Open Access. Powered by Scholars. Published by Universities.®

Digital Commons Network™

Open Access. Powered by Scholars. Published by Universities.®

Singapore Management University

Discipline
Keyword
Publication Year
Publication
Publication Type
File Type

Articles 15331 - 15360 of 15983

Full-Text Articles in Entire DC Network

Measuring Information Quality Of Web Site: Development Of Instrument, P. Katerattanakul, Keng Siau Dec 1999

Measuring Information Quality Of Web Site: Development Of Instrument, P. Katerattanakul, Keng Siau

Research Collection School Of Computing and Information Systems

Web sites have been extensively used to provide information to consumers. While practitioners and researchers have proposed different criteria for effective Web site design based on common sense, intuition, and rules-ofthumb, effective Web site design focusing on the quality of the information it provides has rarely been studied. In this research, we propose a framework and develop an instrument to measure the information quality of individual or personal Web sites. The theoretical foundation of this research is the information quality framework. The proposed framework and instrument were tested in an individual or personal Web site context.

Go to article

An Investigation Of Price Discovery In Informationally-Linked Markets: Equity Trading In Malaysia And Singapore, David K. Ding, Frederick H. Harris, Sie Ting Lau, Thomas H. Mclnish Nov 1999

An Investigation Of Price Discovery In Informationally-Linked Markets: Equity Trading In Malaysia And Singapore, David K. Ding, Frederick H. Harris, Sie Ting Lau, Thomas H. Mclnish

Research Collection Lee Kong Chian School Of Business

Using transactions data for the Kuala Lumpur Stock Exchange and the Stock Exchange of Singapore (SES) for a major Malaysian conglomerate, Sime Darby Berhad, and intraday exchange rate data, we investigate whether and to what extent each exchange contributes to price discovery. Results indicate that the price series are cointegrated. The raw data appear to indicate the presence of arbitrage opportunities, but none exist after taking exchange rate changes into account. Using the common long-memory factors of Gonzalo and Granger (1995, Journal of Business and Economic Statistics 13, 1-9), we show that while the majority of the price discovery (approximately …

Go to article

Multivariate Density Forecast Evaluation And Calibration In Financial Risk Management: High-Frequency Returns On Foreign Exchange, Francis X. Diebold, Jinyong Hahn, Anthony S. Tay Nov 1999

Multivariate Density Forecast Evaluation And Calibration In Financial Risk Management: High-Frequency Returns On Foreign Exchange, Francis X. Diebold, Jinyong Hahn, Anthony S. Tay

Research Collection School Of Economics

We provide a framework for evaluating and improving multivariate density forecasts. Among other things, the multivariate framework lets us evaluate the adequacy of density forecasts involving cross-variable interactions, such as time-varying conditional correlations. We also provide conditions under which a technique of density forecast calibration can be used to improve deficient density forecasts, and we show how the calibration method can be used to generate good density forecasts from econometric models, even when the conditional density is unknown. Finally, motivated by recent advances in financial risk management, we provide a detailed application to multivariate high-frequency exchange rate density forecasts. © …

Go to article

Mpeg-4 Systems And Applications, Hari Kalva, Lai-Tee Cheok, Alexandros Eleftheriadis Nov 1999

Mpeg-4 Systems And Applications, Hari Kalva, Lai-Tee Cheok, Alexandros Eleftheriadis

Research Collection School Of Computing and Information Systems

MPEG-4, under the auspices of the ISO, is specifying tools to enable object-based audio-visual presentations [3]. These include tools to encode individual objects, compose presentations with objects, store these object-based presentations and access these presentations in a distributed manner over networks. The main distinguishing feature of object-based audio-visual presentations is the scene composition at the user terminal. The objects that are part of a scene are composed and displayed at the user end as opposed to encoding the composed scenes as is done in the case of MPEG-2. Such object-based representation and presentation has several benefits including compression efficiency and …

