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A Secure And Privacy Enhanced Location-Based Service Transaction Protocol In Ubiquitous Computing Environment, Konidala Divyan, Robert H. Deng, Jianying Zhou, Kwanjo Kim Jan 2004

A Secure And Privacy Enhanced Location-Based Service Transaction Protocol In Ubiquitous Computing Environment, Konidala Divyan, Robert H. Deng, Jianying Zhou, Kwanjo Kim

Research Collection School Of Computing and Information Systems

Nowadays mobile phones and PDAs are part and parcel of our lives. By carrying a portable mobile device with us all the time we are already living in partial Pervasive Computing Environment (PCE) that is waiting to be exploited very soon. One of the advantages of pervasive computing is that it strongly supports the deployment of Location-Based Service(s) (LBSs). In PCE, there would be many competitive service providers (SPs) trying to sell different or similar LBSs to users. In order to avail a particular service, it becomes very di#cult for a low-computing and resourcepoor mobile device to handle many such …

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Powerful Change Part 2: Reducing The Power Demands Of Mobile Devices, Rajesh Krishna Balan Jan 2004

Powerful Change Part 2: Reducing The Power Demands Of Mobile Devices, Rajesh Krishna Balan

Research Collection School Of Computing and Information Systems

Consumers expect their mobile devices to be small and light, have a decent battery lifetime, and still be powerful enough to run all their desired applications. The need to satisfy such consumer demands has driven mobile-device manufacturers to make products (such as PDAs and cell phones) that match these needs. However, this inevitably requires tradeoffs. Building smaller, lighter devices requires sacrificing the device's battery capacity because battery technology is still fairly dense and heavy, and contributes most of a mobile device's size and weight. But, mobile devices with the required resources to run useful desktop applications need additional battery power …

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Evaluating The Usability Of A Group Support System Using Co-Discovery, Keng Siau Jan 2004

Evaluating The Usability Of A Group Support System Using Co-Discovery, Keng Siau

Research Collection School Of Computing and Information Systems

Group Support Systems (GSSs) have emerged as a new type of information system to aid group decision-making. With the proliferation of such systems in organizations, evaluation of GSSs is becoming increasingly important. This paper reports the evaluation of an existing GSS. Our usability framework consists of nine dimensions: visual clarity, consistency, compatibility, informative feedback, explicitness, flexibility and control, error prevention and correction, ease of learning, and ease of use. We make use of the co-discovery method where teams of two participants perform tasks together while being observed. The study involves questionnaires and interview sessions. The strengths and weaknesses of the …

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Revisiting The Asian Values Argument Used By Asian Political Leaders And Its Validity, Chang Yau Hoon Jan 2004

Revisiting The Asian Values Argument Used By Asian Political Leaders And Its Validity, Chang Yau Hoon

Research Collection School of Social Sciences

No abstract provided.

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From Cannibalism To Empowerment: An Analects-Inspired Attempt To Balance Community And Liberty, Sor-Hoon Tan Jan 2004

From Cannibalism To Empowerment: An Analects-Inspired Attempt To Balance Community And Liberty, Sor-Hoon Tan

Research Collection School of Social Sciences

The Confucian tradition has often been credited with a strong allegiance to the value of community. It recognizes that certain goods might be attained through special forms of human association, but not by any solitary individual. Are such community goods attained at the expense of the liberty of individual members? Philosophers have struggled with the tension between liberty and community since the dawn of Western philosophy. Aristotle complained about the false idea of liberty as "doing what one likes," which is contradictory to the true interests of the polis.2 Such lib- erty, or rather license, is undoubtedly detrimental to any …

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Metaheuristics With Local Search Techniques For Retail Shelf-Space Optimization, Andrew Lim, Brian Rodrigues, Xingwen Zhang Jan 2004

Metaheuristics With Local Search Techniques For Retail Shelf-Space Optimization, Andrew Lim, Brian Rodrigues, Xingwen Zhang

Research Collection Lee Kong Chian School Of Business

Efficient shelf-space allocation can provide retailers with a competitive edge. While there has been little study on this subject, there is great interest in improving product allocation in the retail industry. This paper examines a practicable linear allocation model for optimizing shelf-space allocation. It extends the model to address other requirements such as product groupings and nonlinear profit functions. Besides providing a network flow solution, we put forward a strategy that combines a strong local search with a metaheuristic approach to space allocation. This strategy is flexible and efficient, as it can address both linear and nonlinear problems of realistic …

