- p.44 / Chapter 3.3.2.2 --- Node removal --- p.44 / Chapter 3.3.2.3 --- General steps --- p.45 / Chapter 3.3.2.4 --- Example --- p.47 / Chapter Chapter 4 --- Analysis --- p.50 / Chapter Chapter 5 --- Simulations --- p.54 / Chapter 5.1 --- Simulation Model --- p.54 / Chapter 5.2 --- Simulation Parameters Parameter Default Value/Generating Method --- p.56 / Chapter 5.3 --- Performance Metrics --- p.58 / Chapter 5.4 --- Discussion of Results --- p.59 / Chapter 5.4.1 --- Group 1: static group membership --- p.59 / Chapter 5.4.2 --- Group 2: dynamic group membership --- p.63 / Chapter 5.4.3 --- Comparison --- p.69 / Chapter 5.5 --- Implementation Issue --- p.73 / Chapter Chapter 6 --- Conclusion --- p.75 / Reference --- p.77
122

Nonblocking multicast Clos networks. / 無阻塞組播Clos網絡 / Wu zu sai zu bo Clos wang luo

January 2011 (has links)
Wan, Yujie. / Thesis (M.Phil.)--Chinese University of Hong Kong, 2011. / Includes bibliographical references (leaves 52-56). / Abstracts in English and Chinese. / Abstract --- p.i / Acknowledgement --- p.iii / Chapter 1 --- Introduction --- p.1 / Chapter 1.1 --- Nonblocking Conditions of Three-stage Clos Networks --- p.2 / Chapter 1.2 --- Previous Works on Unicast Nonblocking Conditions --- p.4 / Chapter 1.3 --- Previous Works on Multicast Nonblocking Conditions --- p.7 / Chapter 1.4 --- Thesis Organization and Contributions --- p.9 / Chapter 2 --- Unified Coloring Framework --- p.11 / Chapter 2.1 --- Conflict Graph of Multicast Calls --- p.11 / Chapter 2.2 --- Check of Unicast Nonblocking Conditions --- p.17 / Chapter 2.3 --- Call Splitting and Hardware Models --- p.20 / Chapter 3 --- SNB Conditions --- p.24 / Chapter 3.1 --- Model 1 --- p.25 / Chapter 3.2 --- "Model 0, 2, and 3" --- p.26 / Chapter 3.2.1 --- Worst-Case Call Splitting --- p.26 / Chapter 3.2.2 --- Proof of Nonblocking Conditions --- p.27 / Chapter 3.3 --- Comparison and Discussion --- p.31 / Chapter 4 --- WSNB and RNB Conditions --- p.33 / Chapter 4.1 --- Review of Results for Model 1 --- p.33 / Chapter 4.2 --- Review of Results for Model 2 --- p.35 / Chapter 4.3 --- New Results for Model 3 --- p.36 / Chapter 4.3.1 --- Proof of Nonblocking Conditions --- p.36 / Chapter 4.3.2 --- WSNB Routing Algorithm --- p.39 / Chapter 4.3.3 --- Comparison and Discussion --- p.40 / Chapter 4.4 --- New Results for Model 0 --- p.41 / Chapter 4.4.1 --- Equivalence between RNB Condition and K-partite Vertex Coloring --- p.41 / Chapter 4.4.2 --- Proof of Nonblocking Conditions --- p.43 / Chapter 4.4.3 --- Comparison and Discussion --- p.47 / Chapter 5 --- Conclusion and Future Work --- p.49 / Bibliography --- p.52
123

Low communication cost parallel system using PCs.

January 1996 (has links)
by Yiu Sau Yan Vincent. / Thesis (M.Phil.)--Chinese University of Hong Kong, 1996. / Includes bibliographical references (leaves 86-88). / Chapter 1 --- Introduction --- p.1 / Chapter 2 --- Related Works --- p.3 / Chapter 2.1 --- Tightly-coupled Parallel Systems --- p.5 / Chapter 2.2 --- Loosely-coupled Parallel Systems --- p.6 / Chapter 3 --- Communication Protocol --- p.11 / Chapter 3.1 --- Terminology --- p.12 / Chapter 3.2 --- CUP Model --- p.14 / Chapter 3.3 --- Message Format --- p.15 / Chapter 3.4 --- Message Header --- p.16 / Chapter 3.5 --- Message Content - Control Message --- p.17 / Chapter 3.6 --- Message Transfer Functions --- p.18 / Chapter 3.7 --- Application Development --- p.22 / Chapter 4 --- Multiple Computer Infrastructure --- p.28 / Chapter 4.1 --- Application Supper --- p.32 / Chapter 4.1.1 --- Send and Receive --- p.34 / Chapter 4.1.2 --- Multicast --- p.35 / Chapter 4.1.3 --- Barrier Synchronization --- p.36 / Chapter 4.1.4 --- Start and Delete Process --- p.37 / Chapter 4.2 --- Local Message Routing --- p.39 / Chapter 4.2.1 --- Berkeley Socket --- p.40 / Chapter 4.2.2 --- System V Message Queue --- p.45 / Chapter 4.2.3 --- Shared Memory Queue SMQ --- p.47 / Chapter 4.3 --- Network Message Routing --- p.49 / Chapter 4.3.1 --- Ethernet & TCP Socket --- p.51 / Chapter 4.3.2 --- SCSI Link --- p.52 / Chapter 5 --- System Supporting Facilities --- p.54 / Chapter 5.1 --- Kernel Message Support --- p.54 / Chapter 5.2 --- SCSI Hardware & Device Driver --- p.60 / Chapter 5.2.1 --- SCSI Bus Operations --- p.61 / Chapter 5.2.2 --- Device Driver Internals --- p.65 / Chapter 6 --- Performance --- p.73 / Chapter 7 --- Conclusion --- p.83 / Chapter 7.1 --- Summary of Our Research --- p.83 / Chapter 7.2 --- Future Researches --- p.84
124

