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Articles 6271 - 6300 of 8026

Full-Text Articles in Social and Behavioral Sciences

Asymptotic Distributions Of The Least Squares Estimator For Diffusion Processes, Qiankun Zhou, Jun Yu Oct 2010

Asymptotic Distributions Of The Least Squares Estimator For Diffusion Processes, Qiankun Zhou, Jun Yu

Research Collection School Of Economics

The asymptotic distributions of the least squares estimator of the mean reversion parameter (κ) are developed in a general class of diffusion models under three sampling schemes, namely, ongspan, in-fill and the combination of long-span and in-fill. The models have an affine structure in the drift function, but allow for nonlinearity in the diffusion function. The limiting distributions are quite different under the alternative sampling schemes. In particular, the in-fill limiting distribution is non-standard and depends on the initial condition and the time span whereas the other two are Gaussian. Moreover, while the other two distributions are discontinuous at κ …

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A New Bayesian Unit Root Test In Stochastic Volatility Models, Yong Li, Jun Yu Oct 2010

A New Bayesian Unit Root Test In Stochastic Volatility Models, Yong Li, Jun Yu

Research Collection School Of Economics

A new posterior odds analysis is proposed to test for a unit root in volatility dynamics in the context of stochastic volatility models. This analysis extends the Bayesian unit root test of So and Li (1999, Journal of Business Economic Statistics) in two important ways. First, a numerically more stable algorithm is introduced to compute the Bayes factor, taking into account the special structure of the competing models. Owing to its numerical stability, the algorithm overcomes the problem of diverged “size” in the marginal likelihood approach. Second, to improve the “power” of the unit root test, a mixed prior specification …

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Bias-Corrected Estimation For Spatial Autocorrelation, Zhenlin Yang Oct 2010

Bias-Corrected Estimation For Spatial Autocorrelation, Zhenlin Yang

Research Collection School Of Economics

The biasedness issue arising from the maximum likelihood estimation of the spatial autoregressive model (SAR) is further investigated under a broader set-up than that in Bao and Ullah (2007a). A major difficulty in analytically evaluating the expectations of ratios of quadratic forms is overcome by a simple bootstrap procedure. With that, the corrections on bias and variance of the spatial estimator can easily be made up to third-order, and once this is done, the estimators of other model parameters become nearly unbiased. Compared with the analytical approach, the new approach is much simpler, and can easily be extended to other …

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Macroeconomic Effects Of Over-Investment In Housing In An Aggregative Model Of Economic Activity, Hian Teck Hoon Oct 2010

Macroeconomic Effects Of Over-Investment In Housing In An Aggregative Model Of Economic Activity, Hian Teck Hoon

Research Collection School Of Economics

Is there a theoretical basis for the view that the end of a period of over-investment necessarily leads to a period of below-normal employment as the excess capital stock is run down? We study the repercussions of a false boom in housing driven by prior expectations of future housing prices not justified by fundamentals. When these expectations are corrected, the result is a precipitous drop in housing prices and, on that account alone, some drop in employment. There is also a bulge in the housing stock. In the case of a closed economy, the downward shift of the term structure …

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Sun Yat Sen, A S’Pore Icon? Hardly, Tan K. B. Eugene Oct 2010

Sun Yat Sen, A S’Pore Icon? Hardly, Tan K. B. Eugene

Research Collection Yong Pung How School Of Law

Assistant Professor of Law Eugene Tan discusses if we are unwittingly overemphasising the role of the ethnic Chinese in Singapore's path to nationhood.

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Customer Satisfaction Index Of Singapore 2010: Q3 Results, Customer Satisfaction Index Of Singapore 2010: Full Year Overview Oct 2010

Customer Satisfaction Index Of Singapore 2010: Q3 Results, Customer Satisfaction Index Of Singapore 2010: Full Year Overview

Research Collection Institute of Service Excellence (2007-2024)

Following the release of CSISG results for the Retail, InfoCommunications, Transportation & Logistics, and Education sectors in the first two quarters of 2010, the current third quarter release of results are of the Food & Beverage (F&B) and Tourism, Hotels & Accommodation Services (THAS) sectors. CSISG results of the final two economic sectors for 2010, the Finance and Healthcare sectors, is scheduled to be released in January 2011, together with the 2010 national score. CSISG company scores are based on face-to-face interviews with end users of companies’ products and services. Sub-sector scores are derived as a weighted average of company …

