Social and Behavioral Sciences Commons^™

Differential Impact Of Directors’ Social And Financial Capital On Corporate Interlock Formation, Nicholas Harrigan, Matthew Bond

Research Collection School of Social Sciences

Exponential random graph models (ERGMs) are increasingly applied to observed network data and are central to understanding social structure and network processes. The chapters in this edited volume provide a self-contained, exhaustive account of the theoretical and methodological underpinnings of ERGMs, including models for univariate, multivariate, bipartite, longitudinal and social-influence type ERGMs. Each method is applied in individual case studies illustrating how social science theories may be examined empirically using ERGMs. The authors supply the reader with sufficient detail to specify ERGMs, fit them to data with any of the available software packages and interpret the results.

A Mechanism For Organizing Last-Mile Service Using Non-Dedicated Fleet, Shih-Fen Cheng, Duc Thien Nguyen, Hoong Chuin Lau

Research Collection School Of Computing and Information Systems

Unprecedented pace of urbanization and rising income levels have fueled the growth of car ownership in almost all newly formed megacities. Such growth has congested the limited road space and significantly affected the quality of life in these megacities. Convincing residents to give up their cars and use public transport is the most effective way in reducing congestion; however, even with sufficient public transport capacity, the lack of last-mile (from the transport hub to the destination) travel services is the major deterrent for the adoption of public transport. Due to the dynamic nature of such travel demands, fixed-size fleets will …

South Africa’S First Five Years On The United Nations Human Rights Council, Eduard Christiaan Jordaan

Research Collection School of Social Sciences

In June 2011, the United Nations Human Rights Council (HRC) adopted its first resolution on sexual orientation and human rights. Resolution 17/19 expressed grave concern at violence and discrimination committed against people because of their sexual orientation and tasked the UN High Commissioner for Human Rights to report on such abuses. In a body marred by regional bloc voting, Resolution 17/19 passed with support from states in all five of the official regions of the UN. South Africa was widely praised for leading such a progressive resolution through the Council, especially in the face of considerable pressure from African and …

Grandparents As Guards: A Game Theoretic Analysis Of Inheritance And Post Marital Residence In A World Of Uncertain Paternity, Brishti Guha

Research Collection School Of Economics

I unify the following (1) men face paternal uncertainty while women do not face maternal uncertainty, (2) putative fathers and paternal kin care about true paternity, (3) paternity confidence is systematically lower in matrilocal cultures than in patrilocal ones, (4) inheritance tends to be patrilineal in high paternity confidence cultures and matrilineal in low confidence ones, and (5) most societies with patrilineal inheritance were patrilocal while most societies with matrilineal inheritance were matrilocal. I model the co-evolution of inheritance patterns and post-marital residence patterns - and their relationship with paternity uncertainty. Using a game theoretic model, I examine how a …

Taking Crime Out Of Crime Business, Mark James Findlay, Nafis Hanif

Research Collection Yong Pung How School Of Law

It is one thing to assert that conventional market analysis is critically useful in understanding criminal enterprise. It is more challenging to suggest that corrupt and compromised legal regulation interacts with other critical market variables to maximise market advantage for crime business in a similar manner to legitimate regulatory forces in their protection and enhancement of legitimate business enterprise. The central argument of this paper is that crime business mirrors other business forms when considered in terms of critical market variables, and that in particular regulatory forces when inverted from their original purposes can influence market conditions in the same …

Honesty And Intermediation: Corporate Cheating, Auditor Involvement And The Implications For Takeoff, Brishti Guha

Research Collection School Of Economics

We examine honesty and credible auditing in firm-investor relations in a repeated game of imperfect information, embedded in a general equilibrium framework. Informed auditors enhance credibility over a range of audit fees – despite the auditor’s incentive to collude – provided the probability of detection is imperfectly correlated across clients. Auditing can enhance growth especially for a relatively egalitarian distribution of wealth. We show that audit fees must be neither too high nor too low to enhance client credibility, highlight the role of mandatory audit fee disclosure, interpret international differences in shareholding patterns and uncover a possible rationale for audit …

Social And Adversarial Varieties Of Democracy: Which Produces Fewer Criminals?, Devin K. Joshi

Research Collection School of Social Sciences

This article explores the relationship between two prominent varieties of democracy and the size of a country’s prison population. Theoretically, it proposes that social democracies increase social and economic equality which reduces both the “demand for crime” and the number of criminals. Adversarial democracies, on the other hand, generate higher levels of inequality and insecurity that lead to higher levels of crime. Utilizing a structured, focused comparison of Nordic social democracies and Anglo-American adversarial democracies complemented by cross-sectional multiple regression analysis of twenty industrialized democracies, I find empirical support for both of these conjectures. A major implication of this study …

