检索结果-内蒙古大学图书馆

Seismic and geological evidence of hidden faults in the Yinpan Reservoir area based on a dense seismic array

Science China Earth Sciences 2024年第7期67卷 2401-2407页

作者： Guangyao YIN Huai ZHANG Liwen GONG Q ipeng BAI Yicun GUO Bing ZHANG Yaolin SHI Key Laboratoryof Earth System Numerical Modeling and Application(Chinese Academyof Sciences) College of Earth and Planetary SciencesUniversity of Chinese Academy of SciencesBeijing 100049China Key Laboratory of Computational Geodynamics Chinese Academy of SciencesBeijing 100049China Southern Marine Science and Engineering Guangdong Laboratory(Zhuhai) Zhuhai 519080China Beijing Yanshan Critical Zone National Field Scientific Observation and Research Station Beijing 101408China Chongqing Earthquake Agency Chongqing 401147 China Institute of Earthquake Forecasting China Earthquake AdministrationBeijing 100036China Hangzhou Applied Acoustics Research Institute Hangzhou 311100China State Key Laboratory of Geodesy and Earths Dynamics Innovation Academy for Precision Measurement Science and TechnologyCASWuhan 430077China

*** November 23,2017,an M_(S)5.0 earthquake occurred in Wulong,Chongqing,China,resulting in tens of casualties and considerable economic ***,the epicenter of this earthquake was located in the transition zone from the... 详细信息

关键词： earthquake southeast seismic

来源：评论

学校读者我要写书评

暂无评论

THE DEVELOPMENT OF FISSION PRODUCT DIFFUSION/RELEASE MODEL FOR FAILED TRISO PARTICLES 30

THE DEVELOPMENT OF FISSION PRODUCT DIFFUSION/RELEASE MODEL F...

引用

30th International Conference on Nuclear Engineering, ICONE 2023

作者： Zheng, Junqiang He, Yanan Wu, Junmei Wu, Yingwei Li, Yuanming Tian, Wenxi Su, Guanghui Qiu, Suizheng School of Nuclear Science and Technology Xi'an Jiaotong University Xi'an China State Key Laboratory for Strength and Vibration of Mechanical Structures School of Aerospace Xi'an Jiaotong University Xi'an China Science and Technology on Reactor System Design Technology Laboratory Nuclear Power Institution of China Chengdu China

ISBN: (纸本)9784888982566

TRISO coated fuel particle has been adopted in the design of various reactors and Accident Tolerant Fuel (ATF) due to its excellent accident tolerant performance under high temperatures and other severe conditions. Accurately estimating fission product release from TRISO-coated fuel particles is indispensable to calculate the mechanistic source term. In most models, a bare kernel is substituted conservatively for failed particle. Thus, a theoretical method was proposed to describe the transport of fission products in intact and failed fuel particles. In this paper, to analyze the diffusion and release characteristics of intact TRISO-coated fuel particles' fission products, the fission products diffusion model of TRISO-coated fuel particles with thermal-mechanical coupling was established based on the COMSOL Multiphysics software and verified by the IAEA CRP-6 benchmark. The results indicate that the predictions by the developed fission product transport model is reasonable. Moreover, to analyze fission product release for failed partials, a conceptual theoretical method was proposed. The adsorption and desorption constraint model for fission products at the gas-solid interface and the gas phase diffusion model were added to the original model to analyze. Subsequently, predictions comparison for fission products' fractional release in failed particles between the proposed method and the Settings adopted in BISON were completed. The result suggests that the gas-phase diffusion model is feasible and seems favorable to simulate the diffusion of fission products in the failed coating layers. © 2023 by JSME.

关键词： Fission products

来源：评论

学校读者我要写书评

暂无评论

Force and Stiffness of an Electromagnetic Spring Constituted by Magnet Inside Coaxial Cylinder Coil 8th

Force and Stiffness of an Electromagnetic Spring Constituted...

引用

8th Asia International Symposium on Mechatronics, AISM 2021

作者： Yu, Jue Gu, Yeqing Zhao, Yong Nanjing Research Institute of Electronics Technology Nanjing210039 China State Key Laboratory of Mechanical System and Vibration Shanghai200240 China

ISBN: (纸本)9789811913082

This paper presents an electromagnetic spring consisting of thick cylinder coil and coaxial ring permanent magnet (PM). According to the method of equivalent magnetic charge, the analytical models of magnetic force and stiffness between cylinder coil and permanent magnet are built. The models are expressed in the form of triple integrals. A physical experiment dedicating to measure the magnetic force between cylinder coil and coaxial PM is carried out to verify the accuracy of the presented theoretical model. In order to improve the work ability and stiffness property of the electromagnetic spring, the geometric optimization of the coil and PM is implemented. Ultimately, the mechanical structure of the electromagnetic spring is designed. The current-controlled spring stiffness makes it possible to use the spring to adapt dynamic load. The nearly constant output stiffness under a determined input current further makes the control and measurement of spring force be convenient. © 2022, Science Press.

