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Evaluating The Use Of A Mobile Annotation System For Geography Education, Dion Hoe-Lian Goh, Khasfariyati Razikin, Chei Sian Lee, Ee Peng Lim, Kalyani Chatterjea, Chew-Hung Chang Jan 2012

Evaluating The Use Of A Mobile Annotation System For Geography Education, Dion Hoe-Lian Goh, Khasfariyati Razikin, Chei Sian Lee, Ee Peng Lim, Kalyani Chatterjea, Chew-Hung Chang

Research Collection School Of Computing and Information Systems

Mobile devices used in educational settings are usually employed within a collaborative learning activity in which learning takes place in the form of social interactions between team members while performing a shared task. The authors aim to introduce MobiTOP (Mobile Tagging of Objects and People), a mobile annotation system that allows users to contribute and share geospatial multimedia annotations via mobile devices. Field observations and interviews were conducted. A group of trainee teachers involved in a geography field study were instructed to identify rock formations by collaborating with each other using the MobiTOP system. The trainee teachers who were in …


A Survey On Privacy Frameworks For Rfid Authentication, Chunhua Su, Yingjiu Li, Yunlei Zhao, Robert H. Deng, Yiming Zhao, Jianying Zhou Jan 2012

A Survey On Privacy Frameworks For Rfid Authentication, Chunhua Su, Yingjiu Li, Yunlei Zhao, Robert H. Deng, Yiming Zhao, Jianying Zhou

Research Collection School Of Computing and Information Systems

Due to rapid growth of RFID system applications, the security and privacy problems become more and more important to guarantee the validity of RFID systems. Without introducing proper privacy protection mechanisms, widespread deployment of RFID could raise privacy concerns to both companies and individuals. As a fundamental issue for the design and analysis of secure RFID systems, some formal RFID privacy frameworks were proposed in recent years to give the principles for evaluating the security and privacy in RFID system. However, readers can be confused with so many proposed frameworks. In this paper, we make a comparative and survey study …


Content Contribution In Social Media: The Case Of Youtube, Qian Tang, Bin Gu, Andrew B. Whinston Jan 2012

Content Contribution In Social Media: The Case Of Youtube, Qian Tang, Bin Gu, Andrew B. Whinston

Research Collection School Of Computing and Information Systems

Social media allows individuals and businesses to contribute contents for public viewing. However, little is known about the underlying incentives that why content providers derive utilities from such activities. In this study, we build a dynamic structural model to recover the utility function for content providers. Our model distinguishes short-term payoffs based on ad revenue sharing from long-term payoffs driven by content providers' reputation. The model was estimated using a panel data of 914 top 1000 video providers on You Tube from Jun 7th, 2010, to Aug 7th, 2011 since top providers are more likely to be encouraged by these …


Online Consumer Complaint Behaviors: The Dynamics Of Service Failures, Consumers' Word Of Mouth, And Organization-Consumer Relationships, Seung B. Bach, Soojin Kim Jan 2012

Online Consumer Complaint Behaviors: The Dynamics Of Service Failures, Consumers' Word Of Mouth, And Organization-Consumer Relationships, Seung B. Bach, Soojin Kim

Research Collection Lee Kong Chian School Of Business

This study aims to provide an understanding of the relationships between consumer's negative word of mouth (WOM) and organizations' rectification behaviors. We see consumers' negative WOM as a process of problem solving when consumers encounter an organization's service failure that dissatisfies them. This study suggests a strategic management of public relations as a principle for consumer complaint management. Based on case studies, this study finds that negative WOM is formed by the dynamics of experience sharing, advice giving, agreement, and disagreement. In particular, we discovered that information sharing is predominant among negative WOM behaviors. Finally, the case study reveals that …


What Are Analysts Really Good At?, Ohad Kadan, Leonardo Madureira, Rong Wang, Tzachi. Zach Jan 2012

What Are Analysts Really Good At?, Ohad Kadan, Leonardo Madureira, Rong Wang, Tzachi. Zach