On Recommending Hashtags In Twitter Networks, Su Mon Kywe, Tuan-Anh Hoang, Ee Peng Lim, Feida Zhu

Research Collection School Of Computing and Information Systems

Twitter network is currently overwhelmed by massive amount of tweets generated by its users. To effectively organize and search tweets, users have to depend on appropriate hashtags inserted into tweets. We begin our research on hashtags by first analyzing a Twitter dataset generated by more than 150,000 Singapore users over a three-month period. Among several interesting findings about hashtag usage by this user community, we have found a consistent and significant use of new hashtags on a daily basis. This suggests that most hashtags have very short life span. We further propose a novel hashtag recommendation method based on collaborative …

Shall The Twain Never Meet? Competing Narratives And Discourses Of The Rule Of Law In Singapore, Jack Tsen-Ta Lee

Research Collection Yong Pung How School Of Law

This article aims to assess the role played by the rule of law in discourse by critics of the Singapore Government’s policies and in the Government’s responses to such criticisms. It argues that in the past the two narratives clashed over conceptions of the rule of law, but there is now evidence of convergence of thinking as regards the need to protect human rights, though not necessarily as to how the balance between rights and other public interests should be struck. The article also examines why the rule of law must be regarded as a constitutional doctrine in Singapore, the …

Money And Asset Prices With Uninsurable Risks, Nicolas L. Jacquet, Serene Tan

Research Collection School Of Economics

We develop a model where the coexistence of money and a higher yielding asset is endogenously obtained when no restriction is placed on the use of either object as a medium of exchange. Due to the presence of uninsurable risks, agents have, in equilibrium, di⁄erent relative valuations of the asset to money, and hence, the use of money as a means of payment is strictly preferred. This endogenous di⁄erence in the willingness of agents to use money over the asset implies that money carries a greater liquidity premium than the asset. We obtain that the asset strictly dominates money in …

A Preliminary Survey Of The Right To Presumption Of Innocence In Singapore, Siyuan Chen

Research Collection Yong Pung How School Of Law

The right to presumption of innocence is said to exist in almost all criminal justice systems, including Singapore. Curiously, however, no Singapore case has ever attempted to establish the exact source and contours of this longstanding right. This is unsatisfactory, as this diminishes the meaningfulness of what is supposed to be a fundamental right in the criminal justice process. The primary aim of this article is thus to conduct a preliminary survey of the law on the presumption of innocence in Singapore. It begins by proposing the Woolmington conception as a workable starting point, but posits a guiding principle to …

The Structure Of Strategy-Proof Random Social Choice Functions Over Product Domains And Lexicographically Separable Preferences, Shurojit Chatterji, Souvik Roy, Arunava Sen

Research Collection School Of Economics

We characterize the class of dominant-strategy incentive-compatible (or strategy-proof) random social choice functions in the standard multi-dimensional voting model where voter preferences over the various dimensions (or components) are lexicographically separable. We show that these social choice functions (which we call generalized random dictatorships) are induced by probability distributions on voter sequences of length equal to the number of components. They induce a fixed probability distribution on the product set of voter peaks. The marginal probability distribution over every component is a random dictatorship. Our results generalize the classic random dictatorship result in Gibbard (1977) and the decomposability results for …

Optimal Design Of P-Value Consistent Step-Up Procedures For Multiple Comparisons With A Control In Direction-Mixed Families, Koon Shing Kwong, Siu Hung Cheung

Research Collection School Of Economics

It is common in clinical studies for several treatments to be compared to a control. Most of the related statistical techniques have been developed to accommodate inferential families in which all hypotheses are either one- or two-sided such that the familywise error rate is controlled at a specified level. Several multiple testing procedures were recently proposed to perform multiple comparisons with a control in direction-mixed families that contain a mixture of one- and two-sided inferences. Of these procedures, the p-value consistent step-up procedure is found to be superior in terms of its power and p-value consistent property. In this paper, …

Contracting Over Prices, Shurojit Chatterji, Sayantan Ghosal

Research Collection School Of Economics

We define a solution concept, perfectly contracted equilibrium, for an intertemporal exchange economy where agents are simultaneously price takers in spot commodity markets while engaging inefficient, non-Walrasian contracting over future prices. Without requiring that agents have perfect foresight, we show that perfectly contracted equilibrium outcomes are a subset of Pareto optimal allocations. It is a robust possibility for perfectly contracted equilibrium outcomes to differ from Arrow-Debreu equilibrium outcomes. We show that both centralized banking and retrading with bilateral contracting can lead to perfectly contracted equilibria.

