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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.
161

Improving capacity and fairness by elimination of exposed and hidden nodes in 802.11 networks.

January 2005 (has links)
Jiang Libin. / Thesis (M.Phil.)--Chinese University of Hong Kong, 2005. / Includes bibliographical references (leaves 84-87). / Abstracts in English and Chinese. / Chapter Chapter 1 --- Introduction --- p.1 / Chapter 1.1 --- Motivations and Contributions --- p.1 / Chapter 1.2 --- Related Works --- p.3 / Chapter 1.3 --- Organization of the Thesis --- p.4 / Chapter Chapter 2 --- Background --- p.6 / Chapter 2.1 --- IEEE 802.11 --- p.6 / Chapter 2.1.1 --- Basics of 802.11 Standard --- p.6 / Chapter 2.1.2 --- Types of Networks --- p.10 / Chapter 2.1.3 --- Automatic Repeat request (ARQ) in 802.11b --- p.11 / Chapter 2.2 --- Hidden- and Exposed-node Problems --- p.15 / Chapter Chapter 3 --- Physical Interference Constraints and Protocol Constraints --- p.19 / Chapter 3.1 --- Protocol-independent Physical Interference Constraints --- p.19 / Chapter 3.2 --- Protocol-specific Physical Interference Constraints --- p.21 / Chapter 3.3 --- Protocol Collision-Prevention Constraints in 802.11 --- p.22 / Chapter 3.3.1 --- Transmitter-Side Carrier-Sensing Constraints --- p.22 / Chapter 3.3.2 --- Receiver-Side Carrier Sensing Constraints --- p.24 / Chapter Chapter 4 --- Formal Definitions of EN and HN Using a Graph Model --- p.27 / Chapter Chapter 5 --- Selective Disregard of NAVs (SDN) --- p.36 / Chapter 5.1 --- SDN. I - Turning off Physical Carrier Sensing and Using Receiver Restart Mode --- p.38 / Chapter 5.2 --- SDN.II - Selective Disregard of NAV (SDN) --- p.38 / Chapter 5.3 --- SDN.III - Constructing s-graph using Power Exchange Algorithm (PE) --- p.40 / Chapter Chapter 6 --- EN and Its Impact on Scalability --- p.42 / Chapter 6.1 --- Validation of SDN by NS-2 Simulations --- p.43 / Chapter 6.2 --- Scalability of SDN --- p.46 / Chapter 6.3 --- Non-Scalability of 802.11 --- p.47 / Chapter Chapter 7 --- Hidden-node Free Design (HFD) --- p.51 / Chapter 7.1 --- HFD for IEEE 802.11 Basic Access Mode --- p.52 / Chapter 7.1.1 --- HFD for basic access mode --- p.52 / Chapter 7.1.2 --- Proof of the HN-free property --- p.56 / Chapter 7.2 --- HFD for IEEE 802.11 RTS/CTS Access Mode --- p.59 / Chapter Chapter 8 --- Performance Evaluation of HFD --- p.62 / Chapter 8.1 --- HFD for Basic Access Mode --- p.62 / Chapter 8.2 --- HFD for RTS/CTS Access Mode --- p.64 / Chapter Chapter 9 --- Combination of SDN and HFD --- p.68 / Chapter Chapter 10 --- Conclusion --- p.75 / Appendices --- p.78 / References --- p.84
162

Multi-destination control protocol: a new distributed scheduling protocol for optical flow switching network. / CUHK electronic theses & dissertations collection

