具有竞争关系的多参与人委托代理问题研究

针对多委托人一多代理人委托代理问题,本文在多委托人之间和多代理人之间均存在竞争关系情形下,建立了非对称信息委托代理模型.分析表明,代理人努力水平对其产出的作用越敏感,代理人和委托人都越愿意付出更多努力;当委托人业务能力高低对代理人的影响较敏感时,委托人更愿意花心思去提高业务能力;委托一代理关系中的任何一方竞争过于激烈时会被处于委托一代理关系中的另一方利用.     

高科技企业创业社会网络构建的委托代理机制

本文比较了高科技企业创业社会网络构建的委托代理关系与传统意义上的委托代理关系的差异；考虑创业社会网络（个体）的成长因素，建立了创业社会网络构建的单期委托代理模型和三期委托代理模型，并进行了比较分析，提出高科技企业创业社会网络的构建必须关注对象的多元化、能力的差异化、激励的滞后化、观念的动态化。     

风险内生的委托代理模型研究

证券投资基金的委托代理关系与一般的委托代理关系不同,在一般的委托代理关系中,产出的风险是外生的,而基金产出的风险是内生的,即风险是由基金管理人来选择的.在模型假设的背景下,在不考虑基金管理人的努力成本时,基金委托代理关系中不存在道德风险问题.如果考虑基金管理人的努力成本,当其行为不可观测时,基金投资者无法通过契约参数的变化来影响基金管理人的努力水平,但此时投资组合的风险水平将低于基金管理人行为可观测时的情况.实证研究证实了基金收益分享比例与基金管理人努力程度无关的模型推论.     

基于委托—代理理论的自然灾害保险模型

灾害保险是筹措防灾救灾资金的重要手段之一，文章运用博弈论中的委托—代理理论建立自然灾害的保险模型，对有关自然灾害的最优保险费率的确定及其特征进行了研究，为开展自然灾害的保险业务提供理论依据     

联盟激励机制中的委托代理问题

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。     

网络团购供应链委托代理激励机制研究

运用委托代理理论的基本原理和方法,以一个供应商和一个团购网站组成的二级供应链为基础,建立了供应商为委托人、团购网站为代理人的博弈模型,研究了供应商对团购网站的激励机制,并利用最优化原理进行了求解得出了最优激励强度系数,并给出了算例.结果表明:总代理成本随风险规避度、市场随机因素方差和产出系数的增加而增加,随团购网站成本系数的增加而减少;供应商确定性等价收益和供应商支付给团购网站的报酬随团购网站成本系数、风险规避度和市场随机因素方差的增加而减少,随团购网站产出系数的增加而增加.     

基于委托代理理论的渠道成员激励机制分析

渠道冲突管理是渠道管理的重要内容,而渠道冲突管理的核心是设计有效的渠道成员激励机制。本文通过建立渠道成员激励的委托代理模型,得到渠道成员努力水平可以观测和不可观测下的最优激励合同,并对边际产出、成本系数、绝对风险规避程度、不确定性随机变量方差等因素对渠道成员激励机制的影响进行探讨。     

税务稽查委托代理模型

本文在委托—代理理论框架下,讨论税务稽查监督问题.对影响税务稽查人员败德系数的因素进行分析,指出国家税务机关在设计“提高税务稽查人员敬业精神,减少败德行为发生”的激励机制时应首选——减少税务稽查人员的自由裁量权,加强税法刚性原则.     

高校教师教学质量评议机制的委托-代理模型分析

高校教学评议体制是高等教育质量保障体系的重要组成部分,但是实践中仍存在一些问题:过分强调科学管理主义而忽视了教师的精神激励;可能出现学生评价不准确和不负责任,学生与教师之间形成合谋等现象导致监督和考评作用失效;教学质量评价指标的科学化、教学评议的反馈途径等.通过建立高校教学质量评议的委托代理模型,同时考虑到高校教师的工资待遇等物质激励,以及职业道德和自我价值实现等精神激励两种因素,剖析了无私奉献和机会主义两种教学行为的混同均衡和分离均衡条件;最后,提出改进和完善高校教学质量评估的建议.     

基于委托代理模型的岗位竞聘问题的研究

将委托代理模型引入岗位竞聘问题中,并在两阶段委托代理模型中引入审核机制,首先建立了岗位竞聘问题的单阶段委托代理模型,然后通过建立两阶段的委托代理模型来促使代理人讲真话,最后引入事前审核机制进一步优化岗位竞聘问题.分析表明契约本身具有鉴别代理人类型的功能,但要在契约签订之后才显现出来,在契约签订之前进行审核可以以一定的概率显示代理人真实类型,但需要支付一定的成本,委托人需要进行利益权衡选择审核与否.     

EFFECT OF TOXIC SUBSTANCE ON A NONAUTONOMOUS COMPETITIVE SYSTEM

In this paper, we consider a nonautonomous competitive system which is also affected by toxic substances. Some averaged conditions for the permanence of this system are obtained. Our result shows that under some suitable assumption on the coefficients of the system, the toxic has no influence on the permanence of the system. Also, by using a suitable Lyapunov function, sufficient conditions which guarantee the attractivity of any two positive solutions of the system are obtained.     

