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Articles 6061 - 6090 of 9289

Full-Text Articles in Social and Behavioral Sciences

Creating Value Through Prizes For Undergraduate Research In Sustainability, Lynette Overby, Roger Jr. Strong, Mark Christel, Rebecca Pappert Maniates Aug 2014

Creating Value Through Prizes For Undergraduate Research In Sustainability, Lynette Overby, Roger Jr. Strong, Mark Christel, Rebecca Pappert Maniates

Research Collection Library

Gale-Cengage Learning, a leading e-research and educational publisher, has established a successful prize program recognizing undergraduate interdisciplinary research into sustainability issues, in collaboration with several universities. The research awards offered by this program support institutional faculty and student needs in teaching and learning, particularly regarding the growing need to recognize interdisciplinary research. Collaborations involve Temple University, the University of Delaware, the College of Wooster, and, most recently, Pennsylvania State University.

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Smu In Partnership With Tax Academy Of Singapore Launches New Centre For Excellence In Taxation, Singapore Management University Aug 2014

Smu In Partnership With Tax Academy Of Singapore Launches New Centre For Excellence In Taxation, Singapore Management University

SMU Press Releases and News

In collaboration with the Tax Academy of Singapore, and with the support of the Inland Revenue Authority of Singapore, the Singapore Management University has launched the SMU-TA Centre for Excellence in Taxation (SMU-TA CET) today. The SMU-TA CET represents a major new initiative in research addressing international and regional tax issues and taxation policies. It is the first research centre of its kind in Singapore. The aim of the Centre is to produce highly robust research in international and regional tax issues for policy-development and engagement of the international tax community.

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Opinion Mining Of Sociopolitical Comments From Social Media, Swapna Gottipati Aug 2014

Opinion Mining Of Sociopolitical Comments From Social Media, Swapna Gottipati

Dissertations and Theses Collection (Open Access)

Opinions are central to almost all human activities by influencing greatly the decision making process. In this thesis, we present the problems of mining issues, extracting entities and suggestive opinions towards the entities, detecting thoughtful comments, and extracting stances and ideological expressions from online comments in the sociopolitical domain. This study is essential for opinion mining applications that are beneficial for policy makers, government sectors and social organizations. Much work has been done to try to uncover consumer sentiments from online comments to help businesses improve their products and services. However, sociopolitical opinion mining poses new challenges due to complex …

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Facial Features And The Effectiveness Of Apology, Michal Franc Aug 2014

Facial Features And The Effectiveness Of Apology, Michal Franc

Dissertations and Theses Collection (Open Access)

Apology is an important tool for the maintenance of positive and cooperative relationships in the workplace. This paper reviews the existing research in the field of apology, and identifies four main components of apology. It uses impression management theory and signaling theory to explain the effect of apology. In addition, it proposes moderating effect of the offender's facial dominance on the effectiveness of apology. Specifically, previous research (e.g., Perrett et al., 1998) found that people with high facial dominance are less trustworthy, which suggests that apology may act as an equalizer between people with high and low facial dominance. Through …

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Urban Planning Process: Can Technology Enhance Participatory Communication?, Rojin Vishkaie, Richard Levy, Anthony Tang Aug 2014

Urban Planning Process: Can Technology Enhance Participatory Communication?, Rojin Vishkaie, Richard Levy, Anthony Tang

Research Collection School Of Computing and Information Systems

Oftentimes, within the urban planning process, urban planners and GIS experts must work together using desktop Computer-Aided Design (CAD) and Geographic Information System (GIS). However, participatory communication and visualization which are important in the urban planning process, are not a central focus in the design of current computer-aided planning technologies. This study tends to provide an understanding of technological challenges and complexities urban planners and GIS experts encounter while engaging in a participatory environment during the urban planning process. This study also explores the perceptions of urban planners and GIS experts about the potential impact and usefulness of interactive surfaces …

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On Macro And Micro Exploration Of Hashtag Diffusion In Twitter, Yazhe Wang, Baihua Zheng Aug 2014

On Macro And Micro Exploration Of Hashtag Diffusion In Twitter, Yazhe Wang, Baihua Zheng

Research Collection School Of Computing and Information Systems

This exploratory work studies hashtag diffusion in Twitter. The analysis is conducted from two aspects. From the macro perspective, we study general properties of hashtag diffusion, and classify hashtags into three main classes based on their temporal dynamics referred as 'single spike', 'multi-spikes', and 'fluctuation', and find that each of these classes has some unique characteristics. From the micro perspective, we investigate individual diffusion.We adopt Edelman's 'topology of influence' theory to identify four type of users with different influence levels in diffusion based on their dynamic retweet behaviors. The results of our study are useful for gaining more insights of …