Research Collection Lee Kong Chian School Of Business

Sell-side analysts employ different benchmarks when defining their stock recommendations. Forexample, a ‘buy’ for some brokers means the stock is expected to outperform its peers in the same sector(“industry benchmarkers”), while for other brokers it means the stock is expected to outperform themarket (“market benchmarkers”), or just some absolute return (“total benchmarkers”). We use thesebenchmarks to analyze the role of stock picking, industry picking and market timing in contributing to theperformance of stock recommendations. We are able to do so given that different benchmarks suggest theuse of different sets of abilities. Analysis of the relation between analysts’ recommendations and theirlong-term …


Core Debates In Assessment Center Research: Dimensions ‘Versus’ Tasks, Neil D. Christiansen, Filip Lievens Jan 2012

Core Debates In Assessment Center Research: Dimensions ‘Versus’ Tasks, Neil D. Christiansen, Filip Lievens

Research Collection Lee Kong Chian School Of Business

Although personality constructs are now widely accepted as being important for understanding work behavior, self-report personality tests as a method of assessment are not without their critics (e.g., Morgeson et al., 2007). Whether misguided or not, concerns persist regarding the validity of these measures and the issue of applicant faking has yet to be fully resolved (Tett & Christiansen, 2007). Moreover, applicant reactions tend to be less favorable for personality inventories than many other assessments commonly used in employment settings (Hausknecht, Day, & Thomas, 2004). To some, self-report inventories may be a poor way to assess personality traits, and yet …


Repairing Trust With Individuals Vs. Groups, Peter H. Kim, Cecily D. Cooper, Kurt T. Dirks, Donald L. Ferrin Jan 2012

Repairing Trust With Individuals Vs. Groups, Peter H. Kim, Cecily D. Cooper, Kurt T. Dirks, Donald L. Ferrin

Research Collection Lee Kong Chian School Of Business

This study incorporates insights from research on group decision-making and trust repair to investigate the differences that arise when alleged transgressors attempt to regain the trust of groups as compared to individuals. Results indicate that repairing trust is generally more difficult with groups than individuals, and both groups and individuals were less trusting when trustees denied culpability (rather than apologized) for a competence-based violation or apologized (rather than denied culpability) for an integrity-based violation. However, the interaction of violation-type and violation-response also ultimately affected the relative difficulty of repairing trust with groups vs. individuals, with the greater harshness of groups …


A New Efficient Optimistic Fair Exchange Protocol Without Random Oracles, Qiong Huang, Guomin Yang, Duncan S. Wong, Willy Susilo Jan 2012

A New Efficient Optimistic Fair Exchange Protocol Without Random Oracles, Qiong Huang, Guomin Yang, Duncan S. Wong, Willy Susilo

Research Collection School Of Computing and Information Systems

Optimistic fair exchange (OFE) is a kind of protocols to solve the problem of fair exchange between two parties. Most of the previous work on this topic are provably secure in the random oracle model. In this work, we propose a new construction of OFE from another cryptographic primitive, called time capsule signature. The construction is efficient and brings almost no overhead other than the primitive itself. The security of our new construction is based on that of the underlying primitive without relying on the random oracle heuristic. Applying our generic construction to the time capsule signature scheme recently proposed …


The Impact Of University Patenting On Mobility Of Scientists, Xi Ye Jan 2012

The Impact Of University Patenting On Mobility Of Scientists, Xi Ye

Dissertations and Theses Collection (Open Access)

After the passage of Bayh-Dole Act, universities have been actively involved in patenting. At the same time, the booming of university patenting has brought up huge controversies and debates in academia. A large body of literature is devoted, from a broad macro-level view, to investigate the impact of intellectual property rights (IPR) on the research activities of universities. However, very few empirical studies have been conducted to study the impact of university patenting on the mobility of individuals who have been granted these patents. This study, aiming to provide a different insight to the extant literature, employs data from U.S. …


