The penetration of distributed energy resources(DERs) and energy-intensive resources is gradually increasing in active distribution networks(ADNs), which leads to frequent and severe voltage violation problems. As a d...The penetration of distributed energy resources(DERs) and energy-intensive resources is gradually increasing in active distribution networks(ADNs), which leads to frequent and severe voltage violation problems. As a densely distributed flexible resource in the future distribution network, 5G base station(BS) backup battery is used to regulate the voltage profile of ADN in this paper. First, the dispatchable potential of 5G BS backup batteries is analyzed. Considering the spatial-temporal characteristics of electric load for 5G BS, the dispatchable capacity of backup batteries at different time intervals is evaluated based on historical heat map data. Then, a voltage profile optimization model for ADN is established, consisting of 5G BS backup batteries and other voltage regulation resources. In this model, the charging/discharging behavior of backup batteries is based on its evaluation result of dispatchable capacity. Finally, the range of charging/discharging cost coefficients of 5G BS that benefits ADN and 5G operators are analyzed respectively. Further, an incentive policy for 5G operators is proposed. Under this policy, the charging/discharging cost coefficients of 5G BS can achieve a win-win situation for ADN and 5G operators. As an emerging flexible resource in ADN, the effectiveness and economy of 5G BS backup batteries participating in voltage profile optimization are verified in a test distribution network.展开更多
认知语法的研究关注概念内容的认知加工过程,从心理认知的角度出发研究语言和语言结构。文章从“侧面—基体”理论角度出发,基于Langacker对动词和名词的概念语义结构描写,探寻“have a N(v)”结构形成和应用的认知理据。研究发现,“hav...认知语法的研究关注概念内容的认知加工过程,从心理认知的角度出发研究语言和语言结构。文章从“侧面—基体”理论角度出发,基于Langacker对动词和名词的概念语义结构描写,探寻“have a N(v)”结构形成和应用的认知理据。研究发现,“have a N(v)”结构的形成分为两步:(1)完成体动词的名词化,也可称为去时间化和直接辖域同质,形成N(v);(2)have和N(v)的结合,N(v)实现再时间化,形成“have a N(v)”结构。展开更多
该文利用基因表达谱和分子指纹技术研究探讨复方丹参滴丸治疗颈动脉粥样硬化的物质基础和作用机制。首先,收集人颈动脉粥样硬化和正常组织的基因表达谱数据,采用芯片显著性分析(significance analysis of microarray,SAM)方法筛选出差...该文利用基因表达谱和分子指纹技术研究探讨复方丹参滴丸治疗颈动脉粥样硬化的物质基础和作用机制。首先,收集人颈动脉粥样硬化和正常组织的基因表达谱数据,采用芯片显著性分析(significance analysis of microarray,SAM)方法筛选出差异基因;利用DAVID软件对差异基因进行GO分析和KEGG通路分析;为了避免遗漏部分差异表达不显著却有重要生物学意义的基因,文中进行了GSEA分析;将差异基因集输入到Cmap,获得7个负性富集分数较大的药物分子,预示这些药物能逆转调控疾病组织的基因表达谱;最后,根据结构相似的分子具有相似活性的特点,将复方丹参滴丸的336个成分与7个药物分子进行2D分子指纹的相似度比较。结果显示:SAM法筛选得到147个差异基因,其中上调基因60个,下调基因87个。GO分析中,生物过程(biological process)主要涉及生物附着、损伤反应和炎症反应等;细胞组成(cellular component)主要涉及胞膜外区、细胞外隙和质膜等;分子功能(molecular function)主要涉及抗原结合、金属内肽酶活性和多肽结合等。KEGG通路分析主要涉及JAK-STAT,RIG-I样受体和PPAR等信号通路。复方中有10个成分与Cmap筛选出的药物分子具有非常相似的结构(Tanimoto系数均大于0.85),如hexadecane,提示可能是复方丹参滴丸治疗颈动脉粥样硬化的主要药效成分。该方法可用于研究中药复方的药效物质基础和分子作用机制。展开更多
基金supported by the National Natural Science Foundation of China (No.52077017)。
文摘The penetration of distributed energy resources(DERs) and energy-intensive resources is gradually increasing in active distribution networks(ADNs), which leads to frequent and severe voltage violation problems. As a densely distributed flexible resource in the future distribution network, 5G base station(BS) backup battery is used to regulate the voltage profile of ADN in this paper. First, the dispatchable potential of 5G BS backup batteries is analyzed. Considering the spatial-temporal characteristics of electric load for 5G BS, the dispatchable capacity of backup batteries at different time intervals is evaluated based on historical heat map data. Then, a voltage profile optimization model for ADN is established, consisting of 5G BS backup batteries and other voltage regulation resources. In this model, the charging/discharging behavior of backup batteries is based on its evaluation result of dispatchable capacity. Finally, the range of charging/discharging cost coefficients of 5G BS that benefits ADN and 5G operators are analyzed respectively. Further, an incentive policy for 5G operators is proposed. Under this policy, the charging/discharging cost coefficients of 5G BS can achieve a win-win situation for ADN and 5G operators. As an emerging flexible resource in ADN, the effectiveness and economy of 5G BS backup batteries participating in voltage profile optimization are verified in a test distribution network.
文摘认知语法的研究关注概念内容的认知加工过程,从心理认知的角度出发研究语言和语言结构。文章从“侧面—基体”理论角度出发,基于Langacker对动词和名词的概念语义结构描写,探寻“have a N(v)”结构形成和应用的认知理据。研究发现,“have a N(v)”结构的形成分为两步:(1)完成体动词的名词化,也可称为去时间化和直接辖域同质,形成N(v);(2)have和N(v)的结合,N(v)实现再时间化,形成“have a N(v)”结构。
