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Equality And Diversity, Chandran Kukathas Jun 2002

Equality And Diversity, Chandran Kukathas

Research Collection School of Social Sciences

The foundations of human inequality lie in the fact of human diversity, or in the human tendency to differentiate from some while associating with others to form groups. The diversity which results from association and differentiation makes equality unattainable. Diversity and equality are incompatible, and attempts to promote one can only be made at the expense of the other. In these circumstances, we should abandon the ideal of equality as incapable of offering us an adequate understanding of the nature of the good society.

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The Necessities And Luxuries Of Mate Preferences: Testing The Tradeoffs, Norman P. Li, J. Michael Bailey, Douglas T. Kenrick, Joan A. W. Linsenmeier Jun 2002

The Necessities And Luxuries Of Mate Preferences: Testing The Tradeoffs, Norman P. Li, J. Michael Bailey, Douglas T. Kenrick, Joan A. W. Linsenmeier

Research Collection School of Social Sciences

Social exchange and evolutionary models of mate selection incorporate economic assumptions but have not considered a key distinction between necessities and luxuries. This distinction can clarify an apparent paradox: Status and attractiveness, though emphasized by many researchers, are not typically rated highly by research participants. Three studies supported the hypothesis that women and men first ensure sufficient levels of necessities in potential mates before considering many other characteristics rated as more important in prior surveys. In Studies 1 and 2, participants designed ideal long-term mates, purchasing various characteristics with 3 different budgets. Study 3 used a mate-screening paradigm and showed …

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Minimum Energy Paths For Reliable Communication In Multi-Hop Wireless Networks, Suman Banerjee, Archan Misra Jun 2002

Minimum Energy Paths For Reliable Communication In Multi-Hop Wireless Networks, Suman Banerjee, Archan Misra

Research Collection School Of Computing and Information Systems

Current algorithms for minimum-energy routing in wireless networks typically select minimum-cost multi-hop paths. In scenarios where the transmission power is fixed, each link has the same cost and the minimum-hop path is selected. In situations where the transmission power can be varied with the distance of the link, the link cost is higher for longer hops; the energy-aware routing algorithms select a path with a large number of small-distance hops. In this paper, we argue that such a formulation based solely on the energy spent in a single transmission is misleading --- the proper metric should include the total energy …

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Idmp: An Intradomain Mobility Management Protocol For Next-Generation Wireless Networks, Subir Das, Anthony Mcauley, Ashutosh Dutta, Archan Misra, Sajal K. Das Jun 2002

Idmp: An Intradomain Mobility Management Protocol For Next-Generation Wireless Networks, Subir Das, Anthony Mcauley, Ashutosh Dutta, Archan Misra, Sajal K. Das

Research Collection School Of Computing and Information Systems

This paper describes a lightweight Intra-domain Management Protocol (IDMP) for managing mobility within a domain, commonly known as micro-mobility management, for next generation wireless networks. IDMP is modular and simple because it leverages existing protocols, such as Mobile IP or SIP (Session Initiated Protocol) as global mobility management, for locating roaming nodes. Unlike other proposed intra-domain mobility management schemes, IDMP uses two dynamically autoconfigured care-of addresses (CoAs) for routing the packets destined to mobile nodes. The global care-of address (GCoA) is relatively stable and identifies the mobile node’s attachment to the current domain, while the local care-of address (LCoA) changes …

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Client Perspectives Of Multicultural Counselling Competence: A Qualitative Examination, Donald B. Pope-Davis, Rebecca L. Toporek, Lideth Ortega-Villalobos, Daniela P. Ligiero, Christopher S. Brittan-Powell, William Liu, Michael R. Bashshur, Jamila N. Codrington, Christopher T. H. Liang May 2002

Client Perspectives Of Multicultural Counselling Competence: A Qualitative Examination, Donald B. Pope-Davis, Rebecca L. Toporek, Lideth Ortega-Villalobos, Daniela P. Ligiero, Christopher S. Brittan-Powell, William Liu, Michael R. Bashshur, Jamila N. Codrington, Christopher T. H. Liang

