Social and Behavioral Sciences Commons^™

Interestingness-Driven Diffussion Process Summarization In Dynamic Networks, Qiang Qu, Siyuan Liu, Christian Jensen, Feida Zhu, Christos Faloutsos

Research Collection School Of Computing and Information Systems

The widespread use of social networks enables the rapid diffusion of information, e.g., news, among users in very large communities. It is a substantial challenge to be able to observe and understand such diffusion processes, which may be modeled as networks that are both large and dynamic. A key tool in this regard is data summarization. However, few existing studies aim to summarize graphs/networks for dynamics. Dynamic networks raise new challenges not found in static settings, including time sensitivity and the needs for online interestingness evaluation and summary traceability, which render existing techniques inapplicable. We study the topic of dynamic …

Cosmopolitanism As Cultural Capital: Exploring The Intersection Of Globalization, Education, And Stratification, Hiroki Igarashi, Hiro Saito

Research Collection School of Social Sciences

In recent years, sociological research on cosmopolitanism has begun to draw on Pierre Bourdieu to critically examine how cosmopolitanism is implicated in stratification on an increasingly global scale. In this paper, we examine the analytical potential of the Bourdieusian approach by exploring how education systems help to institutionalize cosmopolitanism as cultural capital whose access is rendered structurally unequal. To this end, we first probe how education systems legitimate cosmopolitanism as a desirable disposition at the global level, while simultaneously distributing it unequally among different groups of actors according to their geographical locations and volumes of economic, cultural, and social capital …

Palm Oil-Based Biofuels And Sustainability In Southeast Asia: A Review Of Indonesia, Malaysia, And Thailand, Ishani Mukherjee, Benjamin K. Sovacool

Research Collection School of Social Sciences

By extensively reviewing the current state of knowledge, this paper explores the sustainability implications of palm oil biodiesel in Southeast Asia, with a focus on Indonesia, Malaysia and Thailand. Both ecological and environmental vitality as well as socio-economic equity are emphasized in the authors' exploration of sustainability in the three country cases. The article observes that the main environmental sustainability considerations of palm oil biodiesel include its capacity to reduce carbon dioxide emissions, its carbon debt and its repercussions on forestry, biodiversity, and soil and water quality. Issues surrounding socio-economic sustainability encompass how palm oil biodiesel affects food security in …

Review: Humanist Geography: An Individual's Search For Meaning By Yi‐Fu Tuan, Justin K. H. Tse

Research Collection School of Social Sciences

Yi‐Fu Tuan's latest book is a defence of individualism aimed at a wide lay readership, “a book on education that could benefit children everywhere” (p. ix). It is also a fascinating illustration of the relevance of geographies of religion to ongoing interests in humanistic geography. Indeed, one of Tuan's central arguments is that “religious thinking both undergoes and completes humanist thinking” and is therefore not “a relic that humanism has to outgrow,” for that would be a “regrettable” narrowing of the “scope of inquiry” in humanistic geography that “offends the spirit of humanism” (p. 5). It is this latter interest …

Linking Trade And Security: Evolving Institutions And Strategies In Asia, Europe, And The United States By Vinod K. Aggarwal And Kristi Govella, Henry S. Gao

Research Collection Yong Pung How School Of Law

Trade and security, while seemingly unrelated, have had a long and complicated relationship. On the one hand, trade has often been used as a means to enhance the security of the state. For example, the famous Silk Road was created and maintained by the Han Dynasty to seek allies to help defend itself against the Huns. On the other hand, security has been deemed as an important safeguard to trade, as is shown by the prevalence of the ‘Gunboat Diplomacy’ in the nineteenth century

The Domino Logic Of The Darkest Moment: The Fall Of Singapore, The Atlantic Echo Chamber, And 'Chinese Penetration' In Us Cold War Policy Toward Southeast Asia, Wen-Qing Ngoei

