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1.
共性技术是国家技术发展过程中的关键技术,它对提升国家的产业技术能力与国际竞争力具有重要的推动作用.但是,目前世界各国的技术预见实践中,鲜有对共性技术的识别方法提供一套有效的系统方案.基于多属性决策理论,采用德尔菲调查的方法,提供了一种计算技术课题发展优先度的具体方案,并提出了相关建议.  相似文献   

2.
联盟激励机制中的委托代理问题   总被引:1,自引:0,他引:1  
杨东  谢恩  李垣  邓晓琳 《运筹与管理》2006,15(1):125-128
联盟中存在主导企业和从属企业时,联盟成员的关系类似于委托代理关系。本文结合委托代理理论得出:主导企业和从属企业进行关键技术投入的条件,以及从属企业的激励系数和主导企业达到效用最大化与绩效测量方差相关。  相似文献   

3.
电子政务系统中面向公众的个性化信息服务模型   总被引:6,自引:0,他引:6  
陈福集 《运筹与管理》2005,14(4):70-73,69
电子政务作为Internet的主要应用领域,已受到世界各国的普遍关注。面对公众各种服务需求日趋个性化,如何打破政府职能机构的条块分割,构建一个一体化的虚拟政府,集成各类信息资源,为公众提供“一站式”的、个性化的服务,是当前电子政务理论和实践的热点课题。本文首先提出一个面向公众的“一站式”服务总体框架;其次,将个性化信息服务的概念引入到电子政务系统中,构建一个个性化信息服务模型;最后,运用数据挖掘技术对模型中的关键技术加以实现。  相似文献   

4.
验证和确认及不确定度量化(V&V&UQ)已成为工程应用软件可信度评估的最佳途径,是一个知识密集型很强的系统化工程,涉及众多数学方法和关键技术.本文围绕建模与模拟的工程仿真软件预测能力和可信度评估所面对的挑战,对V&V&UQ实施过程中涉及的数学方法、关键技术、求解算法、实施流程和自研分析工具等进行了系统化梳理和归纳总结,...  相似文献   

5.
人类几千年文明的历史已经证明,不论哪个民族、哪个国家的创造力得到开发,那么,这个民族,这个国家就会兴旺发达,不然,则会走向反面、趋向衰落。  相似文献   

6.
《珠算》2010,(2):16-16
国务院办公厅20日发布“中华人民共和国国务院令第571号”,公布了修订后的《中华人民共和国审计法实施条例》,决定自2010年5月1日起施行。修订后的条例规定,违反国家规定取得的资产,包括“违反国家规定向他人收取的有价证券”。  相似文献   

7.
《珠算与珠心算》2004,(5):21-21
“珠心算教练师”国家职业标准,经劳动和社会保障部批准,已正式列入国家新职业标准,职业编码209-99-01。2004年6月15日劳动和社会保障部办公厅以劳社厅发[2004]7号文件《关于印发第九批国家职业标准的通知》公布,并见著报端向社会公布。  相似文献   

8.
HOLD住资金     
《珠算》2012,(1):56-57
各位CFO朋友,大家新年好:正如在2011年给CFO的一封信中曾经提到“2011年或将差钱”的观点,受到2011年国家实行紧缩性货币政策的影响,企业逐渐出现融资难、资金短缺等方面的问题,而在国家相关政策尚不明朗的情况下,2012年中国经济发展以及融资环境还存在诸多的不确定性,  相似文献   

9.
本文报道了万兆瓦可调谐窄线宽新型钕玻璃激光装置的特色、所涉及的若干物理问题、装置的总体光路排布和关键技术,以及装置的总体输出性能。  相似文献   

10.
灵活的应用数学技术   总被引:3,自引:0,他引:3  
杨德庄 《数学进展》2005,34(1):1-16
E.E.Daivd指出“当今被称颂的高技术实质上是一种数学技术”,H.Neunzert称“数学是关键技术的关键”.这是人类对数学的新认识一数学既是科学又是技术.数学技术主要是指应用数学技术.它的高难度突出地体现在以解决实际问题为目标的研究上.这就必须灵活地运用数学思想和方法,抓住事物内在最本质的数学结构,提炼其特殊的数学模型,给出精巧的好算法并解决之.本文简述了华罗庚应用数学技术的特色、近期发展及其某些思想与新概念等.  相似文献   