Research Collection Lee Kong Chian School Of Business

Multicultural competence is a burgeoning area of research in counseling psychology. However, there has been little focus on understanding multicultural competence from the perspective of clients. This study used qualitative interviews and grounded theory to develop a model of clients’ perspectives of multicultural counseling. The resulting model suggested that clients’ experiences of multicultural counseling were contingent on their self-identified needs and on how well they felt the counselor met these needs. Moreover, clients appeared to actively manage and moderate the extent to which culture was broached in counseling based on a host of conditions including counseling relationship, salience of identity, …

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Markov Chains In Predictive Models Of Currency Crises - With Applications To Southeast Asia, Roberto S. Mariano, Abdul G. Abiad, Gultekin Bulent, Tayyeb Shabbir, Augustine H. H. Tan May 2002

Markov Chains In Predictive Models Of Currency Crises - With Applications To Southeast Asia, Roberto S. Mariano, Abdul G. Abiad, Gultekin Bulent, Tayyeb Shabbir, Augustine H. H. Tan

Research Collection School Of Economics

The decade of the 1990s was marked by an unusual number of financial and economic crises such as the attack on the European Monetary System in 1992-93, the Mexican peso crisis in 1994-95, the Asian crisis in 1997, the Russian default in 1998 and its spillover to Latin America. The Turkish currency and banking crisis in 2001 and the recent difficulties in Argentina indicate that financial crises are still part of the current economic events. In the wake of such developments, there has been a resurgence of interest in early warning systems that can anticipate the likely occurrence of such …

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Investing In Hedge Funds: Risks, Returns And Pitfalls, Francis Koh, Winston T. H. Koh, David Kuo Chuen Lee, Kok Fai Phoon May 2002

Investing In Hedge Funds: Risks, Returns And Pitfalls, Francis Koh, Winston T. H. Koh, David Kuo Chuen Lee, Kok Fai Phoon

Research Collection Lee Kong Chian School Of Business

Hedge funds are collective investment vehicles fast becoming popular with high net worth individuals as well as institutional investors. These are funds that are often established with a special legal status that allows their investment managers a free hand to use derivatives, short sell, and exploit leverage to raise returns and cushion risk. Given that that they have substantial latitude to invest, it is instructive to examine the performance of hedge funds compared to other forms of managed funds. This paper provides an overview of hedge funds and discusses their empirical risk and return profiles. It also poses some concerns …

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Driving In Traffic: Short-Range Sensing For Urban Collision Avoidance, Chuck Thorpe, Dave Duggins, Jay Gowdy, Rob Maclaughlin, Christoph Mertz, Mel Siegel, Arne Suppe, Bob Wang, Teruko Yata Apr 2002

Driving In Traffic: Short-Range Sensing For Urban Collision Avoidance, Chuck Thorpe, Dave Duggins, Jay Gowdy, Rob Maclaughlin, Christoph Mertz, Mel Siegel, Arne Suppe, Bob Wang, Teruko Yata

Research Collection School Of Computing and Information Systems

Intelligent vehicles are beginning to appear on the market, but so far their sensing and warning functions only work on the open road. Functions such as runoff-road warning or adaptive cruise control are designed for the uncluttered environments of open highways. We are working on the much more difficult problem of sensing and driver interfaces for driving in urban areas. We need to sense cars and pedestrians and curbs and fire plugs and bicycles and lamp posts; we need to predict the paths of our own vehicle and of other moving objects; and we need to decide when to issue …

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An Evaluation Of Hedge Funds: Risk, Return And Pitfalls, Francis Koh, David K. C. Lee, Kok Fai Phoon Apr 2002

An Evaluation Of Hedge Funds: Risk, Return And Pitfalls, Francis Koh, David K. C. Lee, Kok Fai Phoon

Research Collection Lee Kong Chian School Of Business

Hedge funds are collective investment vehicles fast becoming popular with high net worth individuals as well as institutional investors. These are funds that are often established with a special legal status that allows their investment managers a free hand to use derivatives, short sell and exploit leverage to raise returns and cushion risk. Given that they have substantial latitude to invest, it is instructive to examine the performance of hedge funds as compared to other forms of managed funds. This paper provides an overview of hedge funds and discusses their empirical risk and return profiles. It also poses some concerns …

