Social and Behavioral Sciences Commons^™

Warning System For Property Bubbles, Jun Yu, Peter C. B. Phillips

Research Collection School Of Economics

A commentary on what constitutes a sound system to warn against property bubbles.

Instrumental Variable Quantile Estimation Of Spatial Autoregressive Models, Liangjun Su, Zhenlin Yang

Research Collection School Of Economics

We propose a spatial quantile autoregression (SQAR) model, which allows cross-sectional dependence among the responses, unknown heteroscedasticity in the disturbances, and heterogeneous impacts of covariates on different points (quantiles) of a response distribution. The instrumental variable quantile regression (IVQR) method of Chernozhukov and Hansen (2006) is generalized to allow the data to be non-identically distributed and dependent, an IVQR estimator for the SQAR model is then defined, and its asymptotic properties are derived. Simulation results show that this estimator performs well in finite samples at various quantile points. In the special case of spatial median regression, it outperforms the conventional …

Oral History Interview With Steven Miller: Conceptualising Smu, Steven Miller

Oral History Collection

The interview covered: first involvement with SMU, setting up School of Information Systems, collaboration with Carnegie Mellon University, industry relations, student interaction, faculty research, graduate placement, postgraduate programs.

Biography:

Founding Dean, School of Information Systems, SMU, 2002–present

Professor Steven Miller is founding dean of the School of Information Systems at Singapore Management University, a position he has held since December 2002. Since joining SMU, he has concentrated on developing all aspects of the School of information Systems, including undergraduate and post-graduate educational programmes, research strategies and capabilities, interactions with external stakeholders, and the school’s relationship with Carnegie Mellon. Through LiveLabs, …

Innovation And Employment, Hian Teck Hoon, Edmund S. Phelps

Research Collection School of Economics

Is employment higher in an economy that has a higher rate of innovation? In Hoon and Phelps (1997), we study this question in the small open, and closed, economy under the assumption that the rate of technological progress is exogenous to the economic system.In this paper, we reexamine this question in the context of a model with endogenous product innovation (and thus endogenous technological progress) and endogenous labor supply first in a small open economy taking the world interest rate as given and then ina closed economy that determines the whole term structure of the interest rate. In our present …

Smu Is One Of The Youngest Universities To Receive Accreditation From Oldest Global Accrediting Body Aacsb International, Singapore Management University

SMU Press Releases and News

No abstract provided.

Comparing Twitter And Traditional Media Using Topic Models, Wayne Xin Zhao, Jing Jiang, Jianshu Weng, Jing He, Ee Peng Lim, Hongfei Yan, Xiaoming Li

Research Collection School Of Computing and Information Systems

Twitter as a new form of social media can potentially contain much useful information, but content analysis on Twitter has not been well studied. In particular, it is not clear whether as an information source Twitter can be simply regarded as a faster news feed that covers mostly the same information as traditional news media. In This paper we empirically compare the content of Twitter with a traditional news medium, New York Times, using unsupervised topic modeling. We use a Twitter-LDA model to discover topics from a representative sample of the entire Twitter. We then use text mining techniques to …

Change And Persistence In Marriage Payments In Vietnam, 1963-2000, Bussarawan Puk Teerawichitchainan, John Knodel

Research Collection School of Social Sciences

Among various marriage and family practices, economic exchange at the time of marriage is one of the most multifaceted and complex. Prevalence, direction, magnitude, and property rights of marriage payments can vary considerably over time and across societies. Despite their implications for the wellbeing of family members and the distribution of wealth across generations, trends and determinants of payments have rarely been examined at the population level. Based on representative data from the Vietnam Study of Family Change, we describe temporal trends, cohort patterns, and regional differences in payments among Vietnamese marriages contracted during 1963-2000 to ascertain influences of cultural …

Utility-Oriented K-Anonymization On Social Networks, Yazhe Wang, Long Xie, Baihua Zheng, Ken C. K. Lee

Research Collection School Of Computing and Information Systems

"Identity disclosure" problem on publishing social network data has gained intensive focus from academia. Existing k-anonymization algorithms on social network may result in nontrivial utility loss. The reason is that the number of the edges modified when anonymizing the social network is the only metric to evaluate utility loss, not considering the fact that different edge modifications have different impact on the network structure. To tackle this issue, we propose a novel utility-oriented social network anonymization scheme to achieve privacy protection with relatively low utility loss. First, a proper utility evaluation model is proposed. It focuses on the changes on …

