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| Registros recuperados: 37 | |
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| Leynaud, Didier; Sultan, Nabil. |
| Recent geophysical and geotechnical data acquired on the Nice shelf to the east of the 1979 landslide source area, Suggest slow deformations processes which could lead to future catastrophic slope failure. According to these preliminary interpretations, it is of major interest to perform a slope stability evaluation to define the hazard and quantify the danger related to a probable instability on this slope. A probabilistic approach is proposed here using a modified version of the SAMU_3D model, a 3-D slope stability software recently developed by Sultan and others to account for complex geometry. The 3-D analysis is based on the upper bound theorem of plasticity developed by Chen and others. One of the main features of the original model is to allow... |
| Tipo: Text |
Palavras-chave: Probabilistic analysis; Slope stability; Monte Carlo simulation; Shear zone. |
| Ano: 2010 |
URL: http://archimer.ifremer.fr/doc/00002/11290/7828.pdf |
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| Hyytiainen, Kari; Ahtiainen, Heini; Heikkila, Jaakko; Helin, Janne; Huhtala, Anni; Iho, Antti; Koikkalainen, Kauko; Miettinen, Antti; Pouta, Eija; Vesterinen, Janne. |
| This study introduces a prototype model for evaluating policies to abate agricultural nutrients in the Baltic Sea from a Finnish national point of view. The stochastic simulation model integrates nutrient dynamics of nitrogen and phosphorus in the sea basins adjoining the Finnish coast, nutrient loads from land and other sources, benefits from nutrient abatement (in the form of recreation and other ecosystem services) and the costs of agricultural abatement activities. The aim of this study is to present the overall structure of the model and to demonstrate its potential using preliminary parameters. The model is made flexible for further improvements in all of its ecological and economic components. Results of a sensitivity analysis suggest that... |
| Tipo: Working or Discussion Paper |
Palavras-chave: Ecosystem services; Nutrient abatement; Monte Carlo simulation; Recreation; Valuation; Environmental Economics and Policy; Research Methods/ Statistical Methods. |
| Ano: 2009 |
URL: http://purl.umn.edu/49896 |
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| Pedreira, Ernani Macedo; Cardoso, Carlos Estevao Leite; Guerreiro, Mariana Sampaio Silva; Almeida, Otavio Alvares De; Souza, Luiz Francisco Da Silva. |
| O abacaxizeiro é uma planta de clima tropical, que apresenta crescimento adequado em grande parte das condições climáticas encontradas no Brasil, sobretudo na Bahia. No entanto necessita de chuvas bem distribuídas para não prejudicar seu crescimento e/ou desenvolvimento e, conseqüentemente, a produção. Este trabalho objetiva avaliar a viabilidade financeira do sistema de produção da cultura do abacaxi irrigado, em condições de risco. A metodologia utilizada consistiu no levantamento de dados primários, referentes aos vetores de preços dos insumos e dos produtos. Com base na matriz de coeficientes técnicos realizou-se a análise de rentabilidade em condições determinística e em condições de risco, utilizando-se o método de simulação de Monte Carlo. A partir... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Viabilidade econômica; Simulação Monte Carlo; Semi-árido; Economic viability; Monte Carlo simulation; Semi-arid; Crop Production/Industries. |
| Ano: 2008 |
URL: http://purl.umn.edu/112695 |
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| Dlamini, Thula S.; Fraser, Gavin C.G.. |
| The feasibility of springbuck based meat production in the EC Karoo was analysed through a stochastic budgeting model, while overtly taking cost and price risk into consideration. Monte Carlo simulation of a springbuck based meat production enterprise was used to quantify the risks that would be faced by springbuck ranchers. Springbuck ranching has been proven a viable alternative in the production of highly nutritious and healthy meat (venison) that is on high demand in European markets and more recently with a promising and growing local demand as well. The results indicate that in the Eastern Cape Karoo, springbuck ranching for meat production is a viable business. As the call for more environmentally friendlier rangelands utilisation economic systems... |
| Tipo: Journal Article |
Palavras-chave: Game ranching; Springbuck ranching; Meat production; Economic feasibility; Monte Carlo simulation; Livestock Production/Industries. |
| Ano: 2010 |
URL: http://purl.umn.edu/96181 |
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| Ceddia, M. Graziano; Bartlett, Mark; Perrings, Charles. |
| Pollen-mediated gene flow is one of the main concerns associated with the introduction of genetically modified (GM) crops, since growers of GM varieties normally do not take into account its possible impact on conventional and organic growers therefore generating negative externalities. Should a premium for non-GM varieties emerge on the market, 'contamination' with GM pollen would generate a revenue loss for growers of non-GM varieties. The existence of such externalities has led the European Union (EU) to put forward the concept of coexistence in order to guarantee farmers' freedom to plant both conventional and GM varieties without generating economic losses to conventional farmers. The first part of this paper develops a simple economic model analysing... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Coexistence; Pollen-mediated gene flow; Monte Carlo simulation; Crop Production/Industries. |
| Ano: 2008 |
URL: http://purl.umn.edu/44193 |
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| Registros recuperados: 37 | |
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