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Mapping The Multi-Tiered Impacts Of The Growth Of It Industries In India: A Combined Scale-And-Scope Externalities Perspective, Robert J. Kauffman, Ajay Kumar Jul 2008

Mapping The Multi-Tiered Impacts Of The Growth Of It Industries In India: A Combined Scale-And-Scope Externalities Perspective, Robert J. Kauffman, Ajay Kumar

Research Collection School Of Computing and Information Systems

Externalities occur among agglomerated firms. Scale externalities occur between firms in the same industry. Scope externalities occur when heterogeneous industries are collocated. Combined scale-and-scope externalities exist when the scale of one industry is beneficial to the growth of another collocated industry. In the Sein and Haridranath (2004) framework of information technology (IT) impacts on development, scale externalities correspond to second-order impacts, while combined scale and scope eternalities correspond to third-order impacts. We use an agglomeration perspective to explain the growth of IT industries in India. We study growth patterns of four specific IT industries: computer and peripheral equipment manufacturing, semiconductor …

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Timed Automata Patterns, Jin Song Dong, Ping Hao, Shengchao Qin, Jun Sun, Wang Yi Jun 2008

Timed Automata Patterns, Jin Song Dong, Ping Hao, Shengchao Qin, Jun Sun, Wang Yi

Research Collection School Of Computing and Information Systems

Timed Automata have proven to be useful for specification and verification of real-time systems. System design using Timed Automata relies on explicit manipulation of clock variables. A number of automated analyzers for Timed Automata have been developed. However, Timed Automata lack composable patterns for high-level system design. Specification languages like Timed Communicating Sequential Process (CSP) and Timed Communicating Object-Z (TCOZ) are well suited for presenting compositional models of complex real-time systems. In this work, we define a set of composable Timed Automata patterns based on hierarchical constructs in time-enriched process algebras. The patterns facilitate the hierarchical design of complex systems …

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Can Monetary Policy Help To Stabilise Asset Prices?, Knowledge@Smu Jun 2008

Can Monetary Policy Help To Stabilise Asset Prices?, Knowledge@Smu

Knowledge@SMU

Should central banks use monetary policy to stabilise asset prices, particularly home and equity prices? Stefan Gerlach, professor of monetary economics, Johann Wolfgang Goethe University of Frankfurt, points out that no central bank has had lowering home prices as one of its policy goals. Gerlach spoke recently at an Economics and Statistics Seminar at the Singapore Management University on how residential property and equity prices, inflation and economic activity responded to monetary policy shocks in 17 countries from 1986 to 2006.

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Singapore Company Promises Dialysis Treatment Breakthrough, Knowledge@Smu Jun 2008

Singapore Company Promises Dialysis Treatment Breakthrough, Knowledge@Smu

Knowledge@SMU

If all goes well, two years from now kidney patients will get a new lease of life when a portable, artificial kidney is launched by a Singapore-based company. AWAK Technologies was formed in 2007 to commercialise a technology that allows people suffering from kidney failure to lead a life that is close to normal. AWAK CEO Neo Kok Beng spoke recently on “Disrupting the Kidney Dialysis Market: Revolutionary Technologies & Business Models” at a CEO Talks forum organised by the Wee Kim Wee Centre, Singapore Management University.

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“Keeping God In Place”: How Religion Is Managed In Singapore, Knowledge@Smu Jun 2008

“Keeping God In Place”: How Religion Is Managed In Singapore, Knowledge@Smu

Knowledge@SMU

Since independence from Malaysia in 1965, Singapore has enjoyed a high degree of racial and religious harmony carefully nurtured by the government. However, Singaporeans risk being lulled into a false sense of complacency about the state of inter-ethnic relations, cautions Eugene Tan, law professor at the Singapore Management University, in his research paper, “Keeping God in Place: The Management of Religion in Singapore”.

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Enhancing Information And Data Security: A Never Ending Quest, Knowledge@Smu Jun 2008

Enhancing Information And Data Security: A Never Ending Quest, Knowledge@Smu

Knowledge@SMU

Since January 2005, according to the Piracy Rights Clearinghouse, in the US alone there have been data security breaches involving over 218 million records containing sensitive personal information. People whose personal records are compromised are at risk for identity theft and financial fraud. Singapore Management University’s School of Information Systems (SIS) is spearheading research on state-of-the-art technologies and solutions to secure IT infrastructure, protect confidential information for businesses and individuals, and build trust among all parties.

