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中心节点距离可控的加权树状网络一致性分析

杭州电子科技大学学报（自然科学版） 2024年第1期44卷 92-96页

作者：李达权孙伟刚杭州电子科技大学理学院浙江杭州310018

选取一类加权树状网络为研究对象,中心节点之间的距离受参数控制。利用其规则的拓扑结构和矩阵知识,得到了网络一致性的精确表达式,着重分析网络权重因子、中心节点之间的距离对网络一致性的影响。研究发现权重越大、两个中心节点之间... 详细信息

选取一类加权树状网络为研究对象,中心节点之间的距离受参数控制。利用其规则的拓扑结构和矩阵知识,得到了网络一致性的精确表达式,着重分析网络权重因子、中心节点之间的距离对网络一致性的影响。研究发现权重越大、两个中心节点之间的距离越短,网络一致性越好。

关键词：网络一致性树状网络网络权重因子

Multidisciplinary and multiscale nanoscience research roadmap based on large scientific facilities

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Science China Chemistry 2024年第8期67卷 2497-2523页

作者： Yuan Zeng Shuhan Zhang Yuecong Guo Yalin Cong Xu Ding Peihua Li Yunxiang Lin Wenzhi Ren Hui Su weigang sun Liuxin Xu Guikai Zhang Shihua Chen Yu Chen Weiren Cheng Shengqi Chu Yong Guan Jinru Han Jie Lin Hengjie Liu Zheyi Liu Pan Luo Fanchun Meng Sicong Qiao Zongyin Song Ying Wang Zhao Wu Chenyu Yang Meng Yang Shirui Yang Zi Yin Zhibin Yin Pengjun Zhang Hongyu Zhang Pingping Zheng Jia Zhou Wanlin Zhou Pengfei An He Cheng Chunhai Fan Xingjiu Huang Yong Lei Lina Li Mu Li Qinghua Liu Shuming Peng Li Song Zhihu sun Yangchao Tian Fangjun Wang Lihua Wang Liming Wang Shiqiang Wei Aiguo Wu Chunlei Xiao Xueming Yang Panchao Yin Jing Zhang Mingxin Zhang Yaling Wang Chunying Chen CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety New Cornerstone Science LaboratoryNational Center for Nanoscience and TechnologyBeijing 100190China University of Chinese Academy of Sciences Beijing 100049China National Synchrotron Radiation Laboratory University of Science and Technology of ChinaHefei 230029China Institute of Solid State Physics Hefei Institutes of Physical ScienceChinese Academy of SciencesHefei 230031China Institutes of Physical Science and Information Technology Anhui UniversityHefei 230601China Ningbo Key Laboratory of Biomedical Imaging Probe Materials and Technology Zhejiang International Cooperation Base of Biomedical Materials Technology and ApplicationCAS Key Laboratory of Magnetic Materials and DevicesNingbo Cixi Institute of Biomedical EngineeringZhejiang Engineering Research Center for Biomedical MaterialsNingbo Institute of Materials Technology and EngineeringChinese Academy of SciencesNingbo 315201China Advanced Energy Science and Technology Guangdong Laboratory Huizhou 516000China College of Chemistry and Chemical Engineering Hunan Normal UniversityChangsha 410081China State Key Laboratory of Luminescent Materials and Devices South China Advanced Institute for Soft Matter Science and TechnologySouth China University of TechnologyGuangzhou 510640China Beijing Synchrotron Radiation Facility Institute of High Energy PhysicsChinese Academy of SciencesBeijing 100049China CAS Key Laboratory of Separation Sciences for Analytical Chemistry Dalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116023China State Key Laboratory of Molecular Reaction Dynamics Dalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116023China Institute of Advanced Science Facilities Shenzhen 518107China State Key Laboratory of Coal Conversion Institute of Coal ChemistryChinese Academy of SciencesTaiyuan 030001China State Key Laboratory of Particle Detection and Electronics Institute of High Energy PhysicsChinese Acade

With the advancement of modern science and technology, large scientific facilities are increasingly oriented toward demand and application, and can be used for basic research as well as serving multiple disciplines. Developing large scientific facilities and related analytical technologies enhances understanding of large scientific facilities and popularizes their application in research across multiple disciplines. The combination of light or neutron sources from large scientific facilities and advanced analytical technologies can be achieved for materials structure information, dynamics study of chemical reactions, high dissociation of biomolecules, 3D visualization of energy materials or biological samples, etc. We first introduce the progress of domestic large scientific facilities of synchrotron radiation(SR) and free electron lasers(FELs) with different wavelengths and neutron *** further discuss the comparison between Chinese and typical foreign facilities in X-ray radiation from X-ray tubes, synchrotrons, X-ray FELs, and neutron sources based on physical parameters of light and neutron sources. In addition, we focus on the technological progress and perspectives combined with advanced X-ray radiation and neutron sources of large scientific facilities in China, especially in the nanoscience fields of energy catalysis and biological science. We hope that this roadmap will provide references on technology and methods to experimental users, as well as prospects for future development of technologies based on large research infrastructure facilities. Comprehensive studies and guidelines for basic research to practical application in various disciplines can be made with the assistance of large scientific facilities.