Are You My Mentor? Informal Mentoring Mutual Identification, Elizabeth T. Welsh, Devasheesh P. Bhave, Kyoung Yong Kim Jan 2012

Are You My Mentor? Informal Mentoring Mutual Identification, Elizabeth T. Welsh, Devasheesh P. Bhave, Kyoung Yong Kim

Research Collection Lee Kong Chian School Of Business

The purpose of this study is to understand the extent to which potential mentors and protégés agree that an informal mentoring relationship exists. Because these relationships are generally tacitly understood, either the mentor or protégé could perceive that there is a mentoring relationship when the other person does not agree. Whether gender affects this is also to be examined. Individuals were asked to identify their mentoring partners. Each report of a partner was then compared to the partner's list to determine whether there was a match (i.e. both reported the relationship as an informal mentoring relationship) or a mismatch (i.e. …


Why Open Borders, Chandran Kukathas Jan 2012

Why Open Borders, Chandran Kukathas

Research Collection School of Social Sciences

The present contribution offers a defence of open borders. It presents a critique of the idea that the state has a justified claim to regulate themovement of people because they reflect the collective endeavours of the members of the state to pursue a shared project of self-rule or self-determination. Itargues that this view rests on an indefensible understanding of the nature of thestate, which should be viewed less as a collective endeavour than as a productof conflicts among political elites. There is a strong prima facie case for freemovement that suggests there should be a presumption in favour of open …


Prevented Or Missed Chinese-Indochinese Encounters During Wwi: Spatial Imperial Policing In Metropolitan France, Tobias Frederik Rettig Jan 2012

Prevented Or Missed Chinese-Indochinese Encounters During Wwi: Spatial Imperial Policing In Metropolitan France, Tobias Frederik Rettig

Research Collection School of Social Sciences

No abstract provided.


Mutual Fund Size, Fund Family Size And Mutual Fund Performance: The Role Of Regulatory Changes, Sanjeev Bhojra, Young Jun Cho, Nir Yehuda Jan 2012

Mutual Fund Size, Fund Family Size And Mutual Fund Performance: The Role Of Regulatory Changes, Sanjeev Bhojra, Young Jun Cho, Nir Yehuda

Research Collection School Of Accountancy

We examine whether the previously documented positive association between fund family size and fund performance is affected by significant regulatory changes (i.e., Regulation Fair Disclosure (Reg FD), the Global Settlement (GS), and increased scrutiny as a result of trading scandals) that have occurred in the last decade. Using Reg FD as a beginning point for these structural changes, we find that, while fund family size was positively associated with fund performance in the period prior to the regulatory changes, this advantage is significantly weaker in the period subsequent to the regulatory changes. Consistent with the weakened advantage of fund family …


Structural Analysis In Multi-Relational Social Networks, Bingtian Dai, Freddy Chua, Ee Peng Lim Jan 2012

Structural Analysis In Multi-Relational Social Networks, Bingtian Dai, Freddy Chua, Ee Peng Lim

Research Collection School Of Computing and Information Systems

Modern social networks often consist of multiple relations among individuals. Understanding the structure of such multi-relational network is essential. In sociology, one way of structural analysis is to identify different positions and roles using blockmodels. In this paper, we generalize stochastic blockmodels to Generalized Stochastic Blockmodels (GSBM) for performing positional and role analysis on multi-relational networks. Our GSBM generalizes many different kinds of Multivariate Probability Distribution Function (MVPDF) to model different kinds of multirelational networks. In particular, we propose to use multivariate Poisson distribution for multi-relational social networks.


