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Articles 1561 - 1590 of 1733
Full-Text Articles in Economics
Modeling The Firm-Size Distribution Using Box-Cox Heteroscedastic Regression, Zhenlin Yang, Yiu Kuen Tse
Modeling The Firm-Size Distribution Using Box-Cox Heteroscedastic Regression, Zhenlin Yang, Yiu Kuen Tse
Research Collection School Of Economics
Using the Box-Cox regression model with heteroscedasticity (BCHR), we re‐examine the size distribution of the Portuguese manufacturing firms studied by Machado and Mata (2000) using the Box-Cox quantile regression (BCQR) method. We show that the BCHR model compares favourably against the BCQR method. In particular, the BCHR model can answer the key questions addressed by the BCQR method, with the advantage that the estimated quantile functions are monotonic. Furthermore, confidence intervals of the regression quantiles are easy to compute, and the estimation of the Box-Cox heteroscedastic regression is straight forward.
The Empirical Relationship Between Exchange Rates And Interest Rates In Post-Crisis Asia, Hwee Kwan Chow, Yoonbai Kim
The Empirical Relationship Between Exchange Rates And Interest Rates In Post-Crisis Asia, Hwee Kwan Chow, Yoonbai Kim
Research Collection School Of Economics
In post-crisis Asia, all crisis-hit countries (except Malaysia) announced a shift from exchange rate based monetary policy framework to the explicit adoption of inflation targeting that uses interest rates as the key monetary policy operating instrument. In this study, we examine the empirical relationship between exchange rates and interest rates, and investigate how the dynamics between them have changed following the crisis. This is carried out by constructing a bivariate VAR-GARCH model for each of the four Asian crisis countries, namely Indonesia, Korea, Philippines and Thailand. The findings suggest these countries do not use interest rate policy more actively to …
Bargaining And Competition Revisited, Takashi Kunimoto, Roberto Serrano
Bargaining And Competition Revisited, Takashi Kunimoto, Roberto Serrano
Research Collection School Of Economics
We show the robustness of the Walrasian result obtained in models of bargaining in pairwise meetings. Restricting trade to take place only in pairs, most of the assumptions made in the literature are dispensed with. These include assumptions on preferences (differentiability, monotonicity, strict concavity, bounded curvature), on the set of agents (dispersed characteristics) or on the consumption set (allowing only divisible goods).
Have U.S. - Japan Trade Agreements Made A Difference?, Byron Gangnes, Craig Parsons
Have U.S. - Japan Trade Agreements Made A Difference?, Byron Gangnes, Craig Parsons
Research Collection School Of Economics
International trade is governed by a complicated patchwork of international treaties, bilateral agreements, and unilateral actions, often directed at trade in very specific commodities. A determination of the impact of trade measures begins with an assessment of their direct effect on trade volumes and prices in targeted sectors. While in some cases—such as the recent U.S. anti-dumping duties on steel—the measures have readily identifiable impacts, in others cases the effects are more difficult to determine.
From Efficiency-Driven To Innovation-Driven Growth: Perspectives From Singapore, Kim Song Tan
From Efficiency-Driven To Innovation-Driven Growth: Perspectives From Singapore, Kim Song Tan
Research Collection School Of Economics
No abstract provided.
Local Coordination And Market Equilibria, Shurojit Chatterji, Sayantan Ghosal
Local Coordination And Market Equilibria, Shurojit Chatterji, Sayantan Ghosal
Research Collection School Of Economics
We reformulate the local stability analysis of market equilibria in a competitive market as a local coordination problem in a market game, where the map associating market prices to best-responses of all traders is common knowledge and well-defined both in and out of equilibrium. Initial expectations over market variables differ from their equilibrium values and are not common knowledge. This results in a coordination problem as traders use the structure of the market game to converge back to equilibrium. We analyse a simultaneous move and a sequential move version of the market game and explore the link with local rationalizability.
