某些整数距离图的染色

整数距离图是这样一类图G(Z，D)，其中，V(G)=Z，两点u，v之间存在一条边，当且仅当|u-v|∈D，这里D是由自然数组成的一个集合．利用组合数学中的一个相关定理和距离图染色中我们已知的一些结论，通过几种周期染色组合的方法，本确定了|D|=4且D中包含{2，3}和|D|=5且包含{2，3，5}时某些距离图G(Z，D)的点色数x(D)．     

三角债清理的图论模型分析

三角债是我国当前经济领域中存在的一个突出问题。文章建立了三角债的图论模型,并证明了任一债务网络皆可转换为最小债务网络,从而简化了三角债清理工作。     

长球波函数外推法及其应用-(Ⅰ)

用求积分方程特征值方法求出长球波函数 ,再进行外推 ,重建出由于缺角度而引起数据不完全时的图象 ,避开了反演中的求Radon反变换问题 .通过模型验证 ,在角度缺少较大的情况下所建立的算法在效率、精度、稳定性等方面都有较好结果     

Competence-based blended learning in building automation: towards a EU curriculum in ‘Domotica’

A competence-based approach was applied to a blended learning on line distance training in the Euroinno EU project aimed at vocational training in building automation. The current paper describes the experience gathered during the learning process and the definition of the curriculum. A number of issues emerged during the sessions concerning regional differences among the various European partners involved in the learning. Refusal to accept e-learning approaches has been considerable among teachers and students in piloting building automation courses, and mainly related to four factors in the tradition of adult education: curriculum tradition, oral tradition, lack of confidence in technical solutions to educational matters and lack of experience with the media.     

连通图的关联矩阵的积和式的计值方法

在文[1]的基础上以积和式的laplace展开定理为依据，对p阶连通图的关联矩阵B的大子阵进行分类讨论，给出了perB的计值方法。     

N阶k正则图的递归生成

研究了任意N阶k正则简单图的生成法则,提出了由简单完全图递归生成任意N阶k正则图的方法．     

关于运动解剖学的几个基本概念

力和力矩是两个不同的概念，应加以区别使用；肌肉工作时定点的确定要以躯体支撑点为基本参考点，肌肉做静力性工作时是双固定状态；肌肉拉力线应用射线来标示；要根据具体情况作具体分析，不能简单地以动点向定点的连线标示，影响肌肉最大力量的解剖学因素是该肌肉内可能形成的最大横桥数目和肌肉收缩时的初长度，神经调节、肌拉力角、肌收缩矩均不是影响肌肉最大比力的解剖学因素．     

完全图的边带宽的另一证明

图G的边的一个标号f是指边集E（G）到自然数的子集的一个一一映射。图G的边带宽为B’（G）=minB＇f（G）,B＇f（G）是G的所有邻边的标号f的差的绝对值的最大者。本文确定完全图Kn的边带宽：当n=3,4时，B＇（Kn）=2n-4；当n≥5时，B＇（Kn）=n（n-5）/2＋7。     

Yangxueqingnao particles inhibit rat vascular smooth muscle cell proliferation induced by lysophosphatidic acid

Objective: To observe the effect of Yangxueqingnao particles on rat vascular smooth muscle cell (VSMC) proliferation induced by lysophosphatidic acid (LPA). Methods: The amount of3H-TdR (3H-thymidine) admixed in cultured rat VSMC was measured and mitogen-activated protein kinase (MAPK) activity and lipid peroxidation end product malondialdehyde (MDA)content of the VSMC were assayed. Results: 1×10-9, 1×10-8, 1×10-7 mol/L LPA in a concentration dependent manner, induced the amount of 3H-TdR admixed, MAP kinase activity, and MDA content of the cultured rat VSMC to increase. However, 5%, 10%,and 15% Yangxueqingnao serum preincubation resulted in a decrease of 23.0%, 42.0%, and 52.0% (P＜0.01) respectively in the amount of 3H-TdR admixed, a decline in VSMC MAP kinase activity of 13.9% (P＜0.05), 29.6% (P＜0.01), and 48.9% (P＜0.01)respectively, and also, a decrease in MDA content of VSMC of 19.4%, 24.7%, and 43.2% (P＜0.01) respectively, in the 1×10-7mol/L LPA-treated VSMC. Conclusions: LPA activates the proliferation and lipid peroxidation of VSMC in a concentration dependent manner. The LPA-induced VSMC proliferation is related to the activity of MAP kinases, enzymes involved in an intracellular signalling pathway. The results of the present study showed that Yangxueqingnao particles can effectively inhibit LPA-induced VSMC proliferation, MAP kinase activation, and reduce lipid peroxidative lesion.     

迷宫问题的图论解法探讨

迷宫问题是《数据结构》中是作为栈的典型应用举例，且迷宫是以二维数组来存储的，表面上看似乎迷宫问题是一种特殊问题的解决方法，其实迷宫问题是一种特殊形式的图的问题。因此，迷宫问题总是可以转化为图的问题来解决的。讨论如何将迷宫问题转化成图的问题，以及如何利用图的算法来解决迷宫问题。