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K_1 Group of Finite Dimensional Path Algebra

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Acta Mathematica Sinica,English Series 2001年第2期17卷 273-276页

作者： Xue Jun GUO department of Mathematics. university of Science, and Technology of{2. Hefei. Anhui 2.002.. P. R.{2. Li Bin LI department of Mathematics. Yangzhou university, Yangzhou 2.5002. P. R,{2. 中国科学技术大学数学系安徽合肥扬州大学数学系江苏扬州

In this paper, by calculating the commutator subgroup of the unit group of finite path algebra k△ and the unit group abelianized, we explicitly characterize the K1 group of finite dimensional path algebra over an arb... 详细信息

关键词： Path algebra K1 group

ALMOST GLOBAL EXISTENCE OF DIRICHLETINITIAL-BOUNDARY VALUE PROBLEM FORNONLINEAR ELASTODYNAMIC SYSTEMOUTSIDE A STAR-SHAPED DOMAIN

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Chinese Annals of Mathematics,Series B 2004年第4期25卷 433-454页

作者： XINJIE QINTIEHU InstituteofMathematics FudanUniversityShanghai200433China departmentofMathematics FudanUniversityShanghai200433China

This paper deals with the mixed initial-boundary value problem of Dirichlet type for the nonlinear elastodynamic system outside a star-shaped domain. The almost global existence of solution with small initial data to ... 详细信息

关键词： Nonlinear elastodynamic system Exterior problem Almost global existence

Time-division phase modulated single-photon interference in a Sagnac interferometer

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Chinese Science Bulletin 2003年第16期48卷 1704-1708页

作者： WU Guang, ZHOU Chunyuan & ZENG Heping Key Laboratory of Optical and Magnetic Resonance Spectroscopy and department of Physics, East china {2. university, Shanghai 2.0062. china Correspondence should be addressed to Zeng Heping (e-mail: hpzeng @***) Key Laboratory of Optical and Magnetic Resonance Spectroscopy and department of Physics East China Normal University Shanghai 200062 China

We introduce a stable, long-distance single- photon Sagnac interferometer, which has a balanced con-figuration to efficiently compensate phase drift caused by change of the fiber-optic path. By using time-division phase modulation, single-photon interference was realized at 1550 nm in a 5-km-long as well as 2.-km-long Sagnac fiber loops, with a fringe visibility higher than 90% and long-term sta-bility. The stable performance of the single-photon interfer-ence indicated that the time-division phase-modulated Sag- nac interferometer might readily lead to practical applica-tions in single-photon routing and quantum cryptography.

关键词：单光子干涉干涉仪基本结构相位补偿时分相位调制稳定性量子密码

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理想条件下氡及其子体垂直运移实验数据分析

物理学报 2008年第9期57卷 5452-5457页

作者：谭延亮肖德涛赵桂芝南华大学核科学技术学院

对氡及其子体的长距离运移实验数据进行了分析,发现利用氦氡团簇解释氡的快速向上运移,α粒子的数量远远不够.如果假定氡有很强的从空气中吸附氦气的能力,从而获取足够的氦组成氦氡团簇垂直运移,则又与相关实验中加有氦气后氡及其子体... 详细信息

对氡及其子体的长距离运移实验数据进行了分析,发现利用氦氡团簇解释氡的快速向上运移,α粒子的数量远远不够.如果假定氡有很强的从空气中吸附氦气的能力,从而获取足够的氦组成氦氡团簇垂直运移,则又与相关实验中加有氦气后氡及其子体向上、向下运移概率与自然状态相同的结论矛盾.提出氦氡团簇可能不是氡具有快速向上运移能力的主要原因,氡的快速向上运移能力可能另有更深层次的原因,有待进一步深入研究.