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A Fast Decomposition Approach For Traffic Control, Xiaocheng Tang, Sébastien Blandin, Laura Wynter Aug 2014

A Fast Decomposition Approach For Traffic Control, Xiaocheng Tang, Sébastien Blandin, Laura Wynter

Research Collection School Of Computing and Information Systems

Real-time road traffic control has been the subject of active research efforts for more than fifty years. In recent years, however, the convergence of ubiquitous sensing with seamless communication technologies has motivated the development of more computationally efficient control methods, able to operate in real-time in a live environment. In this work, we present a fast decomposition method for network optimization problems, with application to real-time traffic control. Our approach is based on a nonlinear programming formulation of the network control problem and consists of an alternating directions method using forward numerical simulation in place of one of the optimization …

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Diversified Social Influence Maximization, Fangshuang Tang, Qi Liu, Hengshu Zhu, Enhong Chen, Feida Zhu Aug 2014

Diversified Social Influence Maximization, Fangshuang Tang, Qi Liu, Hengshu Zhu, Enhong Chen, Feida Zhu

Research Collection School Of Computing and Information Systems

For better viral marketing, there has been a lot of research on social influence maximization. However, the problem that who is influenced and how diverse the influenced population is, which is important in real-world marketing, has largely been neglected. To that end, in this paper, we propose to consider the magnitude of influence and the diversity of the influenced crowd simultaneously. Specifically, we formulate it as an optimization problem, i.e., diversified social influence maximization. First, we present a general framework for this problem, under which we construct a class of diversity measures to quantify the diversity of the influenced crowd. …

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Appealing To The Masses Understanding Ethnic Politics And Elections In Indonesia (Doctoral Dissertation), Colm A. Fox Aug 2014

Appealing To The Masses Understanding Ethnic Politics And Elections In Indonesia (Doctoral Dissertation), Colm A. Fox

Research Collection School of Social Sciences

The mobilization of ethnic groups during elections is seen by many as one of the greatest threats to democracy in ethnically diverse societies. Two important questions are: Why does ethnicity become politicized in some elections, but not in others? and Why do particular ethnic categories become politicized, while others do not? Two arguments in the literature offer explanations. The first argument posits that groups are mobilized along ethnic lines when voters have strong emotional allegiances to their ethnic group; in effect, the ethnic politicization of elections is viewed as a reflection of societal ethnic cleavages. A second argument focuses on …

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The Worship Of Semar: A Claim To "Jus Primordialis", Margaret Chan Aug 2014

The Worship Of Semar: A Claim To "Jus Primordialis", Margaret Chan

Research Collection School of Social Sciences

An ethnography of Paguyuban Cahya Buwana (PCB, The Community of the Light of the Universe) at Gunong Srandil, Central Java, a group dedicated to the worship of Semar. The study reveals how a community of Chinese in Central Java has moved beyond limiting ethnic notions such as Peranakan (Chinese born in Indonesia and adopting Indonesian language) and Totok (“newly-arrived” and retaining the Chinese language) to become entirely Javanese through entry into Kejawen (“Javanism”). This entry has been effected through their worship of Semar who has been described as the “father” of the Javanese.

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A Paradoxical Approach To Policymaking, David Chan Aug 2014

A Paradoxical Approach To Policymaking, David Chan

Research Collection School of Social Sciences

In an invited commentary, SMU Behavioural Sciences Institute Director Professor David Chan discussed the tensions between Singapore’s goals to become a global city and maintain national solidarity. Building on Prime Minister Lee Hsien Loong’s recent speech in London which emphasised that Singapore “must get the balance just right”, Professor Chan noted the limitations of adopting a “give-and-take” mindset to the city-country paradox. He suggested several strategic principles for dynamic balancing between city and country goals. He provided the example of building Singapore’s cultural capital and policy adaptations to illustrate the issues.