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Letters Of Comfort Revisited, Pey Woan Lee Apr 2002

Letters Of Comfort Revisited, Pey Woan Lee

Research Collection Yong Pung How School Of Law

Since the English Court of Appeal’s decision in Kleinwort Benson Ltd v. Malaysia Mining Corp. Bhd, it would be understandable if the business community placed little or no reliance on letters of comfort save in the exceptional case where the terms evince an undeniably clear intention to create binding obligations. It might therefore seem somewhat surprising that an experienced and sophisticated institution should commence proceedings in the High Court of Singapore on the premise of a letter of awareness in Hongkong and Shanghai Banking Corporation Ltd v. Jurong Engineering Ltd. This could plausibly be explained as the bank’s last-ditch attempt …

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A Class Of Nonlinear Stochastic Volatility Models, Jun Yu, Zhenlin Yang Apr 2002

A Class Of Nonlinear Stochastic Volatility Models, Jun Yu, Zhenlin Yang

Research Collection School Of Economics

This paper proposes a class of nonlinear stochastic volatility models based on the Box-Cox transformation which offers an alternative to the one introduced in Andersen (1994). The proposed class encompasses many parametric stochastic volatility models that have appeared in the literature, including the well known lognormal stochastic volatility model, and has an advantage in the ease with which different specifications on stochastic volatility can be tested. In addition, the functional form of transformation which induces marginal normality of volatility is obtained as a byproduct of this general way of modeling stochastic volatility. The efficient method of moments approach is used …

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Multi-Level Modeling Of Software On Hardware In Concurrent Computation, Joann M. Paul, Arne Suppe, Henele I. Adams, Donald E. Thomas Apr 2002

Multi-Level Modeling Of Software On Hardware In Concurrent Computation, Joann M. Paul, Arne Suppe, Henele I. Adams, Donald E. Thomas

Research Collection School Of Computing and Information Systems

The fundamental modeling differences between hardware and software modeling can be thought of as reasoning about connectedness vs. reasoning about interleaved (shared) access to resources. A natural design hierarchy for physical systems is component-based because of the existence of a consistent basis for interconnect between design levels. However, performance modeling and design of concurrent, programmable systems require new ways of thinking about what it means to abstract detail, add detail and partition a model of software executing on hardware. We motivate frequency interleaving (FI) as a common simulation foundation for these systems because it resolves flow and partitioning with software …

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The Endogeneity Problem In Electoral Studies: A Critical Re-Examination Of Duverger's Mechanical Effect, Kenneth Benoit Mar 2002

The Endogeneity Problem In Electoral Studies: A Critical Re-Examination Of Duverger's Mechanical Effect, Kenneth Benoit

Research Collection School of Social Sciences

Studies of electoral law consequences typically treat electoral laws as exogenous factors affecting political party systems, even while acknowledging that political parties often tailor electoral institutions to suit their own distributional needs. This study represents a departure from that approach, directly examining one aspect of the endogeneity of electoral systems: the endogeneity of Duverger's ‘mechanical’ effect. Theory clearly posits that the Duvergerian ‘psychological’ effect of electoral rules occurs in anticipation of their reductive mechanical effect, yet in empirical models this endogenous character is typically ignored. In this paper I formalize the two types of Duvergerian effects of electoral laws in …

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Mrpc: Maximizing Network Lifetime For Reliable Routing In Wireless Environments, Archan Misra, Suman Banerjee Mar 2002

Mrpc: Maximizing Network Lifetime For Reliable Routing In Wireless Environments, Archan Misra, Suman Banerjee

Research Collection School Of Computing and Information Systems

We propose MRPC, a new power-aware routing algorithm for energy-efficient routing that increases the operational lifetime of multi-hop wireless networks. In contrast to conventional power-aware algorithms, MRPC identifies the capacity of a node not just by its residual battery energy, but also by the expected energy spent in reliably forwarding a packet over a specific link. Such a formulation better captures scenarios where link transmission costs also depend on physical distances between nodes and the link error rates. Using a max-min formulation, MRPC selects the path that has the largest packet capacity at the 'critical' node (the one with the …

