Digital Commons Network^™

The Debate Inside China, William A. Callahan

Research Collection School of Social Sciences

In his recent work Gilbert Rozman explains the growing tensions between the People’s Republic of China (PRC) and United States in terms of the symbolic politics of a widening “identity gap.” This identity gap is important, he argues, because it pushes both countries towards more fundamentalist views of themselves and each other, which in turn fosters ideas of an “inevitable” zero-sum geopolitical conflict.

Inferring Ongoing Human Activities Based On Recurrent Self-Organizing Map Trajectory, Qianru Sun, Hong Liu

Research Collection School Of Computing and Information Systems

Automatically inferring ongoing activities is to enable the early recognition of unfinished activities, which is quite meaningful for applications, such as online human-machine interaction and security monitoring. State-of-the-art methods use the spatiotemporal interest point (STIP) based features as the low-level video description to handle complex scenes. While the existing problem is that typical bag-of-visual words (BoVW) focuses on the statistical distribution of features but ignores the inherent contexts in activity sequences, resulting in low discrimination when directly dealing with limited observations. To solve this problem, the Recurrent Self-Organizing Map (RSOM), which was designed to process sequential data, is novelly adopted …

Theory And Practice, Do They Match? A Case With Spectrum-Based Fault Localization, Tien-Duy B. Le, Ferdian Thung, David Lo

Research Collection School Of Computing and Information Systems

Spectrum-based fault localization refers to the process of identifying program units that are buggy from two sets of execution traces: normal traces and faulty traces. These approaches use statistical formulas to measure the suspiciousness of program units based on the execution traces. There have been many spectrum-based fault localization approaches proposing various formulas in the literature. Two of the best performing and well-known ones are Tarantula and Ochiai. Recently, Xie et al. find that theoretically, under certain assumptions, two families of spectrum-based fault localization formulas outperform all other formulas including those of Tarantula and Ochiai. In this work, we empirically …

Satisfaction Pursuing Approach And Avoidance Goals: Effects Of Regulatory Fit And Individual Temperaments, Guihyun Grace Park, Linn Van Dyne, Daniel R. Ilgen

Research Collection School of Social Sciences

Going beyond previous studies on satisfaction in pursuing approach versus avoidance goals, the current study is the first to examine individual satisfaction in pursuing approach and avoidance goals as determined by regulatory fit between type of goal and type of strategy. Specifically, the present study shows that people with approach goals have greater satisfaction when they use an approach strategy rather than an avoidance strategy. People with avoidance goals have greater satisfaction when they use an avoidance strategy rather than an approach strategy. In addition, we explored how individual differences in the Behavioral Activation System and the Behavioral Inhibition System …

Moore’S Paradox And The Priority Of Belief Thesis, John N. Williams

Research Collection School of Social Sciences

Moore’s paradox is the fact that assertions or beliefs such as Bangkok is the capital of Thailand but I do not believe that Bangkok is the capital of Thailand or Bangkok is the capital of Thailand but I believe that Bangkok is not the capital of Thailand are ‘absurd’ yet possibly true. The current orthodoxy is that an explanation of the absurdity should first start with belief, on the assumption that once the absurdity in belief has been explained then this will translate into an explanation of the absurdity in assertion. This assumption gives explanatory priority to belief over assertion. …

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

Research Collection School Of Economics

The Optimal Classification method is applied to a newly created data set to provide a spatial map of the Italian Second Republic (1996–2008). A bi-dimensional political space was found 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 government–opposition dimension rather than on the traditional left–right dimension. During the Second Republic, Italy experienced changes in the electoral system and in the format of parties. The data are used to discuss the implications of either change on the dimensionality space. It was found that the …

Heteroskedasticity And Non-Normality Robust Lm Tests Of Spatial Dependence, Badi H. Baltagi, Zhenlin Yang

Research Collection School Of Economics

The standard LM tests for spatial dependence in linear and panel regressions are derived under the normality and homoskedasticity assumptions of the regression disturbances. Hence, they may not be robust against non-normality or heteroskedasticity of the disturbances. Following Born and Breitung (2011), we introduce general methods to modify the standard LM tests so that they become robust against heteroskedasticity and non-normality. The idea behind the robustification is to decompose the concentrated score function into a sum of uncorrelated terms so that the outer product of gradient (OPG) can be used to estimate its variance. We also provide methods for improving …

Geographic Decomposition Of Inequality In Health And Wealth: Evidence From Cambodia, Tomoki Fujii

Research Collection School Of Economics

Applying the small-area estimation methods to Cambodia data, we decompose the total inequality in wealth (consumption) and health (child undernutrition) indicators into within-location and between-location components. Because the knowledge of the pattern of spatial disparity in poverty and undernutrition is important for the geographic targeting of resources, we conduct a geographic decomposition of the variance of the Foster-Greere-Thorbecke index in addition to the standard decomposition exercise based on the generalized entropy measures. We find that a sizable proportion of wealth inequality is due to between-location inequality, whereas health inequality is mainly due to within-location inequality.

