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Abstract Currently Unavailable.

This paper describes major external changes to the U.S. public agricultural research system over 1988-1999; describes the reactions of the public agricultural research system to the external changes, specifying the innovations that have occurred over the last decade; and draws conclusions about the...

Preface by T. W. Schultz. Under contract with Iowa State Press for a revision, 2004. A 9-chapter book (about 200 pages) that documents the evolution, development, and economic impacts of public agricultural research, especially the state agricultural experiment stations over the past 150 years....

This study presents new estimates of supply and demand elasticities for U.S. multiproduct cash grain farms and estimates of input and output bias effects caused by public and private crop research, extension, and farmers' schooling. The study also shows that the social rate of return to public...

Abstract Currently Unavailable.

Agricultural research and extension programs have been built in most of the world's economies. A substantial number of economic impact studies evaluating the contributions of research and extension programs to increased farm productivity and farm incomes and to consumer welfare have been...

The Green Revolution was a singular event in world history; because of the Green Revolution, world prices for all crops declined. The agricultural mechanization issue was also driven by intellectual property rights (i.e., the right to patent products), as was the agricultural chemical...

This study uses a cross-section of Brazilian municipal data in an attempt to estimate the impact of climate changes on the pattern of disease morbidity and infant mortality. Brazil is a country with climate conditions that range from tropical rain forest to temperate savanna regions in the...

We present new data on research spillovers between nations and between industries, discussing some theoretical and measurement issues. Our technique makes patent data more useful and practical for economic analysis, allowing analysis of the industries of manufacture and sectors of use for...