基于突变理论综合评价的房地产投资环境方案优选

基于突变理论 ,对房地产投资环境综合评价及投资环境方案优选问题进行了探讨。实例表明 ,利用突变理论综合评价方法 ,进行房地产投资环境方案优选是合理的、可行的。     

突变理论在作战体系结构稳定性分析中的应用

提出作战体系结构主导度、协同度、破击度的概念及量化方法。将作战体系结构所处的状态分为稳定状态、混乱状态、崩溃状态，并以作战体系结构所处的状态为状态变量，崩溃状态对应于状态变量的最小值，混乱状态对应于状态变量的中间值，稳定状态对应于状态变量的最大值。以主导度、协同度、破击度为控制变量，建立燕尾突变分析模型，并进行实例分析。该方法为定量研究非对称作战的有效性问题提供了一种新思路。     

A catastrophe model of construction conflict behavior

Buildings are part of the built environment in which many activities are performed. One of the critical part of a development process is the physical construction of the proposed facility. As such an efficient construction process is invaluable. Moreover, due to the inherent divergence in interest, conflict among the contracting parties appears inevitable. Escalating conflict level may turn into psychological struggles between the contracting parties and manifests as dispute. The unfortunate outcomes are loss of productivity and increase in cost of construction. This paper describes the dynamic change in construction conflict behavior based on the catastrophe theory. How conflict behavior is affected by conflict level is first discussed. As such a catastrophe model of construction conflict behavior with tension level, behavioral flexibility as control variables is proposed. It is suggested that conflict is positively correlated to the tension level among the project team and subject to the moderating effect of the behavioral flexibility displayed by the project team members. The model suggests a sudden jump in conflict level will occur when tension reaches a threshold. Once this happens the conflict level will not subside even the tension level returns to the threshold just reached. The proposed model was tested by an empirical study that affirms: (1) The appropriateness of the use of tension and behavioral flexibility as control variables; (2) catastrophe model is a better fit to describe construction conflict behavior than the linear and logistic model; and (3) the bimodal nature of construction conflict behavior. The model reinforces the conventional wisdom of ‘prevention is better than cure’ as far as construction conflict resolution is concerned.     

白洋淀水生态系统危机及其预警

通过在分析白洋淀水生态系统的构成与特点的基础上,应用突变理论对白洋淀水生态系统在水量与水质两个控制变量作用下的变化进行了研究,阐述了白洋淀水生态系统状态变化的规律。根据这种规律可以对白洋淀的水危机进行预警。     

通用突变控制方法及其在潜艇中的应用

运用非线性动力学和突变理论,研究了高维系统建立具有理想特性突变的控制方法.引入冲失滤波器保证系统平衡点不变,并利用隐式判据、中心流形定理以及规范形法确定控制增益.以潜艇空间运动为例,阐述计算的全过程.该控制方法简便、快捷,可广泛应用到实际控制系统的设计中.     

灰色理论在设备维护方面的应用

根据灰色理论中的灾变预测，对发电厂中设备的故障日期作了预测，从而为实现设备从计划检修向状态检修提供了依据。     

制造过程加工误差流及其模型的研究

为适应现代制造系统加工过程质量的监视、控制和质量保障技术的发展,引入了“加工误差流”的概念。基于迭代映射和突变论构造了两类加工误差流动态模型,提出了加工误差控制的原理、策略和方法。同时,还介绍了利用最小二乘法回归多工序加工误差以及利用神经网络预报的验证结果     

Discontinuity, decision and conflict

Summary The motivation for this paper arises out of the authors experiences in modelling real decision makers where the decisions show not only a continuous response to a continuously changing environment but also sudden or discontinuous changes. The theoretical basis involves a parametric characterisation of the environment, a decision makers perception of it in terms of a twice differentiable Distribution Function and a bounded Loss Function. Under a specified, minimizing dynamic, the resultant Expected Loss Function satisfies the conditions for a potential function and Thoms Catastrophe Classification Theorem may be used to assess the singularity points and the thresholds at which jump decisions are taken. The paper describes the theory, summarises some results on unimodal distributions illustrated by jump decisions and population polarisation. Mixture distributions are then examined and the E^* models defined. These are then briefly illustrated by reference to models which have been constructed in relation to Prison Riots, Agricultural and Economic modelling.     

基于脆性势函数对复杂系统的脆性分析

本文主要是针对于存在于复杂系统中的脆性问题进行分析，给出了有关脆性问题方面的有关定义，在进行分析的过程中，我们采用的是突变理论的势函数来进行复杂系统的脆性分析的，此种方法是本文首次提出的，具有新颖性与创新性。