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2006

Singapore Management University

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How And Why Chinese Firms Excel In 'The Art Of Price War', Knowledge@Smu Dec 2006

How And Why Chinese Firms Excel In 'The Art Of Price War', Knowledge@Smu

Knowledge@SMU

When it comes to price wars, Wharton marketing professor Z. John Zhang can't help but notice that companies in the West and companies in China are quite literally worlds apart. In the West, Zhang says, the outbreak of a price war is viewed as the failure of managerial rationality. In China, the outbreak of a price war is considered a legitimate and effective business strategy. In a recent paper, Zhang and Dongsheng Zhou, a marketing professor at the China Europe International Business School in Shanghai, analyze two price wars that took place in China in the mid-1990s.


What's Ahead For 2007? Knowledge@Wharton Network Surveys The Globe, Knowledge@Smu Dec 2006

What's Ahead For 2007? Knowledge@Wharton Network Surveys The Globe, Knowledge@Smu

Knowledge@SMU

On the financial front, 2006 has been a pretty good year all around. Stock markets in many countries have rallied, energy prices have fallen, inflation is relatively low and growth in GDP ranges from respectable to robust. But the economies of most countries also face a number of threats -- some predictable, some not -- that could derail recent gains in our increasingly connected global markets. What's ahead for 2007 in the U.S., India, Europe, Latin America, China and other parts of the world? We offer a roundup of reports from the Knowledge@Wharton Network, including India Knowledge@Wharton, Universia ...


The Association Between Earnings Quality And Regulatory Report Opinions In The Accounting Industry, Tracey Chunqi Zhang, Katherine Gunny Dec 2006

The Association Between Earnings Quality And Regulatory Report Opinions In The Accounting Industry, Tracey Chunqi Zhang, Katherine Gunny

Research Collection School Of Accountancy

We compare the outcome of two different information systems – self regulation versus private sector regulation – in the accounting industry. Under the Sarbanes-Oxley Act, Public Company Accounting Oversight Board (PCAOB) inspections replaced American Institute of Certified Public Accountants (AICPA) peer reviews of auditors. Peer review opinions are useful with respect to decisions about hiring and firing of auditors (Hilary and Lennox, 2005); therefore, the question remains what are the benefits of incurring the cost to replace a selfregulatory system with a private regulatory agency. We examine the usefulness of these two information systems at distinguishing earnings quality at firms audited by ...


The Effect Of The Options Backdating Scandal On The Stock-Price Performance Of 110 Accused Companies, Gennaro Bernile, Gregg A. Jarrell, Howard Mulcahey Dec 2006

The Effect Of The Options Backdating Scandal On The Stock-Price Performance Of 110 Accused Companies, Gennaro Bernile, Gregg A. Jarrell, Howard Mulcahey

Research Collection Lee Kong Chian School Of Business

Since academic scholars and the Wall Street Journal reported widespread evidence indicating that option grants to executives were backdated, an avalanche of news stories followed documenting this ever-widening corporate scandal. In this study we ask: "How do disclosures of backdating affect shareholder value?" We closely examine 110 companies listed in the Wall Street Journal's Perfect Payday webpage, collecting all news stories related to options backdating. We find that shareholders of these 110 companies suffer on average significant stock-price declines, ranging between 20% and 50%. Moreover, these losses do not seem to be due to temporary overreactions (at least so ...


Dynamic Multi-Linked Negotiations In Multi-Echelon Production Scheduling Networks, Hoong Chuin Lau, G. L. Soh, W. C. Wan Dec 2006

Dynamic Multi-Linked Negotiations In Multi-Echelon Production Scheduling Networks, Hoong Chuin Lau, G. L. Soh, W. C. Wan

Research Collection School Of Information Systems

In this paper, we are concerned with scheduling resources in a multi-tier production/logistics system for multi-indenture goods. Unlike classical production scheduling problems, the problem we study is concerned with local utilities which are private. We present an agent model and investigate an efficient scheme for handling multi-linked agent negotiations. With this scheme we attempt to overcome the drawbacks of sequential negotiations and negotiation parameter settings. Our approach is based on embedding a credit-based negotiation protocol within a local search scheduling algorithm. We demonstrate the computational efficiency and effectiveness of the approach in solving a real-life dynamic production scheduling problem ...


