Open Access. Powered by Scholars. Published by Universities.®

Digital Commons Network™

Open Access. Powered by Scholars. Published by Universities.®

Singapore Management University

Discipline
Keyword
Publication Year
Publication
Publication Type
File Type

Articles 20131 - 20160 of 23256

Full-Text Articles in Entire DC Network

An Examination Of Psychometric Bias Due To Retesting On Cognitive Ability Tests In Selection Settings, Filip Lievens, Charlie L. Reeve, Eric D. Heggestad Nov 2007

An Examination Of Psychometric Bias Due To Retesting On Cognitive Ability Tests In Selection Settings, Filip Lievens, Charlie L. Reeve, Eric D. Heggestad

Research Collection Lee Kong Chian School Of Business

Using a latent variable approach, the authors examined whether retesting on a cognitive ability measure resulted in measurement and predictive bias. A sample of 941 candidates completed a cognitive ability 14 test in a high-stakes context. Results of both the within-group between-occasions comparison and the between-groups within-occasion comparison indicated that no measurement bias existed during the initial testing but that retesting induced both measurement and predictive bias. Specifically, the results suggest that the factor underlying the retest scores was less saturated with g and more associated with memory than the latent factor underlying initial test scores and that these changes …

Go to article

Technological Knowledge, Product Relatedness, And Parent Control: The Effect On Ijv Survival, Dean Xu, Jane W. Lu Nov 2007

Technological Knowledge, Product Relatedness, And Parent Control: The Effect On Ijv Survival, Dean Xu, Jane W. Lu

Research Collection Lee Kong Chian School Of Business

This article examines the relationships among parent firm technological knowledge, parent-IJV product relatedness, parent control over the IJV, and IJV survival. Combining the knowledge-based perspective and institutional theory, we argue that parent control itself does not necessarily lead to higher IN survival; it contributes to IN survival when the parent firm has a high level of technological knowledge, and when the IJV is product-related to this parent. Results obtained from 1038 Japanese IJVs based in China indicate that both equity control and managerial control of a Japanese parent had a positive interaction effect, with the parent's technological knowledge, on IN …

Go to article

Procedural Fairness, Outcome Favorability, And Judgments Of An Authority's Responsibility, Joel Brockner, Ariel Y. Fishman, Jochen Reb, Barry M. Goldman, Scott Spiegel, Charlee Garden Nov 2007

Procedural Fairness, Outcome Favorability, And Judgments Of An Authority's Responsibility, Joel Brockner, Ariel Y. Fishman, Jochen Reb, Barry M. Goldman, Scott Spiegel, Charlee Garden

Research Collection Lee Kong Chian School Of Business

Fairness theory (R. Folger & R. Cropanzano, 1998, 2001) postulates that, particularly in the face of unfavorable outcomes, employees judge an organizational authority to be more responsible for their outcomes when the authority exhibits lower procedural fairness. Three studies lent empirical support to this notion. Furthermore, 2 of the studies showed that attributions of responsibility to the authority mediated the relationship between the authority's procedural fairness and employees' reactions to unfavorable outcomes. The findings (a) provide support for a key assumption of fairness theory, (b) help to account for the pervasive interactive effect of procedural fairness and outcome favorability on …

Go to article

Monitoring: Which Institutions Matter?, Xia Chen, Jarrad Harford, Kai Li Nov 2007

Monitoring: Which Institutions Matter?, Xia Chen, Jarrad Harford, Kai Li

Research Collection School Of Accountancy

Within a cost–benefit framework, we hypothesize that independent institutions with long-term investments will specialize in monitoring and influencing efforts rather than trading. Other institutions will not monitor. Using acquisition decisions to reveal monitoring, we show that only concentrated holdings by independent long-term institutions are related to post-merger performance. Further, the presence of these institutions makes withdrawal of bad bids more likely. These institutions make long-term portfolio adjustments rather than trading for short-term gain and only sell in advance of very bad outcomes. Examining total institutional holdings or even concentrated holdings by other types of institutions masks important variation in the …

Go to article

The Change In Corporate Transparency Of Korean Firms After The Asian Financial Crisis: An Analysis Using Analysts' Forecast Data, Jinho Chang, Young Jun Cho, Hyun-Han Shin Nov 2007

The Change In Corporate Transparency Of Korean Firms After The Asian Financial Crisis: An Analysis Using Analysts' Forecast Data, Jinho Chang, Young Jun Cho, Hyun-Han Shin

