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无线传感器网络的分布式能量有效非均匀成簇算法

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通信学报 2009年第10期30卷 34-43页

作者：尚凤军 Mehran Abolhasan Tadeusz Wysocki 重庆邮电大学计算机科学与技术学院重庆400065 Telecommunications and Information Technology Research institute University of Wollongong Department of Computer and Electronics Engineering University of Nebraska-Lincoln

研究了现有成簇路由算法,提出了分布式能量有效成簇路由算法,该算法主要包括3.分内容:一是选择候选簇头时通过引入平均能量因子来平衡全网节点的剩余能量情况;二是构造了基于能量和距离的能量消耗率函数以平衡节点的能量效率;三是首次... 详细信息

研究了现有成簇路由算法,提出了分布式能量有效成簇路由算法,该算法主要包括3.分内容:一是选择候选簇头时通过引入平均能量因子来平衡全网节点的剩余能量情况;二是构造了基于能量和距离的能量消耗率函数以平衡节点的能量效率;三是首次提出了基于同构单跳网络的分布式能量有效非均匀成簇路由算法。理论和仿真结果均说明该算法优于EECS,生命周期比EECS延长达到约3.%。

关键词：无线传感器网络非均匀成簇能量消耗率函数同构

STUDY OF Ag DIFFUSION INTO Cu SINGLE CRYSTALS BY RUTHERFORD BACKSCATTERING SPECTROMETRY

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Acta Metallurgica Sinica(English Letters) 2003年第5期16卷 332-334页

作者： R.Wang 1) Key Laboratory of Beam Technology and Materials Modification, Ministry of Education, Beijing 100875, China2. institute of Low energy Nuclear Physics, Beijing Normal University, Beijing 100875, China{2. Beijing Radiation Center, Beijing 100875, China Key Laboratory of Beam Technology and Materials Modification Ministry of Education Beijing 100875China institute of Low energy Nuclear Physics Beijing Normal University Beijing 100875 China Beijing Radiation Center Beijing 100875 China

4.0Me V 7Li++ RBS was used for investigations of thermal diffusion of Ag in Cu single crystals. The annealing of samples was carried out in vacuum in the temperature range from 498K to 613.. The element depth concentration profiles transformed from RBS spectra indicate that the diffusion of Ag into Cu is a typical volume diffusion. The Arrhenius parameters corresponding to the diffusion were obtained.

关键词： Ag diffusion single crystal

NONEQUILIBRIUM STATISTICAL THEORY OF FATIGUE FRACTURE(Ⅰ)——THE MICROSCOPIC MECHANISM AND STATISTICAL NATURE OF FATIGUE CRACK GROWTH

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Science in China,Ser.A 1986年第10期29卷 1051-1062页

作者：邢修三 institute of atomic {2. Beijing

In papers (Ⅰ) and (Ⅱ), we try by nonequilibrium statistical concepts and methods to construct a theory of fatigue fracture in connecting mnicroscopic mechanism with macroscopic properties. In this paper the physical picture of fatigue fracture process is described. The stochastic growth equation is given. The dislocation mechanism of growth is discussed. The transport growth rate and fluctuation growth coefficient are obtained, and thus the microcrack distribution function is derived.

关键词： NONEQUILIBRIUM STATISTICAL THEORY OF FATIGUE FRACTURE THE MICROSCOPIC MECHANISM AND STATISTICAL NATURE OF FATIGUE CRACK GROWTH length rate exp

一种基于半马尔可夫网络流量模型的延迟估计算法(英文)

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系统仿真学报 2008年第19期20卷 5053-5057,5061页

作者：朱灵波戴冠中 LIN-SHI Xue-fang RETIF Jean-Marie 任维娟西北工业大学自动化学院陕西西安710072 法国国立里昂应用科学学院安培实验室法国维尔巴纳市69621 中国科学院高能物理研究所北京100049

