世界経済・社会統計 = World development indicators

计量经济分析 = Econometric analysis

Statistical Databases

https://www.wikigender.org/wp-content/uploads/files/IFPRIDP00882.pdf

Promising Approaches to Address the Needs of Poor Female Farmers: Resources, Constraints, and Interventions

https://reliefweb.int/sites/reliefweb.int/files/resources/BC4F6F3129C7772B8525775100588D7F-Full_Report.pdf

Impact of Farmer Field Schools on Agricultural Productivity and Poverty in East Africa

Among processed and manufactured dairy products marketed in the United States, yogurt has one of the shortest histories and sharpest growth trends. To examine the socioeconomic factors associated with U.S. at-home yogurt demand, a demand system is used to analyze three yogurt products. Findings suggest that own-prices have negative effects and total expenditure has a positive effect on U.S. yogurt demand. Demographic factors do not have a large impact.

A Cross-Sectional Analysis of U.S. Yogurt Demand

In this article, we consider the impact of European Union (EU) export subsidy reductions on the U.S. dairy trade. We assume reductions of 36% similar to the 1995 World Trade Organization agreement. The price substitutability between U.S. and EU dairy products is estimated using a Rotterdam-type production model. Past analyses have suggested that EU export subsidy reductions will increase U.S. dairy exports because the removal of EU subsidies will raise EU export dairy prices, rendering U.S. dairy products more competitive on world markets. This is partially true for nonfat dry milk, where our projections indicate an increase of 4.6% in U.S. exports. U.S. cheese, butter, and whey exports, on the other hand, rise by only 0.2, 0.1, and 0.2%, respectively. The main reason for the relatively modest gains is that the U.S. and EU dairy products are independent, not substitutes, for one another in a majority of the countries studied. [JEL classifications: Q17, Q18, F53] © 2008 Wiley Periodicals, Inc.

The impact of EU export subsidy reductions on U.S. dairy exports

Estimating import demand is particularly difficult when trade is seasonal because prices do not exist for observations with no recorded transaction. Fresh apple imports in the United Kingdom provide a perfect case of this particular problem due to periodic trade. In this study, the differenced version of the almost ideal demand system is employed for estimating import demand by source and an iterative procedure is developed for deriving choke prices (prices at which imports are zero) and import demand estimates. The appeal of this procedure is that the final estimates and choke prices are not sensitive to the starting values used for the initial estimation. When comparing the results of the choke price procedure to a more traditional approach of eliminating zeros by aggregating across countries, significant differences emerge. Results clearly show that the aggregate estimates do not adequately reflect the pattern of UK imports from seasonal suppliers.

Estimating import demand in the presence of seasonal trade and unobserved prices

This study estimates U.S. demand for imported apple juice by exporting country. Given that China has emerged as the top supplier to the U.S., we focus on the impact of China on competing exporting countries. Results show that U.S. imports from Argentina, Chile, and the rest of the world (ROW) were significantly responsive to apple juice prices in China. U.S. imports from China were significantly responsive to prices in Argentina, Chile and the ROW as well; however, the responsiveness of imports from China to apple juice prices in these countries was relatively smaller than the responsiveness of imports from these countries to Chinaâ€™s price.

The demand for imported apple juice in the United States

The absolute price version of the Rotterdam model was used in the estimation of U.S. catfish demand where catfish was differentiated by product cut (whole, fillet, and other) and product form (fresh and frozen). Likelihood ratio tests were used to determine the importance of product form in demand (product form aggregation). Likelihood ratio tests were also used to determine if fresh products were separable from frozen products (product form separability). Product form aggregation was rejected at a probability of 0.999, suggesting that fresh and frozen catfish products are not homogenous. The hypothesis, no product form separability, failed to be rejected at the 0.05 significance level, but was rejected at the 0.01 significance level. Test results suggest that it is more acceptable to focus on a single product group (e.g., frozen products) than to assume that catfish products are perfectly aggregatable across product forms. [JEL classifications: Q11, Q13, Q22]. © 2009 Wiley Periodicals, Inc.

Andrew Muhammad

Papers

A Cross-Sectional Analysis of U.S. Yogurt Demand

The impact of EU export subsidy reductions on U.S. dairy exports

Estimating import demand in the presence of seasonal trade and unobserved prices

The demand for imported apple juice in the United States

The importance of product cut and form when estimating fish demand: the case of U.S. Catfish