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A New （t, n） Threshold Signature Scheme Withstanding the Conspiracy Attack

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A New （t, n） Threshold Signature Scheme Withstanding the C...

Antisymmetric planar Hall effect in rutile oxide films induced by the Lorentz force

The 1st Chinese Conference on Trusted Computing and information Security

作者： xie qi, yu xiu-yuan department of mathematics,zhejiang university. hangzhou 310027. zhejiang,china: school of information and engineering, hangzhou teachers college. hangzhou ,3.0012. zhejiang, china hangzhou teachers college. hangzhou 3.0012. zhejiang, china

＜正＞ A conspiracy attack is proposed to show that Wang-Li’s scheme is insecure, because any t or more group members can impersonate other t members to sign any message without holding the responsibility. To avoid t... 详细信息

关键词： cryptography threshold signature conspiracy attack identifier tracing

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Science Bulletin 2024年第15期69卷 2362-2369页

作者： Yongwei Cui Zhaoqing Li Haoran Chen yunzhuo Wu yue Chen Ke Pei Tong Wu Nian xie Renchao Che Xuepeng qiu Yi Liu Zhe yuan Yizheng Wu department of Physics State Key Laboratory of Surface PhysicsFudan UniversityShanghai 200433China Institute for Nanoelectronic Devices and Quantum Computing Fudan UniversityShanghai 200433China Interdisciplinary Center for Theoretical Physics and information Sciences Fudan UniversityShanghai 200433China Center for Advanced Quantum Studies and department of Physics Beijing Normal UniversityBeijing 100875China Laboratory of Advanced Materials Shanghai Key Lab of Molecular Catalysis and Innovative MaterialsAcademy for Engineering&TechnologyFudan UniversityShanghai 200438China Shanghai Key Laboratory of Special Artificial Microstructure Materials and Technology School of Physics Science and EngineeringTongji UniversityShanghai 200092China zhejiang Laboratory Hangzhou 311100China Shanghai Research Center for Quantum Sciences Shanghai 201315China Shanghai Key Laboratory of Metasurfaces for Light Manipulation Fudan UniversityShanghai 200433China

The conventional Hall effect is linearly proportional to the field component or magnetization component perpendicular to a film. Despite the increasing theoretical proposals on the Hall effect to the in-plane field or magnetization in various special systems induced by the Berry curvature, such an unconventional Hall effect has only been experimentally reported in Weyl semimetals and in a heterodimensional superlattice. Here, we report an unambiguous experimental observation of the antisymmetric planar Hall effect(APHE) with respect to the in-plane magnetic field in centrosymmetric rutile RuO_(2) and IrO_(2) single-crystal films. The measured Hall resistivity is found to be linearly proportional to the component of the applied in-plane magnetic field along a particular crystal axis and to be independent of the current direction or temperature. Both the experimental observations and theoretical calculations confirm that the APHE in rutile oxide films is induced by the Lorentz force. Our findings can be generalized to ferromagnetic materials for the discovery of anomalous Hall effects and quantum anomalous Hall effects induced by in-plane magnetization. In addition to significantly expanding knowledge of the Hall effect, this work opens the door to explore new members in the Hall effect family.

关键词： Antisymmetric planar Hall effect Lorentz force Rutile oxide films Crystal symmetry

Electrically controllable laser frequency combs in graphene-fibre microresonators

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Light(Science & Applications) 2020年第1期9卷 220-228页

作者： Chenye qin Kunpeng Jia qianyuan Li Teng Tan Xiaohan Wang Yanhong Guo Shu-Wei Huang yuan Liu Shining Zhu Zhenda xie yunjiang Rao Baicheng Yao Key Laboratory of Optical Fibre Sensing and Communications(Education Ministry of china) University of Electronic Science and Technology of ChinaChengduChina National Laboratory of Solid State Microstructures and School of Electronic Science and EngineeringSchool of Physics and College of Engineering and Applied SciencesNanjing UniversityNanjingChina department of Electrical Computerand Energy EngineeringUniversity of Colorado BoulderBoulderCO 80309USA Key Laboratory for Micro-Nano Optoelectronic Devices(Education Ministry of china) School of Physics and ElectronicsHunan UniversityChangshaChina Research Centre for Optical Fibre Sensing Zhejiang LaboratoryHangzhouChina

