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City University of Hong Kong
(225 results)-
White Papers
An ISP-Friendly File Distribution Protocol: Analysis, Design and Implementation
August 31, 2009, 12:00am PDT
In the past few years, P2P file distribution applications (e.g., BitTorrent) are becoming so popular that they are the dominating source of Internet traffic. This creates significant problems to...
Provided by University of Hong Kong
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White Papers
Friends or Foes: Detecting Dishonest Recommenders in Online Social Networks
May 6, 2011, 12:00am PDT
Viral marketing is becoming important due to the popularity of Online Social Networks (OSNs) and the fact that many users have integrated OSNs into their daily activities, e.g., they provide...
Provided by University of Hong Kong
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White Papers
Impact of Altruism on Opportunistic Communications
May 9, 2009, 12:00am PDT
Opportunistic networking largely relies on human-carried devices as relays to move data across the network. Human altruistic behavior is an important factor in the feasibility and performance of...
Provided by University of Hong Kong
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White Papers
NCCloud: Applying Network Coding for the Storage Repair in a Cloud-of-Clouds
January 22, 2012, 12:00am PST
To provide fault tolerance for cloud storage, recent studies propose to stripe data across multiple cloud vendors. However, if a cloud suffers from a permanent failure and loses all its data, then...
Provided by Chinese University of Hong Kong
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White Papers
Performance Analysis of Best-Effort Service in Saturated IEEE 802.16 Networks
August 5, 2009, 12:00am PDT
The IEEE 802.16 standard is a promising technology for the fourth-generation mobile networks and is being actively promoted by the WiMAX Forum, an industry-led consortium. Among the various...
Provided by City University of Hong Kong
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White Papers
Power Allocation for Multiuser Cooperative Communication Networks Under Relay Selection Degree Bounds
May 15, 2012, 12:00am PDT
This paper considers the joint power allocation and relay selection problem in multiuser cooperative communication networks, where one user can only seek a limited number of relays for...
Provided by The Chinese University of Hong Kong
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White Papers
Learning Equilibrium Play for Stochastic Parallel Gaussian Interference Channels
March 19, 2011, 12:00am PDT
Distributed power control for parallel Gaussian interference channels recently draws great interests. However, all existing works only studied this problem under deterministic communication...
Provided by The Chinese University of Hong Kong
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White Papers
Analog Network Coding in General SNR Regime: Performance of a Greedy Scheme
April 23, 2012, 12:00am PDT
The problem of maximum rate achievable with analog network coding for a unicast communication over a layered relay network with directed links is considered. A relay node performing analog network...
Provided by The Chinese University of Hong Kong
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Whitepapers
ADAM: An Automatic and Extensible Platform to Stress Test Android Anti-Virus Systems
April 30, 2012, 12:00am PDT
With the rising threat of smartphone malware, both academic community and commercial anti-virus companies proposed many methodologies and products to defend against smartphone malware. Thus, how...
Provided by The Chinese University of Hong Kong
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Whitepapers
A Cost-Based Heterogeneous Recovery Scheme for Distributed Storage Systems With RAID-6 Codes
April 9, 2012, 12:00am PDT
Modern distributed storage systems provide large-scale, fault-tolerant data storage. To reduce the probability of data unavailability, it is important to recover the lost data of any failed...
Provided by The Chinese University of Hong Kong
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Whitepapers
A Panoramic View of 3G Data/Control-Plane Traffic: Mobile Device Perspective
February 25, 2012, 12:00am PST
Users can access the Internet via 3G/4G cellular data networks using various types of user devices (e.g., smartphones, tablets, datacards). The authors conduct a detailed measurement study on the...
Provided by The Chinese University of Hong Kong
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Whitepapers
On the Speedup of Single-Disk Failure Recovery in XOR-Coded Storage Systems: Theory and Practice
March 16, 2012, 12:00am PDT
Modern storage systems stripe redundant data across multiple disks to provide availability guarantees against disk failures. One form of data redundancy is based on XOR-based erasure codes, which...
