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Articles 6841 - 6870 of 9289

Full-Text Articles in Social and Behavioral Sciences

Strength In Adversity: The Influence Of Psychological Capital On Job Search, Don J. Q. Chen, Vivien K. G. Lim Aug 2012

Strength In Adversity: The Influence Of Psychological Capital On Job Search, Don J. Q. Chen, Vivien K. G. Lim

Research Collection Lee Kong Chian School Of Business

This study examined the influence of psychological capital on job search among displaced employees. On the basis of a sample of 179 retrenched professionals, managers, executives, and technicians, we found that psychological capital (self-efficacy, hope, optimism, and resilience) was positively related with displaced employees' level of perceived employability, a coping resource. Perceived employability was positively related with problem-focused and symptom-focused coping strategies. Whereas problem-focused coping was positively related with preparatory and active job search, symptom-focused coping strategy was not. The relationship between psychological capital and preparatory and active job search was mediated by perceived employability and problem-focused coping. Implications of …

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(Hidden) Social Influences In Switching Mobile Service Platforms, Virpi K. Tuunainen, Tuure Tuunanen, Fiona Fui-Hoon Nah Aug 2012

(Hidden) Social Influences In Switching Mobile Service Platforms, Virpi K. Tuunainen, Tuure Tuunanen, Fiona Fui-Hoon Nah

Research Collection School Of Computing and Information Systems

During the past few years, the mobile industry has gone through a radical change from business focusing on excellence in device manufacturing and supply chain management to ecosystems around successful focal players, such as Apple and Google, controlling these service platforms. In order to compete in this environment, these firms need to understand what makes a consumer switch between these mobile service platforms. To that end, we conducted an inductive qualitative study with university students from Finland and USA as subjects (142 altogether), delving into how and why consumers switch mobile phones, and what are the factors affecting their decisions. …

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Ovulation Leads Women To Perceive Sexy Cads As Good Dads, Kristina M. Durante, Vladas Griskevicius, Jeffry A. Simpson, Stephanie M. Canfu, Norman P. Li Aug 2012

Ovulation Leads Women To Perceive Sexy Cads As Good Dads, Kristina M. Durante, Vladas Griskevicius, Jeffry A. Simpson, Stephanie M. Canfu, Norman P. Li

Research Collection School of Social Sciences

Why do some women pursue relationships with men who are attractive, dominant, and charming but who do not want to be in relationships—the prototypical sexy cad? Previous research shows that women have an increased desire for such men when they are ovulating, but it is unclear why ovulating women would think it is wise to pursue men who may be unfaithful and could desert them. Using both college-age and community-based samples, in 3 studies we show that ovulating women perceive charismatic and physically attractive men, but not reliable and nice men, as more committed partners and more devoted future fathers. …

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The Geographies Of Religious Conversion, Orlando Woods Aug 2012

The Geographies Of Religious Conversion, Orlando Woods

Research Collection School of Social Sciences

The paper reviews the corpus of research that attempts to explain the process of religious conversion, and explores the ways in which geographers can add new perspectives to the discourse. It argues that religious conversion is a phenomenon that goes beyond the reorientation of individual belief, and is instead a process of change that involves the (re)definition of self and other. Five conceptual frames are proposed - (1) conversion of space; (2) spaces of conversion; (3) spaces of negotiation; (4) the (im)mobile convert; and (5) the (dis)embodied convert - which are used to help define the geographies of religious conversion.

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A Timely Look At Those ‘Other’ Issues, Tan K. B. Eugene Aug 2012

A Timely Look At Those ‘Other’ Issues, Tan K. B. Eugene

Research Collection Yong Pung How School Of Law

SMU Assistant Professor of Law and Nominated MP Eugene Tan wrote that there was something in the National Day Rally speech for different segments of Singaporeans. Furthermore, Prime Minister Lee Hsien Loong shared the presentation with three other government leaders, signalling a more inclusive style of leadership and encouraging openness to different perspectives.