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Wsm'10: Second Acm Workshop On Social Media, Susanne Boll, Steven C. H. Hoi, Roelof Van Zwol, Jiebo Luo Oct 2010

Wsm'10: Second Acm Workshop On Social Media, Susanne Boll, Steven C. H. Hoi, Roelof Van Zwol, Jiebo Luo

Research Collection School Of Computing and Information Systems

The ACM SIGMM International Workshop on Social Media (WSM'10) is the second workshop held in conjunction with the ACM International Multimedia Conference (MM'10) at Firenze, Italy, 2010. This workshop provides a forum for researchers and practitioners from all over the world to share information on their latest investigations on social media analysis, exploration, search, mining, and emerging new social media applications.

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Standardized Lm Tests For Spatial Error Dependence In Linear Or Panel Regressions, Badi H. Baltagi, Zhenlin Yang Oct 2010

Standardized Lm Tests For Spatial Error Dependence In Linear Or Panel Regressions, Badi H. Baltagi, Zhenlin Yang

Research Collection School Of Economics

The robustness of the LM tests for spatial error dependence of Burridge (1980) for the linear regression model and Anselin (1988) for the panel regression model are examined. While both tests are asymptotic ally robust against distributional misspecification, their finite sample behavior can be sensitive to the spatial layout. To overcome this shortcoming, standardized LM tests are suggested. Monte Carlo results show that the new tests possess good finite sample properties. An important observation made throughout this study is that the LM tests for spatial dependence need to be both mean- and variance-adjusted for good finite sample performance to be …

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A Study Of Price Evolution In Online Toy Market, Zhenlin Yang, Lydia L Gan, Fang-Fang Tang Oct 2010

A Study Of Price Evolution In Online Toy Market, Zhenlin Yang, Lydia L Gan, Fang-Fang Tang

Research Collection School Of Economics

We study and contrast pricing and price evolution of online only (Dotcom) and online branch of multi-channel retailers (OBMCRs) based on two panel data sets collected from online toy markets. Panel data regression analyses reveal several interesting empirical results: over time, OBMCRs and Dotcoms charge similar prices on average but Dotcoms significantly increase their shipping costs that eventually drive the overall average price of Dotcoms higher than that of OBMCRs. Price dispersions of both types of retailers are persistent. The price dispersion of OBMCRs is higher than that of Dotcoms at the beginning and does not change much over time, …

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Bayesian Hypothesis Testing In Latent Variable Models, Yong Li, Jun Yu Oct 2010

Bayesian Hypothesis Testing In Latent Variable Models, Yong Li, Jun Yu

Research Collection School Of Economics

Hypothesis testing using Bayes factors (BFs) is known to suffer from several problems in the context of latent variable models. The first problem is computational. Another problem is that BFs are not well defined under the improper prior. In this paper, a new Bayesian method, based on decision theory and the EM algorithm, is introduced to test a point hypothesis in latent variable models. The new statistic is a by-product of the Bayesian MCMC output and, hence, easy to compute. It is shown that the new statistic is appropriately defined under improper priors because the method employs a continuous loss …

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Measurement And High Finance, Peter C. B. Phillips, Jun Yu, Eric Ghysels Oct 2010

Measurement And High Finance, Peter C. B. Phillips, Jun Yu, Eric Ghysels

Research Collection School Of Economics

Turbulence in the world of banking and finance over the last two years has riveted media attention on the financial industry, exposing practices, products and risks in the industry to widespread public scrutiny. Questions continue to be asked about the management and regulation of an industry whose performance is now seen to affect the world’s financial health and its prospects as much as it does national savings and individual retirement funds.

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Using Financial Econometrics To Measure Risk, Peter C. B. Phillips, Jun Yu, Eric Ghysels Oct 2010

Using Financial Econometrics To Measure Risk, Peter C. B. Phillips, Jun Yu, Eric Ghysels

Research Collection School Of Economics

No abstract provided.

