非对称椭圆变分不等式多重网格法的收敛性

The multigrid method is an efficient numerical iteration algorithm for solving elliptic variational problems. This algorithm is applied in this paper to solve asymmetric elliptic variational inequalities. Its convergence properties are discussed and prove     

I2／2I^—非对称体系的光谱电化学研究

用ＦＯＳＥＣＳ测定了不同温度下Ｉ２／２Ｉ－电对的Ｅ０＇及ｎ值，由此求得了这一体系的热力学函数和条件平衡常数．     

河川径流水文干旱分析

根据河川径流记录,应用Kriging优化内插方法,按照游程理论及截距法分析干旱历时、干旱烈度及其条件概率等特征值,评价区域水文干旱,为干旱预报和水文资源管理提供依据。     

SVPWM原理及逆变技术的仿真研究

清代的“乾嘉学派”似乎已经暗示了经学现代化的某种可能,然而其以“小学考据”替换“经学诠释”甚至发展为“语典之学”,却无形中对经学本身造成了冲击。而“古史辨派”则以其所标榜的“疑古”精神,意图明确地想要推翻传统经学的根基。但是,在“后批判”时代的今天,利科有关“第二朴真”的命题却为我们重拾经学信仰提供了某种新的契机。此外,西方的现代诠释学,也为“经学”向“后经学”的转变准备了必要的理论资源。     

H-增生算子的性质及其在变分包含中的应用

建立了算子是H-增生算子的充分和必要条件,并讨论了Banach空间中的一类新的含有H-增生算子的广义变分包含问题.     

Developmental Analysis of Genetic Behavior of Brown Rice Width in indica-japonica Hybrids

One of the most effective ways of enhancing rice yield is the utilization of the strong inter-subspecific hybrid heterosis between indica rice and japonica rice in replacement of inter-varietal hybrid heterosis being widely applied. Recently, great progress has been made to increase rice yield in several countries e.g. Japan, Korea, China etc [1]. For example, an indica-japonica hybrid rice combination ‘Xieyou 9308’, which was derived from an indica cytoplasmic male sterile line Xieqingzao…     

Information entropy measures for stand structural diversity: Joint entropy

Structural diversity is the key attribute of a stand. A set of biodiversity measures in ecology was introduced in forest management for describing stand structure, of which Shannon information entropy (Shannon index) has been the most widely used measure of species diversity. It is generally thought that tree size diversity could serve as a good proxy for height diversity. However,tree size diversity and height diversity for stand structure is not completely consistent. Stand diameter cannot reflect height information completely. Either tree size diversity or height diversity is one-dimensional information entropy measure. This paper discussed the method of multiple-dimensional information entropy measure with the concept of joint entropy. It is suggested that joint entropy is a good measure for describing overall stand structural diversity.     

The Existence of the Nontrivial Solutions to a Class of Quasilinear Elliptic Equations Involving Supercritical Exponents

under the assumptions that (r)=O(rb)as r and*相似文献   

Variational Method of Network Structure of Linear Hardening Materials

This paper developed out coordinate equations and equation of strain energy for suspensionand network structure made of linear hardening materials.Then displacements and horizontal forces ofthe network are determined by principle of minimum potential energy.     

弹性薄板大挠度问题两类变量的广义变分原理

应用变积方法,按照广义力和广义位移之间的对应关系,将弹性薄板大挠度问题的平衡方程和几何方程乘上相应的虚量,然后积分,代数相加,代入本构关系,建立弹性薄板大挠度问题两类变量的广义势能原理。通过代入另一类本构关系,再应用类似如上的方法,建立弹性薄板大挠度问题两类变量的广义余能原理。再将这两种两类变量的广义变分原理分别退化到弹性薄板大挠度问题的势能原理和余能原理。