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A survey on impulse-radio UWB localization

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Science china(Information Sciences) 2010年第7期53卷 1322-1335页

作者： XIAO Zhu1,2, HEI YongQiang1, YU Quan1,3 & YI KeChu1 1State Key Laboratory of Integrated Service Networks, Xidian University, Xi’an 710071, china 2College of Computer and Communication, Hunan University, Changsha 410082, china 3research institute of general staff headquarters, beijing 1.0039, china State Key Laboratory of Integrated Service Networks Xidian University College of Computer and Communication Hunan University research institute of general staff headquarters

Impulse radio ultra-wideband (IR-UWB) technique has good performance in the application of high-precision localization since it possesses unique properties such as large instantaneous bandwidth and high time resolution. Making IR-UWB localization technology a growing hot topic in recent research field, therefore, it is necessary for us to give an overview of it in this paper. The TOA estimation, error analysis, NLOS identification and NLOS localization are studied in details based on the ranging methods. Simultaneously the UWB localization applications and practical problems are pointed out. At last, we outline the challenges for further research of IR-UWB localization.

关键词： impulse radio ultra-wideband localization TOA estimation error model NLOS identification NLOS localization

Effect of Microstructure and Sulfide on Corrosion of Cu-Ni Alloys in Seawater

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Journal of Materials Science & Technology 2000年第4期16卷 411-415页

作者： Xiaolong ZHU (general research institute for Nonferrous Metals, beijing 100088, china) general research institute for Nonferrous Metals Beijing 100088 China

The microstructure and the corrosion product films have been investigated on Cu-Ni alloys by TEM, SEM, AES and electrochemical technique as well as natural seawater exposure tests. Experimental results showed that the alloys had two kinds of microstructure, i.e. recrystallizatjon and incomplete recrystallization. In synthetic seawater containing 2x10^-6 S^2-, the stability of the alloy increased with the increase of deformation and annealing temperature, i.e., the degree of recrystallization. After exposure to natural seawater for different periods of time, the corrosion product films of the recrystallized alloy were rich in Ni and compact, and there were cracks in the outer layer which contained a small amount of S; the films of the alloy of incomplete recrystallization became thick, loose and porous, and obviously of layered structure, and the intergranular corrosion took place in the underlying substrate Besides, a great amount of seawater substance existed in the outer layer and some sulfur was found within the grain boundaries that prefer to corrode. The accelerating effect of sulfides in corrosion of Cu-Ni alloys in seawater is attributed to the coexistence and absorption of sulfides and carbides promoting the preference of corrosion where they absorb, and the formation of dissolvable Cu2S results in keeping the surface of the alloys in the active state.

关键词： Effect of Microstructure and Sulfide on Corrosion of Cu-Ni Alloys in Seawater Cu Ni

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New development of biliary surgery in china

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World Journal of Gastroenterology 2000年第2期6卷 187-192页

作者： Zhi Qiang Huang The research institute of general Surgery,The general Hospital of PLA,beijing 100853,china 解放军总医院北京

CHARACTERISTICS OF BILIARY CALCULOUSDISEASES IN china:THE CHANGING SCOPEDiseases of the biliary tract in china is complicatedwith the prevalence of primary infection of the bileduct *** the middle of the 20th century,biliary infection,biliary parasitic infestation,andbiliary stones made up the three chief componentsof biliary diseases in *** to the

关键词： biliary surgery cholelithiasis intrahepatic stones carcinoma gallbladder carcinoma bile duct

中国政治经济学年度发展报告（2023）（下）

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政治经济学评论 2024年第3期 90+207-208页

作者： Center for Studies of Contemporary Political Economy,research institute for 21st-Century Marxism,Nankai University·University of Chinese Academy of Social Science Center for Teaching and research on Capital,Renmin University of china National institute of Socialist Political Economy with Chinese Characteristics,Renmin University of china 南开大学·中国社会科学院大学21世纪马克思主义研究院当代政治经济学研究中心中国人民大学《资本论》教学与研究中心中国人民大学全国中国特色社会主义政治经济学研究中心

编者按2023年，高质量发展扎实推进，新质生产力加快形成，我国经济总体回升向好，圆满实现发展主要预期目标。为针对性地破解经济恢复发展中的难题，聚焦推进中国式现代化进程中的重点、难点问题，中国政治经济学界开展系统深入研究，...

编者按2023年，高质量发展扎实推进，新质生产力加快形成，我国经济总体回升向好，圆满实现发展主要预期目标。为针对性地破解经济恢复发展中的难题，聚焦推进中国式现代化进程中的重点、难点问题，中国政治经济学界开展系统深入研究，取得系列代表性成果。为准确刻画学界研究进展和轨迹，推动中国经济学理论体系的构建和完善，本刊精选议题如期奉上《中国政治经济学年度发展报告（2023）》。自2010年起，本刊连续十四年发布《中国政治经济学年度发展报告》，“年度发展报告”专栏已成为本刊标志性特色栏目。2023年报告聚焦12个专题，分为（上）（下）两篇，其中专题1—6于报告（上）篇刊登，专题7—12由报告（下）篇刊登。2023年报告（下）选题如下：

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An Overview of Mineral Processing in china

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Rare Metals 2001年第2期20卷 69-73页

作者： Quanyuan Chen, Jingshen Zhang, Dianzuo Whng (Changsha research institute of Mining and Metallurgy, Changsha 410012, china general research institute for Nonferrous Metals, beijing 100088, china) 长沙矿冶研究院湖南长沙 410012 北京有色冶金研究总院北京 410012

The latest progress in mineral processing in china is described. It is also pointed out that the existing technology can not meet the needs of economic development. The combined challenges of poor resources, economical benefits and environmental pollution issues require further research to upgrade the separation efficiency economically. The methods of mineral processing should play a more important part in waste treatment such as wastewater treatment, the remediation of contaminated soil and the recycling of wastes. Biomineral technology will be utilised in the near future.

