Digital Commons Network^™

Solving The Teacher Assignment-Course Scheduling Problem By A Hybrid Algorithm, Aldy Gunawan, Kien Ming Ng, Kim Leng Poh

Research Collection School Of Computing and Information Systems

This paper presents a hybrid algorithm for solving atimetabling problem, which is commonly encountered in manyuniversities. The problem combines both teacher assignment andcourse scheduling problems simultaneously, and is presented as amathematical programming model. However, this problem becomesintractable and it is unlikely that a proven optimal solution can beobtained by an integer programming approach, especially for largeproblem instances. A hybrid algorithm that combines an integerprogramming approach, a greedy heuristic and a modified simulatedannealing algorithm collaboratively is proposed to solve the problem.Several randomly generated data sets of sizes comparable to that ofan institution in Indonesia are solved using the proposed algorithm.Computational results …

Editors' Introduction, Robert John Kauffman, Jae Kyu Lee, Norman M. Sadeh

Research Collection School Of Computing and Information Systems

This issue features a blend of empirical studies andtechnology-related articles, covering a number of aspectsof e-commerce research and industry applications. Thecontent includes works on online advertising and customerservice on the Internet, the social and human aspects ofradio frequency identification (RFID), the usability of theWeb, content delivery and wireless local area networks,electronic auctions, micropayments, and e-government.This reflects the editorial mission of this journal, which isto attract a breadth of scholarship from the Computer Science and technical research community, the InformationSystems and Technology research community, and fromthe Management, Strategy, Marketing, Operations, Finance and Policy communities associated with businessschools and schools of public …

Editors' Introduction: Ecra Vol. 6, No. 4, Patrick Y. K. Chau, Robert J. Kauffman, Norman M. Sadeh, J. Christopher Westland

Research Collection School Of Computing and Information Systems

This issue features a total of 13 articles. The first four articles are part of a special section on “Intelligent agents in e-services”, edited by Professors William K. Cheung and Jane Y. Hsu under the supervision of Professor Robert J. Kauffman. Summaries of articles appearing in the special section are provided in the guest editors’ introduction. The following is a summary of the nine regular submission articles also published in this issue. The review of these articles was kindly coordinated by Professor Jae Kyu Lee, former Editor in Chief of ECRA.

The general submission articles in this issue focus on …

Interpreting Bills Of Rights: The Value Of A Comparative Approach, Jack Tsen-Ta Lee

Research Collection Yong Pung How School Of Law

In certain jurisdictions, among them Malaysia, Singapore, and the United States, the practice of consulting comparative legal materials in interpreting domestic bills of rights has been criticized as illegitimate. This article examines four main concerns: (1) the texts of bills of rights -- the argument that a bill of rights is to be interpreted within its own four walls and not in the light of analogies drawn from other jurisdictions; (2) national identity -- the argument that a bill of rights embodies the values of a nation's people, and it is wrong to refer to foreign experiences to determine such …

Sustaining The Household In A Globalizing World: The Gendered Dynamics Of Business Travel In Singapore Households, Shirlena Huang, Brenda S. A. Yeoh, Paulin Tay Straughan

Research Collection School of Social Sciences

This article draws upon a large-scale survey as well as focus group discussions to examine how Singapore households grapple with the demands of participating in globalized work. It highlights the household as a site of analysis, where individuals engage with contemporary trends of globalisation in their daily lives. Specifically, this article examines the case of Singapore households where one or both spouses engage in business travel. The study (a) emphasises the need to focus on processes that bring about shorter-term transnational variations to a household's daily geographies and how household members negotiate these disruptions; and (b) demonstrates that the transnationalizing …

What Explains Credit Default Swaps Bid-Ask Spread?, Yaru Chen

Dissertations and Theses Collection (Open Access)

The pace at which the Credit default swaps (CDS) has been growing since its inception topped all projections. Despite the rapid growth, there is still room for enhancement of liquidity in the CDS market. Asymmetric information is another concern of investors in CDS market, however, some literature addressed that it may not be as serious as regarded. Bid-ask spreads is commonly used as a proxy of both liquidity and asymmetric information. Our empirical study confirms that CDS bid-ask spread has explanatory power to CDS premium. We then investigate the liquidity component in CDS bid-ask spreads. We use the bond age, …

On The Calibration Of The Libor Market Model, U Lagunzad Demelinda

Dissertations and Theses Collection (Open Access)

This thesis presents a study of LIBOR market model calibration. In particular, the study builds on the prevailing calibration methodologies in an attempt to find a method that simultaneously recovers implied volatility and forward rate correlations structures from market prices of plain vanilla options. In order to ensure that complex derivative pricing and hedging requirements are jointly addressed, the study extends the performance analysis of calibration methods from a static level of goodness-of-fit with market prices test, to a dynamic level of approximation to next period's LIBOR (London Interbank Offer Rate) dynamics when tested on a series of market prices. …

Albert Rex Bergstrom: 1925-2005, Peter C. B. Phillips

Research Collection School Of Economics

No abstract provided.