Research Collection School Of Accountancy

Using analysts' forecast error and forecast dispersion of firms covered by the I/B/E/S database, this study examines the change in information asymmetry of Korean firms around the financial crisis of 1997. Results show that the information asymmetry of Korean firms is lower after the financial crisis than before, implying that corporate transparency did, in effect, improve with the change in business environment. In addition, this study finds that chaebol firms have higher information asymmetry than non-chaebol firm, and also that the corporate transparency improvement of chaebol firms is not higher than that of non-chaebol firms in the post-crisis period despite …

Go to article

Legal Systems And Earnings Quality: The Role Of Auditor Industry Specialization, Chee Yeow Lim, Soo Young Kwon, Patricia Mui Siang Tan Nov 2007

Legal Systems And Earnings Quality: The Role Of Auditor Industry Specialization, Chee Yeow Lim, Soo Young Kwon, Patricia Mui Siang Tan

Research Collection School Of Accountancy

This paper extends prior studies in auditor industry specialization to an international setting and examines if the impact of industry specialist auditors on earnings quality is dependent on the legal environments. Using data for 28 countries over 20 industries from 1993 to 2003, we find that clients of industry specialist auditors have lower discretionary current accruals and higher earnings response coefficients than clients of nonspecialist auditors. In addition, we find that the impact of auditor industry specialization on earnings quality increases as the legal environment weakens. Collectively, the results suggest that the benefits from engaging the services of industry specialist …

Go to article

The Dynamics Of Implementing And Managing Modularity Of Organizational Routines During Capability Development: Insights From A Process Model, Shan Ling Pan, Gary Shan Chi Pan, Adela Chen, Ming Huei Hsieh Nov 2007

The Dynamics Of Implementing And Managing Modularity Of Organizational Routines During Capability Development: Insights From A Process Model, Shan Ling Pan, Gary Shan Chi Pan, Adela Chen, Ming Huei Hsieh

Research Collection School Of Accountancy

Past research using the resource-based view of a firm suggests that it is important to consider how firms develop, manage, and deploy resources and capabilities to influence the overall process of strategy formation and implementation. Relatively little research has been conducted in conceptualizing how firms implement and manage modularity of organizational routines during capability development. Yet, most companies would benefit from implementing modularity in organizational routines when competing in dynamic market conditions. Such implementations may require fundamental organizational reorientation that incurs significant coordination costs, and in some cases, such modularization attempts may fail, costing organizations significant amounts of valuable resources. …

Go to article

Experimenting Vireo-374: Bag-Of-Visual-Words And Visual-Based Ontology For Semantic Video Indexing And Search, Chong-Wah Ngo, Yu-Gang Jiang, Xiaoyong Wei, Feng Wang, Wanlei Zhao, Hung-Khoon Tan, Xiao Wu Nov 2007

Experimenting Vireo-374: Bag-Of-Visual-Words And Visual-Based Ontology For Semantic Video Indexing And Search, Chong-Wah Ngo, Yu-Gang Jiang, Xiaoyong Wei, Feng Wang, Wanlei Zhao, Hung-Khoon Tan, Xiao Wu

Research Collection School Of Computing and Information Systems

In this paper, we present our approaches and results of high-level feature extraction and automatic video search in TRECVID-2007.

Go to article

Modeling Semantics In Composite Web Service Requests By Utility Elicitation, Qianhui Althea Liang, Jen Yao Chung, Steven M. Miller Nov 2007

Modeling Semantics In Composite Web Service Requests By Utility Elicitation, Qianhui Althea Liang, Jen Yao Chung, Steven M. Miller

Research Collection School Of Computing and Information Systems

When meeting the challenges in automatic and semi-automatic Web service composition, capturing the user’s service demand and preferences is as important as knowing what the services can do. This paper discusses the idea of semantic service requests for composite services, and presents a multi-attribute utility theory (MAUT) based model of composite service requests. Service requests are modeled as user preferences and constraints. Two preference structures, additive independence and generalized additive independence, are utilized in calculating the expected utilities of service composition outcomes. The model is also based on an iterative and incremental scheme meant to better capture requirements in accordance …

Go to article

S-Made: Interactive Storytelling Architecture Through Goal Execution And Decomposition, Yundong Cai, Zhiqi Shen, Chunyan Miao, Ah-Hwee Tan Nov 2007

S-Made: Interactive Storytelling Architecture Through Goal Execution And Decomposition, Yundong Cai, Zhiqi Shen, Chunyan Miao, Ah-Hwee Tan