Geographic Decomposition Of Inequality In Health And Wealth: Evidence From Cambodia, Tomoki Fujii

Research Collection School Of Economics

The small-area estimation developed by Elbers, Lanjouw and Lanjouw (2002, 2003), in which a census and a survey are combined to produce the estimates of welfare measures for small geographic areas, has become a standard tool for poverty analysis in developing countries. The small-area estimates are typically plotted on a map, which are commonly called a poverty map. Poverty maps proved useful for policy analysis and formulation, and have become increasingly popular among policy-makers and researchers. In Cambodia, poverty maps have been used by various international organizations, ministries and non-governmental organizations for analyzing the poverty situations for their operation areas, …

Discovering The Right To Criminal Disclosure: Lessons From Civil Procedure, Denise Huiwen Wong

Research Collection Yong Pung How School Of Law

The amendments to the Criminal Procedure Code (Cap 68, 1985 Rev Ed) and subsequent case law developments have created a patchwork of rules governing the disclosure obligations of parties in criminal cases. This article argues that parties have thereby been endowed with a right that is exercisable in the courts to access the material to which the law says they are entitled. However, there are currently no proper procedural mechanisms in place for parties to make interlocutory applications to obtain such material. This article examines the competing values and ideals of a criminal discovery regime, and suggests that concepts such …

Contractual Interpretation In Indian Evidence Act Jurisdictions: Compatibility With Modern Contextual Approach, Yihan Goh

Research Collection Yong Pung How School Of Law

This paper examines the approaches towards contractual interpretation taken by Commonwealth jurisdictions governed by the Indian Evidence Act. While some of these jurisdictions import the modern contextual approach into their domestic approaches, it will be argued that it is largely compatible with the Indian Evidence Act. In particular, it will be shown that a limited adoption of the modern contextual approach is permissible, namely one involving the limited admissibility of extrinsic evidence to interpret contracts, subject to the requirement of ambiguity. An integrated approach may represent the best way of following the modern contextual approach, while remaining faithful to the …

The Right To Appeal Against A Decision Made On An Interlocutory Application: The Immediate Aftermath Of The 2010 Amendments, Eunice Chua, Siyuan Chen

Research Collection Yong Pung How School Of Law

One of the main reasons for amending the Supreme Court of Judicature Act (Cap 322, 2007 Rev Ed) in 2010 was to introduce a calibrated approach towards interlocutory appeals to the Court of Appeal. The amended s 34 and the newly introduced Fourth and Fifth Scheds were interpreted for the first time in two recent Court of Appeal decisions, providing much needed guidance on the general approach towards statutory interpretation, as well as specific direction in terms of interpreting the term “order” in para (i) of the Fourth Sched and para (e) of the Fifth Sched, and the term “interlocutory …

The Future Of The Similar Fact Rule In An Indian Evidence Act Jurisdiction: Singapore, Siyuan Chen

Research Collection Yong Pung How School Of Law

In yet another attempt to bridge the gap between the rules of an antiquated statute and the modern realities of practice, Singapore’s Evidence Act was amended in 2012. Certain relevancy provisions were amended to allow greater admissibility of evidence. While new provisions were introduced to act as a check against abuse, oddly some similar fact provisions were left intact. This paper explains why the 2012 amendments have rendered the future of these enactments very uncertain. This paper also suggests a number of tentative recommendations as regards future legislative change or judicial interpretation. To the extent that Singapore’s Evidence Act was …

The Use Of Experts In Legal Proceedings In Singapore Involving Intellectual Property Rights, David Llewelyn

Research Collection Yong Pung How School Of Law

In intellectual property (IP) cases decided in recent years in Singapore, the use of expert evidence is commonplace. Weaknesses in that expert evidence are commonplace too; sometimes the weaknesses are such that the evidence should be excluded, on other occasions they render the evidence of little value. However, in all cases the reliance on expert evidence will have increased the cost of the litigation for both sides (and rarely does the costs award make that increase good for the successful party). Aside from the more general policy concerns regarding expert evidence, this is an important reason why the courts must …

Corporate Myths: Sourcing And Vendor Management In Asia Pacific, Patrick Thng

Research Collection School Of Computing and Information Systems

There exists many mistaken beliefs about Sourcing and Vendor Management. Consequently the function is often mismanaged resulting in errors and frauds. Equipping the function with the needed skills and knowledge is critical for competent management of this key function which every organisation has to have.