Query-Based Watermarking For Xml Data, Xuan Zhou, Hwee Hwa Pang, Kian-Lee Tan Dec 2006

Query-Based Watermarking For Xml Data, Xuan Zhou, Hwee Hwa Pang, Kian-Lee Tan

Research Collection School Of Information Systems

As increasing amount of XML data is exchanged over the internet, copyright protection of this type of data is becoming an important requirement for many applications. In this paper, we introduce a rights protection scheme for XML data based on digital watermarking. One of the main challenges for watermarking XML data is that the data could be easily reorganized by an adversary in an attempt to destroy any embedded watermark. To overcome it, we propose a query-based watermarking scheme, which creates queries to identify available watermarking capacity, such that watermarks could be recovered from reorganized data through query rewriting. The ...


Love, Work, And Changes In Extraversion And Neuroticism Over Time, Christie N. Scollon, Ed Diener Dec 2006

Love, Work, And Changes In Extraversion And Neuroticism Over Time, Christie N. Scollon, Ed Diener

Research Collection School of Social Sciences

The present study examined individual differences in change in extraversion, neuroticism, and work and relationship satisfaction. Of particular interest were the correlations between changes. Data were from the Victorian Quality of Life Panel Study (B. Headey & A. Wearing, 1989, 1992), in which an overall 1,130 individuals participated (ages 16 to 70). Respondents were assessed every 2 years from 1981 to 1989. Four major findings emerged. (a) There were significant individual differences in changes in extraversion and neuroticism. (b) change was not limited to young adulthood. (c) Development was systematic in that increased work and relationship satisfaction was associated with decreases in neuroticism and increases in extraversion over time; on average, the magnitude of the relation between changes in work and relationship satisfaction and traits was .40. (d) Cross-lagged models indicated traits had a greater influence on role satisfaction; however, marginal support emerged for work satisfaction leading to increased extraversion. Implications of correlated change are discussed.


Designing Web Sites For Customer Loyalty Across Business Domains: A Multilevel Analysis, S. Mithas, Narayanasamy Ramasubbu, M. S. Krishnan, C. Fornell Dec 2006

Designing Web Sites For Customer Loyalty Across Business Domains: A Multilevel Analysis, S. Mithas, Narayanasamy Ramasubbu, M. S. Krishnan, C. Fornell

Research Collection School Of Information Systems

Web Sites are important components of Internet strategy for organizations. This paper develops a theoretical model for understanding the effect of Web site design elements on customer loyalty to a Web site. We show the relevance of the business domain of a Web site to gain a contextual understanding of relative importance of Web site design elements. We use a hierarchical linear modeling approach to model multilevel and cross-level interactions that have not been explicitly considered in previous research. By analyzing, data on more than 12,000 online customer surveys for 43 Web sites in several business domains, we find ...


Reiterated Commemoration: Hiroshima As National Trauma, Hiro Saito Dec 2006

Reiterated Commemoration: Hiroshima As National Trauma, Hiro Saito

Research Collection School of Social Sciences

This article examines historical transformations of Japanese collective memory of the atomic bombing of Hiroshima by utilizing a theoretical framework that combines a model of reiterated problem solving and a theory of cultural trauma. I illustrate how the event of the nuclear fallout in March 1954 allowed actors to consolidate previously fragmented commemorative practices into a master frame to define the postwar Japanese identity in terms of transnational commemoration of "Hiroshima." I also show that nationalization of trauma of "Hiroshima" involved a shift from pity to sympathy in structures of feeling about the event. This historical study suggests that a ...