企业信用评估指标体系与评价方法研究

市场经济是信用经济,但当前我国经济运行中失信问题突出,诚信建设尤其是企业信用建设亟待加强。信用体系建设的核心是选择科学的信用评估指标体系与评估方法。本文从企业征信的基本模式、企业信用评估的指标体系和评估模型三个方面阐述信用评估方法,同时结合我国实际对信用体系建设提出了建议。     

企业科技行为系统的评价体系研究

现代企业科技行为属于高阶非线性系统行为，对其运行的评价应采用系统评价的思想和方法进行。本文确定了现代企业科技行为系统评价的基本准则，构建了评价的指标体系；提出了各指标值的归一化处理方法以及各指标权重的确定方法     

一类离散生态经济系统稳定性与分支研究

本文研究了一个离散生态经济模型的稳定性和分支问题.利用离散奇异系统理论,中心流形定理及Neimark-Sacker分支理论,得到了系统关于不动点的稳定性和Neimark-Sacker分支的有关结果,并与相应的连续模型进行对比分析.推广了文献[5]的结果.     

NOTE ON THE PARTIAL SURVIVAL OF A TWO SPECIES LOTKA-VOLTERRA COMPETITIVE SYSTEM WITH INFINITE DELAYS AND FEEDBACK CONTROLS

A two species Lotka-Volterra competitive system with infinite delays and feedback controls is studied in this paper.By constructing a suitable Lyapunov functional,we show that if the Lotka-Volterra competitive system is bistable(in the absence of feedback controls),then by choosing some suitable values of feedback control variables,one of the species is driven to extinction while the other one becomes globally stable.Examples together with their numerical simulations are presented to verify the feasibility of our results.Our results not only improve but also complement those of Z.Li,M.A.Han and F.D.Chen[Influence of feedback controls on an autonomous Lotka-Volterra competitive system with infinite delays,Nonlinear Anal.:Real World Appl.,14(2013),402-413].     

THE EFFECT OF DECREASING SYSTEM SIZE ON BIRTH AND DEATH MODELS OF OPEN-ACCESS FISHERIES AND PREDATOR-PREY ECOSYSTEMS

Birth and death simulation, developed by Pielou, is a form of Markov stochastic process for describing the time evolution of populations. Applied to modelling the human element of a fishery, it expresses two features of fishing effort dynamics absent in systems of differential equations: (1) discreteness of events, such as a fishing trip or entry of a vessel into the fleet, and (2) demography stochasticity, expressed as randomness in the time occurrence of successive events. Birth and death simulation is based on randomly selecting the waiting time between events from a negative exponential distribution, derived under the assumption of Markov. Histograms from commercial landings data of waiting times between events of boats returning to port in a Nova Scotia fishery yielded good agreement with the predicted negative exponential. Algorithms are presented for stochastically modelling two processes: (1) catch and (2) the open-access hypothesis for changes in fleet size in response to changing levels of profit. The solutions qualitatively diverge from that predicted by differential equations: As the numbers of vessels and fish schools decline (i.e., as the system size scale shrinks), a birth and death formulation predicts increasing instability of the predator-prey cycle solution about the deterministically stable open-access equilibrium. Open-access models are a form of predator-prey model. In choosing the minimum wilderness preserve area needed to sustain a population of top predators, numbered in the low hundreds, a predator-prey model formulated with differential equations could underestimate instability and thus the risk of extinction, when the discreteness and randomness of predator-prey birth, death, and capture events is significant.     

THE STABILITY OF A REACTION-DIFFUSION LOTKA-VOLTERRA COMPETITIVE SYSTEM WITH NONLOCAL DELAYS AND FEEDBACK CONTROLS

In this paper, we consider a Lotka-Volterra competitive system with nonlocal delays and feedback controls. Using the Lyapunov functional and iterative technique method, we investigate the global stability and extinction of the system. Also, we show the influence of feedback controls on dynamic behaviors of the system. Some examples are presented to verify our main results.     

制度影响国际贸易成本竞争力的效应分析——基于国家间产权效度差异的视角

本文通过构建产权效度的影响效应模型、产权效度的优化模型和最优产权效度的贸易效应模型,分别对产权制度与出口竞争力的关系、最优产权效度的决定机制与影响效应进行了初步分析与论证,并对旨在提高产权效度的制度改革提出了相关建议.     

耗散对两个守恒律系统的影响

其中 A≥0,p'(v)<0,常出现于各种各样的应用数学问题中.例如一维不定常等熵流,非线性粘弹流中定常剪流的稳定性等问题.我们的问题是:方程(1.1)的柯西问题是否有大范围光滑解.Nishida 对这一问题进行了研究,他的结果表明,当初值条件     

ASYMPTOTIC PROPERTY FOR A LOTKA-VOLTERRA COMPETITIVE SYSTEM WITH DELAYS AND DISPERSION

An n-species nonautonomous Lotka-Volterra competition and diffusion model with time delays is investigated. It is shown that the system is uniformly persistent under some appropriate conditions, and by using the skill of constructing an appropriate Lyapunov function, the new sufficient conditions are obtained for the global asymptotic stability and the uniqueness of the positive periodic solution.