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Networked Growth, Hing-Man Leung Mar 2002

Networked Growth, Hing-Man Leung

Research Collection School Of Economics

This paper searches for a new growth engine in the new Info-Tech economy. IT-network effects are incorporated into Romer’s (1990) framework. Network effects support long-term steady state growth in per capita variables even without innovation, and growth rate increases with network externalities. Networked growth is sub-optimal, so should we break up an IT monopoly? To answer this we compare monopoly, Cournot and Bertrand set-ups. Cournot always ranks last socially, but Bertrand can be superior to monopoly if network effects are strong. When network interacts with Romer’s endogenous innovation, growth rate increases, probably by up to a percentage point per year.

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Plate Vibration Under Irregular Internal Supports, Yibao Zhao, G. W. Wei, Y. Xiang Mar 2002

Plate Vibration Under Irregular Internal Supports, Yibao Zhao, G. W. Wei, Y. Xiang

Research Collection Lee Kong Chian School Of Business

This paper studies the problem of plate vibration under complex and irregular internal support conditions. Such a problem has its widely spread industrial applications and has not been addressed in the literature yet, partially due to the numerical difficulties. A novel computational method, discrete singular convolution (DSC), is introduced for solving this problem. The DSC algorithm exhibits controllable accuracy for approximations and shows excellent flexibility in handling complex geometries, boundary conditions and internal support conditions. Convergence and comparison studies are carried out to check the validity and accuracy of the DSC method. Case studies are considered to the combination of …

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An Intelligent Middleware For Linear Correlation Discovery, Cecil Chua, Roger Hsiang-Li Chiang, Ee Peng Lim Mar 2002

An Intelligent Middleware For Linear Correlation Discovery, Cecil Chua, Roger Hsiang-Li Chiang, Ee Peng Lim

Research Collection School Of Computing and Information Systems

Although it is widely accepted that research from data mining, knowledge discovery, and data warehousing should be synthesized, little research addresses the integration of existing data management and analysis software. We develop an intelligent middleware that facilitates linear correlation discovery, the discovery of associations between attributes and attribute groups. This middleware integrates data management and data analysis tools to improve traditional data analysis in three perspectives: (1) identify appropriate linear correlation functions to perform based on the semantics of a data set; (2) execute appropriate functions contained in the data analysis packages; and (3) derive useful knowledge from data analysis.

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Idmp-Based Fast Handoffs And Paging In Ip-Based 4g Mobile Networks, Archan Misra, Subir Das, Anthony Mcauley, Sajal K. Das Mar 2002

Idmp-Based Fast Handoffs And Paging In Ip-Based 4g Mobile Networks, Archan Misra, Subir Das, Anthony Mcauley, Sajal K. Das

Research Collection School Of Computing and Information Systems

We consider the use of our previously proposed Intra-Domain Mobility Management Protocol (IDMP) in fourth-generation mobile networks. On evaluating the heterogeneous access technologies, cellular layouts, and application characteristics of 4G environments, we realize a need to reduce both handoff latency and the frequency of mobility-related signaling. We first present IDMP's fast intradomain handoff mechanism that uses a duration-limited proactive packet multicasting solution. We quantify the expected buffering requirements of our proposed multicasting scheme for typical 4G network characteristics and compare it with alternative IP-based fast handoff solutions. We also present a paging scheme under IDMP that replicates the current cellular …

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B2b E-Commerce Revisited: Leading Perspectives On The Key Issues And Research Directions, Qizhi Dai, Robert J. Kauffman Mar 2002

B2b E-Commerce Revisited: Leading Perspectives On The Key Issues And Research Directions, Qizhi Dai, Robert J. Kauffman

Research Collection School Of Computing and Information Systems

The application of Internet technologies for the conduct of interfirm business transactions has given rise to a boom in business-to-business (B2B) electronic commerce. Yet, although there are many success stories that have been reported over the past several years, the progress of B2B e-commerce has been hindered by unanticipated technical, organizational, economic and legal challenges that diminish value. In this article, we report on a series of interviews with leading academic researchers and industry senior managers who are in a unique position to make sense of key issues and offer useful insights. The respondents provide their views on the efficacy …