Research Collection School Of Computing and Information Systems

Interactive storytelling, emerging with virtual reality technology, has attracted a lot of research interests in recent years. In order to bridge the gap between story generation and story presentation, some hybrid narrative models are raised. In this paper, we propose a new hybrid interactive storytelling architecture S-MADE. It combines the story plot generation and character performance through goal execution and decomposition mechanism. Fuzzy Cognitive Goal Net (FCGN) is a goal modeling tool for modeling the story scenario and character behaviors. The goal decomposition algorithm enables for director agent to dispatch acts to characters easily. With this system, dynamic storylines as …

Go to article

The Value-Congruence Model Of Memory For Emotional Experiences: An Explanation For Cultural Differences In Emotional Self-Reports, Shigehiro Oishi, Ulrich Schimmack, Ed Diener, Chu Kim-Prieto, Christie N. Scollon, Dong-Won Choi Nov 2007

The Value-Congruence Model Of Memory For Emotional Experiences: An Explanation For Cultural Differences In Emotional Self-Reports, Shigehiro Oishi, Ulrich Schimmack, Ed Diener, Chu Kim-Prieto, Christie N. Scollon, Dong-Won Choi

Research Collection School of Social Sciences

In 3 studies, the authors found support for the value-congruence model that accounts for cultural variations in memory for emotional experiences. In Study 1, the authors found that in the made-in-the-U.S. scenario condition, European Americans were more accurate than were Asian Americans in their retrospective frequency judgments of emotions. However, in the made-in-Japan scenario condition, European Americans were less accurate than were Asian Americans. In Study 2, the authors demonstrated that value orientation mediates the Culture X Type of Event congruence effect. In Study 3 (a daily event sampling study), the authors showed that the congruence effect was explained by …

Go to article

Corporate Governance Reform As Institutional Innovation: The Case Of Japan, Toru Yoshikawa, Lai Si Tsui-Auch, Jean Mcguire Nov 2007

Corporate Governance Reform As Institutional Innovation: The Case Of Japan, Toru Yoshikawa, Lai Si Tsui-Auch, Jean Mcguire

Research Collection Lee Kong Chian School Of Business

To address the convergence-divergence debate in corporate governance, we conduct a multiple-case, multiple-level study to analyze the diffusion of governance innovation in Japan. We argue that Japanese systems of corporate governance neither fully converge to, nor completely diverge from, the Anglo-American model. Rather, Sony-the pioneer of corporate governance reforms-and its followers selectively adopted features from this model, decoupled them from the original context, and tailored them to fit to their own situations to generate governance innovation. However, we find that the spread of innovation across firms and institutional levels is far from linear and straightforward, and that other well-regarded firms …

Go to article

The Promise Of A Managerial Values Approach To Corporate Philanthropy, Jaepil Choi, Heli Wang Nov 2007

The Promise Of A Managerial Values Approach To Corporate Philanthropy, Jaepil Choi, Heli Wang

Research Collection Lee Kong Chian School Of Business

This article presents an alternative rationale for corporate philanthropy based on managerial values of benevolence and integrity. On the one hand, top managers with benevolence and integrity values are more likely to spread their intrinsic concern for others into the wider society in the form of corporate philanthropy. On the other hand, top managers high in benevolence and integrity are likely to contribute to improved managerial credibility and trusting firm-stakeholder relationships, thereby improving corporate financial performance. Therefore, the article makes the argument that both corporate philanthropy and corporate financial performance can better be interpreted as resulting from managers’ benevolence and …

Go to article

The Singapore Academy Of Law Annual Lecture 2007: Australia’S Contribution To The Development Of The Common Law, Delivered By The Honourable Murray Gleeson Ac, Chief Justice Of Australia, Yihan Goh, Nathaniel Khng Nov 2007

The Singapore Academy Of Law Annual Lecture 2007: Australia’S Contribution To The Development Of The Common Law, Delivered By The Honourable Murray Gleeson Ac, Chief Justice Of Australia, Yihan Goh, Nathaniel Khng

Research Collection Yong Pung How School Of Law

No abstract provided.

