环自同构的不动点

在环自同构中引入不动点的概念,并对环自同构不动点的性质,存在性等做了探究,得到了环自同构不动点的若干性质,及环自同构存在非零元不动点的若干等价条件,通过环自同构不动点对环的结构进行了刻画.     

Caristi不动点定理的迭代求解

Caristi不动点定理只给出了不动点的存在性,没有给出不动点的求解方法(即没有给出求不动点的迭代方法).本文在赋格距离空间中,在某些附加条件下,用迭代方法求出不动点.     

Banach不动点定理及其随机化

讨论了Banach不动点定理和随机化的Banach不动点定理,重点研究了不动点定理在Banach空间和概率空间的应用.     

2-距离空间中扩张映射的不动点定理

本文研究2-距离空间中几类扩张映射不动点的存在性和唯一性,讨论了其不动点集的结构,获得了几个新的不动点定理.     

一类非线性拟非扩张算子不动点问题

不动点理论是目前正在迅速发展的非线性泛函分析理论的重要组成部分,数学中各类算子不动点问题的研究与非线性方程理论密切相关。空间条件下非扩张算子不动点的问题可归结为寻找非线性函数方程解,也即是寻找一些给定的非线性映射的不动点.讨论了一类非线性拟非扩张算子的不动点的存在性,证明了已有结果都能用Mann方法构造出来,给出了一类更广的构造不动点的迭代过程.     

矩阵的零点、不动点与稳定点

将函数的零点、不动点与稳定点的概念推广到矩阵上,引入矩阵的零点、不动点与稳定点的概念,对矩阵零点、不动点与稳定点的性质进行了研究,并初步探讨了矩阵非零零点、非零不动点与非零稳定点的存在性,得到了若干结果.     

一类函数的几个特殊性质

在函数的零点定理和不动点定理的基础上,定义了函数的准不动点,并证明了一类函数有关零点和准不动点的几个性质.     

广义度量空间中映象的不动点定理及应用

本文讨论广义度量空间中映象的不动点的存在性,得到了一些新的不动点定理,作为应用,我们得到了概率度量空间中映象的一些不动点定理。     

收缩映射的不动点

建立了收缩映射的不动点定理，给出了完备度量空间中没有不动点的收缩映射的例子，并讨论了紧度量空间中收缩映射不动点的迭代逼近问题。     

模空间的若干不动点定理

不动点定理是泛函分析的重要研究方向之一。模空间理论的研究使得Banach不动点定理在模空间上得以推广。本文整理了几种情况下模空间上不动点的存在定理,并对模空间和赋范空间的关系进行讨论,最后提出模空间不动点定理的应用。     

卡思卡特城堡

It is worthy of noting that, whilst Crookston Castle witnessed the earlier and happier portion of Mary's variegated life,     

不同的吃喝玩乐

一、吃和喝吃苹果 eat an apple, 吃药 take medicine,吃糖 have some sweets,吃饭 have one's meals,吃馆子 dine out,吃惊 be surprised/     

漏洞百出的教育

Many college freshmen arrive woefully unprepared to do college work, and as disadvantaged populations continue to grow, the share of the American work force that has made it through college is expected to plummet. Many experts blame that educational failure not just on high schools but also on colleges. School & College, a special report by The Chronicle, looks at efforts to fix the system. What reforms would better prepare students for college? What should schools and colleges be doing differently? How should state and federal officials help?     

只要努力,不要后悔

There are numbers of crossroads on our long and unpredictable life journey where we totally have no idea about which direction to choose. No matter what our decision is, we should not turn back, but face the music and go ahead instead. I am this kind of girl who always does try without regretting, one example is how I dealt with my love.     

浅谈移民问题

Migration occurs behind a variety of reasons and has a great effect on the whole world. People may migrate in order to improve their economic situation, or in order to escape civil strife, persecution, and environmental disasters. The impact of migration is complex, bringing both benefits anddisadvantages. This paper briefly talks about the causes of migration, the allocation of benefits, and the ways in which individual countries and the international community deal with this important subject.     

Sister Carrie, an Adherent of Desires

Sister Carrie is one of the most controversial characters in American literature.Thought as a "fallen woman" firstly,she was defined as a "new woman" by some critics later. However, by digging into the motivaton behind the whole process of Carrie's "success", the relationship between Carrie and her creator (the author), the social conditions of then American, it can be found that Carrie has never been free-standing on her thought and she has never found her real-sdf even after becoming a famous actress. In a society dominated by mass consumerism Carrie is only an adherent of her own desires. She also is a representative of all those country girls flooded into cities, a symbol and a sacrifice of the urbanization of America in a time countryside was overcome by cities.     

Improvement of one-cycle controller by use of proportional integral differential controller

1.IntroductionOne-cyclecontrolmethod,whichwasproposedaboutonedecadeago[1],hasbecomeanattractivemethodinspecialfieldssuchaspowerfactorcorrection[2-6],switchingamplifiers[7,8],etc.Themainideaofthiscontrollerisbasedonintegrationofdiodevoltageinone-cycleandforcesittobeexactlyequaltothereferencevalue.Themainadvantageofthiscontrollerisitsrealtimeabilitytorejectthevariationofinputvoltage[1].Despitethisgreatability,ithasnogoodperformancesinrejectingofloaddisturbanceandfollowingreferencecommands.Espec…     

库克斯顿城堡

城堡, 是欧洲典型的建筑之一, 每个城堡都有一个美丽的传说或是一段历史。从本期开始, 我们将推出“城堡之旅”, 带各位读者去浏览、观赏欧洲各地的城堡, 开始一段文化与历史的旅途!     

The Reader Response Approach to Teaching of English Literature

During interview with English majors, it was found that a majority of students expressed disappointment with their experience of English literature classes. Students' dislike of learning English literature appears to be the major problem of teaching English literature in China. Reader response approach is a good way to solve this problem. In this paper, I explain the rationale behind the reader response approach, such as its origin, definition, features, assumptions, and strategies. Then I illustrate how reader response approach works as a teaching strategy by presenting several teaching models. At last I evaluate its usefuiness for teachers and present the advantages of reader response approach in Chinese context.