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Second-order consensus in networks of dynamic agents with communication time-delays

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Journal of Systems Engineering and Electronics 2010年第1期21卷 88-94页

作者： Bo Yang1,2, Huajing Fang3. and Hua Wang4.1. School of Navigation, wuhan University of Technology, wuhan 4.0}063. P. R. China 2. wuhan Second Ship Design and Research Institute, wuhan 4.0}064. P. R. China 3. Department of Control Science and Engineering, Huazhong University of Science and Technology, wuhan 4.0074. P. R. China 4. Department of Aerospace and Mechanical Engineering, Boston University, Boston MA02215, USA School of Navigation Wuhan University of Technology Wuhan 430063 P. R. China wuhan Second Ship Design and Research Institute Wuhan 430064 P. R. China Department of Control Science and Engineering Huazhong University of Science and Technology Wuhan 430074 P. R. China Department of Aerospace and Mechanical Engineering Boston University Boston MA02215 USA

This paper proposes second-order consensus protocols with time-delays and gives the measure of the robustness of the protocols to the time-delay existing in the network of agents with second-order dynamics. By employing a frequency domain method, it is proven that the information states and their time derivatives of all the agents in the network achieve consensus asymptotically, respectively, for appropriate communication timedelay if the topology of weighted network is connected. Particularly, a tight upper bound on the communication time-delay that can be tolerated in the dynamic network is found. The consensus protocols are distributed in the sense that each agent only needs information from its neighboring agents, which reduces the complexity of connections between neighboring agents significantly. Numerical simulation results are provided to demonstrate the effectiveness and the sharpness of the theoretical results for second-order consensus in networks in the presence of communication time-delays.

关键词： second-order consensus protocols dynamic networks algebraic graph theory frequency domain analysis com-munication constraints.

山东省财政厅山东省自然资源厅国家税务总局山东省税务局关于印发《山东省矿业权出让收益征收实施办法》的通知(鲁财综〔2024.13.)

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山东省人民政府公报 2024年第9期 31-38页

作者： 1.山东省财政厅 2.山东省自然资源厅 3.国家税务总局山东省税务局山东省财政厅山东省自然资源厅国家税务总局山东省税务局

SDPR-2024.013.001各市财政局、自然资源主管部门,国家税务总局山东省各市税务局:经省政府同意,现将《山东省矿业权出让收益征收实施办法》印发给你们,请抓好贯彻落实。2024.3.12日山东省矿业权出让收益征收实施办法第一章总则第一条... 详细信息

SDPR-2024.013.001各市财政局、自然资源主管部门,国家税务总局山东省各市税务局:经省政府同意,现将《山东省矿业权出让收益征收实施办法》印发给你们,请抓好贯彻落实。2024.3.12日山东省矿业权出让收益征收实施办法第一章总则第一条为健全矿产资源有偿使用制度,规范矿业权出让收益征收管理,维护矿产资源国家所有者权益.

关键词：国家税务总局山东省财政厅实施办法资源主管部门矿业权出让自然资源征收管理

Carbon isotope composition of the Lower Triassic marine carbonates, Lower Yangtze Region, South China

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Science China Earth Sciences 2006年第3期49卷 225-241页

作者： ZUO Jingxun1,2, TONG Jinnan3. QIU Haiou4.& ZHAO Laishi3.1. Nanjing Institute of Geology and Palaeontology, Chinese Academy of Sciences, Nanjing 210008, China 2. Henan Institute of Geological Survey, Zhengzhou 4.0007, China 3. State Key Laboratory of Geological Processes and Mineral Resources at China University of Geosciences, wuhan {4. China 4. Faculty of Material Sciences and Chemical Engineering, China University of Geosciences, wuhan {4. China Nanjing Institute of Geology and Palaeontology Chinese Academy of Sciences Nanjing China Henan Institute of Geological Survey Zhengzhou China State Key Laboratory of Geological Processes and Mineral Resources at China University of Geosciences Wuhan China Faculty of Material Sciences and Chemical Engineering China University of Geosciences Wuhan China

Studies on three Lower Triassic sections located on the shallow water platform, the deep water slope and in the deep water basin in the Lower Yangtze Region, South China, show the similar trend of carbon isotope evolution. Biostratigraphic correlations among the Lower Triassic sections on the basis of standard conodont zones indicate that three negative shifts occurred in the Griesbachian, the Smithian and the late Spathian stages respectively, and one distinctly positive shift occurred in the early Spathian stage. Trend of carbon isotope evolution of the Lower Triassic reflects some significant changes in the global carbon cycle. Moreover, δ 13. background values are intensively controlled by palaeogeographic environment. In general, δ 13. values from deep-water slope carbonates are lighter than those from carbonate platform and heavier than those from deep-water basin carbonates. The positive carbon isotope excursion may be induced by a significant amount of organic carbon burial in marine sediments and increase in primary productivity. The large negative carbon isotope excursions during the Early Triassic in Lower Yangtze Region are interpreted to relate to volcano eruptions based on tuffaceous claystone interlayers observed near the Permian-Triassic boundary, the Induan- Olenekian boundary and the Lower Triassic-Middle Triassic boundary.

