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71.
TAN Wen-an 《保鲜与加工》2004,(12):73-77
By analyzing the process of enterprise information engineering construction and intra relationship among information system requirement, business process modeling, application system constructing and project management, one of 4 meta model composed of requirement engineering, process engineering, application system engineering and support engineering is proposed for enterprise information engineering. The developments and applications of the business processes and its application systems are integrated into the same development space and application space. Basing on this, a prototype system composed of requirement modeling environment, business process modeling environment, application system modeling environment, and support engineering environment has been designed and built, which is used for supporting enterprise information engineering constructing. It is valued for the enterprise information engineering construction in our country. 相似文献
72.
During the implementation of Cleanroom Model, there are a lot of particular problems need to be resolved, which make it indispensable to grasp the essence and the principles of CRM. The article is on the essential research work in the design procedure of the Cleanroom technology. Through the analysis, it proposes a general architecture, based on which the entry point of the solving process and the distribution of the reducing procedure are introduced. 相似文献
73.
TAN Jian-chun 《保鲜与加工》2004,(8):156-159
The output of the enterprise changes with the change of natural states, therefore it brings relatively great risk to enterprise. The enterprise hopes to reduce the same kind of risk through more contracts than one kind of contract of risk sharing. This paper presents a new method to disperse the same kind of risk in two kinds of ways. Basing on principal-agent theory, through the optimum contract of risk sharing, the Pareto-optimum solving is solved-the optimum contract of risk sharing. The employee shares some risks through the optimum contract of risk sharing between the enterprise and the employee-when the output is high, the employee's income increases; when the output is low, the income decreases. In order to reduce the risk of the enterprise further, the dealer also shares the risk. To maximize the utility of the enterprise, the Pareto optimum solving is given-another optimum contract of risk. The dealer offers following contract of risk sharing to the enterprise-when the output is high, the dealer receives the repayment; when the output is low, the enterprise is compensated. The enterprise, the employee and the dealer share the risk together, thus the risk of the enterprise is reduced to relatively great degree. 相似文献
74.
TAN Jun Yu 《保鲜与加工》2001,(5):145-148
A class of analytic solution for RLW Burgers equation and KdV Burgers equation are given which include results of some papers.These solutions can be expressed as some linear combination of solutions of Burgers equation and RLW equation or KdV equation which correct conclusion in some paper. 相似文献
75.
According to the investigations of urban barrier free facilities, there have been lots of progresses in constructions of barrier free in cities recently. But there are no systematic barrier free facilities in these cities, which would restrict the function and effect of urban barrier free facilities for the handicapped and the elder. This paper puts forward that there should be a development from the urban barrier free facilities to the urban barrier free environment. There are two parts in the barrier free environment,that is the hardy environment and soft environment. Finally,an in-series connection two-core model of barrier free environment has been designed and discussed. 相似文献
76.
为了解涡流室式煤层气发动机的工作特性和排放规律,在不同负荷下,进行了燃用三种不同甲烷浓度的煤层气试验。试验结果显示:涡流室式燃烧系统能稳定燃烧甲烷浓度变化剧烈的煤层气;相同工况下,发动机的缸内峰值压力随甲烷浓度的降低而增加,但压力升高率的变化很小;甲烷浓度达到一定值时,甲烷浓度和负荷对主燃期的影响很小;煤层气发动机的CO和HC排放随甲烷浓度和负荷的增加而降低,NOx排放则相反。 相似文献
77.
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79.
区域物流规模发展预测方法研究 总被引:1,自引:0,他引:1
区域物流是全国乃至国际物流系统的重要组成部分,对区域经济的发展具有服务引导作用。本文对我国物流发展进行了分析,对灰色预测模型GM(1,1)的建模过程进行了研究,用已预测值和GM(1,1)原始序列一起做精度检验,根据未来数据的变化,设计了改进型的灰色预测模型,并结合实例进行了应用研究,得出了更接近实际的预测结果。通过误差检验,改进模型具有较高的预测精度,是一种非常实用的预测方法。 相似文献
80.
提出了一种新型的变频恒压供水系统,在该系统中采用了模糊比例、积分、微分(模糊PID)控制,通过模糊控制器浮动迁移受控对象的设定值,并把迁移后的设定值引入到PID运算中,使系统既有模糊控制器的优点,又具有PID调节器的特点。 相似文献