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Using Cognitive Mapping Techniques To Supplement Uml And Up In Information Requirements Determination, Keng Siau, Tan Xin Jan 2006

Using Cognitive Mapping Techniques To Supplement Uml And Up In Information Requirements Determination, Keng Siau, Tan Xin

Research Collection School Of Computing and Information Systems

Information requirements determination is a critical task in system development projects. Many human issues may hinder the efforts to accurately capture and clearly understand users' information requirements. In this paper, we review the cognitive underpinnings of some human issues, which are discussed in existing literature and relevant to information requirements determination. We then propose the use of cognitive mapping techniques in the process of information requirements determination. Three widely used cognitive mapping techniques - causal mapping, semantic mapping, and concept mapping – are briefly introduced in this article. A case is used to illustrate how to use these cognitive mapping …

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E-Healthcare In Abc County Health Department (Abcchd): Trade-Offs Analysis And Evaluation, Keng Siau, Hwee-Joo Kam Jan 2006

E-Healthcare In Abc County Health Department (Abcchd): Trade-Offs Analysis And Evaluation, Keng Siau, Hwee-Joo Kam

Research Collection School Of Computing and Information Systems

The issue of privacy stirred a tumultuous uproar when the ABC County Health Department (ABCCHD) was planning for an e-Healthcare system that utilized information technology to streamline the administration process of patients. ABCCHD had hired a software vendor, Info-Health, a company that specialized in information system development for the healthcare industry to help in the project. The privacy of patients with Sexually Transmitted Diseases/Human Immunity System was a thorny issue in the implementation of the e-Healthcare system. A trade-off between privacy and cost was discussed and debated. Three alternatives, with varying degrees of privacy and cost, were considered.

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Monolithic Integration Of Collimating Fresnel Lens For Beam Quality Enhancement In Tapered High Power Laser Diode, F. K. Lau, Chyng Wen Tee, X. Zhao, K. A. Williams, R. V. Penty, I. H. White, M. Calligaro, M. Lecomte, O. Parillaud, N. Michel, M. Krakowski Jan 2006

Monolithic Integration Of Collimating Fresnel Lens For Beam Quality Enhancement In Tapered High Power Laser Diode, F. K. Lau, Chyng Wen Tee, X. Zhao, K. A. Williams, R. V. Penty, I. H. White, M. Calligaro, M. Lecomte, O. Parillaud, N. Michel, M. Krakowski

Research Collection Lee Kong Chian School Of Business

We demonstrate, for the first time, a monolithic integrated lens for wide aperture gain-guided tapered laser beam quality enhancement by compensating the quadratic phase curvature. The 3mm long tapered laser with an output aperture of 170μm adopted in this design consists of a gain-guided tapered section and an index-guided ridge section and operated at 980nm. The lens design is implemented by focus ion beam etching (FIBE) technique, whereby the laser diode is mounted p-side up in order to facilitate the etching process. The lens is located 600μm away from the junction of the tapered and ridge sections, and is 40μm …

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Democracy And Oversight, Riccardo Pelizzo, Rick Stapenhurst Jan 2006

Democracy And Oversight, Riccardo Pelizzo, Rick Stapenhurst

Research Collection School of Social Sciences

In the course of the past decade, political science has started paying increasing attention to the study of legislative oversight, which had been previously been described as an important but inadequately researched area of legislative activity (Lees, 1977). Lees’ comment is particularly true with regard to comparative analyses of oversight tools and practices. Some studies have recently discussed the instruments of legislative oversight (Maffio, 2002), other studies have instead investigated how legislative oversight relates to both political variables (Pennings, 2000; Damgaard, 2000; Pelizzo and Stapenhurst, 2004a) and socio-economic conditions (Pelizzo and Stapenhurst, 2004b). In spite of this renewed interest in …

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Parliamentary Oversight For Government Accountability, Riccardo Pelizzo, Rick Stapenhurst, David Olson Jan 2006

Parliamentary Oversight For Government Accountability, Riccardo Pelizzo, Rick Stapenhurst, David Olson

Research Collection School of Social Sciences

No abstract provided.