Finding A Length-Constrained Maximum-Sum Or Maximum-Density Subtree And Its Application To Logistics, Hoong Chuin Lau, Trung Hieu Ngo, Bao Nguyen Nguyen Dec 2006

Finding A Length-Constrained Maximum-Sum Or Maximum-Density Subtree And Its Application To Logistics, Hoong Chuin Lau, Trung Hieu Ngo, Bao Nguyen Nguyen

Research Collection School Of Information Systems

We study the problem of finding a length-constrained maximum-density path in a tree with weight and length on each edge. This problem was proposed in [R.R. Lin, W.H. Kuo, K.M. Chao, Finding a length-constrained maximum-density path in a tree, Journal of Combinatorial Optimization 9 (2005) 147–156] and solved in O(nU) time when the edge lengths are positive integers, where n is the number of nodes in the tree and U is the length upper bound of the path. We present an algorithm that runs in O(nlog2n) time for the generalized case when the edge ...


Continuous Monitoring Of Knn Queries In Wireless Sensor Networks, Yuxia Yao, Xueyan Tang, Ee Peng Lim Dec 2006

Continuous Monitoring Of Knn Queries In Wireless Sensor Networks, Yuxia Yao, Xueyan Tang, Ee Peng Lim

Research Collection School Of Information Systems

Wireless sensor networks have been widely used for civilian and military applications, such as environmental monitoring and vehicle tracking. In these applications, continuous query processing is often required and their efficient evaluation is a critical requirement to be met. Due to the limited power supply for sensor nodes, energy efficiency is a major performance measure in such query evaluation. In this paper, we focus on continuous kNN query processing. We observe that the centralized data storage and monitoring schemes do not favor energy efficiency. We therefore propose a localized scheme to monitor long running nearest neighbor queries in sensor networks ...


Cosign: A Parallel Algorithm For Coordinated Traffic Signal Control, Shih-Fen Cheng, Marina A. Epelman, Robert L. Smith Dec 2006

Cosign: A Parallel Algorithm For Coordinated Traffic Signal Control, Shih-Fen Cheng, Marina A. Epelman, Robert L. Smith

Research Collection School Of Information Systems

The problem of finding optimal coordinated signal timing plans for a large number of traffic signals is a challenging problem because of the exponential growth in the number of joint timing plans that need to be explored as the network size grows. In this paper, the game-theoretic paradigm of fictitious play to iteratively search for a coordinated signal timing plan is employed, which improves a system-wide performance criterion for a traffic network. The algorithm is robustly scalable to realistic-size networks modeled with high-fidelity simulations. Results of a case study for the city of Troy, MI, where there are 75 signalized ...


Towards Effective Content-Based Music Retrieval With Multiple Acoustic Feature Composition, Jialie Shen, John Shepherd, Ngu Ahh Dec 2006

Towards Effective Content-Based Music Retrieval With Multiple Acoustic Feature Composition, Jialie Shen, John Shepherd, Ngu Ahh

Research Collection School Of Information Systems

In this paper, we present a new approach to constructing music descriptors to support efficient content-based music retrieval and classification. The system applies multiple musical properties combined with a hybrid architecture based on principal component analysis (PCA) and a multilayer perceptron neural network. This architecture enables straightforward incorporation of multiple musical feature vectors, based on properties such as timbral texture, pitch, and rhythm structure, into a single low-dimensioned vector that is more effective for classification than the larger individual feature vectors. The use of supervised training enables incorporation of human musical perception that further enhances the classification process. We compare ...


