学习

In this paper, we discuss the learning control for nonlinear discrete system with delay. It is not necessary to use the desired input corresponding to the desired output and the desired state corresponding to the system in our learning algorithm and in the process of learning control. Therefore, our method needs less dynamics information of the controlled object than previous ones and only the qualitative Lipschitz condition is required.

摘 要：讨论了滞后非线性离散系统的学习控制问题，由于所给的学习算法及学习控制过程中，没有涉及和用到相应于理想输出yd的理想输入ud及对应于系统的理想状态xd，故对被控对象的动力学信息要求得很少，只是一种定性上的Lipschitz条件。

To the discrete-time systems, we introduce a new discrete-time norm, the algorithm given is not depend upon the initial data. For a class of uncertain discrete-time systems, we also adopt the method of iterative learning control, we convert the problem of learning control into a global stability of trivial solution for lower triangular matrix dynamic systems, and obtain the result of tracking to desired state of the system.

对于一般非线性离散系统，引进了离散的范数，所给的算法不依赖于学习控制算法中的初始数据，对于一类不确定离散系统的状态跟踪问题，我们也采用迭代学习控制的方法，将相应的学习控制问题转化为一个下三角动力系统的平凡解全局稳定性问题，获得了对系统理想状态的跟踪结果，并对所给的算法的收敛性进行了分析。

And who, on the other hand, would think of making only the diversion-craving luxuriousness of those Florentine circles and the vanity of their dramatic singers responsible for the love of the opera which spread with such rapidity?

同时，我们也会感觉到：好象悲剧时代的诞生不过表示德国精神之返回自己，在强大入侵势力长期间强迫它奴役于其治下，过着绝望的野蛮生活之源泉，它敢于在所有民族面前高视阔步，无须罗马文明牵着它学步了，只要它能够坚定地学习一个民族，学习古希腊人——向希腊人学习毕竟是一种高尚的光荣和出众的优越。

This article provided by the machine learning, word learning, hearing test simulation and electronic books in four learning tools, will allow you to quickly improve the level of foreign language proficiency.

本机器提供的文章学习、单词学习、听力测试模拟和电子图书的四种学习手段，将使您的外语水平快速提高。

Therefore, traditional teaching should be reformed, because i think that mathematics teaching should be one kind of magistral learning method based on independently exploring, discussing and solving problems, should make students explore, learn in the exploration and develop in their learning and finding the happiness in developing through establishing one kind of democratic, harmonious and rising teaching course and mode.

为此，传统的教学应该进行改革，我认为数学教学应该将活动中自主探索、讨论、解决问题成为学生的主导性学习方式，通过建立一种民主、和谐、新兴的教学过程和模式，让学生在活动中探究，在探究中学习，学习中发展，发展中得到快乐。

Division or class in a complete system or grouping 种类challenge v. question the lawfulness or rightness of 对…表示异议,怀疑compensate v. give sth. to make up 弥补confine v. rest

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The paper first presents an objective model of task scheduling,and then based on the analysis of Q learning algorithm,the Markov decision process description of the scheduling problem is given.

首先建立任务调度问题的目标模型，在分析 Q学习算法的基础上，给出调度问题的马尔可夫决策过程描述；针对任务调度的 Q学习算法更新速度慢的问题，提出一种基于多步信息更新值函数的多步 Q学习调度算法。

China has implemented new courses in a few years, the study of middle school teachers teaching and students studying math on the investigation at this stage Instructional Design Research expounded on the need from classroom teaching and learning theories analysis, to find guidance in the design of classroom teaching under the new curriculum theory and classroom teaching on the design analysis of the whole process; From the typical class (class mathematical concepts and mathematical theory classes and study complicated math classes, the study of mathematics learning courses, open learning mathematics classes, cooperative learning math lessons) teaching the practice of design study, initial design, this is my classroom teaching design in recent years the practice of summary, the results of this study reflect.

新课程在我国已实施好几年了，本研究通过对初中教师与学生数学教学情况的调查，阐述研究现阶段课堂教学设计的必要性；从课堂教学理论、学习理论的分析中，寻找指导新课程下课堂教学设计的理论，并就课堂教学设计的全过程进行剖析；从几种典型课(数学概念课、数学原理课、数学复习课、数学研究性学习课、数学开放探究课、数学合作学习课)的课堂教学设计的实践研究中，提出初步的设计思路，这既是本人近年来课堂教学设计的实践总结，也是本研究的成果体现。

The second is low cognitive processing ability that comprises mental arithmetic level and efficiency, space image level and efficiency.

规则中心图式和综合图式在不干扰优等生和中等生学习的前提下，能显著提高学习困难生的学习成绩。

This kind of learning modality can be traced to the medical education in America in the middle of 1950s.

接着，论述了在基于问题的学习中运用信息技术的必要性，并介绍了基于问题的学习中所运用到的具体信息技术种类，由此，把信息技术与基于问题学习整合起来。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。