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Mobile Commerce Applications In Supply Chain Management, Keng Siau, Zixing Shen May 2002

Mobile Commerce Applications In Supply Chain Management, Keng Siau, Zixing Shen

Research Collection School Of Computing and Information Systems

As wireless technologies evolve, the coming mobile revolution will bring dramatic and fundamental changes to supply chain management. When complete, the revolution will impact numerous facets of organizational life. It will provide important data in real time to assist decision makers, exert great influence on the ways businesses communicate and develop relationships with consumers and suppliers, and ultimately transform the way we manage the supply chain. This paper examines issues in integrating mobile commerce and supply chain management. The paper discusses issues such as the absence of killer applications, mobile device limitations, networking problems, infrastructure constraints, security concerns, and user …

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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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Absorptive Capacity: A Review, Reconceptualization, And Extension, Shaker A. Zahra, Gerard George Apr 2002

Absorptive Capacity: A Review, Reconceptualization, And Extension, Shaker A. Zahra, Gerard George

Research Collection Lee Kong Chian School Of Business

Researchers have used the absorptive capacity construct to explain various organizational phenomena. In this article we review the literature to identify key dimensions of absorptive capacity and offer a reconceptualization of this construct. Building upon the dynamic capabilities view of the firm, we distinguish between a firm's potential and realized capacity. We then advance a model outlining the conditions when the firm's potential and realized capacities can differentially influence the creation and sustenance of its competitive advantage.

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A New Coincident Index Of Business Cycles Based On Monthly And Quarterly Series, Roberto S. Mariano, Yasutomo Murasawa Apr 2002

A New Coincident Index Of Business Cycles Based On Monthly And Quarterly Series, Roberto S. Mariano, Yasutomo Murasawa

Research Collection School Of Economics

Popular monthly coincident indices of business cycles, e.g. the composite index and the Stock-Watson coincident index, have two shortcomings. First, they ignore information contained in quarterly indicator such as real GPD. Second, they lack economic interpretation; hence the heights of peaks and the depths of troughs depend on the choice of an index. This paper extends the Stock-Watson coincident index by applying maximum likelihood factor analysis to a mixed-frequency series of quarterly real GDP and monthly coincident business cycle indicators. The resulting index is related to latent monthly real GDP.

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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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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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Recent Developments In The Law Of Comparative Advertising In Italy: Towards An Effective Enforcement Of The Principles Of Directive 97/55/Ec Under The New Regime?, Irene Calboli Apr 2002

Recent Developments In The Law Of Comparative Advertising In Italy: Towards An Effective Enforcement Of The Principles Of Directive 97/55/Ec Under The New Regime?, Irene Calboli

Research Collection Yong Pung How School Of Law

On February 25, 2000, the Italian Government adopted Legislative Decree No. 67, which enacted Directive 97/55/EC amending Directive 84/450/EEC concerning misleading advertising, so as to include comparative advertising. Contrary to what one could have expected in a country that has traditionally banned comparison in advertisements, Italy was one of the first among the Member States to implement Directive 97/55/EC. In order to allow consistent enforcement practices, however, the adoption of the new law must be followed by a profound change in the ways Italian courts and legal operators have approaches this issue so far. This Article explore this issue and …

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A New Approach For Weighted Constraint Satisfaction, Hoong Chuin Lau Apr 2002

A New Approach For Weighted Constraint Satisfaction, Hoong Chuin Lau

Research Collection School Of Computing and Information Systems

We consider the Weighted Constraint Satisfaction Problem which is an important problem in Artificial Intelligence. Given a set of variables, their domains and a set of constraints between variables, our goal is to obtain an assignment of the variables to domain values such that the weighted sum of satisfied constraints is maximized. In this paper, we present a new approach based on randomized rounding of semidefinite programming relaxation. Besides having provable worst-case bounds for domain sizes 2 and 3, our algorithm is simple and efficient in practice, and produces better solutions than some other polynomial-time algorithms such as greedy and …

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Prof Roberto S. Mariano Appointed New Dean At Singapore Management University, Singapore Management University Mar 2002

Prof Roberto S. Mariano Appointed New Dean At Singapore Management University, Singapore Management University

SMU Press Releases and News

No abstract provided.