关键词： large scientific facilities synchrotron radiation FEL light sources neutron sources spectroscopic analysis methods X-ray imaging techniques structural information chemical dynamics

Impact of distance between two hubs on the network coherence of tree networks

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信息与电子工程前沿:英文版 2023年第9期24卷 1349-1356页

作者： Daquan LI weigang sun Hongxiang HU School of Sciences Hangzhou Dianzi UniversityHangzhou 310018China

We study the impact of the distance between two hubs on network coherence defined by Laplacian *** coherence is a measure of the extent of consensus in a linear system with additive *** obtain an exact determination of coherence based on the distance,we choose a family of tree networks with two hubs controlled by two *** the tree’s regular structure,we obtain analytical expressions of the coherences with regard to network parameters and the network *** then demonstrate that a shorter distance and a larger difference in the degrees of the two hubs lead to a higher *** the same network size and distance,the best coherence occurs in the tree with the largest difference in the hub’s ***,we establish a correlation between network coherence and average path length and find that they behave linearly.

关键词： Consensus Coherence Distance Average path length

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配网应急一体化看图指挥系统设计应用

农村电气化 2024年第3期 60-65页

作者：陈根奇黄振华王少春孙伟刚李爽余剑国网浙江省电力有限公司绍兴供电公司浙江绍兴312000

针对配网调控中心面临事故增多及停电时户数管控要求不断提高的趋势,利用现有的调控云平台,采用人工智能、计算机等技术汇集配电自动化设备、主网调度自动化系统的数据资源设计配网应急一体化看图指挥系统,实现故障抢修、舆情管控的高... 详细信息

针对配网调控中心面临事故增多及停电时户数管控要求不断提高的趋势,利用现有的调控云平台,采用人工智能、计算机等技术汇集配电自动化设备、主网调度自动化系统的数据资源设计配网应急一体化看图指挥系统,实现故障抢修、舆情管控的高效联动。配网应急一体化看图指挥系统具备故障研判、图形化展示、短信推送等功能,系统在某地区配网调控中心实际投运,能够辅助配网调控人员高效处置配电网事故。

关键词：配网看图指挥调控云可视化故障处置

Lunar Exploration and Development Vision

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Aerospace China 2020年第1期21卷 26-32页

作者： sun weigang WANG Zhaoqi ZHAO Qi China Aerospace Science and Technology Corporation Beijing 100048 Space Star Technology Co. LtdBeijing 100086 Beijing Institute of Spacecraft Environment Engineering Beijing 100094

By summarizing the history,human achievements in lunar exploration,the vision and prospect of the con-strucion of a lunar base for the further development in lunar exploration is *** idea of building a"beehive"lunar vllage is proposed,and the promotion of future lunar exploration along with the impact on the development of science,technology and the economy is analyzed in this paper。

关键词： lunar exploration lunar development beehive lunar vlage technology development

Newly discovered Palaeolithic artefacts from loess deposits and their ages in Lantian,central China

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Chinese Science Bulletin 2014年第7期59卷 651-661页

作者： Shejiang Wang Huayu Lu Hongyan Zhang Xuefeng sun Shuangwen Yi Yingyong Chen Gaike Zhang Luda Xing weigang sun Key Laboratory of Vertebrate Evolution and Human Origins of Chinese Academy of Sciences Institute of Vertebrate Palaeontology and Palaeoanthropology The Chinese Academy of Sciences School of Geographic and Oceanographic Sciences Institute for Climate and Global Change Research Nanjing University Guizhou Provincial Institute of Cultural Relics and Archaeology University of Chinese Academy of Sciences Shaanxi Provincial Institute of Archaeology

Eight new Palaeolithic open-air sites were identified and 770 stone artefacts were collected from 2009 to 2011 in the Lantian area of the Bahe River valley, central China. Because the famous Homo erectus fossils were unearthed at the Gongwangling and Chenjiawo localities, and more than 30 Palaeolithic open-air sites were investigated in the 1960s in this region, the catchment of Bahe River is regarded as one of the most important hominin sites from the late early Pleistocene to the middle Pleistocene. These eight newly discovered open-air sites are located at the second(n = 6), third(n = 1) or higher terraces(n = 1) of the Bahe River. The Diaozhai section on the second terrace was sampled in detail. Two samples were collected for optically stimulated luminescence dating(OSL). The OSL results suggest that a buried lithic artefact layer at the Diaozhai site spans approximately 70–30 ka. The lithic assemblage analysis suggests that the stone artefacts were made of local pebbles/cobbles such as greywacke, quartz, sandstone and igneous rocks. The main percussion techniques that were used were direct hard hammer percussion and bi-polar techniques. The lithic artefacts comprise hammer stones, cores, flakes, retouched tools and flaking debris. Acheulian-type large cutting tools(LCTs) such as hand-axes, picks and cleavers were indentified in the Lantian region as well. This is the first time Acheulian-type LCTs from the late Pleistocene have been identified in this region. This study distinguishes age gaps between Western world and East Asian Acheulian-type tools.