Go to article

Designing The Market Game For A Commodity Trading Simulation, Shih-Fen Cheng Nov 2007

Designing The Market Game For A Commodity Trading Simulation, Shih-Fen Cheng

Research Collection School Of Computing and Information Systems

In this paper, we propose to design a market game that (a) can be used in modeling and studying commodity trading scenarios, and (b) can be used in capturing human traders' behaviors. Specifically, we demonstrate the usefulness of this commodity trading game in a single-commodity futures trading scenario. A pilot experiment was run with a mixture of human traders and an autonomous agent that emulates the aggregatedmarket condition, with the assumption that this autonomous agent would hint each of its action through a public announcement. We show that the information collected from this simulation can be used to extract the …

Go to article

The Price Of Stability In Selfish Scheduling Games, Lucas Agussurja, Hoong Chuin Lau Nov 2007

The Price Of Stability In Selfish Scheduling Games, Lucas Agussurja, Hoong Chuin Lau

Research Collection School Of Computing and Information Systems

Game theory has gained popularity as an approach to analysing and understanding distributed systems with selfinterested agents. Central to game theory is the concept of Nash equilibrium as a stable state (solution) of the system, which comes with a price - the loss in efficiency. The quantification of the efficiency loss is one of the main research concerns. In this paper, we study the quality and computational characteristic of the best Nash equilibrium in two selfish scheduling models: the congestion model and the sequencing model. In particular, we present the following results: (1) In the congestion model: first, the best …

Go to article

Light-Weight Encryption Schemes For Multimedia Data, Feng Bao, Robert H. Deng Nov 2007

Light-Weight Encryption Schemes For Multimedia Data, Feng Bao, Robert H. Deng

Research Collection School Of Computing and Information Systems

Due to the pervasiveness of high-speed networks and multimedia communications and storage, the demand for highspeed cryptosystems is ever increasing. It is widely believed that there is a tradeoff between speed and security in cryptosystem design. No existing encryption algorithms are both fast enough for high-speed operation and sufficiently secure to withstand powerful cryptanalysis. In this paper, we propose and analyze a generic construction of high-speed encryption schemes. Our solution is based on the fact that there exist secure but relatively slow block ciphers, e. g. AES, and super-fast but relatively weaker stream ciphers. We then combine a secure block …

Go to article

Detecting And Segmenting Un-Occluded Items By Actively Casting Shadows, Tze K Koh, Amit Agrawal, Ramesh Raskar, Steve Morgan, Nicholas Miles, Barrie Hayes-Gill Nov 2007

Detecting And Segmenting Un-Occluded Items By Actively Casting Shadows, Tze K Koh, Amit Agrawal, Ramesh Raskar, Steve Morgan, Nicholas Miles, Barrie Hayes-Gill

Research Collection College of Integrative Studies

We present a simple and practical approach for segmenting un-occluded items in a scene by actively casting shadows. By ‘items’, we refer to objects (or part of objects) enclosed by depth edges. Our approach utilizes the fact that under varying illumination, un-occluded items will cast shadows on occluded items or background, but will not be shadowed themselves.We employ an active illumination approach by taking multiple images under different illumination directions, with illumination source close to the camera. Our approach ignores the texture edges in the scene and uses only the shadow and silhouette information to determine the occlusions. We show …

Go to article

Model Checking In The Absence Of Code, Model And Properties, David Lo, Siau-Cheng Khoo Nov 2007

Model Checking In The Absence Of Code, Model And Properties, David Lo, Siau-Cheng Khoo

Research Collection School Of Computing and Information Systems

Model checking is a major approach in ensuring software correctness. It verifies a model converted from code against some formal properties. However, difficulties and programmers ’ reluctance to formalize formal properties have been some hurdles to its widespread industrial adoption. Also, with the advent of commercial off-the-shelf (COTS) components provided by third party vendors, model checking is further challenged as often only a binary version of the code is provided by vendors. Interestingly, latest instrumentation tools like PIN and Valgrind have enable execution traces to be collected dynamically from a running program. In this preliminary study, we investigate what can …

Go to article

Measuring Article Quality In Wikipedia: Models And Evaluation, Meiqun Hu, Ee Peng Lim, Aixin Sun, Hady W. Lauw, Ba-Quy Vuong Nov 2007

Measuring Article Quality In Wikipedia: Models And Evaluation, Meiqun Hu, Ee Peng Lim, Aixin Sun, Hady W. Lauw, Ba-Quy Vuong

Research Collection School Of Computing and Information Systems

Wikipedia has grown to be the world largest and busiest free encyclopedia, in which articles are collaboratively written and maintained by volunteers online. Despite its success as a means of knowledge sharing and collaboration, the public has never stopped criticizing the quality of Wikipedia articles edited by non-experts and inexperienced contributors. In this paper, we investigate the problem of assessing the quality of articles in collaborative authoring of Wikipedia. We propose three article quality measurement models that make use of the interaction data between articles and their contributors derived from the article edit history. Our Basic model is designed based …

