PATHS BETWEEN TWO VERTICES IN A TREE GRAPH

Let T(G)be the tree graph of a simple graph G.It is proved that ifT and T′are two vertices of T(G)such that d_T(G)(T)(?)d_T(G}(T′),then there ared_T(G)(T) internally disjoint paths in T(G) joining T and T′.     

Five-point Element Scheme of Finite Analytic Method for Unsteady Groundwater Flow

The finite analytic method is a new valuablecomputational method proposed by C.J.Chen atthe beginning of the1980’s,with which moreideal result could be obtained in solvinghydrokinetics equation[1,2].The finite analyticmethod is also applied in groundwate…     

Adaptive synchronization of neural networks with different attractors

This paper aims to present an adaptive control scheme for the synchronization of two classes of uncertain neural networks with different attractors. A new sufficient condition for the global synchronization of two kinds of neural networks with different attractors is derived. The proposed control method is efficient and easy to be implemented. Numerical simulation is used to show the effectiveness of the obtained result.     

仔猪何时断奶最适宜？

仔猪继奶时间关系到母猪的年产仔窝数和育活仔猪头数，在生产实践中，可根据以下几方面来判断仔猪是否适合继奶。 1、仔猪生长发育必须良好。生长发育良好的仔猪，3周龄时体重应不低于5公斤，4周龄时不低于6公斤，     

吸积致密双星

本书是1989年10月在美国新墨西哥州三塔菲举办的“第11次北美灾变和低质量X射线双星的会议”的报告文集。内容丰富，覆盖了低质量中子星和黑洞、双星的观测和理论、磁和非磁白矮星双星、瞬时X射线源、新星和双脉冲星。     

How to express tumours using membrane systems

In this paper we discuss the potential usefulness of membrane systems as tools for modelling tumours. The approach is followed both from a macroscopic and a microscopic point of view. In the first case, one considers the tumour as a growing mass of cells, focusing on its external shape. In the second case, one descends to the microscopic level, studying molecular signalling pathways that are crucial to determine if a cell is cancerous or not. In each of these approaches we work with appropriate variants of membrane systems.     

内流——概念和应用

本书论述在推进系统、流体机械（压缩器、涡轮和泵）和管道（雾化器、喷嘴和燃烧室）中所碰到的内流的分析和性能，用技术应用的例子来说明理论的要点。     

A Distorted Image of Confucius ——on Lin Yutang′s Version of Lunyu(论语)

ＡｍｏｎｇｍｏｄｅｒｎＣｈｉｎｅｓｅｗｒｉｔｅｒｓ，ＧｕＨｏｎｇｍｉｎｇ（辜鸿铭）ａｎｄＬｉｎＹｕｔａｎｇ（林语堂）ａｒｅｔｈｅｔｗｏｍｏｓｔｐｒｏｌｉｆｉｃｔｒａｎｓｌａｔｏｒｓｏｆＣｈｉｎｅｓｅｌｉｔｅｒａｔｕｒｅ．ＧｕＨｏｎｇｍｉｎｇ，ｔｈｅｗｒｉｔｅｒｏｆＱｉｎｇＤｙｎａｓｔｙ，ｈａｓａｌｍｏｓｔｂｅｅｎｆｏｒｇｏｔｔｅｎｂｙｏｒｄｉｎａｒｙＣｈｉｎｅｓｅｒｅａｄｅｒｓａｔＰｒｅｓｅｎｔ；ｗｈｉｌｅＬｉｎＹｕｔａｎｇｉｓｅｖｅｒｆｒｅｓｈａｎｄｎｅｗｔｏｐｌｅｎｔｙｏｆｒｅａｄｅｒｓ—…     

铜川矿区5#

铜川矿区