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Autonomic Management Of Stream Processing Applications Via Adaptive Bandwidth Control, Dimitrios Pendarakis, Jeremy Silber, Laura Wynter Jul 2006

Autonomic Management Of Stream Processing Applications Via Adaptive Bandwidth Control, Dimitrios Pendarakis, Jeremy Silber, Laura Wynter

Research Collection School Of Computing and Information Systems

We present a novel autonomic control system for high performance stream processing systems. The system uses bandwidth controls on incoming or outgoing streams to achieve a desired resource utilization balance among a set of concurrently executing stream processing tasks. We show that CPU prioritization and allocation mechanisms in schedulers and virtual machine managers are not sufficient to control such I/O-centric applications, and present an autonomic bandwidth control system that adaptively adjusts incoming and outgoing traffic rates to achieve system management goals. The system dynamically learns the bandwidth rate necessary to meet the system management goals using stochastic nonlinear optimization, and …

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Mobile Healthcare Informatics, Keng Siau, Zixing Shen Jul 2006

Mobile Healthcare Informatics, Keng Siau, Zixing Shen

Research Collection School Of Computing and Information Systems

Advances in wireless technology give pace to the rapid development of mobile applications. The coming mobile revolution will bring dramatic and fundamental changes to our daily life. It will influence the way we live, the way we do things, and the way we take care of our health. For the healthcare industry, mobile applications provide a new frontier in offering better care and services to patients, and a more flexible and mobile way of communicating with suppliers and patients. Mobile applications will provide important real time data for patients, physicians, insurers, and suppliers. In addition, it will revolutionalize the way …

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Generalized On-Demand Service Architecture For Interactive Applications [Us 2006/0168107 A1], Rajesh K. Balan, Paul C. Castro, Maria R. Ebling, Archan Misra Jul 2006

Generalized On-Demand Service Architecture For Interactive Applications [Us 2006/0168107 A1], Rajesh K. Balan, Paul C. Castro, Maria R. Ebling, Archan Misra

Research Collection School Of Computing and Information Systems

A method, system, and computer program for executing a network-based distributed application. An infrastructure is described that includes application containers configured to execute an application instance of the distributed application and measure quality of service metrics for the application instance. Workload management elements form a decentralized workload management layer. The workload management layer is configured to assign a workload to application containers based on the quality of service metrics received by the application containers.

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Hierarchical Hidden Markov Model For Rushes Structuring And Indexing, Chong-Wah Ngo, Zailiang Pan, Xiaoyong Wei Jul 2006

Hierarchical Hidden Markov Model For Rushes Structuring And Indexing, Chong-Wah Ngo, Zailiang Pan, Xiaoyong Wei

Research Collection School Of Computing and Information Systems

Rushes footage are considered as cheap gold mine with the potential for reuse in broadcasting and filmmaking industries. However, it is difficult to mine the "gold" from the rushes since usually only minimum metadata is available. This paper focuses on the structuring and indexing of the rushes to facilitate mining and retrieval of "gold". We present a new approach for rushes structuring and indexing based on motion feature. We model the problem by a two-level Hierarchical Hidden Markov Model (HHMM). The HHMM, on one hand, represents the semantic concepts in its higher level to provide simultaneous structuring and indexing, on …

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Prediction-Based Gesture Detection In Lecture Videos By Combining Visual, Speech And Electronic Slides, Feng Wang, Chong-Wah Ngo, Ting-Chuen Pong Jul 2006

Prediction-Based Gesture Detection In Lecture Videos By Combining Visual, Speech And Electronic Slides, Feng Wang, Chong-Wah Ngo, Ting-Chuen Pong

Research Collection School Of Computing and Information Systems

This paper presents an efficient algorithm for gesture detection in lecture videos by combining visual, speech and electronic slides. Besides accuracy, response time is also considered to cope with the efficiency requirements of real-time applications. Candidate gestures are first detected by visual cue. Then we modifity HMM models for complete gestures to predict and recognize incomplete gestures before the whole gestures paths are observed. Gesture recognition is used to verify the results of gesture detection. The relations between visual, speech and slides are analyzed. The correspondence between speech and gesture is employed to improve the accuracy and the responsiveness of …