关键词：氡垂直运移氦氡团簇

A Convergent Algorithm for Continuously Optimal Location Problem

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Systems Science and Systems Engineering 1999年第3期9卷 378-384页

作者： MENG Ling\|he\+1\ \ SHI Zhen\|jun\+2. \ WANG Chang\|yu\+3 1. Qingdao Educational College, Qingdao 2.6001, china 2. Institute of Operations Research, Qufu normal {2., Qufu 2.3165, china 3. Institute of Applied Mathematics, Academia Sinica, B

In this paper, the continuously optimal location problem is considered. The strong convexity of the objective function, the Lipschitz continuity of the gradient of the objective function are proved. Furthermore, a variant of conjugate gradient method for continuously optimal location problem is presented and its global convergence is analyzed.

关键词： continuously optimal location problem variant of conjugate gradient method steplength global convergence

A scheme to implement the Deutsch-Josza algorithm on a superconducting charge-qubit quantum computer

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Progress in Natural Science:Materials International 2006年第6期16卷 594-599页

作者： HUO Wenyi and LONG Guilu (Key Laboratory for Quantum Information and Measurements, and department of Physics, Tsinghua university, Beijing 100084,{2. Key Laboratory for Atomic and Molecular NanoSciences, Tsinghua university, Beijing 100084,{2.) [a]Key Laboratory for Quantum Information and Measurements and Department of Physics Tsinghua University Bejjing China [b]Key Laboratory for Atomic and Molecular NanoSciences Tsinghua University Bejing China

We have studied the implementation of the Deutsch-Josza quantum algorithm in a superconducting charge-qubit quantum computer. Different from previous studies, we have used the inductance coupled system of You et al. The detailed pulse sequences have been designed for the four possible functions in a 2.qubit system. The result is generalized to an arbitrary n-qubit system. This scheme will be useful for practical implementation of the algorithm.

关键词： superconducting quantum computer Deutsch-Josza algorithm.

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试论英国崛起中的尼德兰因素

史学集刊 2009年第2期 12-20页

作者：刘景华徐艳丽天津师范大学历史文化学院天津300387

英国的崛起存在外来因素特别是尼德兰因素的参与和推动。从11世纪到18世纪,尼德兰人移居英国经历了四次高潮,这种移民既有尼德兰人逃离内乱或寻求生存和发展新环境的动机,也有英国方面的主观因素,即政府和民众的欢迎态度。对英国崛起有... 详细信息

英国的崛起存在外来因素特别是尼德兰因素的参与和推动。从11世纪到18世纪,尼德兰人移居英国经历了四次高潮,这种移民既有尼德兰人逃离内乱或寻求生存和发展新环境的动机,也有英国方面的主观因素,即政府和民众的欢迎态度。对英国崛起有决定意义的重大经济现象,如呢绒工业的发展,乡村毛纺业的兴起,棉纺业的起步,农业革命的进行,工业革命的资金准备,都与尼德兰移民和资本的到来有密切关系。

关键词：英国崛起英国呢绒业尼德兰移民荷兰资本

Fluorescence Enhancing Effect of OP on Ga(Ⅲ)-ECBBR system and its Analytical Application

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Rare Metals 2001年第2期20卷 130-132页

作者： Jinzhang Gao, Jianniao Tian, Yanchun Zhao, the Yang, Jingguo Hou, Jingwan Kang (Chemistry and Chemical Engineering College, Northwest normal university, Lanzhou 730070,{2.) 西北师范大学甘肃兰州 730070

The fluorophotometric determination of gallium(Ⅲ) With eriochrome blue black R (ECBBR) was investigated in the presence of OP at pH 2.0n.5. The calibration graph has a good linear relationship in the rabid of 1.6×10-7-1.2. 10-5 mol/L Ga(Ⅲ). The effect of foreign ions was studied and the proposed method was applied to the determination of gallium in aluminum alloy.

关键词： gallium, eriochrome blue black R OP aluminum alloy

Mucin-producing urothelial-type adenocarcinoma of prostate

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Mucin-producing urothelial-type adenocarcinoma of prostate