Europäische Verteidigungsintegration Und Die Atomwaffenfrage, Clara Portela, Ursula Jasper

Research Collection School of Social Sciences

As it strives to develop a fully integrated security and defence policy, the European Union faces a dilemma. While integration is proceeding apace and now embraces a number of key areas of national security policy, the Union still shies away from holding a serious debate about the future of European - that is British and French - nuclear weapons. These two European states have sought to justify their continued ownership of nuclear weapons by citing their own (and Europe's) benevolent intentions and the fact that their actions are guided by an awareness of their responsibility. Instead, Europe must begin to …

Ovulation, Female Competition, And Product Choice: Hormonal Influences On Consumer Behavior, Kristina M. Durante, Vladas Griskevicius, Sarah E. Hill, Carin Perilloux, Norman P. Li

Research Collection School of Social Sciences

Recent research shows that women experience nonconscious shifts across different phases of the monthly ovulatory cycle. For example, women at peak fertility (near ovulation) are attracted to different kinds of men and show increased desire to attend social gatherings. Building on the evolutionary logic behind such effects, we examined how, why, and when hormonal fluctuations associated with ovulation influenced women's product choices. In three experiments, we show that at peak fertility women nonconsciously choose products that enhance appearance (e.g., choosing sexy rather than more conservative clothing). This hormonally regulated effect appears to be driven by a desire to outdo attractive …

The Mandatory Death Penalty And A Sparsely Worded Constitution, Jack Tsen-Ta Lee

Research Collection Yong Pung How School Of Law

It was not unexpected that the Singapore Court of Appeal would reaffirm the constitutionality of the mandatory death penalty for certain forms of drug trafficking in Yong Vui Kong v Public Prosecutor [2010] 3 S.L.R 489. ... The appellant made submissions based on Articles 9(1) and 12(1) of the Constitution, which respectively guarantee rights to life and personal liberty, and to equality before the law and equal protection of the law. This note examines aspects of the Article 9(1) arguments.

Shaping Up For A Landmark Election, Tan K. B. Eugene

Research Collection Yong Pung How School Of Law

Asst Prof Eugene Tan talks about significant developments he hopes to see in the upcoming General Elections.

Why It's Vital To Keep Manufacturing Alive, Augustine H. H. Tan

Research Collection School Of Economics

Augustine Tan responds to Singapore Democratic Party candidate Tan Jee Say's online article.

Warning Signs Of Future Asset Bubbles, Peter C. B. Phillips, Jun Yu

Research Collection School Of Economics

Values Survey, we find that individuals with higher levels of schooling, but whose income

Touching A Teddy Bear Mitigates The Negative Effects Of Social Exclusion, Kenneth Tai, Xue Zheng, Jayanth Narayanan

Research Collection Lee Kong Chian School Of Business

There is little empirical research to date that looks at how the deleterious effects of social exclusion can be mitigated. We examined how touching an inanimate object—a teddy bear—might impact the effect of social exclusion on prosocial behavior. Across two studies, we found that socially excluded individuals who touched a teddy bear acted more prosocially as compared to socially excluded individuals who just viewed the teddy bear from a distance. This effect was only observed for socially excluded participants and not for socially included (or control) participants. Overall, the findings suggest that touching a teddy bear mitigates the negative effects …

Asymptotic Theory For Zero Energy Functionals With Nonparametric Regression Applications, Qiying Wang, Peter C. B. Phillips

Research Collection School Of Economics

A local limit theorem is given for the sample mean of a zero energy function of a nonstationary time series involving twin numerical sequences that pass to infinity. The result is applicable in certain nonparametric kernel density estimation and regression problems where the relevant quantities are functions of both sample size and bandwidth. An interesting outcome of the theory in nonparametric regression is that the linear term is eliminated from the asymptotic bias. In consequence and in contrast to the stationary case, the Nadaraya-Watson estimator has the same limit distribution (to the second order including bias) as the local linear …

