共查询到20条相似文献,搜索用时 125 毫秒
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IEC(国际电工委员会)/CISPR(国际无线电干扰特别委员会)2003年11月发布了重组后的CISPR16(无线电骚扰和抗扰度测量设备和方法规范》(Specification for radio distur-bance and immunity measuring apparatus and methods)系列标准。该系列标准目前包括以下14个子标准,它们取代以前出版的CISPR16-1、CISPR16-2、CISPR16-3、CISPR16-4及其各修正案。 第一部分:无线电骚扰和抗扰度测量设备(Radio distur-bance and immunity measuring apparatus) CISPR 16-1-1:测量设备(Measuring apparatus) 相似文献
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CISPR 14—1是家用电器、电动工具及类似器具EMC测试的重要依据,其最新修订件A 1:2008较CISPR 14-1Ed.5.0有重大的修订。详细介绍了此新标准的特点,分析了新标准变化对测试的影响及新标准应用的注意事项。 相似文献
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以CISPR 14-1:2005为基础,与欧盟的EN 55014-1:2000 A1 A2相比较,找出其中主要差异以及差异导致的测试方法的改变,为测试机构和生产企业的产品测试和设计提供参考. 相似文献
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The article describes a model representation of radar probing data in form of a mixture of background and target samples, which is the sum of two random variables with very different parameters. For model development we research the behavior of the central moments of the distribution mix without assuming the distribution law form. An example it is described the detection of the signal at the output of compression system of chirp ionosonde. 相似文献
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解决IP网QoS问题是目前通信领域的研究热点之一.虽然研究已经取得了一定的进展,但人们对于IP 网QoS本身的含义及相关的问题还有着不同的理解.本文将从IP网QoS的定义入手讨论相关的一些问题以及解决IP网QoS问题所做的各种努力. 相似文献
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《Proceedings of the IEEE. Institute of Electrical and Electronics Engineers》1968,56(6):1024-1032
Assuming that visual responses are due to the action of particles on the membrane of the visual cells, the stochastic variability of the response should be a function of the number of particles producing it. Quantitative predictions can be made with the aid of a model proposed in previous articles. It is found that responses produced in visual cells of Limulus by absorption of a single photon have the stochastic properties which would be expected if the response to one photon were brought about by 25 particles. It is concluded from this that the processes leading to visual responses produce multiplication of particles. The effects of temperature and of metabolic poisons suggest that these processes are of chemical nature. 相似文献
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罗晓羽 《信息技术与标准化》2008,(6):37-39
论述了推进电子行业标准制修订项目计划管理信息化的必要性.并提出了具体措施;详细介绍了电子行业标准制修订项目计划管理数据库的设计思路和实现方法.阐述了对后续工作的几点思考. 相似文献
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对影响镍镀层内应力的因素做了介绍和分析,提出了对收缩应力的一种解释,提供了排除这些因素影响的方法,指出重视镀液的管理是减少各种影响内应力因素的主要办法。 相似文献
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A. M. Emel’yanov 《Semiconductors》2010,44(9):1134-1139
A method for analyzing the luminescence spectra of semiconductors is suggested. The method is based on differentiation of
the spectra. The potentialities of the method are demonstrated for luminescence in the region of the fundamental absorption
edge of Si and SiGe alloy single crystals. The method is superior in accuracy to previously known luminescence methods of
determining the band gap of indirect-gap semiconductors and practically insensitive to different conditions of outputting
radiation from the sample. 相似文献
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“计算机组成原理”设计性实践教学模式研究 总被引:1,自引:0,他引:1
本文阐述了"计算机组成原理"设计性实验教学的重要性,对设计性实验教学的目的和基本特征进行了归纳,对"计算机组成原理"设计性实验教学的现状进行了调查,对存在的问题进行了较深入的分析;在此基础上.对组成原理设计性实验的教学模式进行了研究,对设计性实验的体系进行了初步设计,并对"计算机组成原理"设计性实验的实施方法进行了探讨. 相似文献