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Authenticating Multi-Dimensional Query Results In Data Publishing, Weiwei Cheng, Hwee Hwa Pang, Kian-Lee Tan Jul 2006

Authenticating Multi-Dimensional Query Results In Data Publishing, Weiwei Cheng, Hwee Hwa Pang, Kian-Lee Tan

Research Collection School Of Computing and Information Systems

In data publishing, the owner delegates the role of satisfying user queries to a third-party publisher. As the publisher may be untrusted or susceptible to attacks, it could produce incorrect query results. This paper introduces a mechanism for users to verify that their query answers on a multi-dimensional dataset are correct, in the sense of being complete (i.e., no qualifying data points are omitted) and authentic (i.e., all the result values originated from the owner). Our approach is to add authentication information into a spatial data structure, by constructing certified chains on the points within each partition, as well as …

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Crossing The Chasm: The Xid Technologies Story, Arcot Desai Narasimhalu, Roberto Mariani Jul 2006

Crossing The Chasm: The Xid Technologies Story, Arcot Desai Narasimhalu, Roberto Mariani

Research Collection School Of Computing and Information Systems

XID Technologies is a face processing start up company built initially around a disruptive face recognition technology. The technology innovation came from Kent Ridge Digital Labs, a publicly funded software research laboratory in Singapore. Face recognition is the least intrusive and harmless among the various biometric solutions available in the market. The basic approach to human face recognition is to identify a robust feature set that was unique enough to differentiate amongst the many millions of human faces that the system was required to verify. The technology innovation used by XID framed the problem differently and thereby overcame the challenges …

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Direct And Indirect Effects Of Third-Party Relationships On Interpersonal Trust, Donald L. Ferrin, Kurt T. Dirks, Pri P. Shah Jul 2006

Direct And Indirect Effects Of Third-Party Relationships On Interpersonal Trust, Donald L. Ferrin, Kurt T. Dirks, Pri P. Shah

Research Collection Lee Kong Chian School Of Business

Past studies of the determinants of interpersonal trust have focused primarily on how trust forms in isolated dyads. Yet within organizations, trust typically develops between individuals who are embedded in a complex web of existing and potential relationships. In this article, the authors identify 3 alternative ways in which a trustor and trustee may be linked to each other via third parties: network closure (linked via social interactions with third parties), trust transferability (linked via trusted third parties), and structural equivalence (linked via the similarity of their relationships with all potential third parties within the organization). Each of these is …

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Perceptions Of Corporate Social Responsibility: An Empirical Study In Singapore; Strategic Management Policy, Gilbert Yip Wei Tan, Rajah Vellan Komaran Jul 2006

Perceptions Of Corporate Social Responsibility: An Empirical Study In Singapore; Strategic Management Policy, Gilbert Yip Wei Tan, Rajah Vellan Komaran

Research Collection Lee Kong Chian School Of Business

In Singapore, there is no doubt that there have been efforts by various local and foreign corporations to incorporate some CSR principles in their operations. Indeed, there was a national initiative modeled after the tripartite approach to industrial relations where national economic and industrial issues are collectively resolved by the government, employers and employees. Against the backdrop of this national initiative and the effort by some corporations to incorporate CSR principles, not much is really known about the state of affairs in Singapore.