Research Collection School of Social Sciences

This essay argues that Anglo-American memories of Japan's victory in Singapore in 1942, which British Prime Minister Winston Churchill labeled Britain's "darkest moment" in World War II, soon would underpin the domino logic within US Cold War strategy. For both American and British policymakers, Japan's war machine had fused together in interconnected insecurity the bastions of Euro-American colonial power. In Southeast Asia, it had imposed the condition that one state's vulnerabilities impinged upon the stability of its neighbor. This vision of Southeast Asia's interconnected insecurity was central to the domino logic within US Cold War policy. US policymakers' preoccupation with …

Housing Policies In Singapore: Evaluation Of Recent Proposals And Recommendations For Reform, Sock Yong Phang, David K. C. Lee, Alan Cheong, Kok Fai Phoon, Karol Wee

Research Collection Lee Kong Chian School Of Business

The Singapore housing market is unusual in its high homeownership rate, the dominance of HDB housing, and the extensive intervention of the government in regulating housing supply and demand in both the HDB and private housing sectors. Recent rapid population increases in a low interest rate and high global liquidity environment has resulted in accelerated house prices increases in Singapore. Earlier this year, the government launched “Our Singapore Conversation” of which discussion on housing policies constitutes one major component. This “conversation” comes in the wake of several consecutive rounds of measures to stabilize housing prices using various instruments. This paper …

The Move To Business Schools: How Is Industrial-Organizational Psychology Holding Up In Europe?, Frederik Anseel, Bernd Carette, Jonas W. B. Lang, Filip Lievens

Research Collection Lee Kong Chian School Of Business

Aguinis, Bradley, and Brodersen (in press) empirically documented the move of Industrial and Organizational (I/O) psychologists to business schools, thereby mainly focusing on the situation in the US. However, in the last decades, I/O psychology has seen a trend towards internationalization. For instance, since the early 90s, there has been a steady increase in the number of authors from outside of the US publishing in Journal of Applied Psychology and Personnel Psychology (Cascio & Aguinis, 2008). Similarly, in international rankings the number of European business schools has increased (Collet & Vives, 2013). This begs the question as to whether a …

A Framework For Policy Crowdsourcing, John Prpić, Araz Taeihagh, James Melton

Research Collection School of Social Sciences

What is the state of the literature in respect to Crowdsourcing for policy making? This work attempts to answer this question by collecting, categorizing, and situating the extant research investigating Crowdsourcing for policy, within the broader Crowdsourcing literature. To do so, the work first extends the Crowdsourcing literature by introducing, defining, explaining, and using seven universal characteristics of all general Crowdsourcing techniques, to vividly draw-out the relative trade-offs of each mode of Crowdsourcing. From this beginning, the work systematically and explicitly weds the three types of Crowdsourcing to the stages of the Policy cycle as a method of situating the …

The Protection From Harassment Act 2014: Legislative Comment, Yihan Goh, Man Yip

Research Collection Yong Pung How School Of Law

The Protection from Harassment Act 2014 (“Act”) was passed by Parliament on 13 March 2014 following its Second Reading. The Act is a culmination of a concerted ministerial effort to bring about legislative change to the laws governing harassment. Bringing together the background to the Act, its general structure and its specific provisions, this article aims to add to the undoubted long list of commentaries on the Act and, it is hoped, contribute to the understanding and enforcement of the Act.

Setting Up A Non-Profit Trust Company: The Special Needs Trust Company In Singapore, Hang Wu Tang

Research Collection Yong Pung How School Of Law

Persons with special needs are in an extremely vulnerable position where they are potentially subject to financial abuse by criminals or other untrustworthy people. In Singapore, this concern has led to the setting up of a non-profit company called the Special Needs Trust Company (SNTC). This article traces the formation of SNTC, the infrastructure and legal documentation required for setting up such a non-profit company and how the special needs trust is currently used in Singapore. The Singapore experience may provide a useful starting point to policy makers and non-governmental organisations from other jurisdictions which may be looking into the …

Troublesome Women And The Nanny State: Drawing Boundaries And Legislating Bifurcated Belonging In Patriarchal Singapore, Eugene K. B. Tan

Research Collection Yong Pung How School Of Law

Singapore was and remains an immigrant society. The immigration of newcitizens and temporary workers has become the primary means by which thepopulation is replenished and right-sized for its economic and demographicrequirements. More than one in three persons (or 38.6 percent) living inSingapore are foreigners (non-citizens, including permanent residents) in2013.[2] Of the 3.45 million working population in Singapore, about 38 percent(or about 1,296,800 persons are foreigners.[3] The vast majority of theseforeigners are transient workers (migrant workers) on short-term work permits.Of these, about 211,000—all women—are employed as domestic help (or ‘maids’ inlocal parlance) as of June 2013.