Forecasting Inflation In Asian Economies, Freddy Chian Fatt Liew Jan 2012

Forecasting Inflation In Asian Economies, Freddy Chian Fatt Liew

Dissertations and Theses Collection (Open Access)

This paper surveys the recent literature on inflation forecasting and conducts an extensive empirical analysis on forecasting inflation in Singapore, Japan, South Korea and Hong Kong paying particular attention to whether the inflation-markup theory can help to forecast inflation. We first review the relative performance of different predictors in forecasting h-quarter ahead inflation using single equations. These models include the autoregressive model and bivariate Philips curve models. The predictors are selected from business activity, financial activity, trade activity, labour market, interest rate market, money market, exchange rate market and global commodity market variables. We then evaluate a vector autoregressive inflation-markup …


Robust Execution Strategy For Scheduling Under Uncertainity, Na Fu Jan 2012

Robust Execution Strategy For Scheduling Under Uncertainity, Na Fu

Dissertations and Theses Collection (Open Access)

Resource Constrained Project Scheduling Problems with minimum and maximum time lags (RCPSP/max) provides a general model for resource scheduling in many real-world problems (such as manufacturing and construction engineering). Due to its practical importance and generality, providing effective algorithms and scalable solutions for RCPSP/max is a topic of growing research. Traditional methods have addressed deterministic models with all parameters known with certainty. In this thesis, we are concerned with RCPSP/max problems in an uncertain environment where durations of activities are stochastic and resource availabilities are subject to unforeseen breakdowns. We propose methods for generating robust execution strategy to protect against …


Novel Techniques Of Using Diversity In Software Security And Information Hiding, Jin Han Jan 2012

Novel Techniques Of Using Diversity In Software Security And Information Hiding, Jin Han

Dissertations and Theses Collection (Open Access)

Diversity is an important and valuable concept that has been adopted in many fields to reduce correlated risks and to increase survivability. In information security, diversity also helps to increase both defense capability and fault tolerance for information systems and communication networks, where diversity can be adopted from many different perspectives. This dissertation, in particular, focuses mainly on two aspects of diversity – the application software diversity and the diversity in data interpretation. Software diversity has many advantages over mono-culture in improving system security. A number of previous researches focused on utilizing existing off-theshelf diverse software for network protection and …


Testing Overreaction And Under-Reaction In The Commodity Futures Market, Jingyu Dai Jan 2012

Testing Overreaction And Under-Reaction In The Commodity Futures Market, Jingyu Dai

Dissertations and Theses Collection (Open Access)

Results from previous studies testing for under-reaction and overreaction in the commodity futures market are mixed and inconclusive. Using a data of more than 20 categories of future contacts ranging from agricultural, metal and energy, we have found significant evidence of under-reaction in food and agricultural commodities but not in the energy and metal sector. It is also found that those relatively inactive commodity future contracts tend to have a stronger tendency to under-react than commodity future contracts are very actively traded. The result also agrees with the behavioral hypothesis that under-reaction is caused by gradual incorporation of information among …


Supply Elasticity Of Housing, Kyunghwan Kim, Sock-Yong Phang, Susan Wachter Jan 2012

Supply Elasticity Of Housing, Kyunghwan Kim, Sock-Yong Phang, Susan Wachter

Research Collection School Of Economics

The supply elasticity of housing determines how quickly house prices respond to economic shocks and this has many real economic consequences. Malpezzi and Maclennan (2001) describes its importance in housing market analysis: „most housing models, and most policy analysis hinge on explicit or implicit estimates of the price elasticity of supply of housing: does the market respond to demand side shocks with more supply or higher prices‟. However, as pointed out by Quigley (1979), there exist real analytical difficulties in modeling the supply of housing. Attempting to measure the flow of housing services provided by the stock of housing is …


Folklore Theorems, Implicit Maps, And Indirect Inference, Peter C. B. Phillips Jan 2012

Folklore Theorems, Implicit Maps, And Indirect Inference, Peter C. B. Phillips

Research Collection School Of Economics

The delta method and continuous mapping theorem are among the most extensively used tools in asymptotic derivations in econometrics. Extensions of these methods are provided for sequences of functions that are commonly encountered in applications and where the usual methods sometimes fail. Important examples of failure arise in the use of simulation-based estimation methods such as indirect inference. The paper explores the application of these methods to the indirect inference estimator (IIE) in first order autoregressive estimation. The IIE uses a binding function that is sample size dependent. Its limit theory relies on a sequence-based delta method in the stationary …