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Challenges In The Enforcement Of Animal Protection Laws In Singapore, Alvin W. L. See Aug 2014

Challenges In The Enforcement Of Animal Protection Laws In Singapore, Alvin W. L. See

Research Collection Yong Pung How School Of Law

Singapore has fairly powerful animal protection laws. In practice, however, these laws are only powerful to the extent that they are actually enforced. In Singapore, the low number of prosecutions for animal cruelty is a cause for serious concern. While there can be a myriad of reasons for this phenomenon, this paper argues that one primary cause is the insufficient understanding of what amounts, or may amount, to cruelty at law. This results in an unsound enforcement policy which reduces the protection afforded to animals. By highlighting this problem, this paper hopes to draw attention to the importance of the …

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Mediated Postnuptial Agreements And Ancillary Matters, Siyuan Chen Aug 2014

Mediated Postnuptial Agreements And Ancillary Matters, Siyuan Chen

Research Collection Yong Pung How School Of Law

When the parties in a divorce have, with the benefit of legal counsel, gone through mediation and negotiated an agreement to settle the ancillary issues of maintenance and the division of matrimonial assets, is there any reason for the court to exercise its statutorily conferred discretion to ignore such an agreement or should it seek to uphold it despite objections from one of the parties? Whereas the High Court in this case declined to follow all of the terms in the agreement on the ground that some of them were not just and equitable, the Court of Appeal held that …

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An Overview Of The Impending Changes In The Family Justice Landscape, Siyuan Chen Aug 2014

An Overview Of The Impending Changes In The Family Justice Landscape, Siyuan Chen

Research Collection Yong Pung How School Of Law

Singapore’s family justice landscape is set to witness a sea-change when the key features of the new Family Justice Act, as well as recommendations from the Committee for Family Justice (chaired by the Senior Minister of State for Law and Education, Justice VK Rajah, and Justice Andrew Phang), materialise in the months ahead.

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Overview Of The Impending Changes In The Family Justice Landscape, Siyuan Chen Aug 2014

Overview Of The Impending Changes In The Family Justice Landscape, Siyuan Chen

Research Collection Yong Pung How School Of Law

Singapore’s family justice landscape is set to witness a sea-change when the key features of the new Family Justice Act, as well as recommendations from the Committee for Family Justice (chaired by the Senior Minister of State for Law and Education, Justice VK Rajah, and Justice Andrew Phang), materialise in the months ahead.

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How To Boost Spain’S Business Presence In Singapore: Opportunities In The Wake Of The Free Trade Agreement With The Eu, Maria Garcia, Clara Portela Aug 2014

How To Boost Spain’S Business Presence In Singapore: Opportunities In The Wake Of The Free Trade Agreement With The Eu, Maria Garcia, Clara Portela

Research Collection School of Social Sciences

The recently signed Free Trade Agreement between the EU and Singapore opens up new business opportunities for Spanish companies on the island, which is already Spain’s top trading partner in South-East Asia. One highlight of the accord is the elimination of restrictions on the percentage of foreign investment in financial services and sectors such telecommunications, engineering and shipping. At the same time, the possibility of being able to bid on more government contracts can help companies involved in environmental protection and construction firms. The food industry will benefit from the novel creation of a registry of geographical indications.

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Wage A Measured Battle Against The Bottle, Tan K. B. Eugene Aug 2014

Wage A Measured Battle Against The Bottle, Tan K. B. Eugene

Research Collection Yong Pung How School Of Law

In a commentary, SMU Associate Professor of Law and Nominated Member of Parliament Eugene Tan believed that there are legitimate and pressing concerns to justify the close scrutiny of the existing regime on alcohol sale and consumption. He felt that the authorities could leverage market research data to understand the drinking culture and norms here and generate nuanced regulatory responses to alcohol sale and consumption. The insights gleaned from such research could aid our understanding of the dynamics of the drinking culture here. Associate Prof Tan added that the key policy challenge in the review process is to tackle the …

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Bayesian Testing Volatility Persistence In Stochastic Volatility Models With Jumps, Xiaobin Liu, Yong Li Aug 2014

Bayesian Testing Volatility Persistence In Stochastic Volatility Models With Jumps, Xiaobin Liu, Yong Li

Research Collection School Of Economics

Whether or not there is a unit root persistence in volatility of financial assets has been a long-standing topic of interest to financial econometricians and empirical economists. The purpose of this article is to provide a Bayesian approach for testing the volatility persistence in the context of stochastic volatility with Merton jump and correlated Merton jump. The Shanghai Composite Index daily return data is used for empirical illustration. The result of Bayesian hypothesis testing strongly indicates that the volatility process doesn’t have unit root volatility persistence in this stock market.