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Myanmar At Sixty: On The Brink Of An Apocalypse Or Reconciliation?, Knowledge@Smu Jun 2008

Myanmar At Sixty: On The Brink Of An Apocalypse Or Reconciliation?, Knowledge@Smu

Knowledge@SMU

The run-up to Myanmar's 60th birthday on 04 January 2008 was not a joyous occasion. Neither was the aftermath. First there was the military regime's crackdown on the 'saffron revolution' in September last year. Then last month Cyclone Nargis struck, leaving millions suffering without shelter and food. What do the next sixty years hold for Myanmar? Tobias Rettig, political science professor at the Singapore Management University, sees a largely bleak future tinged with a faint glimmer of hope.

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Does Watching Television Really Affect Cognitive Development In Young Children?, Knowledge@Smu Jun 2008

Does Watching Television Really Affect Cognitive Development In Young Children?, Knowledge@Smu

Knowledge@SMU

Is a preschool child who spends many hours in front of the television deprived of enriching experiences and healthy activities that facilitate brain development? Joint research by economics professors Huang Fali of Singapore Management University and Lee Myoung-jae of Korea University investigated the effects of watching television on the cognitive development of children by analysing math and reading scores of children aged 8-9 years, and how these related to their television-watching patterns at 6-7 years of age. Their research yielded some surprises.

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From The Head And The Heart: Locating Cognition- And Affect-Based Trust In Managers' Professional Networks, Roy Y. J. Chua, Paul Ingram, Michael W. Morris Jun 2008

From The Head And The Heart: Locating Cognition- And Affect-Based Trust In Managers' Professional Networks, Roy Y. J. Chua, Paul Ingram, Michael W. Morris

Research Collection Lee Kong Chian School Of Business

This article investigates the configuration of cognition- and affect-based trust in managers' professional networks, examining how these two types of trust are associated with relational content and structure. Results indicate that cognition-based trust is positively associated with economic resource, task advice, and career guidance ties, whereas affect-based trust is positively associated with friendship and career guidance ties but negatively associated with economic resource ties. The extent of embeddedness in a network through positive ties increases affect-based trust, whereas that through negative ties decreases cognition-based trust. These findings illuminate how trust arises in networks and inform network research that invokes trust …

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Behavioral Explanations Of Trading Volume And Short-Horizon Price Patterns: An Investigation Of Seven Asia-Pacific Markets, David K. Ding, Thomas H. Mclnish, Udomsak Wongchoti Jun 2008

Behavioral Explanations Of Trading Volume And Short-Horizon Price Patterns: An Investigation Of Seven Asia-Pacific Markets, David K. Ding, Thomas H. Mclnish, Udomsak Wongchoti

Research Collection Lee Kong Chian School Of Business

We investigate whether behavioral postulations offer any implicit explanation of the country-varying relation between trading volume and price pattern among short-horizon winners/losers in seven Pacific-Basin markets during the period 1990 to 2000. Our findings lend credence to the Lee and Swaminathan [Lee, C. and Swaminathan, B., 2000. Price momentum and trading volume, Journal of Finance 55, 2017-2069.] Momentum Life Cycle explanation that high (low) volume winners (losers) are more likely to experience price reversals, whereas high (low) volume losers (winners), price momentum, in the subsequent period. This observation is especially pronounced in Hong Kong. Other models such as those based …

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A Tale Of Two Prices: Liquidity And Asset Prices In Multiple Markets, Justin Sai Pang Chan, Dong Hong, Marti G. Subrahmanyam Jun 2008

A Tale Of Two Prices: Liquidity And Asset Prices In Multiple Markets, Justin Sai Pang Chan, Dong Hong, Marti G. Subrahmanyam

