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多尺度数据驱动的石化污水可生化性评价 被引量:5
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作者 韩红桂 张家昌 +2 位作者 伍小龙 王梓先 乔俊飞 《控制工程》 CSCD 北大核心 2022年第4期617-626,共10页
针对石化污水可生化性难以获得实时准确评价的问题,提出了一种多尺度数据驱动的石化污水可生化性评价方法。首先,通过分析石化污水组分和水质数据特点,解析水质数据的时间尺度特征以及与可生化性指标的关联关系;其次,设计基于主元分析... 针对石化污水可生化性难以获得实时准确评价的问题,提出了一种多尺度数据驱动的石化污水可生化性评价方法。首先,通过分析石化污水组分和水质数据特点,解析水质数据的时间尺度特征以及与可生化性指标的关联关系;其次,设计基于主元分析法的多尺度特征提取算法,获取石化污水可生化性的特征变量;然后,构建基于模糊最小最大神经网络的智能评价模型,实现对石化污水可生化性的实时准确评价;最后,将提出的评价方法应用于实际石化污水处理过程中。验证结果表明,所提方法能够实现对石化污水可生化性进行实时准确的评价。 展开更多
关键词 石化污水 动态特征提取 可生化性评价 模糊最小最大神经网络
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Assessment of Climate Change Variability Impacts on Wheat and Barley Production in Palestine
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作者 Imadeddin Albaba 《Journal of Agricultural Science and Technology(A)》 2018年第2期59-67,共9页
The study aimed at addressing climate variability impacts on wheat and barley production in Palestine. A combination of literature survey and multiple semi-structured interviews with officials from the Palestinian gov... The study aimed at addressing climate variability impacts on wheat and barley production in Palestine. A combination of literature survey and multiple semi-structured interviews with officials from the Palestinian governmental agriculture related agencies and active non-governmental organizations (NGOs) used for gathering information on wheat and barley production in Palestine. The gathered data along with information and subsequent results prevailed that the West Bank since the 1970s has experienced a significant decrease in winter rainfall. Across 15 sites, growing season rainfall (September to May) decreased by an average of 11% and the sum of rainfall in September and October decreased by 45%. Despite the large decline in rainfall, yields based on the actual weather data did not fall. These results were due to the rainfall changes mainly occurring in September and October, a period when rainfall often is less than crop demand. The study arrived at conclusion based on the study results that climate change variabilities have differential impacts on the yield growth of wheat and barley. However, both rainfed dependent crops are adversely affected by the current climate trends. The yields of barley and wheat are decreasing due to increased temperature and decreased precipitation. 展开更多
关键词 Climate change barely WHEAT Palestine
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