A Highly Efficient Rfid Distance Bounding Protocol Without Real-Time Prf Evaluation, Yunhui Zhuang, Anjia Yang, Duncan S. Wong, Guomin Yang, Qi Xie

Research Collection School Of Computing and Information Systems

There is a common situation among current distance bounding protocols in the literature: they set the fast bit exchange phase after a slow phase in which the nonces for both the reader and a tag are exchanged. The output computed in the slow phase is acting as the responses in the subsequent fast phase. Due to the calculation constrained RFID environment of being lightweight and efficient, it is the important objective of building the protocol which can have fewer number of message flows and less number of cryptographic operations in real time performed by the tag. In this paper, we …

Securearray: Improving Wifi Security With Fine-Grained Physical-Layer, Jie Xiong, Kyle Jamieson

Research Collection School Of Computing and Information Systems

Despite the important role that WiFi networks play in home and enterprise networks they are relatively weak from a security standpoint. With easily available directional antennas, attackers can be physically located off-site, yet compromise WiFi security protocols such as WEP, WPA, and even to some extent WPA2 through a range of exploits specific to those protocols, or simply by running dictionary and human-factors attacks on users' poorly-chosen passwords. This presents a security risk to the entire home or enterprise network. To mitigate this ongoing problem, we propose SecureArray, a system designed to operate alongside existing wireless security protocols, adding defense …

An Investigation Of Decision Analytic Methodologies For Stress Identification, Yong Deng, Chao-Hsien Chu, Huayou Si, Qixun Zhang, Zhonghai Wu

Research Collection School Of Computing and Information Systems

In modern society, more and more people are suffering from some type of stress. Monitoring and timely detecting of stress level will be very valuable for the person to take counter measures. In this paper, we investigate the use of decision analytics methodologies to detect stress. We present a new feature selection method based on the principal component analysis (PCA), compare three feature selection methods, and evaluate five information fusion methods for stress detection. A driving stress data set created by the MIT Media lab is used to evaluate the relative performance of these methods. Our study show that the …

Scholarbank@Nus: Bank Deposits That Grow Constantly, Building Knowledge For The Future, Kim Kee Toh, Stephanie Yen Ping Ng

2013 Institutional Repository Day

In response to the open access movement, National University of Singapore implemented ScholarBank@NUS, the institutional repository in April 2010. Investment in resources to collect, preserve and make NUS’ scholarly output accessible to the world is considerable but worthwhile. Our initial deposits were students’ electronic theses and dissertations (ETD). An interface was developed to automatically transfer the theses from the Registrar's Office's ETD system. From ETD, we moved on to staff publications, music recordings and patents. Harvesting of staff publications (mainly journal articles and conference papers) is a huge challenge. To harvest more than 50,000 staff publication metadata took longer than …

Writing For Publication In Biomedical Informatics Journals, Christoph Lehmann, Reinhold Haux, Jan Talmon, Dominik Aronsky, Nicolette De Keizer, Tze-Yun Leong, Charles Safran

Research Collection School Of Computing and Information Systems

No abstract provided.

Audit Games, Jeremiah Blocki, Nicolas Christin, Anupam Datta, Ariel D. Procaccia, Arunesh Sinha

Research Collection School Of Computing and Information Systems

Effective enforcement of laws and policies requires expending resources to prevent and detect offenders, as well as appropriate punishment schemes to deter violators. In particular, enforcement of privacy laws and policies in modern organizations that hold large volumes of personal information (e.g., hospitals, banks) relies heavily on internal audit mechanisms. We study economic considerations in the design of these mechanisms, focusing in particular on effective resource allocation and appropriate punishment schemes. We present an audit game model that is a natural generalization of a standard security game model for resource allocation with an additional punishment parameter. Computing the Stackelberg equilibrium …

Multi-View Discriminant Transfer Learning, Pei Yang Yang, Wei Gao

Research Collection School Of Computing and Information Systems

We study to incorporate multiple views of data in a perceptive transfer learning framework and propose a Multi-view Discriminant Transfer (MDT) learning approach for domain adaptation. The main idea is to find the optimal discriminant weight vectors for each view such that the correlation between the two-view projected data is maximized, while both the domain discrepancy and the view disagreement are minimized simultaneously. Furthermore, we analyze MDT theoretically from discriminant analysis perspective to explain the condition and reason, under which the proposed method is not applicable. The analytical results allow us to investigate whether there exist within-view and/or betweenview conflicts, …