Provided by The Chinese University of Hong Kong
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Whitepapers
An Adaptive Delay-Minimized Route Design for Wireless Sensor-Actuator Networks
July 14, 2007, 12:00am PDT
Wireless Sensor-Actuator Networks (WSANs) have recently been suggested as an enhancement to the conventional sensor networks. The powerful and mobile actuators can patrol along different routes...
Provided by Chinese University of Hong Kong
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Whitepapers
LOFT: A Latency-Oriented Fault Tolerant Transport Protocol for Wireless Sensor-Actuator Networks
July 15, 2007, 12:00am PDT
Wireless sensor-actuator networks, or WSANs, refer to a group of sensors and actuators which collect data from the environment and perform application-specific actions in response. To act...
Provided by Chinese University of Hong Kong
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Whitepapers
A Game Theoretic Analysis on Incentive Mechanisms for Wireless Ad Hoc VoD Systems
April 17, 2012, 12:00am PDT
Wireless ad hoc networks enable the wireless devices to directly communicate with each other. An emerging application in such systems is video-on-demand service that can greatly reduce the content...
Provided by Chinese University of Hong Kong
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Whitepapers
Secure Overlay Cloud Storage With Access Control and Assured Deletion
June 22, 2012, 12:00am PDT
The authors can now outsource data backups off-site to third-party cloud storage services so as to reduce data management costs. However, they must provide security guarantees for the outsourced...
Provided by Chinese University of Hong Kong
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Whitepapers
Congestion Games on Weighted Directed Graphs, With Applications to Spectrum Sharing
June 5, 2012, 12:00am PDT
With the advance of complex large-scale networks, it is becoming increasingly important to understand how selfish and spatially distributed individuals will share network resources without...
Provided by Chinese University of Hong Kong
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Whitepapers
Physical-Layer Network Coding for VPN in TDM-PON
May 28, 2012, 12:00am PDT
The authors experimentally demonstrate a novel optical Physical-layer Network Coding (PNC) scheme over Time-Division Multiplexing (TDM) Passive Optical Network (PON). Full-duplex error-free...
Provided by University of Hong Kong
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Whitepapers
Utility Maximization in Peer-to-Peer Systems with Applications to Video Conferencing
July 25, 2012, 12:00am PDT
In this paper, the authors study the problem of utility maximization in P2P systems, in which aggregate application specific utilities are maximized by running distributed algorithms on P2P nodes,...
Provided by Chinese University of Hong Kong
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Whitepapers
JSCloud: Toward Remote Execution of JavaScript Code on Handheld Devices
August 21, 2012, 12:00am PDT
The authors present a generic framework, JSCloud, for the remote execution of JavaScript programs. Their work dynamically estimates whether a code partition should be executed remotely. The...
Provided by City University of Hong Kong
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Whitepapers
Voronoi-Based Nearest Neighbor Search for Multi-Dimensional Uncertain Databases
July 26, 2012, 12:00am PDT
Nearest neighbor queries are the fundamental procedures for many similarity search and location-based query applications for location-based services. In particular, a nearest-neighbor query allows...
Provided by University of Hong Kong
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Whitepapers
Design and Analysis of ISP-Friendly File Distribution Protocols
November 30, 2008, 12:00am PST
In recent years, BitTorrent-like file-swarming applications are becoming so popular that they contribute to a large percentage of the current Internet traffic. Internet Service Providers (ISPs)...
Provided by Chinese University of Hong Kong
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Whitepapers
On Detecting Malicious Behaviors in Interactive Networks: Algorithms and Analysis
November 29, 2011, 12:00am PST
Interactive networks are vulnerable to various attacks due to the existence of malicious nodes which do not comply with the network protocol so as to achieve their own purposes. For example, in a...
Provided by Chinese University of Hong Kong
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Whitepapers
A Cooperative Game Based Allocation for Sharing Data Center Networks
January 15, 2013, 12:00am PST
In current IaaS datacenters, tenants are suffering unfairness since the network bandwidth is shared in a best-effort manner. To achieve predictable network performance for rented Virtual Machines...
