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On the Third and Fourth Power Moments of Fourier Coefficients of Cusp Forms

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Acta Mathematica Sinica,English Series 1997年第4期13卷 443-452页

作者： Cai Yingchun department of Mathematics, shandong normal university, jinan 250014, china 山东师范大学数学系山东济南

The asymptotic formulae for the third and fourth power moments of Fourier coefficients of cusp forms are proved in this paper.

关键词： Cusp form Fourier coefficients The estimation of mean value Asymptotic formula

On the Distribution and Moments of the Fourier Coefficients of Cusp Forms

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Acta Mathematica Sinica,English Series 1997年第3期13卷 289-294页

作者： Cai Yingchun (department of Mathematics,shandong normal university,jinan 250014,china) department of Mathematics Shandong Normal University 250014 Jinan China

Two theorems about the distribution and moments of the Fourier coefficients of cusp forms are proved in this paper.

关键词： Distribution Moment Cusp form Fourier coefficient

A study on neogene volcanic landforms of the middle Tanlu fault belt

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Journal of Geographical Sciences 2000年第4期10卷 121-128页

作者： HAN Mei (Geography department, shandong normal university, jinan 250014,china) 山东师范大学山东济南

The west block of the middle belt of TanLu fault belt is one of the areas where volcanic landforms are mainly distributed. This paper divides the volcanic landforms into four grades according to formation, morphology, and ingredient of matter. Lava cones are divided into two types based on the force of top-support and the fluid form of magma: the arc-projecting type and spring-spilling type. Furthermore, the courses of development of volcanic landforms are divided into three stages according to the form and strength of volcanic activities.

关键词： volcanic landforms Neogene TanLu fault belt

Discussion of Population Modernization Theory and Actuality Analysis of Population Modernization in china

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Chinese Journal of Population,Resources and Environment 2004年第3期2卷 57-59页

作者： Wang Shu shandong normal university, jinan 250014, china shandong normal university jinan 250014 China

This paper discusses the basic concept and connotation of population modernization. The author briefly analyzes the actuality of population modernization in china, gives some advice and puts forward some measures.

关键词： population modernization theory summarization connotation

STRUCTURE AND MAGNETIC PROPERTIES OF Fe/Pd COMPOSITIONALLY MODULATED FILMS

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Acta Metallurgica Sinica(English Letters) 1993年第8期6卷 112-115页

作者： ZHANG Lin LIU Yihua shandong university,jinan,china WANG Hao Dongnan university,Nanjing,china engineer,department of physics,shandong university,jinan 250100,china shandong Univ Jinan China

Metal Fe/Pd compositionally modulated films(CMFs) were prepared by vapour depo- sition from two sources onto glass substrate under *** modulation and crystal structures of the films were examined by X-ray *** magnetic properties were determined by vibrating sample *** Pd layers in the Fe/Pd CMFs are of fcc structure,and the Fe layer structure transits from bcc into amorphous,state with decreasing thickness of Fe *** dependence of specific saturation magnetization on thickness of Fe layers has also been discussed.

关键词： compositionally modulated films modulated structure specific saturation magnetization

Bifurcation of Nonlinear Problems Modeling Flows Through Porous Media

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Acta Mathematica Sinica,English Series 1998年第1期14卷 125-134页

作者： Liu Xiyu department of Mathematics, shandong normal university, jinan 250014, china

This paper deals with a class of nonlinear boundary value problems which appears in the study of models of flows through porous media. Existence results of asymptotic bifurcation and continua are reported both for ope... 详细信息

关键词： Bifurcation Continua Operator theory Flow through porous media

CHARACTERIZATIONS OF PROPER EFFICIENT SOLUTIONS IN TERMS OF SADDLE POINTS AND DUALITY

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Systems Science and Mathematical Sciences 1992年第1期5卷 9-18页

作者： LI Shizheng (shandong normal university,jinan 250014,china) 山东师范大学山东济南

In this paper we characterize the proper efficient solution of a mul-tiobjective programming problem(P)in terms of the saddle point criterion of anew problem(S)and establish a pair of dual problems(S_α)and(D_α)in order todecide the proper efficient solution by the strong *** also give methodof characterization in terms of the saddle point criterion of(P).Finally,we provethat every efficient solution of the matrix linear programming problem is a properefficient solution.

关键词： Efficient solution proper efficient solution saddle point criterion duality perturbation function matrix linear programming problem

PROPER EFFICIENT SOLUTIONS AND PROPER SADDLE POINTS

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Systems Science and Mathematical Sciences 1993年第3期6卷 245-251页

作者： LI Shizheng shandong normal university, jinan 250014, china

This paper offers a characterization method for the proper efficient solution ofthe multiobjective programming problem in terms of the proper saddle point and proves anecessary and sufficient condition for the equivalence between the proper efficient solutionand the associated proper saddle point by using the duality of a pair of problems.

关键词： Proper efficient solution proper saddle point dual problems strong duality

Electronic Structure of New Superconducting Perovskite MgCNi3

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Journal of Materials Science & Technology 2004年第2期20卷 203-205页

作者： Li CHEN, Hua LI and Liangmo MEIphysics and Microelectronic School, shandong university, jinan 250100, china department of physics, Linyi Teachers university, shandong 276005, china Phys. and Microelectron. Sch. Shandong Univ. Ji'nan 250100 China Dept. of Phys. Linyi Teachers Univ. Linyi 276005 China

The electronic structures of new superconducting perovskite MgCNi3 and related compounds MgCNi2T (T=Co, Fe, and Cu) have been studied using MS-Xa method. In MgCNi3, the main peak of density of states is located below the Fermi level and dominated by Ni d. From the results of total energy calculations, it was found that the number of Ni valence electron decreases faster for the Fe-doped case than that for the Co-doped case. The valence state of Ni changes from +1.43 in MgCNi2Co to +3.02 in MgCNi2Fe. It was confirmed that Co and Fe dopants in MgCNi3 behave as a source of d-band holes and the suppression of superconductivity occurs faster for the Fe-doped case than that for the Co-doped case. In order to explain the fact that Co and Fe dopants in MgCNi3 behave as a source of d-band holes rather than magnetic scattering centers that quench superconductivity, we have also investigated the effects of electron (Cu) doping on the superconductivity and found that both electron (Cu) doping and hole (Co, Fe) doping quench superconductivity exist. Comparing with the hole (Co) doping, there was no much difference between Cu and Co doping. This suggests that Co and Fe doping do not act as magnetic impurity.

关键词： Electronic structure Superconductivity Density of states