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Large eddy simulation of city micro-atmospheric environment

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Science China(Physics,Mechanics & Astronomy) 2008年第8期51卷 933-944页

作者： CUI GuiXiang shi ruifeng WANG Zhishi XU ChunXiao ZHANG ZhaoShun Department of Engineering Mechanics Tsinghua UniversityBeijing 100084China Faculty of Science and Technology Macao UniversityMacao 999078China

Air quality is one of the important conditions for a better residence life in the populated urban area and it is closed related to the micro-atmospheric environment. Atmospheric environment is controlled by air motion with multi-scales in the city,while air flows in the residence area are of micro-scale atmospheric motion. This paper introduces a modern numerical simulation method,i.e. large eddy simulation(LES) ,for studying micro-atmospheric flows in the city residence area. For the complex flow features in the residence area,the proper application of LES is studied and various numerical methods are compared in order to investigate their effects on the prediction accuracy of micro-atmospheric flows,for instance,roughness elements and immersed boundary method for complex terrain,different subgrid models and so on. The wind field(including turbulence properties) and contaminant dispersion are computed by the proposed method for a model and a realistic residence area,and the numerical results are in good agreement with the experimental measurements.

关键词： micro-atmospheric environment turbulence dispersion large eddy simulation

RNF126 Quenches RNF168 Function in the DNA Damage Response

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Genomics, Proteomics & Bioinformatics 2018年第6期16卷 428-438页

作者： Lianzhong Zhang Zhenzhen Wang ruifeng shi Xuefei Zhu Jiahui Zhou Bin Peng Xingzhi Xu College of Life Sciences Capital Normal University Faculty of Life Sciences Tangshan Normal College Guangdong Key Laboratory for Genome Stability & Disease Prevention Shenzhen University Health Science Center

DNA damage response(DDR) is essential for maintaining genome stability and protecting cells from tumorigenesis. Ubiquitin and ubiquitin-like modi?cations play an important role in DDR, from signaling DNA damage to mediating DNA repair. In this report, we found that the E3 ligase ring ?nger protein 126(RNF126) was recruited to UV laser micro-irradiation-induced stripes in a RNF8-dependent manner. RNF126 directly interacted with and ubiquitinated another E3 ligase, RNF168. Overexpression of wild type RNF126, but not catalytically-inactive mutant RNF126(CC229/232 AA), diminished ubiquitination of H2 A histone family member X(H2AX),and subsequent bleomycin-induced focus formation of total ubiquitin FK2, TP53-binding protein1(53 BP1), and receptor-associated protein 80(RAP80). Interestingly, both RNF126 overexpression and RNF126 downregulation compromised homologous recombination(HR)-mediated repair of DNA double-strand breaks(DSBs). Taken together, our ?ndings demonstrate that RNF126 negatively regulates RNF168 function in DDR and its appropriate cellular expression levels are essential for HR-mediated DSB repair.

关键词： DNA repair DNA damage response Ubiquitination RNF126 RNF8 RNF168

Mining cotton fiber strength candidate genes based on transcriptome mapping

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Chinese Science Bulletin 2009年第24期54卷 4651-4657页

作者： LIU HengWei WANG XingFen PAN YuXin shi ruifeng ZHANG GuiYin MA ZhiYing Key Laboratory of Crop Germplasm Resources of Hebei Province Agricultural University of Hebei Baoding 071001 China College of Life Science Yangtze University Jingzhou 434025 China

Cotton fiber strength is mainly determined during the secondary cell wall (SCW) thickening stage. In 24―25 days post anthesis (DPA) of SCW thickening stage, cDNA-amplified fragment length polymorphism (AFLP) was carried out to construct fiber transcriptome groups. Based on these groups, cotton fiber strength candidate genes were detected by composite interval mapping (CIM) through quantitative trait locus (QTL) scanning. The mapping population was the interspecific backcross BC1 of Gossypium hirsutum × G. barbadense. One hundred and fifteen BC1 plants were used for group construction with 102 qualified absence/presence polymorphic transcript-derived fragments (TDFs) from G. barbadense, and 78 TDFs were assigned into eight transcriptome groups that gave a total length of 462.63 centimorgans (cM). Two significant QTLs, FS1 and FS2, were detected and explained 16.08% and 15.87% of fiber strength variance, respectively. Of the six TDFs co-segregating with FS1 and FS2, except one encoding an unknown protein, five targeted putative phosphatidylinositol kinase, trehalose-6 phosphate synthase, MADS transcription factor, cellulose synthase-like protein and phenylalanine ammonia lyase, respectively. These functional genes were involved in plant cell wall morphogenesis or cellulose synthesis metabolism processes, and were considered as the candidate genes controlling cotton fiber strength.

