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Gate-controlled magnetic transitions in Fe_(3)GeTe_(2)with lithium ion conducting glass substrate

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Chinese Physics B 2021年第9期30卷 72-76页

作者： guangyi chen Yu Zhang Shaomian Qi Jian-Hao chen International Center of Quantum Material School of PhysicsPeking UniversityBeijing 100871China Beijing Academy of Quantum Information Sciences Beijing 100193China Key Laboratory for the Physics and Chemistry of Nanodevices Peking UniversityBeijing 100871China Interdisciplinary Institute of Light-Element Quantum Materials and Research Center for Light-Element Advanced Materials Peking UniversityBeijing 100871China

Since the discovery of magnetism in two dimensions,effective manipulation of magnetism in van der Waals magnets has always been a crucial *** gating is a promising method for such manipulation,yet devices gated with conventional ionic liquid may have some restrictions in applications due to the liquid nature of the gate ***-ion conducting glass-ceramics(LICGC),a solid Li^(+)electrolyte,could be used as a substrate while simultaneously acts as a promising substitute for ionic *** we demonstrate that the ferromagnetism of Fe_(3)GeTe_(2)2(FGT)could be modulated via *** applying a voltage between FGT and the back side of LICGC substrate,Li^(+)doping occurs and causes the decrease of the coercive field(Hc)and ferromagnetic transition temperature(Tc)in FGT nanoflakes.A modulation efficiency for H_(c)of up to~24.6%under V_(g)=3.5 V at T=100 K is *** results provide another method to construct electrically-controlled magnetoelectronics,with potential applications in future information technology.

关键词： two-dimensional magnetism two-dimensional material ionic gating

Seismic performances of dyke on liquefiable soils

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Journal of Rock Mechanics and Geotechnical Engineering 2013年第4期5卷 294-305页

作者： Mingwu Wang guangyi chen Susumu Iai School of Civil and Hydraulic Engineering Hefei University of Technology Disaster Prevention Research Institute Kyoto University

Various field investigations of earthquake disaster cases have confirmed that earthquake-induced liquefaction is a main factor causing significant damage to dyke,research on seismic performances of dyke is thus of great *** this paper,seismic responses of dyke on liquefiable soils were investigated by means of dynamic centrifuge model tests and three-dimensional（3D） effective stress analysis method which is based on a multiple shear mechanism model and a liquefaction *** the prototype scale centrifuge tests,sine wave input motions with peak accelerations 0.806 m/s2,1.790 m/s2 and 3.133 m/s2 of varied amplitudes were adopted to study the seismic performances of dyke on the saturated soil layer foundation with relative density of approximately 30%.Then,corresponding numerical simulations were conducted to investigate the distribution and variations of deformation,acceleration,excess pore-water pressure（EPWP）,and behaviors of shear dilatancy in the dyke and the liquefiable soil ***,detailed discussions and comparisons between numerical simulations and centrifuge tests were also *** is concluded that the computed results have a good agreement with the measured results by centrifuge *** physical and numerical models both indicate that the dyke hosted on liquefiable soils subjected to earthquake motions has exhibited larger settlement and lateral spread：the stronger the motion is,the larger the dyke deformation *** to soils in the deep ground under the dyke and the free field,the EPWP ratio is much smaller in the shallow liquefiable soil beneath the dyke in spite of large deformation *** the same overburden depth soil from free site and the liquefiable foundation beneath dyke,the characteristics of effective stress path and stress-strain relations are *** these results may be of theoretical and practical significance for seismic design of the dyke on liquefiable soils.

关键词： Dyke Dynamic centrifuge test Effective stress analysis Liquefaction Seismic design Seismic responses

Joint Beamforming Design for Dual-Functional Radar-Communication Systems Under Beampattern Gain Constraints

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ZTE Communications 2024年第3期22卷 13-20页

作者： chen guangyi ZHANG Ruoyu REN Hong LIN Xu WU Wen Key Laboratory of Near-Range RF Sensing ICs Microsystems Min-istry of EducationSchool of Electronic and Optical EngineeringNanjing University of Science and TechnologyNanjing 210094China School of Electronics and Information Engineering Harbin Institute of TechnologyHarbin 150001China

The joint beamforming design challenge for dual-functional radar-communication systems is addressed in this *** base station in these systems is tasked with simultaneously sending shared signals for both multi-user communication and target *** primary objective is to maximize the sum rate of multi-user communication,while also ensuring sufficient beampattern gain at particular angles that are of interest for sensing,all within the constraints of the transmit power *** tackle this complex non-convex problem,an effective algorithm that iteratively optimizes the joint beamformers is *** algorithm leverages the techniques of fractional programming and semidefinite relaxation to achieve its *** numerical results confirm the effectiveness of the proposed algorithm.

关键词： dual-functional radar-communication joint beamforming design beampattern gain constraints semidefinite relaxation fractional programming

STRIVE FOR A CONTINUOUS,SOUND AND RAPID DEVELOPMENT OF THE CAUSE OF CIVIL AVIATION

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中国民用航空 1995年第5期 4-11页

作者： chen guangyi Minister,CAAC

*** of the Work Performedin 1994Last year,CAAC and its af-filiates carried out in earnest theguiding principles,the overall situ-ation interest and focal points ofthe work determined by the Cen-tral Committee of the Party at thebeginning of the year,implement-ed a whole series of important in-structions and general require-ments of the leading comrades of

关键词： STRIVE FOR A CONTINUOUS,SOUND AND RAPID DEVELOPMENT OF THE CAUSE OF CIVIL AVIATION 民航民用航空航空 must work CAAC

