DC/DC电源中的电磁干扰及其对策

概述了电磁干扰(EMI)和电磁兼容(EMC)的基本知识，对DC／DC电源中的电磁干扰进行了综合分析，并给出了各自的解决方案。     

一种改进Parlay API增强呼叫等待保持能力的方法

通过对呼叫等待业务实例的深入分析得出Parlay API4．0规范缺乏呼叫等待保持能力，提出了一种修订终端呼叫腿状态机和增加功能接口的方法，该方法可以在保持Parlay API后向兼容性和不改变呼叫控制模型的同时增强呼叫等待保持能力，最后给出一个基于改进了的Parlay API的呼叫等待业务实例流程。     

Agronomic and environmental effects of land application of residues in short-rotation tree plantations: A literature review

Land application of residues in short-rotation plantation has a priori the double advantage to meet the nutrient needs of these tree plantations at lower cost while recycling residues. Agronomic and environmental effects of a very wide variety of residues on plants and soils have been studied worldwide. I attempt here to compile and to summarize the results of the studies about the effects of land applications of residues (mostly organic) in plantations or under controlled pot conditions of the three species mostly used for short-rotation coppice: willow, poplar, and eucalyptus. The spreading of most residues causes an enrichment of the soil in nutrients and a subsequent increase in the growth of plants. Manure, compost, sewage sludge, and wastewater seem most effective in stimulating growth. Ashes have less impact on growth. Few negative effects on the plant have been highlighted in response to spreading, except in the case of very rich effluents in salt in response to which growth reduction and leaf loss nevertheless did not lead to plant death. The high transpiration potentials of the fast growing species dedicated to intensive tree plantations allow them to absorb and tolerate, without major damages, nutrients in excess, most heavy metals, and antibiotics. In some cases, heavy metal accumulation in soils following the spreading of residues, but few of them showed leaching or water pollution. Nevertheless, the used doses and the intervals between applications were of primary importance to avoid leakage of undesirable elements in the environment.     

TD-LTE现网电磁兼容EMC测试装置的研发及应用

TD-LTE多频应用已成为一种趋势,但同时也带来了多种干扰问题,本文就EMC电磁兼容问题展开研究和分析,对干扰的规避提出了相关的建议。     

NSST域模糊逻辑的红外与可见光图像融合

为了在红外与可见光图像融合时保留各自更多的细节信息,同时降低算法复杂度,采用了非下采样剪切波变换（NSST）和改进模糊逻辑的红外与可见光图像融合方法,利用NSST算法对红外图像和可见光图像分别进行多尺度、多方向稀疏分解,分别得到低频子带系数和高频子带系数。然后对低频子带系数采用基于改进的模糊柯西隶属函数的权值平均融合规则;对高频子带系数采用能量匹配度和视觉敏感度系数相结合的融合规则。最后对低频子带融合系数和高频子带融合系数执行NSST逆变换得到最终的融合图像,并进行了理论分析和实验验证。结果表明,此融合方法不仅可以保证融合清晰度,对缩短算法的运行时间也是有帮助的。     

手机电磁兼容测试常见问题分析及相关性能改进

针对手机电磁兼容测试中经常出现的问题,包括静电放电抗扰度试验、电快速瞬变脉冲群抗扰度试验、辐射骚扰及传导骚扰性能测试中经常发现的问题进行了分析,并提出了相应的改善手机电磁兼容性能的建议。     

地铁车地无线通信系统电磁兼容研究

地铁在城市交通出行中扮演重要角色,但近年来电磁干扰影响地铁安全营运事故时有发生。为分析机动车和电气化铁路对车地无线通信系统的电磁干扰,从电磁兼容三要素出发,结合实验测试论证了某地地铁车地系统在开放空间及近距离条件下对机动车和电气化铁路具有较好的电磁兼容性,并针对测试过程中所出现的电磁兼容隐患提出了建议。     

散热器的电磁辐射与散热设计

介绍了散热器加强芯片电磁辐射的原理,运用精确的仿真技术,通过改变散热器的结构参数,找到了影响电磁辐射和散热的关键结构因素,并由此选择或设计出同时满足散热要求和电磁辐射标准的散热器.     

信息技术设备的EMC要求

本文从认证方式,测试标准,测试项目,测试限值,符合性标签的使用等方面叙述了美国、加拿大、欧盟、澳洲和新西兰对信息技术设备的EMC要求.     

“电磁兼容技术”课程案例导入式教学实践

＂电磁兼容技术＂是理论性和工程实践性均较强的一门课程。针对传统教学模式存在的问题,笔者结合自己的科研经验开展了案例导入式教学法的尝试,依据教学进度,精心选择案例,让学生参与进来,从而实现了理论和实践相结合,取得了良好的教学效果。