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Gender Differences In Perceived Work Demands, Family Demands, And Life Stress Among Married Chinese Employees, Jaepil Choi, Chao C. Chen Jul 2006

Gender Differences In Perceived Work Demands, Family Demands, And Life Stress Among Married Chinese Employees, Jaepil Choi, Chao C. Chen

Research Collection Lee Kong Chian School Of Business

Although gender-based division of labour and the identity theory of stress suggest that the relationship between work and family demands and life stress may vary as a function of gender, it is largely unknown whether these arguments are also valid in China. To address this gap in the existing literature, the current study investigates the gender differences in perceived work and family demands, and the effects of these perceived demands on the life stress of Chinese male and female employees. The study of 153 married Chinese employees found that Chinese women perceived a higher level of family demands than did …

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The Internationalization Of Singapore's State Enterprise Network In The Context Of Asia's Transborder Industrialization: New Evidence From Indonesia, Vietnam And China, Caroline Yeoh, Victor Sim, Genrong Meng Jun 2006

The Internationalization Of Singapore's State Enterprise Network In The Context Of Asia's Transborder Industrialization: New Evidence From Indonesia, Vietnam And China, Caroline Yeoh, Victor Sim, Genrong Meng

Research Collection Lee Kong Chian School Of Business

State-led, market-driven interventions have been the hallmark of the Singapore `success story’. This paper revisits Singapore’s state-enterprise strategy, in the context of the city-state’s determined efforts at internationalization, and takes a closer look at the portability of this strategy, in the framework of Regionalization21, a series of transborder industrialization experiments in Indonesia, Vietnam and China. These state-engineered projects, orchestrated to encapsulate economic space for Singapore-based firms to expand into the region, remains controversial. This strategic initiative is promulgated on the exportability of Singapore’s state credibility, systemic and operational efficiencies as well as technological competencies, to locations where these attributes are …

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Singapore Management University Appoints New Dean For Business School, Singapore Management University Jun 2006

Singapore Management University Appoints New Dean For Business School, Singapore Management University

SMU Press Releases and News

No abstract provided.

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Mabs: Spreadsheet– Based Decision Support For Precision Marketing, Bert De Reyck, Zeger Degraeve Jun 2006

Mabs: Spreadsheet– Based Decision Support For Precision Marketing, Bert De Reyck, Zeger Degraeve

Research Collection Lee Kong Chian School Of Business

In this paper, we describe a decision support system developed for automatically scheduling and optimising broadcasts of advertisements to mobile phones via SMS (Short Message Service) text messaging. The system, MABS or “Mobile Advertising Broadcast Scheduler”, is developed in Microsoft Excel with a link to Lingo, a modelling language and IP solver. It was developed for a London-based company specialized in location-sensitive precision marketing via mobile phones. The system significantly reduced the time required to schedule the broadcasts, and resulted both in increased customer response and revenues.

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Dynamics Of Trust In Guanxi Networks, Roy Y. J. Chua, Michael W. Morris Jun 2006

Dynamics Of Trust In Guanxi Networks, Roy Y. J. Chua, Michael W. Morris

Research Collection Lee Kong Chian School Of Business

Interpersonal trust is an important element of Chinese guanxi network. In this chapter, we examine Chinese guanxi network from a trust perspective. We adopt the distinction that trust could be built on either a socio-emotional basis (affect-based trust) or an instrumental basis (cognition-based trust) and use this lens to examine cultural differences in Chinese and Western social networks. Specifically, we will discuss (a) how the two dimensions of trust are related in the Chinese versus American context, and (b) how affect-based trust is associated with different forms of social exchange in Chinese versus American social networks. Because dyadic relationships are …

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Intergeneration Educational Mobility In Singapore: An Empirical Study, Kong Weng Ho, Regina Ng Jun 2006

Intergeneration Educational Mobility In Singapore: An Empirical Study, Kong Weng Ho, Regina Ng

Research Collection School Of Economics

No abstract provided.

