资源禀赋视角下政府与企业互动行为演化分析

针对政府与企业资源的异质性,从资源禀赋的视角,对政府与企业互动的不同模式(随机合作型、政策驱动型、技术推动型、协作共赢型)的界定与分析,构建政府与企业互动行为的演化博弈模型,明确政府与企业在不同模式下的互动行为演化路径。研究结果表明:政府与企业不同互动模式存在显著差异,不同类型企业与政府之间的互动对应着某种互动模式;不同互动模式的产生和演化契合政企互动关系的发展历程;协作共赢型互动模式是政府与企业互动行为演化的高级阶段,有利于政府与企业形成紧密的合作,激发政府政策资源与企业技术资源的协同效应。     

基于DCC-GARCH模型的金属期货市场与外汇、货币市场的动态相关性研究

在本文中主要是把DCC-GARCH模型,引入到金属期货市场分别与外汇市场和货币市场之间的动态相关性领域进行研究。通过对LME铜分别与RMB/USD、USD/EU、JPY/USD三个汇率之间的动态相关性研究,研究结果表明:金属期货市场与外汇市场之间有一定的动态相关性,但是不是很强烈;通过对LME铜分别与RMB-USD、USD-EU、JPY-/USD三个利差变化率之间的动态相关性研究,结果表明:金属期货市场与货币市场之间的动态相关性并不明显。     

关于粗糙模糊集的相似度量

基于对不确定性信息处理的背景,定义了粗糙模糊值与粗糙模糊集的相似度量,研究了它们的有关性质.     

The Extraction Degree of Cale Monoids

The extraction degree measures commonality of factorization between any two elements in a commutative, cancellative monoid. Additional properties of the extraction degree are developed for monoids possessing a Cale basis. For block monoids, the complete set of extraction degrees is calculated between any two elements, between any two irreducible elements, and between any irreducible element and any general element.     

高阶Bernoulli多项式和高阶Euler多项式的关系

利用发生函数的方法，讨论了高阶Bernoulli数和高阶Euler数，高阶Bernoulli多项式和高阶Euler多项式之间的关系，得到了经典Bernoulli数和Euler数，经典Bernoulli多项式和Euler多项式之间的新型关系。     

粗糙Vague集及其相似度量

对粗糙V ague集的基本操作和性质进行了研究。另外,对粗糙V ague集的相似度量问题进行研究,首先构造一种粗糙V ague值的相似度函数并给出其基本性质,然后给出一种粗糙V ague集的相似度函数以及一种粗糙V ague集的加权相似度函数。     

研究生录取的优化模型

把研究生录取分解为师生间的评价问题和师生间配对最优化的问题.建立了师生相互评价的指标体系和量化评价指标的计算模型,以满意度计量评价结果,提出了相互满意度的概念,建立了使师生配对达到整体总满意度最大的整数规划优化模型.根据建立的模型,解决了具体的研究生录取问题.所建立的模型具有较强的实用性、可操作性和可扩展性.     

Homotopy and semisymmetry of quasigroups

The study of quasigroup homotopies reduces to the study of homomorphisms between semisymmetric quasigroups. In particular, the study of homotopies between central quasigroups reduces to the study of homomorphisms between entropic semisymmetric quasigroups. Received December 20, 1996; accepted in final form September 17, 1997.     

Survey of polynomial transformations between NP-complete problems

This paper aims at being a guide to understand polynomial transformations and polynomial reductions between NP-complete problems by presenting the methodologies for polynomial reductions/transformations and the differences between reductions and transformations. To this end the article shows examples of polynomial reductions/transformations and the restrictions to reduce/transform between NP-complete problems. Finally, this paper includes a digraph with the historical reductions/transformations between instances of NP-complete problems and introduces the term family of polynomial transformations.     

Energy interaction between linear and nonlinear oscillators (energy transfer through the subsystems in a hybrid system)

The analysis of the energy transfer between subsystems coupled in a hybrid system is an urgent problem for various applications. We present an analytic investigation of the energy transfer between linear and nonlinear oscillators for the case of free vibrations when the oscillators are statically or dynamically connected into a double-oscillator system and regarded as two new hybrid systems, each with two degrees of freedom. The analytic analysis shows that the elastic connection between the oscillators leads to the appearance of a two-frequency-like mode of the time function and that the energy transfer between the subsystems indeed exists. In addition, the dynamical linear constraint between the oscillators, each with one degree of freedom, coupled into the hybrid system changes the dynamics from single-frequency modes into two-frequency-like modes. The dynamical constraint, as a connection between the subsystems, is realized by a rolling element with inertial properties. In this case, the analytic analysis of the energy transfer between linear and nonlinear oscillators for free vibrations is also performed. The two Lyapunov exponents corresponding to each of the two eigenmodes are expressed via the energy of the corresponding eigentime components. Published in Ukrains'kyi Matematychnyi Zhurnal, Vol. 60, No. 6, pp. 796–814, June, 2008.     