Towards Effective Content-Based Music Retrieval With Multiple Acoustic Feature Combination, Jialie Shen, John Shepherd, Ann H. H. Ngu Dec 2006

Towards Effective Content-Based Music Retrieval With Multiple Acoustic Feature Combination, Jialie Shen, John Shepherd, Ann H. H. Ngu

Research Collection School Of Information Systems

In this paper, we present a new approach to constructing music descriptors to support efficient content-based music retrieval and classification. The system applies multiple musical properties combined with a hybrid architecture based on principal component analysis (PCA) and a multilayer perceptron neural network. This architecture enables straightforward incorporation of multiple musical feature vectors, based on properties such as timbral texture, pitch, and rhythm structure, into a single low-dimensioned vector that is more effective for classification than the larger individual feature vectors. The use of supervised training enables incorporation of human musical perception that further enhances the classification process. We compare ...


On The Lower Bound Of Local Optimums In K-Means Algorithms, Zhenjie Zhang, Bing Tian Dai, Anthony K.H. Tung Dec 2006

On The Lower Bound Of Local Optimums In K-Means Algorithms, Zhenjie Zhang, Bing Tian Dai, Anthony K.H. Tung

Research Collection School Of Information Systems

No abstract provided.


Rapid Identification Of Column Heterogeneity, Bing Tian Dai, Nick Koudas, Beng Chin Ooi, Divesh Srivastava, Suresh Venkatasubramanian Dec 2006

Rapid Identification Of Column Heterogeneity, Bing Tian Dai, Nick Koudas, Beng Chin Ooi, Divesh Srivastava, Suresh Venkatasubramanian

Research Collection School Of Information Systems

No abstract provided.


Multivariate Stochastic Volatility, Manabu Asai, Michael Mcaleer, Jun Yu Dec 2006

Multivariate Stochastic Volatility, Manabu Asai, Michael Mcaleer, Jun Yu

Research Collection School Of Economics

The literature on multivariate stochastic volatility (MSV) models has developed significantly over the last few years. This paper reviews the substantial literature on specification, estimation and evaluation of MSV models. A wide range of MSV models is presented according to various categories, namely (i) asymmetric models; (ii) factor models; (iii) time-varying correlation models; and (iv) alternative MSV specifications, including models based on the matrix exponential transformation, Cholesky decomposition, Wishart autoregressive process, and the empirical range. Alternative methods of estimation, including quasi-maximum likelihood, simulated maximum likelihood, Monte Carlo likelihood, and Markov chain Monte Carlo methods, are discussed and compared. Various methods ...


A Two-Stage Realized Volatility Approach To Estimation Of Diffusion Processes With Discrete Data, Peter C. B. Phillips, Jun Yu Dec 2006

A Two-Stage Realized Volatility Approach To Estimation Of Diffusion Processes With Discrete Data, Peter C. B. Phillips, Jun Yu

Research Collection School Of Economics

This paper motivates and introduces a two-stage method of estimating di¤u- sion processes based on discretely sampled observations. In the …rst stage we make use of the feasible central limit theory for realized volatility, as developed in Jacod (1994) and Barndor¤-Nielsen and Shephard (2002), to provide a regression model for estimating the parameters in the di¤usion function. In the second stage the in-…ll likelihood function is derived by means of the Girsanov theorem and then used to estimate the parameters in the drift function. Consistency and asymptotic distribution theory for these estimates are established in various ...


Household Heterogeneity And Optimal Inter-Temporal Pricing For A Durable-Good Monopoly, Winston T. H. Koh Dec 2006

Household Heterogeneity And Optimal Inter-Temporal Pricing For A Durable-Good Monopoly, Winston T. H. Koh

Research Collection School Of Economics

In this paper, I extend the analysis in Koh (2006) to examine the optimality of inter-temporal price discrimination for a durable-good monopoly in a model where infinitely-lived households consume both durable goods and a stream of non-durable goods subject to different inter-temporal budget constraints. I also consider the multi-dimensional setting where households differ in both inter-temporal budget constraints and the utilities they derive from the consumption of the durable good.


Creativity Needed In Non-Profits?, Wee Liang Tan Dec 2006

Creativity Needed In Non-Profits?, Wee Liang Tan

Research Collection Lee Kong Chian School Of Business

Creativity is something that one might not associate with the social service sector. In fact, one might consider creativity something quite distant from the non-profit sector. "We in the social service sector have more important things to do - we serve our clients and beneficiaries; we don't have the time to fool around with fancy new ideas or projects." Yet such sentiments could be no further from the truth.