The Singapore Model Of Housing And The Welfare State, Sock Yong Phang

Research Collection School Of Economics

While Singapore is not generally regarded as a welfare state, the provision of housing welfare on a large scale has been a defining feature of its welfare system. The extensive housing system has played a useful role in raising savings and homeownership rates as well as contributing to sustained economic growth in general and development of the housing sector in particular. Few would dispute the description of Singapore’s housing policies as 'phenomenally successful' (Ramesh, 2003). Singapore’s economic growth record in the past four decades has brought it from third world to first world status (Lee, 2000), with homeownership widespread at …

Phishing With A Poisoned Bait, Warren B. Chik

Research Collection Yong Pung How School Of Law

This article discusses the problem of dealing with electronic fraud and identity theft under the current Singapore criminal law.

Mate Preference Necessities In Long- And Short-Term Mating: People Prioritize In Themselves What Their Mates Prioritize In Them, Norman P. Li

Research Collection School of Social Sciences

People were given highly constrained low budgets of mate dollars to allocate across various characteristics pertaining to their ideal partners and to their ideal selves for long- and short-term mating. First, results replicated findings from LI et al. (2002) and LI and KENRICK (2006). For ideal long-term mates, men prioritized physical attractiveness and women prioritized social status. For ideal short-term mates, both sexes prioritized physical attractiveness. Second, people's design of their ideal selves mirrored what the opposite sex ideally desired in their mates. For a long-term mating context, men prioritized social status in themselves and women prioritized physical attractiveness in …

Creativity Across Cultures, Kirpal Singh

Research Collection School of Social Sciences

No abstract provided.

National Culture And Its Effects On Knowledge Communication In Online Virtual Communities, Keng Siau, Fiona Fui-Hoon Nah, Min Ling

Research Collection School Of Computing and Information Systems

Online virtual communities provide a powerful means of knowledge sharing. Despite the prevalence of online virtual communities, there is a paucity of research to investigate the effect of national culture differences on knowledge sharing in online virtual communities. Are there differences between online virtual communities from different national cultures? This research studies the differences in knowledge-sharing activities between US-based and China-based online virtual communities. Hofstede's dimensions of national culture serve as the theoretical foundation for this research.

An Improvement Heuristic For The Timetabling Problem, Aldy Gunawan, Kien Ming Ng, Kim Leng Poh

Research Collection School Of Computing and Information Systems

This paper formulates a timetabling problem, which is often encountered in a university, as a mathematical programming model. The proposed model combines both teacher assignment and course scheduling problems simultaneously, which causes the entire model to become more complex. We propose an improvement heuristic algorithm to solve such a model. The proposed algorithm has been tested with several randomly generated datasets of sizes that are comparable to those occurring in a university in Indonesia. The computational results show that the improvement heuristic is not only able to obtain good solutions, but is also able to do so within reasonable computational …

Anticipatory Event Detection Via Classification, He Qi, Kuiyu Chang, Ee Peng Lim

Research Collection School Of Computing and Information Systems

The idea of event detection is to identify interesting patterns from a constant stream of incoming news documents. Previous research in event detection has largely focused on identifying the first event or tracking subsequent events belonging to a set of pre-assigned topics such as earthquakes, airline disasters, etc. In this paper, we describe a new problem, called anticipatory event detection (AED), which aims to detect if a user-specified event has transpired. AED can be viewed as a personalized combination of event tracking and new event detection. We propose using sentence-level and document-level classification approaches to solve the AED problem for …

The Puzzle Of Insular Domains: A Longitudinal Study Of Knowledge Structuration And Innovation In Biotechnology Firms, Gerald George, Reddi Kotha, Yanfeng Zheng

Research Collection Lee Kong Chian School Of Business

In this study we explain the puzzle of insular domains: insular domains are niches where new innovation is built on the knowledge within the domain. Given the nature of knowledge needed for new innovation in an insular domain the puzzle is why do new firms enter these niches? In a longitudinal sample of 128 biotechnology start-ups founded from 1980 to 1999 we explain why start-ups enter insular domains and how the start-ups develop technology capabilities.