关键词： Lower Triassic, carbon isotope compositions, palaeogeography, volcanic eruptions, Lower Yangtze Region.

广东省农业农村厅广东省财政厅广东省商务厅关于印发《广东省推动农业机械报废更新工作方案》的通知(粤农农规[2024.2号)

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广东省人民政府公报 2024年第9期 7-11页

作者： 1.广东省农业农村厅 2.广东省财政厅 3.广东省商务厅广东省农业农村厅广东省财政厅广东省商务厅

各地级以上市人民政府:为贯彻落实《国务院关于印发的通知》(国发[2024.7号)要求,根据《广东省推动大规模设备更新和消费品以旧换新行动方案》,结合农业机械报废更新工作实际,进一步加快推动我省农业机械报废更新工作,省农业农村厅会同... 详细信息

各地级以上市人民政府:为贯彻落实《国务院关于印发的通知》(国发[2024.7号)要求,根据《广东省推动大规模设备更新和消费品以旧换新行动方案》,结合农业机械报废更新工作实际,进一步加快推动我省农业机械报废更新工作,省农业农村厅会同省财政厅、省商务厅研究制定了《广东省推动农业机械报废更新工作方案》。经省人民政府同意,现印发给你们,请遵照执行。

关键词：以旧换新设备更新农业机械报废更新行动方案消费品广东省财政厅通知

A Feedback-Based Web Search Engine

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wuhan University Journal of Natural Sciences 2004年第5期9卷 561-568页

作者： ZHANG Wei-feng 1,2,3., XU Bao-wen 2,3.4., ZHOU Xiao-yu 2,3.4.1. Department of Computer Science and Engineering, Nanjing University of Posts and Telecommunications, Nanjing 210003. Jiangsu, China 2. Department of Computer Science and Engineering, Southeast University, Nanjing 210096, Jiangsu, China 3. Jiangsu Institute of Software Quality, Nanjing 210096 Jiangsu, China 4. The State Key Laboratory of Software Engineering, wuhan University, wuhan 4.0}072, Hubei, China Department of Computer Science and Engineering Nanjing University of Posts and Telecommunications Nanjing Jiangsu China Department of Computer Science and Engineering Southeast University Najing Jiangsu China Jiangsu Institute of Software Quality Nanjing Jiangsu China The State Key Laboratory of Software Engineering Wuhan University Wuhan Hubei China

Web search engines are very useful information service tools in the Internet. The current web search engines produce search results relating to the search terms and the actual information collected by them. Since the selections of the search results cannot affect the future ones, they may not cover most people’s interests. In this paper, feedback information produced by the user’s accessing lists will be represented by the rough set and can reconstruct the query string and influence the search results. And thus the search engines can provide self-adaptability. Key words WWW - search engine - query reconstruction - feedback CLC number TP 3.1. 13..4.Foundation item: Supported by the National Natural Science Fundation of China (603.3.66). National Grand Fundamental Research 973.Program of China (2002CB3.200). Opening Foundation of State Key Laboratory of Software Engineering in wuhan University, Opening Foundation of Jiangsu Key Laboratory of Computer Information Processing Technology in Soochow UniversityBiography: ZHANG Wei-feng (1975-), male, Ph.D. research direction: artificial intelligence, search engine, data mining, network language.

关键词： WWW search engine query reconstruction feedback

中国乘用车电动化对动力电池关键金属材料的需求研究

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汽车工程学报 2024年

作者：谢航张庭婷谢晓敏张书瑞 1.上海交通大学智慧能源创新学院 2.上海交通大学碳中和发展研究院 3.上海交通大学机械与动力工程学院 4.上海交通大学中英国际低碳学院上海交通大学智慧能源创新学院上海交通大学碳中和发展研究院上海交通大学机械与动力工程学院上海交通大学中英国际低碳学院

新能源汽车作为交通运输领域节能减排的重要技术手段，近年来的迅速发展导致对锂、钴、镍、锰等电池材料的需求剧增。为评估相关资源的供应风险，基于Gompertz曲线模型和物质流分析的方法，对两种电池技术发展情景下中国2023.2050年新... 详细信息

新能源汽车作为交通运输领域节能减排的重要技术手段，近年来的迅速发展导致对锂、钴、镍、锰等电池材料的需求剧增。为评估相关资源的供应风险，基于Gompertz曲线模型和物质流分析的方法，对两种电池技术发展情景下中国2023.2050年新能源乘用车电池材料的需求进行了预测。结果显示：在磷酸铁锂电池路线（LFPR）下2050年锂、钴、镍、锰的需求将分别达到了23.千吨、169千吨、3.2千吨、158千吨；在三元锂电池路线（NMCR）下2050年锂、钴、镍、锰的需求将分别达到了24.千吨、201千吨、1084.吨、187千吨。当前中国锂、钴、镍的产能将难以满足未来新能源汽车发展的需要。2050年的回收锂、回收钴和回收镍将能分别至少满足86.5%、93.5%和65.8%的新增需求。鉴于国内目前还缺乏有关废电池回收的全面法律法规，制定相关标准势在必行。

