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Risk Assessment and Management of Electricity Markets: A Review with Suggestions

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CSEE Journal of Power and Energy Systems 2021年第6期7卷 1322-1333页

作者： Minglei bao Yi Ding Xiaoxin Zhou Chao Guo Changzheng Shao College of Electrical Engineering Zhejiang UniversityHangzhou 310027China China Electric Power Research Institute Beijing 100192China Chongqing University Chongqing 401331China

Power industry deregulation has changed the determination of electricity prices from administration approval to market *** by multiple random factors,the market prices may fluctuate sharply or significantly increase under extreme conditions,jeopardizing the normal operation of *** order to effectively deal with market risks,it is essential to develop the corresponding risk-control mechanisms,especially for spot market ***,this paper presents an overview on the risk assessment and management schemes which are widely used in the electricity ***,the key issues for evaluating market risks through inherent uncertainties and market power are summarized,including analysis models and quantitative ***,a comprehensive review of risk management and market supervision in typical electricity markets is ***,a multi-time risk-control framework utilized by regulators is introduced to demonstrate the available schemes to reduce market *** addition,the various derivative contracts and portfolio optimizations are reviewed to help market participants hedge against market ***,suggestions for the development of risk management measures in spot market pilots are *** summarized experience in this paper can provide useful references and guidelines for developing risk-control mechanisms in electricity markets.

关键词： Electricity markets market power risk assessment risk management risk sources

Synthesis of perovskite BaTaO_(2)N with low defect by Zn doping for boosted photocatalytic water reduction

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Journal of Energy Chemistry 2021年第12期30卷 358-363,I0009页

作者： Yunfeng bao Hai Zou Nengcong Yang Gao Li Fuxiang Zhang State Key Laboratory of Catalysis iChEMDalian Institute of Chemical PhysicsChinese Academy of SciencesDalian National Laboratory for Clean EnergyDalian 116023LiaoningChina University of Chinese Academy of Sciences Beijing 100049China

Perovskite BaTaO_(2) N(BTON) is one of the most promising photocatalysts for solar water splitting due to its wide visible-light absorption and suitable conduction/valence bands,but it still confronts the challenge of high defect density causing decreased charge separation as well as photocatalytic *** this work,we develop a simple zinc doping strategy to greatly suppress its defect density and promote its water reduction *** is found that the defect formation on the nitrided Ba(Zn_(1/3-x)Ta_(2/3))O_(3-y)N_z(denoted as BZTON hereafter) will be greatly inhibited when the Zn-doped Ba(Zn_(1/3)Ta_(2/3))O_(3)(BZTO) oxide is used as the nitridation *** structural characterizations and discussion demonstrate that the effective inhibition of Ta^(5+)into Ta^(4+)defects in BZTON mainly results from the easy reduction of zinc ions into metal and further the evaporation of zinc metal under the thermal ammonia ***,this simply doping methodology can be easily extended into the synthesis of SrTaO_(2) N(STON) with extremely low defect density,demonstrating its *** from the successful control to the defect density,the as-obtained BZTON photocatalyst exhibits remarkably promoted charge separation as well as water reduction activity to produce hydrogen with respect to the pristine *** work may provide an alternative avenue to prepare oxynitride semiconductors with reduced defect density for promoted solar energy conversion.

关键词： Oxynitride Photocatalyst Water splitting Defect density Zinc doping

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氮沉降增加对中国森林生态系统的生态效应

林业科技通讯 2024年第1期 36-41页

作者：刘蓉李涛琴包崇银西南林业大学昆明650224

随着工业的快速发展和化学肥料的大量使用,大气中氮含量逐渐增加,大气氮沉降现象越来越明显,至今仍为研究热点。森林生态系统是陆地上最重要生态系统,氮沉降会影响其中许多的生态过程。通过综合文献中的实验和观测数据,综述了中国森林... 详细信息

随着工业的快速发展和化学肥料的大量使用,大气中氮含量逐渐增加,大气氮沉降现象越来越明显,至今仍为研究热点。森林生态系统是陆地上最重要生态系统,氮沉降会影响其中许多的生态过程。通过综合文献中的实验和观测数据,综述了中国森林对长期氮沉降增加的响应。重点从森林生长和碳固存、土壤生物地球化学特征和酸化、植物养分化学计量学、林下生物多样性等方面讨论了氮沉降对中国森林的影响。此外还介绍了氮沉降增加对中国森林生态系统研究存在的问题和未来研究的重点。考虑到未来中国森林氮沉降的组成和氮沉降负荷的变化趋势,进一步研究氮沉降对森林生态系统的影响将对中国森林的管理策略具有重要意义。

关键词：氮沉降森林生态效应研究现状

Student Performance Prediction Based on Behavior Process Similarity

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Chinese Journal of Electronics 2020年第6期29卷 1110-1118页

