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[期刊论文] 作者：Yan Hangyu,
来源：数学物理学报（英文版） 年份：2004
We first introduce the concepts of absolutely E-pure modules and Epure split modules. Then, we characterize the IF rings in terms of absolutely E-pure modules....
[期刊论文] 作者：Qiming YAN,
来源：数学年刊B辑 年份：2004
In this article,some uniqueness theorems of meromorphic mappings in several complex variables sharing hyperplanes in general position are proved with truncated...
[期刊论文] 作者：LI Yan,
来源：海外英语 年份：2004
This paper studies a short poem by Robert Frost at the macro level, examining the textual and interpersonal grammatical metaphor. Then a closer examination at m...
[期刊论文] 作者：WANGHai -yan,
来源：读与写 年份：2004
本文分析了现今大学英语教学的现状和特点,并就有关问题提出大学英语改革的思路扣方法.本文认为,由浙江大学外语系设计并试验了从教学思想到教学方法的与之配套教材符合时代...
[期刊论文] 作者：Yan Xiangqiao,
来源：固体力学学报（英文版） 年份：2004
This paper presents an extension of a displacement discontinuity method with cracktip elements (a boundary element method) proposed by the author for fatigue cr...
Synthesis and Crystal Structure of a New Silver(I) Isonicotinate Coordination Polymer: [(Ag3L2)(ClO4
[期刊论文] 作者：YAN Ze-Qun,
来源：结构化学 年份：2004
The title complex [(Ag3L2)(ClO4)]n 1, where HL = isonicotinic acid, has been prepared from the reaction of isonicotinic acid with AgClO4·H2O at room temperatur...
[期刊论文] 作者：YAN Zhen-Ya,
来源：理论物理通讯 年份：2004
We obtain B Backlund transformation and some new kink-like solitary wave solutions for the generalized Burgers equation in (2+1)-dimensional space, ut + (u -1u...
New Similarity Reductions and Compacton Solutions for Boussinesq-Like Equations with Fully Nonlinear
[期刊论文] 作者：YAN Zhen-Ya,
来源：理论物理通讯 年份：2004
In this paper, similarity rcductions of Boussinesq-like equations with nonlinear dispersion (simply called B(m, n) equations) utt = (un)xx + (um) which is a gen...
[期刊论文] 作者：YAN Hai-feng,
来源：数学的实践与认识 年份：2004
讨论了股票价格过程遵循几何分式Brown运动的欧式期权定价.由于该过程存在套利机会使得传统的期权定价方法(如资本资产定价模型(CAPM),套利定价模型(APT),动态均衡定价理论(D...
New Symmetry Reductions, Dromions-Like and Compacton Solutions for a 2D BS(m, n) Equations Hierarchy
[期刊论文] 作者：YAN ZhenYa,
来源：理论物理通讯 年份：2004
We have found two types of important exact solutions, compacton sohuttions, which are solitary waveswith the property that after colliding with their own kind,...
[期刊论文] 作者：YAN PING,
来源：数学年刊B辑 年份：2004
By means of the continuous Glimm functional,a proof is given on the global existence of classical solutions to Cauchy problem for general first order quasilinea...
Abundant Symmetries and Exact Compacton-Like Structures in the Two-Parameter Family of the Estevez-M
[期刊论文] 作者：YAN Zhen-Ya,
来源：理论物理通讯 年份：2004
The two-parameter family of Estevez-Mansfield-Clarkson equations with fully nonlinear dispersion (called E(m, n) equations), (uzm)zzr + γ(unzur)z + urr = 0 whi...
[期刊论文] 作者：YAN Fan-yong,
来源：农药 年份：2004
介绍了新型烟酰胺类杀菌剂啶酰菌胺,内容涉及化学名称、理化性质、毒性、创制经纬、作用机理、药效结果、专利概况与合成方法等....
Abundant Similarity Reductions and Dromion-Like Solutions to the Generalized Kroteweg-de Vries Equat
[期刊论文] 作者：YAN Zhen-Ya,
来源：理论物理通讯 年份：2004
In this paper,eight types of (1-+1)-dimensional similarity reductions which contain variable coefficient equation,are obtained for the generalized KdV equation...
New Doubly Periodic Solutions of Nonlinear Evolution Equations via Weierstrass Elliptic Function Exp
[期刊论文] 作者：YAN Zhen-Ya,
来源：理论物理通讯（英文版） 年份：2004
A Weierstrass elliptic function expansion method and its algorithm are developed in this paper. The method changes the problem solving nonlinear evolution equat...
[期刊论文] 作者：Gu Yan,
来源：数学研究通讯 年份：2004
Let R be a commutative Noetherian ring, I and J be two ideals of R, and M be an R-module. We study the cofiniteness and finiteness of the local cohomology modul...
The Cauchy problem about Dirac-wave map from the 2-dimension Minkowski space to a complete Riemannia
[期刊论文] 作者：Yan ZHANG,
来源：中国科学A辑（英文版） 年份：2004
When a target manifold is complete with a bounded curvature, we prove that there exists a unique global solution which satisfies the Euler-lagrange equation of...
New Soliton Solutions with Compact Support for a Family of Two-Parameter Regularized Long-Wave Bouss
[期刊论文] 作者：YAN ZhenYa,
来源：理论物理通讯（英文版） 年份：2004
Searching for special solitary wave solutions with compact support is of important significance in soliton theory. In this paper, to understand the role of nonl...
[期刊论文] 作者：LI Yan,
来源：化学试剂 年份：2004
研究了一种以对氯苯甲醛和邻氨基硫酚为底物合成标题化合物的新方法.该方法在无溶剂条件下以固态研磨方式进行,具有设备简单、条件温和、反应时间短、环境友好等优点....
[期刊论文] 作者：LIU Yan,
来源：环境科学与技术 年份：2004
在保证足够的准确度、精密度和灵敏度的前提下,采用索式萃取、浓硫酸净化、国产OV-17毛细管色谱柱和ECD检测器,通过优化实验条件分析河域底泥中六六六(BHC)和滴滴涕(DDT)等六...
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