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面向夏季高温的多城市行业级负荷画像与降温负荷测算

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全球能源互联网 2024年第1期7卷 25-36页

作者：叶强陈吴晓姜志筠蔡雨晴肖雅秋景锐赵英汝国网福建省电力有限公司营销服务中心福建省福州市350001 厦门大学能源学院福建省厦门市361000

夏季高温热浪等极端天气事件日益频发,对空调降温负荷本就较大的部分城市的电力供需平衡造成严峻挑战。产业结构与行业属性的异质使得不同城市不同行业夏季用电负荷的受高温影响程度差异显著。分别选择以服务业、工业和农业为主的厦门... 详细信息

夏季高温热浪等极端天气事件日益频发,对空调降温负荷本就较大的部分城市的电力供需平衡造成严峻挑战。产业结构与行业属性的异质使得不同城市不同行业夏季用电负荷的受高温影响程度差异显著。分别选择以服务业、工业和农业为主的厦门、泉州和南平3个城市的15个高电耗行业为研究对象,基于2021年的海量实测负荷数据与天气数据,分析各城市各行业的负荷时空特性,进一步提出基于负荷解耦的降温负荷测算方法,更加科学地量化多城市行业级降温负荷占比。研究可为福建省及同气候区城市在夏季制定电力负荷管理政策提供参考依据。

关键词： k-means聚类负荷特性负荷解耦降温负荷

Strong motion characteristics of the M_w 6.6 Lushan earthquake,Sichuan,China——an insight into the spatial difference of a typical thrust fault earthquake

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Earthquake Engineering and Engineering Vibration 2015年第2期14卷 203-216页

作者： Hu Jinjun Zhang Wenbo Xie Lili Zhang Qi jiang zhijun Key Laboratory of Earthquake Engineering and Engineering Vibration Institute of Engineering Mechanics China Earthquake Administration College of Earth Science University of Chinese Academy of Science School of Civil Engineering Harbin Institute of Technology

Near-field strong ground motions are useful for engineering seismology studies and seismic design, but dense observation networks of damaging earthquakes are still rare. In this study, based on the strong-motion data from the M w 6.6 Lushan earthquake, the ground motion parameters in different spatial regions are systematically analyzed, and the contributions from different effects, like the hanging-wall effect, directivity effect, and attenuation effect are separated to the extent possible. Different engineering parameters from the observed ground motions are compared with the local design response spectra and a new attenuation relation of Western China. General results indicate that the high frequency ground motion, like the peak ground acceleration, on two sides of the fault plane is sensitive to the hanging-wall effect, whereas the low frequency ground motion, like the long period spectral acceleration, in the rupture propagation direction is affected by the directivity effect. Moreover, although the M w 6.6 Lushan earthquake is not a large magnitude event, the spatial difference of ground motion is still obvious; thus, for a thrust faulting earthquake, in addition to the hanging effect, the directivity effect should also be considered.

关键词： Lushan earthquake near-fi eld ground motion direct

基于故障量相对偏移和改进GWO-SVR的输电线路双端故障测距方法

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武汉大学学报（工学版） 2024年第1期57卷 89-95页

作者：李铁田鹏飞孙振庭姜志筠吴广大包鹏宇胡钋国网辽宁省电力有限公司辽宁沈阳110006 国网大连供电公司辽宁大连160033 武汉大学电气与自动化学院湖北武汉430072

针对基于传统深度学习进行输电线路故障测距时直接采用电压、电流学习而导致模型鲁棒性差的问题,提出了一种采用故障量相对偏移作为故障特征进行学习的方法,该方法显著提高了模型的鲁棒性;针对在通过支持向量回归(support vector regres... 详细信息