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Detecting Bubbles In Hong Kong Residential Property Market, Matthew S. Yiu, Jun Yu, Lu Jin Aug 2012

Detecting Bubbles In Hong Kong Residential Property Market, Matthew S. Yiu, Jun Yu, Lu Jin

Research Collection School Of Economics

This study uses a newly developed bubble detection method (Phillips, Shi and Yu, 2011) to identify real estate bubbles in the Hong Kong residential property market. Our empirical results reveal several positive bubbles in the Hong Kong residential property market, including one in 1995, a stronger one in 1997, another one in 2004, and a more recent one in 2008. In addition, the method identifies two negative bubbles in the data, one in 2000 and the other one in 2001. These empirical results continue to be valid for the mass segment and the luxury segment. However, the method finds a …

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Robust Deviance Information Criterion For Latent Variable Models, Yong Li, Tao Zeng, Jun Yu Aug 2012

Robust Deviance Information Criterion For Latent Variable Models, Yong Li, Tao Zeng, Jun Yu

Research Collection School Of Economics

It is shown in this paper that the data augmentation technique undermines the theoretical underpinnings of the deviance information criterion (DIC), a widely used information criterion for Bayesian model comparison, although it facilitates parameter estimation for latent variable models via Markov chain Monte Carlo (MCMC) simulation. Data augmentation makes the likelihood function non-regular and hence invalidates the standard asymptotic arguments. A new information criterion, robust DIC (RDIC), is proposed for Bayesian comparison of latent variable models. RDIC is shown to be a good approximation to DIC without data augmentation. While the later quantity is difficult to compute, the expectation { …

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Recent Advances In Nonstationary Time Series: A Festschrift In Honor Of Peter C. B. Phillips, Robert S. Mariano, Zhijie Xiao, Jun Yu Aug 2012

Recent Advances In Nonstationary Time Series: A Festschrift In Honor Of Peter C. B. Phillips, Robert S. Mariano, Zhijie Xiao, Jun Yu

Research Collection School Of Economics

On July 14–15, 2008, the School of Economics and the Sim Kee Boon Institute for Financial Economics at Singapore Management University (SMU) co-hosted a conference honoring the contribution of Peter Phillips to econometrics and statistics, in celebration of his 60th birthday. In total, 51 papers were presented by his colleagues and former students, who deeply appreciate and respect Peter as a true scholar and a good friend. These papers mainly cover two areas of Peter’s current research interests—nonstationary time series analysis, and panel, nonlinear and nonparametric models. On the basis of this conference, we have taken the opportunity to edit …

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Mean And Autocovariance Function Estimation Near The Boundary Of Stationarity, Liudas Giraitis, Peter C. B. Phillips Aug 2012

Mean And Autocovariance Function Estimation Near The Boundary Of Stationarity, Liudas Giraitis, Peter C. B. Phillips

Research Collection School Of Economics

We analyze the applicability of standard normal asymptotic theory for linear process models near the boundary of stationarity. Limit results are given for estimation of the mean, autocovariance and autocorrelation functions within the broad region of stationarity that includes near boundary cases which vary with the sample size. The rate of consistency and the validity of the normal asymptotic approximation for the corresponding estimators is determined both by the sample size n and a parameter measuring the proximity of the model to the unit root boundary. (C) 2012 Elsevier B.V. All rights reserved.

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The Better-Than-Average Effect In Hong Kong And The United States: The Role Of Personal Trait Importance And Cultural Trait Importance, Kim-Pong Tam, Angela K. Y. Leung, Young-Hoon Kim, Chi-Yue Chiu, Ivy Yee-Man Lau, Al K. C. Au Aug 2012

The Better-Than-Average Effect In Hong Kong And The United States: The Role Of Personal Trait Importance And Cultural Trait Importance, Kim-Pong Tam, Angela K. Y. Leung, Young-Hoon Kim, Chi-Yue Chiu, Ivy Yee-Man Lau, Al K. C. Au

Research Collection School of Social Sciences

People tend to make self-aggrandizing social comparisons on traits that are important to the self. However, existing research on the better-than-average effect (BTAE) and trait importance does not distinguish between personal trait importance (participants’ ratings of the importance of certain traits to themselves) and cultural trait importance (participants’ perceptions of the importance of the traits to the cultural group to which they belong). We demonstrated the utility of this distinction by examining the joint effects of personal importance and cultural importance on the BTAE among Hong Kong Chinese and American participants. Results showed that the BTAE was more pronounced for …