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Econometric Analysis Of Continuous Time Models: A Survey Of Peter Phillips' Work And Some New Results, Jun Yu Aug 2014

Econometric Analysis Of Continuous Time Models: A Survey Of Peter Phillips' Work And Some New Results, Jun Yu

Research Collection School Of Economics

Econometric analysis of continuous time models has drawn the attention of Peter Phillips for 40 years, resulting in many important publications by him. In these publications he has dealt with a wide range of continuous time models and the associated econometric problems. He has investigated problems from univariate equations to systems of equations, from asymptotic theory to finite sample issues, from parametric models to nonparametric models, from identification problems to estimation and inference problems, from stationary models to nonstationary and nearly nonstationary models. This paper provides an overview of Peter Phillips' contributions in the continuous time econometrics literature. We review …

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Robustify Financial Time Series Forecasting With Bagging, Sainan Jin, Liangjun Su, Aman Ullah Aug 2014

Robustify Financial Time Series Forecasting With Bagging, Sainan Jin, Liangjun Su, Aman Ullah

Research Collection School Of Economics

In this paper we propose a revised version of (bagging) bootstrap aggregating as a forecast combination method for the out-of-sample forecasts in time series models. The revised version explicitly takes into account the dependence in time series data and can be used to justify the validity of bagging in the reduction of mean squared forecast error when compared with the unbagged forecasts. Monte Carlo simulations show that the new method works quite well and outperforms the traditional one-step-ahead linear forecast as well as the nonparametric forecast in general, especially when the in-sample estimation period is small. We also find that …

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Specification Test For Panel Data Models With Interactive Fixed Effects, Liangjun Su, Sainan Jin, Yonghui Zhang Aug 2014

Specification Test For Panel Data Models With Interactive Fixed Effects, Liangjun Su, Sainan Jin, Yonghui Zhang

Research Collection School Of Economics

In this paper, we propose a consistent nonparametric test for linearity in a large dimensional panel data model with interactive fixed effects. Both lagged dependent variables and conditional heteroskedasticity of unknown form are allowed in the model. We estimate the model under the null hypothesis of linearity to obtain the restricted residuals which are then used to construct the test statistic. We show that after being appropriately centered and standardized, the test statistic is asymptotically normally distributed under both the null hypothesis and a sequence of Pitman local alternatives by using the concept of conditional strong mixing that was recently …

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Jackknife Model Averaging For Quantile Regressions, Xun Lu, Liangjun Su Aug 2014

Jackknife Model Averaging For Quantile Regressions, Xun Lu, Liangjun Su

Research Collection School Of Economics

In this paper, we consider the problem of frequentist model averaging for quantile regression (QR) when all the M models under investigation are potentially misspecified and the number of parameters in some or all models is diverging with the sample size n. To allow for the dependence between the error terms and the regressors in the QR models, we propose a jackknife model averaging (JMA) estimator which selects the weights by minimizing a leave-one-out cross-validation criterion function and demonstrate that the jackknife selected weight vector is asymptotically optimal in terms of minimizing the out-of-sample final prediction error among the given …

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Identifying Latent Structures In Panel Data, Liangjun Su, Zhentao Shi, Peter C. B. Phillips Aug 2014

Identifying Latent Structures In Panel Data, Liangjun Su, Zhentao Shi, Peter C. B. Phillips

Research Collection School Of Economics

This paper provides a novel mechanism for identifying and estimating latent group structures in panel data using penalized regression techniques. We focus on linear models where the slope parameters are heterogeneous across groups but homogenous within a group and the group membership is unknown. Two approaches are considered — penalized least squares (PLS) for models without endogenous regressors, and penalized GMM (PGMM) for models with endogeneity. In both cases we develop a new variant of Lasso called classifier-Lasso (C-Lasso) that serves to shrink individual coefficients to the unknown group-specific coefficients. C-Lasso achieves simultaneous classification and consistent estimation in a single …

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Unilateral Emissions Mitigation, Spillovers, And Global Learning, Shurojit Chatterji, Sayantan Ghosal, Sean Walsh, John Whalley Aug 2014

Unilateral Emissions Mitigation, Spillovers, And Global Learning, Shurojit Chatterji, Sayantan Ghosal, Sean Walsh, John Whalley

Research Collection School Of Economics

What's the role of unilateral measures in global climate change mitigation in a post-Durban, post 2012 global policy regime? We argue that under conditions of preference heterogeneity, unilateral emissions mitigation at a subnational level may exist even when a nation is unwilling to commit to emission cuts. We establish that under certain assumptions, in a global strongly connected network of countries, learning the costs of switching to a low emissions activity can result in a universal adoption of such activities. We analyze the features of a policy proposal that could accelerate convergence to a low carbon world in the presence …

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A Flexible And Automated Likelihood Based Framework For Inference In Stochastic Volatility Models, Hans J. Skaug, Jun Yu Aug 2014

A Flexible And Automated Likelihood Based Framework For Inference In Stochastic Volatility Models, Hans J. Skaug, Jun Yu