作者： bao Yunxia LU Faming WANG Yanxiao ZENG Qingtian LIU Cong College of Computer Science and Engineering Shandong University of Science and Technology College of Computer Science and Technology Shandong University of Technology

Student performance prediction plays an important role in improving education *** that students,exercise-answering processes exhibit different characteristics according to their different performance levels,this paper aims to mine the performance-related information from students’ exercising logs and to explore the possibility of predicting students’ performance using such process-characteristic information.A formal model of student-shared exercising processes and its discovery method from students’ exercising logs are *** similarity measures between students’ individual exercising behavior and student-shared exercising processes are presented.A prediction method of students’ performance level considering these similarity measures is explored based on classification *** experiment on real-life exercise-answering event logs shows the effectiveness of the proposed prediction method.

关键词： computer aided instruction data mining educational courses real-life exercise-answering event logs similarity measures student-shared process-characteristic information performance-related information performance levels behavior process similarity student performance prediction prediction method Process mining Process similarity Process discovery Student performance prediction

Influence of Ultrasonic Vibrations on the Static Friction Characteristics of a Rubber/Aluminum Couple

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Chinese Physics Letters 2011年第12期28卷 157-159页

作者： CHENG Ting-Hai GAO Han bao Gang School of Mechatronics Engineering Harbin Institute of TechnologyHarbin 150080

A novel ultrasonic vibration approach is introduced into a chloroprene rubber/aluminum friction couple for improving the static friction properties between rubber and *** to the test results without vibrations,the static friction force of a chloroprene rubber/aluminum couple decreases observably,leading to the ultimate displacement of *** values of the static friction force and ultimate displacement can be ultimately reduced to 23.1%and 50%of those without ultrasonic vibrations,respectively.

关键词： friction rubber couple

基于RDBN深度学习算法的窃电监测系统设计

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电器与能效管理技术 2024年第5期 67-74页

作者：陈志谦鲍光海方艳东福州大学电气工程与自动化学院福建福州350108 浙江天正电气股份有限公司浙江乐清528300

窃电行为不仅会造成电网非技术性损耗增加,而且可能因操作不当影响电网设备的运行安全和窃电者的人身安全。针对当前电网在窃电检测方面存在的稽查难度大、检测效率低等问题,设计了窃电监测系统。配套监测装置可灵活安装在供电线路上,... 详细信息

窃电行为不仅会造成电网非技术性损耗增加,而且可能因操作不当影响电网设备的运行安全和窃电者的人身安全。针对当前电网在窃电检测方面存在的稽查难度大、检测效率低等问题,设计了窃电监测系统。配套监测装置可灵活安装在供电线路上,使用电流互感器取能,实时采集线路电流,利用4G模块将数据传输至云服务器,在上位机软件中采用实值深度置信网络(RDBN)算法对数据进行分析。仿真和实验测试表明,RDBN算法对窃电状态的识别准确率达到98.15%,监测系统能实时获取并分析监测数据,标记可疑窃电线路,降低稽查难度,提高检测效率。

关键词：非技术性损耗窃电检测电流互感器取能实值深度置信网络

社会主义生态文明与共同富裕:契合机理和共进路径研究

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城市与环境研究 2024年第1期 107-116页

作者：曹得宝孙熙国北京大学马克思主义学院 100871 北京大学武汉人工智能研究院北京大学习近平新时代中国特色社会主义思想研究院

社会主义生态文明与共同富裕是我国全面建设社会主义现代化国家新征程中的两大重要战略,二者都有着丰富的理论内涵和行动逻辑。社会主义生态文明与共同富裕之间存在着密切的契合机理,具体包括:目标主题统一,同为中国式现代化的题中应有... 详细信息

社会主义生态文明与共同富裕是我国全面建设社会主义现代化国家新征程中的两大重要战略,二者都有着丰富的理论内涵和行动逻辑。社会主义生态文明与共同富裕之间存在着密切的契合机理,具体包括:目标主题统一,同为中国式现代化的题中应有之义;政治逻辑一致,均坚持和完善党的领导;具体路径协作,均主张推进国家治理体系与治理能力的现代化;行动主体联动,均主张发挥人民群众的力量。推动社会主义生态文明与共同富裕在实践中的协同共进需要加快发展方式的绿色转型,优化生态领域的分配格局,创新生态产品价值实现路径,推进山海协作工程。同时,我们也应认识到社会主义生态文明与共同富裕二者关系之间也存在着一定的张力。

关键词：社会主义生态文明共同富裕契合机理共进路径

Maize biology: From functional genomics to breeding application

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Journal of Integrative Plant Biology 2019年第6期61卷 654-657页

作者： Jianbing Yan bao-Cai Tan National Key Laboratory of Crop Genetic Improvement Huazhong Agricultural University(HZAU) School of Life Sciences Shandong University

Maize (Zea mays L.) is one of the most important crops globally for food, feed, and fuel. Maize grain production has increased more than eight-fold in the past century to a current annual global production of one billion tons (http://***/). By 2050, it will require 70% more food than today's consumma-tion since the population size will increase to 9 billions. It is estimated that maize will contribute more than half of the increased demand for cereals in the future. Thus, there is a tremendous innovation stream for maize breeders to utilize in their attempts to substantially increase maize productivity in an en-vironmentally sensitive way (FAO 2009).

