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Machine-Assisted Proof Support For Validation Beyond Simulink, Chunqing Chen, Jin Song Dong, Jun Sun Nov 2007

Machine-Assisted Proof Support For Validation Beyond Simulink, Chunqing Chen, Jin Song Dong, Jun Sun

Research Collection School Of Computing and Information Systems

Simulink is popular in industry for modeling and simulating embedded systems. It is deficient to handle requirements of high-level assurance and timing analysis. Previously, we showed the idea of applying Timed Interval Calculus (TIC) to complement Simulink. In this paper, we develop machine-assisted proof support for Simulink models represented in TIC. The work is based on a generic theorem prover, Prototype Verification System (PVS). The TIC specifications of both Simulink models and requirements are transformed to PVS specifications automatically. Verification can be carried out at interval level with a high level of automation. Analysis of continuous and discrete behaviors is …

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Giving Voice To The Religious, Seow Hon Tan Oct 2007

Giving Voice To The Religious, Seow Hon Tan

Research Collection Yong Pung How School Of Law

The relevance of moral values endorsed by religious persons in public decision-making has often been debated. The issue comes to the fore again in relation to the debate on Section 377A of the Penal Code dealing with acts of gross indecency between males. With the flourishing of diverse viewpoints that is a natural consequence of a liberal democratic society, and with greater participation by an increasingly sophisticated citizenry online and in the media, particularly in a nation in which those without religious affiliations make up only 15 per cent of the population, the ground rules of public discourse must be …

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A Two-Phase Approach To Interactivity Enhancement For Large-Scale Distributed Virtual Environments, Nguyen Binh Duong Ta, Suiping Zhou Oct 2007

A Two-Phase Approach To Interactivity Enhancement For Large-Scale Distributed Virtual Environments, Nguyen Binh Duong Ta, Suiping Zhou

Research Collection School Of Computing and Information Systems

Distributed virtual environments (DVEs) are distributed systems that allow multiple geographically distributed clients (users) to interact simultaneously in a computer-generated, shared virtual world. Applications of DVEs can be seen in many areas nowadays, such as online games, military simulations, collaborative designs, etc. To support large-scale DVEs with real-time interactions among thousands or even more distributed clients, a geographically distributed server architecture (GDSA) is generally needed, and the virtual world can be partitioned into many distinct zones to distribute the load among the servers. Due to the geographic distributions of clients and servers in such architectures, it is essential to efficiently …

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Top Performing Hedge Funds: Does Geography Make A Difference?, Knowledge@Smu Oct 2007

Top Performing Hedge Funds: Does Geography Make A Difference?, Knowledge@Smu

Knowledge@SMU

Do hedge funds earn above-average returns? Is there a way to identify these top performers? Where hedge funds are located makes the difference, according to Singapore Management University finance professor Melvyn Teo, who is also director of the university’s BNP Paribas Hedge Fund Centre. Teo puts forward evidence for the hypothesis that locally-managed hedge funds are better able to monitor their investments and, therefore, generate superior returns.

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The Business Of Healthcare: A Slippery Slope?, Knowledge@Smu Oct 2007

The Business Of Healthcare: A Slippery Slope?, Knowledge@Smu

Knowledge@SMU

In Singapore, healthcare consumes 3.7% of GDP and is rising. Jeremy Lim, director of policy and research at Singapore Health Services (SingHealth), was the featured speaker at a recent Singapore Management University Wee Kim Wee Centre event. Lim trained as a surgeon before moving into healthcare management and health services research. He talked to Knowledge@SMU about the business opportunities and challenges in Singapore’s healthcare sector.

