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research progress in non-equilibrium grain-boundary segregation and intergranular embrittlement

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Progress in Natural Science:Materials International 2006年第2期16卷 109-119页

作者： XU Tingdong (Central Iron & Steel research institute, beijing 100081, china) [a]Central Iron & Steel research institute Beijing China

This paper is a summary of the research progress made by the author in the study of non- equilibrium grain-boundary segregation and intergranular embrittlement during the last 20 years. Some new concepts and new model... 详细信息

关键词： grain-boundaries vacancies segregation embrittlement.

Theoretical research progress in complexity of complex dynamical networks

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Progress in Natural Science:Materials International 2007年第7期17卷 761-774页

作者： Fang Jinqing(Joint Complex Network research Group,china institute of Atomic Energy,beijing 102413,china) [a]Joint Complex Network research Group China Institute of Atomic Energy Beijing China

This article reviews the main progress in dynamical complexity of theoretical models for nonlinear complex networks proposed by our Joint Complex Network research Group(JCNRG).The topological and dynamical properties of these theoretical models are numerically and analytically *** findings are useful for understanding and deeply studying complex networks from macro- scopic to microscopic levels and have a potential of applications in real-world networks.

关键词： Harmonions unifying hybrid preferential model a large unifying hybrid network model quantum interference network nonowire networks generalized local-world model non-local links model evolving model of weighted networks small-world network with the unchanged degree

research on Algorithm M8 Applying to TIP Prediction of china's Strong Earthquake Cases in the Past Decades

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Earthquake research in china 1994年第4期8卷 4-10页

作者： Huang Deyu and Chen YongCenter for Analysis and Prediction,SSB,beijing 100036,china State Seismological Bureau,beijing 100036,china

This paper offers a positive research result of TIP before 16 strong earthquakes in North and Southwest china and their nearby areas since 1979 by using improved algorithm *** result showed that 14 of them were determined to occur within the times of increased *** precaution occupies about 37% of the total space-time *** means we have made quite good results of intermediate-term prediction of strong *** the method could be used as one of the useful means of the intermediate-term prediction of strong earthquakes.

关键词： M8 algorithm Intermediate-term earthquake prediction

Recommendation Method for Contrastive Enhancement of Neighborhood Information

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Computers, Materials & Continua 2024年第1期78卷 453-472页

作者： Hairong Wang beijing Zhou Lisi Zhang He Ma School of Computer Science and Engineering North Minzu UniversityNingxia750021China

Knowledge graph can assist in improving recommendation performance and is widely applied in various person-alized recommendation ***,existing knowledge-aware recommendation methods face challenges such as weak user-item interaction supervisory signals and noise in the knowledge *** tackle these issues,this paper proposes a neighbor information contrast-enhanced recommendation method by adding subtle noise to construct contrast views and employing contrastive learning to strengthen supervisory signals and reduce knowledge ***,first,this paper adopts heterogeneous propagation and knowledge-aware attention networks to obtain multi-order neighbor embedding of users and items,mining the high-order neighbor informa-tion of users and ***,in the neighbor information,this paper introduces weak noise following a uniform distribution to construct neighbor contrast views,effectively reducing the time overhead of view *** paper then performs contrastive learning between neighbor views to promote the uniformity of view information,adjusting the neighbor structure,and achieving the goal of reducing the knowledge noise in the knowledge ***,this paper introduces multi-task learning to mitigate the problem of weak supervisory *** validate the effectiveness of our method,experiments are conducted on theMovieLens-1M,MovieLens-20M,Book-Crossing,and Last-FM *** results showthat compared to the best baselines,our method shows significant improvements in AUC and F1.

关键词： Contrastive learning knowledge graph recommendation method

维普期刊数据库评论

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国家高山滑雪中心,北京,中国

世界建筑 2024年第4期 24-25页

作者： china Architecture Design&research Group 中国建筑设计研究院有限公司

作为国内第一座按冬奥赛事标准建设的高山滑雪场馆,国家高山滑雪中心承办了北京2022年冬奥会和冬残奥会高山滑雪项目比赛。场馆用地范围432.4hm^(2),场地落差960m。场馆内各类雪道总长度23.1km,围绕雪道规划形成四大主要建设区域,建筑面... 详细信息

作为国内第一座按冬奥赛事标准建设的高山滑雪场馆,国家高山滑雪中心承办了北京2022年冬奥会和冬残奥会高山滑雪项目比赛。场馆用地范围432.4hm^(2),场地落差960m。场馆内各类雪道总长度23.1km,围绕雪道规划形成四大主要建设区域,建筑面积43,200m^(2)。

