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区域需水长系列模拟方法研究
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作者 顾文权 邵东国 蒋玉芳 《中国农村水利水电》 北大核心 2014年第4期105-107,111,共4页
需水长系列模拟精度的高低直接影响水资源规划与管理的效果。针对月需水相关系数难以模拟的问题,引入Thomas-Fiering模型和基于cholesky因子分解的多维随机模拟方法,分别建立了区域需水长系列模拟模型,并对模拟结果在反应月需水的均值... 需水长系列模拟精度的高低直接影响水资源规划与管理的效果。针对月需水相关系数难以模拟的问题,引入Thomas-Fiering模型和基于cholesky因子分解的多维随机模拟方法,分别建立了区域需水长系列模拟模型,并对模拟结果在反应月需水的均值、方差及相关系数特征进行了验证,结果表明两模型均能较好反应需水的各项统计参数,为需水长系列统计模拟提供了新思路与方法。 展开更多
关键词 需水模拟 thomas-fiering 多维随机模拟
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Determining Cost-Efficiency and Regulation Policy for Water Transfer of Lake Balaton by Stochastic Dynamic Programming
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作者 Balint Muzelak Laszlo Koncsos 《Journal of Environmental Science and Engineering(B)》 2012年第5期586-592,共7页
The present research is based upon a comprehensive survey which discusses the slightly tolerable water level of Balaton between 2000 and 2003. The low water level of the extreme period caused considerable problems in ... The present research is based upon a comprehensive survey which discusses the slightly tolerable water level of Balaton between 2000 and 2003. The low water level of the extreme period caused considerable problems in recreation. Our goal was to investigate the possible water transfer policies and the water level regulation policy of Lake Balaton by applying the dynamic programming of Markov chains. This iteration supports the cost-benefit analysis of different scenarios and also provides information about the best water governing policy. As a basis of our scientific analysis, Markov chains were created by ARMA (autoregressive moving average) synthetic data generator. Profit was joined to each transition-probability for the economic analysis. In our case the profit was negative, because the harmful effects of the low water level should be estimated, which is based on the calculated willingness-to-pay for improving the water quality of Lake Balaton. In addition, the profit includes the cost of different water supplement scenarios. After computer programming, the method proved to be an efficient tool to buttress the cost-benefit analysis of water supplement scenarios. The result highlights the importance of further climate change monitoring. Calculation confirmed water transfer to be cost-effective, yet scenarios with less ecological risk are also effective, thus preferable. 展开更多
关键词 Climate change cost-benefit analysis Markovian decision process thomas-fiering ARMA model water transfer.
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