The Legal Representation Of The Singaporean Home And The Influence Of The Common Law, Hang Wu Tang

Research Collection Yong Pung How School Of Law

The purpose of this article is to examine the principal laws that have a significant impact in shaping the meaning of the home in Singapore. This article makes two contributions to the pre-existing literature. First, the significant case law and statutes in Singapore affecting the concept of the home are collated and discussed. Second, in discussing these laws as a coherent whole, this article attempts to draw together the meaning of the home in the Singaporean context. The relevant laws are examined to determine whether the Western conception of “the home as a person's castle” is present in Singaporean law. …

Geography's Place In Higher Education In Singapore, Lily Kong

Research Collection School of Social Sciences

Unlike the other papers in this symposium, which deal with countries where there are large numbers of universities, and comparison can be made over time and across space of geography's place in higher education, this paper focuses on a country that was for a long time described as a 'one-university town': Singapore. What interesting story call there be when geography's presence in higher education is so circumscribed? In this paper, the author illustrates how geography's,fate in higher education in Singapore is closely bound up with developments in other parts of the world, not unlike the way in which the country's …

The Evolution Of The Disclosure Regime In Singapore, Wee Liang Tan

Research Collection Lee Kong Chian School Of Business

No abstract provided.

Dynamic Resource Allocation And Adaptability In Teamwork, Steve W. J. Kozlowski, Richard P. Deshon, Grace Park, Paul Curran, Goran Kuljanin, Brady Firth

Research Collection School of Social Sciences

Team performance and adaptability. A team is a set of two or more people who interact, dynamically, interdependently, and adaptively toward a common and valued goal, each having specific roles or functions to perform, and a limited life-span of membership (Salas, Dickinson, Converse, & Tannenbaum, 1992). We assume that all cognition originates within the individual. Therefore, to understand adaptive team processes it is important to understand the ways in which being a team member affects individual cognitive processes. We also assume that unique collective constructs and processes emerge at the team level from the dynamic interaction of team members that …

China's Participation In The Wto: A Lawyer's Perspective, Henry Gao

Research Collection Yong Pung How School Of Law

On 10 November 2001, China finally acceded to the World Trade Organization (WTO) after a marathon negotiation spanning 15 years. China's membership in the WTO raises interesting questions for both the WTO and China. For the WTO, the question is how to deal with China?a huge country of growing importance as a major global exporter and importer but is still in economic transition. For China, the question is how to implement the numerous obligations in the WTO accession package. This paper sets out by reviewing China's experience in the General Agreement on Tariffs and Trade (GATT) and the WTO. It …

Merleau-Ponty On Human Motility And Libet's Paradox, T. Brian Mooney, Damien Norris

Research Collection School of Social Sciences

In 1979, neuroscientists Libet, Wright, Feinstein and Pearl introduced the delay-and-antedating hypothesis/paradox based on the results of an on-going series of experiments dating back to 1964 that measured the neural adequacy [brain wave activity] of conscious sensory experience. What is fascinating about the results of this experiment is the implication, especially when considered in the light of Merleau-Ponty’s notions of intentionality and the pre-reflective life of human motility, that the body, and hence not solely the mind, is a thinking thing. The experiments and conclusions of Libet et al. have attracted considerable academic attention and have been used in the …

Relationships Between Daily Sexual Interactions And Domain-Specific And General Models Of Personality Traits., C. V. Smith, J. B. Nezlek, G. Webster, Elizabeth Layne Paddock

Research Collection Lee Kong Chian School Of Business

Although sexuality is an important component of personal relationships, there has been relatively little research on relationships between personality and everyday sexual behavior. Moreover, existing research on sexual behavior and personality (defined in terms of the Five-Factor Model, FFM) has found weak and inconsistent relationships. We hypothesized that sexual behavior can be better understood in terms of a model of personality that focuses on sexuality rather than in terms of a general model of personality. The present study examined relationships between two models of personality and daily sexual behavior. For 3 weeks, two different samples described their sexual interactions and …

Pnet For Dummies: An Introduction To Estimating Exponential Random Graph (P*) Models With Pnet, Nicholas Harrigan

Research Collection School of Social Sciences

PNet for Dummies is intended to walk the new user through one complete estimation in PNet. It is not a comprehensive guide to PNet. Currently the most comprehensive guide to PNet is the PNet Users Manual. PNet for Dummies exists to help get the new user started, helping them overcome the most common initial barriers, so that they can begin exploring and experimenting with PNet themselves.