Research Collection Lee Kong Chian School Of Business

This paper investigates the liquidity effect in asset pricing by studying the liquidity-premium relationship of an American depositary receipt (ADR) and its underlying share. Using the [Amihud, Yakov, 2002. Illiquidity and stock returns: cross-section and time series effects. Journal of Financial Markets 5, 31-56] measure, the turnover ratio and trading infrequency as proxies for liquidity, we show that a higher ADR premium is associated with higher ADR liquidity and lower home share liquidity, in terms of changes in these variables. We find that the liquidity effects remain strong after we control for firm size and a number of country characteristics, …

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Broadening International Perspectives On The Legal Environment For Personnel Selection, Brett Myors, Filip Lievens, Greet Van Hoye, Steven F Cronshaw, Antonio Mladinic, Viviana Rodriguez, Herman Aguinis, Dirk D Steiner, Florence Rolland, Heinz Schuler, Andreas Frintrup, Ioannis Nikolaou, Maria Tomprou, S Subramony, Shabu B Raj, Shay Tzafrir, Peter Bamberger, Marilena Bertolino, Marco Mariani, Franco Fraccaroli Jun 2008

Broadening International Perspectives On The Legal Environment For Personnel Selection, Brett Myors, Filip Lievens, Greet Van Hoye, Steven F Cronshaw, Antonio Mladinic, Viviana Rodriguez, Herman Aguinis, Dirk D Steiner, Florence Rolland, Heinz Schuler, Andreas Frintrup, Ioannis Nikolaou, Maria Tomprou, S Subramony, Shabu B Raj, Shay Tzafrir, Peter Bamberger, Marilena Bertolino, Marco Mariani, Franco Fraccaroli

Research Collection Lee Kong Chian School Of Business

Perspectives from 22 countries on aspects of the legal environment for selection are presented. Issues addressed include a) whether there are racial/ethnic/religious subgroups viewed as “disadvantaged minority”, b) whether research documents mean differences between groups on individual difference measures relevant to job performance, whether there are laws prohibiting discrimination against specific groups, d) what is required to make and refute a claim of discrimination, e) what are the consequences of violation of the laws, f) whether particular selection methods are limited or banned, g) whether preferential treatment of members of minority groups is permitted, and h) whether the practice of …

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Corporate Governance, Shareholder Rights, And Shareholder Rights Plans: Poison, Placebo, Or Prescription?, Gary L. Caton, Jeremy C. Goh Jun 2008

Corporate Governance, Shareholder Rights, And Shareholder Rights Plans: Poison, Placebo, Or Prescription?, Gary L. Caton, Jeremy C. Goh

Research Collection Lee Kong Chian School Of Business

We examine the effect of poison pill adoptions on firm value, controlling for the adopting firm's preexisting corporate governance structure. We find that only companies with the most democratic governance structures, defined as those with the fewest preexisting protective governance provisions, experience significantly positive abnormal stock returns and significantly positive abnormal revisions in five-year earnings growth rate forecasts. Moreover, regression results indicate that abnormal returns and forecast revisions are significantly related to governance structure and not to board composition or subsequent merger activity.

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A Survey Of Audit Committee Members Of Public Listed Companies In Singapore, Kwong Sin Leong, Themin Suwardy, Yang Hoong Pang Jun 2008

A Survey Of Audit Committee Members Of Public Listed Companies In Singapore, Kwong Sin Leong, Themin Suwardy, Yang Hoong Pang

Research Collection School Of Accountancy

This report summarises the results of the survey of audit committee members of public listed companies in Singapore commissionedby the Audit Committee Guidance Committee (ACGC). Funding for this project was provided by School of Accountancy, Singapore Management University. The sampling frame was locally-domiciled audit committee members of publicly listed companies in Singapore. A sample size of 711 would have been adequate to achieve a 95% confidence level, and a 3% confidence interval. The survey was sent out to 873 names and addresses provided by the Accounting and Corporate Regulatory of Singapore on 14 March2008, with a reminder on 4 April …

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Audit Partner Tenure, Audit Firm Tenure, And Discretionary Accruals: Does Long Auditor Tenure Impair Earnings Quality?, Chih-Ying Chen, Chan-Jane Lin, Yu-Chen Lin Jun 2008

Audit Partner Tenure, Audit Firm Tenure, And Discretionary Accruals: Does Long Auditor Tenure Impair Earnings Quality?, Chih-Ying Chen, Chan-Jane Lin, Yu-Chen Lin

