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Registros recuperados: 11
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A Composite Fuzzy Indicator for Assessing Farm Household Potential for Non-farm Income Diversification AgEcon
Fritzsch, Jana.
European politicians encourage the income diversification of rural households through various measures. Although being aware of farm households’ potential for non-farm income diversification seems important for finely-targeting such policy measures, no attempt has thus far been made to summarise the various determinants of income diversification in a single figure. This contribution aims to close this gap. A composite fuzzy indicator that measures farm household potential for non-farm income diversification is developed and applied to 1,053 farm households in Bulgaria, Hungary, Poland, Romania, and Slovenia. The indicator summarises the incentives of and capacities for non-farm income diversification on the individual household member level, and on the...
Tipo: Conference Paper or Presentation Palavras-chave: Composite indicator; Fuzzy logic; Rural non-farm income diversification; Transition countries; Consumer/Household Economics; C65; J24; Q12; R23.
Ano: 2011 URL: http://purl.umn.edu/114349
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A new Corydoras Lacépède, 1803 (Siluriformes: Callichthyidae) from the rio Araguaia basin, Brazil, with comments about Corydoras araguaiaensis Sands, 1990 Neotropical Ichthyology
Tencatt,Luiz Fernando Caserta; Britto,Marcelo Ribeiro de.
ABSTRACT A new species of Corydoras is described from the rio Araguaia basin, Goiás, Brazil. The new species can be distinguished from its congeners by presenting the following features: infraorbital 1 with very large ventral laminar expansion; infraorbital 2 contacting compound pterotic; flanks densely covered by irregular black spots; and ventral surface of trunk densely covered by coalescent relatively well-developed platelets. It is also discussed the possibility that C. araguaiaensis comprehends a complex of species.
Tipo: Info:eu-repo/semantics/article Palavras-chave: C65; Corydoradinae; Corydoras sp. "Guaraná"; Goiás State; Taxonomy.
Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252016000100201
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Analysing Farmers' Decision-Making Process Face to the Mid-Term Review of the Common Agricultural Policy in the Alentejo region of Portugal AgEcon
Serrao, Amilcar; Coelho, Luis.
This paper describes an experiment that was carried out in order to examine the decision making process of farmers in the Alentejo dryland region of Portugal. Cumulative Prospect Theory allows modeling the Alentejo dryland farmers' decision process, because when they decide what crops and livestock activities will produce the different results are appraised relatively to the initial wealth, which permits its appraisal in terms of gains and of losses. An inquiry is developed to study the Alentejo dryland farmers' preferences, which intend to determine risk preferences through a set of games. A discrete sequential stochastic programming model is developed to examine farmers' decision-making process face to the mid-term review of the Common Agricultural...
Tipo: Conference Paper or Presentation Palavras-chave: Cumulative Prospect Theory; Discrete Sequential Stochastic Programming; Farm Management; C65; D81.
Ano: 2005 URL: http://purl.umn.edu/19266
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Analysis of ranked ordered data when there are complete and partial ranking AgEcon
Pandit, Mahesh; Paudel, Krishna P.; Dunn, Michael A..
Many methods are available to analyze rank ordered data. We used a spectral density analysis to identify most preferred options of Formosan Subterranean Termites (FST) control as ranked by Louisiana homeowners. Respondents are asked to rank four termite control methods form the most preferred option to the least preferred option. Spectral analysis of both complete and partial ranked data indicates that the most preferred termite control choice is a relatively cheap ($0.13 per square foot) option of a Liquid treatment.
Tipo: Conference Paper or Presentation Palavras-chave: Complete and Partial ranked data; FST; Spectral analysis; Research Methods/ Statistical Methods; C65.
Ano: 2010 URL: http://purl.umn.edu/56430
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Evaluacion comparativa multifuncional de sistemas agrarios mediante AHP: aplicacion al olivar ecologico, integrado y convencional en Andalucía AgEcon
Lopez, Carlos Parra; Calatrava-Requena, Javier; Gimenez, Tomas De Haro.
