一类非线性系统的自适应模糊滑模控制

针对一类不确定非线性系统提出了一种自适应模糊控制方法。该方法用模糊逻辑系统(FLS)逼近理想控制器；用滑模补偿控制器(SMCC)全局补偿逼近误差和系统的不确定性并消除外部干扰的影响，能够保证闭环系统全局渐近稳定，跟踪误差收敛到原点的邻域内。在闭环系统的稳定性分析中取消了文[1-4]中要求的逼近误差平方可积的条件。     

论《型世言》对话本体制的突破

《三言》、《二拍》将话本体制进一步固定，《型世言》与《三言》、《二拍》几为同一时期的拟话本集，但在体制上却没有固守原有的话本体制，而是进行了大胆的突破。这些突破较早地代表了明末尤其是清初以后的拟话本体制发展趋势，在拟话本发展史上具有一 定的意义。本文在指出突破的同时，也分析了造成这些突破的各种原因。     

论"日子"的成词——兼谈顾炎武《日知录》中的一处失误

在分析"子"的"时"的含义的基础上,对《日知录》中的一处看法提出了商榷意见;并在汉语历时词汇学的启发下,分析认为:现代汉语的"日子"乃历时上并列短语"日子"通过词汇化降格而来."日子"词汇化的环境和条件为:"日子"作为短语和词之间具有衍生关系,魏晋以降词缀"子"的成熟以及"词根 子(词缀)"这一强势结构对相关词的类化作用;结果:"日子"至宋代就完成了由短语至词的降格,具备了现代汉语"日子"的结构、意义及用法,从而也使人误以为"日子"在历时层面上就是附加式构词.     

In quest of the functional architecture of the developing mind: The Aristotelian project

This paper summarizes a theory of cognitive development that argues that the mind develops across three fronts. The first refers to a general processing system that defines the general potentials of mind to develop cognitive strategies and skills. The second refers to a hypercognitive system that governs self-understanding and self-regulation. The third involves a set of specialized structural systems which are responsible for the representation and processing of different reality domains. There are specific forces which are responsible for this organization of mind. These are expressed in the paper in terms of a set of five organizational principles. The developmental course of the major systems is outlined. Developmental change is ascribed by the theory to the interaction between the various systems. Different types of development require different change mechanisms. Several studies are outlined in the paper which provide empirical support to each of these propositions. The theoretical and educational implications of this project are discussed in the concluding section of the paper.     

《广艳异编》的成书时间及其与《续艳异编》的关系

《广艳异编》是明·吴大震编选的一部重要小说选本。根据发现的资料,现在可以证明《广艳异编》约编刊于公元1604～1607年间,成书时间早于《续艳异编》,其选文基本上忠实于原文。通过《续艳异缟》与《广艳异编》在篇目的归类和正文选录方式的对比,可以进一步证明《续艳异编》是《广艳异编》的精选本,是选本的选本。     

关于双积分系统时间最优控制中最优时间的计算方法的推导过程

本讨论了利用极小值原理设计的双积分系统的时间最优控制的控制曲线和开关曲线，着重讨论了该系统在最优控制下最优时间的计算方法的推导过程。     

流水步距定义问题的分析

在建筑工程专业的《建筑施工组织》教材中,关于流水步距的定义存在不严密、不统一、不科学等问题,文章对流水步距的定义进行了比较深入、全面地分析和论证,并给出了流水步距比较严密、比较科学的定义。     

Delay-dependent robust<Emphasis Type="Italic">H</Emphasis><Subscript>∞</Subscript> control for a class of uncertain switched systems with time delay

For linear switched system with both parameter uncertainties and time delay, a delay-dependent sufficient condition for the existence of a new robustH _∞ feedback controller was formulated in nonlinear matrix inequalities solvable by an LMI-based iterative algorithm. Compared with the conventional state-feedback controller, the proposed controller can achieve better robust control performance since the delayed state is utilized as additional feedback information and the parameters of the proposed controllers are changed synchronously with the dynamical characteristic of the system. This design method was also extended to the case where only delayed state is available for the controller. The example of balancing an inverted pendulum on a cart demonstrates the effectiveness and applicability of the proposed design methods. Project (No. 2002CB312200) supported by the National Basic Research Program (973) of China     

在多重视角中展现生存困惑与思考--池莉小说叙事的复调现象

本文运用巴赫金的复调理论来探讨和研究池莉小说的叙事艺术，分析池莉小说中叙事声音、叙事视角、叙事时间的复调手法，并努力探讨促使池莉运用复调叙事手法的原因，以此来透视池莉小说作品的艺术独特性及作家通过小说传达出来的生存困惑与思考。     

要留给学生思考与探索的时间

本文通过中外中学教育的对比,认为中国中学生用于学习的时间远比欧美同龄中学生多得多,但恰恰是过多的学习时间、过重的学习负担扼杀了中国中学生的创新能力。作者建议借鉴北欧国家的分级教学法,减轻学生的学习时间与学习负担,使中国中学生能有更多时间用于探索和思考,培养自己的兴趣特长,以提高中国中学生的创新能力。