Testing Conditional Independence Via Empirical Likelihood, Liangjun Su, Halbert White

Research Collection School Of Economics

We construct two classes of smoothed empirical likelihood ratio tests for the conditional independence hypothesis by writing the null hypothesis as an infinite collection of conditional moment restrictions indexed by a nuisance parameter. One class is based on the CDF; another is based on smoother functions. We show that the test statistics are asymptotically normal under the null hypothesis and a sequence of Pitman local alternatives. We also show that the tests possess an asymptotic optimality property in terms of average power. Simulations suggest that the tests are well behaved in finite samples. Applications to some economic and financial time …

Intraday Periodicity Adjustments Of Transaction Duration And Their Effects On High-Frequency Volatility Estimation, Yiu Kuen Tse, Yingjie Dong

Research Collection School Of Economics

We study two methods of adjusting for intraday periodicity of high-frequency financial data: the well-known Duration Adjustment (DA) method and the recently proposed Time Transformation (TT) method (Wu (2012)). We examine the effects of these adjustments on the estimation of intraday volatility using the Autoregressive Conditional Duration-Integrated Conditional Variance (ACD-ICV) method of Tse and Yang (2012). We find that daily volatility estimates are not sensitive to intraday periodicity adjustment. However, intraday volatility is found to have a weaker U-shaped volatility smile and a biased trough if intraday periodicity adjustment is not applied. In addition, adjustment taking account of trades with …

Modified Qml Estimation Of Spatial Autoregressive Models With Unknown Heteroskedasticity And Nonnormality, Shew Fan Liu, Zhenlin Yang

Research Collection School Of Economics

In the presence of heteroskedasticity, Lin and Lee (2010) show that the quasi maximum likelihood (QML) estimators of spatial autoregressive models (SAR) can be inconsistent as a ‘necessary’ condition for consistency can be violated, and thus propose robust GMM estimators for the model. In this paper, we first show that this condition may hold in many practical situations and when it does the regular QML estimators can be consistent.In cases where this condition is violated, we propose a modified QML estimation method robust against heteroskedasticity of unknown form. In both cases, asymptotic distributions of the estimators are derived, and methods …

Initial-Condition Free Estimation Of Fixed Effects Dynamic Panel Data Models, Zhenlin Yang

Research Collection School Of Economics

It is well known that (quasi) MLE of dynamic panel data (DPD) models with short panels depends on the assumptions on the initial values; ignoring them or a wrong treatment of them will result in inconsistency or serious bias. This paper introduces a initial-condition free method for estimating the fixed-effects DPD models, through as simple modification of the quasi-score. An outer-product-of-gradients (OPG) method is also proposed for robust inference. The MLE of Hsiao, Pesaran and Tahmiscioglu (2002, Journal of Econometrics), where the initial observations are modeled, is extended to quasi MLE and an OPG method is proposed for robust inference. …

Exchange Rates And Export Structure, Wen-Tai Hsu, Yi Lu, Yingke Zhou

Research Collection School Of Economics

This paper studies whether changes in the exchange rate affect a country’s export structure, using an arguably exogenous sudden appreciation of renminbi on July 21, 2005 as the main source of identification. Employing combined regression discontinuity and difference-in-differences approach, we show that China’s export structure became more similar to that of the developed countries after the currency appreciation. We also find that the majority of the appreciation effect comes from the inter-firm resource reallocation rather than the inter-region or intra-firm resource reallocation.