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Optimal Estimation Under Nonstandard Conditions, Werner Ploberger, Peter C. B. Phillips Aug 2012

Optimal Estimation Under Nonstandard Conditions, Werner Ploberger, Peter C. B. Phillips

Research Collection School Of Economics

We analyze optimality properties of maximum likelihood (ML) and other estimators when the problem does not necessarily fall within the locally asymptotically normal (LAN) class, therefore covering cases that are excluded from conventional LAN theory such as unit root nonstationary time series. The classical Hajek-Le Cam optimality theory is adapted to cover this situation. We show that the expectation of certain monotone "bowl-shaped" functions of the squared estimation error are minimized by the ML estimator in locally asymptotically quadratic situations, which often occur in nonstationary time series analysis when the LAN property fails. Moreover, we demonstrate a direct connection between …

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Lope De Aguirre, The Tyrant, And The Prince: Convergence And Divergence In Postcolonial Collective Memory, Jennifer Kate Estava Davis Jul 2012

Lope De Aguirre, The Tyrant, And The Prince: Convergence And Divergence In Postcolonial Collective Memory, Jennifer Kate Estava Davis

Research Collection Centre for English Communication

In Latin America, collective remembering is shaped by stories of colonizers whose voracious ambitions left an indelible mark on the landscape and its people. This essay examines a set of narratives about a legendary colonizer, Lope de Aguirre, that continue to be invoked in the collective imagination on the island of Margarita, in Venezuela. Drawing on Bormann’s Symbolic Convergence Theory and Bakhtin’s work on cultural discourse, this analysis shows that on the one hand, the narratives converge to support official records of Aguirre as an archetype of colonial brutality. Yet on the other, alternate versions of the stories reveal a …

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Detecting Anomalous Twitter Users By Extreme Group Behaviors, Hanbo Dai, Ee-Peng Lim, Feida Zhu, Hwee Hwa Pang Jul 2012

Detecting Anomalous Twitter Users By Extreme Group Behaviors, Hanbo Dai, Ee-Peng Lim, Feida Zhu, Hwee Hwa Pang

Research Collection School Of Computing and Information Systems

Twitter has enjoyed tremendous popularity in the recent years. To help categorizing and search tweets, Twitter users assign hashtags to their tweets. Given that hashtag assignment is the primary way to semantically categorizing and search tweets, it is highly susceptible to abuse by spammers and other anomalous users [1]. Popular hashtags such as #Obama and #ladygaga could be hijacked by having them added to unrelated tweets with the intent of misleading many other users or promoting specific agenda to the users. The users performing this act are known as the hashtag hijackers. As the hijackers usually abuse common sets of …

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Topic Discovery From Tweet Replies, Bingtian Dai, Ee Peng Lim, Philips Kokoh Prasetyo Jul 2012

Topic Discovery From Tweet Replies, Bingtian Dai, Ee Peng Lim, Philips Kokoh Prasetyo

Research Collection School Of Computing and Information Systems

Twitter is a popular online social information network service which allows people to read and post messages up to 140 characters, known as “tweets”. In this paper, we focus on the tweets between pairs of individuals, i.e., the tweet replies, and propose a generative model to discover topics among groups of twitter users. Our model has then been evaluated with a tweet dataset to show its effectiveness.