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Growth Accounting For A Follower-Economy In A World Of Ideas: The Example Of Singapore, Kong Weng Ho, Hian Teck Hoon Jun 2006

Growth Accounting For A Follower-Economy In A World Of Ideas: The Example Of Singapore, Kong Weng Ho, Hian Teck Hoon

Research Collection School Of Economics

In this paper, we take another approach to accounting for the sources of Singapore’s economic growth by being explicit about the channels through which Singapore, as a technological follower, benefits from international R&D spillovers. Taking into account the channels through which technology developed in the G5 countries diffuses to technological followers, we show that 57.5 percent of Singapore’s real GDP per worker growth rate over the 1970-2002 period is due to multifactor productivity growth. In particular, about 52 percent of the growth is accounted for by an increase in the effectiveness of accessing ideas developed by the technology leaders through …

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Independent Administrative Authorities And The Standard Of Judicial Review, Saskia Lavrijssen, Maartje De Visser Jun 2006

Independent Administrative Authorities And The Standard Of Judicial Review, Saskia Lavrijssen, Maartje De Visser

Research Collection Yong Pung How School Of Law

Recent developments in European competition and electronic communications law have led to an increased focus on, and importance of, independent administrative authorities. The competences available to these authorities are often wide-ranging, at times encompassing elements of all three of Montesquieu’s powers. These competences typically embody a considerable degree of discretion to allow the balancing of the – opposing – interests of various groups of stakeholders, such as consumers, competitors and manufacturers. This raises the question how the independence of administrative authorities can be counterbalanced by a certain degree of accountability for their actions. The aim of the present article is …

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Cognitive Mapping Techniques For User-Database Interaction, Keng Siau, X. Tan Jun 2006

Cognitive Mapping Techniques For User-Database Interaction, Keng Siau, X. Tan

Research Collection School Of Computing and Information Systems

In this paper, we first develop a framework of user-database interaction. Based on this framework, we then provide a discussion on how notable human factors influence various dimensions of user-database interaction. Following that, we propose using cognitive mapping techniques to overcome some cognitive and behavioral biases during user-database interaction. Three popular cognitive mapping techniques-causal mapping, semantic mapping, and concept mapping-are introduced as techniques to elicit an individual's belief systems regarding a problem domain. Through an example database application, we demonstrate how to use these cognitive mapping techniques to improve user-database interaction. Finally, we discuss the implications of this research for …

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Fuzzy Cognitive Goal Net For Interactive Storytelling Plot Design, Yundong Cai, Chunyan Miao, Ah-Hwee Tan, Zhiqi Shen Jun 2006

Fuzzy Cognitive Goal Net For Interactive Storytelling Plot Design, Yundong Cai, Chunyan Miao, Ah-Hwee Tan, Zhiqi Shen

Research Collection School Of Computing and Information Systems

Interactive storytelling attracts a lot of research interests among the interactive entertainments in recent years. Designing story plot for interactive storytelling is currently one of the most critical problems of interactive storytelling. Some traditional AI planning methods, such as Hierarchical Task Network, Heuristic Searching Method are widely used as the planning tool for the story plot design. This paper proposes a model called Fuzzy Cognitive Goal Net as the story plot planning tool for interactive storytelling, which combines the planning capability of Goal net and reasoning ability of Fuzzy Cognitive Maps. Compared to conventional methods, the proposed model shows a …

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Financial Value Of Brands In Mergers And Acquisitions: Is Value In The Eye Of The Beholder?, Cem Badahir, Sundar G.Bharadwaj, Rajendra Kumar Srivastava Jun 2006

Financial Value Of Brands In Mergers And Acquisitions: Is Value In The Eye Of The Beholder?, Cem Badahir, Sundar G.Bharadwaj, Rajendra Kumar Srivastava

Research Collection Lee Kong Chian School Of Business

Firms frequently engage in merger and acquisition deals. In these transactions, brands account for significant but differential proportions of overall transaction value. Extant marketing literature on financial value of brands focuses on drivers of financial value only within a firm. However, in a merger and acquisition context, value of brands also depends on how their new owners might leverage them in the marketplace. This study identifies and empirically tests both the target and acquirer characteristics that affect the value of target firm’s brands in mergers and acquisitions. Furthermore, the authors examine the moderating role of deal type and target firm …

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Integrated Crisis Mapping: Toward A Publics-Based, Emotion-Driven Conceptualization In Crisis Communication, Yan Jin, Pang, A., Glen Cameron Jun 2006