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The Power Of Social Media: Only The Tip Of The Iceberg?, Knowledge@Smu Oct 2007

The Power Of Social Media: Only The Tip Of The Iceberg?, Knowledge@Smu

Knowledge@SMU

Social media is redefining the way people and companies around the world communicate with one another by dissolving geographical and cultural boundaries. Akanksha Goel, newly appointed Editor-in-Chief of Stuff Singapore -- a gadgets and technology lifestyle publication launched in the UK five years ago -- is a final-year marketing and corporate communication student at Singapore Management University. Goel talked to Knowledge@SMU about how social media compels us to rethink culture, and why companies should take advantage of these new channels to grow their businesses.

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Michael Spence On The Growth Commission: Charting The Unknown To Stimulate And Sustain Development, Knowledge@Smu Oct 2007

Michael Spence On The Growth Commission: Charting The Unknown To Stimulate And Sustain Development, Knowledge@Smu

Knowledge@SMU

The Commission on Growth and Development, launched in April 2006 by the World Bank and four other sponsors, is chaired by Nobel laureate Michael Spence, former dean of the Stanford Graduate School of Business. On a recent visit to Singapore, Spence addressed an audience of business leaders and academics at the Singapore Management University on “Growth Strategies and Dynamics: Insights from Country Experiences,” drawing on examples from the developing world as well as Singapore.

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The Oil And Gas Industry In Asia: Fuelling Growth At A Cost, Knowledge@Smu Oct 2007

The Oil And Gas Industry In Asia: Fuelling Growth At A Cost, Knowledge@Smu

Knowledge@SMU

According to the BP Statistical Review of World Energy 2007, China alone accounts for 15% of global energy consumption and 70% of growth in the consumption of coal. The review describes "robust demand" for oil and gas in Asia overall despite high prices. Dennis Ang, president of Statoil Asia Pacific, the Singapore based affiliate of Norway's largest company, shares his views with Knowledge@SMU on global energy issues, the environmental impacts of Asia’s fast growing demand for energy, and how the region could do more to move towards a`greener’ future.

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The Eu's "Sanctions Paradox", Portela, Clara Oct 2007

The Eu's "Sanctions Paradox", Portela, Clara

Research Collection School of Social Sciences

The forthcoming Summit meeting between the European Union (EU) and Africa next December will be the first event of this kind in the past seven years. However, the row over the participation of Zimbabwe’s President, Robert Mugabe, is casting a shadow over the upcoming event: A number of African states have threatened to boycott the meeting if Zimbabwe's leader is not invited, while the British government has indicated that it will not attend the meeting if he does. At the root of this row is an “EU sanction”: a visa ban prohibiting the entry into EU territory to Zimbabwean high-rank …

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Prediction Software Identifies Cellphone, Cable And Internet Subscribers Who Are Likely To Defect And When, Knowledge@Smu Oct 2007

Prediction Software Identifies Cellphone, Cable And Internet Subscribers Who Are Likely To Defect And When, Knowledge@Smu

Knowledge@SMU

Winning new customers is expensive. More businesses are acting proactively to forestall losing existing clients by using predictive software to help pinpoint those likely to defect. Singapore Management University marketing professor Andre Bonfrer is working in partnership with George Knox (Tilburg University), Jehoshua Eliashberg (The Wharton School) and Jeongwen Chiang (Cheung Kong Graduate School of Business) to develop a predictive model targeted at the subscription-based service sector.

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Minimum Profitability Ruling A Boon Or Bane? Some Lessons From China, Knowledge@Smu Oct 2007

Minimum Profitability Ruling A Boon Or Bane? Some Lessons From China, Knowledge@Smu

Knowledge@SMU

China’s Securities Regulatory Commission (CSRC) stands out in its approach to tighten restrictions for listed companies wanting to initiate rights issues or seasoned equity offerings (SEOs). The country’s experience, relevant to other emerging markets, is the subject of a research paper published recently in the International Journal of Accounting, co-authored by Kevin C.W. Chen, accounting professor at the Hong Kong University of Science and Technology and Singapore Management University accounting professor Jiwei Wang. --------------------------------------------------------------------------------

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Singapore Management University Receives Friend Of The Arts Award, Singapore Management University Oct 2007

Singapore Management University Receives Friend Of The Arts Award, Singapore Management University

SMU Press Releases and News

No abstract provided.