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Isotonic Designs For Phase I Trials, Denis H. Y. Leung, You-Gan Wang Feb 2002

Isotonic Designs For Phase I Trials, Denis H. Y. Leung, You-Gan Wang

Research Collection School Of Economics

The purpose of a phase I trial in cancer is to determine the level (dose) of the treatment under study that has an acceptable level of adverse effects. Although substantial progress has recently been made in this area using parametric approaches, the method that is widely used is based on treating small cohorts of patients at escalating doses until the frequency of toxicities seen at a dose exceeds a predefined tolerable toxicity rate. This method is popular because of its simplicity and freedom from parametric assumptions. In this paper, we consider cases in which it is undesirable to assume a …

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Experimenting With Server-Aided Signatures, Xuhua Ding, D. Mozzacchi, Gene Tsudik Feb 2002

Experimenting With Server-Aided Signatures, Xuhua Ding, D. Mozzacchi, Gene Tsudik

Research Collection School Of Computing and Information Systems

This paper explores practical and conceptual implications of using Server-Aided Signatures (SAS). SAS is a signature method that relies on partiallytrusted servers for generating public key signatures for regular users. Besides its two primary goals of 1) aiding small, resource-limited devices in computing heavy-weight (normally expensive) digital signatures and 2) fast certificate revocation, SAS also o#ers signature causality and has some interesting features such as built-in attack detection for users and DoS resistance for servers.

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Five Trends In Presidential Rhetoric: An Analysis Of Rhetoric From George Washington To Bill Clinton, Elvin T. Lim Feb 2002

Five Trends In Presidential Rhetoric: An Analysis Of Rhetoric From George Washington To Bill Clinton, Elvin T. Lim

Research Collection School of Social Sciences

Several political scientists have argued that the presidential recourse to public rhetoric as a mode of political influence in the twentieth century represents a significant departure from a pre-twentieth-century institutional norm where “going public” was both rare and frowned upon. This article looks specifically at the changes in the substance of rhetoric that have accompanied this alleged institutional transformation. Applying computer-assisted content analysis to all the inaugural addresses and annual messages delivered between 1789 and 2000, the author identifies and explores five significant changes in twentieth-century presidential rhetoric that would qualifiedly support the thesis of institutional transformation in its rhetorical …

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Externalism And Knowledge Of Comparative Content, Yoo Guan Tan Jan 2002

Externalism And Knowledge Of Comparative Content, Yoo Guan Tan

Research Collection School of Social Sciences

Concepts are the constituents of thoughts, which in turn, are the contents of propositional attitudes. They are also what the predicates of our language express. According to a tradition going back to Plato, questions about comparative content – questions of the form Is concept F the same as concept G? – are purely about relations of ideas, and so are answerable a priori. This does not mean that no experience at all is necessary to answer such questions, for experience may be needed to grasp their content. Call a piece of information about Fs extraneous if it is not required …

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Ethical Pluralism From A Classical Liberal Perspective, Chandran Kukathas Jan 2002

Ethical Pluralism From A Classical Liberal Perspective, Chandran Kukathas

Research Collection School of Social Sciences

Is the ideal society one that embodies or aims for ethical uniformity, orone that emphasizes instead the accommodation of ethical pluralism?From a classical liberal perspective the answer can only be that ethicalpluralism should be accommodated.