Research Collection School Of Economics

The Laplace approximation is used to perform maximum likelihood estimation of univariate and multivariate stochastic volatility (SV) models. It is shown that the implementation of the Laplace approximation is greatly simplified by the use of a numerical technique known as automatic differentiation (AD). Several algorithms are proposed and compared with some existing maximum likelihood methods using both simulated data and actual data. It is found that the new methods match the statistical efficiency of the existing methods while significantly reducing the coding effort. Also proposed are simple methods for obtaining the filtered, smoothed and predictive values for the latent variable. …

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Minimum Investment Requirements, Financial Market Globalization, And Symmetry Breaking, Haiping Zhang Aug 2014

Minimum Investment Requirements, Financial Market Globalization, And Symmetry Breaking, Haiping Zhang

Research Collection School Of Economics

We incorporate wealth heterogeneity and the minimum investment requirements in the model of Matsuyama (2004, Econometrica) and provide a complete characterization of symmetry breaking. In particular, we identify the extensive margin of investment as a key channel through which the interest rate may respond positively to capital accumulation, or equivalently, the interest rate can be higher in the rich than in the poor countries. Then, financial market globalization may lead to “uphill” capital flows from the poor to the rich countries, which widens the initial cross-country income gap and leads to income divergence among inherently identical countries, a phenomenon that …

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Assessing Market Failures In Export Pioneering Activities: A Structural Estimation Approach, Shang-Jin Wei, Ziru Wei, Jianhuan Xu Aug 2014

Assessing Market Failures In Export Pioneering Activities: A Structural Estimation Approach, Shang-Jin Wei, Ziru Wei, Jianhuan Xu

Research Collection School Of Economics

The paper provides a first structural-estimation-based assessment of an influential hypothesis that export pioneers are too few relative to social optimum due to knowledge spillover in new market explorations. Such market failure requires two inequalities to hold simultaneously: the discovery cost is greater than any individual firm’s expected profit but Smaller than the sum of all potential exporters’ expected profits. Neither has to hold in the data. We estimate the structural parameters based on the customs data of Chinese electronics exports. While we find positive discover cost and spillovers, "missing pioneers" are nonetheless a low probability event.

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Unit Roots In Life: A Graduate Student Story, Peter C. B. Phillips Aug 2014

Unit Roots In Life: A Graduate Student Story, Peter C. B. Phillips

Research Collection School Of Economics

What follows is a graduate student story. It draws on the first part of the speech I gave that evening at the NZESG conference dinner. It mixes personal reflections with recollections of the extraordinary New Zealanders who shaped my thinking as a graduate student and beginning researcher-people who have had an enduring impact on my work and career as an econometrician. The story traces out these human initial conditions and unit roots that figure in my early life of teaching and research.

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Nonlinearity Induced Weak Instrumentation, Ioannis Kasparis, Peter C. B. Phillips, Tassos Magdalinos Aug 2014

Nonlinearity Induced Weak Instrumentation, Ioannis Kasparis, Peter C. B. Phillips, Tassos Magdalinos

Research Collection School Of Economics

In regressions involving integrable functions we examine the limit properties of instrumental variable (IV) estimators that utilise integrable transformations of lagged regressors as instruments. The regressors can be either I(0) or nearly integrated (NI) processes. We show that this kind of nonlinearity in the regression function can significantly affect the relevance of the instruments. In particular, such instruments become weak when the signal of the regressor is strong, as it is in the NI case. Instruments based on integrable functions of lagged NI regressors display long range dependence and so remain relevant even at long lags, continuing to contribute to …

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Social Tipping Points And Earth Systems Dynamics, R.A. Bentley, E. Maddison, P. Ranner, J. Bissell, C. Caiado, P. Bhatanacharoen, Timothy Adrian Robert Clark, Botha M., Akinbami F., Hollow M., Michie R., Huntley B., Curtis S., Garnett P. Aug 2014

Social Tipping Points And Earth Systems Dynamics, R.A. Bentley, E. Maddison, P. Ranner, J. Bissell, C. Caiado, P. Bhatanacharoen, Timothy Adrian Robert Clark, Botha M., Akinbami F., Hollow M., Michie R., Huntley B., Curtis S., Garnett P.

Research Collection Lee Kong Chian School Of Business

Recently, Early Warning Signals (EWS) have been developed to predict tipping points in Earth Systems. This discussion highlights the potential to apply EWS to human social and economic systems, which may also undergo similar critical transitions. Social tipping points are particularly difficult to predict, however, and the current formulation of EWS, based on a physical system analogy, may be insufficient. As an alternative set of EWS for social systems, we join with other authors encouraging a focus on heterogeneity, connectivity through social networks and individual thresholds to change.

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