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An Asian Response To International Financial Reforms, Hoe Ee Khor, Kim Song Tan Oct 2010

An Asian Response To International Financial Reforms, Hoe Ee Khor, Kim Song Tan

Research Collection School Of Economics

Asia has emerged as a much more important player in the global economy after the recent financial crisis. Together with other emerging market economies, Asia is expected to be a key driver for global economic growth in the near to medium term. Along with this, there is a rising chorus for an “Asian approach” to financial reforms in the region and internationally. There are also calls for Asia to play a bigger role in designing the new architecture for the global financial system.

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Male Aggression And Female Peace-Making: A Review Of Malcolm Potts And Thomas Hayden, Sex And War: How Biology Explains Warfare And Terrorism And Offers A Path To A Safer World, Katherine A. Valentine, Sharon Koh, Norman P. Li Oct 2010

Male Aggression And Female Peace-Making: A Review Of Malcolm Potts And Thomas Hayden, Sex And War: How Biology Explains Warfare And Terrorism And Offers A Path To A Safer World, Katherine A. Valentine, Sharon Koh, Norman P. Li

Research Collection School of Social Sciences

No abstract provided.

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Learning To Belong, Lyn Parker, Raihani Raihani, Chang Yau Hoon Oct 2010

Learning To Belong, Lyn Parker, Raihani Raihani, Chang Yau Hoon

Research Collection School of Social Sciences

Educational efforts are being made around the country to enable minorities to feel they belong and to teach majorities that they should value the diversity of Indonesia. The cultural, linguistic and ethnic diversity of Indonesia is famed around the world and accepted within Indonesia. The national motto of ‘Unity in Diversity’ places diversity at the centre of the nation-state. But despite significant progress in democratisation, decentralisation and regional autonomy in post-Suharto Indonesia, old fears of federalism, separatism and disunity remain. Multiculturalism and pluralism are still often viewed with suspicion and paranoia is spread by extremists for their own ends.

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Rich Internet Geoweb For Spatial Data Infrastructure, Tin Seong Kam Oct 2010

Rich Internet Geoweb For Spatial Data Infrastructure, Tin Seong Kam

Research Collection School Of Computing and Information Systems

In this information age, more and more public statistical data such as population census, household living, local economy and business establishment are distributed over the internet within the framework of spatial data infrastructure. By and large, these data are organized geographically such as region, province as well as district. Usually, they are published in the form of digital maps over the internet as simple points, lines and polygons markers limited or no analytical function available to transform these data into useful information. To meet the analytical needs of casual public data users, we contribute RIGVAT, a rich internet geospatial visual …

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Mining Interesting Link Formation Rules In Social Networks, Cane Wing-Ki Leung, Ee Peng Lim, David Lo, Jianshu Weng Oct 2010

Mining Interesting Link Formation Rules In Social Networks, Cane Wing-Ki Leung, Ee Peng Lim, David Lo, Jianshu Weng

Research Collection School Of Computing and Information Systems

Link structures are important patterns one looks out for when modeling and analyzing social networks. In this paper, we propose the task of mining interesting Link Formation rules (LF-rules) containing link structures known as Link Formation patterns (LF-patterns). LF-patterns capture various dyadic and/or triadic structures among groups of nodes, while LF-rules capture the formation of a new link from a focal node to another node as a postcondition of existing connections between the two nodes. We devise a novel LF-rule mining algorithm, known as LFR-Miner, based on frequent subgraph mining for our task. In addition to using a support-confidence framework …

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A Roadmap Of The Male Brain [Book Review], Lay See Ong Lay See Oct 2010

A Roadmap Of The Male Brain [Book Review], Lay See Ong Lay See

Research Collection School of Social Sciences

No abstract provided.

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Constitutional Fiats: Presidential Legislation In India's Parliamentary Democracy, Shubhankar Dam Oct 2010

Constitutional Fiats: Presidential Legislation In India's Parliamentary Democracy, Shubhankar Dam

Research Collection Yong Pung How School Of Law

The article presents information on the presidential legislation of the parliamentary democracies, India and Pakistan. It discusses the role of the President acting as the Council of Ministers for the enactment of legislations as ordinances without the consent of the Parliament. Information on the legal interpretation of the ordinances and its interaction with the principles of the parliamentary system of the government is also presented.