格蕴涵代数中的扩张滤子

在格蕴涵代数中提出了扩张滤子的概念,讨论了扩张滤子与滤子,扩张滤子与素滤子,扩张滤子与滤子的根,扩张滤子与准素滤子,扩张滤子与最大滤子之间的关系.得到了扩张滤子的一些性质.最后,证明了在格H蕴涵代数中,扩张滤子与扩张滤子的根相等.     

A、B股指数波动的Granger因果关系分析

本文利用时间序列分析中的格兰杰因果关系检验法对中国证券市场A、B股的波动性进行分析 ,发现上海市场A、B股的波动间存在双向因果关系 ,而深圳市场A、B股的波动间则不存在显著可信的因果关系。对于A、B股市场间的关系以及深、沪两市的差异 ,本文从信息传递和交易者构成的角度进行了分析     

A relationship between three analytical approaches to nonlinear problems

In this work, the relationship between three analytical techniques is demonstrated. The direct relationship between the variational approach (VA) and the Hamiltonian approach (HA) is illustrated for a first approximation, and subsequently the relationship between the variational approach and the harmonic balance method (HBM) is concluded. Moreover, the relationship between HA and VA is investigated for higher order solutions.     

Ideals and clots in universal algebra and in semi-abelian categories

We clarify the relationship between basic constructions of semi-abelian category theory and the theory of ideals and clots in universal algebra. To name a few results in this frame, which establish connections between hitherto separated subjects, 0-regularity in universal algebra corresponds to the requirement that regular epimorphisms are normal; we describe clots in categorical terms and show that ideals are images of clots under regular epimorphisms; we show that the relationship between internal precrossed modules and internal reflexive graphs extends the relationship between compatible reflexive binary relations and clots.     

Cohomological Mackey functors in number theory

We prove relations between the evaluations of cohomological Mackey functors over complete discrete valuation rings or fields and apply this to Mackey functors that arise naturally in number theory. This provides relations between λ- and μ-invariants in Iwasawa theory, between Mordell-Weil groups, Shafarevich-Tate groups, Selmer groups and zeta functions of elliptic curves, and between ideal class groups and regulators of number fields.     

政府不同策略下用户创新知识交互差异化研究

知识交互是用户创新的重要环节,基于知识基础观和博弈论,考虑政府在用户创新中对企业与用户知识交互的激励作用,构建“政府-企业-用户”三方演化博弈模型,探讨政府不同策略下企业与用户之间知识交互行为的演化路径,分析不同约束条件下主体策略选择情况,并进行数值模拟。研究结果表明:政府政策激励在推动用户创新知识交互过程中有重要作用。当企业与用户知识交互紧密时,政府趋向于采取支持策略。当企业与用户知识交互收益小于某一阈值时,政府支持是决定用户创新知识交互的关键变量。当企业与用户知识交互收益处于某个范围时,政府支持并不会显著影响企业和用户的知识交互行为。     

Partial lineations between arguesian projective spaces

This paper generalizes former versions of the so-called fundamental theorem of projective geometry. It shows that generalized semilinear maps between vector spaces correspond to certain partial lineations between the associated projective spaces. In particular, it gives a characterization of all nondegenerate lineations between arguesian projective spaces.     

沪深股市夏普比率的多重分形相关性分析

不同市场的相互关系是金融中的热点问题,现有研究常常仅从风险或者收益的角度加以讨论,忽视了股票市场风险与收益不可分割性的特征.基于此,本文从沪深股市的夏普比率的角度分析了两个市场的相互关系.结果表明,两个市场间的协整不明显,其相关性呈现多重分形波动.     

ASSESSING EARLY MATHEMATICAL DEVELOPMENT

The work discussed here is part of an international study involving Dutch, Belgian, German, Greek, Finnish and Slovenian as well as English children aged between 52 and 98 months. The project is coordinated by the University of Utrecht and employs the Utrecht Early Mathematical Competence Test. The full international data set is currently being analysed. This paper reports only the analysis of the English data, together with some international data already in the public domain. The data are interrogated to throw light upon (a) the comparison between England and other countries, (b) the relationship between age and mathematical attainment in the English sample, (c) differences between boys and girls and (d) the relationship between attainment in Piagetian tasks and more arithmetical tasks.     

中央与地方政府PM2.5治理策略分析

本文以京津冀雾霾治理为例,综合考虑了PM_2.5在地区间的非对称性跨界传输影响、PM_2.5治理对民众、企业、政府带来的协同效应。从中央与地方政府视角对比分析了减排指标约束下利益各方的PM_2.5治理策略偏好。研究表明:由于跨界传输因子的影响,合作与非合作时污染物的去除量不一定相等。当各地合作与非合作污染物去除量相等时,合作与非合作成本无差异;否则,合作成本优于非合作,而合作成本的降低源于总体减排量减少。如果跨界传输因子增大或减小,合作与非合作治理的成本差距相应地会增加或减小,各地方政府合作治理意愿会逐渐增大或减小;而中央政府可能更希望地方政府在完成减排指标时能尽可能多减排,因此倾向于地方政府采取非合作治理。减排指标设置时应考虑合作与非合作时收益差异,以及各地经济发展水平等因素的影响。