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Finding Bursty Topics From Microblogs, Qiming Diao, Jing Jiang, Feida Zhu, Ee Peng Lim Jul 2012

Finding Bursty Topics From Microblogs, Qiming Diao, Jing Jiang, Feida Zhu, Ee Peng Lim

Research Collection School Of Computing and Information Systems

Microblogs such as Twitter reflect the general public’s reactions to major events. Bursty topics from microblogs reveal what events have attracted the most online attention. Although bursty event detection from text streams has been studied before, previous work may not be suitable for microblogs because compared with other text streams such as news articles and scientific publications, microblog posts are particularly diverse and noisy. To find topics that have bursty patterns on microblogs, we propose a topic model that simultaneousy captures two observations: (1) posts published around the same time are more likely to have the same topic, and (2) …

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Clustered Subsampling For Clinically Informed Diagnostic Brain Mapping, Malin Björnsdotter, Diego Sona, Sonny Rosenthal, Justin Dauwels Jul 2012

Clustered Subsampling For Clinically Informed Diagnostic Brain Mapping, Malin Björnsdotter, Diego Sona, Sonny Rosenthal, Justin Dauwels

Research Collection College of Integrative Studies

Brain based diagnostic systems have recently received attention as a tool in the characterization and diagnosis of a variety of neurodevelopmental and psychiatric disorders. Nonetheless, a majority of disorders are still diagnosed entirely based on symptom assessments and behavioral correlates. We therefore propose a method for fusing brain responses with clinical measures for improved diagnosis. To this end, we utilized the flexibility of clustered random subspace brain mapping to detect regions where brain responses in conjunction with a clinical measure could reliably differentiate patients from control subjects. We demonstrate the approach on realistically simulated functional magnetic resonance imaging (fMRI) brain …

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Coalitions And Language Politics: Policy Shifts In Southeast Asia, Amy H. Liu, Jacob I. Ricks Jul 2012

Coalitions And Language Politics: Policy Shifts In Southeast Asia, Amy H. Liu, Jacob I. Ricks

Research Collection School of Social Sciences

Why is it that some governments recognize only one language while others espouse multilingualism? Related, why are some governments able to shift language policies, and if there is a shift, what explains the direction? In this article, the authors argue that these choices are theproduct of coalitional constraints facing the government during critical junctures in history. During times of political change in the state-building process, the effective threat of an alternate linguistic group determines the emergent language policy. If the threat is low, the government moves toward monolingual policies. As the threat increases, however, the government is forced to co-opt …

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Global Entrepreneurship Monitor 2011 Singapore Report, Olexander S. Chernyshenko, David Gomulya, Wei Ming J. Phan, Yoke Yong Lai, Moon-Ho R. Ho, Marilyn A. Uy, Kim Yan Chan, Olwen Bedford Jul 2012

Global Entrepreneurship Monitor 2011 Singapore Report, Olexander S. Chernyshenko, David Gomulya, Wei Ming J. Phan, Yoke Yong Lai, Moon-Ho R. Ho, Marilyn A. Uy, Kim Yan Chan, Olwen Bedford

Research Collection Lee Kong Chian School Of Business

Independent of the stage of economic development, entrepreneurship plays a significant role for the expansion, job creation and overall economic health within a country. As a leading international indicator of entrepreneurial activity around the world, the Global Entrepreneurship Monitor (GEM) provides valuable insight into the state of entrepreneurship within and across developed and developing economies. Knowing the entrepreneurial aspirations of country’s residents is particularly relevant in Singapore’s innovation-driven economy given that the country’s prosperity depends largely on the economic activities of its citizens. We describe the key definitions and terms used in the GEM as well as the stages of …

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Real-Time Road Traffic Forecasting Using Regime-Switching Space-Time Models And Adaptive Lasso, Yiannis Kamarianakis, Wei Shen, Laura Wynter Jul 2012

Real-Time Road Traffic Forecasting Using Regime-Switching Space-Time Models And Adaptive Lasso, Yiannis Kamarianakis, Wei Shen, Laura Wynter

Research Collection School Of Computing and Information Systems

Smart transportation technologies require real-time traffic prediction to be both fast and scalable to full urban networks. We discuss a method that is able to meet this challenge while accounting for nonlinear traffic dynamics and space-time dependencies of traffic variables. Nonlinearity is taken into account by a union of non-overlapping linear regimes characterized by a sequence of temporal thresholds. In each regime, for each measurement location, a penalized estimation scheme, namely the adaptive absolute shrinkage and selection operator (LASSO), is implemented to perform model selection and coefficient estimation simultaneously. Both the robust to outliers least absolute deviation estimates and conventional …