Integrated Crisis Mapping: Toward A Publics-Based, Emotion-Driven Conceptualization In Crisis Communication, Yan Jin, Pang, A., Glen Cameron

Research Collection Lee Kong Chian School Of Business

Extending current situation-based conceptualizations of crisis response, this paper develops a more generic and systemic approach to understanding the role of emotions in crisis situations. Taking an integrated approach, the authors propose a public-based, emotion-driven perspective to crisis communication modeling, mapping different crisis types, and underpinning them with two continua, the organization’s involvement with the crisis issue and primary public’s coping strategy. The paper further argues that the appropriate crisis response and tools to manage a crisis should address the full range of emotions for optimal effectiveness at both strategic and tactical levels.

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Do We Stand On Common Ground? A Threat Appraisal Model For Terror Alerts Issued By The Department Of Homeland Security, Augustine Pang, Jin Yan, Glen T. Cameron Jun 2006

Do We Stand On Common Ground? A Threat Appraisal Model For Terror Alerts Issued By The Department Of Homeland Security, Augustine Pang, Jin Yan, Glen T. Cameron

Research Collection Lee Kong Chian School Of Business

The fabric and faces of threat, and the expediency and efficiency in the communication of threat, are examined with a threat appraisal model. This model is empirically tested on an ongoing communication challenge, the issuance of terror alerts by the United States' Department of Homeland Security (DHS), focusing on how threat is appraised by both the conservative and liberal audiences. Findings showed a shared view by the DHS and conservative audiences on the levels and nature of threats; liberal audiences thought otherwise. Though there appeared to be a consensus between the conservative and liberal audiences on the efficacy of threat …

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Policy Competition In The 2002 French Legislative And Presidential Elections, Michael Laver, Kenneth Benoit, Nicolas Sauger Jun 2006

Policy Competition In The 2002 French Legislative And Presidential Elections, Michael Laver, Kenneth Benoit, Nicolas Sauger

Research Collection School of Social Sciences

The French two-round system of presidential elections forces candidates to choose strategies designed to maximize their votes in two different, potentially conflicting strategic contexts: a first round contest between many candidates, and a second round between (typically) a left- and a right-oriented candidate. Following a constitutional change in 2000, furthermore, presidential elections are synchronized with legislative elections, more tightly linking presidential candidates to the policy platforms of the parties they represent. This article examines the consequences of policy positioning by presidential candidates, measuring, comparing and assessing positioning in the legislative elections and in the first and second presidential election rounds. …

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War, Shame, And Time: Pastoral Governance And National Identity In England And America, William A. Callahan Jun 2006

War, Shame, And Time: Pastoral Governance And National Identity In England And America, William A. Callahan

Research Collection School of Social Sciences

This essay examines the emergence of national identity in international society through the curious example of “National Humiliation Day,” a special holiday proclaimed by the head of state in wartime and celebrated in local churches throughout the nation. It argues that the observation of humiliation days produces the nation as the sacred political community because it figures both problems and solutions in a “national” time that is radically different from the dynastic and ecclesiastical times that defined medieval Europe. Unlike those who suggest that the Peace of Westphalia instituted a dramatic shift to an international system of secular states, the …

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Assimilation, Multiculturalism, Hybridity: The Dilemmas Of Ethnic Chinese In Post-Suharto Indonesia, Chang Yau Hoon Jun 2006

Assimilation, Multiculturalism, Hybridity: The Dilemmas Of Ethnic Chinese In Post-Suharto Indonesia, Chang Yau Hoon

Research Collection School of Social Sciences

The dominant discourse in accommodating the ethnic Chinese in Indonesia during Suharto's regime was one of assimilation, which forcefully aimed to absorb this minority into the national body. However, continuous official discrimination towards the Chinese placed them in a paradoxical position that made them an easy target of racial and class hostility. The May 1998 anti-Chinese riots proved the failure of the assmilationist policy. The process of democratization has given rise to a proliferation of identity politics in post-Suharto Indonesia. The policy of multiculturalism has been endorsed by Indonesia's current power holders as a preferred approach to rebuilding the nation, …