Aesthetic Constructions Of Korea Nationalism: Spectacle, Politics And History, Yooil Bae

Research Collection School of Social Sciences

No abstract provided.

Singapore Inflation Expectations: Expecting The Unexpected, Aurobindo Ghosh, Jun Yu

Research Collection School Of Economics

The study of inflation expectations of Singapore house-holds is a multi-disciplinary industry-relevant research that comes out of a partnership between Singapore Management University (SMU) and MasterCard. The research team for this MasterCard-SKBI Singapore Index of Inflation Expectations (SInDEx) project applied rigorous methods using current internet-based marketing survey tools for data-collection and advanced econometric techniques to analyse the data. The updates from the quarterly waves are keenly followed by policymakers, market watchers and the media because of the enormous importance of cost of living to individuals and businesses alike.

Fuelling The Asian Growth Engine: Talent Challenges, Strategies And Trends, Mario Ferraro, Catherine Mudford, Karina Kuok, Saumya Sindhwani, Rebecca Siow

Research Collection Lee Kong Chian School Of Business

The emerging economies of Asia are increasingly playing a critical role in the global arena, even as there is continuing turmoil and uncertainty in other parts of the world due to economic, financial and political upheavals. While Asian economies are undoubtedly impacted by global headwinds, most of them have been buffered by their sound economic and policy fundamentals, healthy domestic demand and continued inflow of Foreign Direct Investment (FDI). Meanwhile, Asia is undergoing its own transformation: many countries in Asia are experiencing greater economic prosperity and rising affluence, translating into higher demand for goods and services. As businesses flock to …

The New Hong Kong Mediation Ordinance: Much Ado About Nothing?, Nadja Alexander

Research Collection Yong Pung How School Of Law

In this post on the Kluwer Mediation Blog, the purpose of the Mediation Ordinance (MO) passed in June 2012 by the Hong Kong Legislative Council is discussed.

China's Rare Earths Export Quotas: Out Of The China-Raw Materials Gate, But Past The Wto's Finish Line?, Han-Wei Liu, John Maughan

Research Collection Yong Pung How School Of Law

Several recent studies have discussed the ramifications of the China – Raw Materials case for China's rare earths. However, none of these studies has conducted a thorough investigation of China's current export quota regime for rare earths or how it might stand up under WTO rules, assuming that it would be treated the same. This article makes no such assumption, investigating China's export quota regime for rare earths as it stands in early June 2012. The regime is somewhat improved over that applied during the Raw Materials case and could allow a more favourable WTO ruling. However, if General Agreement …

Use Of Rss Feeds To Push The Online Content To Users, Dan Ma

Research Collection School Of Computing and Information Systems

Many websites use Really Simple Syndication (RSS) feeds to actively push their online content to users rather than waiting for users to pull the content passively. In this paper, I construct a theoretical game model to study the profitability of an RSS-PUSH delivery mechanism. The model assumes a general profit structure for websites and heterogeneous users. To access valuable online content, users incur a variety of costs. They choose either to visit the website in the conventional way (the PULL model) or, if it is supported by the website, to use RSS (the PUSH model). Interestingly, I show that although …

A Survey Of Recommender Systems In Twitter, Su Mon Kywe, Ee Peng Lim, Feida Zhu

Research Collection School Of Computing and Information Systems

Twitter is a social information network where short messages or tweets are shared among a large number of users through a very simple messaging mechanism. With a population of more than 100M users generating more than 300M tweets each day, Twitter users can be easily overwhelmed by the massive amount of information available and the huge number of people they can interact with. To overcome the above information overload problem, recommender systems can be introduced to help users make the appropriate selection. Researchers have began to study recommendation problems in Twitter but their works usually address individual recommendation tasks. There …

Extracting And Normalizing Entity-Actions From Users' Comments, Swapna Gottipati, Jing Jiang

Research Collection School Of Computing and Information Systems

With the growing popularity of opinion-rich resources on the Web, new opportunities and challenges arise and aid people in actively using such information to understand the opinions of others. Opinion mining process currently focuses on extracting the sentiments of the users on products, social, political and economical issues. In many instances, users not only express their sentiments but also contribute their ideas, requests and suggestions through comments. Such comments are useful for domain experts and are referred to as actionable content. Extracting actionable knowledge from online social media has attracted a growing interest from both academia and the industry. We …

Visualization For Anomaly Detection And Data Management By Leveraging Network, Sensor And Gis Techniques, Zhaoxia Wang, Chee Seng Chong, Rick S. M. Goh, Wanqing Zhou, Dan Peng, Hoong Chor Chin