Laser frequency combs emitting ultrafast pulses of light,at equidistantly discrete frequencies,are cornerstones of modern information *** recent years,the generation of soliton combs in microcavities with ultrahighquality factors has established microcombs as out-oflaboratory ***,the material and geometry of a laser cavity,which determine comb formation,are difficult to electrically *** dynamic control can further enrich the diversity of comb outputs and help to actively stabilize them.

关键词： laser frequency fibre

星载高光谱分辨率激光雷达大气气溶胶和云探测研究

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光学学报 2023年第18期43卷 1-10页

作者：胡建波王雄赵少华王中挺杨巨鑫戴光耀谢缘竹孝鹏刘东侯霞刘继桥陈卫标中国科学院上海光学精密机械研究所航天激光工程部上海201800 中国科学院大学材料与光电研究中心北京100049 华中科技大学光学与电子信息学院湖北武汉430074 生态环境部卫星环境应用中心北京100094 中国科学院上海光学精密机械研究所空间激光信息传输与探测技术重点实验室上海201800 中国海洋大学信息科学与工程学部海洋技术学院山东青岛266100 浙江大学光电科学与工程学院浙江杭州310027 崂山实验室山东青岛266237

为实现对全球气溶胶光学参数剖面的高精度测量,采用基于碘分子滤波器的高光谱分辨率探测技术。结合欧洲中期天气预报中心(ECMWF)的大气再分析数据集(ERA5)的温度和压强数据,选取在轨期间途经撒哈拉沙漠和加拿大山火区域的星载高光谱分... 详细信息

为实现对全球气溶胶光学参数剖面的高精度测量,采用基于碘分子滤波器的高光谱分辨率探测技术。结合欧洲中期天气预报中心(ECMWF)的大气再分析数据集(ERA5)的温度和压强数据,选取在轨期间途经撒哈拉沙漠和加拿大山火区域的星载高光谱分辨率激光雷达(HSRL)的观测数据,对沙尘类气溶胶和烟尘类气溶胶的光学特性进行分析,包括气溶胶的后向散射系数、消光系数、退偏振比和雷达比。结果表明:撒哈拉沙漠地区近地面5km以内的气溶胶分布主要以沙尘类气溶胶为主,其退偏振比集中在0.2~0.4,雷达比数值集中在40~60sr;加拿大山火地区的气溶胶主要以烟尘类气溶胶为主,其退偏振比集中在0.02~0.15,雷达比在50~70sr范围。激光雷达特有的高光谱探测技术,在气溶胶和云的精细化探测和分类方面具有重要应用,将在环境监测中发挥重要作用。

关键词：大气气溶胶云气溶胶光学参数星载激光雷达高光谱分辨率探测技术

Mapping essential urban land use categories in china(EULUC-china):preliminary results for 2018

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Science Bulletin 2020年第3期65卷 182-187页

