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Comparative research on integrated development of large river basins:a case study of the Yangtze and the Rhone

Journal of Geographical Sciences 2006年第3期16卷 378-382页

作者： LIU Hui Jean-Paul Bravard cai zongxia Thierry Sanjuan Institute of Geographic Sciences and Natural Resources Research CAS Beijing 100101 China Lyon 2 University U.M.R. 5600 France Paris 1 University U.M.R. 8561 Paris F-75005 France

Since 2001, the French and Chinese researchers have done a cooperative research on the comparison of integrated development of large fiver basins. The Yangtze River was chosen as a crux of this research and linked with other older river experiments like the Rhone, the Nile and the Mississippi. This research includes not only the environmental issues but also economic and social issues. One special issue journal has been published in French for our research results. Other two collective and comparative books in French and Chinese will be finished at the end of this year. In the future, the comparison should be widened to Italy （the Po）, Egypt （the Nile development planning） and the United States （the Mississippi Basin） and we would like to enlarge our research group and want to link up different teams and research projects, in order to get a global understanding of large fiver regions phenomenon.

关键词： large river basin integrated development Yangtze River Rhone

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Observation of magnetic droplets in magnetic tunnel junctions

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Science China(Physics,Mechanics & Astronomy) 2022年第2期65卷 99-105页

作者： Kewen Shi Wenlong cai Sheng Jiang Daoqian Zhu Kaihua Cao zongxia Guo Jiaqi Wei Ao Du Zhi Li Yan Huang Jialiang Yin Johan Akerman Weisheng Zhao Fert Beijing Institute M1IT Key Laboratory of SpintronicsSchool of Integrated Circuit Science and EngineeringBeihang UniversityBeijing 100191China Beihang-Goertek Joint Microelectronics Institute Qingdao Research InstituteBeihang UniversityQingdao 266000China Department of Physics University of GothenburgGothenburg 41296Sweden Department of Applied Physics School of Engineering Sciences.KTH Royal Institute of TechnologyKista 16440Sweden School of Microelectronics Northwestern Poly technical UniversityXi'an 710072China

Magnetic droplets,a class of highly nonlinear magnetodynamic solitons,can be nucleated and stabilized in nanocontact spintorque *** we experimentally demonstrate magnetic droplets in magnetic tunnel junctions(MTJs).The droplet nucleation is accompanied by power enhancement compared with its ferromagnetic resonance *** nucleation and stabilization of droplets are ascribed to the double-Co Fe B free-layer structure in the all-perpendicular MTJ,which provides a low Zhang-Li torque and a high pinning *** results enable better electrical sensitivity in fundamental studies of droplets and show that the droplets can be utilized in MTJ-based applications and materials science.

关键词： spin-torque nano-oscillators magnetic droplets spin dynamics magnetic tunnel junctions

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Review of fluid and control technology of hydraulic wind turbines

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Frontiers of Mechanical Engineering 2017年第3期12卷 312-320页

作者： Maolin cai Yixuan WANG zongxia JIAO Yan SHI School of Automation Science and Electrical Engineering BeihangUniversity Beijing 100191 China

This study examines the development of the fluid and control technology of hydraulic wind turbines. The current state of hydraulic wind turbines as a new technology is described, and its basic fluid model and typical control method are expounded by comparing various study results. Finally, the advantages of hydraulic wind turbines are enumerated. Hydraulic wind turbines are expected to become the main development direction of wind turbines.

关键词： wind turbine hydraulic system fluid model,control technology

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Antiferromagnetic spintronics: An overview and outlook

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Fundamental Research 2022年第4期2卷 522-534页

作者： Danrong Xionga Yuhao Jiang Kewen Shi Ao Du Yuxuan Yao zongxia Guo Daoqian Zhu Kaihua Cao Shouzhong Peng Wenlong cai Dapeng Zhu Weisheng Zhao Fert Bejing Institute MIT Key Laboratory of SpintronicsSchool of Integated Circuit Science and EngineeringBeihang UniversityBejing 10191China Beihang-Goertek Joint Microelectronics Institute Qingdao Research InstituteBeihang UniversityQingdao 266ooChina

Over the pas few decades,the diversified development of antiferomagnetic spintronics has made antiferomagnets(AFMs)interesting and very *** tough challenges,the applications of AFMs in electronic devices have transitioned from focusing on the interface coupling features to achieving the manipulation and detection of *** AFMs are internally magnetic,taking full use of AFMs for information storage has been the main target of *** this paper,we provide a comprehensive description of AFM spintronics applications from the interface coupling,read-out operations,and writing manipulations *** examine the early use of AFMs in magnetic recordings and conventional magnetoresistive random-access memory(MRAM),and review the latest mechanisms of the manipulation and detection of ***,based on exchange bias(EB)manipulation,a high-performance EB-MRAM is introduced as the next generation of AFM-based memories,which provides an effective method for read-out and writing of AFMs and opens a new era for AFM spintronics.

关键词： Antiferromagnets MRAM Spintronics Spin-orbit torque Exchange bias

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基于深度学习的遥感变化检测技术应用研究

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北京测绘 2023年第2期37卷 248-253页

作者：徐宗霞蔡彩李泽宇陶迎春贾光军张海涛北京市测绘设计研究院北京100045 城市空间信息工程北京市重点实验室北京100045

传统的人工目视变化提取的方式耗费大量的人力、物力且作业周期长,已经无法满足当今快速监测分析的需求,现在利用不同期影像进行智能变化检测和提取成为专家学者和软件方研究的热点。本文将浅析基于深度学习的遥感影像变化检测方法,旨... 详细信息

传统的人工目视变化提取的方式耗费大量的人力、物力且作业周期长,已经无法满足当今快速监测分析的需求,现在利用不同期影像进行智能变化检测和提取成为专家学者和软件方研究的热点。本文将浅析基于深度学习的遥感影像变化检测方法,旨在探索基于遥感影像进行常态化、快速化变化检测的技术路线和相关业务的应用,如基础测绘地形图更新、土地变更调查、地理国情监测更新等,为城市变化信息、地理信息数据的快速更新提供支撑。

关键词：遥感影像深度学习变化检测地形图更新

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