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NONLINEAR RESPONSE OF A MOORING-LINE FOR A GIVEN HARMONIC LONGITUDINAL EXCITATION

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China Ocean Engineering 1987年第2期1卷 48-54页

作者： Sun Mingguang (zhongshan university, Guangzhou) zhongshan Univ Guangzhou China Zhongshan Univ Guangzhou China

In the present paper, the resonant response of a vertical mooring-line in neutral buoyancy for a given harmonic longitudinal excitation is discussed. The law of stress-strain is nonlinear. For the above case, a nonlinear equation and corresponding boundary conditions are given. Based on the singular perturbation method, a quasi-periodic solution is obtained. There exists bifurcations through out the resonant region. The stability of the bifurcation solutions is *** method in the present paper can be extended for solving the subharmonic response.

关键词： line NONLINEAR RESPONSE OF A MOORING-LINE FOR A GIVEN HARMONIC LONGITUDINAL EXCITATION LINE

ON THE MODULI NUMBER OF PLANE CURVE SINGULARITIES WITHONE CHARACTERISTIC PAIR

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Chinese Annals of Mathematics,Series B 1999年第4期20卷 407-412页

作者： CHEN HAO(Department of Mathematics, zhongshan university, Guangzhou 510275, China) Department of Mathematics Zhongshan University Guangzhou 510275 China

The author gives another linear-algebraic proof of the famous result of Zariski, Delorme,Briancon- Granger- Maisonobe about the moduli number of plane curve singularities with the same topological type as Xa + Yb = 0 (i.e.,with one characteristic pair). Since the original proof depends very much on the division theorem of Briancon, it cannot be generalized to higher dimensions. It is hopeful that the proof here will be applied to the higher dimensional cases.

关键词：模数平面曲线单一性模理论

SIMPLE OCKHAM ALGEBRAS

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Chinese Annals of Mathematics,Series B 1996年第2期17卷 213-218页

作者： FANG JIE Department of Mathematics, zhongshan university, Guangzhou 510271, China. 中山大学数学系广东广州

An algeber L is said to be simple, if its congruence lattice Con L reduces to the 2-elementchain {w,v}. This paper describes the structure of finite simple Ockham algebras.

关键词： Ockham代数单代数同余格二元链

A Short Essay on the Leftspeak during China's Cultural Revolution

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外语教学与研究 1989年第2期21卷 16-19页

作者： Wang Zongyan zhongshan university

This paper tries to show in what ways China’s Cultural Revolution affected the use of the Chinese language. It will quote expressions and catch-phrases of the time and dissect them from the lexical, semantic and prag... 详细信息

关键词： A Short Essay on the Leftspeak during China’s Cultural Revolution

ID-WAVELETS METHOD FOR HAMMERSTEIN INTEGRAL EQUATIONS

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Journal of Computational Mathematics 1998年第6期16卷 499-508页

作者： Xian-biao Wang Wei Lin (Department of Mathematics, zhongshan university, Guangzhou 510275, China) 中山大学数学系广东广州

The numerical solutions to the nonlinear integral equations of Hammerstein-type y(t) = f(t) + integral(0)(1)k(t, s)g(s, y(s))ds, t is an element of [0,1] are investigated. A degenerate kernel scheme basing on ID-wavelets combined with a new collocation-type method is presented. The Daubechies interval wavelets and their main properties are briefly mentioned. The rate of approximation solution converging to the exact solution is given. Finally we also give two numerical examples.

关键词： nonlinear integral equation interval wavelets degenerate kernel

PREPARATION　OF　NANOCOMPOSITE　BINARY　GADOLINIUM　ALLOYS　AND　THEIR　ENHANCED　MAGNETIC　ENTROPY　CHANGE

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中国有色金属学会会刊：英文版 1996年第3期6卷 86-91页

作者： Zhang Jieli Shao Yuanzhi(Department ofphysics, zhongshan university, Guangzhou 510275) Department of Physics Zhongshan University Guangzhou 510275 China

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ＰＲＥＰＡＲＡＴＩＯＮＯＦＮＡＮＯＣＯＭＰＯＳＩＴＥＢＩＮＡＲＹＧＡＤＯＬＩＮＩＵＭＡＬＬＯＹＳＡＮＤＴＨＥＩＲＥＮＨＡＮＣＥＤＭＡＧＮＥＴＩＣＥＮＴＲＯＰＹＣＨＡＮＧＥ￥ＺｈａｎｇＪｉｅｌｉ；ＳｈａｏＹｕａｎｚｈｉ（Ｄｅｐａｒｔｍｅｎｔｏｆｐｈｙｓ...

关键词： nanocomposites magnetic refrigeration rare earth

Exploring effective policies for underground water management in artificial oasis: a system dynamics analysis of a case study of Yaoba Oasis

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Journal of Environmental Sciences 2001年第4期13卷 476-480页

作者： XU Hong gang (Earth and Environment School, zhongshan university, Guangzhou 650021. ) 中山大学广东 650021

The development of oasis along the edge of the Tengerli Desert, where underground water is available, is one of the major strategies to reallocate 'ecological refuges' from their seriously degraded grasslands to agriculturally cultivable land. Yet, underground water resources, the major constraint, hate not been fully integrated in the development process. Therefore, the decline of water resources and deterioration of water quality caused by over-consumption of water resources has begun to hinder further development and has even fed to the abandonment of some oasis. A system dynamics modeling approach is applied to analyze the water use and water management structures in Yaoba Oasis as a case study. The study attempts to identify the characteristics of major feedback loops, which dominate the over-use of underground water resources leading to the deterioration of water resources in quantity and quality.

关键词： system dynamics delay underground water management oasis feedback analysis

Twisting products of Hopf algebras and quantum double

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Chinese Science Bulletin 1999年第4期44卷 309-312页

作者： HU GuoquanDepartment of Mathematics, zhongshan university, Guangzhou 510275, China Department of Mathematics Zhongshan University Guangzhou China

Let σ be a skew pairing on the pair (B, H) of Hopf algebras, and A a left(B, H) bicomodule algebra. A new algebra A_σ, called the twisting product of A, is obtained by alternating the multiplication of A using σ and the coactions on A by B and H. σ induces a skew pairing on (B B,H H), and the regular comodule structures of B and H induce a left (B B,H H) bicomodule algebra structure on B H, and the associated twisting product (B H)is a Hopf algebra, with the tensor coalgebra structure; moreover, A_σ remains a left (B H),comodule algebra. In particular,a description of the Drinfeld double is obtained from the twisting point of view. In addition, smash products appear as special cases. Dually, the construction of twisting coproducts is introduced by using copairings, and the Drinfeld quantum codouble and some smash coproducts are described.

关键词： skew (co)pairing twisting (co)products (co)quantum double.

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高校异地办学:图书馆管理新模式

图书馆论坛 2003年第2期23卷 122-123,126页

作者：秦剑中山大学图书馆广东广州510275

探讨了中山大学异地办学后 ,学校图书馆实行延伸和属地管理相结合的管理新模式 ,介绍了中大珠海校区图书馆的员工编制、组织架构以及派驻员工、合同制员工和学生工的管理措施。

关键词：高校异地办学图书馆管理组织架构员工编制人事管理