Do Venture Capitalists Play A Monitoring Role In An Emerging Market: Evidence From The Pay-Performance Relationship Of Chinese Entrepreneurial Firms?, Jerry X. Cao, Qigui Liu, Gary G. Tian

Research Collection Lee Kong Chian School Of Business

This paper investigates venture capitalists’ monitoring of managerial behaviour by examining their impact on CEO pay-performance sensitivity across various controlling structures in Chinese firms. We find that the effectiveness of venture capitalists' monitoring depends on different types of agency conflict. In particular, we find that venture capital (VC) monitoring is hampered in firms that experience severe controlling-minority agency problems caused by disproportionate ownership structures. We provide further evidence that VC is more likely to exert close monitoring in firms that have greater managerial agency conflict, and thus require more direct monitoring. However, controlling-minority agency problems have a greater impact on …

Experiments On Crowdsourcing Policy Assessment, John Prpić, Araz Taeihagh, James Melton

Research Collection School of Social Sciences

Can Crowds serve as useful allies in policy design? How do non-expert Crowds perform relative to experts in the assessment of policy measures? Does the geographic location of non-expert Crowds, with relevance to the policy context, alter the performance of non-experts Crowds in the assessment of policy measures? In this work, we investigate these questions by undertaking experiments designed to replicate expert policy assessments with non-expert Crowds recruited from Virtual Labor Markets. We use a set of ninety-six climate change adaptation policy measures previously evaluated by experts in the Netherlands as our control condition to conduct experiments using two discrete …

Multiscale Co-Simulation Of Energyplus And Citysim Models Derived From A Building Information Model, Daren Thomas, Clayton Miller, Jérôme Kämpf, Arno Schlueter

Research Collection College of Integrative Studies

We present an approach for rapidly assessing the performance of early design stage building information models (BIM) from both the building and urban systems scale. This effort builds upon two previously developed tools, the Design Performance Viewer (DPV) and the CitySim urban simulation engine. It couples them to produce a more informed model. The DPV is a plugin for Autodesk Revit Architecture that creates a model for the EnergyPlus building performance engine based on information contained in the BIM. We combine the two simulation engines using the Functional Mock-up Interface (FMI) co-simulation framework to improve the accuracy of both simulations. …

A Characterization Of Single-Peaked Preferences Via Random Social Choice Functions, Shurojit Chatterji, Arunava Sen, Huaxia Zeng

Research Collection School Of Economics

The paper proves the following result: every path-connected domain of preferences that admits a strategy-proof, unanimous, tops-only random social choice function satisfying a compromise property, is single-peaked. Conversely, every single-peaked domain admits a random social choice function satisfying these properties. Single-peakedness is defined with respect to arbitrary trees. We also show that a maximal domain that admits a strategy-proof, unanimous, tops-only random social choice function satisfying a stronger version of the compromise property, is single-peaked on a line. A converse to this result also holds. The paper provides justification of the salience of single-peaked preferences and evidence in favour of …

Asymptotic Distribution And Finite-Sample Bias Correction Of Qml Estimators For Spatial Dependence Model, Shew Fan Liu, Zhenlin Yang

Research Collection School Of Economics

In studying the asymptotic and finite-sample properties of quasi-maximum likelihood (QML) estimators for the spatial linear regression models, much attention has been paid to the spatial lag dependence (SLD) model; little has been given to its companion, the spatial error dependence (SED) model. In particular, the effect of spatial dependence on the convergence rate of the QML estimators has not been formally studied, and methods for correcting finite-sample bias of the QML estimators have not been given. This paper fills in these gaps. Of the two, bias correction is particularly important to the application of this model. Contrary to the …

Borrower Targeting Under Microfinance: Competition With Motivated Microfinance Institutions And Strategic Complementarity, Brishti Guha, Prabal Roy Chowdhury

Research Collection School Of Economics

We examine how increased competition among motivated microfinance institutions (MFIs) impacts the poorest borrowers’ access to microfinance. We find that competition depends on inequality, technology, and the possibility of double-dipping (borrowing from several sources). Without competition, even a motivated MFI may lend to the not-so-poor in preference to poor borrowers. If double-dipping is feasible, competition may encourage lending to the poor. The presence of double-dipping is critical for MFI competition to have a positive effect. When double-dipping is feasible, MFI coordination may worsen borrower targeting whenever inequality is intermediate. We discuss policy implications dealing with double-dipping, MFI coordination, and competition.