January 2011 (has links)
OFS provisions bandwidth in the granularity of one wavelength. With such a coarse granularity, most applications including video download, HDTV, 3D movie, and 3D TV etc. will have very short flow sizes, in the order of seconds or even sub-second, which brings challenges to the utilization efficiency of bandwidth capacity. In this thesis we study the performance of OFS for short flows. The constraint of network resources is investigated. The effect of destination and path blocking is studied. A distributed scheduling protocol called Multi-Destination Control Protocol (MDCP) is proposed to deal with such constraint. Both single wavelength and multi-wavelength configurations are studied and characterized. Simulation results demonstrate that MDCPcan improve the OFS network throughput significantly and can be as much as eighty to one hundred percent for a single-wavelength OFS network. Even for an OFS network with four wavelengths, the throughput improvement can still approach 40%. / The Internet traffic has been growing tremendously. China Telecom predicts that the compound annual growth rate of IP traffic for the next decade is at 56% - 80% and the backbone capacity will grow by another two orders of magnitudes. Furthermore, the power consumption incurred by the next generation of huge electronic IP packet switching routers in the backbone will exceed gigawatts. In view of the grave enviromnental concerns, there is a great need for a more efficient way of transporting and switching the bits. This thesis investigates a new all-optical networking technology called optical flow switching (OFS). OFS bypasses electronic routers, and provides end-to-end transparent connections, thus taking full advantage of the enormous transmission capacity of optical networks and enjoying the extremely low error rate of transparent data transmission. The most important point about OFS is that it reduces the electrical power consumption by off-loading the huge electronic routers, which could be a major constraint for future Internet growth. Unlike many other exotic all-optical switching technologies, OFS is immediately deployable using the current optical technologies, Therefore OFS is very attractive for the next generation optical networks. / Qian, Zhengfeng. / Adviser: Kwok-wai Cheung. / Source: Dissertation Abstracts International, Volume: 73-04, Section: B, page: . / Thesis (Ph.D.)--Chinese University of Hong Kong, 2011. / Includes bibliographical references (leaves 113-118). / 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, [201-] System requirements: Adobe Acrobat Reader. Available via World Wide Web. / Abstract also in Chinese.
163

MMPTCP : a novel transport protocol for data centre networks

Kheirkhah Sabetghadam, Morteza January 2016 (has links)
Modern data centres provide large aggregate capacity in the backbone of networks so that servers can theoretically communicate with each other at their maximum rates. However, the Transport Control Protocol (TCP) cannot efficiently use this large capacity even if Equal-Cost Multi-Path (ECMP) routing is enabled to exploit the existence of parallel paths. MultiPath TCP (MPTCP) can effectively use the network resources of such topologies by performing fast distributed load balancing. MPTCP is an appealing technique for data centres that are very dynamic in nature. However, it is ill-suited for handling short flows since it increases their flow completion time. To mitigate these problems, we propose Maximum MultiPath TCP (MMPTCP), a novel transport protocol for modern data centres. Unlike MPTCP, it provides high performance for all network flows. It also decreases the bursty nature of data centres, which is essentially rooted in traffic patterns of short flows. MMPTCP achieves these nice features by randomising a flow's packets via all parallel paths to a destination during the initial phase of data transmission until a certain amount of data is delivered. It then switches to MPTCP with several subflows in which data transmission is governed by MPTCP congestion control. In this way, short flows are delivered very fast via the initial phase only, and long flows are delivered by MPTCP with several subflows. We evaluate MMPTCP in a FatTree topology under various network conditions. We found that MMPTCP decreases the loss rate of all the links throughout the network and helps competing flows to achieve a better performance. Unlike MPTCP with a fixed number of subflows, MMPTCP offers high burst tolerance and low-latency for short flows while it maintains high overall network utilisation. MMPTCP is incrementally deployable in existing data centres because it does not require any modification to the network and application layers.
164

