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| Registros recuperados: 37 | |
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| PACHECO,PAULO S.; RESTLE,JOÃO; PASCOAL,LEONIR L.; VAZ,FABIANO N.; VAZ,RICARDO Z.; VALENÇA,KAROLINE G.; OLEGARIO,JANAINE L.. |
| The objective of this study was to evaluate the risk of feedlot finishing of steers (22.8 months) and young steers (15.2 months), using or not a correlation between the random input variables (data collected from 2004 to 2010) in the simulation of the Net Present Value (NPV) financial indicator. The animals were fed a diet containing roughage:concentrate ratio of 60:40 for 34 and 143 days, respectively, until they had reached a predetermined slaughter weight of 430 kg. For the NPV simulation, Latin Hypercube sampling was used, with 2000 interactions. The stochastic dominance analysis, test of differences between pairs of curves of cumulative distributions and sensitivity analysis were carried out. The NPV simulation using the correlation resulted in the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Investment analysis; Investment projects; Monte Carlo simulation; Nonparametric statistics; Probabilistic analysis; Production of young bulls. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652014000200945 |
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| Rochet, Marie-joelle; Rice, Jake C.. |
| Simulation-based management strategy evaluations are increasingly developed and used for science advice in support of fisheries management, along with risk evaluation and decision analysis. These methods tackle the problem of uncertainty in fisheries systems and data by modelling uncertainty in two ways. For quantities that are difficult to measure accurately or are inherently variable, variables are replaced by probability distributions, and system dynamics are simulated by Monte Carlo simulations, drawing numbers from these distributions. For processes that are not fully understood, arrays of model formulations that might underlie the observed patterns are developed, each is assumed successively, and the results of the corresponding arrays of model... |
| Tipo: Text |
Palavras-chave: Uncertainty; Risk estimates; Monte Carlo simulation; Management strategy evaluation. |
| Ano: 2009 |
URL: http://archimer.ifremer.fr/doc/2009/publication-6361.pdf |
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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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| Registros recuperados: 37 | |
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