Aunque el concepto de multifuncionalidad está plasmado, implícita o explícitamente, en el diseño de las políticas agrarias actuales, su consideración a la hora de analizar y evaluar sistemas agrarios es aún relativamente escasa en la literatura. Para tal fin se propone utilizar el Proceso Analítico Jerárquico (Analytic Hierarchy Process - AHP), técnica de decisión multicriterio discreta que se utiliza para la toma de decisiones complejas. La metodología AHP es expuesta junto con un procedimiento propuesto para medir el acuerdo relativo entre decisores y la uniformidad de las alternativas en la toma de decisiones en grupo. Finalmente, AHP es aplicado a la evaluación del olivar ecológico, integrado y convencional de Andalucía considerando criterios de...
Tipo: Journal Article Palavras-chave: Multifunctionality; Analytic Hierarchy Process; AHP; Multicriteria decision making; Group decision making; Relative agreement indices; Relative uniformity indices; Olive grove; Agricultural and Food Policy; Q01; C65; Q50.
Ano: 2005 URL: http://purl.umn.edu/28771
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How Far Can Poultry Litter Go? A New Technology for Litter Transport AgEcon
Carreira, Rita I.; Young, Kenneth B.; Goodwin, Harold L., Jr.; Wailes, Eric J..
Exporting northwest Arkansas excess turkey and broiler litter to partially fertilize nutrient-deficient cropland in eastern Arkansas can be more cost effective than to supply all crop nutrients with chemical fertilizer only, given current high fertilizer prices. Cost savings are greater if litter is baled in ultraviolet resistant plastic and transported via truck, since backhaul opportunities reduce truck rates, or alternatively, if raw litter is shipped via a truck-barge combination. Rice is the crop that allows for greater savings according to a mathematical programming model implemented in General Algebraic Modeling System (GAMS).
Tipo: Journal Article Palavras-chave: Baling poultry litter; Barge transportation; Cost minimization; Manure management; Mathematical programming; Nutrient surplus; Poultry litter; Truck transportation; Agribusiness; Crop Production/Industries; C61; C65; Q12; Q30; Q53.
Ano: 2007 URL: http://purl.umn.edu/37050
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Multi-criteria analysis for the impact assessment of food safety policies: The case of EU regulation on dietary arsenic AgEcon
Ragona, Maddalena; Mazzocchi, Mario; Alldrick, A.J..
Developments in knowledge concerning the toxicology and occurrence of dietary arsenic suggest that levels of exposure in some groups of the population within the EU are a cause for concern. This applies also in the case of individual Member States where local regulatory limits exist. The situation is such that some foods on the market are already the subject of consumer advice provided by government agencies. In the light of these considerations, some have suggested that Member States’ legislation concerning arsenic in foods should be modified and harmonised to reflect such developments. An evaluation of alternative policy initiatives is considered in this work. It employed a computer-based, fuzzy multi-criteria impact assessment tool for the...
Tipo: Presentation Palavras-chave: Multi-criteria analysis; Fuzzy; Regulatory impact assessment; Food safety regulations; Arsenic; Food Consumption/Nutrition/Food Safety; C02; C65; D81; Q18.
Ano: 2012 URL: http://purl.umn.edu/124122
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Non-farm income diversification of rural farm households in Central and Southeastern Europe: an application of fuzzy set theory AgEcon
Fritzsch, Jana; Buchenrieder, Gertrud; Mollers, Judith.
A fuzzy logic model for quantifying farm households’ potential for non-farm income diversification is developed and applied to 1,077 farm households in Bulgaria, Hungary, Poland, Romania, and Slovenia. About three quarters of households have a diversification potential, but not all households use it. An analysis of diversification potential and diversification behaviour shows that there are seven household types in the sample. Not all development options, i.e. farm development, farm exit, or starting non-farm employment, are equally suitable for all households thus fine targeting of policy measures according to the household type could be important for policy makers.