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Resource-Based Theory And Its Link To The Global Strategy, Structure And Performance Relationship: An Integrative Framework, Olivier Furrer, Jeffrey A. Krug, D. Sudharshan, Howard Thomas Jan 2004

Resource-Based Theory And Its Link To The Global Strategy, Structure And Performance Relationship: An Integrative Framework, Olivier Furrer, Jeffrey A. Krug, D. Sudharshan, Howard Thomas

Research Collection Lee Kong Chian School Of Business

The global strategy literature provides a basis for examining strategy, structure, and performance relationships in multinational firms. We develop a framework that examines these relationships and their linkages to the firm's intangible asset portfolio. Drawing on resource-based theory, this framework suggests that an on-going multinational firm's worldwide performance is dependent on the fit between its intangible asset portfolio, foreign market entry strategies, partner relationships, and worldwide organisational structure. Each of these dimensions can be linked back to the firm's worldwide strategy and the characteristics of its industry. Implications for research are discussed.

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Privatizing Telecoms And Residual State Influence On Financial Performance, Burkhard N. Schrage, Paul M. Vaaler Jan 2004

Privatizing Telecoms And Residual State Influence On Financial Performance, Burkhard N. Schrage, Paul M. Vaaler

Research Collection Lee Kong Chian School Of Business

We test competing theoretical perspectives explaining likely shareholder returns from material investment decisions announced by privatizing telecommunications firms (telecoms) with varying levels of residual state ownership. A principal-agent perspective suggests that decrease in residual state ownership in privatizing telecoms leads to more positive shareholder returns. Over time, this effect increases. An alternative credible privatization perspective suggests that retention of substantial (though not controlling) residual state ownership leads to more positive shareholder returns, but only in the short run. Over time this ownership effect fades quickly. We examine empirical support for these competing perspectives with an event study analyzing cumulative abnormal …

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Expert Knowledge And The Role Of Consultants In An Emerging Knowledge-Based Economy, Hans-Dieter Evers, Thomas Menkhoff Jan 2004

Expert Knowledge And The Role Of Consultants In An Emerging Knowledge-Based Economy, Hans-Dieter Evers, Thomas Menkhoff

Research Collection Lee Kong Chian School Of Business

In the emerging globalised knowledge society/economy, a group of professionals, namely experts and consultants gain in importance. The paper discusses the following issues: Who are these experts and consultants? Why is this group of knowledge workers strategically important and why is their importance - socially in terms of number of persons and economically in terms of output or turnover - growing? How can we explain the increasing professionalisation of consultants? How do they gain their expertise and which role does academic knowledge play in professional attainment? How do consultants package and apply expert knowledge? What are the challenges experts and …

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Procedural Priming Effects On Spontaneous Inference Formation, Kirmani Amma, Michelle P. Lee, Carolyn Yoon Jan 2004

Procedural Priming Effects On Spontaneous Inference Formation, Kirmani Amma, Michelle P. Lee, Carolyn Yoon

Research Collection Lee Kong Chian School Of Business

Procedural priming refers to how the frequent or recent use of certain cognitive procedures on one task can lead to a greater propensity to use the same procedures on a subsequent task. In this paper, we demonstrate how procedural priming may be used to assess spontaneous inference formation in situations where the inference involves a relationship or rule. We do so in the context of the advertising cost–product quality rule, i.e., that higher advertising expense implies higher product quality. Prior research suggests that underlying the advertising cost–quality rule is a basic human attribution (the effort investment rule) that says, if …

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Bias In The Correlated Uniqueness Model For Mtmm Data, James M. Conway, Filip Lievens, Steven E. Scullen, Charles E. Lance Jan 2004

Bias In The Correlated Uniqueness Model For Mtmm Data, James M. Conway, Filip Lievens, Steven E. Scullen, Charles E. Lance

Research Collection Lee Kong Chian School Of Business

This simulation investigates bias in trait factor loadings and intercorrelations when analyzing multitrait-multimethod (MTMM) data using the correlated uniqueness (CU) confirmatory factor analysis (CFA) model. A theoretical weakness of the CU model is the assumption of uncorrelated methods. However, previous simulation studies have shown little bias in trait estimates even when true method correlations are large. We hypothesized that there would be substantial bias when both method factor correlations and method factor loadings were large. We generated simulated sample data using population parameters based on our review of actual MTMM results. Results confirmed the prediction; substantial bias occurred in trait …

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A New Look At The Multiclass Network Equilibrium Problem, Patrice Marcotte, Laura Wynter Jan 2004

A New Look At The Multiclass Network Equilibrium Problem, Patrice Marcotte, Laura Wynter

Research Collection School Of Computing and Information Systems

The multiclass network equilibrium problem is expressed in general as a nonmonotone, asymmetric, variational inequality problem. We show that in spite of the nonmonotonicity of the cost operator, the problem may actually satisfy a weaker property, induced by the hierarchical nature of the travel cost interactions. This property allows a natural decomposition approach, not otherwise available, that admits provably convergent algorithms. We present one such algorithm, easily implementable using a solver for the single-class network equilibrium problem, together with a convergence proof.