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Forecasting In Rapidly Changing Environments: An Application To The Us Motion Picture Industry, Anirban Mukherjee, Kadiyali Vrinda Oct 2007

Forecasting In Rapidly Changing Environments: An Application To The Us Motion Picture Industry, Anirban Mukherjee, Kadiyali Vrinda

Research Collection Lee Kong Chian School Of Business

Markets with rapidly changing environments provide forecasting challenges because of fewer similarities between past and future outcomes. In this paper, we provide a methodology that enables forecasting with relatively short histories. The application is to the U.S. motion picture industry where we forecast revenues in theatrical, sales (DVD and VHS), and rental channels. Using short market histories of similar products, we account for (1) observed and unobserved movie-specific characteristics, (2) seasonality of demand, (3) competition within and across multiple distribution channels (4) market expansion, substitution and complementarity between movies inside and across distribution channels. We extend the multiplicative competitive interaction …

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European Venture Capital Market: Scaling Beyond Current Boundaries, Gerard George, Eva Nathusius Oct 2007

European Venture Capital Market: Scaling Beyond Current Boundaries, Gerard George, Eva Nathusius

Research Collection Lee Kong Chian School Of Business

This study systematically documents the perceptions of LPs, venture capitalists and entrepreneurs and their views of the trends and challenges facing the European venture capital market. The interest from LPs in European venture capital funds was found to be neutral to marginally negative because of historical returns. However, buoyancy in the supply of high quality opportunities at reasonable valuations has the potential to improve this outlook. The findings suggest that European venture capitalists still face structural barriers in the form of heterogeneous consumer preferences, improving but weak exit and fundraising environments, and the scarcity of LPs of significant size. The …

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Introduction To Li Ka Shing Library And Creation Of A Digital Library, Ruth Pagell Oct 2007

Introduction To Li Ka Shing Library And Creation Of A Digital Library, Ruth Pagell

Research Collection Library

The presentation gave the history of the Li Ka Shing Library at Singapore Management University and the creation of the digital library.

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Antecedents And Outcomes Of Perceived Locus Of Causality: An Application Of Self-Determination Theory, Daniel B. Turban, Hwee Hoon Tan, Kenneth G. Brown, Kennon M. Sheldon Oct 2007

Antecedents And Outcomes Of Perceived Locus Of Causality: An Application Of Self-Determination Theory, Daniel B. Turban, Hwee Hoon Tan, Kenneth G. Brown, Kennon M. Sheldon

Research Collection Lee Kong Chian School Of Business

We extended self-determination theory by examining personality antecedents and self-regulatory consequences of perceived locus of causality (PLOC), which is the extent to which individuals perceive their actions as caused by internal or external reasons. We theorized that personality would influence PLOC and that individuals with internal PLOC would engage in more self-regulatory activities, which would in turn predict performance and enjoyment. We used structural equation modeling with data collected from 260 students at 4 time points to test our hypotheses. The model fit the data well. Although personality had direct effects on the self-regulatory activities of effort and meta-cognitive strategies, …

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Research And Development Project Valuation And Licensing Negotiations At Phytopharm Plc, Pascale Crama, Bert De Reyck, Zeger Degraeve, Wang Chong Oct 2007

Research And Development Project Valuation And Licensing Negotiations At Phytopharm Plc, Pascale Crama, Bert De Reyck, Zeger Degraeve, Wang Chong

Research Collection Lee Kong Chian School Of Business

We describe a research and development project-valuation model developed for Phytopharm plc, a pharmaceutical development and functional food company based in Cambridgeshire, United Kingdom. Phytopharm uses the model to value the projects in its research and development portfolio, and in licensing negotiations with potential product development and marketing partners. We include different valuation methods, including net present value, decision analysis, and Monte Carlo simulation. We also consider the technological risks of product development, as well as the uncertainty of commercial success. In addition to determining a value for a product in development, the model proposes appropriate licensing contract structures. A …