Singapore's Regionalization Blueprint: A Case For Transnational State Enterprise Networks?, Caroline Yeoh, Victor Sim, Louisa Zhang Dec 2006

Singapore's Regionalization Blueprint: A Case For Transnational State Enterprise Networks?, Caroline Yeoh, Victor Sim, Louisa Zhang

Research Collection Lee Kong Chian School Of Business

No abstract provided.


Economics Of Competition': A Study Of Low-Cost Manufacturing Enclaves In Batam Island, Indonesia, Caroline Yeoh, Feng Hao Chua, Sylvie Tan Dec 2006

Economics Of Competition': A Study Of Low-Cost Manufacturing Enclaves In Batam Island, Indonesia, Caroline Yeoh, Feng Hao Chua, Sylvie Tan

Research Collection Lee Kong Chian School Of Business

Singapore’s transborder industrialization projects in China and India have received much attention. This regionalization initiative was intended to set in place a strategic configuration for the city-state to restructure its domestic industries and, pari passu, retain important linkages with contiguous, low-cost environments. Our study reports on Singapore’s pioneering, albeit lesser-known, project - Batamindo Industrial Park – in neighboring Batam Island, Indonesia, and finds that the strategic intent of this policy gambit remains stymied by non-economic, socio-political complexities in the host environment, and the economics of competition from other industrial estates in the vicinity of this prototype, remains to be addressed.


The Singapore 'Advantage' In Suzhou, China: Premium Or Perception?, Caroline Yeoh, Di Kun Goh, Victor Sim, Norhanna Yumi Dec 2006

The Singapore 'Advantage' In Suzhou, China: Premium Or Perception?, Caroline Yeoh, Di Kun Goh, Victor Sim, Norhanna Yumi

Research Collection Lee Kong Chian School Of Business

This paper revisits Singapore’s industrial development in Suzhou, China, which has been in operation for more than a decade. We aim to glean insights from this experiment and more importantly, to verify recent claims of it generating political gain and economic capital for Singapore. The flagship project took on an identical framework as the other Singaporean transborder industrialization ventures in the region by adopting Singapore’s expertise and reputation for an efficient and stable government and investment environment. These measures were coupled with the combination of local-specific advantages in the region, such as availability of cheaper labour and market ...


Certainty As A Moderator Of Feedback Reactions? A Test Of The Strength Of The Self-Verification Motive, Frederik Anseel, Filip Lievens Dec 2006

Certainty As A Moderator Of Feedback Reactions? A Test Of The Strength Of The Self-Verification Motive, Frederik Anseel, Filip Lievens

Research Collection Lee Kong Chian School Of Business

The present study investigated whether employees are merely interested in hearing good news about themselves, as predicted by self-enhancement theory, or are more interested in feedback that confirms their self-concept, as predicted by self-verification theory. We examined in a field study whether self-view certainty serves as a moderator and strengthens the effect of congruence between individuals' self-views and the performance feedback they receive about these self-views on feedback reactions. Polynomial regression results revealed that people mainly reacted favourably to positive feedback. Prior self-views did not play a key role in explaining feedback reactions. As feedback scores were the main determinant ...


Nation Equity: Incidental Emotions In Country-Of-Origin Effects, Durairaj Maheswaran, Cathy Yi Chen Dec 2006

Nation Equity: Incidental Emotions In Country-Of-Origin Effects, Durairaj Maheswaran, Cathy Yi Chen

Research Collection Lee Kong Chian School Of Business

Different from past research on country-of-origin effects that has focused on cognitive factors, this article examines the impact of incidental emotions and cognitive appraisals associated with these emotions on country-of-origin effects. Experiment 1 compared anger and sadness and demonstrated that country of origin influenced evaluations only in the angry (vs. sad) condition where human (vs. situation) control was high. Experiment 2 further identified the effects of agency control using a different emotion, frustration. Based on these observations, this article suggests that, like brands, countries also have equity associated with them, termed nation equity, that has both performance and emotional components ...