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A Code Of Conduct For Indonesia: Problems And Perspectives, Riccardo Pelizzo, Bernice Ang Jan 2006

A Code Of Conduct For Indonesia: Problems And Perspectives, Riccardo Pelizzo, Bernice Ang

Research Collection School of Social Sciences

The purpose of the present paper is fairly straightforward. We want to show that institutional reforms, such as the adoption of a conduct code, represent a necessary albeit insufficient condition to curb corruption and promote good governance. As several scholars have pointed out the success of institutional reform in general and the success of codes of conduct in particular depends, among other things, on ideational conditions. With regard to codes of conduct, parliamentary ethics experts believe in fact that the success of a code of conduct depends on whether the individuals who are supposed to be regulated by the disposition …

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Public Accounts Committees, Riccardo Pelizzo, Rick Stapenhurst Jan 2006

Public Accounts Committees, Riccardo Pelizzo, Rick Stapenhurst

Research Collection School of Social Sciences

No abstract provided.

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Hybridizing Discrete- And Continuous-Time Models For Batch Sizing And Scheduling Problems, Siqun Wang, Monique Guignard Jan 2006

Hybridizing Discrete- And Continuous-Time Models For Batch Sizing And Scheduling Problems, Siqun Wang, Monique Guignard

Research Collection Lee Kong Chian School Of Business

This paper proposes a new hybrid technique called partial parameter uniformization (hereafter PPU). The technique simplifies problems by ignoring the different values that certain problem parameters can take, which may facilitate the solution of some hard combinatorial optimization problems. PPU is applied to complex batch sizing and scheduling problems. Some information can be obtained from a discrete-time model in which job durations have been made uniform. This information is then exploited by a more detailed continuous-time model to generate feasible solutions and further improve these solutions. Good, or optimal solutions to the Westenberger and Kallrath Benchmark problems have been obtained …

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The Systematic Nature Of Serendipity In Opportunity Discovery: Implications For The Theory Of Entrepreneurship, Reddi Kotha, Dimo Dimov, Gerard George Jan 2006

The Systematic Nature Of Serendipity In Opportunity Discovery: Implications For The Theory Of Entrepreneurship, Reddi Kotha, Dimo Dimov, Gerard George

Research Collection Lee Kong Chian School Of Business

This paper endeavors to disentangle search from serendipity in discoveries of new opportunities. Whereas economic models focus on active search and the tradeoff between its costs and benefits, the Austrian economic tradition posits that individuals do not search for opportunities; it is their alertness that helps them to profit from arbitrage opportunities from the imperfect decisions of others. Further, their alertness reflects their unique prior experience. Yet, despite the intuitive soundness of these ideas, some recent experimental empirical work to test them has highlighted the need for stronger theoretical precision. Are serendipitous solutions better than active search solutions? Can serendipitous …

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Change Leadership In Small Enterprises: Evidence From Singapore, Thomas Menkhoff, Yue Wah Chay Jan 2006

Change Leadership In Small Enterprises: Evidence From Singapore, Thomas Menkhoff, Yue Wah Chay

Research Collection Lee Kong Chian School Of Business

Leading change processes in an enterprise is a challenge for many entrepreneurs. Numerous elements influence the outcomes of such transformation processes, including the adopted change leadership style, the implementation skills of the entrepreneur, the particular scenario of change in terms of urgency of change and resistance, the scale of change as well as macro variables. This article sheds light on the change leadership approaches of small Chinese entrepreneurs in Singapore. It aims at examining widespread common-sense assumptions that æAsianÆ small entrepreneurs adopt mostly directive-coercive (autocratic) change leadership approaches. We argue that there is indeed a great diversity and heterogeneity amongst …

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Asymmetry Of Processing Trade In China : Theory And Empirics, Zhaopeng Xing Jan 2006

Asymmetry Of Processing Trade In China : Theory And Empirics, Zhaopeng Xing

Dissertations and Theses Collection (Open Access)

This paper studies decision of whether outsourcing or localization in China. Both strategies can enjoy low wage advantage. But outsourcing induces processing trade, while localization, which has additional localization cost can turn processing trade of some goods to ordinary trade. The asymmetric effect lies on that once localized, it is hard to return to outsourcing due to competition or fixed expenditures involved. If wage difference larger, it is more preferable to localized. Therefore, we can expect asymmetric effect of processing trade due to movement of relative wage difference, which was proved by econometrics on recent data by cointegrating analysis within …

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External Debt And Growth Dynamics, Si Chen Jan 2006

External Debt And Growth Dynamics, Si Chen

Dissertations and Theses Collection (Open Access)