关键词：旧石器时代蓝田地区黄土沉积年龄文物中国古人类遗址晚更新世

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沥青混凝土结构表征与参数构建

哈尔滨工业大学学报 2020年第3期52卷 38-43页

作者：孙勇纪伦孙维刚刘海权李俊谭忆秋哈尔滨工业大学交通科学与工程学院黑龙江省八达路桥建设有限公司吉林省交通规划设计院中建丝路建设投资有限公司

为研究沥青混凝土的结构,丰富表征沥青混凝土结构的参数,首先对常见的体积参数进行总结,分析沥青混凝土组成成分和结构特点.然后,从不同角度出发构建新的体积参数,并对参数进行分类和分析.最后,在AC-16级配范围内通过改变细集料的比重... 详细信息

为研究沥青混凝土的结构,丰富表征沥青混凝土结构的参数,首先对常见的体积参数进行总结,分析沥青混凝土组成成分和结构特点.然后,从不同角度出发构建新的体积参数,并对参数进行分类和分析.最后,在AC-16级配范围内通过改变细集料的比重得到了5个不同级配,同时设置4.2%、4.7%、5.2%（沥青占混合料的质量比）3种不同沥青用量,研究沥青用量对参数的影响,根据现行沥青混合料试验规程要求制作标准马歇尔试件,并进行体积指标的测定,通过计算得到构建的参数,并分析参数随级配及沥青用量的变化规律.结果表明:体积参数随着沥青混合料的级配、沥青用量的改变有着明显的变化.其中,沥青类参数VA、VM、d;与混合料中的沥青用量有明显的线性关系,同时VM还与V;有关;空隙类参数VMA、V;、VV随V;的增加先减小后增大.只改变沥青用量时,VMA、V;、VV隨沥青用量的增加而减小;集料类参数G、V;、V;、V;、F;、F;、F;、V;与混合料中粗细集料以及矿粉的比例有关.

关键词：沥青混凝土结构表征参数构建级配性能

锻造次数对7A04铝合金组织和力学性能影响

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热加工工艺 2008年第1期37卷 31-33页

作者：孙卫刚张治民王强中北大学材料科学与工程学院山西太原030051

采用拉伸试验、冲击试验、硬度检测、金相分析等方法测试和分析了7A04铝合金在不同的锻造次数下的强度、硬度、冲击功和金相组织。结果表明:随着锻造次数的增加,由于晶粒不断细化,强度和硬度逐渐升高,当锻造次数为四次时,晶粒发生了完... 详细信息

采用拉伸试验、冲击试验、硬度检测、金相分析等方法测试和分析了7A04铝合金在不同的锻造次数下的强度、硬度、冲击功和金相组织。结果表明:随着锻造次数的增加,由于晶粒不断细化,强度和硬度逐渐升高,当锻造次数为四次时,晶粒发生了完全动态再结晶,强度和硬度达到最大,继续增加锻造次数强度降低;因为组织中微裂纹的存在,随着晶粒的细化塑性反而减小;冲击功随着锻造次数的增加而减小,三次时达到最小,之后又增大。确定一次和四次为7A04铝合金合适的锻造次数,为该类铝合金零件的锻造工艺的制定提供理论基础。

关键词： 7A04 铝合金锻造次数组织和力学性能

发电厂中央空调通风系统的污染源及其治理技术

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通信电源技术 2023年第6期40卷 205-207页

作者：孙伟钢浙江浙能嘉华发电有限公司浙江嘉兴314201

电力在我国快速的智能化发展进程中,起到了先行军的作用,其中火电厂又成为了先行军中的后勤特备队。在长期的可燃物转换成电能的同时,产生的蒸汽和粉尘的附着,极易造成发电厂中央空调通风系统的污染。嘉兴火力发电厂集中控制室位于锅炉... 详细信息

电力在我国快速的智能化发展进程中,起到了先行军的作用,其中火电厂又成为了先行军中的后勤特备队。在长期的可燃物转换成电能的同时,产生的蒸汽和粉尘的附着,极易造成发电厂中央空调通风系统的污染。嘉兴火力发电厂集中控制室位于锅炉岛区域,环境欠佳,导致中央空调新风质量不高。从设计规程、系统设计、设备选型、运行维护等方面分析了通风系统污染的原因后,将新风口改自汽机房屋顶,并在控制室末端加装多联机调节,定期对整个通风管进行清洗消毒,很大程度上解决了排风系统的污染问题,有效改善了发电厂控制室内部各房间的空气质量。

关键词：集控室中央空调空气质量污染问题改进建议