Bim-Extracted Energyplus Model Calibration For Retrofit Analysis Of A Historically Listed Building In Switzerland, Clayton Miller, Daren Thomas, Silvia Domingo Irigoyen, Christian Hersberger, Zoltán Nagy, Dino Rossi, Arno Schlueter

Research Collection College of Integrative Studies

Building retrofit analysis in Switzerland traditionally relies on expert heuristics and best practices. These processes are not often supplemented by data or model-driven techniques that would enhance the accuracy and ability to quantify the impact of innovative technologies. We present a process of calibrated building energy model (BEM) analysis of a case study using a building information model (BIM) and measured data from a custom wireless sensor network. The case study is a mixed-use office and residential historically listed building in Zürich, Switzerland. A BIM model was first developed in Autodesk Revit and then extracted to an EnergyPlus model through …

A Study Of Age Gaps Between Online Friends, Lizi Liao, Jing Jiang, Ee Peng Lim, Heyan Huang

Research Collection School Of Computing and Information Systems

User attribute extraction on social media has gain considerable attention, while existing methods are mostly supervised which suffer great diffi- culty in insufficient gold standard data. In this paper, we validate a strong hypothesis based on homophily and adapt it to ensure the certainty of user attribute we extracted via weakly supervised propagation. Homophily, the theory which states that people who are similar tend to become friends, has been well studied in the setting of online social networks. When we focus on age attribute, based on this theory, online friends tend to have similar age. In this work, we take …

An Exploratory Study On Software Microblogger Behaviors, Yuan Tian, David Lo

Research Collection School Of Computing and Information Systems

Microblogging services are growing rapidly in the recent years. Twitter, one of the most popular microblogging sites, has gained more than 500 millions users. Thousands of developers are also using Twitter to communicate with one another and microblog about software-related topics such as programming languages, code libraries, etc. Understanding the behaviors of software microbloggers is one of the needed first steps toward building automated tools to encourage software microblogging activities and harness software microblogging to improve various software engineering activities. In this paper, we investigate the behaviors of software microbloggers in terms of their microblogging frequency, generated contents, and interactions …

Sharing Political News: The Balancing Act Of Intimacy And Socialization In Selective Exposure, Jisun An, Daniele Quercia, Meeyoung Cha, Krishna Gummadi, Jon Crowcroft

Research Collection School Of Computing and Information Systems

One might think that, compared to traditional media, social media sites allow people to choose more freely what to read and what to share, especially for politically oriented news. However, reading and sharing habits originate from deeply ingrained behaviors that might be hard to change. To test the extent to which this is true, we propose a Political News Sharing (PoNS) model that holistically captures four key aspects of social psychology: gratification, selective exposure, socialization, and trust & intimacy. Using real instances of political news sharing in Twitter, we study the predictive power of these features. As one might expect, …

The Rise Of The Gen Y Workforce In India, Singapore Management University

Perspectives@SMU

Technology, education, and demographics make the Indian Gen Y a force to be reckoned with

Buildings And Spaces: Are They Relevant In The Virtual Environment?, Gulcin Cribb

Research Collection Library

This presentation covers library buildings, spaces and users in the current environment. It highlights how Singapore libraries have evolved and their approaches to library spaces. A case study of Singapore Management University Libraries is presented. Other libraries covered are National Library Board (Early Literacy Library), National University of Singapore (Hon Sui Sen Memorial Library), Nanyang Technological University, Temasek Polytechnic, Nanyang Polytechnic.

This presentation is part of the Executive Library Management Programme (ELMP) course by the Library Association of Singapore in August 2014.

Integrating Il Skills Into The Curriculum: The Smu Experience With Academic Writing, Priyanka Sharma

Research Collection Library

The Li Ka Shing Library at SMU has been collaborating with SMU’s Centre for English Communication (CEC) to deliver a 1.5 hour long hands-on training for students enrolled in the Academic Writing course.

The programme has evolved from a somewhat generic library skills training programme to one that addresses the specific research and library skills needs of Academic Writing students. The programme curriculum has been gradually enhanced based primarily on an analysis of the feedback received from the students themselves, as well as from Academic Writing instructors at the CEC and the research librarians involved in the library training programme. …