Changing Transitions To Adulthood In Vietnam's Remote Northern Uplands: A Focus On Ethnic Minority Youth And Their Families, Bussarawan Teerawichitchainan, Hac Van Vinh, Nguyen Thi Phuong Lan

Research Collection School of Social Sciences

Vietnam’s rapid economic growth has provided young Vietnamese new opportunities unheard of in their parents’ generation. This is, however, not the case for ethnic minority youth. Many of them are among the poorest, least healthy, and least educated. Ethnic minorities, who tend to live in remote mountainous areas, account for 15 percent of Vietnam’s 84 million total population and, according to a recent estimate, 61 percent of them are poor. Evidence suggests that despite recent efforts of the Government of Vietnam in promoting poverty reduction in remote areas, a majority of ethnic minorities have not yet experienced positive change, contrary …

A New Variance Ratio Test Of Random Walk In Emerging Markets: A Revisit, O. Al-Khazali, David K. Ding, C.S. Pyun

Research Collection Lee Kong Chian School Of Business

Using a nonparametric variance ratio (VR) test, we revisit the empirical validity of the random walk hypothesis in eight emerging markets in the Middle East and North Africa (MENA). After correcting for measurement biases caused by thin and infrequent trading prevalent in nascent and small stock markets, we cannot reject the random walk hypothesis for the MENA markets. We conclude that a nonparametric VR test is appropriate for emerging stock markets, and argue that our findings can reconcile previously contradictory results regarding the efficiency of MENA markets. [ABSTRACT FROM AUTHOR]

Transborder Industrialization In The Framework Of Singapore's Regionalization Strategy: The Case Of Singapore's Gambit In Vietnam, Caroline Yeoh, Victor Sim, Wilfred Pow Ngee How

Research Collection Lee Kong Chian School Of Business

Infrastructure can be unreliable and administration subject to corruption in Asia’s rapidly emerging economies. This context presented Singapore with unique opportunities to export its expertise to locations where these attributes are less certain, through the provision of superior infrastructure, the ability to negotiate investment concessions and, where existing, through the links to influential business groups in the investment location. This strategic initiative is further premised on the perception that Singapore’s positive reputation with multinationals, as well as ‘guanxi’, or connections, with Asian business networks, will give the industrial-township projects a marketing advantage. Their progress is a litmus test of Singapore’s …

The Philosophy Of Special Relativity: A Comparison Between Indian And Western Interpretations, Manoj Thulasidas

Research Collection School Of Computing and Information Systems

The Western philosophical phenomenalism could be treated as a kind of philosophical basis of the special theory of relativity. The perceptual limitations of our senses hold the key to the understanding of relativistic postulates. The specialness of the speed of light in our phenomenal space and time is more a matter of our perceptual apparatus, than an input postulate to the special theory of relativity. The author believes that the parallels among the phenomenological, Western spiritual and the Eastern Advaita interpretations of special relativity point to an exciting possibility of unifying the Eastern and Western schools of thought to some …

Value-At-Risk In It Services Contracts, Robert J. Kauffman, Ryan Sougstad

Research Collection School Of Computing and Information Systems

As information systems (IS) and technology solutions become increasingly service-driven, managers are faced with the task of choosing parameters such as service-levels, pricing, and contract duration. Information technology (IT) services vendors manage portfolios of contracts in which parameters, decided at inception, are often subject to future risks. The contract profit maximization decision may adversely affect the risk position of the firm's portfolio of services contracts. We propose a model to inform vendors on setting optimal parameters for IS contracts subject to acceptable levels of risk. The analytic model presented draws from IS economics research and the principles of value-at-risk (VaR) …

Businessfinder: Harnessing Presence To Enable Live Yellow Pages For Small, Medium And Micro Mobile Businesses, D. Chakraborty, K. Dasgupta, S. Mittal, Archan Misra, C. Oberle, A. Gupta, E. Newmark

Research Collection School Of Computing and Information Systems

Applications leveraging network presence in next-generation cellular networks have so far focused on subscription queries, where "presence" information is extracted from specific devices and sent to entities who have subscribed to such presence information. In this article we present BusinessFinder, a service that leverages the underlying cellular presence substrate to provide efficient, on-demand, context-aware matching of customer requests to nomadic micro businesses as well as small and medium businesses having a mobile workforce. Presence, in the context of BusinessFinder, is not simply limited to phone location and device status, but also encompasses dynamic attributes of vendors (both "mobile" and "static"), …