Trusted content-based publish/subscribe trees

Naicken, Stephen Murugapa January 2012 (has links)
Publish/Subscribe systems hold strong assumptions of the expected behaviour of clients and routers, as it is assumed they all abide by the matching and routing protocols. Assumptions of implicit trust between the components of the publish/subscribe infrastructure are acceptable where the underlying event distribution service is under the control of a single or multiple co-operating administrative entities and contracts between clients and these authorities exist, however there are application contexts where these presumptions do not hold. In such environments, such as ad hoc networks, there is the possibility of selfish and malicious behaviour that can lead to disruption of the routing and matching algorithms. The most commonly researched approach to security in publish/subscribe systems is role-based access control (RBAC). RBAC is suitable for ensuring confidentiality, but due to the assumption of strong identities associated with well defined roles and the absence of monitoring systems to allow for adaptable policies in response to the changing behaviour of clients, it is not appropriate for environments where: identities can not be assigned to roles in the absence of a trusted administrative entity; long-lived identities of entities do not exist; and where the threat model consists of highly adaptable malicious and selfish entities. Motivated by recent work in the application of trust and reputation to Peer-to-Peer networks, where past behaviour is used to generate trust opinions that inform future transactions, we propose an approach where the publish/subscribe infrastructure is constructed and re-configured with respect to the trust preferences of clients and routers. In this thesis, we show how Publish/Subscribe trees (PSTs) can be constructed with respect to the trust preferences of publishers and subscribers, and the overhead costs of event dissemination. Using social welfare theory, it is shown that individual trust preferences over clients and routers, which are informed by a variety of trust sources, can be aggregated to give a social preference over the set of feasible PSTs. By combining this and the existing work on PST overheads, the Maximum Trust PST with Overhead Budget problem is defined and is shown to be in NP-complete. An exhaustive search algorithm is proposed that is shown to be suitable only for very small problem sizes. To improve scalability, a faster tabu search algorithm is presented, which is shown to scale to larger problem instances and gives good approximations of the optimal solutions. The research contributions of this work are: the use of social welfare theory to provide a mechanism to establish the trustworthiness of PSTs; the finding that individual trust is not interpersonal comparable as is considered to be the case in much of the trust literature; the Maximum Trust PST with Overhead Budget problem; and algorithms to solve this problem.
165

Making it personal : web users and algorithmic personalisation

Kant, Tanya January 2016 (has links)
This thesis investigates how web users negotiate and engage with contemporary algorithmic personalisation practices; that is, practices which seek to infer (via data tracking mechanisms and other algorithmic means) a user's habits, preferences or identity categorisations in order to ‘make personal' some component of that user's web experience. Drawing on thirty-six semi-structured interviews, I employ a qualitative methodology that seeks to bridge the gap between critical theorisations of algorithmic personalisation and the negotiations of web users themselves who encounter algorithmic personalisation in everyday life. To do this I focus on three sites of investigation. I first examine privacy tool Ghostery and the ways in which Ghostery users' negotiate their positions as data-tracked subjects, especially in relation to privacy, knowledge and their sense of self. I then investigate Facebook's autoposting apps as examples of algorithmic personalisation that act on the user's behalf, and draw on the accounts of Facebook app users to explore themes such as identity performance, autonomous control and algorithmic governance. Finally I examine users' engagement with the ‘predictive powers' (Google Now, 2014) of the personalisation app Google Now, specifically in regards to notions of user trust, expectation and speculation. My critical enquiries produced a number of themes that tie this thesis together. Central were: the epistemic uncertainties that emerged as trust and anxiety in participant responses; the implications for a performative understanding of selfhood when algorithmic personalisation intervenes in user self-articulation; the (asymmetrical) data-for-services exchange which web users must negotiate with commercial data trackers; and the struggle for autonomy between user and system that algorithmic personalisation creates. The thesis also argues that algorithmic personalisation demands that web users' identities be constituted as both a stable and fixable ‘single identity', but also as recursively reworkable, dividualised and endlessly expressable entities.
166

Participant Domain Name Token Profile for security enhancements supporting service oriented architecture

Cheong, Chi Po January 2014 (has links)
This research proposes a new secure token profile for improving the existing Web Services security standards. It provides a new authentication mechanism. This additional level of security is important for the Service-Oriented Architecture (SOA), which is an architectural style that uses a set of principles and design rules to shape interacting applications and maintain interoperability. Currently, the market push is towards SOA, which provides several advantages, for instance: integration with heterogeneous systems, services reuse, standardization of data exchange, etc. Web Services is one of the technologies to implement SOA and it can be implemented using Simple Object Access Protocol (SOAP). A SOAP-based Web Service relies on XML for its message format and common application layer protocols for message negotiation and transmission. However, it is a security challenge when a message is transmitted over the network, especially on the Internet. The Organization for Advancement of Structured Information Standards (OASIS) announced a set of Web Services Security standards that focus on two major areas. “Who” can use the Web Service and “What” are the permissions. However, the location or domain of the message sender is not authenticated. Therefore, a new secure token profile called: Participant Domain Name Token Profile (PDNT) is created to tackle this issue. The PDNT provides a new security feature, which the existing token profiles do not address. Location-based authentication is achieved if adopting the PDNT when using Web Services. In the performance evaluation, PDNT is demonstrated to be significantly faster than other secure token profiles. The processing overhead of using the PDNT with other secure token profiles is very small given the additional security provided. Therefore all the participants can acquire the benefits of increased security and performance at low cost.
167

Inter-domain routing: pricing policy and route selection using neural networks.