Research Collection School Of Accountancy

Mandatory audit partner relation has been adopted in some countries while audit firm rotation is still being debated in many places. Most of the extant research on the relation between auditor tenure and earnings quality provides evidence at the audit firm level. However, since audit firm tenure is correlated with partner tenure and audit firm rotation is more costly than partner rotation, it is important to know whether earnings quality is related to audit firm tenure, partner tenure, or both. We investigate this issue using a sample of Taiwanese companies for which the audit report must be signed by two …

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The Association Between Excess Audit Fees And Audit Quality: A Us-Uk Comparison, Soongsoo Han, Tony Kang, Yong Keun Yoo Jun 2008

The Association Between Excess Audit Fees And Audit Quality: A Us-Uk Comparison, Soongsoo Han, Tony Kang, Yong Keun Yoo

Research Collection School Of Accountancy

Prior studies that examine the association between excess audit fees and audit quality (measured by discretionary accruals) using US data fail to document a significant association. However, there is no convincing explanation for this result to date. In this study, we test a cancellation hypothesis, which suggests that the non-association might be due to the cancellation effect between the risk-effort effect and the bonding effect that excess fees capture. To the extent that excess fees capture the compensation for effort the auditor puts in for a risky client, which is not captured in the existing audit fee models (the risk-effort …

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Use Of Cognitive Mapping Techniques In Information Systems Development, Keng Siau, X. Tan Jun 2008

Use Of Cognitive Mapping Techniques In Information Systems Development, Keng Siau, X. Tan

Research Collection School Of Computing and Information Systems

Cognitive mapping techniques as a communication tool can be used in various information systems (IS) development and implementation activities. The three major cognitive mapping techniques include causal mapping, semantic mapping, and concept mapping. A causal map represents a set of causal relationships among constructs within a belief system. Semantic mapping, also known as idea mapping, is used to explore an idea without the constraints of a superimposed structure. The result of concept mapping is a graphical representation in which nodes represent concepts and links represent the relationships between concepts. Cognitive mapping techniques have been proposed to be applied in requirements …

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The Evolution Of Human Rights Thinking In North Korea, Robert Weatherley, Jiyoung Song Jun 2008

The Evolution Of Human Rights Thinking In North Korea, Robert Weatherley, Jiyoung Song

Research Collection School of Social Sciences

The official discourse of human rights in North Korea has shown signs of evolution in recent times, reflecting a variety of philosophical foundations and a need to respond to mounting criticism from the West. While Confucianism and Marxism have been key in influencing North Korean rights thinking, some of the more recent official pronouncements on rights have a distinctly nationalistic or ‘juche-oriented’ complexion. This shift in emphasis reflects the growing importance of juche to North Korea's state ideology in light of what is perceived as an increasingly hostile international environment that has confronted North Korea since the end of the …

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Do Family Firms Provide More Or Less Voluntary Disclosure?, Xia Chen, Shuping Chen, Qiang Cheng Jun 2008

Do Family Firms Provide More Or Less Voluntary Disclosure?, Xia Chen, Shuping Chen, Qiang Cheng

Research Collection School Of Accountancy

We examine the voluntary disclosure practices of family firms. We find that, compared to nonfamily firms, family firms provide fewer earnings forecasts and conference calls, but more earnings warnings. Whereas the former is consistent with family owners having a longer investment horizon, better monitoring of management, and lower information asymmetry between owners and managers, the higher likelihood of earnings warnings is consistent with family owners having greater litigation and reputation cost concerns. We also document that family ownership dominates nonfamily insider ownership and concentrated institutional ownership in explaining the likelihood of voluntary disclosure. Using alternative proxies for the founding family's …

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Gaussian Inference In Ar(1) Time Series With Or Without A Unit Root, Peter C. B. Phillips, Chirok Han Jun 2008

Gaussian Inference In Ar(1) Time Series With Or Without A Unit Root, Peter C. B. Phillips, Chirok Han

Research Collection School Of Economics

This paper introduces a simple first-difference-based approach to estimation and inference for the AR(1) model. The estimates have virtually no finite-sample bias and are not sensitive to initial conditions, and the approach has the unusual advantage that a Gaussian central limit theory applies and is continuous as the autoregressive coefficient passes through unity with a uniform rate of convergence. En route, a useful central limit theorem (CLT) for sample covariances of linear processes is given, following Phillips and Solo (1992, Annals of Statistics, 20, 971–1001). The approach also has useful extensions to dynamic panels.