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Security Analysis On A Conference Scheme For Mobile Communications, Zhiguo Wan, Feng Bao, Robert H. Deng, A. L. Ananda Jun 2006

Security Analysis On A Conference Scheme For Mobile Communications, Zhiguo Wan, Feng Bao, Robert H. Deng, A. L. Ananda

Research Collection School Of Computing and Information Systems

The conference key distribution scheme (CKDS) enables three or more parties to derive a common conference key to protect the conversation content in their conference. Designing a conference key distribution scheme for mobile communications is a difficult task because wireless networks are more susceptible to attacks and mobile devices usually obtain low power and limited computing capability. In this paper we study a conference scheme for mobile communications and find that the scheme is insecure against the replay attack. With our replay attack, an attacker with a compromised conference key can cause the conferees to reuse the compromised conference key, …

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Mediators Without Borders: How Technology Is Leading The Charge To Globalised Dispute Resolution, Nadja Alexander Jun 2006

Mediators Without Borders: How Technology Is Leading The Charge To Globalised Dispute Resolution, Nadja Alexander

Research Collection Yong Pung How School Of Law

Mediation has made it to Hollywood. The opening scene of the romantic comedy The Wedding Crashers (2005) features a hilarious attempt at divorce mediation. The mediation scene does not demonstrate any mediation skills to be emulated and the film itself, apart from the opening scene, has nothing to do with mediation. Nevertheless one cannot ignore the power of the borderless dream machine called Hollywood. The Hollywood film industry does more than export films and fantasies around the world; it is a driving force in the globalisation of the themes with which it deals. When mediation becomes one of those themes …

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The Transition From Relational To Legal Contract Enforcement, Fali Huang Jun 2006

The Transition From Relational To Legal Contract Enforcement, Fali Huang

Research Collection School Of Economics

This paper studies the transition of contract enforcement institutions. The prevalence of relational contracts, low legal quality, strong cultural preference for personalistic relationships, low social mobility, and highly unequal endowment form a cluster of mutually reinforcing institutions that hinder economic development. The cultural element per se does not necessarily reduce social welfare though it may slow down the legal development, while the real problem lies in endowment inequality and low social mobility. Thus a more equal distribution of resources may be the ultimate key to unravel the above interlocking institutions. These results are generally consistent with the empirical evidence.

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A Spatial Analysis Of The Xiii Italian Legislature, Massimiliano Landi, Riccardo Pelizzo Jun 2006

A Spatial Analysis Of The Xiii Italian Legislature, Massimiliano Landi, Riccardo Pelizzo

Research Collection School Of Economics

We present a spatial map of the Italian House of Deputies during the XIII Legislature obtained by applying the Poole and Rosenthal methodology to roll call data. We estimate coordinates for almost all the 650 Deputies that were on the House’s floor at the time, and we aggregate them according to parties. We find that voting patters generate basically a two dimensional political space. The first dimension represents loyalty to either the ruling coalition or the opposing one. The second dimension is represented by the European Union. These findings are consistent with the exceptional case of the party Northern League, …

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Non-Fundamental Expectations And Economic Fluctuations: Evidence From Professional Forecasts, Keen Meng Choy, Kenneth Leong, Anthony S. Tay Jun 2006

Non-Fundamental Expectations And Economic Fluctuations: Evidence From Professional Forecasts, Keen Meng Choy, Kenneth Leong, Anthony S. Tay

Research Collection School Of Economics

It is theoretically possible that non-fundamental idiosyncratic shocks to agents’ rational expectations are a source of economic fluctuations. Studies using data on consumer and investor sentiment suggest that this is indeed an important source of fluctuations. We present the results of a study that uses forecasts from professional forecasters to extract non-fundamental shocks to expectations. In contrast to previous studies, we show that non-fundamental expectations are not a significant source of output fluctuations, although such shocks contributed to inflation.

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