Go to article

Marketing, Business Processes, And Shareholder Value: An Organizationally Embedded View Of Marketing Activities And The Discipline Of Marketing, Rajendra Kumar Srivastava, Tasadduq A. Shervani, Liam Fahey Oct 1999

Marketing, Business Processes, And Shareholder Value: An Organizationally Embedded View Of Marketing Activities And The Discipline Of Marketing, Rajendra Kumar Srivastava, Tasadduq A. Shervani, Liam Fahey

Research Collection Lee Kong Chian School Of Business

The authors develop a framework for understanding the integration of marketing with business processes and shareholder value. The framework redefines marketing phenomena as embedded in three core business processes that generate value for customers-product development management, supply chain management, and customer relationship management-which in turn creates shareholder value. Such a conceptualization of marketing has the potential to introduce dramatic shifts in the scope, content, and influence of marketing in the organization. The authors highlight the implications of an organizationally embedded view of marketing for the future of marketing theory and practice.

Go to article

Using Strategic Partnerships To Create A Sustainable Competitive Position For Hi-Tech Start-Up Firms, Arnoud De Meyer Oct 1999

Using Strategic Partnerships To Create A Sustainable Competitive Position For Hi-Tech Start-Up Firms, Arnoud De Meyer

Research Collection Lee Kong Chian School Of Business

In most cases these companies chose or were forced to engage in a technology partnership in order to develop and survive. As one would expect, some of these partnerships succeeded whilst others failed. With hindsight it occurred to the author that success or failure was not necessarily a random event, or idiosyncratic to one particular company, but that there seemed to be a pattern. Some partnerships failed because they were a strategic misfit, others probably because they were badly implemented. Based on these clinical case studies, The author addresses these questions: when and under what conditions a partnership is needed; …

Go to article

Manufacturing Strategy And New Venture Performance: A Comparison Of Independent And Corporate Ventures In The Biotechnology Industry, Shaker A. Zahra, Gerard George Sep 1999

Manufacturing Strategy And New Venture Performance: A Comparison Of Independent And Corporate Ventures In The Biotechnology Industry, Shaker A. Zahra, Gerard George

Research Collection Lee Kong Chian School Of Business

Little empirical research has compared the manufacturing strategies of corporate and independent new ventures. This study explores these differences with data from the young, science-based biotechnology industry, and examines the performance effects of manufacturing strategy variables including scope, competitive thrust, and capabilities. The results show that the corporate and independent biotechnology new ventures pursue significantly different manufacturing strategies, and that different dimensions of manufacturing strategies affect the performance of corporate vs. independent ventures quite differently.

Go to article

Asian Higher Education And The Politics Of Identity, Lily Kong Sep 1999

Asian Higher Education And The Politics Of Identity, Lily Kong

Research Collection School of Social Sciences

No abstract provided.

Go to article

Xcert Software, Inc., Keng Siau Sep 1999

Xcert Software, Inc., Keng Siau

Research Collection School Of Computing and Information Systems

Xcert’s business is in developing Internet and Intranet security enhancement technology. Xcert was founded in April 1996 by Andrew Csinger and Pat Richard and was headquartered in Vancouver, Canada. Xcert’s solution to Internet security was a public key infrastructure (PKI). PKI is a system of digital certi® cates, certi® cate authorities (CAs) and other registration authorities that verify and authenticate the validity of each party involved in an Internet transaction. Xcert’s PKI technology allows organizations of any size to issue digital certi® cates to their members. These organizations become their own CA and are empowered to issue digital certi® cates …

Go to article

Non-Repudiation In An Agent-Based E-Commerce System, Chin Chuan Liew, Wee-Keong Ng, Ee Peng Lim, Beng Suang Tan, Kok-Leong Ong Sep 1999

Non-Repudiation In An Agent-Based E-Commerce System, Chin Chuan Liew, Wee-Keong Ng, Ee Peng Lim, Beng Suang Tan, Kok-Leong Ong

Research Collection School Of Computing and Information Systems

Abecos is an agent-based e-commerce system under development at the Nanyang Technological University. A key factor in making this system usable in practice is strict security controls. One aspect of security is the provision of non-repudiation services. As protocols for non-repudiation have focused on -message non-repudiation, its adaptation to afford non-repudiation in a communication session for two agents in Abecos is inefficient. In this work, we investigate and propose a protocol for enforcing non-repudiation in a session. The protocol is believed to be applicable in any e-commerce system; agent- or not agent-based.