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Enhancing Profiles For Anomaly Detection Using Time Granularities, Yingjiu Li, Ningning Wu, X. Sean Wang, Sushil Jajodia Jan 2002

Enhancing Profiles For Anomaly Detection Using Time Granularities, Yingjiu Li, Ningning Wu, X. Sean Wang, Sushil Jajodia

Research Collection School Of Computing and Information Systems

Recently, association rules have been used to generate profiles of normal behavior for anomaly detection. However, the time factor (especially in terms of multiple time granularities) has not been utilized extensively in generation of these profiles. In reality, user behavior during different time intervals may be very different. For example, the normal number and duration of FTP connections may vary from working hours to midnight, from business day to weekend or holiday. Furthermore, these variations may depend on the day of the month or the week. This paper proposes to build profiles using temporal association rules in terms of multiple …

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An Examination Of The Accuracy Of Slogans Related To Assessment Centres, Filip Lievens Jan 2002

An Examination Of The Accuracy Of Slogans Related To Assessment Centres, Filip Lievens

Research Collection Lee Kong Chian School Of Business

To diffuse new management fads or to promote existing management practices slogans are often used. In this study eight slogans regarding assessment centres were retrieved from brochures of consultancy agencies and were compared to empirical research. These slogans were that assessment centres work, are expensive, fair, have a potent influence on candidates, protide insight into candidates' personality, and are not prone to trainability effects. Other slogans include that trained assessors speak the same language and that candidate reactions are positive. Resulting from this comparison a more fine-grained picture of the strengths and weaknesses of assessment centres emerges. In particular, it …

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Das Wirtschaftsimperium Der Ethnisch Chinesischen Unternehmer In Südostasien Zwischen Kontinuität Und Wandel (In German), Thomas Menkhoff Jan 2002

Das Wirtschaftsimperium Der Ethnisch Chinesischen Unternehmer In Südostasien Zwischen Kontinuität Und Wandel (In German), Thomas Menkhoff

Research Collection Lee Kong Chian School Of Business

Der Beitrag beschäftigt sich mit den wenig erforschten, komplexen Wechselwirkungen zwischen der rapide voranschreitenden globalen Marktvergesellschaftung einerseits sowie den Marktkulturen in Südostasien, in denen ethnischchinesische Unternehmer, Geschäftsleute und Händler mit ihren Familienkonglomeraten und Handelsnetzwerken eine prominente Rolle spielen. Ausgehend von der Asienkrise 1997-99, die eine deutliche Zäsur für ethnisch-chinesisches Wirtschaftshandeln in der Region darstellt, werden die Auswirkungen der rapiden Wandlungsprozesse auf das ethnisch-chinesische Unternehmertum in der Region und deren sozio-ökonomische Beziehungsnetzwerke skizziert sowie unternehmerische Anpassungsstrategien aufgezeigt. Der Beitrag schliesst mit einer kurzen Prognose über die Zukunft des chinesischen Kapitalismus in Asien.

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Neyman's Smooth Test And Its Applications In Econometrics, Anil K. Bera, Aurobindo Ghosh Jan 2002

Neyman's Smooth Test And Its Applications In Econometrics, Anil K. Bera, Aurobindo Ghosh

Research Collection School Of Economics

No abstract provided.

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A Small-Sample Overlapping Variance-Ratio Test, Yiu Kuen Tse, K. W. Ng, Xibin Zhang Jan 2002

A Small-Sample Overlapping Variance-Ratio Test, Yiu Kuen Tse, K. W. Ng, Xibin Zhang

Research Collection School Of Economics

The null distribution of the overlapping variance-ratio (OVR) test of the random-walk hypothesis is known to be downward biased and skewed to the right in small samples. As shown by Lo and MacKinlay (1989), the test under-rejects the null on the left tail seriously when the sample size is small. This unfortunate property adversely affects the applicability of the OVR test to macroeconomic time series, which usually have rather small samples. In this paper we propose a modified overlapping variance-ratio statistic and derive its exact mean under the normality assumption. We propose to approximate the small-sample distribution of the modified …

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Monitoring Process Variability With Symmetric Control Limits, Zhenlin Yang Jan 2002

Monitoring Process Variability With Symmetric Control Limits, Zhenlin Yang

Research Collection School Of Economics

Control charts for monitoring process variability, such as the R-chart and S-chart, do not have symmetric probability limits as the distribution of the sample variability is not normal. Hence, the usual zone rules can not be applied although it is still desirable to be able to use the information from more than one point in decision making. In this paper, a modified S-chart based on an optimal normalizing transformation of the sample variance is first introduced. The new chart is shown to have approximate symmetric probability limits and hence can be interpreted in the same way as that of a …

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