新加坡2030年陆路交通发展规划简析与启示

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城市交通 2016年第2期14卷 67-74,82页

作者：陈广艺上海建瓴工程咨询有限公司上海200032

交通安全、交通污染、交通拥堵等问题已成为制约中国城市创新发展和转型发展的瓶颈。为进一步探索中国城市突破交通困境、治理雾霾顽症、创新转型发展之路,深入解析新加坡2030年陆路交通总体规划的先进理念和内容特色。阐述了新加坡"集... 详细信息

交通安全、交通污染、交通拥堵等问题已成为制约中国城市创新发展和转型发展的瓶颈。为进一步探索中国城市突破交通困境、治理雾霾顽症、创新转型发展之路,深入解析新加坡2030年陆路交通总体规划的先进理念和内容特色。阐述了新加坡"集约用地+改善体验"及"公交主导+多管齐下"的陆路交通规划思想和政策。在此基础上,探求新加坡2030年陆路交通发展规划对中国城市交通规划在转变观念、优化方法、完善机制等方面的有益启示。重点对如何提升集约交通品质、加强服务民生的人性化规划、健全智能化和信息化交通规划体系提出建议。

关键词：交通规划新加坡陆路交通以人为本出行体验公共交通步行和自行车

美国城市建设项目交通影响评价编制指南及启示

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规划师 2011年第2期27卷 121-125页

作者：陈广艺上海建瓴工程咨询有限公司

交通影响评价在我国城市规划和建设管理中发挥着愈来愈重要的作用,已成为城市建设项目审批中一项重要的审查内容。美国是交通影响评价的发源地,由美国交通工程师协会(ITE)制定的交通影响评价技术指南代表了该领域发展的前沿水平。通过... 详细信息

交通影响评价在我国城市规划和建设管理中发挥着愈来愈重要的作用,已成为城市建设项目审批中一项重要的审查内容。美国是交通影响评价的发源地,由美国交通工程师协会(ITE)制定的交通影响评价技术指南代表了该领域发展的前沿水平。通过对美国城市建设项目交通影响评价工作的技术指南、工作体系、编制特点进行学习和分析,反思我国现阶段交通影响评价的工作存在的问题,要从规范专业术语、转变评价理念、构建基础调研机制等方面进行改善。

关键词：交通影响评价建设项目技术指南美国

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可追溯农产品供应链系统建模研究

农机化研究 2010年第10期32卷 16-21页

作者：彭剑陈光仪湖南农业大学信息科学技术学院长沙410128

讨论了建立可追溯农产品供应链系统的必要性及其作用,以及农产品可追溯编码、可追溯过程、农产品元数据标准体系;对农产品批次行为进行了UML建模;分析了农产品可追溯信息的请求和响应问题;提出了农产品可追溯供应链系统中需重点解决的... 详细信息

讨论了建立可追溯农产品供应链系统的必要性及其作用,以及农产品可追溯编码、可追溯过程、农产品元数据标准体系;对农产品批次行为进行了UML建模;分析了农产品可追溯信息的请求和响应问题;提出了农产品可追溯供应链系统中需重点解决的一些问题。

关键词：农产品可追溯性编码元数据批次 UML

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基于熵权的土地整理方案集对分析模型

农业工程学报 2010年第6期26卷 322-325页

作者：汪明武陈光怡金菊良合肥工业大学土木与水利工程学院合肥230009

土地整理方案的优选是一个复杂的不确定性问题。为克服基于专家经验或偏好的传统土地整理方案优选方法的缺陷,该文应用集对分析理论和信息熵理论,探讨了可挖掘评价指标固有信息的土地整理方案集对分析综合评价模型,即基于待选土地整理... 详细信息

土地整理方案的优选是一个复杂的不确定性问题。为克服基于专家经验或偏好的传统土地整理方案优选方法的缺陷,该文应用集对分析理论和信息熵理论,探讨了可挖掘评价指标固有信息的土地整理方案集对分析综合评价模型,即基于待选土地整理方案与理想方案的集对同一度计算贴近度,结合反映指标内在重要程度的信息熵权,综合评价待选土地整理方案。实例应用及对比结果表明,该模型应用于土地整理方案是可行的,且取得较好效果,提高了土地整理方案优选的可靠性和科学性。

关键词：优化熵土地利用集对分析土地整理

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大数据对提升智库咨政水平的作用及发展建议

智库理论与实践 2018年第1期3卷 71-77,92页

作者：陈光义新华社瞭望智库北京100077

[目的/意义]数字经济时代,大数据将推动智库研究分析与决策咨询方式的深刻变革,应用大数据提高智库咨政水平对提升智库科学决策支撑能力、建设中国特色新型智库、增强国家软实力具有重要意义。[方法/过程]本文从理论层面,对智库的发展... 详细信息

[目的/意义]数字经济时代,大数据将推动智库研究分析与决策咨询方式的深刻变革,应用大数据提高智库咨政水平对提升智库科学决策支撑能力、建设中国特色新型智库、增强国家软实力具有重要意义。[方法/过程]本文从理论层面,对智库的发展历程、主要类型和咨政方式、存在的问题进行系统的梳理,针对存在的问题分析了大数据对智库咨政的重要作用,并结合我国大数据智库发展现状提出具体发展建议。[结果/结论]目前我国智库在政策咨询的选题、研究过程、解决问题能力、政策评估、信息共享等方面存在问题,大数据能针对这些问题提供"新手段、新基础、新工具、新方法、新途径",并从提升大数据重视程度、建设专业数据库、建立大数据分析平台、培养大数据人才、建立智库大数据联盟、加强与大数据公司合作等方面提出建议。

关键词：智库大数据咨政中国特色新型智库数字中国