关键词： Maize biology functional genomics breeding application^FA

长链非编码RNA PTENP1通过miR-3611/PTEN基因途径调控宫颈癌进程的分子机制研究

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中国医药导报 2024年第3期21卷 19-27页

作者：包利利赵达俞岩周俏苗海南医学院第一临床学院海南海口570216 海南省妇女儿童医学中心妇科海南海口570100

目的探讨长链非编码RNA PTENP1 (以下简称“PTENP1”)在宫颈癌细胞增殖、迁移和侵袭的分子机制。方法选取2019年1月至2022年12月海南省妇女儿童医学中心诊断的54例的癌组织与癌旁组织,另选取宫颈癌细胞系(HeLa、SiHa、C33A、Caski)和... 详细信息

目的探讨长链非编码RNA PTENP1 (以下简称“PTENP1”)在宫颈癌细胞增殖、迁移和侵袭的分子机制。方法选取2019年1月至2022年12月海南省妇女儿童医学中心诊断的54例的癌组织与癌旁组织,另选取宫颈癌细胞系(HeLa、SiHa、C33A、Caski)和正常宫颈上皮细胞系(H8),采用实时荧光定量PCR、蛋白质印迹法检测PTENP1、miR-3611、PTEN基因、PTEN蛋白水平。选取合适的宫颈癌细胞系,比较PTENP1在细胞质和细胞核中的表达情况,并进一步将其分为空白组(无处理)、pcDNA3.1组(转染pcDNA3.1)、pcDNA3.1-PTENP1组(转染pcDNA3.1-PTENP1)、NC组(阴性对照,转染模拟物或抑制剂NC)、miR-3611抑制剂组(转染miR-3611抑制剂)、pcDNA3.1-PTENP1+NC组(转染pcDNA3.1-PTENP1和NC)和pcDNA3.1-PTENP1+miR-3611 mimics组(转染pcDNA3.1-PTENP1和miR-3611模拟物)。比较空白组、pcDNA3.1组、pcDNA3.1-PTENP1组PTENP1、miR-3611、PTEN基因、PTEN蛋白及上皮间质转化的相关指标,采用细胞活力检测及流式细胞仪检测细胞增殖和凋亡情况;比较空白组、NC组、miR-3611抑制剂组miR-3611、PTEN基因、PTENP1水平;比较pcDNA3.1-PTENP1+NC组和pcDNA3.1-PTENP1+miR-361 1 mimics组的细胞增殖情况及上皮间质转化的相关指标。采用双萤光素酶报告基因及RNA下拉实验验证miR-3611与PTENP1、PTEN基因的靶向关系。结果癌组织PTENP1、PTEN基因、PTEN蛋白水平低于癌旁组织,miR-3611水平高于癌旁组织(P<0.05)。HeLa、SiHa、C33A、Caski细胞PTENP1、PTEN基因、PTEN蛋白水平低于H8细胞,miR-3611水平高于H8细胞(P<0.05),后续实验选择HeLa、Caski细胞进行,PTENP1在HeLa、Caski细胞质中高表达。pcDNA3.1-PTENP1组PTENP1、凋亡率、上皮钙黏素、PTEN基因高于空白组,细胞增殖活力(培养48、72、96h)及ZEB1、Snail、波性蛋白、miR-3611低于空白组(P<0.05)。miR-3611抑制剂组miR-3611低于空白组,PTEN基因、PTENP1高于空白组(P<0.05)。pcDNA3.1-PTENP1+miR-361 1 mimics组细胞增殖活力(培养48、72、96 h)、上皮钙黏素低于pcDNA3.1-PTENP1+NC组,ZEB1、Snail、波性蛋白高于pcDNA3.1-PTENP1+NC组(P<0.05)。野生型miR-3611转染生物素标记的HeLa、Caski细胞的PTENP1水平高于转染生物素标记的空白细胞和突变型miR-3611转染生物素标记的细胞,分别转染PTENP1或PTEN野生型和miR-3611模拟物的293T细胞的相对萤光活性低于仅转染PTENP1或PTEN野生型的293T细胞(P<0.05)。结论 PTENP1通过竞争性结合miR-3611调控PTEN表达影响宫颈癌细胞增殖、迁移和侵袭。

关键词：长链非编码RNA 微RNA 竞争性结合机制 PTEN基因宫颈癌