Hougang By-Election Case: What Court Decision On By-Election Reveals, Jack Tsen-Ta Lee

Research Collection Yong Pung How School Of Law

The Singapore Court of Appeal’s judgment in Vellama d/o Marie Muthu v Attorney-General [2013] SGCA 39 – popularly known as the Hougang by-election case – shows that the Court sees its role as policing the margins rather than involving itself in the heart of politics. The Court held that the Government was incorrect in asserting the Constitution confers on it the discretion not to hold a by-election at all after a parliamentary seat falls vacant. The judgment came as a surprise to those used to a judicial stance fairly deferential towards the Government, but on balance the Court did accord …

Medical Tourism : A Serious Business, Singapore Management University

Perspectives@SMU

Significant changes in the globalisation of healthcare creates market with huge potential for growth

As the medical tourism movement grew in popularity over the past decade, Vishal Bali has had a front row seat watching the industry flourish in his role as the Group CEO of Fortis Healthcare Limited, a healthcare provider in the Asia Pacific region. From his vantage point, Bali notes, "There have been significant changes in the forces of globalisation of healthcare patients. The trend is maturing and geographies are shifting. Healthcare providers in different countries are taking strategic positions to compete for the global healthcare consumer …

Can Hedge Funds Time Liquidity?, Charles Cao, Yong Chen, Bing Liang, Andrew W. Lo

Research Collection BNP Paribas Hedge Fund Centre

We explore a new dimension of fund managers' timing ability by examining whether they can time market liquidity through adjusting their portfolios' market exposure as aggregate liquidity conditions change. Using a large sample of hedge funds, we find strong evidence of liquidity timing. A bootstrap analysis suggests that top-ranked liquidity timers cannot be attributed to pure luck. In out-of-sample tests, top liquidity timers outperform bottom timers by 4.0–5.5% annually on a risk-adjusted basis. We also find that it is important to distinguish liquidity timing from liquidity reaction, which primarily relies on public information. Our results are robust to alternative explanations, …

Inconsistent Var Regression With Common Explosive Roots, Peter C. B. Phillips, Tassos Magdalinos

Research Collection School Of Economics

Nielsen (Working paper, University of Oxford, 2009) shows that vector autoregression is inconsistent when there are common explosive roots with geometric multiplicity greater than unity. This paper discusses that result, provides a coexplosive system extension and an illustrative example that helps to explain the finding, gives a consistent instrumental variable procedure, and reports some simulations. Some exact limit distribution theory is derived and a useful new reverse martingale central limit theorem is proved.

Sustainable Business Models: The Contribution Of Network Organization And Governance Modes, Sudhi Seshadri, Michael Ehret

Research Collection Lee Kong Chian School Of Business

We provide a framework for the design of sustainable business models. While extant literature on business models focuses on unlocking positive externalities, we propose a business model framework that effectively addresses negative externalities. A taxonomy-based on transorganizational models and governance modes - classifies instruments that counsel behaviour patterns. Sustainability strategies that deal with externalities often merge instruments to manage multi-stakeholder responsibilities and exchanges. The framework draws upon three established research themes - network organizational models, governance modes, and instrumental stakeholder theory - to distinguish between six instrument classes. To illustrate its potential for analysis the paper compiles instruments within these …

Non-Audit Fees, Institutional Monitoring, And Audit Quality, Chee Yeow Lim, David K. Ding, Charlie Charoenwong

Research Collection School Of Accountancy

We posit that the effect of non-audit fees on audit quality is conditional on the extent of institutional monitoring. We suggest that institutional investors have incentives and the ability to monitor financial reporting quality. Because of the reputation concerns and potential litigation exposure, auditors are likely to provide high audit quality, when they also provide non-audit services to clients, particularly when clients are subject to high institutional monitoring. We find evidence that, as non-audit fees increase, audit quality (measured by performance-adjusted discretionary current accruals and earnings-response coefficients) reduces only for clients with low institutional ownership but not for clients with …

Visual Representation Of Accounting Standards, Pearl Hock Neo Tan, Chu Yeong Lim

Research Collection School Of Accountancy

No abstract provided.

Making Accounting Productive, Themin Suwardy

Research Collection School Of Accountancy

No abstract provided.