January 1997 (has links)
by Wong Leung-Chung Chris. / Thesis (M.Phil.)--Chinese University of Hong Kong, 1997. / Includes bibliographical references (leaves 86-[92]). / Chapter 1 --- Introduction --- p.1 / Chapter 1.1 --- Routing Overview --- p.2 / Chapter 1.2 --- Routing in the Internet --- p.5 / Chapter 1.2.1 --- Inter-Domain Routing --- p.6 / Chapter 1.2.2 --- Intra-Domain Routing --- p.7 / Chapter 1.2.3 --- The Future Trend --- p.7 / Chapter 2 --- Inter-Domain Routing --- p.9 / Chapter 2.1 --- Inter-Domain Routing Protocols --- p.9 / Chapter 2.1.1 --- Exterior Gateway Protocol (EGP) --- p.10 / Chapter 2.1.2 --- Border Gateway Protocol (BGP) --- p.11 / Chapter 2.1.3 --- Inter-Domain Policy Routing (IDPR) --- p.12 / Chapter 2.1.4 --- Other Protocols --- p.13 / Chapter 2.2 --- The Need for Pricing on Inter-Domain Routing Protocols --- p.13 / Chapter 2.3 --- Pricing Scheme on the Inter-Domain level --- p.15 / Chapter 2.4 --- Routing Protocols to Support Pricing on the Internet --- p.16 / Chapter 2.4.1 --- Routing Towards Multiple-Additive Metrics --- p.16 / Chapter 2.4.2 --- "Network Model, Notations and Assumptions" --- p.16 / Chapter 2.4.3 --- The Problem Statement --- p.18 / Chapter 3 --- Application of Neural Nets in Route Selection --- p.20 / Chapter 3.1 --- Neural Network (NN) Overview --- p.20 / Chapter 3.1.1 --- Brief History on Neural Network Research --- p.20 / Chapter 3.1.2 --- Definition of Neural Network --- p.21 / Chapter 3.1.3 --- Neural Network Architectures --- p.22 / Chapter 3.1.4 --- Transfer Fucntion of a Neuron --- p.24 / Chapter 3.1.5 --- Learning Methods --- p.25 / Chapter 3.1.6 --- Applications in Telecommunications --- p.26 / Chapter 3.2 --- Review on the Applications of Neural Networks in Packet Routing --- p.27 / Chapter 3.2.1 --- The JEB Branch --- p.27 / Chapter 3.2.2 --- The Hopfield/Energy Minimization Branch (HEM) --- p.29 / Chapter 3.2.3 --- Supervised Learning (SL) --- p.34 / Chapter 3.3 --- Discussions --- p.35 / Chapter 4 --- Route Selection as “Link-state´ح Classification --- p.36 / Chapter 4.1 --- Multi-Layer Feedforward Network (MLFN) --- p.37 / Chapter 4.1.1 --- Function Approximation Power of MLFN --- p.38 / Chapter 4.1.2 --- Choosing MLFN parameters..........´ب --- p.40 / Chapter 4.1.3 --- Trailing a MLFN --- p.41 / Chapter 4.2 --- The Utility Function --- p.43 / Chapter 4.3 --- The Neural Network Architecture --- p.46 / Chapter 4.3.1 --- Routing Graph Representation with Successor Sequence Table (SST) --- p.46 / Chapter 4.3.2 --- The Neural Network Layout --- p.52 / Chapter 4.3.3 --- How the Neural Network Controller Works --- p.55 / Chapter 4.3.4 --- Training --- p.56 / Chapter 4.4 --- Simulation --- p.56 / Chapter 4.4.1 --- Performance Parameters --- p.56 / Chapter 4.4.2 --- Simulation Results --- p.57 / Chapter 4.5 --- Conclusions and Discussions --- p.70 / Chapter 5 --- Route Selection as Energy Minimization - A Theoretical Study --- p.73 / Chapter 5.1 --- The Hopfield/Tank NN Model --- p.73 / Chapter 5.2 --- Boltzman's Machine --- p.76 / Chapter 5.3 --- Boltzman's Machine Model for Multiple-Metrices Routing --- p.79 / Chapter 5.4 --- Conclusions --- p.82 / Chapter 6 --- Conclusions --- p.84 / Bibliography --- p.86
168