MCCS : the design and implementation of a multi-computer communications system

Fox, Sheldon Lee January 2010 (has links)
Digitized by Kansas Correctional Industries
125

A microprocessor based communications controller for small computer networks /

Valiveti, Radhakrishna. January 1981 (has links)
No description available.
126

Network reliability estimation

Hui, Kin-Ping January 2005 (has links)
Computing the reliability of a network is a #P-complete problem, therefore estimation by means of simulation often becomes a favourable choice. In modern communication networks, link failure probabilities are usually small and hence network failures become rare events. This poses a challenge to estimate the network reliability. In this thesis we present different techniques for network reliability estimation. There are two main sampling techniques in reliability estimation: combinatorial and permutational sampling. Combinatorial sampling has the advantage of speed but has poor performance in rare event simulations. Permutational sampling gives good simulation performance but at a higher computational cost. We combine the two techniques and propose a hybrid sampling scheme called Tree Cut and Merge. By employing simple bounding together with clever conditional sampling, the TCM scheme achieves over 10(superscript 7) times speed up in certain classes of heterogeneous networks. The Crude Monte Carlo (combinatorial) component in the Tree Cut and Merge scheme may cause problems in some situations. In bad cases, the slow convergence problem re-appears. To address the problem, we modifed the scheme by introducing the Importance Sampling technique. The new Tree Cut and Merge with Importance Sampling scheme maintained the speed advantage of the Tree Cut and Merge and minimizes, at the same time, the potential problems caused by the Crude Monte Carlo component. Associated with the Importance Sampling technique, a new technique called the Cross-Entropy method has been developed in the late 90's to find the optimal Importance Sampling parameters. By employing the Cross-Entropy technique, we propose a new scheme called the Merge Process with Cross-Entropy. The new scheme improves the Merge Process in nearly all classes of network; in contrast, Tree Cut and Merge with Importance Sampling scheme sees the greatest improvement in heterogeneous networks. Besides estimating the reliability of a single network, this thesis also investigates a closely related problem: estimating the difference in reliability of two very similar networks. The problem is closely linked to the applications in the areas of network optimization, network evolution, reconfiguration and recovery, for example. The fact that the probabilities of rare events are hard to estimate makes estimating their difference even more difficult. Coupled and differential sampling techniques are proposed and applied to various schemes in this thesis. They prove to be superior to the conventional independent "estimate and subtract" method. Interestingly, these concepts also lead to new ideas regarding the estimation of the reliability of networks that are similar to networks with polynomially computable reliability. / Thesis (Ph.D.)--School of Mathematical Sciences, 2005.
127

Shyness and computer-mediated communication for adolescent in Hong Kong /

Ng, Wing-yan. January 2006 (has links)
Thesis (M. Soc. Sc.)--University of Hong Kong, 2006.
128

A higher order collective classifier

Menon, Vikas. January 2009 (has links)
Thesis (M.S.)--Rutgers University, 2009. / "Graduate Program in Computer Science." Includes bibliographical references (p. 60-63).
129

The classification of e-authentication protocols for targeted applicability

Chia, Wan Yin. January 2009 (has links) (PDF)
Thesis (M.S. in Computer Science)--Naval Postgraduate School, December 2009. / Thesis Advisor(s): Fulp, J. D. ; Huffmire, Ted. "December 2009." Description based on title screen as viewed on February 01, 2010. Author(s) subject terms: Authentication protocols, taxonomy, protocol classification, protocol applicability, operating environment. Includes bibliographical references (p. 69-72). Also available in print.
130

Measurement-based traffic management for QoS guarantee in multi-service networks

Sang, Aimin. January 2001 (has links)
Thesis (Ph. D.)--University of Texas at Austin, 2001. / Vita. Includes bibliographical references. Available also from UMI Company.

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