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| Registros recuperados: 1.893 | |
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| Musser, Wesley N.; McCarl, Bruce A.; Smith, G. Scott. |
| A model with omitted resource constraints is suggested as an alternative to a risk aversion model for explaining economic behavior. This paper uses two standard mathematical programming models to further explore this issue. One model is a standard profit maximization linear programming model and the other is a risk averse quadratic programming model with part of the constraints deleted. Theoretical investigation of these models demonstrates that risk aversion can substitute for omitted resource constraints. A small empirical model is then solved under both formulations. With resource constraints deleted, positive risk aversion is necessary to obtain a similar enterprise organization as under profit maximization with complete constraints. These two... |
| Tipo: Journal Article |
Palavras-chave: Risk and Uncertainty. |
| Ano: 1986 |
URL: http://purl.umn.edu/29787 |
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| Childs, Nathan W.; Hammig, Michael D.. |
| An· econometric partial equilibrium trade model of the U.S. corn, wheat, soybean, cotton, and tobacco market is developed for the yearly periods 1968-1983. The effect of real exchange rates, real price, and demand factors on the exports of each commodity is examined to test the hypothesis that monetary factors can affect the agricultural sector. An examination of the elasticities of real price, real exchange rate, and real income indicate that an extremely inelastic response to both price movements and exchange rate adjustments. Foreign buying power is the strongest explanatory variable. An exchange rate linkage with the agricultural sector is not proven. |
| Tipo: Working or Discussion Paper |
Palavras-chave: International Relations/Trade. |
| Ano: 1986 |
URL: http://purl.umn.edu/117656 |
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| SIMPOSIO SOBRE RECURSOS NATURAIS E SOCIO-ECONOMICOS DO PANTANAL, 1., 1984, Corumba.. |
| A publicacao do evento apresenta temas sobre recursos naturais, mostrando a pesquisa desenvolvida no Pantanal, enfocando o sistema climatico, hidrologia, aspectos geologicos e geomorfologicos, solos, vegetacao, flora, fauna, os problemas e perspectivas socio-economicos, propostas de politicas de desenvolvimento da regiao. Sumario - O sistema climatico do Pantanal: compreensao do sistema a definicao de prioridades de pesquisa climatologica. Condicoes climaticas para a regiao do Pantanal Mato-Grossense. Hidrologia da Bacia do Alto Paraguai. A dinamica das inundacoes no Pantanal. Aspectos geologicos do Pantanal Mato-Grossense e de sua area de influencia. Contribuicao da geomorfologia para o conhecimento e valorizacao do Pantanal. Solos do Pantanal... |
| Tipo: Documentos (INFOTECA-E) |
Palavras-chave: Congresso; Mato Grosso do Sul; Recurso socio-economico; Recursos hidricos; Natural resource; Socio-economic resource; River; Congress.; Climatologia; Fauna; Flora; Geomorfologia; Geologia; Recurso Natural; Solo; Vegetação.; Brazil; Pantanal; Climatology; Geomorphology; Geology; Soil; Vegetation.. |
| Ano: 1986 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/787689 |
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| Davoult, Dominique; Richard, Alain. |
| Le site des Caps est une zone littorale bien particulière, bordure française du goulet du Pas-de-Calais, à la fois rétrécissement géographique important entre la France et l'Angleterre, et limite entre la Manche Orientale et le sud de la Mer du Nord. Une zone d'extraction de granulats marins a été exploitée entre 1971 et 1980 au large de ce site. Cette exploitation a été arrêtée en 1982 par arrêté préfectoral pour des raisons d'atteinte à l'environnement et d'entrave à la pêche. La présente étude a pour but de décrire les peuplements au large du site des Caps, englobant le quadrilatère d'exploitation, de faire ressortir leurs caractéristiques. et d'essayer d'apprécier l'impact dû à l'extraction. Deux problèmes majeurs sont soulevés : d'une part, aucune... |
| Tipo: Text |
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| Ano: 1986 |
URL: http://archimer.ifremer.fr/doc/00036/14722/12027.pdf |
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| Eynaud, P. |
| Studying the reasons behind the decline in small-scale fisheries at Saint Pierre and Miquelon (SPM) requires assessing this decline. Between 1950 and 1985, the number of vessels utilised in small-scale fisheries dropped by a factor of seven and the mean age of fishers increased by 13 years. Individual catches have nevertheless remained stable and have even increased slightly since 1963. Can it be deduced that the crisis in small-scale fisheries is only due to a problem of fish stocks and the adjustment of the number of fishers to stock availability? Must the causes of decline be sought in the development of industrial fisheries? In the increase in costs? Or in market studies? By placing SPM in its geographical and historical context, these questions take... |
| Tipo: Text |
Palavras-chave: SEM. |
| Ano: 1986 |
URL: http://archimer.ifremer.fr/doc/1986/rapport-4088.pdf |
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| Perry, Gregory M.; Rister, M. Edward; Richardson, James W.; Grant, Warren R.. |
| Whole farm simulation analysis and econometric techniques are employed in an analysis of crop rotations and tenure arrangement strategies. The FLIPSIM model is used to analyze a representative Texas Upper Gulf Coast rice and soybean farm. Probit analysis is then used to determine the impact of net cash farm income, land tenure, and crop rotation on probability of survival. Results suggest that, although the simulation model is useful in providing information on the effect at the farm level of following the different strategies, probit results provide greater understanding into the returns and risk inherent to each strategy. |
| Tipo: Journal Article |
Palavras-chave: Crop Production/Industries. |
| Ano: 1986 |
URL: http://purl.umn.edu/29779 |
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| van Poollen, H. Walter; Leung, PingSun. |
| A dynamic programming approach was used to evaluate the effect of changing the feed input to product price relationship on the beef production management decision process. The dynamic programming model consists of nine submodels describing and analyzing the time-dependent beef production management decision process. The model incorporates biological functions and economic principles. Results clearly showed the importance of the feed-beef price relationships in management decision making. Optimal beef production management strategies were generally consistent with beef production management practices followed in Hawaii under those feed-beef price relationships. |
| Tipo: Journal Article |
Palavras-chave: Livestock Production/Industries. |
| Ano: 1986 |
URL: http://purl.umn.edu/32538 |
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| Registros recuperados: 1.893 | |
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