A Small-Sample Overlapping Variance-Ratio Test, Yiu Kuen Tse, K. W. Ng, Xibin Zhang
A Small-Sample Overlapping Variance-Ratio Test, Yiu Kuen Tse, K. W. Ng, Xibin Zhang
Research Collection School Of Economics
The null distribution of the overlapping variance-ratio (OVR) test of the random-walk hypothesis is known to be downward biased and skewed to the right in small samples. As shown by , the test under-rejects the null on the left tail seriously when the sample size is small. This property adversely affects the applicability of the OVR test to macroeconomic time series, which usually have rather small samples. In this paper, we propose a modified overlapping variance-ratio statistic and derive its exact mean under the normality assumption. We propose to approximate the small-sample distribution of the modified statistic using a beta …
Deviance Information Criterion For Comparing Stochastic Volatility Models, Andreas Berg, Renate Meyer, Jun Yu
Deviance Information Criterion For Comparing Stochastic Volatility Models, Andreas Berg, Renate Meyer, Jun Yu
Research Collection School Of Economics
Bayesian methods have been efficient in estimating parameters of stochastic volatility models for analyzing financial time series. Recent advances made it possible to fit stochastic volatility models of increasing complexity, including covariates, leverage effects, jump components, and heavy-tailed distributions. However, a formal model comparison via Bayes factors remains difficult. The main objective of this article is to demonstrate that model selection is more easily performed using the deviance information criterion (DIC). It combines a Bayesian measure of fit with a measure of model complexity. We illustrate the performance of DIC in discriminating between various different stochastic volatility models using simulated …
Empirical Characteristic Function Estimation And Its Applications, Jun Yu
Empirical Characteristic Function Estimation And Its Applications, Jun Yu
Research Collection School Of Economics
This paper reviews the method of model-fitting via the empirical characteristic function. The advantage of using this procedure is that one can avoid difficulties inherent in calculating or maximizing the likelihood function. Thus it is a desirable estimation method when the maximum likelihood approach encounters difficulties but the characteristic function has a tractable expression. The basic idea of the empirical characteristic function method is to match the characteristic function derived from the model and the empirical characteristic function obtained from data. Ideas are illustrated by using the methodology to estimate a diffusion model that includes a self-exciting jump component. A …
Selection Correction And Sensitivity Analysis For Ordered Treatment Effect On Count Response, Myoung-Jae Lee
Selection Correction And Sensitivity Analysis For Ordered Treatment Effect On Count Response, Myoung-Jae Lee
Research Collection School Of Economics
In estimating the effect of an ordered treatment [tau] on a count response y with an observational data where [tau] is self-selected (not randomized), observed variables x and unobserved variables [epsilon] can be unbalanced across the control group ([tau] = 0) and the treatment groups ([tau] = 1, . . . , J). While the imbalance in x causes 'overt bias' which can be removed by controlling for x, the imbalance in [epsilon] causes 'covert (hidden or selection) bias' which cannot be easily removed. This paper makes three contributions. First, a proper counter-factual causal framework for ordered treatment effect on …
Market Segmentation And Information Values Of Earnings Announcements: Some Empirical Evidence From An Event Study On The Chinese Stock Market, Y. Gao, Yiu Kuen Tse
Market Segmentation And Information Values Of Earnings Announcements: Some Empirical Evidence From An Event Study On The Chinese Stock Market, Y. Gao, Yiu Kuen Tse
Research Collection School Of Economics
This paper investigates the trading activities of two distinct classes of shareholders, namely, the Chinese domestic investors and the foreign investors in the segmented Chinese A- and B-share markets, respectively. We conduct an event study on the annual earnings announcements based on two different accounting standards: International accounting standards (IAS) and PRC generally accepted accounting principles (PRC GAAP). The earnings announcements based on IAS and PRC GAAP are value relevant. The investors in the B-share market react to both the IAS and PRC GAAP earnings announcements, while the investors in the A-share market pay more attention to the PRC GAAP …
Social Trust, Cooperation, And Human Capital, Fali Huang
Social Trust, Cooperation, And Human Capital, Fali Huang
Research Collection School Of Economics
The importance of social trust on economic growth has been suggested by many empirical works. This paper formalizes the concept of social trust and studies its formation process in a game theoretic setting. It provides plausible explanations for a wide range of empirical and experimental findings. The main results of the paper are as follows. For utility-maximizing players, cooperation arises in one-period prisoner’s dilemmas if and only if there is social trust. The amount of social trust in a given game is determined by the distribution of players’ cooperative tendency. Cooperative tendency is in essence a component of human capital …