Go to article

Is The Term Premium A Risk Premium?, Louis H. Ederington, Jeremy C. Goh Sep 1999

Is The Term Premium A Risk Premium?, Louis H. Ederington, Jeremy C. Goh

Research Collection Lee Kong Chian School Of Business

This paper explores whether excess holding period returns on long vis-a-vis short-term securities behave in a manner that is consistent with (1) market efficiency, (2) the time-varying-term-premium variant of the expectations hypothesis, and (3) theories of the term premium that view it as a reward for risk bearing. Both traditional and modern theories of the term premium imply that it should evolve fairly slowly over time as attitudes toward risk and/or perceived covariances with wealth or consumption change. This implies that this period's term premium should have some predictive ability for next period's. However, we find that this quarter's ex-post …

Go to article

Motion Tracking Of Human Mouth By Generalized Deformable Models, Syin Chan, Chong-Wah Ngo, Kok F. Lai Sep 1999

Motion Tracking Of Human Mouth By Generalized Deformable Models, Syin Chan, Chong-Wah Ngo, Kok F. Lai

Research Collection School Of Computing and Information Systems

We propose and evaluate four trackers for tracking the shape, motion and deformation of a human mouth in video sequences. The trackers are suitable for use in very low bitrate video coding systems. (C) 1999 Elsevier Science B.V. All rights reserved.

Go to article

Internet, World Wide Web, And Creativity, Keng Siau Sep 1999

Internet, World Wide Web, And Creativity, Keng Siau

Research Collection School Of Computing and Information Systems

The growth of the Internet has been the most astonishing technological and social phenomenon of the last decade of this century. In 1990 only a few academics had heard of it; now, more than 50 million people use it. By the turn of the century, that figure could be 100–200 million. So far, the network's only constant has been that the number of new users has doubled almost every 12–18 months. Most organizations have or will soon have Internet access. The popularity of Internet provides a tremendous opportunity for individuals and organizations to explore its features and services for electronic …

Go to article

Locating Web Information Using Web Checkpoints, Aik Kee Luah, Wee-Keong Ng, Ee Peng Lim, Wee Peng Lee, Yinyan Cao Sep 1999

Locating Web Information Using Web Checkpoints, Aik Kee Luah, Wee-Keong Ng, Ee Peng Lim, Wee Peng Lee, Yinyan Cao

Research Collection School Of Computing and Information Systems

Conventional search engines locate information by letting users establish a single web checkpoint1. By specifying one or more keywords, users direct search engines to return a set of documents that contain those keywords. From the documents (links) returned by search engines, user proceed to further probe the WWW from there. Hence, these initial set of documents (contingent upon the occurrence of keyword(s)) serve as a web checkpoint. Generally, these links are numerous and may not result in much fruitful searches. By establishing multiple web checkpoints, a richer and controllable search procedure can be constructed to obtain more relevant Web information. …

Go to article

Design Approaches To Model-Based Simulation In Intelligent Computer Assisted Instruction, Bjoern Helfesrieder, Venky Shankararaman Sep 1999

Design Approaches To Model-Based Simulation In Intelligent Computer Assisted Instruction, Bjoern Helfesrieder, Venky Shankararaman

Research Collection School Of Computing and Information Systems

Model-based simulation systems have been created in various fields of engineering to train personnel or students in operation, maintenance and troubleshooting of complex devices and systems. A review of literature indicates a lack of good overviews of the approaches to system design of model-based training simulations in Intelligent Computer Assisted Instruction (ICAI). Though single systems have to some extent been evaluated with regard to their performance, an organised evaluation, especially a comparative evaluation of the systems that have been created within the field is lacking. To be able to successfully conduct an in-depth review under these conditions, we concentrate and …

