共查询到20条相似文献，搜索用时 62 毫秒
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构造了一个具有二次光滑性的NCP函数,通过它将变分不等式问题转化为无约束优化问题,用一种改进的拟牛顿算法对其进行求解,有效地弥补了以往的拟牛顿算法要求目标函数具有凸性或一致凸性的缺陷,在更弱的条件下讨论了算法的收敛性质. 相似文献
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使用加性Schwarz算法求解带T-单调函数对应的非线性互补问题(NCP),该算法在特殊选取初值情况下具有单调收敛性. 相似文献
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对不同教材的函数凹凸定义进行比较,对函数凹凸性的相关性质进行讨论,并对函数凹凸性的应用进行研究. 相似文献
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单调性是函数的一种非常重要的性质,它反映了函数值随自变量增大而增大或减小的变化规律.本文对函数单调性进行变式研究,得出了一些有用的结论. 相似文献
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函数的性质是函数教学的重要组成部分,单调性、奇偶性是函数的2个基本性质,学生对以上概念往往只理解表面,导致在利用性质解题过程中出现这样或那样的错误.本文举例剖析函数单调性和奇偶性中易错点.1忽视分段函数分段点处的单调性致错。 相似文献
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非线性互补问题(NCP)是一类应用非常广泛的问题。提出了一种积极集算法用于求解带M-函数NCP,给出了算法的收敛性定理。数值实验表明该算法具有有效性。 相似文献
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王寅川 《数学学习与研究(教研版)》2013,(3):100
函数的单调性是函数众多性质中的重要性质之一,函数的单调性是研究具体函数的单调性理论基础;在解决函数值域、定义域、不等式、比较两数大小等具体问题中均需用到函数的单调性;本文从定义域、应用方面对函数的单调性作一些分析. 相似文献
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罗艳萍 《读与写:教育教学刊》2008,5(6)
The communication of people partially is the communication of cultures. Culture has a direct effect on international commercial activities in all aspects. Different conceptions about time, space, equality, law and the like, lead people to deal with things in different ways. So to know cultures of the counterpart is to facil-itate our enterprises so as to have a smooth and successful communication in commercial activity. 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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Richard Denner 《海外英语》2007,(4):14-15
Rosco and I wait for the fishermen to return.I sit at a wooden bench near the store at Mt.Baker Resort and watch the clouds change shape. Rosco has my belt around his neck and an eight foot tow chain hooked to a tree. Dogs must be on a leash. Ducks and rabbits are loose. 相似文献
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Given a graph G,a subgraph C is called a clique of G if C is a complete subgraph of G maximal under inclusion and |C|≥2. A clique-transversal set S of G is a set of vertices of G such that S meets all cliques of G. The clique-transversal number, denoted as TC (G), is the minimum cardinality of a clique-transversal set in G. The clique-graph of G, denoted as K (G), is the graph obtained by taking the cliques of G as vertices, and two vertices are adjacent if and only if the corresponding cliques in G have nonempty intersection. Let F be a class of graphs G such that F={G|K(G) is a tree}. In this paper the graphs in F having independent clique-transversal sets are shown and thus TC (G)/|G|≤1/2 for all G ∈ F. 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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陈美曦 《山东教育学院学报》2008,23(2):103-107
Different nations have different social cultures, and the social culture of every nation is developing with the development of the nation, language is greatly influenced by social culture, which enables language to possess national and historical characteristics. Word is the smallest, independent, meaningful linguistic unit of language. It can well reflect the national and historical characteristics. From synchronic aspect, the social and cultural influence on word meaning is mainly embodied in conceptual and associative meanings of word. The incorrespondence of word meaning is a phenomenon that exists in both conceptual and associative meanings of word among different languages. From diachronic aspect, the development of social culture causes some changes of word meaning to some extent. Therefore, social culture plays a key role in vocabulary learning and mastery of a language. 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