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Do Direct Cash Flow Disclosures Help Predict Future Operating Cash Flows And Earnings?, Steven Francis Orpurt, Yoonseok Zang Oct 2007

Do Direct Cash Flow Disclosures Help Predict Future Operating Cash Flows And Earnings?, Steven Francis Orpurt, Yoonseok Zang

Research Collection School Of Accountancy

Motivated by recent FASB, IASB and CFA Institute comments, we extend the scant literature on direct method cash flow disclosures by exploring their predictive ability. A primary stated purpose of the direct method is to better forecast future operating performance. To test this purpose, we use a FERC (future ERC) methodology, finding that firms voluntarily producing direct method statements reflect more information about future earnings in their current stock returns than other firms. Supporting our FERC analysis, we document that substantial articulation errors exist when direct method cash flow components are estimated from either indirect method cash flow statements or …

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I Tube, You Tube, Everybody Tubes: Analyzing The World’S Largest User Generated Content Video System, Meeyoung Cha, Haewoon Kwak, Pablo Rodriguez, Yong-Yeol Ahn, Sue. Moon Oct 2007

I Tube, You Tube, Everybody Tubes: Analyzing The World’S Largest User Generated Content Video System, Meeyoung Cha, Haewoon Kwak, Pablo Rodriguez, Yong-Yeol Ahn, Sue. Moon

Research Collection School Of Computing and Information Systems

User Generated Content (UGC) is re-shaping the way people watch video and TV, with millions of video producers and consumers. In particular, UGC sites are creating new viewing patterns and social interactions, empowering users to be more creative, and developing new business opportunities. To better understand the impact of UGC systems, we have analyzed YouTube, the world's largest UGC VoD system. Based on a large amount of data collected, we provide an in-depth study of YouTube and other similar UGC systems. In particular, we study the popularity life-cycle of videos, the intrinsic statistical properties of requests and their relationship with …

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Differentiating Knowledge Processes In Organisational Learning: A Case Of ‘Two Solitudes’, Siu Loon Hoe, Steven L. Mcshane Oct 2007

Differentiating Knowledge Processes In Organisational Learning: A Case Of ‘Two Solitudes’, Siu Loon Hoe, Steven L. Mcshane

Research Collection School Of Computing and Information Systems

The fields of organizational behaviour (OB)/strategy and marketing have taken different paths over the past two decades to understanding organisational learning. OB/strategy has been pre-occupied with theory development and case study illustrations, whereas marketing research has taken a highly quantitative path. Although relying on essentially the same foundation theory, these two solitudes have had minimal cross-fertilisation. Furthermore, both fields tend to blur or usually ignore the distinction between structural and informal knowledge processes. The marketing literature, in particular, relies on the MARKOR scale, which measures structural knowledge processes. Informal knowledge acquisition and dissemination processes are almost completely ignored. The purpose …

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The Office Killjoy, M. Thulasidas Oct 2007

The Office Killjoy, M. Thulasidas

Research Collection School Of Computing and Information Systems

If you think stress makes you more productive, then you need to change. HOW can we manage stress, given that it is unavoidable in our corporate existence?

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Connected Lives And Embeddedness: Reading Zelizer With Granovetter – A Review And Critique, Deirdre Caputo-Levine, Alwyn Lim, Celine. Wills Oct 2007

Connected Lives And Embeddedness: Reading Zelizer With Granovetter – A Review And Critique, Deirdre Caputo-Levine, Alwyn Lim, Celine. Wills

Research Collection School of Social Sciences

Our concern is to read Viviana Zelizer’s Purchase of Intimacy inrelation to Mark Granovetter’s embeddedness framework. We compare Zelizer’s connected-lives approach to the embeddedness literature in orderto tease out the similarities, differences, and improvements in the wayseconomic sociologists examine the intertwining of economic and socialbehavior. We argue that although Zelizer and Granovetter both focus onthis intermeshing of socioeconomic action, their perspectives reflect theirdiffering starting points: economic transactions or intimate relationships.We believe Zelizer’s connected-lives approach gives fresh insight to thenew economic sociology but we have some reservations regarding hertreatment of reciprocity and power in intimate relationships.