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Rejoinder: Real-Time Road Traffic Forecasting Using Regime-Switching Space-Time Models And Adaptive Lasso, Yiannis Kamarianakis, Wei Shen, Laura Wynter Jul 2012

Rejoinder: Real-Time Road Traffic Forecasting Using Regime-Switching Space-Time Models And Adaptive Lasso, Yiannis Kamarianakis, Wei Shen, Laura Wynter

Research Collection School Of Computing and Information Systems

Kamarianakis et al. presented a promising application of multivariate time series analysis to the traffic condition forecasting problem in urban transportation networks. Interest is keen and growing in providing accurate predictions of link and route travel conditions, especially in the context of the burgeoning demand for ‘real-time’ traveler information. Forecasts underlying this information must be sufficiently accurate for the traveler information provided to be of tangible value. As the authors clearly pointed out, although the near ubiquitous availability of urban traffic condition data makes area-wide forecasts theoretically possible, scalability to area-wide networks and the required speed of forecast generation represent …

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Contract Law, Chee Ho Tham, Pey Woan Lee, Yihan Goh Jul 2012

Contract Law, Chee Ho Tham, Pey Woan Lee, Yihan Goh

Research Collection Yong Pung How School Of Law

No abstract provided.

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Cash In Hand, Want Better Looking Mate: Significant Resource Cues Raise Reported Mating Standards In Men, Jose C. Yong, Norman P. Li Jul 2012

Cash In Hand, Want Better Looking Mate: Significant Resource Cues Raise Reported Mating Standards In Men, Jose C. Yong, Norman P. Li

Research Collection School of Social Sciences

Resources are a cardinal component of male mate value in the sexual exchange between men and women. Inspired by theories and research suggesting a link between mating and resource constructs as well as studies linking money and valuations of others, the current study tests the hypothesis that cues to resource availability may lead to higher mating standards for men, but not women. Participants were exposed to either stacks of paper, a small sum of money (104 Singapore dollars ~USD$84), or a large sum of money (2600 Singapore dollars ~USD$2100). Consistent with the hypothesis, after male – but not female – …

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Bias In The Estimation Of The Mean Reversion Parameter In Continuous Time Models, Jun Yu Jul 2012

Bias In The Estimation Of The Mean Reversion Parameter In Continuous Time Models, Jun Yu

Research Collection School Of Economics

It is well known that for continuous time models with a linear drift standard estimation methods yield biased estimators for the mean reversion parameter both in finite discrete samples and in large in-fill samples. In this paper, we obtain two expressions to approximate the bias of the least squares/maximum likelihood estimator of the mean reversion parameter in the Ornstein-Uhlenbeck process with a known long run mean when discretely sampled data are available. The first expression mimics the bias formula of Marriott and Pope (1954) for the discrete time model. Simulations show that this expression does not work satisfactorily when the …

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Collaborating Across Cultures: Cultural Metacognition And Affect-Based Trust In Creative Collaboration, Roy Y. J. Chua, Michael W. Morris, Shira Mor Jul 2012

Collaborating Across Cultures: Cultural Metacognition And Affect-Based Trust In Creative Collaboration, Roy Y. J. Chua, Michael W. Morris, Shira Mor

Research Collection Lee Kong Chian School Of Business

We propose that managers adept at thinking about their cultural assumptions (cultural metacognition) are more likely than others to develop affect-based trust in their relationships with people from different cultures, enabling creative collaboration. Study 1, a multi-rater assessment of managerial performance, found that managers higher in metacognitive cultural intelligence (CQ) were rated as more effective in intercultural creative collaboration by managers from other cultures. Study 2, a social network survey, found that managers lower in metacognitive CQ engaged in less sharing of new ideas in their intercultural ties but not intracultural ties. Study 3 required participants to work collaboratively with …

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Country Image And International Trade, Pao Li Chang, Tomoki Fujii Jul 2012

Country Image And International Trade, Pao Li Chang, Tomoki Fujii

Research Collection School Of Economics

We study the impact of country image on international trade flows. We find that a one percentage point increase in the positive response ratio - the proportion of people in the importing country who view the exporting country positively - is associated with at least a one percent increase in the aggregate trade flow. By disaggregating trade flows by the type of goods, we also find that both homogeneous and differentiated goods are positively affected by better country image and that the impact of country image tends to be larger when more substitutes are available in the international market.