Ir-Tree: An Efficient Index For Geographic Document Search, Zhisheng Li, Ken C. K. Lee, Baihua Zheng, Wang-Chien Lee, Dik Lun Lee, Xufa Wang

Research Collection School Of Computing and Information Systems

Given a geographic query that is composed of query keywords and a location, a geographic search engine retrieves documents that are the most textually and spatially relevant to the query keywords and the location, respectively, and ranks the retrieved documents according to their joint textual and spatial relevances to the query. The lack of an efficient index that can simultaneously handle both the textual and spatial aspects of the documents makes existing geographic search engines inefficient in answering geographic queries. In this paper, we propose an efficient index, called IR-tree, that together with a top-k document search algorithm facilitates four …

Bias In Estimating Multivariate And Univariate Diffusions, Xiaohu Wang, Peter C. B. Phillips, Jun Yu

Research Collection School Of Economics

Multivariate continuous time models are now widely used in economics and finance. Empirical applications typically rely on some process of discretization so that the system may be estimated with discrete data. This paper introduces a framework for discretizing linear multivariate continuous time systems that includes the commonly used Euler and trapezoidal approximations as special cases and leads to a general class of estimators for the mean reversion matrix. Asymptotic distributions and bias formulae are obtained for estimates of the mean reversion parameter. Explicit expressions are given for the discretization bias and its relationship to estimation bias in both multivariate and …

Infinite Density At The Median And The Typical Shape Of Stock Return Distributions, Chirok Han, Jin Seo Cho, Peter C. B. Phillips

Research Collection School Of Economics

Statistics are developed to test for the presence of an asymptotic discontinuity (or infinite density or peakedness) in a probability density at the median. The approach makes use of work by Knight (1998) on L(1) estimation asymptotics in conjunction with nonparametric kernel density estimation methods. The size and power of the tests are assessed, and conditions under which the tests have good performance are explored in simulations. The new methods are applied to stock returns of leading companies across major U.S. industry groups. The results confirm the presence of infinite density at the median as a new significant empirical evidence …

Singapore Management University And Carnegie Mellon University To Create The Living Analytics Research Centre, Singapore Management University

SMU Press Releases and News

No abstract provided.

The Long-Term Impact Of War On Health And Well-Being In Northern Vietnam: Some Glimpses From A Recent Survey, Bussarawan Teerawichitchainan

Research Collection School of Social Sciences

War is considered one of the most intransigent obstacles to development; yet, the long-run effects of war on individual health have rarely been examined in the context of developing countries. Based on unique data recently collected as a pilot follow-up to the Vietnam Longitudinal Survey, this study examines health status of northern Vietnamese war cohorts (those who entered adulthood during the Vietnam War and now represent Vietnam’s older-adult population). To ascertain whether and how war impacts old-age physical and mental health, we compare multi-dimensional measures of health among war survivors, including civilians, combatants, noncombatants, and nonveterans involved in militia ctivities. …

Elephants In The Room: Challenges Of Integrating China Into The Wto System, Henry S. Gao

Research Collection Yong Pung How School Of Law

Since China’s accession to the WTO in late 2001, one of the most intriguing questions for trade analysts has been whether the “new kid on the block” would seek to disrupt the status quo in the WTO upon its entry. This paper answers the question by reviewing China’s participation in two key activities of the WTO, i.e., trade negotiations and dispute settlement, as well as another important component of global trade governance: regional trade agreements (RTAs). Drawing from an in-depth study of China’s record in these activities, the author argues that, overall, China has transformed from a passive “taker” of …

The Politics Of Identity In Indonesia: Results From Political Campaign Advertisements, Colm A. Fox, Jeremy Menchik

Research Collection School of Social Sciences

Despite the many benefits of democracy, a number of scholars have cited the dangers of introducing democratic elections in ethnically divided states. One of the biggest fears is the politicization of identity. However, very little research has systematically studied the particular conditions that compel politicians to make identity appeals. Taking the case of an ethnically diverse new democracy, Indonesia, this paper attempts just that. To measure identity appeals it takes the novel approach of drawing on political campaign posters. Between 2009 and 2011 over 4,000 political campaign posters were gathered from legislative and executive elections across hundreds of electoral districts …

Interpretations Of Virtue (De) In Early China, Alan Kam Leung Chan

Research Collection College of Integrative Studies

There is wide agreement that “virtue” finds its closest match inChinese philosophy in the concept of de . As a general concept, deconveys a sense of moral excellence, which finds expression in con-ceptually distinct virtues such as wisdom and courage. In the Confu-cian tradition it is often maintained that de pertains especially tomoral character or “moral charisma,” which defines the junzi or“gentleman” ideal.1 In this discussion, without rehearsing the manystudies on the meaning of de or retracing its usages in classical writ-ings,2 I explore how the concept is understood in three recently recov-ered early Chinese texts.