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Cross-Cultural Differences In Learning And Education: Stereotypes, Myths And Realities, Gerhard Apfelthaler, Katrin Hansen, Stephan Keuchel, Christa Mueller, Martin Neubauer, Siow-Heng Ong, Nirundon Tapachai Oct 2007

Cross-Cultural Differences In Learning And Education: Stereotypes, Myths And Realities, Gerhard Apfelthaler, Katrin Hansen, Stephan Keuchel, Christa Mueller, Martin Neubauer, Siow-Heng Ong, Nirundon Tapachai

Research Collection Lee Kong Chian School Of Business

Despite the fact that both learning styles and cross-cultural differences have been important research topics for decades, surprisingly little work has been done on comparisons of learning behaviour across cultures and its impact for teachers working in culturally mixed settings. This chapter is based on a research project funded by the European Union seeking to provide fresh knowledge on cross-national differences in attitudes towards learning of students from selected countries. It reports on the results from Austria, Germany, Singapore and Thailand and outlines some of the implications for teaching in higher education.

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Tournaments With Ex Post Heterogeneous Agents, Theofanis Tsoulouhas, Kosmas Marinakis Oct 2007

Tournaments With Ex Post Heterogeneous Agents, Theofanis Tsoulouhas, Kosmas Marinakis

Research Collection School Of Economics

This paper compares relative performance evaluation via tournaments to absolute performance evaluation via piece rates when agents are heterogeneous ex post, to make the point that agent heterogeneity compromises the insurance function of tournaments. In particular, we show that the more heterogeneous agents are the less insurance can be offered through tournaments and the less dominant tournaments are over piece rates. Thus, absolute performance piece rates should be preferred when agents are highly heterogeneous. However, even with heterogeneous agents, tournaments become more desirable when the number of agents or the uncertainty about the common shock increases sufficiently.

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Direction-Of-Change Forecasts Based On Conditional Variance, Skewness And Kurtosis Dynamics: International Evidence, Peter F. Christoffersen, Francis X. Diebold, Roberto S. Mariano, Anthony S. Tay, Yiu Kuen Tse Oct 2007

Direction-Of-Change Forecasts Based On Conditional Variance, Skewness And Kurtosis Dynamics: International Evidence, Peter F. Christoffersen, Francis X. Diebold, Roberto S. Mariano, Anthony S. Tay, Yiu Kuen Tse

Research Collection School Of Economics

Recent theoretical work has revealed a direct connection between asset return volatility forecastability and asset return sign forecastability. This suggests that the pervasive volatility forecastability in equity returns could, via induced sign forecastability, be used to produce direction-of change forecasts useful for market timing. We attempt to do so in an international sample of developed equity markets, with some success, as assessed by formal probability forecast scoring rules such as the Brier score. An important ingredient is our conditioning not only on conditional mean and variance information, but also conditional skewness and kurtosis information, when forming direction-of-change forecasts.