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Why Smes Should Aim At Becoming Exporters, Hian Teck Hoon Jul 2012

Why Smes Should Aim At Becoming Exporters, Hian Teck Hoon

Research Collection School Of Economics

In the fortnightly series entitled 'Engage SMU profs', Professor Hoon Hian Teck, Associate Dean of the School of Economics, answers the questions: Should SMEs aim to become exporters rather than serve only the domestic market? What are the benefits to SMEs in doing so? Does the smallness in size limit their productivity growth? Are there any channels for SMEs to get assistance from the authorities, and what are these? He commented that if more of our local SMEs look towards the international marketplace and sell to foreign markets, not only will Singapore's GDP be boosted, local businessmen will also get …

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Growth And Inequality In Singapore, Kong Weng Ho Jul 2012

Growth And Inequality In Singapore, Kong Weng Ho

Research Collection School Of Economics

While the strategy of openness had earned Singapore rapid economic growth, upward social mobility, and possibly decreasing inequality in the early years of development, the more recent years saw increasing inequality and with it an underlying possibly diminished upward intergenerational mobility due to skill-biased growth processes, skill-biased parental influence, liberalization in the education industry, and structural changes in the society which hurt the human capital accumulation of children in families under economic and intra-household stresses. In particular, the paternal influence on educational aspiration and attainment is more pronounced than the mother’s. Non-Chinese and youths from disrupted families are worse off …

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Singapore Business And The Gulf: Un Tour D’Horizon, Caroline Yeoh, Wilfred How Jul 2012

Singapore Business And The Gulf: Un Tour D’Horizon, Caroline Yeoh, Wilfred How

Research Collection Lee Kong Chian School Of Business

Never more newsworthy in business circles has been the Gulf Region than in recent decades; from the region's vast economic strength and meteoric development, to the events of the financial crisis and the ongoing 'Arab spring'. A rich environment in every way – business, cultural, and socio-political – the countries of the Gulf Co-operation Council (GCC) provide a fascinating subject for academic study from a wealth of perspectives. Some of these perspectives are well-explored; others, markedly less so, the business dimension of this unique and complicated market regrettably among them. While a favored subject of our own research, the comparative …

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Not A Partnership In Pepper, Coffee, Callico, Or Tobacco: Edmund Burke And The Vicissitudes Of Colonial Capitalism, Onur Ulas Ince Jul 2012

Not A Partnership In Pepper, Coffee, Callico, Or Tobacco: Edmund Burke And The Vicissitudes Of Colonial Capitalism, Onur Ulas Ince

Research Collection School of Social Sciences

This essay examines the tensions between liberalism and capitalism through an analysis of Edmund Burke's works on eighteenth-century liberal political economy and, specifically the challenges posed by colonial capitalism. When criticizing the East India Company Burke attempted to fortify "commercial" principles, on which British self-image rested, against the "rapacious" policies of British imperialism in India, which threatened this liberal self-image. His denunciation of the Company thus can be construed as an index to broader contradictions between the liberal self-image of capitalism and the coercive processes of colonial displacement and extraction that were an integral part of capitalism's emergence. The article, …

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Statistical Tests For Multiple Forecast Comparison, Roberto Mariano, Daniel P. A. Preve Jul 2012

Statistical Tests For Multiple Forecast Comparison, Roberto Mariano, Daniel P. A. Preve

Research Collection School Of Economics

We consider a multivariate version of the Diebold–Mariano test for equal predictive ability of three or more forecasting models. The Wald-type test, S, which has a null distribution that is asymptotically chi-squared, is shown to be generally invariant with respect to the ordering of the models being compared. Finite-sample corrections for the test are also developed. Monte Carlo simulations indicate that S has reasonable size properties in large samples but tends to be oversized in moderate samples. The finite-sample correction succeeds in correcting for size, but only partially. For the size-adjusted tests, power increases with sample size, as expected. It …

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