Based on an extended growth model, this thesis further explores the joint dynamics between external debt and growth. The model explicitly expresses this growth dynamic mechanism incorporating external debt as an important explanatory variable with risk premium and other related structural factors. The interactions between external debt and growth are interpreted as directly and mainly through the channel of capital accumulation and indirectly through technology change. These constitute the functional form foundation to solve the main concern on the effect of external debt upon growth adjustment path. The numerical simulations of the model indicate that when external debt is assumed …

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The Information Efficiency Of The Corporate Bond Market, Cheng Ying Jan 2006

The Information Efficiency Of The Corporate Bond Market, Cheng Ying

Dissertations and Theses Collection (Open Access)

The link between asset prices and information fundamentals as embodied in news announcement effects is an extremely, if not the most, important area amongst current research in market microstructure. The lack of adequate transaction data posts an obstacle in this research. In this thesis, based on a valuable intraday transaction-by-transaction dataset for U.S. corporate bonds, we first examine the impact of public information contained in the macro-economic news and firm-specific information contained in corporate earnings annoucements on the prices of both corporate bonds and stocks. We find that both bonds and stocks react significantly to public news and firm-specific information, …

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A Survey On Networking Games In Telecommunications, E. Altman, T. Boulogne, R. El-Azouzi, T. Jiménez, Laura Wynter Jan 2006

A Survey On Networking Games In Telecommunications, E. Altman, T. Boulogne, R. El-Azouzi, T. Jiménez, Laura Wynter

Research Collection School Of Computing and Information Systems

In this survey, we summarize different modeling and solution concepts of networking games, as well as a number of different applications in telecommunications that make use of or can make use of networking games. We identify some of the mathematical challenges and methodologies that are involved in these problems. We include here work that has relevance to networking games in telecommunications from other areas, in particular from transportation planning.

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Labeling Genetically Modified Food: Comparative Law Studies From Consumer's Perspective, Christopher C. H. Chen Jan 2006

Labeling Genetically Modified Food: Comparative Law Studies From Consumer's Perspective, Christopher C. H. Chen

Research Collection Yong Pung How School Of Law

This article focus on the genetically modified food and labelling requirement. The relatively new technology raises some concerns over the safety of food containing genetically modified substance. The "substantial equivalent" doctrine, adopted by the U.S., and the "precautionary" doctrine, taken by the EU, represent two contradictory approaches to reconcile new biotechnology and consumer protection, a difference influenced by politics or food industry rather than by consumer attitudes. In this article, we argue that consumers cannot make their own choices and exercise market power without a certain degree of disclosure of information. However, even though food labelling is an effective way …

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The Paradox Of Corruption As Antithesis To Economic Development: Does Corruption Undermine Economic Development In Indonesia And China, And Why Are The Experiences Different In Each Country?, Andrew White Jan 2006

The Paradox Of Corruption As Antithesis To Economic Development: Does Corruption Undermine Economic Development In Indonesia And China, And Why Are The Experiences Different In Each Country?, Andrew White

Research Collection Yong Pung How School Of Law

The question of whether corruption is antithetical to economic development has been extensively researched and debated since the 1960s. While nearly all participants in the debate appear to agree that corruption ultimately is antithetical to long-term economic development, the extent to which it positively or negatively affects economic development in the short term depends upon highly contextual factors. In different countries and regions of the world, factors of local culture and history, the nature of the state, the type of corruption and actors involved, and the political responses and motivations to curtail corruption all inform the answer to this question. …

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Contract Law, Pey Woan Lee, Pearlie Koh, Chee Ho Tham Jan 2006

Contract Law, Pey Woan Lee, Pearlie Koh, Chee Ho Tham

Research Collection Yong Pung How School Of Law

The issue of contract formation arose in the unusual context of civil procedure in Wellmix Organics (International) Pte Ltd v Lau Yu Man [2006] 2 SLR 117 (see also para 10.60 on “Mistake”). The plaintiff in this case unsuccessfully sought to enforce a consent unless order against the defendant. Andrew Phang Boon Leong J (as he then was) emphasised that, keeping in view its very drastic consequence of depriving a party of his cause of action, such an order will only be established where the terms of the agreement are clear and unambiguous. It was clear on the facts that …

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Contract Law, Chee Ho Tham, Pearlie Koh, Pey Woan Lee Jan 2006