提出一种基于半马尔可夫网络流量模型的延迟估计算法,用于估计传输链路的延迟超过某个阈值的概率,该值可做为控制器设计及控制策略选择的依据。利用半马尔可夫理论对网络流量进行建模,建立了延迟与网络传输中的队列队长、及队长与网络... 详细信息

提出一种基于半马尔可夫网络流量模型的延迟估计算法,用于估计传输链路的延迟超过某个阈值的概率,该值可做为控制器设计及控制策略选择的依据。利用半马尔可夫理论对网络流量进行建模,建立了延迟与网络传输中的队列队长、及队长与网络流速率的函数关系,之后经过推导和有限分割,得出网络延迟概率计算公式,并分析了该算法的复杂度。在计算布朗运动积分时采用It积分实现。仿真证明该算法是有效、可行的。

关键词：延迟估计半马尔可夫模型网络化控制系统布朗运动 Ito积分

Measurement of ^(64)Zn(n,γ) ^(65)Zn Cross Section

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Chinese journal of nuclear physics 1995年第4期17卷 342-344页

作者： Chen Jin-xiang Shi Zhao-min Tang Guo-you Zhang Guo-hui,institute of Heavy Ion Physics, Peking University, Beijing 100871Lu Han-lin,Zhao Wen-rong and Yu Wei-xiang, China institute of {2. {3., P. O. Box 2.5(3., Beijing 102.13 北京大学重离子物理所北京中国原子能科学院北京

Cross sections of 64（n,γ）（65）Zn reaction are measured in the energy range from 156to 1150 keV by the activation technique. The activities of the products are counted with a highresolution HPGe γ-ray spectrometer. The neutron fluence is determined by （197）Au（n,γ）（198）Aucross section. Experimental activation cross sections are given for the first time. The errors ofthe measured results are 5%-8%.

关键词： Cross section Activation technique Zinc

Toxicological Evaluation of Chicken-Breast Meat with High-Dose Irradiation

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Journal of Integrative Agriculture 2012年第12期11卷 2088-2096页

作者： ZHU Jia-ting FENG Min YAN Jian-min LIU Chun-quan HA Yi-ming GAO Mei-xu YANG Ping WANG Zhi-dong WANG De-ning LI Shu-rong GU Gui-qiang institute of atomic {2. in Application for Agriculture Jiangsu Academy of Agricultural Sciences institute of Farm Product Processing Jiangsu Academy of Agricultural Sciences institute of Agro-Products Processing Science&Technology Chinese Academy of Agricultural Sciences

In this paper, toxicity and safety of high-dose irradiated chicken-breast meat were evaluated. For assays of acute toxicity, genetic toxicity, and sub-chronic toxicity, ames test, mice bone marrow erythrocyte micronucleus, and mice sperm abnormality were performed. The results showed that, in the acute oral toxicity tests, median lethal dose （more than 10 000 mg kg-~） in male and female ICR mice showed no toxicological signs. For subacute 3.-d oral toxicology of irradiated chicken-breast meat with dose of 10, 15 and 2. kGy in both male and female SD rats, no noticeable toxicological effects were observed. It is concluded that chicken-breast meat with high-dose irradiation has no acute toxicity and no genotoxicity, nor harmful effects on the animal body at the tested dosage range. Therefore, high-dose irradiated chicken-breast meat is safe for pet consumption.

关键词： toxicological assessment chicken-breast meat irradiated high dose

Wave reflection and transmission from a single slotted barrier

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Wave reflection and transmission from a single slotted barri...

HOT DIPPING ALUMINIZED COATING AS HYDROGEN PERMEATION BARRIER

第十四届中国海洋（岸）工程学术讨论会

作者： ZHU Da-tong1, 2. ZHU Si-wei3.1. Southeast university, Southeast Traffic Engineering Consultation and Supervision Co., Ltd. Nanjing 2.0018, hina 2. Nanjing Hydraulic Research institute, Department of River and Harbor Engineering, Nanjing 2.002., China 3. Nanjing Municipal Engineering Design institute, Nanjing 2.0018, China)

A direct analytical method is developed to study the interaction of plane water wave with a single slotted barrier. The slotted barrier is assumed thin and rigid plate. Explicit analytical (algebraic) expressions are obtained for reflection wave and transmission wave heights etc. In the formulas all symbols have perfectly apparent physical significance, every parameter can be calculated by the structural and hydrologic parameters. The theoretical predictions of the reflection, transmission and total energy loss coefficients for a single slotted barrier using the present model are compared with laboratory experiments of previous authors, and it is found that the results from this theory are in good agreement with experimental data.