Congestion Control And Vehicle Ownership Restriction: The Choice Of An Optimal Quota Policy, Winston T. H. Koh
Congestion Control And Vehicle Ownership Restriction: The Choice Of An Optimal Quota Policy, Winston T. H. Koh
Research Collection School Of Economics
Singapore introduced a vehicle quota system (VQS) in 1990 as part of its overall policy to control urban congestion. While the VQS has reduced the annual growth rate of the vehicle population to about 3 per cent, it has created uncertainty in the cost of vehicle ownership due to the fluctuations in licence prices. This paper discusses three issues relating to the optimal design of a VQS: licence transferability, sub-categorisation, and the choice of an auction format. The analysis shows that licence transferability is not unambiguously desirable, sub-categorisation is highly regressive, and an open auction format results in less aggressive …
Forecasting The Global Electronics Cycle With Leading Indicators: A Var Approach, Hwee Kwan Chow, Keen Meng Choy
Forecasting The Global Electronics Cycle With Leading Indicators: A Var Approach, Hwee Kwan Chow, Keen Meng Choy
Research Collection School Of Economics
Developments in the global electronics industry are typically monitored by tracking indicators that span a whole spectrum of activities in the sector. However, these indicators invariably give mixed signals at each point in time, thereby hampering attempts at prediction. In this paper, we propose a unified framework for forecasting the global electronics cycle by constructing a VAR model that captures the economic interactions between putative leading indicators representing expectations, orders, inventories and prices. The ability of the indicators to presage world semiconductor sales is first examined by Granger causality tests. Subsequently, an impulse response analysis confirms the leading qualities of …
The Politics Of Wto Enforcement Mechanism, Pao-Li Chang
The Politics Of Wto Enforcement Mechanism, Pao-Li Chang
Research Collection School Of Economics
This paper attempts to develop a formal economic framework to analyze the influences of domestic political considerations by democratic governments in shaping the WTO enforcement outcomes in the wake of a violation ruling against the defendant. Since a different mix of import and export sectors in the defendant and complainant country will benefit from the various potential enforcement outcomes, they become competing forces which steer the strategic interactions between the disputing governments. The results of the paper illustrate the complainant’s strategy in selecting the retaliation list, and the likelihood of the defendant’s compliance or compensation in response to the proposed …
The Structuralist Perspective On Real Exchange Rate, Share Price Level And Employment Path: What Room Is Left For Money?, Edmund S. Phelps, Hian Teck Hoon, Gylfi Zoega
The Structuralist Perspective On Real Exchange Rate, Share Price Level And Employment Path: What Room Is Left For Money?, Edmund S. Phelps, Hian Teck Hoon, Gylfi Zoega
Research Collection School Of Economics
The current sluggish performance of the US economy follows one of the more remarkable booms in modern history. The late 1990s was a period of simultaneous output and productivity growth,1 low unemployment and stable inflation, culminating in an unemployment rate of only 3.9% in the fourth quarter of the year 2000. The absence of rising inflation during this period came as a surprise to many since the level of the natural rate of unemployment was commonly estimated to be in the range of 5-6% by the mid 1990s. The non-inflationary boom, however, reminds one of another episode where non-monetary forces …
Information Recovery In A Study With Surrogate Endpoints, Song Xi Chen, Denis H. Y. Leung, Jing Qin
Information Recovery In A Study With Surrogate Endpoints, Song Xi Chen, Denis H. Y. Leung, Jing Qin
Research Collection School Of Economics
Recently, there has been a lot of interest in statistical methods for analyzing data with surrogate endpoints. In this article, we consider parameter estimation from a model that relates a variable Y to a set of covariates, X, in the presence of a surrogate, S. We assume that the data are made up of two random samples from the population, a validation set where (Y, X, S) are observed on every subject and a nonvalidation set where only (X, S) are measured. We show how information from the nonvalidation set can be incorporated to improve upon estimation of a parameter …
Optimum Currency Area In Europe: An Alternative Evaluation, Yoonbai Kim, Hwee Kwan Chow
Optimum Currency Area In Europe: An Alternative Evaluation, Yoonbai Kim, Hwee Kwan Chow
Research Collection School Of Economics
In this paper we explore an alternative scheme to assess the suitability of adopting a common currency by Western European countries. It is based on the role of common regional shocks in the determination of output. The results show that the OCA theory well explains and predicts participation decisions in EMU. We also find that our OCA index is highly consistent with two popular schemes that have been introduced by Bayoumi and Eichengreen.