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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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Technology Selection And Commitment In New Product Development: The Role Of Uncertainty And Design Flexibility, V. Krishnan, Shantanu Bhattacharya Mar 2002

Technology Selection And Commitment In New Product Development: The Role Of Uncertainty And Design Flexibility, V. Krishnan, Shantanu Bhattacharya

Research Collection Lee Kong Chian School Of Business

Selecting the right technologies to incorporate in new products is a particularly challenging aspect of new product definition and development. While newer advanced technologies may offer improved performance, they also make the product development process more risky and challenging. In this paper, we focus on the problem of technology selection and commitment under uncertainty, a major challenge to firms in turbulent environments. We argue that the ''pizza-bin'' approach of rejecting prospective technologies outright may not serve firms well when the pressure to differentiate products is enormous. After motivating the challenges and decisions facing firms using a real-life application from Dell …

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Social Entrepreneurship In Singapore (German Version), Wee Liang Tan, Teck Meng Tan Mar 2002

Social Entrepreneurship In Singapore (German Version), Wee Liang Tan, Teck Meng Tan

Research Collection Lee Kong Chian School Of Business

No abstract provided.

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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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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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Less Developed Country Business Cycles, Hing-Man Leung Mar 2002

Less Developed Country Business Cycles, Hing-Man Leung

Research Collection School Of Economics

Less developed countries (LDCs) have experienced considerable business cycles in recent decades. This coincides with significant increases in their external debt to GDP ratios. Recent theoretical credit cycles literature suggests that indebtedness, and the resulting liquidity constraints, could explain LDC business cycles. This paper builds a macroeconomic model to trace the LDC income paths. In this model indebtedness and liquidity constraints reduce aggregate investment. We use the World Data (1995) to calibrate for the convergence parameter. It is found that LDC cycles are convergent and non-oscillatory, and indebtedness delays the return to long-term steady state income.

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Endogenous Growth And The Manufacturing Revolution, Hing-Man Leung Mar 2002

Endogenous Growth And The Manufacturing Revolution, Hing-Man Leung

Research Collection School Of Economics

Manufacturing is undergoing a revolution. Teamwork, job-rotation, multitasking are superseding the Taylorist mode of organization. The skilled workforce, armed with automated machines, is gradually substituting and replacing the unskilled. At the same time the U.S. economy is experiencing record breaking growth. Is faster growth a consequence of this manufacturing revolution? We study this by inserting dynamic career choice into endogenous growth by human capital accumulation. The answer is affirmative: The gradual substitution of the unskilled by the skilled boosts the long-term growth trend. The model also explains worsening wage inequality between as well as within the skilled groups.

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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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A Dynamic It Adoption Model For The Soho Market: Pc Generational Decisions With Technological Expectations, Namwoon Kim, Jin K. Han, Rajendra K. Srivastava Feb 2002

A Dynamic It Adoption Model For The Soho Market: Pc Generational Decisions With Technological Expectations, Namwoon Kim, Jin K. Han, Rajendra K. Srivastava

Research Collection Lee Kong Chian School Of Business

The small-office/home-office (SOHO) professionals comprise the fastest growing segment in the labor force today. Typically being a one-person business based at home, SOHO owners mostly rely on office information technology to single handedly run their entire operation. Despite the segment's ostensibly growing dependence and influence on the information technology industry, still very little is known about the dynamics between SOHO and IT products. With the purpose of addressing this void, the SOHO professionals' adoption patterns of multigenerational IT products are ivestigated. Accordingly, an individual SOHO-level initial- and repeat-purchase logit model that captures the procurement patterns for successive generations of technological …

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Smil Vs Mpeg-4 Bifs, Lai-Tee Cheok, Alexandros Eleftheriadis Feb 2002

Smil Vs Mpeg-4 Bifs, Lai-Tee Cheok, Alexandros Eleftheriadis

Research Collection School Of Computing and Information Systems

We present the results of a comparative analysis between the Synchronized Multimedia Integration Language (SMIL) and MPEG-4 BInary Format for Scenes (BIFS). SMIL is a language developed by the W3C consortium for expressing media synchronization among objects of various media types. MPEG-4 BIFS is the scene description scheme of MPEG-4, an international standard for communicating interactive audiovisual scenes. They are both facilities for representing and synchronizing multimedia content, and have a wide range of support for interactivity, animation and object composition features, etc. We compare their scope and purposes, the level of support for the multimedia features and investigate the …