Design of smart card enabled protocols for micro-payment and rapid application development builder for e-commerce.

January 2001 (has links)
by Tsang Hin Chung. / Thesis (M.Phil.)--Chinese University of Hong Kong, 2001. / Includes bibliographical references (leaves 118-124). / Abstracts in English and Chinese. / Chapter 1 --- Introduction --- p.1 / Chapter 1.1 --- Authentication and Transaction Protocol --- p.2 / Chapter 1.2 --- E-Commerce Enabler --- p.3 / Chapter 2 --- Literature Review --- p.4 / Chapter 2.1 --- Cryptographic Preliminaries --- p.4 / Chapter 2.1.1 --- One-Way Hash Function --- p.4 / Chapter 2.1.2 --- Triple DES --- p.5 / Chapter 2.1.3 --- RSA --- p.7 / Chapter 2.1.4 --- Elliptic Curve --- p.8 / Chapter 2.2 --- Smart Cards --- p.8 / Chapter 2.2.1 --- Smart Card Operating Systems --- p.11 / Chapter 2.2.2 --- Java Card --- p.12 / Chapter 2.3 --- Authentication Protocol --- p.14 / Chapter 2.3.1 --- Properties --- p.15 / Chapter 2.3.2 --- Survey --- p.16 / Chapter 2.4 --- Transaction Protocol --- p.19 / Chapter 2.5 --- BAN Logic --- p.20 / Chapter 2.5.1 --- Notation --- p.20 / Chapter 2.5.2 --- Logical Postulates --- p.22 / Chapter 2.5.3 --- Protocol Analysis --- p.25 / Chapter 3 --- Authentication Protocol --- p.26 / Chapter 3.1 --- Formulation of Problem --- p.26 / Chapter 3.2 --- The New Idea --- p.27 / Chapter 3.3 --- Assumptions --- p.29 / Chapter 3.4 --- Trust Model --- p.29 / Chapter 3.5 --- Protocol --- p.30 / Chapter 3.5.1 --- Registration --- p.30 / Chapter 3.5.2 --- Local Authentication --- p.31 / Chapter 3.5.3 --- Remote Authentication --- p.33 / Chapter 3.5.4 --- Silent Key Distribution Scheme --- p.35 / Chapter 3.5.5 --- Advantages --- p.37 / Chapter 3.6 --- BAN Logic Analysis --- p.38 / Chapter 3.7 --- Experimental Evaluation --- p.43 / Chapter 3.7.1 --- Configuration --- p.44 / Chapter 3.7.2 --- Performance Analysis --- p.45 / Chapter 4 --- Transaction Protocol --- p.51 / Chapter 4.1 --- Assumptions --- p.52 / Chapter 4.2 --- Protocol --- p.55 / Chapter 4.3 --- Conflict Resolution Policy --- p.58 / Chapter 4.4 --- Justifications --- p.58 / Chapter 4.5 --- Experimental Evaluation --- p.59 / Chapter 4.5.1 --- Configuration --- p.59 / Chapter 4.5.2 --- Performance Analysis --- p.60 / Chapter 5 --- E-Commerce Builder --- p.65 / Chapter 5.1 --- Overview --- p.66 / Chapter 5.2 --- Design of Smart RAD --- p.68 / Chapter 5.2.1 --- Mechanism --- p.68 / Chapter 5.2.2 --- Java Card Layer --- p.69 / Chapter 5.2.3 --- Host Layer --- p.71 / Chapter 5.2.4 --- Server Layer --- p.72 / Chapter 5.3 --- Implementation --- p.73 / Chapter 5.3.1 --- Implementation Reflection --- p.73 / Chapter 5.3.2 --- Implementation Issues --- p.76 / Chapter 5.4 --- Evaluation --- p.77 / Chapter 5.5 --- An Application Example: Multi-MAX --- p.79 / Chapter 5.5.1 --- System Model --- p.79 / Chapter 5.5.2 --- Design Issues --- p.80 / Chapter 5.5.3 --- Implementation Issues --- p.80 / Chapter 5.5.4 --- Evaluation --- p.84 / Chapter 5.6 --- Future Work --- p.89 / Chapter 6 --- Conclusion --- p.91 / Chapter A --- Detail Experimental Result --- p.93 / Chapter A.1 --- Authentication Time Measurement --- p.94 / Chapter A.2 --- On-Card and Off-Card Computation Time in Authentication --- p.95 / Chapter A.3 --- Authentication Time with Different Servers --- p.96 / Chapter A.4 --- Transaction Time Measurement --- p.97 / Chapter A.5 --- On-card and Off-card Computation Time in Transaction --- p.97 / Chapter B --- UML Diagram --- p.99 / Chapter B.1 --- Package cuhk.cse.demo.applet --- p.99 / Chapter B.2 --- Package cuhk.cse.demo.client --- p.105 / Chapter B.3 --- Package server --- p.110 / Chapter C --- Glossary and Abbreviation --- p.115 / Bibliography --- p.118
169