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Affirming Difference, Chang Yau Hoon Oct 2010

Affirming Difference, Chang Yau Hoon

Research Collection School of Social Sciences

Elite Christian schools in Indonesia can become places where religious, ethnic and class identities are heightened, particularly in relation to the nation’s ethnic Chinese. Exceptional academic performance, faith education, strict discipline and a safe environment are some of the factors that attract ethnic Chinese to enrol their children into elite Christian schools in Indonesia. In fact, these schools have become a thriving business across major cities, generating handsome profits from the provision of high quality education. They are generally attended by Chinese Indonesian students from a middle and upper class background. The schools are equipped with much better facilities than …

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Smoothing Local-To-Moderate Unit Root Theory, Peter C. B. Phillips, Tassos Magdalinos, Liudas Giraitis Oct 2010

Smoothing Local-To-Moderate Unit Root Theory, Peter C. B. Phillips, Tassos Magdalinos, Liudas Giraitis

Research Collection School Of Economics

A limit theory is established for autoregressive time series that smooths the transition between local and moderate deviations from unity and provides a transitional form that links conventional unit root distributions and the standard normal. Edgeworth expansions of the limit theory are given. These expansions show that the limit theory that holds for values of the autoregressive coefficient that are closer to stationarity than local (i.e. deviations of the form rho = 1 + c/n, where n is the sample size and c < 0) holds up to the second order. Similar expansions around the limiting Cauchy density are provided for the mildly explosive case. (C) 2010 Elsevier B.V. All rights reserved.

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Stories For Today: A Contemporary Artist Brings New Life To A Moribund Indonesian Theatre Genre, Margaret Chan Oct 2010

Stories For Today: A Contemporary Artist Brings New Life To A Moribund Indonesian Theatre Genre, Margaret Chan

Research Collection School of Social Sciences

Dani Iswardana is single-minded about his mission to inject new life into wayang beber, perhaps the oldest form of Indonesian narrative theatre, but now described as a dying art. The intensity of his purpose buoys Dani through long stretches of painting when food is forgotten and his work, fuelled by coffee and cigarettes, is all that he cares for. However Dani has gone for years without producing anything, because he will work only when the creative spirit possesses him. Painting for money means nothing to him, and the everyday demands of making a living have no place in his creative …

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Indescribability And Its Irrelevance For Contractual Incompleteness, Takashi Kunimoto Sep 2010

Indescribability And Its Irrelevance For Contractual Incompleteness, Takashi Kunimoto

Research Collection School Of Economics

The incomplete contracts literature often cites indescribable contingencies as a major obstacle to the creation of completecontracts. Using agents’ minimum foresight concerning possible future payoffs, Maskin and Tirole (Rev Econ Stud 66:83–114, 1999) show that indescribability does not matter for contractual incompletenessas long as there is symmetric information at both the contracting stage and the trading stage. This is called the irrelevance theorem. The following generalization of the irrelevance theorem is shown here: indescribability does not matter even in the presenceof asymmetric information at the trading stage, as long as there is symmetric information at the contracting stage. This isan …

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The Division Of Matrimonial Assets: A Mathematical Methodology As A "Check"? Ajr V. Ajs, Siyuan Chen Sep 2010

The Division Of Matrimonial Assets: A Mathematical Methodology As A "Check"? Ajr V. Ajs, Siyuan Chen

Research Collection Yong Pung How School Of Law

In a recent High Court decision concerning the division of matrimonial assets, the Judge developed an extensive (and somewhat mathematical) methodology “as a rough check” to his discretionary powers in determining a “just and equitable” division of the matrimonial assets. This introduced a new perspective to an exercise long considered to be impossible to be mathematically precise. This piece considers the extent of the utility of the new methodology.