关键词： Stiffness

来源：评论

学校读者我要写书评

暂无评论

Study on the amplitude distribution of W-band tree clutter based on measured data∗ 6

Study on the amplitude distribution of W-band tree clutter b...

引用

6th International Conference on Electronic Information technology and Computer Engineering, EITCE 2022

作者： Liu, Tianhao Tang, Chuanbin Yuan, Naichang State Key Laboratory of Complex Electromagnetic Environment Effects on Electronics and Information System National University of Defense Technology Hunan Changsha China

ISBN: (纸本)9781450397148

This paper investigates the amplitude statistical characteristics of the measured tree clutter data of the W-band HH-polarized vehicle-mounted radar system, estimates the parameters of five amplitude statistical models including the K-distribution using the method of moments and the maximum likelihood estimation method, obtains the clutter amplitude fitting curves of various theoretical distributions. Then, the root mean square error of the fitted data and the Chi-Squared test value are obtained from the measured tree clutter data of the W-band radar, and the fitting effect of various statistical models is evaluated. The lognormal and K-distributions were concluded to be good fits for the amplitude distributions of the tree clutter data in the two cases measured in this paper, respectively, and the effects of experimental conditions such as W-band tree clutter signal-to-noise ratio and thermal noise on the K-distribution model parameters were further analyzed. This paper provides some reference for W-band tree clutter amplitude modeling. © 2022 Association for Computing Machinery.

关键词： Method of moments

来源：评论

学校读者我要写书评

暂无评论

IoT terminal architecture model 2

IoT terminal architecture model

引用

2023 2nd International Conference on Smart Energy and Energy Internet of Things, SEEIoT 2023

作者： Zhao, Xianping Mao, Yuxing Liu, Siyang Zhou, Lidan Li, Jian Wang, Hongyu Yunnan Power Grid Co. Ltd China State Key Laboratory of Power Transmission Equipment & System Security and New Technology Chongqing University China Shanghai Jiao Tong University China Wiscom System Co. LTD China

The physical Information mapping relationship and function in the sense and control domain is described using entities such as gateway, sense, and control device in the existing IoT reference architecture. However, due to the lack of research on the IoT terminal architecture, there have been difficulties in the research and application of IoT terminal technologies. Starting from the trend analysis of application development of IoT systems, this article proposes an IoT terminal architecture reference model IoT TARM that integrates gateway and sense and control device functions. It analyses the architecture and functional characteristic enhancement acting on the IoT systems due to the IoT TARM. It summarizes the low-power, reconfigurable, lightweight, and platform characteristics of IoT TARM and expounds on the relationship between IoT TARM and the existing IoT architecture. © 2023 Institute of Physics Publishing. All rights reserved.

关键词： Internet of things

来源：评论

学校读者我要写书评

暂无评论

Low Fluorescence Background Fiber-Enhanced Raman Spectroscopy for Simultaneous and Dynamic Detection of Sub-ppm Levels SF6 Decomposition Products 28

Low Fluorescence Background Fiber-Enhanced Raman Spectroscop...

引用

28th International Conference on Optical Fiber Sensors, OFS 2023

作者： Kong, Weiping Wan, Fu Liu, Qiang Wang, Qian Long, Yingkai Chen, Weigen State Key Laboratory of Power Transmission Equipment & System Security and New Technology Chongqing University Chongqing400044 China State Grid Electric Power Research Institute Chongqing Electric Power Company Chongqing401123 China

Detecting SF6 decomposition products can be used to analyze the defect types of SF6 gas-insulated electrical power equipment. In this paper, we propose a low fluorescence background fiber-enhanced Raman spectroscopy f... 详细信息

ISBN: (纸本)9781957171302

关键词： Sulfur hexafluoride

来源：评论

学校读者我要写书评

暂无评论

A novel adaptive heuristic dynamic programming-based algorithm for aircraft confrontation games

引用

Fundamental Research 2021年第6期1卷 792-799页

作者： Yi Mao Zhijie Chen Yi Yang Yuxin Hu State Key Laboratory of Air Traffic Management System and Technology Nanjing 210007China

Intelligent confrontation has become a vital technology for future air *** games between a penetrating aircraft and an intercepting aircraft are essential for modern air *** addition,the perfor-mance indexes of both the interceptor and penetrator must be *** methods only solve one side’s guidance problem without considering the intelligence of the *** this paper,an adaptive heuristic dynamic programming-based algorithm is proposed for aircraft confrontation *** algorithm constructs a heuristic dynamic programming model for both confrontation aircraft and then updates the critical and ac-tion network parameters using the dynamic confrontation state *** simulations indicate that the proposed algorithm can optimize the guidance law for both the interceptor and penetrator and is therefore superior to traditional proportional navigation methods.