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Java-Based Digital Library Portal For Geography Education, Zehua Liu, Hai Yuan, Ee Peng Lim, Ming Yin, Dion Hoe-Lian Goh, Yin-Leng Theng, Wee-Keong Ng Jan 2004

Java-Based Digital Library Portal For Geography Education, Zehua Liu, Hai Yuan, Ee Peng Lim, Ming Yin, Dion Hoe-Lian Goh, Yin-Leng Theng, Wee-Keong Ng

Research Collection School Of Computing and Information Systems

G-Portal is a Java-based digital library system for managing the metadata of geography related resources on the Web. In addition to providing a flexible repository subsystem to accommodate metadata of different formats using XML and XML Schemas, G-Portal organizes metadata into projects and layers, and supports an integrated and synchronized classification and map-based interfaces over the stored metadata. G-Portal also includes a classification subsystem that creates category structures and classifies metadata resources into categories based on user-specified classification schemas. Furthermore, G-Portal users can annotate resources and make their annotations available to others. In this paper, we describe the design and …

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Viscors: A Visual-Content Recommender For The Mobile Web, Chan Young Kim, Jae Kyu Lee, Yoon Ho Cho, Deok Hwan Kim Jan 2004

Viscors: A Visual-Content Recommender For The Mobile Web, Chan Young Kim, Jae Kyu Lee, Yoon Ho Cho, Deok Hwan Kim

Research Collection School Of Computing and Information Systems

Current search methods for mobile-Web content can be frustrating to use. To shorten searches for cell phone wallpaper images, VISCORS combines collaborative filtering with content-based image retrieval. An increasing selection of content is becoming available in the mobile-Web environment, where users navigate the Web using wireless devices such as cell phones and PDAs. The fast growth and excellent prospects of the mobile-Web content market have attracted many content providers.

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Supply Chains Integration: Architecture And Enabling Technologies, Keng Siau, Yuhong Tian Jan 2004

Supply Chains Integration: Architecture And Enabling Technologies, Keng Siau, Yuhong Tian

Research Collection School Of Computing and Information Systems

An effective and efficient supply chain is vital to the competitiveness and the survival of an organization. With the emergence of the e-business era, supply chain systems need to be able to extend beyond the traditional boundaries. This paper proposes integrated supply chain architecture (SCA) that combines the benefits of Enterprise Resource Planning (ERP) and the various supply chain applications. Some necessary criteria for an integrated supply chain include completeness, security, flexibility, scalability, and interoperability. The enabling technologies for such a supply chain system include XML, DCOM, CORBA, SOAP, Net, and Semantic Web. Wireless and mobile technologies could further extend …

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The Effects Of Perceived Identity And Justice Experiences With An Adr Institution On Managers’ Decisions, Shu-Cheng Chi, Hwa-Hwa Tsai, Ming-Hong Tsai Jan 2004

The Effects Of Perceived Identity And Justice Experiences With An Adr Institution On Managers’ Decisions, Shu-Cheng Chi, Hwa-Hwa Tsai, Ming-Hong Tsai

Research Collection School of Social Sciences

This study samples 78 business decision‐makers whose cases were part of an alternative dispute resolution (ADR) process, i.e., the Public Construction Commission (PCC), which operates under the government in Taiwan, between 1997 and early 2000. The authors propose an interaction between two variations of trust—category‐based trust and experience‐based trust—and hypothesize that decision‐makers’ perceived identity with new versus old government ideology and past justice experiences (with the PCC) would jointly affect their decision preferences. The results partially support these hypotheses. The authors emphasize the critic role of trustworthiness of the third‐party ADR providers. We conclude with a discussion of the implications …

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Logistics Outsourcing And 3pl Challenges, Michelle L. F. Cheong Jan 2004

Logistics Outsourcing And 3pl Challenges, Michelle L. F. Cheong

Research Collection School Of Computing and Information Systems

Logistics has been an important part of every economy and every business entity. The worldwide trend in globalization has led to many companies outsourcing their logistics function to Third-Party Logistics (3PL) companies, so as to focus on their core competencies. This paper attempts to broadly identify and categorize the challenges faced by 3PL companies and discover potential gaps for future research. Some of the challenges will be related with the experience and information collected from interviews with two 3PL companies.