作者： Peng Gong Bin Chen Xuecao Li Han Liu Jie Wang yuqi Bai Jingming Chen Xi Chen Lei Fang Shuailong Feng Yongjiu Feng Yali Gong Hao Gu Huabing Huang Xiaochun Huang Hongzan Jiao Yingdong Kang Guangbin Lei Ainong Li Xiaoting Li Xun Li yuechen Li Zhilin Li Zhongde Li Chong Liu Chunxia Liu Maochou Liu Shuguang Liu Wanliu Mao Changhong Miao Hao Ni qisheng Pan Shuhua qi Zhehao Ren Zhuoran Shan Shaoqing Shen Minjun Shi Yimeng Song Mo Su Hoi Ping Suen Bo Sun Fangdi Sun Jian Sun Lin Sun Wenyao Sun Tian Tian Xiaohua Tong Yihsing Tseng Ying Tu Hong Wang Lan Wang Xi Wan Zongming Wang Tinghai Wu Yaowen xie Jian Yang Jun Yang Man yuan Wenze yue Hongda Zeng Kuo Zhang Neng Zhang Tao Zhang yu Zhang Feng Zhao Yichen Zheng qiming Zhou Nicholas Clinton Zhiliang Zhu Bing Xu Ministry of Education Key Laboratory for Earth System Modeling Department of Earth System ScienceTsinghua UniversityBeijing 100084China Tsinghua Urban Institute Tsinghua UniversityBeijing 100084China Center for Healthy Cities Institute for China Sustainable UrbanizationTsinghua UniversityBeijing 100084China department of Land Air and Water ResourcesUniversity of CaliforniaDavisCA 95616-8627USA department of Geological and Atmospheric Sciences Iowa State UniversityAmesIA 50011USA State Key Laboratory of Remote Sensing Science Institute of Remote Sensing and Digital EarthChinese Academy of SciencesBeijing 100101China AI for Earth Laboratory Cross-Strait InstituteTsinghua UniversityBeijing 100084China International Institute for Earth System Sciences Nanjing UniversityNanjing 210093China Research Center for Ecology and Environment of Central Asia Chinese Academy of SciencesUrumchi 830011China Key Laboratory of Forest Ecology and Management Institute of Applied EcologyChinese Academy of SciencesShenyang 110016China National engineering Laboratory for Applied Technology in Forestry&Ecology in South china College of Life Science and TechnologyCentral South University of Forestry and TechnologyChangsha 410004China college.of Surveying&Geo-Informatics Tongji UniversityShanghai 200092China department of Urban Planning College of Architecture and Urban PlanningTongji UniversityShanghai 200092China Beijing Institute of Urban Planning Beijing 100045China department of Urban Planning School of Urban DesignWuhan UniversityWuhan 430072China college.of Earth Sciences Jilin UniversityChangchun 130061China Research Center for Digital Mountain and Remote Sensing Application Institute of Mountain Hazards and EnvironmentChinese Academy of SciencesChengdu 610041China Institute of Remote Sensing and Geographic information System School of Earth and Space SciencesPeking UniversityBeijing 100871China department of Urban and Regional Planning School of Geography and PlanningSun Yat-sen Univ

Land use reflects human activities on *** land use is the highest level human alteration on Earth,and it is rapidly changing due to population increase and *** areas have widespread effects on local hydrology,climate,biodiversity,and food production[1,2].However,maps,that contain knowledge on the distribution,pattern and composition of various land use types in urban areas,are limited to city *** mapping standard on data sources,methods,land use classification schemes varies from city to city,due to differences in financial input and skills of mapping *** address various national and global environmental challenges caused by urbanization,it is important to have urban land uses at the national and global scales that are derived from the same or consistent data sources with the same or compatible classification systems and mapping *** is because,only with urban land use maps produced with similar criteria,consistent environmental policies can be made,and action efforts can be compared and assessed for large scale environmental ***,despite of the fact that a number of urban-extent maps exist at global scales[3,4],more detailed urban land use maps do not exist at the same *** at big country or regional levels such as for the United States,china and European Union,consistent land use mapping efforts are rare[5,6](e.g.,https://***/open_land_use/).

关键词： EULUC-china 土地利用类型

把握机会窗口期减缓气候变化对中国居民健康影响

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科学通报 2023年第15期68卷 1899-1905页