Contract Law, Chee Ho Tham, Pearlie Koh, Pey Woan Lee

Research Collection Yong Pung How School Of Law

The issue of contract formation arose in the unusual context of civil procedure in Wellmix Organics (International) Pte Ltd v Lau Yu Man [2006] 2 SLR 117 (see also para 10.60 on “Mistake”). The plaintiff in this case unsuccessfully sought to enforce a consent unless order against the defendant. Andrew Phang Boon Leong J (as he then was) emphasised that, keeping in view its very drastic consequence of depriving a party of his cause of action, such an order will only be established where the terms of the agreement are clear and unambiguous. It was clear on the facts that …

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Social In Social Entrepreneurship: Altruism And Entrepreneurship, Partners In Social Entrepreneurship, Wee Liang Tan, John Joseph Williams, Teck Meng Tan Jan 2006

Social In Social Entrepreneurship: Altruism And Entrepreneurship, Partners In Social Entrepreneurship, Wee Liang Tan, John Joseph Williams, Teck Meng Tan

Research Collection Lee Kong Chian School Of Business

No abstract provided.

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Interview With Michael Leathes, Nadja Alexander Jan 2006

Interview With Michael Leathes, Nadja Alexander

Research Collection Yong Pung How School Of Law

Alexander: Can you describe your professional role and how it relates to international mediation?Leathes: I have been an in-house counsel for most of my 36-year career, including general counsel of Pfizer International and of International Distillers & Vintners and general manager of BAT’s intellectual propertycompany. In all these roles I have been responsible for litigation portfolios internationally—in total, thousands of cases. Before I figured out a better way, I’m certain that I must have been responsible for about as many losses as wins. Then, in the late 80s, I discovered mediation…A: And what happened?L: Together with the teams of people …

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Mediating In The Shadow Of Australian Law: Structural Influences On Adr, Nadja Alexander Jan 2006

Mediating In The Shadow Of Australian Law: Structural Influences On Adr, Nadja Alexander

Research Collection Yong Pung How School Of Law

Mediation has grown rapidly in many Anglophone jurisdictions such as USA, Australia, Canada, New Zealand and England. The current state of mediation practice in many of these jurisdictions can be traced back to the establishment of community justice centres in the 1970s and 1980s. Mediation is practised in the private sector as well as in a wide range of court-referred programs. In many common law jurisdictions mediation is no longer a form of alternative dispute resolution, it has become primary dispute resolution.

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Parameter Inference Of Queueing Models For It Systems Using End-To-End Measurements, Laura Wynter, Cathy H. Xia, Fan Zhang Jan 2006

Parameter Inference Of Queueing Models For It Systems Using End-To-End Measurements, Laura Wynter, Cathy H. Xia, Fan Zhang

Research Collection School Of Computing and Information Systems

As Information Technology (IT) matures and expands in the scope of available applications, IT systems increase at a fascinating rate in both size and complexity. For example, today, a typical Web service hosting center may have hundreds of nodes and dozens of different applications simultaneously running on it. Each of the nodes in turn has often multiple processors and layered caches. These nodes make use of both local and shared storage systems. The size and complexity of such systems make performance modeling much more difficult, if at all tractable. Detailed modeling, fine tuning and accurate analysis can be carried out …

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Multiagent Teamwork: Hybrid Approaches, Praveen Paruchuri, Emma Bowring, Ranjit Nair, Jonathan Pearce, Nathan Schurr, Milind Tambe, Pradeep Varakantham Jan 2006

Multiagent Teamwork: Hybrid Approaches, Praveen Paruchuri, Emma Bowring, Ranjit Nair, Jonathan Pearce, Nathan Schurr, Milind Tambe, Pradeep Varakantham

Research Collection School Of Computing and Information Systems

Today within the multiagent community, we see at least four competing methods to building multiagent systems: beliefdesireintention (BDI), distributed constraint optimization (DCOP), distributed POMDPs, and auctions or game-theoretic methods. While there is exciting progress within each approach, there is a lack of cross-cutting research. This article highlights the various hybrid techniques for multiagent teamwork developed by the teamcore group. In particular, for the past decade, the TEAMCORE research group has focused on building agent teams in complex, dynamic domains. While our early work was inspired by BDI, we will present an overview of recent research that uses DCOPs and distributed …

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Towards Better Quality Specification Miners, David Lo, Siau-Cheng Khoo Jan 2006

