共查询到20条相似文献，搜索用时 46 毫秒
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文章主要研究了上半平面内正则函数的一类Hilbert边值问题。首先给出了上半平面内正则函数的一类新的Hilbert边值问题的提法,然后通过把Hilbert边值问题转化为Riemann边值问题的方法,得到了上半平面内正则函数的Hilbert边值问题的唯一解。 相似文献
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本文讨论平面上混合型二阶椭圆型方程组的一类边值问题。利用全纯函数的边值问题与数学物理方法,得到了此类边值问题的解的表示式。 相似文献
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孙肖丽 《洛阳工业高等专科学校学报》2010,20(1)
单调迭代技巧是解决周期边值问题和泛函边值问题的一类重要方法,其解决的关键在于建立相应的比较定理。建立了右端项为f(t,u(t),ut)的一类非共振脉冲泛函微分方程边值问题相应的比较定理,从而为解决相应边值问题解的存在性奠定基础。 相似文献
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李悦 《通化师范学院学报》2014,(12):34-36
文中讨论了一类抛物方程非齐次边值问题的解法,利用变量替换法将非齐次边值问题转化为齐次边值问题,运用Rothe方法证明了其解的存在唯一性。 相似文献
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介绍了一般形式二阶n维双曲型方程初边值问题解的能量估计、一般形式二阶n维抛物型方程初边值问题解的能量估计以及一般形式二阶n维椭圆型方程边值问题解的能量估计,探讨了能量估计在这几类方程的(初)边值问题的一些应用,并得出一些结论。 相似文献
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首先给出了一类有节点曲线上带平方根的Riemann边值问题,在此基础上给出了其中一种很重要的情况就是无穷直线上带平方根的Riemann边值问题,通过对未知函数的结构分析,将它们化为一般的边值问题,进一步又可将其化为经典的Riemann边值问题,从而得到问题的解. 相似文献
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首先给出了一类有节点曲线上带平方根的Riemann边值问题,在此基础上给出了其中一种很重要的情况就是无穷直线上带平方根的Riemann边值问题,通过对未知函数的结构分析,将它们化为一般的边值问题,进一步又可将其化为经典的Riemann边值问题,从而得到问题的解。 相似文献
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田冬梅 《喀什师范学院学报》2007,28(6):14-15,27
探讨了带次方根的边值问题在一条开口光滑弧线上的解,通过在开口弧线上对未知函数结构的分析,把带次方根的Riemann边值问题化为一般的Riemann边值问题,并给出了它的解和可解条件. 相似文献
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Wilfrid Bilodeau 《Interchange》1993,24(3):241-270
Résumé Cet essai évoque les contextes pédagogiques de l'écriture au-delà des formes d'écriture convenues en recherche, et questionne les usages scolaires de l'écriture. J'y suggère d'autres usages inspirés d'une approche qui inverse les rapports usuels entre communication et représentation, entre kinésis et mimésis. Cette approche vise une démystification du pouvoir de l'écriture à représenter le réel, à dominer la communication, et une promotion d'une écriture expressive et métaphorique, favorisant l'appropriation de cette technologie virtuellement libérante.Université Laval 相似文献
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Mother's Day--母亲节 Mother's Day falls on the second Sunday in May every year. This is the occasion we show appreciation to our mothers and to people who have worked so hard to take care of us. Today, I'm sharing thoughts from a friend about mother, love,and the study of English. When we were young students, a teacher touched our heart,and we all miss her very much on this special day in May. 相似文献
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邱崇丙 《唐山师范学院学报》2014,(1):21-23
汉字的六书,《说文》对“转注”一类,语焉不详。后世学者提及转注,也仅限于许慎所举出的例字。《汉字例说》一文,作者从转注的角度综合考虑,对部分现代常用字作了分析,跟传统的解释有所不同。希望能抛砖引玉,互相切磋,以推进学术研究。 相似文献
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Kate Lorenz 《海外英语》2007,(12):40-41
Whether your preferred destination is the executive suite or simply the nearest exit from your current position, don't let your job take you aimlessly down any path. In fact when it comes to career planning, don't think in terms of "jobs" at all, says corporate transitions expert William Bridges, Ph.D. Instead he suggests building your career plan on "doing the work you're best at for the employers who need it." 相似文献
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Rachel Zupek 《海外英语》2007,(11):40-41
我们绝大部分人都同意一件事情——我们喜欢金钱。但是你对金钱的喜欢之情足够到让你创立一份事业么?.财富通常被人忽视,主要在于人们不能真正了 相似文献
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YANGShiguo 《重庆大学学报(英文版)》2004,3(1):86-88
The problem on the geometrc inequalities involving an n-dimensional simplex and its inscribed simplex is studied. Aninequality is established, which reveals that the difference between the squared circumradius of the n-dimensional simplex andthe squared distance between its circumcenter and barycenter times the squared circumradius of its inscribed simplex is not lessthan the 2(n-1)th power of n times its squared inradius, and is equal to when the simplex is regular and its inscribed siplex is atangent point one. Deduction from this inequality reaches a generalization of n-dimensional Euler inequality indicating that thecircumradius of the simplex is not less than the n-fold inradius. Another inequality is derived to present the relationship betweenthe circumradius of the n-dimensional simplex and the circumradius and inradius of its pedal simplex. 相似文献
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GUO Bao-feng Xiao Da-wei 《重庆大学学报(英文版)》2005,4(3):129-133
Using virtual reality for interactive design gives a designer an intuitive vision of a design and allows the designer to achieve a viable, optimal solution in a timely manner. The article discusses the process of making the Virtual Reality System of the Humble Administrator＇s Garden. Translating building data to the Virtual Reality Modeling Language （VRML） is by far unsatisfactory. This creates a challenge for computer designers to do optimization to meet requirements. Five different approaches to optimize models have been presented in this paper. The other methods are to optimize VRML and to reduce the file size. This is done by keeping polygon counts to a minimum and by applying such techniques as object culling and level-ofdetail switching. 相似文献
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The awareness of individualism can be traced back to the period of American Revolution when the Declaration of Independence was produced.It expressed basic beliefs concerning freedom,equality,democracy,privacy and the relationship between people and government,which were exactly what the philosophy of individualism mostly dealt with at that time.This paper is to exploit the essence of individualism by analyzing the Declaration .The analysis enables us to reconsider its significance to the issue of America human rights and foreign policies. 相似文献
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李晓劲 《读与写:教育教学刊》2008,5(6)
Public speaking, as one kind of speech act, the speaker uses some pragmatic strategies, for example,the use of personal pronoun, in order to achieve effective communication. Speakers use the first personal pro-noun we and the second personal pronoun you conventionally, also there are some deviations in the use of person-al pronouns. However, theses kinds of uses have to be explained and understood in such a specific context. 相似文献