通货膨胀目标制在我国适用性研究现状

通货膨胀目标制作为近年来广受关注的一种货币政策,在许多国家得到应用并取得了不错的效果。国内学者对这一制度最初的研究集中于对其初步介绍、我国是否满足其适用性条件等方面,最近几年则开始转向具体实施会遇到的困难、该制度的实施效果等更加具体实用的方向。这对我国下一步进行货币政策和汇率政策改革都有一定的借鉴意义。     

《地外文明探秘:寻觅人类的太空之友》

上海科技教育出版社,哲人石丛书,当代科普名著系,1999.12页数:200 定价:15.30元外星智慧生命存在的证据,不论它是如何发现的,都将是有史以来最大的消息……人类这条最重大的消息造成的震撼将会从根本上彻底动摇我们的世界及其社会。有关外星生命的胡言乱语如今是太多太多,轻信没有根据的谣言是对梦想的侮辱。英国科学作家迈克尔·怀特所著的《地外     

基于增量式贝叶斯分类器的故障诊断研究

本文针对贝叶斯分类器精度不高,需要大量样本集学习,尤其是当获得大量的带有类别标注的样本代价较高时的缺点,探讨了一种基于增量式贝叶斯分类器的故障诊断方法,使用该模型不断积累完善样本,自动修正网络结构参数和概率分布参数,从而达到诊断效果的高效性。也把该模型运用到变压器的故障诊断中,通过大量的实例证明,该模型运用的算法在现实工作中有实质的可行性和操作性。     

Robust H∞ control for uncertain stochastic saturating systems with time delays

The robust H∞ control problem for uncertain stochastic time-delay systems containing nonlinear actuators is considered. The uncertainties in the systems are assumed to satisfy specific match condition. The time delays exitst in state as well as control input. The new stochastic robust stabilization criterion and a sufficient condition for the existence of stochastic robust stabilizing control law are derived. The delay-independent memoryless robust H∞ controllers are constructed to stabilize the given systems in terms of a group of linear matrix inequalities. A numerical simulation example is presented to show that the proposed approach is valid.     

浅议扩大消费与改善民生

随着经济的发展,我国居民消费水平也在不断提高,居民生活水平也实现了质的飞跃,我国的民生也得到了很大程度上的改善。居民消费水平是影响民生的关键因素,因此,本文就主要针对消费与民生问题进行简单的探讨。     

乳化剂的复配对w/o/w型复乳稳定性影响的研究

研究了以液体石蜡作为油相,以Span85、Span80与Tween80复配作为亲脂性乳化剂,以Span80、Tween80复配作为亲水性乳化剂制备w/o/w复乳,不同的复配比例和乳化剂用量对复乳稳定性的影响.复乳的稳定性用黏度和离心分离实验评价.结果表明,Span80与Tween80相容性较好,适于复配作为复乳的乳化稳定剂,当它们以9∶1的质量比(Span80∶Tween80,)复配作为亲脂性乳化剂,以7∶3的质量比复配作为亲水性乳化剂所制得的复乳稳定性较好,其最适质量分数分别为亲脂性乳化剂在油相中的质量分数14%,亲水性乳化剂在外水相中的质量分数18%.     

Robust H∞ filter design for uncertain nonlinear discrete systems with state delay

In this paper, we address the problem of robust H∞ filter design for a class of nonlinear discrete-time systems with norm-bounded parameter uncertainty, unknown state delay, and unknown nonlinear disturbance. Firstly, the sufficient condition of the existence of the robust filter is analyzed by the modified Riccati inequalities, such that the filtering process remains robustly stable and a prescribed H∞ performance lever is achieved. Then the filter is characterized in the terms of positive solutions of two algebraic Riccati-like equations, irrespective of the uncertainties, time delays and nonlinearities. The simulation example further shows the validity and the applicability of the proposed approach.