Go to article

Theory And Research In Strategic Management: Swings Of A Pendulum, Robert E. Hoskisson, William P. Wan, Daphne W. Yiu, William A. Hitt Aug 1999

Theory And Research In Strategic Management: Swings Of A Pendulum, Robert E. Hoskisson, William P. Wan, Daphne W. Yiu, William A. Hitt

Research Collection Lee Kong Chian School Of Business

The development of the field of strategic management within the last two decades has been dramatic. While its roots have been in a more applied area, often referred to as business policy, the current field of strategic management is strongly theory based, with substantial empirical research, and is eclectic in nature. This review of the development of the field and its current position examines the field’s early development and the primary theoretical and methodological bases through its history. Early developments include Chandler’s (1962) Strategy and Structure and Ansoff’s (1965) Corporate Strategy. These early works took on a contingency perspective (fit …

Go to article

Private Placement Of Common Equity And Earnings Expectations, Jeremy C. Goh, Michael Gombola, Hai Wei Lee, Feng Ying Liu Aug 1999

Private Placement Of Common Equity And Earnings Expectations, Jeremy C. Goh, Michael Gombola, Hai Wei Lee, Feng Ying Liu

Research Collection Lee Kong Chian School Of Business

Earnings forecast revisions by analysts subsequent to the announcement of private equity placements are examined. Results show that analysts make significant upward revisions to their forecasts for current-year earnings. Furthermore, these forecast revisions are significantly related to announcement-period abnormal returns, but not to the risk changes accompanying the equity placement. These findings are consistent with the information hypothesis, which suggests that private equity placements convey favorable information about future earnings.

Go to article

Selection Of Expatriates For Regional Business Operations In Asia: A Study Of Mne Managers In Singapore, A. Ahad M. Osman-Gani, Wee Liang Tan, Thian Ser Toh Aug 1999

Selection Of Expatriates For Regional Business Operations In Asia: A Study Of Mne Managers In Singapore, A. Ahad M. Osman-Gani, Wee Liang Tan, Thian Ser Toh

Research Collection Lee Kong Chian School Of Business

The recent interest for regionalization of business operations in Asia underscores the demand for expatriates. While much has been written on expatriation, very little was documented on expatriates assigned in Asian countries. In this respect, American, German, Japanese and Korean MNEs have been found to take active interests in regional expansion of business in Asia. Expatriation is a significant international management issue for them. The high costs of expatriation and the risks for expatriate failures also underscore this importance. As such, selecting the right candidate for expatriation success is a crucial issue for these MNEs. This paper presents the findings …

Go to article

Artificial Intelligence Approach To Analyzing The Bullwhip Effect In Supply Chains, C. Qing, Keng Siau Aug 1999

Artificial Intelligence Approach To Analyzing The Bullwhip Effect In Supply Chains, C. Qing, Keng Siau

Research Collection School Of Computing and Information Systems

Supply chain management critically affects businesses’ abilities to obtain and sustain competitive advantages. The bullwhip effect, however, presents a challenge for successful supply chain management by amplifying demands in the supply chains. This paper presents a systematic approach to tackle the issue of bullwhip effect. Firstly, we define the supply chain under a multiagent framework. Secondly, the group problem solving paradigm, which is a rule learning approach, is proposed to enhance the decision making process within the supply chain framework. The group problem solving paradigm is also suggested as a means to alleviate the bullwhip effect. The paper concludes with …

Go to article

Commercial Satellite Imagery Comes Of Age, Ann Florini, Yahya Dehqanzada Aug 1999

Commercial Satellite Imagery Comes Of Age, Ann Florini, Yahya Dehqanzada

Research Collection School of Social Sciences

Since satellites started photographing Earth from space nearly four decades ago, their images have inspired excitement, introspection, and, often, fear. Like all information, satellite imagery is in itself neutral. But satellite imagery is a particularly powerful sort of information, revealing both comprehensive vistas and surprising details. Its benefits can be immense, but so can its costs.

