充分条件

The fragility of banking system is the predetermining condition of banking crises.

银行体系脆弱性是银行业危机爆发的必要非充分条件。

Modeling and stability analysis problem of linear switched system are emphasized in this part and main results include:(1) Through investigation in the projection of 〓 on x, where x denotes continuous state vector, a series of sufficient conditions for stability, asymptotic stability and unstability of linear switched system's equilibrium in the sense of Lyapunov are achieved. And also, a sufficient and necessary condition for state bounded stability of linear switched system is received.(2) For a class of periodical linear switched system whose switching sets are a group of ordinal lines starting from the original point, it's proved that state bounded stability can be defined by the running characteristic in a single period (3) Based on linear switched system, the concept of linear switched system network is put forward. Linear switched system network is a complex network interconnected by many linear switched systems.

这部分着重研究线性切换系统的建模与稳定性分析问题，主要成果包括：（1）通过考察〓在x上的投影，得到线性切换系统的平衡点在Lyapunov意义下稳定、渐近稳定及不稳定的一系列充分条件，并得到了线性切换系统状态有界稳定的一个充要条件；（2）证明了对于一类切换集为从原点出发的一组射线的周期线性切换系统，其状态有界稳定可根据一个周期内的系统运行特性来判定；（3）在线性切换系统的基础上提出了线性切换系统网络的概念，线性切换系统网络是由多个线性切换系统交互作用而形成的复杂网络。

For general periodic functional differential equations,the suffcient conditions for the existence of periodic solution are obtained,therefore,the existence of positive periodic solution to the chemostat model is verified.

对一般的周期泛函数微分方程，导出了周期解存在的充分条件，并由此获得了微生物培养模型正周期的存在性。

By using the methods given in this dissertation, stabilization of stochastic neural networks with diffusions and delays is studied. Some sufficient conditions are given to guarantee the exponential stability and stabilization of the neural networks.

运用本文研究随机反应扩散系统稳定性的方法，分析了具扩散项的随机神经网络以及对应的滞后神经网络的解的镇定性，获得了该类神经网络指数稳定与镇定的若干充分条件。

As I argued last week, I am hopeful that Franco-German relations are likely to improve, a necessary but not sufficient condition for better governance at EU level.

正如我上周所说，我满怀希望地认为，法德之间的关系有可能改善--这是欧盟层面完善治理的必要非充分条件。

Several kinds of new convexity are introduced with Gateaux derivatives as an aid, under the assumption of which optimality sufficient conditions are obtained.

借助Gateaux导数引进了几种新的凸性，在新的凸性假设下得到了最优性充分条件。

Misaligned incentives were not sufficient to do it and not necessary either.

不当的激励机制既不是危机发生的充分条件，也不是其必要条件。

In the second section, the sufficient conditions of the global asymptotic stability and uniqueness of periodic solutions are obtained for n-dimensional model.

第二节讨论了均有HolingⅡ型功能反应且具有周期系数的顺环模型，得到了该系统存在唯一全局渐近稳定周期解的充分条件。

Sufficient conditions for quasi-hereditary Nakayama algebras and for quasi- hereditary left serial algebras to have global dimension equal to 2 or 3 are obtained.

本文分别给出了拟遗传Nakayama代数和拟遗传左serial代数的整体维数等于2或3的充分条件。

It indicates that the steel enterprise should be reformed and developed through product modification and product structure adjustment in order to upgrade products and increase competitive power in markets and therefore to rise to the challenge from WTO and steel markets globalized;the super large? sized steel trust should be constructed though stock ownership reorganization linked by capital so as to resist incursion of the steel magnate at abroad and rejuvenat.e national steel indutry; the mind should be emancipated, the concept should be changed , the power for the enterprise reforms should be enhanced, especially to reform management and administration systems to create sufficint and essential conditions for the enterprise rejuvenation and development.

本文认为，钢铁企业的改革和发展，应该以产品改造和产品结构调整为突破口，迎接WTO和全球化钢铁大市场的挑战，培育钢铁企业的产品升级能力和市场竞争能力；以资本为纽带，通过股份制改组，构建超大型的钢铁托拉斯，抵御国外钢铁巨头的入侵，振兴民族钢铁工业；解放思想，转变观念，加大国有大中型钢铁企业的改革力度，特别是要改革企业内部的经营机制和管理机制，创造企业振兴与发展的充分条件和必要条件。

She gently rebuff ed him, but agreed that they could be friends

她婉言拒绝了，但同意作为朋友相处。

If in the penal farm, you were sure to be criticized.

要是在劳改农场，你等着挨绳子吧！