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1.
姚奕 《经济数学》2011,28(2):6-10
从生态学视角来研究企业竞争的动态演化已成为一个研究热点,针对现有研究文献中只讨论二维系统的不足,以三个企业之间的竞争为例,构造了企业间竞争的三维模型,运用微分方程稳定性理论分析其稳定性,并由此揭示出企业间竞争的动力学机制.数值仿真结果表明,该三维模型能有效地模拟企业间竞争的动态演化规律.  相似文献   

2.
针对我国包装产业园内中小型企业物流供需面临上下游两方受压以及整体竞争力不强现象,提出企业间物流协同策略.运用演化博弈方法在相关假设基础上,构建物流协同演化博弈模型,探讨协同稳定点、演化路径并求解其影响因素间关系式.研究表明,中小包装企业物流协同正向演化受产品市场占有率、协同成本、协同效应、协同成本分摊和收益共享比例的复合影响.企业可根据自身所处不同水平下做出有利于协同正向演化的决策,相关管理部门可根据因素间具体关系式精准引导协同正向演化.  相似文献   

3.
在全球化背景下,核型创新网络在向全球创新网络演进的过程中面临多市场竞争和关键资源竞争的双重考验。首先构建全球市场环境下核型创新网络多层次竞合模型;其次,运用Lotka-Volterra模型和演化博弈模型分别剖析核心企业间的竞争关系和尾端企业间的竞合关系,并据此构建改进的LV-EG模型以分析尾端企业竞合关系对核心企业间竞争关系的作用机理;最后,运用matlab对改进的LV-EG模型进行仿真。仿真结果表明:核心企业的尾端企业报酬支付能力、创新产品生产能力、创新环境和网络结构对核型创新网络在全球范围内吸引优质企业并在全球市场环境中获取竞争优势具有重要影响。  相似文献   

4.
韩莹  陈国宏 《运筹与管理》2018,27(9):139-147
基于不同网络层次嵌入视角,考虑集群内网络和超集群网络嵌入的不同情况,综合运用Hotelling博弈和演化博弈,建立集群企业与集群外部企业间知识共享决策与演化的动态模型,探讨在无政府补贴和有政府补贴条件下高技术与低技术集群企业间的博弈决策。研究发现,高技术集群企业会挤占低技术集群企业与集群外企业的知识共享,知识共享成本是影响集群内外企业知识共享的关键因素,政府可以引导集群内企业更多地与集群外企业进行知识共享。最后运用数值仿真对研究结论进行验证。  相似文献   

5.
为了促进社会网络中企业间的知识转移,加快新知识的传播速度,建立企业间知识转移过程的网络演化博弈模型,模拟企业间知识转移过程;在此基础上考虑企业策略优化问题,基于演化博弈模型给出一种促进企业间知识转移过程的算法.首先,运用半张量积理论将网络演化知识博弈模型代数化,通过对博弈演化过程的分析,得出该博弈的演化趋势;其次,运用给出的算法在网络中找到相应的控制节点,从而使得博弈的演化达到期望的状态;最后,通过仿真实例证明该算法的可行性.  相似文献   

6.
传统企业间合作博弈问题的研究大都是基于合作策略和不合作策略两种情形展开,而与传统研究不同,本文在此基础上将企业间不合作策略细分为竞争策略和中立策略。以多功能开放型供需网企业为研究对象,运用演化博弈理论分析方法,通过构建供需网企业合作演化博弈模型,进而分析供需网企业合作过程中策略的选择以及博弈演化路径问题。研究结果表明:在长期的演化博弈过程中,企业策略的选择情形出现不稳定现象,即出现完全合作、完全不合作或者一方合作而另一方选择不合作策略的多种状态,其演化路径最终稳定于何种情形与模型的支付矩阵和初始参数设置有关。  相似文献   

7.
小额贷款保证保险是利用保险缓解小微企业融资难的有效方式.文章采用三群体演化博弈模型,研究小微企业、小额贷款公司、保险公司在小额贷款保证保险中的行为和影响机制.引入项目收益率、贷款利率、保费率、保险赔付率、债权回收率等变量,构建三群体演化博弈复制动态方程,得出演化稳定策略.应用Matlab软件,做三维数值仿真分析,验证演化稳定策略结果.研究得出,债权回收率、保险赔付率、项目收益率、保险赔付率与债权回收差额对演化稳定策略具有正向影响.  相似文献   

8.
产业集群的知识共享机制的演化博弈分析   总被引:15,自引:1,他引:14  
本文以演化博弈理论方法,建立了一个产业集群的知识共享机制的演化博弈模型,分析了产业集群的知识共享机制的动态演变过程,得出了产业集群的文化环境、企业对知识的吸收转化能力、企业间知识水平的差异是影响产业集群的知识共享机制演化的关键因素。  相似文献   

9.
产业集群内企业一方面可以获得竞争优势,但同时在一定程度上也容易产生恶性价格竞争等不良行为。本文利用贝特兰德模型分析企业的产品定价,并从无限博弈角度分析联盟的稳定性,指出企业应采取增加产品差异性和组建联盟等方法避免企业间的恶性价格竞争,以实现集群内企业的共赢.  相似文献   

10.
运用演化博弈理论分析了在同一市场两类零售企业行为的演化过程.根据两类企业竞争策略的复制者动态方程,分析了两类企业策略选择的演化均衡特征,并分析了一些主要参数对企业竞争策略选择的影响.结果表明,企业的相对实力和两企业竞争成本的乘积对企业行为的演化起着至关重要的作用.  相似文献   

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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.
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   

14.
As early as in 1990, Professor Sun Yongsheng, suggested his students at Beijing Normal University to consider research problems on the unit sphere. Under his guidance and encouragement his students started the research on spherical harmonic analysis and approximation. In this paper, we incompletely introduce the main achievements in this area obtained by our group and relative researchers during recent 5 years (2001-2005). The main topics are: convergence of Cesaro summability, a.e. and strong summability of Fourier-Laplace series; smoothness and K-functionals; Kolmogorov and linear widths.  相似文献   

15.
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   

16.
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   

17.
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   

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