针对基于传统深度学习进行输电线路故障测距时直接采用电压、电流学习而导致模型鲁棒性差的问题,提出了一种采用故障量相对偏移作为故障特征进行学习的方法,该方法显著提高了模型的鲁棒性;针对在通过支持向量回归(support vector regression,SVR)进行深度学习时,传统灰狼优化(grey wolf optimization,GWO)算法对初始参数的寻优容易陷入局部最优问题,提出了一种改进的自适应灰狼优化算法以确定SVR的初始参数。对IEEE33节点模型的仿真结果表明,相较于传统方法,该方法的准确性更高,且当线路电压与长度发生改变时,精度相差甚微,具有较好的鲁棒性。

关键词：故障量相对偏移改进灰狼优化算法支持向量回归故障测距

父母养育方式与对立违抗障碍患儿行为问题的关系

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国际精神病学杂志 2024年第2期51卷 430-432页

作者：曾丽蒋志军李廷碧陈秀锦简阳市妇幼保健院简阳641400 简阳市精神病院

目的探讨父母养育方式与对立违抗障碍(Oppositional defiant disorder,ODD)患儿行为问题的关系。方法本研究纳入53例ODD患儿以及53例正常儿童为观察对象,设为ODD组与对照组。比较两组患儿父母养育方式评价量表(Egma Minnen av Bardndosn... 详细信息

目的探讨父母养育方式与对立违抗障碍(Oppositional defiant disorder,ODD)患儿行为问题的关系。方法本研究纳入53例ODD患儿以及53例正常儿童为观察对象,设为ODD组与对照组。比较两组患儿父母养育方式评价量表(Egma Minnen av Bardndosnauppforstran,EMBU)、家长用破坏性行为障碍评定量表(Disruptive behavior disorder rate scale,DBDRS)评分,分析ODD患儿EMBU评分与DBDRS评分的相关性。结果ODD组EMBU量表父亲及母亲偏爱被试、情感温暖与理解、父亲惩罚严厉评分均显著低于对照组(P<0.05);ODD组DBDRS量表注意缺陷、多动冲动、对抗评分均显著高于对照组(P<0.05);ODD患儿EMBU量表父亲及母亲偏爱被试、情感温暖与理解、父亲惩罚严厉评分与DBDRS量表各项评分呈负相关关系(P<0.05)。结论ODD患儿具有明显的父亲及母亲偏爱被试、情感温暖与理解低下等不良养育方式,并且其与行为问题具有明显联系。

关键词：父母养育方式对立违抗障碍行为问题

Water quality and light absorption attributes of glacial lakes in Mount Qomolangma region

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Journal of Geographical Sciences 2013年第5期23卷 860-870页

作者： YAN Huimin YAO zhijun HUANG Heqing jiang Dong DONG Xiaohui DUAN Rui ZHANG Yili Institute of Geographic Sciences and Natural Resources Research CAS Beijing 100101 China

As they are products of glacier movement, the water body composition and water quality attributes of glacial lakes have distinct characteristics compared with inland lakes. Although satellite remote sensing provides an effective approach to monitor water quality, lack of in-situ measurement data on the status and environment surrounding glacial lakes presents a major constraint in relating satellite data to water quality indicators. This study presents findings of a preliminary investigation into water quality attributes of 3 glacial lakes in the Mount Qomolangma region. Suspended particulate matter （SPM）, light absorption attributes of phytoplankton, nonalgal particles （NAP）, and colored dissolved organic matter （CDOM） were measured. The suspended substance concentration varies markedly from 0-320 mg/L. This is considered to reflect differing stages of lake development. l-he chlorophyll concentra- tion is much lower than that found for inland lakes, as landscapes that surround these high altitude lakes have almost no vegetation growth. The phytoplankton and CDOM concentration depend on long-term stability of lake slopes. Given the lack of exogenous and endogenous inputs in the Qomolangma region, CDOM in glacial lakes is significantly lower than in inland lakes. These preliminary findings could support efforts to appraise estimates of water quality parameters using remotely sensed images.