The Impacts Of Hong Kong's Currency Board Reforms On Its Interbank Market, Yiu Kuen Tse, Paul S. L. Yip
The Impacts Of Hong Kong's Currency Board Reforms On Its Interbank Market, Yiu Kuen Tse, Paul S. L. Yip
Research Collection School Of Economics
Among the economies with a Currency Board System (CBS), Hong Kong (HK) is probably the one with the largest and most developed financial sector, as well as the highest capital mobility. Hence, studying HK’s CBS is not only crucial to HK, but also important for the understanding of the modern CBS. This paper outlines the major monetary reforms in HK since the late 1980s. The impacts of these reforms and the 1997–1998 Asian Financial Crisis are then examined empirically. We focus on the differentials between the US and HK interbank interest rates. We assume the conditional-mean equation follows an autoregressive …
Score Tests For Inverse Gaussian Mixture, Zhenlin Yang
Score Tests For Inverse Gaussian Mixture, Zhenlin Yang
Research Collection School Of Economics
The mixed inverse Gaussian given by Whitmore (Scand. J. Statist., 13, 1986, 211–220) provides a convenient way for testing the goodness-of-fit of a pure inverse Gaussian distribution. The test is a one-sided score test with the null hypothesis being the pure inverse Gaussian (i.e. the mixing parameter is zero) and the alternative a mixture. We devise a simple score test and study its finite sample properties. Monte Carlo results show that it compares favourably with the smooth test of Ducharme (Test, 10, 2001, 271-290). In practical applications, when the pure inverse Gaussian distribution is rejected, one is interested in making …
Fiducial Predictive Densities And Econometric Duration Analysis, Zhenlin Yang
Fiducial Predictive Densities And Econometric Duration Analysis, Zhenlin Yang
Research Collection School Of Economics
In this article, we propose using fiducial predictive density (FPD) as a density estimate, which leads naturally to estimators of survivor and hazard functions and provides a simple way of constructing shortest prediction intervals. This approach is studied in detail in the context of two flexible duration models proposed in this paper, namely the trans-normal and trans-exponential families, by presenting the FPDs, their basic properties, their Bayesian correspondence and their applications in econometric duration analysis. Empirical evidences show that the FPD method provides better estimates of survivor and hazard functions, particularly the latter, than does the usual maximum likelihood method. …
A Survey On Physical Delivery Versus Cash Settlement In Futures Contracts, Donald Lien, Yiu Kuen Tse
A Survey On Physical Delivery Versus Cash Settlement In Futures Contracts, Donald Lien, Yiu Kuen Tse
Research Collection School Of Economics
A futures contract may adopt physical delivery or cash settlement to liquidate open positions after the maturity day. While traditionally physical delivery specification is favored, exchanges have recently turned to examine cash settlement possibilities. This paper summarizes current literature on settlement specifications with emphases on market manipulation, cash index construction, and hedging effectiveness comparisons
Tests Of Functional Form And Heteroscedasticity, Zhenlin Yang, Yiu Kuen Tse
Tests Of Functional Form And Heteroscedasticity, Zhenlin Yang, Yiu Kuen Tse
Research Collection School Of Economics
This paper considers tests of misspecification in a heteroscedastic transformation model. We derive Lagrange multiplier (LM) statistics for (i) testing functional form and heteroscedasticity jointly, (ii) testing functional form in the presence of heteroscedasticity, and (iii) testing heteroscedasticity in the presence of data transformation. We present LM statistics based on the expected information matrix. For cases (i) and (ii), this is done assuming the Box-Cox transformation. For case (iii), the test does not depend on whether the functional form is estimated or pre-specified. Small-sample properties of the tests are assessed by Monte Carlo simulation, and comparisons are made with the …
Micro-Level Estimation Of The Prevalence Of Stunting And Underweight Among Children In Cambodia, Tomoki Fujii, Livia Montana
Micro-Level Estimation Of The Prevalence Of Stunting And Underweight Among Children In Cambodia, Tomoki Fujii, Livia Montana
Research Collection School Of Economics
We are pleased to share this copy of the preliminary report on "Micro-Level Estimation of the Prevalence of Stunting and Underweight Among Children in Cambodia." This study is the result of a collaboration between the Ministry of Planning, the United Nations World Food Programme and the MEASURE DHS+ project, with in-kind assistance from The World Bank. We also would like to express our acknowledgement to Italian Cooperation and International Fund for Agricultural Development for supporting in publication and distribution.