Escalation And De-Escalation Of Commitment To Information Systems Projects: Insights From An Approach-Avoidance Process Model, Gary Pan, Shan Ling Pan Dec 2006

Escalation And De-Escalation Of Commitment To Information Systems Projects: Insights From An Approach-Avoidance Process Model, Gary Pan, Shan Ling Pan

Research Collection School Of Accountancy

We view escalation and de-escalation of commitment as processes involving recurring instances of approach-avoidance conflict. This paper outlines an approach-avoidance process model for describing and analyzing escalation and de-escalation of commitment in information systems projects. In the model, the sequential mapping of project events is integrated with a model of approach-avoidance conflict that identifies periods of gradual evolution at two separate levels of social analysis (project and work) that are punctuated by sudden, revolutionary periods of rapid change. By conceiving the processes of commitment escalation and de-escalation as sequences of events involving approach-avoidance conflicts, researchers may develop a deeper understanding ...


Implication Of Comprehensive Income Disclosure For Future Earnings And Analysts' Forecasts, Jong-Hag Choi, Yoonseok Zang Dec 2006

Implication Of Comprehensive Income Disclosure For Future Earnings And Analysts' Forecasts, Jong-Hag Choi, Yoonseok Zang

Research Collection School Of Accountancy

No abstract provided.


Measuring Qualities Of Articles Contributed By Online Communities, Ee Peng Lim, Ba-Quy Vuong, Hady W. Lauw, Aixin Sun Dec 2006

Measuring Qualities Of Articles Contributed By Online Communities, Ee Peng Lim, Ba-Quy Vuong, Hady W. Lauw, Aixin Sun

Research Collection School Of Information Systems

Using open source Web editing software (e.g., wiki), online community users can now easily edit, review and publish articles collaboratively. While much useful knowledge can be derived from these articles, content users and critics are often concerned about their qualities. In this paper, we develop two models, namely basic model and peer review model, for measuring the qualities of these articles and the authorities of their contributors. We represent collaboratively edited articles and their contributors in a bipartite graph. While the basic model measures an article's quality using both the authorities of contributors and the amount of contribution ...


Reputation Stretching In Online Auctions, Jianqing Chen, Mei Lin, Andrew B. Whinston Dec 2006

Reputation Stretching In Online Auctions, Jianqing Chen, Mei Lin, Andrew B. Whinston

Research Collection School Of Information Systems

Reputation systems are ubiquitously employed in the online marketplaces to provide information on users’ abilities and trustworthiness. We focus particularly on the problem of reputation stretching, the extension of an established reputation into a new market. By examining various factors—market size, the expected performance in the expanding market, and the risk of performance in the expanding market—we characterize conditions that affect bidder’s stretching decision in the expanding market. Moreover, we analyze both the short-term and the long-term expanding cases, and obtain contrasting results in the two settings.


Supply Chain Information Sharing In A Macro Prediction Market, Zhiling Guo, Fang Fang, Andrew B. Whinston Dec 2006

Supply Chain Information Sharing In A Macro Prediction Market, Zhiling Guo, Fang Fang, Andrew B. Whinston

Research Collection School Of Information Systems

This paper aims to address supply chain partners' incentives for information sharing from an information systems design perspective. Specifically, we consider a supply chain characterized by N geographically distributed retailers who order a homogeneous product from one manufacturer. Each retailer's demand risk consists of two parts: a systematic risk part that affects all retailers and an idiosyncratic risk part that only has a local effect. We propose a macro prediction market to effectively elicit and aggregate useful information about systematic demand risk. We show that such information can be used to achieve accurate demand forecast sharing and better channel ...