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Multiparty Split-Ticket Voting Estimation As An Ecological Inference Problem, Kenneth Benoit, Michael Laver, Daniela Giannetti Jan 2004

Multiparty Split-Ticket Voting Estimation As An Ecological Inference Problem, Kenneth Benoit, Michael Laver, Daniela Giannetti

Research Collection School of Social Sciences

The estimation of vote splitting in mixed-member electoral systems is a common problem in electoral studies, where the goal of researchers is to estimate individual voter transitions between parties on two different ballots cast simultaneously. Because the ballots are cast separately and secretly, however, voter choice on the two ballots must be recreated from separately tabulated aggregate data. The problem is therefore of one of making ecological inferences. Because of the multiparty contexts normally found where mixed-member electoral rules are used, furthermore, the problem involves large-table (R × C) ecological inference. In this chapter we show how vote-splitting problems in …

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A Regional Approach To Human Security In East Asia: Global Debate, Regional Insecurity And The Role Of Civil Society, James T. H. Tang Jan 2004

A Regional Approach To Human Security In East Asia: Global Debate, Regional Insecurity And The Role Of Civil Society, James T. H. Tang

Research Collection School of Social Sciences

The concept of human security as a new paradigm presents a particular challenge for East Asia. While the region experienced dramatic political, economic and social transformations in the last few decades, much of the region’s key security concerns are state-focused. In fact East Asian regional security structures that are products of the Cold War era have remained largely intact.

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China’S Pragmatist Experiment: Hu Shih’S Pragmatism And Dewey’S Influence In China, Sor-Hoon Tan Jan 2004

China’S Pragmatist Experiment: Hu Shih’S Pragmatism And Dewey’S Influence In China, Sor-Hoon Tan

Research Collection School of Social Sciences

In the 1920s, John Dewey’s followers in China, led by his student HuShih, attempted to put his pragmatism into practice in their quest for democracy.This essay compares Hu Shih’s thought, especially his emphasis on pragmatism asmethod, with Dewey’s philosophical positions and evaluates Hu’s achievement asa pragmatist in the context of the tumultuous times he lived in. It assesses Hu’sclaim that the means to democracy lies in education rather than politics, sincedemocracy as a way of life requires a cultural renewal beyond institutionalchanges. It argues that a problem-centered approach to social change does notpreclude radical action, even revolution. But pragmatism is …

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Nationalism And Multiculturalism, Chandran Kukathas Jan 2004

Nationalism And Multiculturalism, Chandran Kukathas

Research Collection School of Social Sciences

If any issue dominates contemporary political theory, it is how to deal with cultural diversity and the claims –moral, legal, and political – made in the name of ethnic, religious, linguistic, or national allegiance (Kymlicka,2001: 17). Today, governments are confronted by demands from cultural minorities for recognition, protection,preferential treatment, and political autonomy within the boundaries of the state. Equally, international societyand its political institutions, as well as states themselves, have had to deal with demands from various peoplesfor political recognition as independent nations, and for national self-determination. The turbulent politics ofthe contemporary world may account in part for this development: …

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The Case For Open Immigration, Chandran Kukathas Jan 2004

The Case For Open Immigration, Chandran Kukathas

Research Collection School of Social Sciences

People favor or are opposed to immigration for a variety of reasons. It is therefore difficult to tie views about immigration to ideological positions. While it seems obviousthat political conservatives are the most unlikely to defend freedom of movement,and that socialists and liberals (classical and modern) are very likely to favor more openborders, in reality wariness (if not outright hostility) to immigration can be foundamong all groups. Even libertarian anarchists have advanced reasons to restrict themovement of peoples.

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Moore's Paradox And Self-Knowledge, John N. Williams Jan 2004

Moore's Paradox And Self-Knowledge, John N. Williams

Research Collection School of Social Sciences

What explanation is there of the source of my justification for my beliefs about my beliefs that respects the fact that I am normally the best authority on them? Moore's paradox demands an explanation of the absurdity of believing or asserting possible truths of the forms p but I don't believe that p or p but I believe that not-p. I argue for Evans principle that whatever justifies me in believing that p also justifies me in believing that I believe that p. This helps explain how I come to know my own beliefs and also shows that it is …

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Does The Parliament Make A Difference? The Role Of The Italian Parliament In Financial Policy, Carolyn Forestiere, Riccardo Pelizzo Jan 2004