A Formal Test Of Density Forecast Evaluation, Anil K. Bera, Aurobindo Ghosh
A Formal Test Of Density Forecast Evaluation, Anil K. Bera, Aurobindo Ghosh
Research Collection School Of Economics
Recent econometricians have shifted their attention from point and interval forecasts of the probability density functions (PDF) of various market variables. One of the main problems in this area has been evaluation of the density forecasts. In this papers, we propose a formal test for density forecast evaluation using Neyman (1937) smooth test procedure. Apart from giving indications of acceptance or rejection of the tested model, this approach provides specific sources (such as the mean, variance, skewness and kurtosis or the location, scale and shape of the distribution) or rejections, thereby helping in deciding possible modifications of the assumed model. …
An Empirical Examination Of Ipo Underpricing In The Chinese A-Share Market, Ting Yu, Yiu Kuen Tse
An Empirical Examination Of Ipo Underpricing In The Chinese A-Share Market, Ting Yu, Yiu Kuen Tse
Research Collection School Of Economics
Research in the literature shows that initial public offerings (IPOs) of common stocks are systematically priced at a discount to their subsequent initial trading price. The large underpricing magnitude in the Chinese IPO market has attracted much attention. We consider three hypotheses that may explain the IPO underpricing in China. These are the winner's curse hypothesis, the ex ante uncertainty hypothesis and the signaling hypothesis. Among these hypotheses, the winner's curse hypothesis has not been tested in the Chinese market. Using IPO data for online fixed-price offerings from November 1995 to December 1998, our results show that the winner's curse …
The Role Of United Charities In Fundraising: The Case Of Singapore, Vincent Chua, Chung Ming Wong
The Role Of United Charities In Fundraising: The Case Of Singapore, Vincent Chua, Chung Ming Wong
Research Collection School Of Economics
Theory suggests that a united charity helps to economize on fundraising costs by reducing competition for donations among member charities. However, donors often cannot control the allocation of their donations, and charities may dislike the monitoring of their activities. This paper examines these and other issues relating to the Community Chest of Singapore. The results, based on analysis of financial positions and fundraising costs of a large number of charities, suggest that the Community Chest does possess important fundraising advantages. Thus charities in financial difficulties or in need of funds for additional programs tend to seek membership. However, organizations that …
Adrenocortical Adenoma And Carcinoma: Histopathological And Molecular Comparative Analysis, A. Stojadinovic, M. F. Brennan, A. Hoos, A. Omeroglu, Denis H. Y. Leung, M. Dudas, A. Nissan, C. Cordon-Cardo, R.A. Ghossein
Adrenocortical Adenoma And Carcinoma: Histopathological And Molecular Comparative Analysis, A. Stojadinovic, M. F. Brennan, A. Hoos, A. Omeroglu, Denis H. Y. Leung, M. Dudas, A. Nissan, C. Cordon-Cardo, R.A. Ghossein
Research Collection School Of Economics
We compared histomorphological features and molecular expression profiles of adrenocortical adenomas (ACAd) and carcinomas (ACCa). A critical histopathological review (mean, 11 slides per patient) was conducted of 37 ACAd and 67 ACCa. Paraffin-embedded tissue cores of ACAd (n = 33) and ACCa (n = 38) were arrayed in triplicate on tissue microarrays. Expression profiles of p53, mdm-2, p21, Bcl-2, cyclin D1, p27, and Ki-67 were investigated by immunohistochemistry and correlated with histopathology and patient outcome using standard statistical methodology. Median follow-up period was 5 years. Tumor necrosis, atypical mitoses, and >1 mitosis per 50 high-power fields were factors that were …
Analysis Of Private Transfers With Panel Fixed Effect Censored Model Estimator, Sung Jin Kang, Myoung-Jae Lee
Analysis Of Private Transfers With Panel Fixed Effect Censored Model Estimator, Sung Jin Kang, Myoung-Jae Lee
Research Collection School Of Economics
Understanding private transfer is important for safety-net policies because private transfer provides economic benefits similar to those of public programs such as unemployment insurance and pension. Applying Honoré’s [Econometrica 60 (1992) 533] panel fixed-effect censored model estimator to Korean data, we show that private transfer is altruistically motivated and there is a strong crowding-out effect of public transfer on private transfer. We also find that low-income people suffered to different degrees during the financial crisis period of 1997 to 1998. This finding and the crowding-out effect may be taken as failures of the Korean public transfer programs during the period.
Open Versus Sealed-Bid Auctions: Testing For Revenue Equivalence Under Singapore's Vehicle Quota System, Winston T. H. Koh, Roberto S. Mariano, Yiu Kuen Tse
Open Versus Sealed-Bid Auctions: Testing For Revenue Equivalence Under Singapore's Vehicle Quota System, Winston T. H. Koh, Roberto S. Mariano, Yiu Kuen Tse
Research Collection School Of Economics
Using data from the auction of vehicle quota licenses in Singapore, we study if revenue equivalence holds when the auction format was switched from a sealed-bid format (May 1990 to June 2001) to an open bidding format since July 2001. Our econometric analysis indicates the change in auction format led to a change in bidding behavior. On average, the quota license premium under the open bidding format is about US$1,000 (about 7.5% of the Category E license price in June 2001) lower, compared to the forecast level that would have prevailed if there had been no change in the auction …