11.
12.
We study a class of self-similar processes with stationary increments belonging to higher order Wiener chaoses which are similar to Hermite processes. We obtain an almost sure wavelet-like expansion of these processes. This allows us to compute the pointwise and local Hölder regularity of sample paths and to analyse their behaviour at infinity. We also provide some results on the Hausdorff dimension of the range and graphs of multidimensional anisotropic self-similar processes with stationary increments defined by multiple Wiener–Itô integrals.  相似文献   

13.
张丽娜  吴建华 《数学进展》2008,37(1):115-117
One of the most fundamental problems in theoretical biology is to explain the mechanisms by which patterns and forms are created in the'living world. In his seminal paper "The Chemical Basis of Morphogenesis", Turing showed that a system of coupled reaction-diffusion equations can be used to describe patterns and forms in biological systems. However, the first experimental evidence to the Turing patterns was observed by De Kepper and her associates(1990) on the CIMA reaction in an open unstirred reactor, almost 40 years after Turing's prediction. Lengyel and Epstein characterized this famous experiment using a system of reaction-diffusion equations. The Lengyel-Epstein model is in the form as follows  相似文献   

14.
Schr(o)dinger operator is a central subject in the mathematical study of quantum mechanics.Consider the Schrodinger operator H = -△ V on R, where △ = d2/dx2 and the potential function V is real valued. In Fourier analysis, it is well-known that a square integrable function admits an expansion with exponentials as eigenfunctions of -△. A natural conjecture is that an L2 function admits a similar expansion in terms of "eigenfunctions" of H, a perturbation of the Laplacian (see [7], Ch. Ⅺ and the notes), under certain condition on V.  相似文献   

15.
It is considered the class of Riemann surfaces with dimT1 = 0, where T1 is a subclass of exact harmonic forms which is one of the factors in the orthogonal decomposition of the spaceΩH of harmonic forms of the surface, namely The surfaces in the class OHD and the class of planar surfaces satisfy dimT1 = 0. A.Pfluger posed the question whether there might exist other surfaces outside those two classes. Here it is shown that in the case of finite genus g, we should look for a surface S with dimT1 = 0 among the surfaces of the form Sg\K , where Sg is a closed surface of genus g and K a compact set of positive harmonic measure with perfect components and very irregular boundary.  相似文献   

16.
In this paper, we study the explicit representation and convergence of (0, 1; 0)-interpolation on infinite interval, which means to determine a polynomial of degree ≤ 3n - 2 when the function values are prescribed at two set of points namely the zeros of Hn(x) and H′n(x) and the first derivatives at the zeros of H′n(x).  相似文献   

17.
18.
正Applied Mathematics-A Journal of Chinese Universities,Series B(Appl.Math.J.Chinese Univ.,Ser.B)is a comprehensive applied mathematics journal jointly sponsored by Zhejiang University,China Society for Industrial and Applied Mathematics,and Springer-Verlag.It is a quarterly journal with  相似文献   

19.
正Journal overview:Journal of Mathematical Research with Applications(JMRA),formerly Journal of Mathematical Research and Exposition(JMRE)created in 1981,one of the transactions of China Society for Industrial and Applied Mathematics,is a home for original research papers of the highest quality in all areas of mathematics with applications.The target audience comprises:pure and applied mathematicians,graduate students in broad fields of sciences and technology,scientists and engineers interested in mathematics.  相似文献   

20.
A cumulative-capacitated transportation problem is studied. The supply nodes and demand nodes are each chains. Shipments from a supply node to a demand node are possible only if the pair lies in a sublattice, or equivalently, in a staircase disjoint union of rectangles, of the product of the two chains. There are (lattice) superadditive upper bounds on the cumulative flows in all leading subrectangles of each rectangle. It is shown that there is a greatest cumulative flow formed by the natural generalization of the South-West Corner Rule that respects cumulative-flow capacities; it has maximum reward when the rewards are (lattice) superadditive; it is integer if the supplies, demands and capacities are integer; and it can be calculated myopically in linear time. The result is specialized to earlier work of Hoeffding (1940), Fréchet (1951), Lorentz (1953), Hoffman (1963) and Barnes and Hoffman (1985). Applications are given to extreme constrained bivariate distributions, optimal distribution with limited one-way product substitution and, generalizing results of Derman and Klein (1958), optimal sales with age-dependent rewards and capacities.To our friend, Philip Wolfe, with admiration and affection, on the occasion of his 65th birthday.Research was supported respectively by the IBM T.J. Watson and IBM Almaden Research Centers and is a minor revision of the IBM Research Report [6].  相似文献   

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