Expert systems in agriculture and long-term research

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This paper presents briefly the achievements and results of the five years research program (92 to 97) on expert systems in agriculture in Egypt as expert system technology was identified as a useful tool for technology transfer in the extension services. The research program has three objectives: developing tools and methodologies to facilitate building expert systems for different Crops, buil...

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The spatial concentration of ideas is central to economic geography. Yet, how proximity to research affects productivity is not well studied. We use the late 19th century establishment of agricultural experiment stations in the United States to estimate the importance of proximity to research for productivity growth. Our analysis of county-level agricultural census data from 1870 to 2000 reveal...

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ژورنال

عنوان ژورنال: Canadian Journal of Plant Science

سال: 1996

ISSN: 0008-4220,1918-1833

DOI: 10.4141/cjps96-109