Provided by Chinese University of Hong Kong
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Whitepapers
On the Security and Efficiency of Content Distribution via Network Coding
May 20, 2011, 12:00am PDT
Content distribution via network coding has received a lot of attention lately. However, direct application of network coding may be insecure. In particular, attackers can inject "Bogus" data to...
Provided by Chinese University of Hong Kong
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White Papers
Approximately Optimal Trees for Group Key Management With Batch Updates
October 11, 2007, 12:00am PDT
The authors investigate the group key management problem for broad-casting applications. Previous work showed that, in handling key up-dates, batch rekeying can be more cost-effective than...
Provided by City University of Hong Kong
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White Papers
Older People Stereotypes In Hong Kong's Print Advertisements
April 18, 2009, 12:00am PDT
In response to some recent studies which suggest that the elderly are negatively portrayed in the mass media in many Western countries, this paper aims at investigating whether the same happens in...
Provided by University of Hong Kong
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White Papers
On Security Vulnerabilities of Null Data Frames in IEEE 802.11 Based WLANs
March 24, 2008, 12:00am PDT
Null data frames are a special but important type of frames in IEEE 802.11 based Wireless Local Area Networks (E.g., 802.11 WLANs). They are widely used for power management, channel scanning and...
Provided by City University of Hong Kong
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White Papers
Management And Organisational Behaviour
March 20, 2008, 12:00am PDT
The module aims to provide an understanding of the practical and professional issues associated with organisational behavior and how these relate to effective management practice. The module...
Provided by City University of Hong Kong
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White Papers
Alliance Partners And Firm Performance: Resource Complementarity And Status Association
March 5, 2009, 12:00am PST
Bridging the resource-based view and the institutional perspective, this study explores the performance consequences of firms' alliance partner selections by examining the interactions of resource...
Provided by City University of Hong Kong
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White Papers
Rendezvous Planning in Mobility-Assisted Wireless Sensor Networks
September 27, 2007, 12:00am PDT
Recent research shows that significant energy saving can be achieved in wireless sensor networks by using Mobile Elements (MEs) capable of carrying data mechanically. However, the low movement...
Provided by City University of Hong Kong
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White Papers
Mobility-Assisted Spatiotemporal Detection in Wireless Sensor Networks
April 5, 2008, 12:00am PDT
Wireless Sensor Networks (WSNs) deployed for mission-critical applications face the fundamental challenge of meeting stringent spatiotemporal performance requirements using nodes with limited...
Provided by University of Hong Kong
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White Papers
A Relational-XML Data Warehouse for Data Aggregation With SQL and XQuery
February 20, 2008, 12:00am PST
Integration of multiple data sources is becoming increasingly important for enterprises that cooperate closely with their partners for e-commerce. OLAP enables analysts and decision makers fast...
Provided by City University of Hong Kong
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White Papers
Managing Uncertainty of XML Schema Matching
June 23, 2009, 12:00am PDT
Despite of advances in machine learning technologies, a schema matching result between two database schemas (e.g., those derived from COMA++) is likely to be imprecise. In particular, numerous...
Provided by University of Hong Kong
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White Papers
XTOPO: An XML-Based Topology for Information Highway on the Internet
September 14, 2008, 12:00am PDT
The need for interoperation and data exchange through the Internet makes XML (eXtensible Markup Language) a dominant standard language. Much work have been done on translating relational data into...
Provided by City University of Hong Kong
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White Papers
Holistic Twig Joins on Indexed XML Documents
January 1, 2010, 12:00am PST
Finding all the occurrences of a twig pat-tern specified by a selection predicate on multiple elements in an XML document is a core operation for efficient evaluation of XML queries. Holistic twig...
Provided by Chinese University of Hong Kong
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White Papers
On the Detection of Signaling DoS Attacks on 3G/WiMax Wireless Networks
April 27, 2009, 12:00am PDT
Third Generation (3G) wireless networks based on the CDMA2000 and UMTS standards are now increasingly being deployed throughout the world. Because of their complex signaling and relatively limited...