Go to article

Important Characteristics Of Software Development Team Members: An Empirical Investigation Using Repertory Grid, Keng Siau, Xin Tan, Hong Sheng Nov 2007

Important Characteristics Of Software Development Team Members: An Empirical Investigation Using Repertory Grid, Keng Siau, Xin Tan, Hong Sheng

Research Collection School Of Computing and Information Systems

An information system is typically developed by a team of information systems (IS) professionals. Research shows that teams staffed with the right people are more likely to be effective and efficient. There is a paucity of study that examines the important traits of IS professionals in team contexts. The objective of this research is to identify and understand the important characteristics of good team members in software development projects. We applied an established psychological technique (Repertory Grid) to guide our interviews with 21 experienced IS professionals, who have had extensive experience in software development teams. The comprehensive list of important …

Go to article

Important Characteristics Of Software Development Team Members: An Empirical Investigation Using Repertory Grid, Keng Siau, Xin Tan, Hong Sheng Nov 2007

Important Characteristics Of Software Development Team Members: An Empirical Investigation Using Repertory Grid, Keng Siau, Xin Tan, Hong Sheng

Research Collection School Of Computing and Information Systems

An information system is typically developed by a team of information systems (IS) professionals. Research shows that teams staffed with the right people are more likely to be effective and efficient. There is a paucity of study that examines the important traits of IS professionals in team contexts. The objective of this research is to identify and understand the important characteristics of good team members in software development projects. We applied an established psychological technique (Repertory Grid) to guide our interviews with 21 experienced IS professionals, who have had extensive experience in software development teams. The comprehensive list of important …

Go to article

Context-Aware Statistical Debugging: From Bug Predictors To Faulty Control Flow Paths, Lingxiao Jiang, Zhendong Su Nov 2007

Context-Aware Statistical Debugging: From Bug Predictors To Faulty Control Flow Paths, Lingxiao Jiang, Zhendong Su

Research Collection School Of Computing and Information Systems

Effective bug localization is important for realizing automated debugging. One attractive approach is to apply statistical techniques on a collection of evaluation profiles of program properties to help localize bugs. Previous research has proposed various specialized techniques to isolate certain program predicates as bug predictors. However, because many bugs may not be directly associated with these predicates, these techniques are often ineffective in localizing bugs. Relevant control flow paths that may contain bug locations are more informative than stand-alone predicates for discovering and understanding bugs. In this paper, we propose an approach to automatically generate such faulty control flow paths …

Go to article

Mining Modal Scenarios-Based Specifications From Execution Trace Of Reactive Systems, David Lo, Shahar Maoz, Siau-Cheng Khoo Nov 2007

Mining Modal Scenarios-Based Specifications From Execution Trace Of Reactive Systems, David Lo, Shahar Maoz, Siau-Cheng Khoo

Research Collection School Of Computing and Information Systems

Specification mining is a dynamic analysis process aimed at automatically inferring suggested specifications of a program from its execution traces. We describe a novel method, framework, and tool, for mining inter-object scenario-based specifications in the form of a UML2-compliant variant of Damm and Harels Live Sequence Charts (LSC). LSC extends the classical partial order semantics of sequence diagrams with temporal liveness and symbolic class level lifelines, in order to generate compact and expressive specifications. The output of our algorithm is a sound and complete set of statistically significant LSCs (i.e., satisfying given thresholds of support and confidence), mined from an …

Go to article

Sloque: Slot-Based Query Expansion For Complex Questions, Maggy Anastasia Suryanto, Ee Peng Lim, Aixin Sun, Roger Hsiang-Li Chiang Nov 2007

Sloque: Slot-Based Query Expansion For Complex Questions, Maggy Anastasia Suryanto, Ee Peng Lim, Aixin Sun, Roger Hsiang-Li Chiang

Research Collection School Of Computing and Information Systems

Searching answers to complex questions is a challenging IR task. In this paper, we examine the use of query templates with semantic slots to formulate slot-based queries. These queries have query terms assigned to entity and relationship slots. We develop several query expansion methods for slot-based queries so as to improve their retrieval effectiveness on a document collection. Each method consists of a combination of term scoring scheme, term scoring formula, and term assignment scheme. Our preliminary experiments evaluate these different slot-based query expansion methods on a collection of news documents,and conclude that:(1) slot-based queries yield better retrieval accuracy compared …

Go to article

On Improving Wikipedia Search Using Article Quality, Meiqun Hu, Ee Peng Lim, Aixin Sun, Hady Wirawan Lauw, Ba-Quy Vuong Nov 2007