关键词： plane wave single slotted barrier wave reflection and transmission total energy loss

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Acta Metallurgica Sinica(English Letters) 2001年第6期14卷 435-440页

作者： Z. Y Yao, M. Chini, A. Aiello and G. Benamati (China institute of atomic {2., P.O.Box 2.5-51, Beijing 102.l3. China) ( Department of Physics, University of Trento, 3.100 Trento, Italy) ( ENEA CR Brasimone, 4003. Camugnano, Bologna, Italy) China institute of atomic {2. Department of Physics University of Trento ENEA CR Brasimone

The hydrogen permeation experiment of MANET II with hot dipping aluminized coating was performed in temperature range of 573.to 62.0}K, in gas phase and in liquid Pb-17Li phase. The hydrogen permeation reduction factor (PRF) evaluated in gas phase is 62. at 573.K and 2.0 at 62.0}K, and in liquid Pb-17Li phase is 2.-45 at 573.K and 12.3. at 62.0}K. The self-healing of coating is obvious and effective above 673.K. The pressure dependence of permeation flux indicates strong surface contribution. The way of filling hydrogen by continuous flow and/or bubble can increase permeation flux. The result of SEM-EDS shows that the microcrack is on the surface of the wetted part, but not on the not wetted part. The crack is superficial and affects only thin outside layer not penetrate aluminized layer. The surface elemental analysis shows that Al/O atomic ratio changes from 2.3.of not wetted part to about 1 of wetted part. The damage of coating surface seems to be related to the interaction of outside layer with liquid Pb-17Li and thermal stress during heating sample.

关键词： Electroless plating Hydrogen Maraging steel Mechanical permeability

Further research on high-spin structure in ^(161)Lu

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Science China(Physics,Mechanics & Astronomy) 2008年第3期51卷 315-320页

作者： LI YanXia1,2.YU ShaoYing1,2.4,SHEN CaiWan1,5,LI XiaoWei6 & CHEN YongShou3.4 1 School of Science,Huzhou Teachers College,Huzhou 3.3.00,China 2.College of Mathematics,Physics and Information Engineering,Zhejiang Normal University,Jinhua 3.1000,China 3.China institute of atomic energy,Beijing {3.China 4 institute of Theoretical Physics,Chinese Academy of Sciences,Beijing 100080,China 5 Center of Theoretical Nuclear Physics,National Laboratory of Heavy Ion Accelerator of Lanzhou,Lanzhou 73.000,China 6 Department of Physics,Chifeng University,Chifeng 02.001,China School of Science Huzhou Teachers College Huzhou 313000 China College of Mathematics Physics Information Engineering Zhejiang Normal University Jinhua 321000 China China institute of atomic {2. Beijing 102413 China institute of Theoretical Physics Chinese Academy of Sciences Beijing 100080 China Center of Theoretical Nuclear Physics National Laboratory of Heavy Ion Accelerator of Lanzhou Lanzhou 730000 China Department of Physics Chifeng University Chifeng 024001 China

The two-dimensional total routhian surface (TRS) calculations were performed to probe into the triaxial superdeformed characteristics of a strongly populated band X2.in 161Lu. This band was identified as a triaxial superdeformed band by using our TRS method. We also got its formation mechanics,i.e. the neutron-shell correction energy plays a crucial role,while the rotating energy and the deformation-driving effect of high j intruder orbit i1{2.2.also play an additional role.

关键词： TRS method triaxial superdeformation formation mechanism