Go to article

Experience As Art, Sor-Hoon Tan Jul 1999

Experience As Art, Sor-Hoon Tan

Research Collection School of Social Sciences

Chinese philosophy views experience as intrinsically aesthetic. This world view could be elucidated through a consideration of John Dewey's aesthetics and features of Chinese art. Dewey's philosophy of art starts with an understanding of experience as 'live processes' of living creatures interacting with their environment. Such processes are autopoietic in being self-sustaining, ever-changing, capable of increasing complexity, capable of generating novelty, direction and progress on its own. Its autopoietic character is a precondition of the aesthetic in the process of experience. An aesthetic experience is rhythmic, focused, consummatory, and reaches beyond the transitory boundaries of concrete existence. The aesthetic is …

Go to article

Views From The Drugs Summit, Mark Findlay Jul 1999

Views From The Drugs Summit, Mark Findlay

Research Collection Yong Pung How School Of Law

The jury is still out on whether the Drugs Summit was a political set piece. The Opposition participants regularly accused the Government of just that. Without doubt, however, it was the reaction of the Opposition which was orchestrated and pre-conceived.

Go to article

A Simultaneous Model For Innovative Product Category Sales Diffusion And Competitive Dynamics, Namwoon Kim, Ellen Bridges, Rajendra Kumar Srivastava Jun 1999

A Simultaneous Model For Innovative Product Category Sales Diffusion And Competitive Dynamics, Namwoon Kim, Ellen Bridges, Rajendra Kumar Srivastava

Research Collection Lee Kong Chian School Of Business

Diffusion of innovation has been the focus of an entire stream of research in marketing, and firm entry and exit decisions have been investigated by marketers, strategists, and economists. However, little attention has been paid to the relationship between changing demand and the entry and exit behaviors of competitors in the marketplace. Understanding this relationship is essential in making resource commitments, as profitability of options depends not only on the size and growth of the market, but also on the number of competitors likely to be encountered. This is particularly important in innovative markets, where changes occur rapidly and one …

Go to article

Globalisation And Singaporean Transmigration: Re-Imagining And Negotiating National Identity, Lily Kong Jun 1999

Globalisation And Singaporean Transmigration: Re-Imagining And Negotiating National Identity, Lily Kong

Research Collection School of Social Sciences

Within the context of globalisation that confronts the world today, I aim in this paper to illustrate one particular state's attempts at constructing a 'nation' amidst efforts to encourage its citizens to globalise, actions which are ostensibly, or at least, potentially, contradictory; and to analyse how these citizens who became transmigrants construct and negotiate their sense of 'nation' and national identity. Specifically, my empirical questions centre on Singaporean transmigrants working in China. I ask the following questions. What happens to the sense of national identity among Singaporeans and their relationship with the 'nation' when confronted with transnational conditions? What are …

Go to article

Estimating A Transformation And Its Effect On Box-Cox T-Ratio, Zhenlin Yang Jun 1999

Estimating A Transformation And Its Effect On Box-Cox T-Ratio, Zhenlin Yang

Research Collection School Of Economics

This article concerns i) the stochastic behavior of the Box-Cox transformation estimator and ii) the effect of estimating a transformation on the Box-CoxT-ratio used for the post-transformation analysis. It is shown that the transformation estimator depends on three factors: the model structure, the mean-spread and the error standard deviation σ0. In general, a structured model is able to estimate the transformation very well; an unstructured model can do well also unless the mean-spread and σ0 are both small; and a one-mean mode can give a poor-estimate if σ0 is small. When the sample is not large, it is shown that …

Go to article

Contextual Effects On The Revision Of Evaluative Judgements: An Extension Of The Omission Detection Framework, A. V. Muthukrishnan, Seshan Ramaswami Jun 1999