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Grasping The Small: The Political Economy Of Growth, Poverty And The Role Of The State In Two Chinese Provinces, John A. Donaldson Jun 2008

Grasping The Small: The Political Economy Of Growth, Poverty And The Role Of The State In Two Chinese Provinces, John A. Donaldson

Research Collection School of Social Sciences

No abstract provided.

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Traceable And Retrievable Identity-Based Encryption, Man Ho Au, Qiong Huang, Joseph K. Liu, Willy Susilo, Duncan S. Wong, Guomin Yang Jun 2008

Traceable And Retrievable Identity-Based Encryption, Man Ho Au, Qiong Huang, Joseph K. Liu, Willy Susilo, Duncan S. Wong, Guomin Yang

Research Collection School Of Computing and Information Systems

Very recently, the concept of Traceable Identity-based Encryption (IBE) scheme (or Accountable Authority Identity based Encryption scheme) was introduced in Crypto 2007. This concept enables some mechanisms to reduce the trust of a private key generator (PKG) in an IBE system. The aim of this paper is threefold. First, we discuss some subtleties in the first traceable IBE scheme in the Crypto 2007 paper. Second, we present an extension to this work by having the PKG’s master secret key retrieved automatically if more than one user secret key are released. This way, the user can produce a concrete proof of …

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Electric Elves: What Went Wrong And Why, Milind Tambe, Emma Bowring, Jonathan Pearce, Pradeep Reddy Varakantham, Paul Scerri, David V. Pynadath Jun 2008

Electric Elves: What Went Wrong And Why, Milind Tambe, Emma Bowring, Jonathan Pearce, Pradeep Reddy Varakantham, Paul Scerri, David V. Pynadath

Research Collection School Of Computing and Information Systems

Software personal assistants continue to be a topic of significant research interest. This article outlines some of the important lessons learned from a successfully-deployed team of personal assistant agents (Electric Elves) in an office environment. In the Electric Elves project, a team of almost a dozen personal assistant agents were continually active for seven months. Each elf (agent) represented one person and assisted in daily activities in an actual office environment. This project led to several important observations about privacy, adjustable autonomy, and social norms in office environments. In addition to outlining some of the key lessons learned we outline …

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Capacity Constrained Assignment In Spatial Databases, Hou U Leong, Man Lung Yiu, Kyriakos Mouratidis, Nikos Mamoulis Jun 2008

Capacity Constrained Assignment In Spatial Databases, Hou U Leong, Man Lung Yiu, Kyriakos Mouratidis, Nikos Mamoulis

Research Collection School Of Computing and Information Systems

Given a point set P of customers (e.g., WiFi receivers) and a point set Q of service providers (e.g., wireless access points), where each q 2 Q has a capacity q.k, the capacity constrained assignment (CCA) is a matching M Q × P such that (i) each point q 2 Q (p 2 P) appears at most k times (at most nce) in M, (ii) the size of M is maximized (i.e., it comprises min{|P|,P q2Q q.k} pairs), and (iii) the total assignment cost (i.e., the sum of Euclidean distances within all pairs) is minimized. Thus, the CCA problem is …

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Utility-Based Adaptation In Mission-Oriented Wireless Sensor Networks, Sharanya Eswaran, Archan Misra, Thomas La Porta Jun 2008

Utility-Based Adaptation In Mission-Oriented Wireless Sensor Networks, Sharanya Eswaran, Archan Misra, Thomas La Porta

Research Collection School Of Computing and Information Systems

This paper extends the distributed network utility maximization (NUM) framework to consider the case of resource sharing by multiple competing missions in a military-centric wireless sensor network (WSN) environment. Prior work on NUM-based optimization has considered unicast flows with sender-based utilities in either wireline or wireless networks. We extend the NUM framework to consider three key new features observed in mission-centric WSN environments: i) the definition of an individual mission's utility as a joint function of data from multiple sensor sources ii) the consumption of each senders (sensor) data by multiple receivers (missions) and iii) the multicast-tree based dissemination of …

