FACTOR MIGRATION AND INCOME DISTRIBUTION IN SOME DEVELOPING COUNTRIES

A three factor, two sector general equilibrium model is used to determine long run income distributional impacts of factor supply changes associated with international migration in developing and newly industrializing countries. Factor intensity rankings among three factors (capital, skilled and unskilled labor) between two industries (agriculture and manufacturing-services) play a critical role in determining which factors are natural friends with respect to migration. A result common to all countries is observed friendship between capital and unskilled labor: reducing (increasing) the supply of one will lower (raise) payments to the other.     

Restrictions on variables

Accounting identities impose exact restrictions on the endogenous variables of econometric models. Such restrictions are usually met by choosing a closing entry or by building an allocation model. Selecting a closing entry may be difficult or arbitrary, while allocation models admit little flexibility in the choice of explanatory variables and lagged adjustment schemes. This paper studies a third solution which in a sense lies inbetween: freely chosen equations for all variables are adjusted additively such that the restrictions will hold. The adjustment involves some new parameters which can be estimated simultaneously with the original parameters using Maximum Likelihood techniques.An application is provided for a financial model of the Dutch private sector. Our approach here proves superior to any choice of closing entry in the system.     

The Expectation of Products of Quadratic Forms in Normal Variables

Summary  A complete explicit formula for the expectation of the product of an arbitrary number of quadratic forms in normally distributed variables is derived, extending and confirming recent results of M agnus [4]. Incidentally, some results on traces of matrix products are presented.     

ELECTRIC UTILITY DEMAND-SIDE MANAGEMENT IN POLAND

Demand-Side Management (DSM) improves load factors and energy efficiency and reduces emissions. DSM methods are understood in the United States, but using DSM in Poland poses problems related to constraints in the power sector and the economic environment. This paper discusses the reorganization of the Polish energy sector and Polish energy policy during in the transition since 1989 and discusses the obstacles to implementing DSM programs.     

The Predictive Ability of Geographic Segment Information at the Country, Continent, and Consolidated Levels

This study examines whether geographic information disclosed at an increasingly disaggregated level (specifically, consolidated vs. continent vs. country) results in increased predictive ability of company operations (specifically, sales, gross profit, and earnings). Multinational corporations (MNCs) are formed using a simulated merger approach by combining the annual operating results of six individual firms, one from each of six countries. This approach makes it possible to compare the forecasting accuracy of data disclosed at the country, continent, and consolidated levels, not possible using current geographic segment disclosures. Previous studies using year-ahead forecast models implicitly assume the predictive factors included in the models are significant in forecasting operating results. Using regression forecast models, this study tests whether the predictive factors included in the models are effective in forecasting operating results by examining the direction, size, and significance of the regression coefficient estimates. The coefficients provide evidence that exchange rate changes, inflation, and real GNP growth are useful in forecasting annual sales and gross profit. Whereas, at least for this sample and this time period, exchange rate changes, inflation, and real GNP growth are not significant variables in forecasting annual earnings. The results indicate that the accuracy of forecasts increase as sales and gross profit are disclosed at a more disaggregated geographic level. The hypothesized relationship between consolidated, continent, and country levels, while holding strongly under perfect foresight, holds to a lesser extent using forecasts of exchange rates, inflation, and real GNP.     

TRADING TIME EFFECTS IN FINANCIAL AND COMMODITY FUTURES MARKETS

Through the examination of one commodity contract, soybeans, and one financial contract, U.S. Treasury bonds, the authors test to determine (1) whether mean rates of return during trading times differ from mean rates of return during nontrading times; (2) whether mean returns during trading times and nontrading times differ by day of the week; (3) whether trading time returns differ significantly from previous nontrading time returns; and (4) the extent to which trading and previous nontrading returns are correlated. In addition, the authors empirically examine a possible explanation for the results obtained.     

Challenges in quantitative economic analysis in support of multilateral trade negotiations

A wide range of economic analysis of agricultural trade liberalization was performed prior to and during the Uruguay Round of trade negotiations. Views differ as to the effectiveness of this research, although most would agree that it became less relevant as the negotiations progressed. This paper reviews the contributions of economists to the trade liberalization debate, with an emphasis on the quantitative assessment of multilateral agricultural trade liberalization. With a new round of agricultural trade negotiations scheduled to begin in 1999 it is crucial that the quantitative work required to support these negotiations begin in the near future. The authors conclude that the Uruguay Round outcome provides numerous challenges and opportunities in analyzing the traditional agenda of agricultural trade liberalization. In addition, new issues will be added to the agenda of the next round of negotiations. These include: trade and the environment, competition policy and intellectual property rights. It is important that economists begin to develop a research agenda that can address these issues and become activists in addressing these topics in public forums.