Contextual Effects On The Revision Of Evaluative Judgements: An Extension Of The Omission Detection Framework, A. V. Muthukrishnan, Seshan Ramaswami

Research Collection Lee Kong Chian School Of Business

When consumers are presented with negative information about a brand that they have evaluated positively earlier, the extent to which they change their initial evaluation may depend on the formats in which information is presented (non-comparative vs. comparative) at the two stages. In four experiments, we manipulate the format in which information is presented at an initial and at a challenge stage and investigate their effects on the degree of revision in evaluative judgments. The results of the four experiments suggest that when consumers receive initial information in a noncomparative format, a comparative challenge causes a greater degree of revision …

Go to article

Running On The Spot? A Review Of Twenty Years Of Research On The Management Of Human Resources In Comparative And International Perspective, Timothy Adrian Robert Clark, Howard Gospel, John Montgomery Jun 1999

Running On The Spot? A Review Of Twenty Years Of Research On The Management Of Human Resources In Comparative And International Perspective, Timothy Adrian Robert Clark, Howard Gospel, John Montgomery

Research Collection Lee Kong Chian School Of Business

Research using a comparative and international perspective on the management of human resources is examined, drawing on articles published in leading human resource management, management/ organizational behaviour and related social science journals between 1977 and 1997. In total a little under 2 per cent of the articles under review focused on the management of human resources in a comparative and international perspective. The largest group of these articles was comparative in nature (44 per cent), followed by those with an international perspective (35 per cent). A smaller number adopted a combined approach (17 per cent) and a few were separately …

Go to article

Detection Of Gradual Transitions Through Temporal Slice Analysis, Chong-Wah Ngo, T. C. Pong, R. T. Chin Jun 1999

Detection Of Gradual Transitions Through Temporal Slice Analysis, Chong-Wah Ngo, T. C. Pong, R. T. Chin

Research Collection School Of Computing and Information Systems

In this paper, we present approaches for detecting camera cuts, wipes and dissolves based on the analysis of spatio-temporal slices obtained from videos. These slices are composed of spatial ly and temporal ly coherent regions which can be perceived as shots. In the proposed methods, camera breaks are located by performing color-texture segmentation and statistical analysis on these video slices. In addition to detecting camera breaks, our methods can classify the detected breaks as camera cuts, wipes and dissolves in an efficient manner

Go to article

Camera Break Detection By Partitioning Of 2d Spatio-Temporal Images In Mpeg Domain, Chong-Wah Ngo Jun 1999

Camera Break Detection By Partitioning Of 2d Spatio-Temporal Images In Mpeg Domain, Chong-Wah Ngo

Research Collection School Of Computing and Information Systems

In this paper, we propose a new approach to detect camera cuts and wipes. The approach projects a video into two images representing the spatio-temporal continuity of a video life. Visually, these images are composed by regions of different patterns, each region represents the temporal location of a shot. The shape of a region boundary inherently classifies cut and wipe, and most importantly, marks the start and end of a wipe sequence. We hence formulate algorithms to locate the color and texture discontinuities occurring at the boundaries of image regions.

Go to article

The Effectiveness Of Expert Support Technology For Decision Making: Individuals Versus Small Groups, Fiona Fui-Hoon Nah, Jiye Mao, Izak Benbasat Jun 1999

The Effectiveness Of Expert Support Technology For Decision Making: Individuals Versus Small Groups, Fiona Fui-Hoon Nah, Jiye Mao, Izak Benbasat

Research Collection School Of Computing and Information Systems

Expert support systems (ESSs) are increasingly used in organizations to support individuals and groups in decision making. Although ESSs have been shown to enhance the decision-making capabilities of individuals, their benefits in supporting group decision making are less clear. To the best of our knowledge, no empirical research has evaluated the effectiveness of the technology in the group setting or compared its usefulness for supporting individual versus group decision making. The results of this research show that ESSs benefit decision making of both individuals and groups and novices are able to gain more from ESSs than experts. The findings also …

Go to article

First Prev Next Last