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The American People In Crisis: A Content Analysis, Roderick P. Hart, Sharon E. Jarvis, Elvin T. Lim Feb 2002

The American People In Crisis: A Content Analysis, Roderick P. Hart, Sharon E. Jarvis, Elvin T. Lim

Research Collection School of Social Sciences

This study examines how images of the American electorate were deployed after the11 September 2001 terrorism incident and during the Clinton impeachment. Transcripts of congressional proceedings, news coverage, and presidential campaign addresses were analyzed to determine how the phrase the American people was used during these two crises and in unrelated presidential campaign speeches. The analysis considered the roles, actions, qualities, and circumstances ascribed to the people, as well as the time orientation and the forces aligned against the people. The results show that (1) relative to presidential campaign rhetoric, both crises resulted in greater concentration on the electorate; (2) …

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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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Endogenous Growth And Equilibrium Unemployment In A North-South Model Of The World Economy, Hian Teck Hoon Feb 2002

Endogenous Growth And Equilibrium Unemployment In A North-South Model Of The World Economy, Hian Teck Hoon

Research Collection School Of Economics

A North-South model is developed which incorporates an endogenous rate of equilibrium unemployment in the North in the context of long-run growth. It is shown how increases in the size of public debt and unemployment compensation financed by payroll taxation, all measured relative to productivity, raise the Northern natural rate of unemployment and, consequently, reduce the global rate of long-run growth. The effect of the shocks is also to drive down the rate of employment expansion in the South. A set of the fundamental determinants of the world terms of trade is obtained, which includes policy parameters.

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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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French Military Policies In The Aftermath Of The Yên Bay Mutiny, 1930: Old Security Dilemmas Return To The Surface, Tobias Frederik Rettig Jan 2002

French Military Policies In The Aftermath Of The Yên Bay Mutiny, 1930: Old Security Dilemmas Return To The Surface, Tobias Frederik Rettig

Research Collection School of Social Sciences

This paper provides a brief summary of the Yên Bay mutiny of 10 February 1930, before examining its links to a wider insurrectionary attempt by the Vietnamese Nationalist Party in parts of Tonkin and the reasons why the attempted insurrection was to begin at Yên Bay but not in other garrison towns. It then places the mutiny in a context in which the use of Vietnamese soldiers in French service was necessary in order to maintain French supremacy as a colonial and protectorate power in French Indo-China. But instead of focusing on the mutiny itself and its causes, the main …

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Singapore Management University Report To Stakeholders 2002 - 2003, Singapore Management University Jan 2002

Singapore Management University Report To Stakeholders 2002 - 2003, Singapore Management University

Report to Stakeholders

From a start-up institution with great expectations just three years ago, SMU has grown leaps and bounds. This past year was no exception, as we reached new heights while reaffirming the foundational vision of what we are – and want to be. A university with a rigorous curriculum and the right kind of academic and cultural environment for research, exploration and experimentation – where calculated risks can lead to ultimate success. A university full of dynamically talented students and academically outstanding faculty – interactive players in the process of education who make up SMU’s rich intellectual and personally diverse fabric. …

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Asset Prices, The Real Exchange Rate, And Unemployment In A Small Open Economy: A Medium-Run Structuralist Perspective, Hian Teck Hoon, Edmund S. Phelps Jan 2002

Asset Prices, The Real Exchange Rate, And Unemployment In A Small Open Economy: A Medium-Run Structuralist Perspective, Hian Teck Hoon, Edmund S. Phelps

Research Collection School Of Economics

No abstract provided.

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Estimation Of The Stochastic Volatility Model By The Empirical Characteristic Function Method, J. Knight, S. Satchell, Jun Yu Jan 2002

Estimation Of The Stochastic Volatility Model By The Empirical Characteristic Function Method, J. Knight, S. Satchell, Jun Yu

Research Collection School Of Economics

The stochastic volatility model has no closed form for its likelihood and hence the maximum likelihood estimation method is difficult to implement. However, it can be shown that the model has a known characteristic function. As a consequence, the model is estimable via the empirical characteristic function. In this paper, the characteristic function of the model is derived and the estimation procedure is discussed. An application is considered for daily returns of Australian/New Zealand dollar exchange rate. Model checking suggests that the stochastic volatility model together with the empirical characteristic function estimates fit the data well.

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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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