关键词：新能源汽车动力电池关键金属回收潜力

HCWCI/Carbon Steel Bimetal Liner by Liquid-Liquid Compound Lost Foam Casting

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Journal of Iron and Steel Research International 2012年第10期19卷 13-19页

作者： XIAO Xiao-feng1,2, YE Sheng-ping2, YIN Wei-xin3. XUE Qiong4.(1. School of Mechanical Engineering and Automation, wuhan Textile University, wuhan 4.0}073. Hubei, China 2. State Key Laboratory of Material Processing and Die and Mould Technology, Huazhong University of Science and Technology, wuhan {3. Hubei, China 3. wuhan Zhike Abrasive-Resistant Material Science and Technology Development Co Ltd, wuhan 4.0}073. Hubei, China 4. College of Science, wuhan University of Technology, wuhan 4.0}079, Hubei, China) School of Mechanical Engineering and Automation Wuhan Textile University Wuhan Hubei China State Key Laboratory of Material Processing and Die and Mould Technology Huazhong University of Science and Technology Wuhan Hubei China wuhan Zhike Abrasive-Resistant Material Science and Technology Development Co Ltd Wuhan Hubei China College of Science Wuhan University of Technology Wuhan Hubei China

Impact, friction and corrosion from the grinding balls and the grinding medium during the mineral processing result in liner breakage. Liner, made from Hadfield steel or alloyed steel, could not have served in wet grinding environment for more than ten months. Composite liner, made from HCWCI (high Cr white cast iron) and carbon steel, has been developed successfully with liquid-liquid composing process based on LFC (lost foam casting). The microstructure of composite was analyzed with optical microscope, SEM (scanning electron microscope)/EDX energy-dispersive X-ray and XRD (X-ray diffraction). According to micrograph, the combination region of two metals was staggered like dogtooth, no mixtures occurred between two liquid metals, and its interface presented excellent metallurgical bonding state. The results of mechanical property test show that, the hardness of HRC, the fracture toughness, and the bending strength are more than 61, 16.5 J/cm2 and 1 600 MPa, respectively. Comparison between liners made from bimetal composite and alloyed steel has also been investigated in industrial hematite ball mill. The results of eight months test in wet grinding environment prove that the service life of bimetal composite liner is three times as long as that of one made from alloyed steel.

关键词： composite liner bimetal liquid-liquid compound composite interface lost foam casting high Cr white cast iron

法治保障共建共享创新引领打造控烟社会共治的“上海方案”

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健康中国观察 2024年第5期 48-50页

作者： 1.上海市健康促进委员会办公室 2.上海市健康促进中心 3.上海市控制吸烟协会上海市健康促进委员会办公室上海市健康促进中心上海市控制吸烟协会

2010年3.1日,《上海市公共场所控制吸烟条例》(简称《条例》)生效实施,是世界卫生组织《烟草控制框架公约》在我国生效后,大陆地区首部省级人大颁布的控烟地方法规。全市依托法治保障,形成控烟“六个一”特色管理模式,打造共建、共治... 详细信息

2010年3.1日,《上海市公共场所控制吸烟条例》(简称《条例》)生效实施,是世界卫生组织《烟草控制框架公约》在我国生效后,大陆地区首部省级人大颁布的控烟地方法规。全市依托法治保障,形成控烟“六个一”特色管理模式,打造共建、共治、共享的社会治理格局。成人吸烟率连年下降至19.4.,提前达到“健康中国203.”目标,控烟成效领跑全国,上海市人民政府获世界卫生组织“世界无烟日奖”,为创新城市治理提供了“上海方案”。

关键词：法治保障《烟草控制框架公约》上海市人民政府世界无烟日控烟社会治理格局世界卫生组织共建共享

安徽省农业农村厅安徽省生态环境厅安徽省市场监督管理局关于进一步加强牛羊禽屠宰行业管理的指导意见(皖农医[2023.168号)

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安徽省人民政府公报 2024年第2期 21-24页

作者： 1.安徽省农业农村厅 2.安徽省生态环境厅 3.安徽省市场监督管理局安徽省农业农村厅安徽省生态环境厅安徽省市场监督管理局

各市、县(市、区)农业农村局、生态环境局、市场监管局:为促进“秸秆变肉”暨肉牛振兴计划实施,推动牛羊禽屠宰行业高质量发展,依据《中华人民共和国畜牧法》《中华人民共和国动物防疫法》《中华人民共和国环境保护法》《中华人民共和... 详细信息

各市、县(市、区)农业农村局、生态环境局、市场监管局:为促进“秸秆变肉”暨肉牛振兴计划实施,推动牛羊禽屠宰行业高质量发展,依据《中华人民共和国畜牧法》《中华人民共和国动物防疫法》《中华人民共和国环境保护法》《中华人民共和国食品安全法》等有关法律法规,现就进一步加强牛羊禽屠宰行业管理提出以下指导意见。

关键词：《中华人民共和国食品安全法》畜牧法生态环境振兴计划安徽省牛羊法律法规禽