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National Culture And Capital Structure Decisions: Evidence From Foreign Joint Ventures In China, Kai Li, Dale W. Griffin, Heng Yue, Longkai Zhao Sep 2010

National Culture And Capital Structure Decisions: Evidence From Foreign Joint Ventures In China, Kai Li, Dale W. Griffin, Heng Yue, Longkai Zhao

Research Collection School Of Accountancy

We investigate the role of firms’ country of origin in financial leverage decisions using data on foreign joint ventures in China. We hypothesize that national culture enters the joint optimization process leading to foreign joint ventures’ leverage decisions and that it affects leverage decisions both directly and indirectly. Using cultural values of mastery and embeddedness to explain country of origin effects, we find that mastery has negative and significant direct effects on foreign joint ventures’ leverage and short-term debt decisions, and a positive and significant direct effect on the likelihood of foreign joint ventures’ having long-term debt. The indirect effects …

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A Robust Lm Test For Spatial Error Components, Zhenlin Yang Sep 2010

A Robust Lm Test For Spatial Error Components, Zhenlin Yang

Research Collection School Of Economics

This paper presents previous termanext term modified previous termLM test of spatial error components,next term which is shown to be previous termrobustnext term against distributional misspecifications and previous termspatialnext term layouts. The proposed previous termtestnext term differs from the previous termLM testnext term of Anselin (2001) by previous termanext term term in the denominators of the previous termtestnext term statistics. This term disappears when either the previous termerrorsnext term are normal, or the variance of the diagonal elements of the product of previous termspatialnext term weights matrix and its transpose is zero or approaches to zero as sample size goes …

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Labor Supply Responses To The 1990s Japanese Tax Reforms, Ken Yamada Sep 2010

Labor Supply Responses To The 1990s Japanese Tax Reforms, Ken Yamada

Research Collection School Of Economics

The consumption-leisure choice model implies that an exogenous change in tax rates will induce a change in labor supply. This implication is expected to be important to labor supplied by secondary earners under a progressive tax system when spousal income alters effective marginal tax rates. This paper examines labor supply responses to the income tax changes associated with Japanese tax reforms during the 1990s. The results indicate that the hours-of-work elasticity with respect to the net-of-tax rate is 0.8 for married women.

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Discharge Of A Contract Where Both Parties Are In Breach: Alliance Concrete Singapore Pte Ltd V Comfort Resources Pte Ltd, Chee Ho Tham Sep 2010

Discharge Of A Contract Where Both Parties Are In Breach: Alliance Concrete Singapore Pte Ltd V Comfort Resources Pte Ltd, Chee Ho Tham

Research Collection Yong Pung How School Of Law

This case note examines the most recent attempt by the Court of Appeal to provide further guidance on: (a) how the doctrine of discharge of contract by breach operates when both parties are in breach of their contract obligations; and (b) when a promisee is entitled to rely on an alternate basis to justify its election to discharge a contract for the promisor’s breach when the basis originally relied upon and communicated to the promisor is ultimately found to be legally insufficient.

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A Multilevel Model Of Minority Opinion Expression And Team Decision-Making Effectiveness, Guihyun Grace Park, Richard D. Deshon Sep 2010

A Multilevel Model Of Minority Opinion Expression And Team Decision-Making Effectiveness, Guihyun Grace Park, Richard D. Deshon

Research Collection School of Social Sciences

The consideration of minority opinions when making team decisions is an important factor that contributes to team effectiveness. A multilevel model of minority opinion influence in decision-making teams is developed to address the conditions that relate to adequate consideration of minority opinions. Using a sample of 57 teams working on a simulated airport security-screening task, we demonstrate that team learning goal orientation influences the confidence of minority opinion holders and team discussion. Team discussion, in turn, relates to minority influence, greater decision quality, and team satisfaction. Implications for managing decision-making teams in organizations are discussed.

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A Case Study In The Application Of An Agent-Based Approach In The Formulation Of Policies For Uk Transport Emission Reduction, Araz Taeihagh, René Bañares-Alcántara Sep 2010

A Case Study In The Application Of An Agent-Based Approach In The Formulation Of Policies For Uk Transport Emission Reduction, Araz Taeihagh, René Bañares-Alcántara

Research Collection School of Social Sciences

The increased complexity in our socio-economical systems requires the development of new tools to support a better understanding of the intricacies involved in addressing problems associated with such systems. We believe that by introducing a systematic approach for exploring alternative policies we can improve the decomposition of these problems, decrease the required time for analysis and formulate more effective polices. A case in policy formulation and analysis in the transport sector for achieving CO2 emission targets in the UK is presented; this solution is based on a previously proposed framework (Taeihagh et al., 2009a). The results obtained from the analysis …

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