Does The Parliament Make A Difference? The Role Of The Italian Parliament In Financial Policy, Carolyn Forestiere, Riccardo Pelizzo

Research Collection School of Social Sciences

A recent survey conducted in a sample of 83 countries by the Inter-Parliamentary Union in collaboration with the World Bank Institute on the Relations between the Legislature and the Executive in the Context of Parliamentary Oversight allows cross-national comparison for the role of legislatures in the budgetary process. One of the survey’s most significant indications is that legislatures in presidential systems are generally more involved in the preparation of the budget than legislatures in either parliamentary or semi-presidential systems. The picture, however, is very different when we look at legislatures’ oversight of the budget. Parliaments are generally more involved in …

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Tools For Legislative Oversight: An Empirical Investigation, Riccardo Pelizzo, Rick Stapenhurst Jan 2004

Tools For Legislative Oversight: An Empirical Investigation, Riccardo Pelizzo, Rick Stapenhurst

Research Collection School of Social Sciences

Parliaments are the institutions through which governments are held accountable to the electorate. They have a wide range of tools with which to carry out this oversight function, but until recently little analysis had been undertaken on the characteristics or use of such tools. This paper uses data for 83 countries that was collected in 2001 to investigate whether the oversight potential relates to three variables, namely the form of government (presidential, semi-presidential, or parliamentary), per capita income levels, and the level of democracy. The paper finds that oversight potential is greatly affected by the form of government, per capita …

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Trends In Parliamentary Oversight: Proceedings From A Panel At The 2004 Southern Political Science Association Conference, Riccardo Pelizzo, David Olson, Rick Stapenhurst Jan 2004

Trends In Parliamentary Oversight: Proceedings From A Panel At The 2004 Southern Political Science Association Conference, Riccardo Pelizzo, David Olson, Rick Stapenhurst

Research Collection School of Social Sciences

No abstract provided.

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From Principle To Practice: Constitutional Principles And The Transformation Of Party Finance In Germany And Italy, Riccardo Pelizzo Jan 2004

From Principle To Practice: Constitutional Principles And The Transformation Of Party Finance In Germany And Italy, Riccardo Pelizzo

Research Collection School of Social Sciences

The paper investigates the development of party finance and party finance legislation in Germany and Italy. The main claim of the paper is that the differences between German and Italian party finance reflect differences in the party finance legislation enacted in the two countries, which, in their turn, are a result of how the German and the Italian constitutional principles were translated into practice.

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Mediation On Trial: Ten Verdicts On Court-Related Adr, Nadja Alexander Jan 2004

Mediation On Trial: Ten Verdicts On Court-Related Adr, Nadja Alexander

Research Collection Yong Pung How School Of Law

This article critically evaluates the development of court-related mediation by reference to the evolution of ADR practice and theory. The author explores the divergent approaches taken in different jurisdictions to the relationship between ADR and court-based processes while referring to some similar phases of development and the varied empirical examinations of process. The integration of ADR into the 'mainstream' dispute resolution culture is also explored from the perspective of the diversity versus consistency of process debates while reflecting upon the variations in ADR usage between inquisitorial and more adversarial legal systems.

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Social Trust, Cooperation, And Human Capital, Fali Huang Jan 2004

Social Trust, Cooperation, And Human Capital, Fali Huang

Research Collection School Of Economics

The importance of social trust on economic growth has been suggested by many empirical works. This paper formalizes the concept of social trust and studies its formation process in a game theoretic setting. It provides plausible explanations for a wide range of empirical and experimental findings. The main results of the paper are as follows. For utility-maximizing players, cooperation arises in one-period prisoner’s dilemmas if and only if there is social trust. The amount of social trust in a given game is determined by the distribution of players’ cooperative tendency. Cooperative tendency is in essence a component of human capital …

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Congestion Control And Vehicle Ownership Restriction: The Choice Of An Optimal Quota Policy, Winston T. H. Koh Jan 2004

Congestion Control And Vehicle Ownership Restriction: The Choice Of An Optimal Quota Policy, Winston T. H. Koh

Research Collection School Of Economics

Singapore introduced a vehicle quota system (VQS) in 1990 as part of its overall policy to control urban congestion. While the VQS has reduced the annual growth rate of the vehicle population to about 3 per cent, it has created uncertainty in the cost of vehicle ownership due to the fluctuations in licence prices. This paper discusses three issues relating to the optimal design of a VQS: licence transferability, sub-categorisation, and the choice of an auction format. The analysis shows that licence transferability is not unambiguously desirable, sub-categorisation is highly regressive, and an open auction format results in less aggressive …

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