Information Extraction From Text, Jing Jiang Jan 2012

Information Extraction From Text, Jing Jiang

Research Collection School Of Computing and Information Systems

Information extraction is the task of finding structured information from unstructured or semi-structured text. It is an important task in text mining and has been extensively studied in various research communities including natural language processing, information retrieval and Web mining. It has a wide range of applications in domains such as biomedical literature mining and business intelligence. Two fundamental tasks of information extraction are named entity recognition and relation extraction. The former refers to finding names of entities such as people, organizations and locations. The latter refers to finding the semantic relations such as FounderOf and HeadquarteredIn between entities. In …


A Spatial Analysis Of The Italian Second Republic, Second Version, Massimiliano Landi, Ricardo Pelizzo Jan 2012

A Spatial Analysis Of The Italian Second Republic, Second Version, Massimiliano Landi, Ricardo Pelizzo

Research Collection School Of Economics

We apply the Optimal Classification method to a newly created dataset to provide a spatial map of the Italian Second Republic (1996-2008). We find a bi-dimensional political space in the XIII Legislature and virtually a one dimensional political space in the XIV and XV Legislatures. In addition, the main dimension is explained along the dimension government opposition rather than on the traditional left and right dimension. During the Second Republic, Italy experienced changes in electoral system and in the format of the parties. We use our data to discuss the implications of either change on the dimensionality space. We find …


Conditional Independence Specification Testing For Dependent Processes With Local Polynomial Quantile Regression, Liangjun Su, Halbert L. White Jan 2012

Conditional Independence Specification Testing For Dependent Processes With Local Polynomial Quantile Regression, Liangjun Su, Halbert L. White

Research Collection School Of Economics

We provide straightforward new nonparametric methods for testing conditional independence using local polynomial quantile regression, allowing weakly dependent data. Inspired by Hausman's (1978) specification testing ideas, our methods essentially compare two collections of estimators that converge to the same limits under correct specification (conditional independence) and that diverge under the alternative. To establish the properties of our estimators, we generalize the existing nonparametric quantile literature not only by allowing for dependent heterogeneous data but also by establishing a weak consistency rate for the local Bahadur representation that is uniform in both the conditioning variables and the quantile index. We also …


Securing Natural Justice In Arbitration Proceedings, Austin Ignatius Pulle Jan 2012

Securing Natural Justice In Arbitration Proceedings, Austin Ignatius Pulle

Research Collection Yong Pung How School Of Law

The legitimacy and integrity of any system that adjudicates the rights and duties ofpersons would be evaluated by reference to the standards required by the principles of natural justice. Arbitration is becoming more popular as a system of dispute resolution because of the exponential increase of cross-border transactions that are a feature of globalization. Now arbitrations take place in countries that lack a well-developed arbitration culture. Courts in some of these countries have yet to develop a coherent body of law that clarifies and gives effect to the principles of natural justice. Moreover, important values protected by natural justice principles …


Possession And Knowledge In The Misuse Of Drugs Act: Nagaenthran A/L K Dharmalingam V. Public Prosecutor, Siyuan Chen, Nathaniel Poon-Ern Khng Jan 2012

Possession And Knowledge In The Misuse Of Drugs Act: Nagaenthran A/L K Dharmalingam V. Public Prosecutor, Siyuan Chen, Nathaniel Poon-Ern Khng

Research Collection Yong Pung How School Of Law

When the Court of Appeal rendered the decision of Tan Kiam Peng in 2008, it was unable to come to a conclusive determination of the correct interpretation of s. 18(2) of the Misuse of Drugs Act, a provision pertaining to the presumption of an accused’s knowledge of the nature of the controlled drugs in his possession. This issue was presented to a differently constituted Court of Appeal in Nagaenthran, which seemingly ruled in favour of the narrow interpretation of s. 18(2) as opposed to the broader interpretation. Nagaenthran, however, did not address the questions raised by Tan Kiam Peng vis-à-vis …