Tipo: Conference Paper or Presentation Palavras-chave: Rural development; Non-farm rural employment diversification; Fuzzy logic; Transition countries; Community/Rural/Urban Development; C65; D33; J24; Q12.
Ano: 2010 URL: http://purl.umn.edu/95321
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Sensitivity of welfare effects estimated by equilibrium displacement model: a biological productivity growth for semi-subsistence crop in Sub-Sahara African market with high transactions costs AgEcon
Takeshima, Hiroyuki.
This paper discusses the application of the equilibrium displacement model (EDM) to estimate ex-ante the welfare effects of biological productivity growth for semi-subsistence crop and its impact on poverty reduction. The conventionally used EDM is compared with an alternative model (alternative EDM) that reflects arguably more realistic assumptions for African semi-subsistence crops, such as the shape and shift of supply curve, significant margins due to high transportation costs between farmgate and consumption market, as well as between different consumption markets, and the degree of precisions of estimated structural parameters. The application to the dataset for Benin cassava farmers provides an example that the conventional EDM may significantly...
Tipo: Working or Discussion Paper Palavras-chave: Equilibrium displacement model; Pivotal shift; Cassava; Semi-subsistence; Market margins; Double buffering; Agricultural and Food Policy; Consumer/Household Economics; Food Security and Poverty; International Development; Productivity Analysis; Research Methods/ Statistical Methods; C65; D13; D31; D60; Q11; Q12.
Ano: 2009 URL: http://purl.umn.edu/49287
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Subsurface Drip Irrigation Versus Center-Pivot Sprinkler for Applying Swine Effluent to Corn AgEcon
Carreira, Rita I.; Stoecker, Arthur L.; Epplin, Francis M.; Hattey, Jeffory A.; Kizer, Michael A..
A risk-averse irrigated corn producer would be better off choosing the more expensive subsurface drip irrigation (SDI) over center-pivot sprinkler (CPS), given limited aquifer life and swine effluent and urea fertilization. A stochastic optimization using EPIC data maximized expected utility of 100 years' worth of net revenues for a quarter section. Phosphorus accumulation was more likely with the CPS than with the SDI but soil nitrogen was constant under both systems. SDI conserves more water than CPS per acre but depletes the aquifer faster because a greater area is irrigated. These results were invariant in the sensitivity analysis.
Tipo: Journal Article Palavras-chave: Aquifer depletion; Center-pivot sprinkler irrigation; Certainty equivalent; Corn irrigation; Mathematical programming; Risk; Stochastic optimization; Subsurface drip irrigation; Crop Production/Industries; C61; C65; Q12; Q30; Q53.
Ano: 2006 URL: http://purl.umn.edu/43783
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The Environment and Directed Technical Change AgEcon
Acemoglu, Daron; Aghion, Philippe; Bursztyn, Leonardo; Hemous, David.
This paper introduces endogenous and directed technical change in a growth model with environmental constraints. A unique final good is produced by combining inputs from two sectors. One of these sectors uses "dirty" machines and thus creates environmental degradation. Research can be directed to improving the technology of machines in either sector. We characterize dynamic tax policies that achieve sustainable growth or maximize intertemporal welfare. We show that: (i) in the case where the inputs are sufficiently substitutable, sustainable long-run growth can be achieved with temporary taxation of dirty innovation and production; (ii) optimal policy involves both “carbon taxes” and research subsidies, so that excessive use of carbon taxes is avoided;...
Tipo: Working or Discussion Paper Palavras-chave: Environment; Exhaustible Resources; Directed Technological Change; Innovation; Environmental Economics and Policy; O30; O31; O33; C65.
Ano: 2010 URL: http://purl.umn.edu/92839
Registros recuperados: 11
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