关键词： Aircraft confrontation Optimal control Neural network Adaptive heuristic dynamic programming Flight simulation

来源：评论

学校读者我要写书评

暂无评论

Time-sequential color code division multiplexing holographic display with metasurface

引用

Opto-Electronic Advances 2023年第8期6卷 8-16页

作者： Xin Li Qinmiao Chen Xue Zhang Ruizhe Zhao Shumin Xiao Yongtian Wang Lingling Huang Beijing Engineering Research Center of Mixed Reality and Advanced Display School of Optics and PhotonicsBeijing Institute of TechnologyBeijing 100081China MoE Key Laboratory of Photoelectronic Imaging Technology and System and MIIT Key Laboratory of Photonics Information TechnologySchool of Optics and PhotonicsBeijing Institute of TechnologyBeijing 100081China State Key Laboratory on Tunable Laser Technology Ministry of Industry and Information Technology Key Lab of Micro-Nano Optoelectronic Information SystemHarbin Institute of Technology(Shenzhen)Shenzhen 518055China National Key Laboratory of Science and Technology on Advanced Composites in Special Environments Harbin Institute of TechnologyHarbin 150080China Collaborative Innovation Center of Extreme Optics Shanxi UniversityTaiyuan 030006China

Color metasurface holograms are powerful and versatile platforms for modulating the amplitude,phase,polarization,and other properties of light at multiple operating ***,the current color metasurface holography can only realize static *** this study,we propose and demonstrate a multiplexing metasurface technique combined with multiwavelength code-division multiplexing(CDM)to realize dynamic *** code references are utilized to record information within a single metasurface and increase the information capacity and security for anticracks.A total of 48 monochrome images consisting of pure color characters and multilevel color video frames were reconstructed in dual polarization channels of the birefringent metasurface to exhibit high information density,and a video was displayed via sequential illumination of the corresponding code patterns to verify the ability of dynamic *** approach demonstrates significant application potential in optical data storage,optical encryption,multiwavelengthversatile diffractive optical elements,and stimulated emission depletion microscopy.

关键词： metasurface color holography dynamic display code division multiplexing

来源：评论

学校读者我要写书评

暂无评论

Cooperative jamming resource allocation model based on the improved firefly algorithm 6

Cooperative jamming resource allocation model based on the i...

引用

6th International Conference on Electronic Information technology and Computer Engineering, EITCE 2022

作者： Yao, Zekun Liu, Tianhao Wang, Chao State Key Laboratory of Complex Electromagnetic Environment Effects on Electronics and Information System National University of Defense Technology Hunan Changsha China

ISBN: (纸本)9781450397148

In this paper, the jamming resource allocation technology of netted radar is studied. A complete jamming resource allocation model including jamming beam, jamming power and other influencing factors is established. Then the objective function of radar detection probability is constructed, and the improved firefly algorithm is used to optimize the jamming resource allocation model and random keys are used in this paper to improve the coding mode of firefly algorithm. At the end of the paper, results show that in the condition of limited jamming resources, the model and algorithm in this paper can achieve a better effectiveness of resource allocation and provide a new idea for future research. © 2022 Association for Computing Machinery.

关键词： Resource allocation

来源：评论

学校读者我要写书评

暂无评论

Defects inducing anomalous exciton kinetics in monolayer WS_(2)

引用

Nano Research 2022年第2期15卷 1616-1622页

作者： Zhe Li Yan Zeng Zhenwei Ou Tianzhu Zhang Rongguang Du Ke Wu Quanbing Guo Wei Jiang Yuhao Xu Tao Li Tai Min Ti Wang Hongxing Xu School of Physics and Technology Center for Nanoscience and Nanotechnologyand Key Laboratory of Artificial Micro-and Nanostructures of Ministry of EducationWuhan UniversityWuhan 430072China Institute of Microscale Optoelectronics Shenzhen UniversityShenzhen 518060China Center for Spintronics and Quantum System State Key Laboratory for Mechanical Behavior of MaterialsSchool of Materials Science and EngineeringXian Jiaotong UniversityXian 710049China

Two-dimensional(2D)transition metal dichalcogenide(TMD)has emerged as an effective optoelectronics material due to its novel optical *** the role of defects in exciton kinetics is crucial for achieving high-efficiency TMD ***,we observe defects induced anomalous power dependence exciton dynamics and spatial distribution in hexagonal heterogeneous WS_(2).With transient absorption microscopy study,we illustrate that these phenomena originate from the competition between radiative and defect-related non-radiative *** understand the physics behind this,a decay model is introduced with two defect-related channels,which demonstrates that more excitons decay through non-radiative channels in the dark region than the bright *** work reveals the mechanisms of anomalous exciton kinetics by defects and is instrumental for understanding and exploiting excitonic states in emerging 2D semiconductors.

关键词： transition metal dichalcogenides defect exciton dynamics transient absorption microscopy

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：