关键词：高山滑雪用地范围残奥会场馆

P2P traffic optimization

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Science china(Information Sciences) 2012年第7期55卷 1475-1492页

作者： ZHANG GuoQiang 1,2 ,TANG MingDong 3 ,CHENG SuQi 2,4 ,ZHANG GuoQing 2 ,SONG HaiBin 5 ,CAO JiGuang 6 & YANG Jing 7 1 School of Computer Science and Technology,Nanjing Normal University,Nanjing 210046,china 2 institute of Computing Technology,Chinese Academy of Sciences,beijing 100190,china 3 School of Computer Science and Engineering,Hunan University of Science and Technology,Xiangtan 411201,china 4 Graduate University of Chinese Academy of Sciences,beijing 100190,china 5 Nanjing R&D Center,Huawei Technologies,Nanjing 210012,china 6 china Academy of Telecommunication research of MIIT,beijing 100191,china 7 china mobile research institute,beijing 100053.china 1. School of Computer Science and Technology Nanjing Normal University Nanjing 210046 China2. Institute of Computing Technology Chinese Academy of Sciences Beijing 100190 China3. School of Computer Science and Engineering Hunan University of Science and Technology Xiangtan 411201 China4. Graduate University of Chinese Academy of Sciences Beijing 100190 China5. Nanjing R&D Center Huawei Technologies Nanjing 210012 China6. China Academy of Telecommunication Research of MIIT Beijing 100191 China7. China Mobile Research Institute Beijing 100053 China

Peer-to-peer (P2P) based content distribution systems have emerged as the main form for content distribution on the Internet,which can greatly reduce the distribution cost of content providers and improve the overall system ***,the mismatch between the overlay and underlay networks causes large volume of redundant traffic,which intensifies the tension between P2P content providers and ***,how to efficiently use network resources to reduce the traffic burden on the ISPs is crucial for the sustainable development of P2P *** paper surveys the state-of-art P2P traffic optimization technologies from three perspectives:P2P cache,locality-awareness and data *** details,comparison between these technologies and their applicabilities are presented,followed by a discussion of the issues that remain to be addressed and the direction of future content distribution research.

关键词： P2P traffic localization P2P traffic optimization P2P cache locality-awareness network coding content-centric network

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) Changsha Res Inst Min & Met Changsha 410012 Peoples R China Gen Res Inst NonFerrous Met Beijing 100088 Peoples R China

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

Magnetic Properties and Oxygen Content of Nanocrystaline FeCuNbSiB Alloy Annealed in Hydrogen and Air

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Journal of Iron and Steel research International 1997年第1期4卷 33-36页

作者： Chen WenzhiCentral Iron and Steel research institute, MMI, beijing (100081), china Ctrl. Iron and Stl. Res. institute MMI lieijing 100081 China

Soft magnetic properties and distribution of oxygen are investigated for the nanocrystalline Fe 73.5 Cu 1Nb 3Si 13.5 B 9 alloy annealed in hydrogen and air respectively by means of magnetic measurements, X ray diffraction, Auger energy spectra and X ray photoelectron analysis. The oxygen content at the surface of the strips can be as high as 39 at.% after air annealing. The oxygen is concentrated mainly in the surface layer up to 30 nm in form of Fe 2O 3 and SiO 2. Excellent magnetic properties can still be reached (except for initial permeability μ o) by air annealing. The optimum temperature for the air annealing decreases by 40 ℃ than that of hydrogen annealing.

关键词： nanocrystalline alloy annealing magnetic property oxygen

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Designing for Long Campaign Life Blast Furnace (2)-The Simulation of Temperature Field of Lining and Cooling Apparatus

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International Journal of Minerals,Metallurgy and Materials 2000年第1期14卷 30-33页

作者： Qingguo Xue Weiguo Yang Susen Cheng Maolin Wu Tianjun Yang Metallurgy School, University of Science and Technology beijing, beijing 100083, china The Center of Engineering and research for Iron and Steel, 100053, china Metallurgy School University of Science and Technology Beijing Beijing 100083 China Center of Engineering and research for Iron and Steel China

Through the numerical modeling of temperature field for Blast Furnace (BF) lining and stave coolers, it can tell designers how to design a cooler which the hot surface temperature is less than its critical temperature under very high heat flux. Applying low heat re- sistance lining and staves cooler to BF is good for a layer of slag skull frozen on the hot surface of cooling stave. As long as the slag skull can stand, the furnace wall is stable and the heat loss of furnace does not increase. This is the basic principle for designing long campa- ignship BF.

关键词： blast furnace numerical modeling, stave cooler slag skull temperature field