On Improving Wikipedia Search Using Article Quality, Meiqun Hu, Ee Peng Lim, Aixin Sun, Hady Wirawan Lauw, Ba-Quy Vuong

Research Collection School Of Computing and Information Systems

Wikipedia is presently the largest free-and-open online encyclopedia collaboratively edited and maintained by volunteers. While Wikipedia offers full-text search to its users, the accuracy of its relevance-based search can be compromised by poor quality articles edited by non-experts and inexperienced contributors. In this paper, we propose a framework that re-ranks Wikipedia search results considering article quality. We develop two quality measurement models, namely Basic and PeerReview, to derive article quality based on co-authoring data gathered from articles' edit history. Compared with Wikipedia's full-text search engine, Google and Wikiseek, our experimental results showed that (i) quality-only ranking produced by PeerReview gives …

Go to article

Comment-Oriented Blog Summarization By Sentence Extraction, Meishan Hu, Ee Peng Lim, Aixin Sun Nov 2007

Comment-Oriented Blog Summarization By Sentence Extraction, Meishan Hu, Ee Peng Lim, Aixin Sun

Research Collection School Of Computing and Information Systems

Much existing research on blogs focused on posts only, ignoring their comments. Our user study conducted on summarizing blog posts, however, showed that reading comments does change one's understanding about blog posts. In this research, we aim to extract representative sentences from a blog post that best represent the topics discussed among its comments. The proposed solution first derives representative words from comments and then selects sentences containing representative words. The representativeness of words is measured using ReQuT (i.e., Reader, Quotation, and Topic). Evaluated on human labeled sentences, ReQuT together with summation-based sentence selection showed promising results.

Go to article

An Information-Sharing Based Anti-Phishing System, Yueqing Cheng, Zhen Yuan, Lei Ma, Robert H. Deng Nov 2007

An Information-Sharing Based Anti-Phishing System, Yueqing Cheng, Zhen Yuan, Lei Ma, Robert H. Deng

Research Collection School Of Computing and Information Systems

This paper presents the design of an informationsharing based or server-assisted anti-phishing system. The system follows a client-server architecture and makes decision based on not only client side heuristics but also collective information from multiple clients. When visiting a web site, a client side proxy, installed as a plug-in to a browser, decides on the legitimacy of the web site based on a combination of white list, black list and heuristics. In case the client side proxy does not have sufficient information to make a clear judgment, it reports the suspicious site to a central server which has access to …

Go to article

Multi-Period Combinatorial Auction Mechanism For Distributed Resource Allocation And Scheduling, Hoong Chuin Lau, Shih-Fen Cheng, Thin Yin Leong, Jong Han Park, Zhengyi Zhao Nov 2007

Multi-Period Combinatorial Auction Mechanism For Distributed Resource Allocation And Scheduling, Hoong Chuin Lau, Shih-Fen Cheng, Thin Yin Leong, Jong Han Park, Zhengyi Zhao

Research Collection School Of Computing and Information Systems

We consider the problem of resource allocation and scheduling where information and decisions are decentralized, and our goal is to propose a market mechanism that allows resources from a central resource pool to be allocated to distributed decision makers (agents) that seek to optimize their respective scheduling goals. We propose a generic combinatorial auction mechanism that allows agents to competitively bid for the resources needed in a multi-period setting, regardless of the respective scheduling problem faced by the agent, and show how agents can design optimal bidding strategies to respond to price adjustment strategies from the auctioneer. We apply our …

Go to article

Advances And Challenges With Data Broadcasting In Wireless Mesh Networks, Chun Tung Chou, Junaid Qadir, Joo Ghee Lim, Archan Misra Nov 2007

Advances And Challenges With Data Broadcasting In Wireless Mesh Networks, Chun Tung Chou, Junaid Qadir, Joo Ghee Lim, Archan Misra

Research Collection School Of Computing and Information Systems

Wireless mesh networks have become a promising means to provide low-cost broadband access. Many WMN applications require broadcasting data (IPTV etc.) over the WMN. This article studies how efficient data broadcast, measured in terms of broadcast latency, can be realized by exploiting two features of WMNs: the use of multiple transmission rates at the link layer and the use of multiple radio interfaces on each node. We demonstrate that by exploiting these features, broadcast latency can be reduced severalfold compared to the current default practice in wireless LANs of using the lowest transmission rate for broadcast traffic. We also discuss …

Go to article

First Prev Next Last