关键词：纤维比强度基因转录扩增片段长度多态性棉花映射候选人数量性状位点复合区间作图法

Annotated survey and perspectives on rail transport energy system RAMS evaluation technology

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Green Energy and Intelligent Transportation 2024年第3期3卷 75-90页

作者： ruifeng shi Lingzhi Zhang Feng Lin Jin Ning Limin Jia Kwang Y.Lee School of Control and Computer Engineering North China Electric Power UniversityBeijing 102206China China Institute of Energy and Transportation Integrated Development Beijing 102206China State Key Lab of Rail Traffic Control&Safety Beijing Jiaotong UniversityBeijing 100044China Department of Electrical and Computer Engineering Baylor UniversityWacoTX 76798USA

The rail transit system plays a crucial role in modern *** the increasing demand for clean and green energy in the transport sector,its energy system is expected to achieve low-carbon and highly efficient energy utilization in rail ***,the gradual development of the rail transport energy system has led to an increase in its complexity,and the rising difficulty of system assessment has faced the limitations of traditional assessment ***,it is essential to develop effective assessment *** paper begins by providing a systematic review of the development status of Reliability,Availability,Maintainability and Safety(RAMS)assessment and analyzing the shortcomings of traditional RAMS assessment technology in the context of rail transit energy ***,based on the four fundamental properties of RAMS,it summarizes the current state of key assessment technologies in the field of rail ***,the paper delves into the challenges and potential solutions concerning the implementation of RAMS assessment technology for rail transit energy ***,the paper offers an outlook on the future development of RAMS assessment for rail transport energy *** comprehensively analyzing these aspects,the paper aims to contribute valuable insights into optimizing the rail transit energy system,promoting its sustainable and efficient operation in the context of clean and green energy utilization.

关键词： Integration of energy and transportation RAMS evaluation Rail transit energy system

上古汉语的~*T-系、~*L-系声母及相关古文字问题补说

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中国语文 2020年第1期 56-65,127页

作者：施瑞峰香港中文大学中文系

中古端、知、章组阻塞音声母有上古*T-系、*L-系等几类来源,不同来源的谐声系列会呈现出不同的中古声母分布规律,即不同的谐声类型。本文首先回顾已有的构拟工作,指出上古*T-系声母与*L-系声母谐声类型之间的区别,再结合这些结论与相关... 详细信息

中古端、知、章组阻塞音声母有上古*T-系、*L-系等几类来源,不同来源的谐声系列会呈现出不同的中古声母分布规律,即不同的谐声类型。本文首先回顾已有的构拟工作,指出上古*T-系声母与*L-系声母谐声类型之间的区别,再结合这些结论与相关的古文字资料,为“秃”“戴”重新构拟上古声母。

关键词：上古音谐声类型 *T-系声母 *L-系声母

Study on Evolutionary Algorithm Online Performance Evaluation Visualization Based on Python Programming Language

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Journal of Systems Science and Information 2014年第1期2卷 86-96页

作者： ruifeng shi Ning ZHANG Runhai JIAO Zhenyu ZHOU Li ZHANG North China Electric Power University High-Tech Research and Development Center Ministry of Science and Technology School of Electric & Electronics Engineering School of Control & Computer Engineering

Evolutionary computations are kinds of random searching algorithms derived from natural selection and biological genetic evolution behavior. Evaluating the performance of an algorithm is a fundamental task to track and find the way to improve the algorithm, while visualization technique may play an important act during the process. Based on current existing algorithm performance evaluation criteria and methods, a Python-based programming tracking strategy, which employs 2-D graphical library of python matplotlib for online algorithm performance evaluation, is proposed in this *** and displaying the performance of genetic algorithm(GA) and particle swarm optimization(PSO) optimizing two typical numerical benchmark problems are employed for verification and validation. Results show that the tracking strategy based on Python language for online performance evaluation of evolutionary algorithms is valid, and can be used to help researchers on algorithms’ performance evaluation and finding ways to improve it.