Research Collection School Of Computing and Information Systems

This paper studies the importance of visualization for discerning and interpreting patterns of data and its application for solving real problems, such as anomaly detection and data management. There are various ways to realize visualization to cater to the needs of numerous real life applications. Depending on needs, a combination of some of these ways may be required for presenting an effective visualization. The authors present visualization schemes for anomaly detection/condition monitoring and data management by leveraging network techniques and combining them with modern techniques such as sensor, database, mobile communication, GPS and GIS techniques. Two case studies are presented …

Finding Thoughtful Comments From Social Media, Gottipati Swapna, Jing Jiang

Research Collection School Of Computing and Information Systems

Online user comments contain valuable user opinions. Comments vary greatly in quality and detecting high quality comments is a subtask of opinion mining and summarization research. Finding attentive comments that provide some reasoning is highly valuable in understanding the user’s opinion particularly in sociopolitical opinion mining and aids policy makers, social organizations or government sectors in decision making. In this paper we study the problem of detecting thoughtful comments. We empirically study various textual features, discourse relations and relevance features to predict thoughtful comments. We use logistic regression model and test on the datasets related to sociopolitical content. We found …

Community-Based Classification Of Noun Phrases In Twitter, Freddy Chong Tat Chua, William W. Cohen, Justin Betterridge, Ee-Peng Lim

Research Collection School Of Computing and Information Systems

Many event monitoring systems rely on counting known keywords in streaming text data to detect sudden spikes in frequency. But the dynamic and conversational nature of Twitter makes it hard to select known keywords for monitoring. Here we consider a method of automatically finding noun phrases (NPs) as keywords for event monitoring in Twitter. Finding NPs has two aspects, identifying the boundaries for the subsequence of words which represent the NP, and classifying the NP to a specific broad category such as politics, sports, etc. To classify an NP, we define the feature vector for the NP using not just …

Validity Evidence For The Situational Judgment Test Paradigm In Emotional Intelligence Measurement, Nele Libbrecht, Filip Lievens

Research Collection Lee Kong Chian School Of Business

To date, various measurement approaches have been proposed to assess emotional intelligence (EI). Recently, two new EI tests have been developed based on the situational judgment test (SJT) paradigm: the Situational Test of Emotional Understanding (STEU) and the Situational Test of Emotion Management (STEM). Initial attempts have been made to examine the construct-related validity of these new tests; we extend these findings by placing the tests in a broad nomological network. To this end, 850 undergraduate students completed a personality inventory, a cognitive ability test, a self-report EI test, a performance-based EI measure, the STEU, and the STEM. The SJT-based …

A Historical Review And Assessment Of Urban Heat Island Research In Singapore, Matthias Roth, Winston T. L. Chow

Research Collection School of Social Sciences

This historical review of 20 studies since the 1960s examines the influence of urban development on the thermal environment in Singapore, a fast growing tropical island city-state. Past observations are critically assessed with regard to experimental controls and station metadata. Given the availability of historical climate and developmental data spanning almost 50 years, changes in urban heat island (UHI) intensity and spatial coverage can be traced temporally. Rapid urban expansion in Singapore is clearly reflected in spatially and temporally changing air and surface temperature patterns. The nocturnal canopy-layer UHI intensity – measured as the difference between the commercial urban core …

Cpf Life: Managing Longevity Risk As Singaporeans Live Longer, Singapore Management University

Perspectives@SMU

To combat the possibility that retirees might outlive their assets, Singapore’s Central Provident Fund (CPF) – the national compulsory savings and social security scheme – made the bold move of mandating annuitisation. This followed the findings of a 2007 government study examining how CPF might respond to an increasing life expectancy as the country's baby boomer generation enters retirement.

How To Be Cool In School? A Dating Expert Offers Smu Students A Five-Step Approach, Singapore Management University

Perspectives@SMU

In a just world, we would expect qualities like diligence, persistence and persuasiveness to pay off, but things are a lot more complicated when it comes to attraction. Dating expert David Tian, addresses SMU students on how people ought to better their odds at love and romance.

Income Inequality: Challenges In Bridging The Gap, Singapore Management University

Perspectives@SMU

Increase social spending. Fine-tune foreign labour policies. Create more job opportunities.

These were just a few of the suggestions made during a forum organized by the anti-poverty group, ONE (Singapore) and Singapore Management University's Wee Kim Wee Centre on how to bridge the income inequality gap in Singapore.

Halimah Yacob, the Minister of State for the Ministry of Social and Family Development, said in the forum that a concern with income inequality is its impact on social mobility, as people need to have “a sense of hope and optimism that they can aspire to a better life”. How each society …