Towards Better Quality Specification Miners, David Lo, Siau-Cheng Khoo

Research Collection School Of Computing and Information Systems

Softwares are often built without specification. Tools to automatically extract specification from software are needed and many techniques have been proposed. One type of these specifications – temporal API specification – is often specified in the form of automaton (i.e., FSA/PFSA). There have been many work on mining software temporal specification using dynamic analysis techniques; i.e., analysis of software program traces. Unfortunately, the issues of scalability, robustness and accuracy of these techniques have not been comprehensively addressed. In this paper, we describe a framework that enables assessments of the performance of a specification miner in generating temporal specification of software …

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Visualization For Analyzing Trajectory-Based Metaheuristic Search Algorithms, Steven Halim, Roland H. C. Yap, Hoong Chuin Lau Jan 2006

Visualization For Analyzing Trajectory-Based Metaheuristic Search Algorithms, Steven Halim, Roland H. C. Yap, Hoong Chuin Lau

Research Collection School Of Computing and Information Systems

No abstract provided.

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Efficient Mining Of Group Patterns From User Movement Data, Yida Wang, Ee Peng Lim, San-Yih Hwang Jan 2006

Efficient Mining Of Group Patterns From User Movement Data, Yida Wang, Ee Peng Lim, San-Yih Hwang

Research Collection School Of Computing and Information Systems

In this paper, we present a new approach to derive groupings of mobile users based on their movement data. We assume that the user movement data are collected by logging location data emitted from mobile devices tracking users. We formally define group pattern as a group of users that are within a distance threshold from one another for at least a minimum duration. To mine group patterns, we first propose two algorithms, namely AGP and VG-growth. In our first set of experiments, it is shown when both the number of users and logging duration are large, AGP and VG-growth are …

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The Role Of Parliaments In The Budget Process, Riccardo Pelizzo, Rick Stapenhurst, David Olson Jan 2006

The Role Of Parliaments In The Budget Process, Riccardo Pelizzo, Rick Stapenhurst, David Olson

Research Collection School of Social Sciences

No abstract provided.

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A Grapheme To Phoneme Converter For Standard Malay, Haizhou Li, Mahani Aljunied, Boon Seong Teoh Dec 2005

A Grapheme To Phoneme Converter For Standard Malay, Haizhou Li, Mahani Aljunied, Boon Seong Teoh

Research Collection Lee Kong Chian School Of Business

This paper describes the process of creating a grapheme-to-phoneme (G2P) converter for Standard Malay (SM). A fundamental step to building TTS and ASR engines, is to build a good G2P system that can automatically generate accurate phonemic representations for words. Our goal is to generate phonemes that reflect real speech, thereby facilitating more accurate phoneme alignment with actual waveforms (obtained from voice-data collection), keeping human intervention to the minimum. Here we discuss the key areas in SM that require considerable phonemic alterations including letter elisions, consonant insertions, multiple ways of uttering a letter/diagraph – areas that any good G2P system …

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Giving Users The Steering Wheel For Guiding Resource-Adaptive Systems, Joao Sousa, Rajesh Krishna Balan, Vahe Poladian, David Garlan, Mahadev Satyanarayanan Dec 2005

Giving Users The Steering Wheel For Guiding Resource-Adaptive Systems, Joao Sousa, Rajesh Krishna Balan, Vahe Poladian, David Garlan, Mahadev Satyanarayanan

Research Collection School Of Computing and Information Systems

Addressing resource variation plays an increasingly important role in engineering today's software systems. Research in resource-adaptive applications takes an important step towards addressing this problem. However, existing solutions stop short of addressing the fact that different user tasks often have specific goals of quality of service, and that such goals often entail multiple aspects of quality of service. This paper presents a framework for engineering software systems capable of adapting to resource variations in ways that are specific to the quality goals of each user task. For that, users are empowered to specify their task-specific preferences with respect to multiple …

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Matrix: Adaptive Middleware For Distributed Multiplayer Games, Rajesh Krishna Balan, Maria Ebling, Paul Castro, Archan Misra Dec 2005

Matrix: Adaptive Middleware For Distributed Multiplayer Games, Rajesh Krishna Balan, Maria Ebling, Paul Castro, Archan Misra

Research Collection School Of Computing and Information Systems

Building a distributed middleware infrastructure that provides the low latency required for massively multiplayer games while still maintaining consistency is non-trivial. Previous attempts have used static partitioning or client-based peer-to-peer techniques that do not scale well to a large number of players, perform poorly under dynamic workloads or hotspots, and impose significant programming burdens on game developers. We show that it is possible to build a scalable distributed system, called Matrix, that is easily usable by game developers. We show experimentally that Matrix provides good performance, especially when hotspots occur.

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