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考虑统计和互相关特性的多风电场风速数据模拟生成方法 被引量:14
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作者 王松岩 于继来 +1 位作者 李海峰 罗建裕 《电力系统自动化》 EI CSCD 北大核心 2013年第6期18-23,83,共7页
以各风电场历史风速概率密度函数、风速波动统计直方图与互相关系数为约束因素,提出了一种考虑多风电场统计和互相关特性的风速时间序列模拟生成方法。考虑到以月为统计单位的风速常符合多峰混合威布尔分布规律,首先将各风电场每月风速... 以各风电场历史风速概率密度函数、风速波动统计直方图与互相关系数为约束因素,提出了一种考虑多风电场统计和互相关特性的风速时间序列模拟生成方法。考虑到以月为统计单位的风速常符合多峰混合威布尔分布规律,首先将各风电场每月风速分布分解为含不同样本数的单峰威布尔分布;其次生成多个符合特定互相关系数及瑞利分布特性的时间序列,并继续转化为多个符合特定互相关系数及单峰威布尔分布特性的数据序列;拼接各风电场已生成序列并对时间顺序进行前后调整,最终得到各风电场符合多峰混合威布尔分布和波动统计特征及不同风速互相关系数的风速时间序列。算例表明,模拟生成的风速数据可较好地兼顾各风电场自身和相互之间的统计规律。 展开更多
关键词 风速 风电场 威布尔分布 相关性 随机数据生成
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Effect of Huangshukuihua(Flos Abelmoschi Manihot) on diabetic nephropathy:a Meta-analysis 被引量:10
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作者 Sun Qin Yang Gangyi +3 位作者 Zhang Min Zhang Min Chen Shu Chen Pin 《Journal of Traditional Chinese Medicine》 SCIE CAS CSCD 2015年第1期15-20,共6页
OBJECTIVE: To assess the efficacy of Huangshukuihua(Flos Abelmoschi Manihot) on diabetic nephropathy(DN).METHODS: Articles were retrieved from Pub Med,EMBASE, the Cochrane Central Register of Controlled Trials, Web of... OBJECTIVE: To assess the efficacy of Huangshukuihua(Flos Abelmoschi Manihot) on diabetic nephropathy(DN).METHODS: Articles were retrieved from Pub Med,EMBASE, the Cochrane Central Register of Controlled Trials, Web of Science, Chinese Biomedical Literature Database, and China National Knowledge Infrastructure Database, Chinese Evidence-Based Medicine Database, and Wanfang Database. Two reviewers independently reviewed the article. Only randomized controlled trials were included and 27 were identified involving 2239 patients(1143 in the treatment group and 1096 in the control group).RESULTS: Huangshukuihua(Flos Abelmoschi Manihot) had a significant effect on renal function by improving blood urea nitrogen and serum creatinine,reducing urine protein(24-h urine protein, and urinary albumin excretion rate), and improving serum albumin level, compared with the control group.CONCLUSION: Our findings suggest that, although the bioactive ingredients and mechanism underlying renal protection are unknown, the role of Huangshukuihua(Flos Abelmoschi Manihot) in the treatment of DN deserves further investigation. 展开更多
关键词 Diabetic nephropathy Renal insuffi-ciency Flos Abelmoschi Manihot META-ANALYSIS
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