图的最大度与（p,1）-全标号

图G的一个(p,1)全标号是与频道分配有关的一种染色,它是从V(G)UE(G)到一个整数集合的映射,且满足:1)图G的任意两个相邻的顶点得到不同的整数;2)图G的任意两个相邻的边得到不同的整数;3)图G的任意一个顶点和它所关联的边得到的整数必须至少相差P.一个(p,1)一全标号的跨度是指最大标号数与最小标号数的差.图G的所有(P,1)-全标号函数中最小的跨度,称为图G的(p,1)-全标号数,记为λTP(G).本文我们证明了对任意的图G,其最大度△是偶的且至少是10,则λT2≤2△-1.另外对于任意的简单连通图G,其最大度为△,如果G的最大度点的邻点中至多有△-1个最大度点,则λTP(G)≤p+4.     

我国高校学籍管理制度改革研究

文章提出并深入分析我国高校现行学籍管理制度存在的问题,在探讨树立新的学籍管理观念的基础上.进一步提出我国高校学籍管理制度改革的策略:①保证高校学籍管理制度的科学性,②促进学籍管理制度执行程序的合法化,③改进学籍管理运行机制,④加强学籍管理队伍建设.     

Recent progresses of late-transition metal complexes with nonsymmetric diimine ligands in ethylene polymerization and oligomerization

Researches of late-transition metal complexes for ethylene polymerization and oligomerization have attracted a lot of attention in the last two decades. A large number of late-transition metal complexes with symmetric diimine ligands have been extensively studied. Although the research of unsymmetric diimine late-transition metal complexes was still in the initial stage, some superior performances were observed in olefin polymerization. Recent developments in the research of ethylene poly- merization and oligomerization catalyzed by late-transition metal complexes with unsymmetric diimine ligands were summarized in this review, with the influence of complex structure on the catalytic performance of the catalyst analyzed.     

Fuzzy线性规划最优解新探

本文首先研究了参数规划 ( Lλ)的最优值与参数λ之间的线性关系 .接着说明在适当条件下 ,模糊线性规划的最优解在 λ=0 .5处取得 .如果不满足这一条件 ,则有模糊判决 λ>0 .5 .最后给出了模糊线性规划的一个算法     

H_2/H_∞ Control for Stochastic Jump-Diffusion Systems with Markovian Switching

In this paper, a stochastic H_2/H_∞ control problem is investigated for Poisson jumpdiffusion systems with Markovian switching, which are driven by a Brownian motion and a Poisson random measure with the system parameters modulated by a continuous-time finite-state Markov chain.A stochastic jump bounded real lemma is proved, which reveals that the norm of the perturbation operator below a given threshold is equivalent to the existence of a global solution to a parameterized system of Riccati type differential equations. This result enables the authors to obtain sufficient and necessary conditions for the existence of H_2/H_∞ control in terms of two sets of interconnected systems of Riccati type differential equations.     

知识共享对战略联盟绩效影响的研究

研究采用文献分析法和问卷调查法,分析知识共享对战略联盟绩效的影响。通过归纳总结大量国内外文献,建立知识共享对战略联盟绩效影响模型,并在欧盟50家制造企业中进行了问卷调查。应用SPSS软件对数据进行了信度效度分析,并通过相关分析和回归分析对假设进行检验。回归分析的结果表明:自变量联盟之间的信任、知识共享隐含性和知识相关性对联盟绩效有重大影响;控制变量中学习和联盟经验对联盟绩效有影响。     

变系数Zakharov-Kuznetsov方程的三层线性隐式差分格式

利用有限差分法逼近变系数广义ZK(Zakharov-Kuznetsov)方程的初边值问题,建构一个三层线性化隐式差分格式.利用离散能量估计方法,讨论差分格式解的唯一性以及x方向的一阶差商在L∞模意义下的收敛性、稳定性和收敛阶数,并通过数值算例验证理论分析的结果.