Smu Graduates Achieve Record Employment Rate And Higher Salaries, Singapore Management University

SMU Press Releases and News

No abstract provided.

Collective Intelligence Ratio: Measurement Of Real-Time Multimodal Interactions In Team Projects, Paul Kim, Donghwan Lee, Youngjo Lee, Chuan Huang, Tamas Makany

Research Collection Lee Kong Chian School Of Business

PurposeWith a team interaction analysis model, the authors sought to identify a varying range of individual and collective intellectual behaviors in a series of communicative intents particularly expressed with multimodal interaction methods. In this paper, the authors aim to present a new construct (i.e. collective intelligence ratio (CIR)) which refers to a numeric indicator representing the degree of intelligence of a team in which each team member demonstrates an individual intelligence ratio (IR) specific to a team goal.Design/methodology/approachThe authors analyzed multimodal team interaction data linked to communicative intents with a Poisson‐hierarchical generalized linear model (HGLM).FindingsThe study found evidence of a …

The Unintended Effects Of The Sarbanes-Oxley Act, Vidhi Chhaochharia, Clemens A. Otto, Vikrant Vig

Research Collection Lee Kong Chian School Of Business

The Sarbanes-Oxley Act (SOX) was passed in the wake of several scandals that rocked corporate America in 2001 and 2002. The objective behind SOX was to improve corporate governance by improving accounting disclosures. Compliance with Section 404 is considered by many to be the most costly requirement of SOX and has been argued to be a disproportionate burden for small firms. Consequently, firms with a public float below $75 million were granted several exemptions from compliance. We document an unintended effect of these exemptions: a weakening of corporate governance through a weakening of the market for corporate control.

The China-Taiwan Ecfa, Geopolitical Dimensions And Wto Law, Pasha L. Hsieh

Research Collection Yong Pung How School Of Law

This article examines legal and geopolitical aspects of the China-Taiwan Economic Cooperation Framework Agreement (ECFA). It begins by analyzing areas in which the two governments’ measures contravene rules of the World Trade Organization (WTO). In particular, it provides the first detailed examination of the significant implications emerging from the ECFA for cross-straits trade relations and East Asian regionalism. The article also explains how the ECFA was modeled on free trade agreements (FTAs) of the Association of Southeast Asian Nations and assesses the impact of the ECFA’s early harvest program. Finally, the article discusses the ECFA’s consistency with WTO requirements for …

Understanding Port Choice Behaviour: A Network Perspective, Loon Ching Tang, Joyce M. W. Low, Shao Wei Lam

Research Collection Lee Kong Chian School Of Business

A novel Network-based Integrated Choice Evaluation (NICE) model is developed to enhance the multinomial logit preference (MNL) model that is widely employed in the existing port choice literature. The NICE model integrates the element of port service network with observational port attributes to identify important quality characteristics on which liner shipping companies base their port choices. An empirical study of the proposed model is conducted through the service schedules of three established liner shipping companies. Results show that port efficiency and scale economies are the more important dimensions influencing liner shipping companies’ selection of major Asian ports. Nevertheless, it is …

India And Pakistan: A Tale Of Judicial Appointments, Shubhankar Dam

Research Collection Yong Pung How School Of Law

Recent judicial appointments in India and Pakistan have led to battles between their respective judicial and executive branches. In a moment of remarkable constitutional coincidence, two appointments were set aside in India and Pakistan last week. First, India's Supreme Court invalidated the appointment of P. J. Thomas to the Central Vigilance Commission (CVC). Days later, Pakistan's Supreme Court invalidated Deedar Shah's appointment to the National Accountability Bureau (NAB).