二阶非线性常微分方程解的渐近性

利用推广的Ou-Iang型积分不等式 ,得到了一类二阶非线性常微分方程的解的渐近性     

n个无关变元的欧阳型离散不等式

文章建立了新的关于n个无关变元的Ou-Iang型离散不等式,所得结果不仅推广和改进了已有的相关结果,并在研究差分方程解的稳定性理论上起着重要作用.     

加单权Poincare型不等式

利用权得到了Poincare型积分不等式的推广：加权Poincare型积分不等式。这个不等式是经典结果的推广,它可被用来研究积分性质和用来做积分值的估计。     

关于几类新的积分不等式

在本文中,我们首先给出一类非线性的Gronwall—Bellman型积分不等式.然后,我们又给出Bihar型积分不等式的某些推广,并在此基础上进一步推广了所谓的Ou—lang型积分不等式.     

关于广义i阶宽度积分的逆Brunn-Minkowski型不等式

研究广义i阶宽度积分,利用逆的H?lder 不等式给出广义i阶宽度积分的 Brunn-Minkowski型不等式和Beckenbach-Dresher’s型不等式,同时给出广义弦长积分的类似结论.     

一个加权的Kantorovich不等式及其应用

在研究离散型和积分型Kantorovich不等式的基础上,通过归纳类比的方法,得到了新的Kantorovich不等式的加权推广积分形式,并运用构造性方法给出了一种简洁有趣的证明.又进一步从新的Kantorovich加权积分不等式推出了Pólya-Szeg加权积分不等式,最后指出了Kantorovich加权积分不等式与Buniakowski-Cauchy-Schwarz加权积分不等式的关系,以彰显其内在规律性和应用性.     

时间尺度上含有两个变量的Volterra-Fredholm型动力积分不等式

研究了一类时间尺度上含有两个变量的Volterra-Fredholm型动力积分不等式,给出了动态积分不等式的有界性估计,这些有界性估计可作为研究某些动力积分不等式的有效工具。     

一个新的积分不等式及其应用

从离散型W．H．Young不等式出发，以归纳类比和分类讨论思想为基础，得到了一个新的积分不等式，并运用构造性方法给出了一种十分简洁的证明，又进一步讨论了新的积分不等式与P．Schweitzer反向积分不等式的关系，同时指出了由新的积分不等式能够得到Hoelder积分不等式、Minkowski积分不等式及Buniakowski—Schwarz积分不等式等，凸显其内在规律性和应用的广泛性。     

Diaz-Metcalf不等式的推广及其应用

从离散型Diaz-Metcalf不等式出发，将其推广到相应的积分型不等式，并对积分型不等式的应用做了进一步的研究。     

一类非线性Volterra-Fredholm型积分不等式的推广

建立了一类非线性 Volterra-Fredholm 型积分不等式解的估计, 所得结果推广了过去关于非线性 Volterra-Fredholm 型积分不等式的相关结果, 并用实例给出了解的估计.     

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!     

胡主席在印度,我却在中国

Today, Sunday morning, I sit thinking and typing at my computer. My thoughts are in my homeland, India and my body is in China. The body is here and mind there for a good reason. Mr. Hu is president and I am resident and both are in each other's countries (what a difference the absence of one small letter makes!). Mr. Hu will return in a few days and I will stay on longer.