关键词： Mount Qomolangma glacial lake water quality light absorption remote sensing

Biomineralization of phototrophic microbes in silica-enriched hot springs in South China

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Chinese Science Bulletin 2007年第3期52卷 367-379页

作者： PENG XiaoTong ZHOU HuaiYang WU zhijun jiang Lei TANG Song YAO HuiQiang Guangzhou Institute of Geochemistry Chinese Academy of Sciences Guangzhou 510640 China

Microbial mats in two hot springs in South China were sampled for the research of mineralization of microbes and its mechanism by the methods of geology and modern biology. The results show that hot spring microbes have the key capability for enrichment of Si, Al, Fe, Ca and other elements, and the microbes are also crucial for the formation of SiO2, CaCO3, clay and so on. The extracellular polymeric substances (EPS) play important roles in the process of mineralization of hot spring microbes, which mainly takes place in the layer of EPS outside cell wall or sheath of cyanobacteria. The sheath outside cell wall, which keeps the normal metabolism of cyanobacteria during the process of mineralization on its surface, is also considerable for the biomineralization of cyanobacteria. According to structure and mineralization characteristics of two microbial mats, the process of mineralization can be divided into three stages, namely, early surface mineralization, middle degradation mineralization, and late des- quamation of mineral. The above conclusions are significant for comprehension of the process of mineralization, the process of deposition and the preservation of microfossil in modern and ancient extreme environments.

关键词：华南地区富硅温泉光养微生物生物矿化作用藻青菌

An Interview with Wuyutai’s President Sun Danwei

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China & The World Cultural Exchange 2013年第7期79卷 46-47页

作者： jiang zhijun Wuyutai

From a single centennial shop to over 300 chains studding northern China and radiating nationwide,the past fifteen years witnessed Wuyutai’s rapid development and grand achievements,its shared journey with alliance businesses and its eflforts to deepen and widen tea *** and wherever,first-class products and services are essential to *** into the future,Wuyutai will continue to treat customers as God,prioritize quality,and try its best to produce good *** will carry on the China’s No.1 tea brand,draw development blueprints and write more legends of its own.

关键词：单位总裁茶叶市场中国北方天花板

维普期刊数据库评论

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隧道运营期衬砌背后空洞检测与治理对策

重庆建筑 2024年第S1期23卷 46-47+51页

作者：蒋志军黄榆皓毛斌斌袁油新重庆市建筑科学研究院有限公司重庆市建设工程质量检验测试中心有限公司西南交通大学土木工程学院

隧道运营期可供检测和后期缺陷治理的时间短，如何准确找出缺陷并快速治理是一个亟待解决的问题。该文依托重庆某隧道工程实例，采用不同方法对空洞进行详细检测，并提出针对性的治理措施。工程实践表明：隧道衬砌背后空洞的检测中，应... 详细信息

隧道运营期可供检测和后期缺陷治理的时间短，如何准确找出缺陷并快速治理是一个亟待解决的问题。该文依托重庆某隧道工程实例，采用不同方法对空洞进行详细检测，并提出针对性的治理措施。工程实践表明：隧道衬砌背后空洞的检测中，应重点查明衬砌有效厚度，为后续缺陷治理提供依据，可和敲击法、地质雷达法和钻孔开仓法等方法同步进行；治理方面，灌浆料在本次隧道运营期衬砌背后空洞治理中应用效果良好。可为今后类似隧道缺陷检测和处治提供参考。

关键词：隧道空洞检测处治对策

Innovation Brings New Life to Time-honored Brand

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China & The World Cultural Exchange 2014年第7期80卷 30-31页

作者： jiang zhijun

Qianmen Street was the most vibrant shopping and entertainment district in old times Beijing. Today, many time-honored brands still run business here, among which Wuyutai, a century-old tea brand, is an exemplar company. Its innovative store ＂Oriental Yutai＂, located at the west end of Qianmen Street, attracts hundreds of customers and tourists every day.

关键词：创新字号生命品牌