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61.
This paper points out the shortcoming of the existing project break-even analysis method. A new improved method-the dynamic project break-even analysis method has been put forward. 相似文献
62.
The relationship of investors and venture capitalists is an important part in venture capital. Based on asymmetric information, this paper analyzes the principal agent relationship between investors and venture capitalists with game theory. And this paper mainly discusses the choosing, controlling and incentive problem. It suggests that only the capable and self confident venture capitalists could accept the terms of the limited partnership. It also indicates that recompense mechanism which holds the interest of investors and that of venture capitalists tightly is the center of the limited partnership. Rate of yield is the key of recompense mechanism, it not only reflects the incentive on venture capitalists, also reflects the share of risk between investors and venture capitalists. At last, the market credit play an important role in venture capital. 相似文献
63.
64.
In system controlled,Sampling these parameters and with parameters for controller in time, it is an object to adaptive control. The article presents a scheme that the structure parameters on it's model and model parameters is robust identified by on line, while to optimal of algorithm on adaptive control is fulfilled. In control scheme, method of intelligent identifying to the structure parameters(levels of model) and algorithm of robust pole placement are introduced also It is advancer for already mentioned scheme. Whole scheme presents new model on adaptive control. 相似文献
65.
The effective competition is an effective organizational form of the industry in modem market economy. It is a form accompanied with large - scale production and vigor competition. The analysis of effective competition has been the focus that people have paid close attention to it very much all the time. It is a basis of industrial policy, on the basis of the former research, the aufhors bring out 9 indexes according to the actual situation of our country, then take automobile trade as an example, we analyze the automobile trade with principal component. 相似文献
66.
In this paper,the electrical field distribution along the polluted cylindrical insu-lator before a nd after the local a re appea rs is calculated with the optim lzed pa rtially cha rge simula-tinn method and measured with the pockels device. Based on the calculating and measuring results,the in fluen ce of the electric field distri bu tion on the propagation of local a re in the flashover ofcyIlndrical insufator under various conditions is analyzed systematieally. 相似文献
67.
Wang Xueqin Su Yugang 《保鲜与加工》1992,(1):100-107
According to the principle that the orbit of stator current vector in complerplane should be as close to a circle as possible, the PWM control pattern is derived and determined. The control method is realized by using a micro-computer. 相似文献
68.
运用CAE技术进行某微型客车车架结构的分析与优化设计 总被引:1,自引:0,他引:1
运用CAE技术对某微型客车车架进行了结构分析与优化设计,首先,计算了静力挠度,静态弯曲、扭转刚度,然后求解了固有模态,并在此基础上获得典型道路激励下的瞬态响应,此外,还对车架典型薄壁梁结构的耐撞性吸能特性进行研究,配合实验数据,对车架结构进行了合理的改进设计,实现了满足轻量化要求的静态优化设计目标,彰显CAE技术在汽车研发过程中的作用日益重要。 相似文献
69.
多点成形法是针对多品种、小批量的三维曲面板材成形的一种柔性加工法。采用这种方法可替代传统的模具,从而节省模具制造费用。本文介绍了有关这一加工方法的基本原理并在自制的简单多点试验机上进行了一系列试验,对4种不同的多点成形法的成形效果进行了讨论。 相似文献
70.