关键词： evolutionary algorithm online performance evaluation Python language genetic algorithm particle swarm optimization

基于多维度培养质量评价的电力特色自动化类专业工程人才培养改革实践

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中国电机工程学报 2023年第23期43卷 9352-9361页

作者：房方吕游师瑞峰华北电力大学控制与计算机工程学院北京市昌平区102206

新时代高等工程教育肩负着培养具备知识更新能力、岗位适应能力、职业拓展能力的工程人才的重任,构建以多维度培养质量评价为基础的特色化人才培养体系是重中之重。该文梳理国内外工程人才培养的相关进展,分析了人才培养质量评价要素,... 详细信息

新时代高等工程教育肩负着培养具备知识更新能力、岗位适应能力、职业拓展能力的工程人才的重任,构建以多维度培养质量评价为基础的特色化人才培养体系是重中之重。该文梳理国内外工程人才培养的相关进展,分析了人才培养质量评价要素,设计定量评价与定性评价相结合的人才培养质量评价指标体系,建立起持续改进机制。在评价与改进的基础上,构建以学生能力培养为中心、符合工程教育认证标准的电力特色自动化类专业课程体系,完善理论课程与实践课程设置,厘清课程与学生能力培养之间的映射关系,形成培养“解决复杂工程问题”能力的教学布局。以华北电力大学自动化类工程人才培养为例,介绍改革实践成效,希望为行业特色工程人才培养提供借鉴与参考。

关键词：工程人才培养质量评价体系电力特色自动化类专业课程体系工程教育专业认证

Study on EV Charging Station Location Planning Based on the Load Balance Principle with Agent-based AnyLogic Simulation

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Study on EV Charging Station Location Planning Based on the ...

第26届中国控制与决策会议

作者： ruifeng shi shiyao Zheng Chaoqun Zhang Li Zhang School of Control and Computer Engineering North China Electric Power University

ISBN: (纸本)9781479937097

Electrification of the transportation sector is gradually becoming a global trend due to the environmental benefits of electric vehicles（EV）, which not only helps to reduce greenhouse gas emissions, but also helps to reduce the burden of fossil fuel resources need. In order to analyze and evaluate the performance of different EV charging station location schemes, a pre-built AnyLogic Urban Dynamics model with considering population, business, housing, and transport infrastructure is employed to simulate the private EV electricity demand per hour in this paper. Furthermore, two typical EV charging station location schemes for Beijing City’s urban area is adopted to illustrate the performance difference between these models, in which the plan A showed a serious load unbalance problem by contrast to the plan B, which further demonstrates the value of our simulation model on helping the decision maker with such issues. We can find that the optimal EV charging station will avoid the waste of resource and meet the charging requirement.

关键词： Electric vehicles Charging station location planning Agent-based modeling AnyLogic

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説“朕”“灷”

文史 2022年第2期 5-44页

作者：鄔可晶施瑞峰復旦大學出土文獻與古文字研究中心香港中文大學中國語言及文學系中国

從殷墟甲骨文、商周族名金文等有關資料看,“朕”是從本象一人“撑篙行舟”之形的“”的表意初文簡省分化出來的一個字。“”的表意初文在卜辭中多用引申義“循行”,少數或用本義;時代較早的組肥筆類卜辭《合》20610的“朕”,字形和用... 详细信息

從殷墟甲骨文、商周族名金文等有關資料看,“朕”是從本象一人“撑篙行舟”之形的“”的表意初文簡省分化出來的一個字。“”的表意初文在卜辭中多用引申義“循行”,少數或用本義;時代較早的組肥筆類卜辭《合》20610的“朕”,字形和用法上都與“”有密切聯繫。“灷”字是象一人“具設”“同”中插入璋一類玉器之形的簡體,在西周金文中或用爲讀“纂”之字的聲旁,應是古書訓“具”的“撰”的表意初文。故“灷”及从“灷”聲之字可以音近而在戰國文字資料中用爲“尊”“寸”“遜”等。“送”有可能也是从“灷(撰)”聲的。從古音關係、字形源流和用字情況來看,“朕”字本不从“灷”,更不以“灷”爲聲;“灷”也不从“丨(針)”聲。

关键词：朕灷鍼古音通假

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