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51.
The implement of enterprise knowledge management gives rise to extensive research on its measurement. Based on the existing measurement theories and evaluation index systems of enterprise knowledge management during the past three years in China, this paper analyzes the problems in measuring target and designing the evaluation index system in the existing research findings, and explains detailedly why measurement target of enterprise knowledge management should be "level evaluation" instead of "performance evaluation", and definitely points out the meanings of enterprise knowledge management level and significance of its evaluation. This paper also indicates that the design of the evaluation index system should be complete, reasonable, proper and operable. 相似文献
52.
JIA Yan-yan 《保鲜与加工》2004,(2):106-109
In this paper, the problems of bringing natural resources and environmental condition into accounting are discussed and lay emphasis on object measurement, imaging and disclosure in accounting report of environmental accounting. The author suggests that the environmental accounting is the necessary production of global economy for sustainable development in modern society; it is also a new ecological accounting subject formed by the result of environmental economies and accounting penetrating into each other. As a contribution of accounting circles to sustainable development, environmental accounting has become a hot topic in recent years. 相似文献
53.
XU Zhong-ming~ 《保鲜与加工》2004,(10):25-28
It's recognized that Automobile Intelligent Transportation System (ITS) is the most effective method to solve the modern traffic problems. ITS is the direction 21st century traffic goes on. It will stimulate more environmental protection, more effective and safer traffic and transport. Electronic Map (EM) plays a very important role on ITS. And it influences the success of ITS directly. The basic conception of EM, functions of EM on ITS, the characteristics of EM in ITS and the ways to get the information of EM are introduced. 相似文献
54.
With the development of EHV/UHV DC transmission projects, it is inevitable to study DC pollution flashover performance of long insulator strings. The DC artificial pollution tests of five types of porcelain and glass insulators have been carried out in the artificial climate chamber. The paper analyzes the relationship between 50% flashover voltage U50 and string length, the relationship between U50 and salt deposit density, flashover voltage gradients and valid creepage distances of DC polluted insulators. Based on the test results of insulator strings of 5 - 23 units, there are linear relationship between the 50% DC flashover voltages and string length. The experimental results show that the pollution flashover performances of various types of insulators are different, and that the pollution degree exponents of polluted insulators are affected ainsulator materials and shapes, whose values are 0.3 to 0.36. Under the same pollution degree, the pollution performances of glass insulators have advantage of those of porcelain insulators with the same configuration and the flashover voltage gradient along creepage distance and valid creepage distances of glass insulators are higher than those of porcelain insulators. 相似文献
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种子含水率在线测量系统 总被引:5,自引:0,他引:5
根据种子含水率的测量要求,研制了一种可同时测量电容、质量和温度3个参量的装置和测量电路。该测量系统的机械装置由2个同心圆筒组成,内筒的旋转运动实现被测种子的动态喂料。采用抗寄生电容效应的开关电容电路测量上、下极板之间的电容;下极板同时也是称量平台;温度传感器测量种子的温度。3个测量值经A/D转换电路以数字量输出。分别用3个电路单独测量已知的电容、质量和温度,以及不同温度和相对湿度条件下对电容测量值的影响,并据此分析了各测量单元的精度、可靠性和可行性。 相似文献
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区域水资源可持续利用的未确知测 总被引:4,自引:0,他引:4
针对水资源系统是一个具有未确知性特征的复杂大系统。在未确知测度空间基础上,构建了区域水资源可持续利用评价的未确知测度模型,并将该模型应用于西安市水资源开发利用程度的评价。通过单指标未确知测度、多指标综合测度计算以及指标定权等过程,实现对各分区水资源开发利用程度的综合评价与排序。实例研究表明,运用未确知测度模型进行区域水资源可持续利用问题研究,理论上是可行的,评价结果是可信的,这为信息不确定条件下的区域水资源可持续利用评价提供了一种新方法。 相似文献