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Localized Minimum-Latency Broadcasting In Multi-Radio Multi-Rate Wireless Mesh Networks, Junaid Qadir, Chun Tung Chou, Archan Misra, Joo Ghee Lim Jun 2008

Localized Minimum-Latency Broadcasting In Multi-Radio Multi-Rate Wireless Mesh Networks, Junaid Qadir, Chun Tung Chou, Archan Misra, Joo Ghee Lim

Research Collection School Of Computing and Information Systems

We address the problem of minimizing the worst-case broadcast delay in ldquomulti-radio multi-channel multi-rate wireless mesh networksrdquo (MR2-MC WMN) in a distributed and localized fashion. Efficient broadcasting in such networks is especially challenging due to the desirability of exploiting the ldquowireless broadcast advantagerdquo (WBA), the interface-diversity, the channel-diversity and the rate-diversity offered by these networks. We propose a framework that calculates a set of forwarding nodes and transmission rate at these forwarding nodes irrespective of the broadcast source. Thereafter, a forwarding tree is constructed taking into consideration the source of broadcast. Our broadcasting algorithms are distributed and utilize locally available …

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Global Terror And Organised Crime: Symbiotic Or Synonymous, Mark Findlay Jun 2008

Global Terror And Organised Crime: Symbiotic Or Synonymous, Mark Findlay

Research Collection Yong Pung How School Of Law

This paper is not a detailed denial of the difference between organised crime as the aggregation of illicit wealth, and terrorism which may not be concerned with economic profit. It takes as given the primary political context for terrorism and the enterprise environment of organised crime.

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Time-Varying Incentives In The Mutual Fund Industry, Jacques Olivier, Anthony S. Tay Jun 2008

Time-Varying Incentives In The Mutual Fund Industry, Jacques Olivier, Anthony S. Tay

Research Collection School Of Economics

This paper re-examines the incentives of mutual fund managers arising from investor flows. We provide evidence that the convexity of the flow-performance relationship varies with economic activity. We show that the effect is economically large and is not driven by abnormal years. We test two possible channels through which this pattern may arise. We investigate implications of the timevarying convexity for the incentives of managers to alter strategically the risk of their portfolios. We provide evidence that poor mid-year performers increase the risk of the portfolio only when economic activity is strong. Finally, we briefly discuss some methodological implications.

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A Multimodal And Multilevel Ranking Scheme For Large-Scale Video Retrieval, Steven C. H. Hoi, Michael R. Lyu Jun 2008

A Multimodal And Multilevel Ranking Scheme For Large-Scale Video Retrieval, Steven C. H. Hoi, Michael R. Lyu

Research Collection School Of Computing and Information Systems

A critical issue of large-scale multimedia retrieval is how to develop an effective framework for ranking the search results. This problem is particularly challenging for content-based video retrieval due to some issues such as short text queries, insufficient sample learning, fusion of multimodal contents, and large-scale learning with huge media data. In this paper, we propose a novel multimodal and multilevel (MMML) ranking framework to attack the challenging ranking problem of content-based video retrieval. We represent the video retrieval task by graphs and suggest a graph based semi-supervised ranking (SSR) scheme, which can learn with small samples effectively and integrate …

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Semi-Supervised Svm Batch Mode Active Learning For Image Retrieval, Steven Hoi, Rong Jin, Jianke Zhu, Michael R. Lyu Jun 2008

Semi-Supervised Svm Batch Mode Active Learning For Image Retrieval, Steven Hoi, Rong Jin, Jianke Zhu, Michael R. Lyu

Research Collection School Of Computing and Information Systems

Active learning has been shown as a key technique for improving content-based image retrieval (CBIR) performance. Among various methods, support vector machine (SVM) active learning is popular for its application to relevance feedback in CBIR. However, the regular SVM active learning has two main drawbacks when used for relevance feedback. First, SVM often suffers from learning with a small number of labeled examples, which is the case in relevance feedback. Second, SVM active learning usually does not take into account the redundancy among examples, and therefore could select multiple examples in relevance feedback that are similar (or even identical) to …

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