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Wage Inequality, Intergenerational Mobility, And Education In Singapore, Kong Weng Ho Oct 2007

Wage Inequality, Intergenerational Mobility, And Education In Singapore, Kong Weng Ho

Research Collection School Of Economics

Accompanying Singapore’s phenomenal economic growth over the past four decades has been a rapid increase in educational attainment over the years. In 1960, the mean years of schooling for residents aged 25 and over was 3.14 years; in 2006, it was 9.3 years. This dramatic increase in the supply of skilled labour in all sectors of the economy helped to power Singapore’s high growth rates over the past few decades of economic development, which also saw declining wage inequality and high upward intergenerational mobility in education. However, we need to ask if these trends will continue in the future and …

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Sketchwizard: Wizard Of Oz Prototyping Of Pen-Based User Interfaces, Richard C. Davis, T. Scott Saponas, Michael Shilman, James A. Landay Oct 2007

Sketchwizard: Wizard Of Oz Prototyping Of Pen-Based User Interfaces, Richard C. Davis, T. Scott Saponas, Michael Shilman, James A. Landay

Research Collection School Of Computing and Information Systems

SketchWizard allows designers to create Wizard of Oz prototypes of pen-based user interfaces in the early stages of design. In the past, designers have been inhibited from participating in the design of pen-based interfaces because of the inadequacy of paper prototypes and the difficulty of developing functional prototypes. In SketchWizard, designers and end users share a drawing canvas between two computers, allowing the designer to simulate the behavior of recognition or other technologies. Special editing features are provided to help designers respond quickly to end-user input. This paper describes the SketchWizard system and presents two evaluations of our approach. The …

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Preserving Privacy In Supply Chain Management: A Challenge For Next Generation Data Mining, Madhu Ahluwalia, Zhiyuan Chen, Arrya Gangopadhyay, Zhiling Guo Oct 2007

Preserving Privacy In Supply Chain Management: A Challenge For Next Generation Data Mining, Madhu Ahluwalia, Zhiyuan Chen, Arrya Gangopadhyay, Zhiling Guo

Research Collection School Of Computing and Information Systems

In this paper we identify a major area of research as a topic for next generation data mining. The research effort in the last decade on privacy preserving data mining has resulted in the development of numerous algorithms. However, most of the existing research has not been applied in any particular application context. Hence it is unclear whether the current algorithms are directly applicable in any particular problem context. In this paper we identify a significant application context that not only requires protection of privacy but also sophisticated data analysis. The area in question is supply chain management, arguably one …

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Norming "Moderation'' In An "Iconic Target'': Public Policy And The Regulation Of Religious Anxieties In Singapore, Eugene K. B. Tan Oct 2007

Norming "Moderation'' In An "Iconic Target'': Public Policy And The Regulation Of Religious Anxieties In Singapore, Eugene K. B. Tan

Research Collection Yong Pung How School Of Law

The proposed research will examine Singapore’s response to terrorism post September 11, in particular the maintenance of a “moderate mainstream” Muslim community as a bulwark against the fraying of harmonious ethnic relations. In light of the global concern—and often paranoia—with diasporic Islam, Islamic religious institutions and civil society have been portrayed in the popular media as hotbeds of radicalism, promoters of hatred, and recruiters for a ‘conflict of civilization’ between the Muslim world and the modern world. Islamist attacks in Madrid and London have since brought increased urgency to the question of how to contain or moderate Islamic radicalism among …

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Performance Of Network-Coding In Multi-Rate Wireless Environments For Multicast Applications, Luiz F. M. Viera, Archan Misra, Mario Gerla Oct 2007

Performance Of Network-Coding In Multi-Rate Wireless Environments For Multicast Applications, Luiz F. M. Viera, Archan Misra, Mario Gerla

Research Collection School Of Computing and Information Systems

This paper investigates the interaction between net-work coding and link-layer transmission rate diversity in multi-hop wireless networks. By appropriately mixing data packets at intermediate nodes, network coding allows a single multicast flow to achieve higher throughput to a set of receivers. Broadcast applications can also exploit link-layer rate diversity, whereby individual nodes can transmit at faster rates at the expense of corresponding smaller coverage area. We first demonstrate how combining rate-diversity with network coding can provide a larger capacity for data dissemination of a single multicast flow, and how consideration of rate diversity is critical for maximizing system throughput. We …

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