Provided by Chinese University of Hong Kong
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White Papers
Degree Bounded Network Design With Metric Costs
August 12, 2008, 12:00am PDT
Given a complete undirected graph, a cost function on edges and a degree bound B, the degree bounded network design problem is to find a minimum cost simple subgraph with maximum degree B...
Provided by Chinese University of Hong Kong
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White Papers
A Risk Assessment Framework for Mobile Payments
June 12, 2008, 12:00am PDT
Progress in Mobile Commerce is heavily dependent upon effective and reliable payment mechanisms. Security concerns loom as a major impediment to widespread and rapid adoption, and there is...
Provided by University of Hong Kong
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White Papers
Guideline to Back Up Your Computer and Important Files
December 16, 2008, 12:00am PST
To backup is to make spare copies of file and store them separately to the originals. In the world of computers loss of data can be devastating, and while there are possibilities for recovery of...
Provided by City University of Hong Kong
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White Papers
Hong Kong and Singapore: Two Models of Telecommunications Regulation?
May 27, 2008, 12:00am PDT
This paper examines how telecommunications regulation in Hong Kong and Singapore has evolved since the 1970s and in particular, how the boundaries between the telecommunications and broadcasting...
Provided by University of Hong Kong
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White Papers
DCAR: Distributed Coding-Aware Routing in Wireless Networks
March 23, 2008, 12:00am PDT
The practical network coding system proposed in has two fundamental limitations like the coding opportunity is crucially dependent on the established routes; the coding structure is limited within...
Provided by Chinese University of Hong Kong
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White Papers
How Does Financial Reporting Quality Relate To Investment Efficiency?
April 1, 2009, 12:00am PDT
Prior evidence suggests that higher quality financial reporting improves capital investment efficiency by reducing information asymmetries that give rise to frictions such as moral hazard and...
Provided by University of Hong Kong
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White Papers
Peer Clustering and Firework Query Model
January 1, 2010, 12:00am PST
The importance of distributed information sharing systems has been confirmed by the appearance and popularity of P2P applications such as Gnutella and Napster. One problem that the users face with...
Provided by Chinese University of Hong Kong
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White Papers
A Testbed for TCP in Heterogeneous Wired/Wireless Networks
February 25, 2010, 12:00am PST
Transmission Control Protocol (TCP) design in heterogeneous wired/wireless networks is challenging due to packet reordering and error-prone channels. The paper has implemented a testbed for...
Provided by University of Hong Kong
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White Papers
Synthesizing System Integration Requirements Model Fragments
July 19, 2009, 12:00am PDT
Systems integration is an enduring issue in organizations. Many organizations have often been faced with the predicament of managing large and complex IT infrastructures accumulated over the...
Provided by City University of Hong Kong
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White Papers
Optimization Techniques in Wireless Communications
September 6, 2009, 12:00am PDT
This paper collects several research results on the use of optimization techniques in wireless communications. Recent advances in linear and nonlinear optimization facilitate progress in many...
Provided by Chinese University of Hong Kong
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White Papers
Enhancing Wireless TCP: A Serialized-Timer Approach
August 13, 2009, 12:00am PDT
In wireless networks, TCP performs unsatisfactorily since packet reordering and random losses may be falsely interpreted as congestive losses. This causes TCP to trigger fast retransmission and...
Provided by University of Hong Kong
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White Papers
Turning Mobile Phones Into a Mobile Quiz Platform to Challenge Players' Knowledge: An Experience Report
March 10, 2008, 12:00am PDT
In the past few years, many new mobile technologies including the 3G, WiFi or mobileTV have created unprecedented learning opportunities on mobile devices. Furthermore, such technologies...
Provided by University of Hong Kong
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White Papers
RFID-Enable Real-Time Multi-Experiment Training Center Management System
June 1, 2009, 12:00am PDT
This paper proposes a real-time web system based on RFID, B/S+C/S (Browser/Server + Client/Server) module and wireless communication so-called 433MHz, all of which are used to solve some crucial...
Provided by University of Hong Kong
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