作者：蔡闻佳张弛张诗卉艾思奇白玉琪鲍俊哲常楠陈彬陈慧琪程亮亮崔学勤戴瀚程 Bawuerjiang Danna 底骞董伟董文轩窦德景范维澄范星房小怡高仝高源耿阳关大博郭亚菲 Ian Hamilton 胡艺馨华峻翊黄存瑞黄弘黄建斌蒋俏蕾姜晓朋柯丕煜 Gregor Kiesewetter Pete Lampard 李传玺李瑞奇李双利梁璐林波荣林华亮刘欢刘起勇刘小波刘心远刘昱甫刘钊刘竹楼书含鲁晨曦罗勇罗震宇马伟 Alice McGushin 牛彦麟任超阮增良 Wolfgang Schöpp 单钰理苏婧孙韬淳王灿王琼文三妹谢杨熊辉徐冰徐朦颜钰杨军杨廉平杨秀俞乐岳玉娟曾仪娉张镜张少辉张曜张仲宸赵继尧赵亮赵梦真赵琦赵哲周景博朱征宏陈冯富珍宫鹏清华大学地球系统科学系北京100084 北京理工大学管理与经济学院北京100081 中山大学公共卫生学院广州510080 郑州大学公共卫生学院郑州450001 南京医科大学公共卫生学院南京211166 北京师范大学环境学院北京100875 北京大学环境工程学院北京100871 清华大学新闻与传播学院北京100084 清华大学万科公共卫生学院北京100084 浙江大学地球科学学院杭州310058 清华大学公共安全研究所北京100084 清华大学工程物理系北京100084 百度研究院北京100091 山东师范大学环境与生态研究院济南250013 中国气象科学研究院气象影响与风险研究中心北京100086 山东师范大学商学院济南250013 中国疾病预防控制中心传染病预防控制所传染病预防控制国家重点实验室北京102206 清华大学建筑学院北京100084 中国疾病预防控制中心环境与人群健康重点实验室环境与健康相关产品安全所北京102206 Energy Institute University College LondonLondon WC1E 6BTUK 南方科技大学统计与数据科学系深圳518055 香港大学建筑学院中国香港999077 世界卫生组织驻华代表处北京100600 Pollution Management Research Group EnergyClimateand Environment ProgramInternational Institute for Applied Systems Analysis(IIASA)Schlossplatz 1-A-2361 LaxenburgAustria department of Health Sciences University of YorkYork YO105DDCanada 山东大学齐鲁医学院公共卫生学院流行病学系济南250002 中国科学技术大学计算机科学与技术学院合肥230027 department of Geography and the Environment University of North TexasDenton TX 76203-5017USA 清华大学环境学院北京100084 Geography College of Life and Environmental SciencesUniversity of ExeterExeter EX12LUUK 山东大学气候变化与健康研究中心济南250002 Institute for Global Health University College LondonLondon WC1H 0ALUK school of Geography Earth and Environmental SciencesUniversity of BirminghamBirmingham B152TTUK 清华大学人文学院北京100084 北京航空航天大学经济与管理学院北京100083 香港科技大学(广州)信息枢纽人工智能学域广州511443 暨南大学环境与气候研究所广州510632 清华大学气候变化与可持续发展研究院北京100084 清华大学苏世民学院北京100084 清华大学体育学部北京100084 中国科学院大气物理研究所大气科学和地球流体力学数值模拟国家重点实验室北京100029 香港大学地球科学系和地理系中国香港999077

随着中国总人口的不断增加以及改革开放以来经济的飞速发展,中国面临来自气候变化的健康威胁也在不断上升.与此同时,中国也处于一个独特的机遇窗口期,如果能够有效应对气候变化带来的健康风险,将造福今后几代人的健康.反之,如果没有及... 详细信息

随着中国总人口的不断增加以及改革开放以来经济的飞速发展,中国面临来自气候变化的健康威胁也在不断上升.与此同时,中国也处于一个独特的机遇窗口期,如果能够有效应对气候变化带来的健康风险,将造福今后几代人的健康.反之,如果没有及时、充分的应对措施,气候变化对中国居民健康和生命的威胁将与日俱增.为了推动更及时且有利于改善人群健康的气候应对行动,由清华大学牵头建立的柳叶刀倒计时亚洲中心在全球柳叶刀倒计时工作的基础上[1,2],从2020年开始,聚焦气候变化对中国人群健康的影响进行全面且系统的评估[3,4].

关键词：减缓气候变化人群健康柳叶刀居民健康窗口期倒计时应对措施把握机会