关键词： mineral processing biomineral technology comminution ore waste treatment

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广东深圳长圳公共租赁住房新型建造技术集成项目

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建筑实践 2024年第03期 104-111页

作者： china Construction Science Technology Group Co., Ltd. Shenzhen general institute of Architectural Design and research Co., Ltd. 中建科技集团有限公司深圳市建筑设计研究总院有限公司

长圳公共住房及其附属工程项目（以下简称长圳项目）位于深圳市光明区,是深圳市规模最大的装配式公共住房项目和深圳市建设管理模式改革创新的试点项目。项目总投资58亿元,地上建筑24栋,总建筑面积约115万m2,其中:住宅建筑面积81万m2,...

长圳公共住房及其附属工程项目（以下简称长圳项目）位于深圳市光明区,是深圳市规模最大的装配式公共住房项目和深圳市建设管理模式改革创新的试点项目。项目总投资58亿元,地上建筑24栋,总建筑面积约115万m2,其中:住宅建筑面积81万m2,商业建筑6.5万m2,公共配套设施3.2万m2,多层建筑高度10—24m,高层建筑高度100—150m,提供近万套人才安居住房。

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Microstructure evolution of Al-Zn-Mg-Cu-Zr alloy during hot deformation

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Rare Metals 2010年第4期29卷 426-432页

作者： YAN Liangming,SHEN Jian,LI Zhoubing,LI Junpeng,and YAN Xiaodong general research institute for Nonferrous Metals,beijing 100088,china general research institute for Nonferrous Metals Beijing China

Compression tests of the Al-Zn-Mg-Cu-Zr（7055） alloy were performed at various strains and temperatures from 300 to 450℃ under a con- stant strain rate between 10^-2 s^-1and 1 s^-1. Microstructures during hot deformation were studied by transmission electron microscopy （TEM）. Dislocation density, dislocation cells and subgrains of the deformed samples were investigated in detail and compared to make a better understanding of the microstructure evolution. The results showed that stress-strain curves under the experimental conditions belonged to the type of dynamic recovery. When the alloy deformed at various strains and 300℃, the microstructure underwent a process of disordered dislocations to cell structure, subgrain structure and subgrain coarsening. With the temperature increasing, subgrains grew and dislocation density in the interior decreased at a strain rate of 1 s^-1. At the temperature of 350℃, the average diameter of subgrains decreased, sub-boundaries broadened and dislocation density in the interior decreased when the strain rate was increased. The deformed samples of 7055 alloy had smaller subgrains than that of 7005 alloy at the same compression condition because of high alloy content.

关键词： aluminum alloy microstructure evolution dynamic recovery subgrain

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THE INTRODUCTION TO general research institute FOR NON-FERROUS METALS

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有色金属工程 1987年第2期 76-82页

作者： MA FUKANG (President of general research institute for Non-ferrous Metals, beijing, china)

Ⅰ. general DESCRIPTION The institute was founded in November, 1952 and called Comprehensive institute for Non-ferrous Metals, then, in January, 1958 it was renamed the research institute for Non-ferrous Metals and later in November, 1983, it got the present name, the general research institute for Non-ferrous Metals (GRINM), which is the largest research institute in the field of nonferrous metals industry in china at present, and attached to the china National Non-ferrous Metals Industry Corporation (CNNC).

关键词： THE INTRODUCTION TO general research institute FOR NON-FERROUS METALS 北京有色金属研究总院 Pro World over

北京城市副中心0701街区D#地块住房百年住宅示范项目

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建筑实践 2024年第03期 96-103页

作者： china institute of Building Standard Design & research Co., Ltd. 中国建筑标准设计研究院有限公司

北京城市副中心是规划建设疏解北京非首都功能、推动京津冀协同发展的历史性工程。项目对于落实首都城市战略定位、建设国际—流的和谐宜居之都,对于建设以首都为核心的世界级城市群,都具有十分重大而深远的意义。项目规划设计打破传统...

北京城市副中心是规划建设疏解北京非首都功能、推动京津冀协同发展的历史性工程。项目对于落实首都城市战略定位、建设国际—流的和谐宜居之都,对于建设以首都为核心的世界级城市群,都具有十分重大而深远的意义。项目规划设计打破传统封闭社区规划模式,以小街区密路网、开放式社区的设计骨架,用半围合式住宅,院落内外高差处理等设计手法打造和谐、有序而具有活力的多元示范住区。

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