Advanced Fundamentals Of Appellate Advocacy In A Moot Court, Siyuan Chen Jan 2012

Advanced Fundamentals Of Appellate Advocacy In A Moot Court, Siyuan Chen

Research Collection Yong Pung How School Of Law

This article discusses some of the more advanced techniques and “tricks” in mooting and is meant primarily for students who are aiming to compete in moot court competitions for the first time. It builds upon the basic fundamentals that would have been taught in a Legal Writing course, and covers the four key components of a moot: the opening, the arguments, the answering of questions, and the conclusion/ rebuttals.


The Resurgence Of Uncorporation: The Business Trust In Singapore, Hang Wu Tang Jan 2012

The Resurgence Of Uncorporation: The Business Trust In Singapore, Hang Wu Tang

Research Collection Yong Pung How School Of Law

The business trust has enjoyed resurgence in Singapore following the enactment of the Business Trusts Act. In March 2011, a high profile initial public offering in Singapore involving a business trust raised a staggering US $5.5 billion making this one of the world’s largest initial public offering of the year. Further, Hong Kong telecommunication company, PCCW Ltd has also offered a business trust via a stapled security structure in November 2011. Yet the business trust is not widely understood by many lawyers. Thus, one of the aims of this paper is to provide a description of the business trust as …


Japan’S Love For Derivative Actions: Irrational Behaviour And Non-Economic Motives As Rational Explanations For Shareholder Litigation, Dan W. Puchniak, Masafumi Nakahigashi Jan 2012

Japan’S Love For Derivative Actions: Irrational Behaviour And Non-Economic Motives As Rational Explanations For Shareholder Litigation, Dan W. Puchniak, Masafumi Nakahigashi

Research Collection Yong Pung How School Of Law

Not long ago, there was a consensus in the legal academy that the Japanese were irrational litigants. As the theory went, Japanese people would forgo litigating for financial gain because of a cultural obsession with maintaining social harmony. Based on this theory, it made perfect (but economically irrational) sense that Japanese shareholders let their U.S.-transplanted derivative action lay moribund for almost four post-war decades, while at the same time the derivative action was a staple of shareholder litigation in the United States.The 1980s brought a wave of law and economics to the scholarship of Japanese law, which largely discredited the …


A Sentiment Analysis Of Singapore Presidential Election 2011 Using Twitter Data With Census Correction, Murphy Junyu Choy, Michelle Lee Fong Cheong, Nang Laik Ma, Ping Shung Koo Jan 2012

A Sentiment Analysis Of Singapore Presidential Election 2011 Using Twitter Data With Census Correction, Murphy Junyu Choy, Michelle Lee Fong Cheong, Nang Laik Ma, Ping Shung Koo

Research Collection School Of Computing and Information Systems

Sentiment analysis is a new area in text analytics where it focuses on the analysis and understanding of the human emotions from the text patterns. This new form of analysis has been widely adopted in customer relationship management especially in the context of complaint management. However, sentiment analysis using Twitter data has remained extremely difficult to manage due to sampling biasness. In this paper, we will discuss about the application of reweighting techniques in conjunction with online sentiment divisions to predict the vote percentage that individual presidential candidate in Singapore will receive in the Presidential Election 2011. There will be …


Agency And Partnership Law [2011], Pearlie M. C. Koh, Stephen Noel Henry Bull Jan 2012

Agency And Partnership Law [2011], Pearlie M. C. Koh, Stephen Noel Henry Bull

Research Collection Yong Pung How School Of Law

The laws relating to the creation of an agency, implied authority, holding out and apparent authority, duties of the agent in relation to Agency law are discussed. The laws relating to partnership law and issues such as relationship of partners to third parties, relationships of partners between themselves and capacity to be a partner are highlighted.