共查询到20条相似文献，搜索用时 640 毫秒
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通过研究单纯形上的Ｂ形式曲面，给出了三角域上Ｂｅｚｉｅｒ．曲面和矩形域上张量积Ｂｅｚｉｅｒ曲面在三维单纯形上的Ｂ形式表示，由此得到了三角域上Ｂｅｚｉｅｒ曲面和矩形域上张量积Ｂｅｚｉｅｒ曲面之间的互化公式，最后把这些结果推广到高维单纯形条件下 相似文献
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基于小波分析的信号突变点探测及其MATLAB仿真 总被引：3，自引：0，他引：3
小波变换突破了傅立叶分析在时域和频域方面的局部化能力，适合对非平稳信号的处理。信号的突变部分包含了信号的许多重要信息。在介绍了小波分析的概念及其时频方面性质的基础上，分析并仿真了小波变换的时频局部化在信号突变部分探测中的理论与应用。 相似文献
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由于多复变函数的理论在诸多方面与单复变函娄的理论有着本质的区别，因而单复变函数的许多性质在多复变函数中已不再成立，本文在引进两个Banac空间的基础上，讨论了一类积分算子的性质，从而将单复变的广义解析函 理论推广到了多个复变量的情形，给出了多复变广义解析函数的表示式及其性质，如广义Liouville定理，唯一性定理，广义最大模原理，凝聚原理和广义多重幂级数，并进一步给出了较一般的复方程组正则解的两类表示式。 相似文献
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翟锋 《青岛职业技术学院学报》1988,(2)
本文建立了广义Г—环上模的Morita结构,并由此得到了Morita定理;用此定理给出了广义单Artin—Г—环结构定理的另一证明方法。 在文[1]中,陈维新给出了广义Г—环的概念,[2]讨论了本原广义Г—二坏的结构,给出了广义Г—环上的模。在此基础上,本文引进了广Г—环上的投射生成模,模的α—张量积从而建立了Morita结构理论。并应用此理论与[2]中一些结果,给出了左、右Artin单广义Г—环的结构定理的另一证明方法。 相似文献
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论信托受益权的性质 总被引：1，自引：0，他引：1
马涛 《漯河职业技术学院学报》2005,4(1):110-112
受益权在信托关系中有着极其重要的地位，确定受益权的性质是一个十分重要的问题。关于受益权的性质有着众多的观点，笔者认为确定受益权的性质应分别从狭义受益权和广义受益权两个方面去考察。在性质上，狭义受益权属于物权，广义受益权属于特殊的新型权利。 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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《海外英语》2007,(5):10-11
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? 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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《海外英语》2007,(4):36
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. 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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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. 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