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Chromatic Uniqueness of K4-Homeomorphs with Girth 8

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Journal of Mathematical Research with Applications 2012年第3期32卷 269-280页

作者： Weina SHI 1 ,Yongliang PAN1,Yan ZHAO 2 1.Department of Mathematics,University of Science and Technology of China, Anhui 230026,P.R.China 2.Institute of Electronics Engineering,China Academy of Engineering Physics, Sichuan 621900,P.R.China Department of Mathematics University of Science and Technology of China Anhui 230026 Institute of Electronics Engineering China Academy of Engineering Physics Sichuan 621900

In this paper,we determine all graphs of K4-homeomorphs of girth 8 which are chromatically unique.

关键词： chromatic polynomial chromatically unique graph K4-homeomorph.

Surface quality of large KDP crystal fabricated by single-point diamond turning

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Surface quality of large KDP crystal fabricated by single-po...

2nd International Symposium on Advanced Optical Manufacturing and Testing Technologies

作者： Hou Jing Zhang Jianfeng Chen Jinlin Zhang Xiaoli Hu Dezhi ( Research Center of Laser Fusion CAEP P.O Box919-987 Mianyang 621900 China )

＜正＞Ptassium dihydrogen phosphate （KDP） crystals are used as key components in high power density solid-state laser for Inertial Confinement Fusion. Surface quality is an important factor for KDP crystals implemented in high power lasers. At present Single Point Diamond Turning（SPDT） is the only way to get the required transmitted wavefront and damage threshold KDP. The paper introduces something about the defects of KDP crystals fabricating and analyses some reasons. Based on the analysis of the reasons, the process parameters can be adjusted to meet the critical requirements of high energy density application. A piece of 320×320 mm2 KDP is acquired. The roughness of the 320×320 mm2 crystal surface was already to reach an rms about 5 nm. Data were measured by an interferometric microscope. The wavefront p-v is lower than 0.5λ（λ=632nm）.

关键词： KDP crystal SPDT the defect

ONE DIMENSIONAL NUMERICAL SIMULATION OF LASER ACCELERATED FLYER PLATES

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ONE DIMENSIONAL NUMERICAL SIMULATION OF LASER ACCELERATED FL...

祝贺郑哲敏先生八十华诞应用力学报告会

作者： Gu Zhuowei, Sun Chengwei, Zhao Jianheng, Zhang Ning Institute of Fluid Physics, Chinese Academy of Engineering Physics P.O. Box 919-113, Mianyang, Sichuan 621900, China

A one-dimensional(1-D)bulk absorption model to simulate the accelerating processof laser-driven flyer plate is presented,in which the laser energy deposition and acceleration offlyer plates are *** the laser intensity range of 108-1010W/cm2,the gasdynamicalbehavior of the ablated foil plasma is described with a modified 1-D Lagrangian *** histories and profiles of physical parameters including pressure,temperature,veloc-ity,opacity and average ionization charge number are given by this *** to thecalculation,an aluminum foil of original thickness of 10μm may be accelerated to a velocity ofabout 2 km/s,the calculated average ionized charge number of plasma Z is greater than 3,peaktemperature and plasma pressure are in the order of 2.1 ×105K and 1.5 ×103GPa,respectively,and the maximum Rosseland opacity is about 1.9×*** calculated particle velocitydistribution in plasma is linear that confirms the assumption employed in the Gurney model.

关键词： laser driven ablation numerical simulation

Radar Targets Identification Based on Perfect Parametric Modeling Using Artificial Neural Networks

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Radar Targets Identification Based on Perfect Parametric Mod...

2002年IEEE十区计算机、通信、控制和电机工程会议

作者： WANG Jun Institute of Electronic Engineering, China Academy of Engineering Physics P.O. Box 919—515,Mianyang, Sichuan, 621900, CHINA, Fax: 86-816-2487594, E-mail:

In this paper, we have developed a new targetrecognition procedure. In order to efficiently obtain featurevectors for target discrimination, the closed-formexpression of geometrical wave front have been derived toprovide efficient and accurate computation. The resultingsmall dimensional feature vectors based on the developedextractor are identified using the well-known ANNclassifier. The results show that the presented scheme givessuccessful correct automatic target recognition (ATR) in thelow SNR with low computational costs. Although this workconcentrates mainly on parametric modeling ofelectromagnetic target, further work should study moreefficient ANN architecture when the number of candidatesis dramatically increased in the practice.

