刚性

For composite foundation with compressible piles, based on displacement harmony condition, and combining with load transfer method and approximate solution of differential equation, analysis methods of linear and nonlinear interaction between piles and surrounding soil were suggested.

对柔性桩复合地基，是基于位移协调条件，并结合荷载传递法与微分方程的近似解法——子域法，提出了变截面自由单桩与地基土、刚性承台下柔性单桩和变截面柔性单桩与地基土、刚性承台下柔性群桩与地基土线性及非线性相互作用的分析方法，并得到有效桩长、桩与基土的荷载分配及刚性承台下各桩桩项荷载分配、荷载—沉降关系、荷载传递规律等有意义的结果。

For composite foundation with compressible piles, based on displacement harmony condition, and combining with load transfer method and approximate solution of differential equation, analysis methods of linear and nonlinear interaction between piles and surrounding soil were suggested. A lot of significative results, for example availability pile length, load distribution between piles and surrounding soil, load distribution among all piles under rigidity pile-cap, load-settlement relation etc, were obtained.

对柔性桩复合地基，是基于位移协调条件，并结合荷载传递法与微分方程的近似解法—子域法，提出了变截面自由单桩与地基土、刚性承台下柔性单桩和变截面柔性单桩与地基土、刚性承台下柔性群桩与地基土线性及非线性相互作用的分析方法，并得到有效桩长、桩与基土的荷载分配及刚性承台下各桩桩顶荷载分配、荷载一沉降关系、荷载传递规律等有意义的结果。

The problem of a curved rigid line or crack crossing the interface of the circular inclusion are studied by the principal part analysis method of Cauchy type integral equation. The singular stress index at the intersection and the singular stress at the angular regions near the intersection are obtained. The singular stress coefficients of rigid line at intersection and the stress intensity factors of crack at intersection are defined by using the singular stress.

利用Cauchy型奇异积分方程的主部分析方法对曲线型刚性线和曲线裂纹和圆夹杂界面的相交问题进行了研究，得出刚性线以及裂纹和界面交点处的奇性应力指数以及交点处角形域内的奇性应力，并利用奇性应力分别定义了刚性线在交点处的应力奇异因子和裂纹在交点处的应力强度因子。

The touch condition of the first and second interlayer have greater influence to the tension stress of the bottom layer.The first interlayer has fatefully influence to the shear stress, while the touch condition of the third interlayer affects the compression strain of the top of ground.

基于以上考虑，面层与半刚性基层、高强度的半刚性基层与低强度半刚性底基层、底基层与土基的3个接触面是半刚性路面结构的最薄弱的地方，分别定义为第一、第二、第三接触面。

Finally, based on the fundamental solutions of Biots consolidation of transversely isotropic saturated multi-layered soils, the Fredholm integral equation of second kind for the interaction between transversely isotropic saturated multi-layered soils and rectangular piles is established, the relevant numerical analysis is also carried out.

最后，基于横观各向同性层状饱和地基Biot固结问题的基本解答，建立了横观各向同性层状饱和地基与方形单桩、群桩共同作用问题的第二类Fredholm积分方程，并进行了数值分析与计算；通过将矩形刚性基础基底划分成若干个大小相等的矩形网格，用矩形均布荷载表示网格的基底反力，并利用已获得的横观各向同性层状饱和地基Biot固结问题的基本解来求解每个矩形网格的柔度系数，然后根据刚性基础与层状饱和地基的接触条件和其本身的静力平衡条件，求解分析了横观各向同性层状饱和地基与刚性矩形板的共同作用问题。

Dahlquist,Butcher,Burrage and Frank et.al.established early or late B-theory of Runge-Kutta methodsfor stiff problems in Euclidean space with finite dimensions.Afterward,Shoufu Li et.al.extended this theory to general linear methods and stiff problems in Hilbert space andfurther established B-theory of general multivalue methods in Banach space.

Dahlquist、Butcher、Burrage及Frank等人先后建立了有限维空间中刚性问题Runge-Kutta方法的B-理论；李寿佛等人将该理论推广到一般多值方法和Hilbert空间中的刚性问题，进而建立了Banach空间中刚性问题一般多值方法的B-理论。

There are different levels of rigidity, which gradation is the urban residents passive sexual demand, the house demand for a new married couple and the melioration demand.

在刚性需求内部具有不同级别的"刚性"，刚性渐减的顺序是货币化的拆迁性需求、婚房需求、改善型需求。

A non-stiff transformation method is presented in this paper, based on the above theory, general Schur product multistep method is put forward.

本文讨论了刚性常微方程的非刚性转化方法，在此基础上，获得一类广义Schur积多步法（通过这种非刚性转化方式，显式Euler方法将成为一个A-稳定的方法）。

Related concepts, methods and the up-to-the-date situation are briefly reviewed at first. Then, thorough research is conducted to feature based rigid registration, image content based rigid image registration, and nonrigid image registration respectively.

首先对医学图像配准的有关概念、方法及其研究现状进行了综述，然后分别深入研究了基于图像几何特征的刚性配准、基于图像灰度的刚性配准和图像的非刚性配准等问题。

The shared resource not only has significant positive impact on the competitive advantages of the firm in the cluster, but also has indirect negative impact on the competitive advantages of firms in cluster. The mechanism of the shared resource acting on the competitive advantages of the firm in the cluster is complicated.4 The rigidity of shared resource can be reified to different kinds of rigidities, and different kinds of rigidities have different modes of effecting on the competitive advantages of firms in cluster.

共享性资源对集群企业竞争优势不仅具有正向作用，还可以通过共享性资源刚性对集群企业竞争优势产生负向作用，因此，集群企业竞争优势水平是共享性资源对其多种路径共同作用的结果；(4)共享性资源刚性可以分解出各种不同类别的具体刚性要素，不同的刚性要素对集群企业竞争优势产生作用的路径不同。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。