A multiple access protocol of carrier-sense multiple access with collision avoidance using pilot tone technique on passive optical networks. / CSMA/CA using pilot tone on PON

January 2003 (has links)
Jorden Yeong-Tswen, Tse. / Thesis (M.Phil.)--Chinese University of Hong Kong, 2003. / Includes bibliographical references (leaves 76-76). / Abstracts in English and Chinese. / ACKNOWLEDGEMENTS --- p.2 / ABSTRACT --- p.3 / 摘要 --- p.4 / CONTENTS --- p.5 / Chapter CHAPTER 1: --- INTRODUCTION --- p.8 / Chapter 1.1. --- First Mile Evolution --- p.8 / Chapter 1.2. --- Access: Passive Optical Network (PON) --- p.10 / Chapter 1.2.1. --- ATM-PON (APON) --- p.13 / Chapter 1.2.2. --- Ethernet PON (EPON) --- p.14 / Chapter 1.3. --- Problem Definition and Possible Solutions --- p.16 / Chapter 1.3.1. --- Wavelength Division Multiplexing (WDM) --- p.17 / Chapter 1.3.2. --- Time Division Multiplexing (TDM) --- p.18 / Chapter 1.3.3. --- Sub-carrier Multiplexing (SCM) & Frequency Division Multiplexing (FDM) --- p.20 / Chapter 1.3.4. --- Code Division Multi Access (CDMA) --- p.20 / Chapter 1.4. --- Thesis Organization --- p.20 / Chapter CHAPTER 2: --- BACKGROUND --- p.22 / Chapter 2.1. --- EPON Solution:- MPCP --- p.22 / Chapter 2.2. --- CSMA/CD on PON --- p.26 / Chapter 2.3. --- Motivation --- p.28 / Chapter CHAPTER 3: --- CSMA/CA PROTOCOL USING PILOT TONE ON PON --- p.29 / Chapter 3.1. --- Basic Protocol Description --- p.29 / Chapter 3.1.1. --- With No Contention --- p.31 / Chapter 3.1.2. --- With Contention --- p.32 / Chapter 3.1.3. --- With Contention and Winner --- p.33 / Chapter 3.2. --- Simulation --- p.35 / Chapter 3.2.1. --- Effect of Loading on Network Utilization --- p.37 / Chapter 3.2.2. --- Effect of Network Size on Utilization --- p.39 / Chapter 3.2.3. --- Delay Performance --- p.41 / Chapter 3.2.4. --- Effect of Distance from Remote Node --- p.44 / Chapter 3.2.5. --- Effect of Maximum Packet Duration on Utilization and Delay --- p.45 / Chapter 3.3. --- Conclusions --- p.47 / Chapter CHAPTER 4: --- PROTOCOL ENHANCEMENT ON VARIOUS ASPECTS --- p.48 / Chapter 4.1. --- Utilization Enhancement --- p.48 / Chapter 4.1.1. --- Improvement on Network Utilization --- p.50 / Chapter 4.1.2. --- Network Delay Performance --- p.52 / Chapter 4.1.3. --- Conclusions --- p.53 / Chapter 4.2. --- Capture Effect --- p.53 / Chapter 4.2.1. --- Solution by Varying Ts --- p.54 / Chapter 4.2.2. --- Simulations --- p.55 / Chapter 4.2.3. --- Conclusions --- p.58 / Chapter 4.3. --- Introducing Cos to existing network --- p.59 / Chapter 4.3.1. --- Principle --- p.59 / Chapter 4.3.2. --- Simulation Model --- p.60 / Chapter 4.3.3. --- Utilization Performance --- p.61 / Chapter 4.3.4. --- Delay Performance --- p.64 / Chapter 4.3.5. --- Conclusions --- p.68 / Chapter CHAPTER 5: --- CONCLUSIONS --- p.69 / Chapter 5.1. --- Thesis Summary --- p.69 / Chapter 5.2. --- Future Work --- p.71 / REFERENCES --- p.73
170

