Resultados de búsqueda - "linear programming"

Constraints on oxen cultivation in the Sahel por Delgado, Christopher L., McIntire, John

“…Ox‐driven technology in the Sahel may be more labor shifting than labor saving. Linear programming models indicate a prohibitive opportunity cost of extra labor required for team maintenance and use on small, rainfed farms growing traditional millets and sorghums in Upper Volta. …”
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Impact of crop producer price changes on quantities of woodland products collected by communal households in Chivi, Zimbabwe por Mutamba, M.

“…This study uses linear programming approaches to understand how households best allocate scarce resources in meeting their requirements for food, energy, construction materials and cash, from woodland resources and agricultural production. …”
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Income effects of fodder and herd management on small-scale milk producers in the northern Peruvian Andes por Bernet, T., León Velarde, C.U.

“…A linear programming model was used to analyze the effects of different herd and fodder management levels on agricultural income of small-scale mountain dairy farmers in northern Peru. …”
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A diagnostic model framework for water use in rice-based irrigation systems por Hundertmark, Wilfried, Abdourahmane, A.T.

“…The paper presents a framework for water use in rice-based irrigation systems, which is based on linear programming (LP). This framework intends to facilitate improved understanding of a system's internal and external conditions and the constraints to productive use of the available land and water resources, and thereby create a reference for the assessment of the physical, economic and environmental performance of a given system. …”
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Natural resource management in the hillsides of Honduras: bioeconomic modeling at the micro-watershed level por Barbier, Bruno, Bergeron, Gilles

“…To do so, we developed a bioeconomic model that combines dynamic linear programming with a biophysical model, then applied this model to a typical microwatershed. …”
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Getting incentives right? a comparative analysis of policy instruments for livestock waste pollution abatement in Yucatan, Mexico por Drucker, Adam G.

“…Building on the extensive theoretical and empirical work regarding the cost-minimizing properties of economic instruments, this article describes and analyses the Mexican legislation relevant to the treatment/disposal of pig slurry in the state of Yucatan. Using a linear programming model to determine the optimal level of pig production and abatement processes simultaneously, different policy instruments and scenarios are compared. …”
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On‐site economic evaluation of soil conservation practices in Honduras por Carcamo, J. A.

“…Factors affecting the cost to the farmer of employing soil erosion reduction strategics are examined for the steep hillsides near Tegucigalpa, Honduras. Linear programming and MOTAD are used to examine these factors. …”
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Quantitative methods for policy analysis course notes por Howitt, Richard E., Msangi, Siwa, MacEwan, Duncan

“…Computational methods such as linear programming, calibrated optimization, and dynamic programming allow us to calibrate parameters using limited data and specify a framework that is consistent with economic theory that we can then use to simulate the interaction of complex resource policies.…”
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Analysing optimum and alternative farm plans for risk averse grain crop farmers in Kaduna state, northern Nigeria por Olarinde, L.O., Manyong, Victor M., Okoruwa, V.O.

“…The paper applied an analytical procedure that made use of the conventional linear programming, and the Target Minimization of total absolute deviations (Target MOTAD) as the major tools. …”
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Complementarity of value chain analysis, consumption patterns and nutrition in the design of sustainable, effective and efficient food-system-based interventions por Domínguez Salas, Paula, Hasler, B., Ferguson, E., Cornelsen, L., Alonso, Silvia, Fèvre, Eric M., Rushton, Jonathan, Grace, Delia, Alarcón, Pablo

“…Findings and interpretations: Results in children showed 42% were stunted and 74% were anaemic; in women, 7.4% had a low and 29% a high- body-mass index and 26% were anaemic. The linear programming analysis identified specific food-based interventions that would ensure, for example, dietary adequacy for all nutrients except for iron in women, requiring among others increases of intake of milk and other animal sources. …”
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Income and employment generation in Kenyan small-scale agriculture. por Mukhebi, A.W.

“…For each group, a representative farm was developed. Three linear programming models were constructed for each representative farm. …”
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Economic opportunities for smallholders to combine pulpwood trees and food crops por Menz, K.M., Grist, P.

“…The modelling framework was conventional linear programming. The interplay of land area availability, land and labour productivity, and interest rates lead to a relatively complex picture, even for the simplified farming systems that were examined. …”
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Agent-based spatial models applied to agriculture: a simulation tool for technology diffusion, resource use changes and policy analysis por Berger, T.

“…The individual choice of the farm‐household among available production, consumption, investment and marketing alternatives is represented in recursive linear programming models. Adoption constraints are introduced in form of network‐threshold values that reflect the cumulative effects of experience and observation of peers’ experiences. …”
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Agricultural intensification by smallholders in the Western Brazilian Amazon: from deforestation to sustainable land use por Vosti, Stephen A., Witcover, Julie, Carpentier, Chantal Line

“…It introduces a farm-level bioeconomic linear programming model to illuminate how such factors influence land use over time, taking into account soil fertility shifts and exploring policy and technology options that give farmers incentives to slow deforestation without decreasing farm household income. -- Authors' Abstract…”
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Ex ante analysis of new bean technology in Southern Huila por Arcia, G, Sanders, J.H.

“…This paper is an ex ante analysis of the effect of this new technology on farmers` income, taking into account factors that could potentially limit their adoption. Linear programming, with activities including both current and potential technologies, was used. …”
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Seasonality and nutrition-sensitive farming in rural Northern Ghana por de Jager, Ilse, van de Ven, Gerrie W. J., Giller, Kenneth E., Brouwer, Inge D.

“…We investigated what rural households in Northern Ghana would need to grow to ensure year-round availability of a nutrient adequate diet or the income required to fulfil their dietary needs. We applied linear programming to model different scenarios and interventions. …”
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Efficiency of small-scale irrigation farmers in Northern Ghana: A data envelopment analysis approach por Adams, Abdulai, Balana, Bedru, Lefore, Nicole

“…First, using a linear programming method, efficiency scores of the irrigated vegetable farmers were measured using the data envelopment analysis approach. …”
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Integrating socio-economic and biophysical assessments using a land use allocation model por Du, Y., Huffman, T., Toure, S., Feng, F., Gameda, Samuel, Green, M., Liu, T., Shi, X.

“…To develop the procedures, we used linear programming to optimize crop production for large areas under current commodity prices and land productivity ratings and then allocated the results to much smaller soil‐landscape polygons based on land capability. …”
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Vulnerability of smallholder farmers to ENSO-related drought in Indonesia por Keil, A., Teufel, Nils, Gunawan, D., Leemhuis, C.

“…Using an interdisciplinary modelling approach that combines regression analysis with linear programming (LP) and stochastic simulation, and integrates climatic and hydrologic modelling results, the objective of the present study is to assess the impact of El Niño on agricultural incomes of smallholder farmers in Central Sulawesi, Indonesia, and to derive suitable crop management strategies to mitigate income reductions. …”
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Ekonomiskt optimal slaktvikt för slaktsvin por Lindahl, Ebba, Skog, Gustav

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