关键词： Inverse problem automatic target recognition radar image parametric feature vectors artificial neural networks

Calculating Radioactivity of Spent Fuel Elements of No. 300 Reoctor with ORIGEN 2

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Calculating Radioactivity of Spent Fuel Elements of No. 300 ...

第13届太平洋地区核能大会

作者： Wei Chen Zhiyong Hu Rui Yang Institute of Nuclear Physics and Chemistry China Academy of Engineering Physics P.O. BOX 919-211, Mianyan, Sichuan 621900, China

＜正＞In this paper, transplanting the radioactivity calculation program from NDP-386platform to Windows platform is introduced. The usages of Operation DataProcessing Program, Composition Data Processing Program, Cross-section LibraryRevising Program and Result Data Extracting Program are described. Calculation dataof some fuel elements are given. Comparison of the calculation data with experimentdata is done.

关键词： Radioactivity Spent fuel Reactor

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共享信息的文化网格

信息与电子工程 2003年第4期1卷 253-256页

作者：李幼平中国工程物理研究院四川绵阳621900

随着存储技术的进步,利用直播卫星等数字广播通道和整合大量文化资源的内容定位技术,可以建立一个把信息送达全国城乡,任家庭自由收藏、取用的全民共享信息的人文环境:“文化网格”,它是实现大规模远程教育、终身教育和电子文化传媒发... 详细信息

随着存储技术的进步,利用直播卫星等数字广播通道和整合大量文化资源的内容定位技术,可以建立一个把信息送达全国城乡,任家庭自由收藏、取用的全民共享信息的人文环境:“文化网格”,它是实现大规模远程教育、终身教育和电子文化传媒发行的一种理想机制。

关键词：文化网格通信技术信息共享 UCL 文化信息直播卫星数字广播数学模型

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长脉冲相对论速调管中束流脉冲缩短的研究

物理学报 2004年第4期53卷 1129-1135页

作者：黄华范植开谭杰马乔生甘延青常安碧中国工程物理研究院应用电子学研究所绵阳621900

L波段长脉冲相对论速调管放大器研究中 ,长脉冲强流相对论电子束 (IREB)经过输入腔和中间腔间隙后的脉冲缩短问题 .分析了造成束流脉冲缩短的主要机理之一是高频系统的角向非均匀模式与电子束相互作用而使得束流扩散形成的 ,并经过实验... 详细信息

L波段长脉冲相对论速调管放大器研究中 ,长脉冲强流相对论电子束 (IREB)经过输入腔和中间腔间隙后的脉冲缩短问题 .分析了造成束流脉冲缩短的主要机理之一是高频系统的角向非均匀模式与电子束相互作用而使得束流扩散形成的 ,并经过实验参数的调节 ,减轻了长脉冲IREB的脉冲缩短问题 ,得到了较强的基波调制电流 .从长脉冲加速器引出 50 0kV ,3 5kA ,1 3 μs的电子束 ,经过输入腔和两个群聚腔的调制后 ,得到了 2 0kA的基波调制电流 ,束流脉冲宽度由 0 3 μs增加到 1μs 。

关键词：速调管放大器脉冲缩短高功率微波长脉冲强流相对论电子束束流扩散脉冲宽度

ESTABLISHMENT OF SURFACE ROUGHNESS PREDICTION MODEL FOR TURNING BRITTLE MATERIALS

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ESTABLISHMENT OF SURFACE ROUGHNESS PREDICTION MODEL FOR TURN...

2006年中国机械工程学会年会暨中国工程院机械与运载工程学部首届年会

作者： CHEN Jie, TIAN Guangxue, CHI Yonggang, LIU Mei, SHAN Dongwei China Academy of Engineering Physics, P. O. Box 919-71, Mianyang 621900, China

Surface roughness prediction model of brittle materials turning by regression analysis method has been studied in this paper. By the prediction model the influence of cutting speed, rate of feed and d

关键词： Surface roughness prediction model turning.

国家点火装置(NIF)点火靶制备技术研究进展

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物理 2009年第12期38卷 914-919页

作者：杜凯唐永建中国工程物理研究院激光聚变研究中心绵阳621900

文章介绍了国家点火装置(NIF)点火靶制备技术在近年来取得的一些最新进展,主要内容包括芯轴与靶丸的制备,氘氚(DT)冰层的均匀化等方面.

关键词：国家点火装置(NIF) 靶丸柱腔