Mathematical modeling of incentive policies in P2P systems.

January 2009 (has links)
Zhao, Qiao. / Thesis (M.Phil.)--Chinese University of Hong Kong, 2009. / Includes bibliographical references (leaves 35-36). / Abstracts also in Chinese. / Abstract --- p.i / Acknowledgement --- p.v / Chapter 1 --- Introduction --- p.1 / Chapter 2 --- Model Description --- p.3 / Chapter 2.1 --- An Incentive Model for P2P Networks --- p.3 / Chapter 2.2 --- Learning Models for P2P Networks --- p.5 / Chapter 2.2.1 --- Current-best Learning Model (CBLM) --- p.5 / Chapter 2.2.2 --- Opportunistic Learning Model (OLM) --- p.6 / Chapter 2.3 --- Incentive Policies for P2P Networks --- p.7 / Chapter 2.3.1 --- Mirror Incentive Policy Vmirror --- p.8 / Chapter 2.3.2 --- Proportional Incentive Policy Vprop --- p.9 / Chapter 2.3.3 --- Linear Incentive Policy Class CLIP --- p.9 / Chapter 2.4 --- Performance and Robustness of Incentive Policies --- p.10 / Chapter 2.4.1 --- Robustness Analysis of Mirror Incentive Policy using the current-best learning method --- p.10 / Chapter 2.4.2 --- Robustness Analysis of Mirror Incentive Policy using the opportunistic learning method --- p.12 / Chapter 2.4.3 --- Robustness Analysis of Proportional Incentive Policy Using the current-best learning method --- p.12 / Chapter 2.4.4 --- Robustness Analysis of Proportional Incentive Policy Using the opportunistic learning method --- p.13 / Chapter 2.4.5 --- Robustness Analysis for Incentive Protocol in the Linear Incentive Class --- p.14 / Chapter 2.5 --- Connection with Evolutionary Game Theory --- p.17 / Chapter 3 --- Performance Evaluation --- p.21 / Chapter 3.1 --- Performance and Robustness of the Mirror Incentive Policy (Pmirror): --- p.21 / Chapter 3.2 --- Performance and Robustness of the Proportional Incentive Policy {Pprop): --- p.23 / Chapter 3.3 --- Performance and Robustness of incentive policy in the Linear Incentive Class (CLIP): --- p.24 / Chapter 3.4 --- The Effect of Non-adaptive Peers: --- p.25 / Chapter 4 --- Adversary Effect of Altruism --- p.29 / Chapter 4.1 --- The Effect of Protocol Cost --- p.29 / Chapter 4.2 --- The Tradeoff between Altruism and System Robustness --- p.30 / Chapter 5 --- Related Work --- p.33 / Chapter 6 --- Conclusion --- p.34 / Bibliography --- p.35

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