A Low Power Error Detection in the Syndrome Calculator Block for Reed-Solomon Codes: RS(204,188)

Reed-Solomon (RS) codes have been widely adopted in many modern communication systems. This paper describes a new method for error detection in the syndrome calculator block of RS decoders. The main feature of this method is to prove that it is possible to compute only a few syndrome coeffi-cients — less than half — to detect whether the codeword is correct. The theoretical estimate of the prob-ability that the new algorithm failed is shown to depend on the number of syndrome coefficients computed. The algo...     

管道补口用环氧底漆阴极剥离影响因素的正交分析

将正交思想引入涂层阴极剥离的研究中,通过正交试验的设计及对数据的分析处理,得到各因素对阴极剥离的影响从大到小依次为体系温度、反应时间和极间电压。为检测工作在试件制备和操作细节方面提供了技术依据,也为相关标准的制、修订提供了理论支持和数据基础。     

真空管吸收涂层的吸收比对全玻璃真空管的热性能影响的试验分析

选择性吸收涂层是全玻璃真空太阳集热管的重要组成部分，其光学性能直接影响着全玻璃真空太阳集热管的热性能。衡量选择性吸收涂层的最主要参数是涂层光学吸收比，而代表全玻璃真空太阳集热管热性能的参数主要是空晒性能参数及闷晒太阳辐照量。文章通过试验研究了涂层的吸收比对全玻璃真空太阳集热管的空晒性能参数和闷晒太阳辐照量的影响。结果表明全玻璃真空太阳集热管涂层吸收比对闷晒太阳辐照量有明显影响，对空晒性能参数也有影响但不明显。     

品牌专卖三级供应链收益共享契约协调优化模型

研究了市场需求不确定且与零售价格相关条件下,品牌专卖三级供应链中的收益共享契约协调模型,并以使供应链达到利润最大化为目标对模型进行了优化,给出了最优解组合。通过分析得出要使得供应链达到协调,批发价格和收益共享比例需满足特定的线性关系式,制造商和分销商要保证货源充足。数值计算和仿真分析证明,契约参数变化对供应链及其成员利润是有影响的。     

基于Windows系统建立Vmwar虚拟机

虚拟机可以在一台物理计算机上模拟出一台或多台虚拟的计算机。在这个虚拟机上，可以安装Windows、Linux等真实的操作系统，及各种应用程序。本文通过应用Vmwar软件来建立虚拟机，介绍了基于Windows系统建立虚拟机的方法。     

天使和怪兽的领导力

这不是在开玩笑,Lady Gaga和特丽莎修女是领导力的两个最新标签。当然,两位女士有着很明显的差异。Lady Gaga这位流行巨星的一套套奇装异服,一天内换几次或者一个演唱会里换20次的癖好,可能会让特丽莎修女觉得太奢侈了。     

Influence of Node Dynamics on Cluster Global Time Continuity

The cluster global time can change in wireless sensor networks due to leader re-elections and node disabilities between two successive synchronizations,which will affect temporal relationships.This paper analyzes cluster global time continuity,using global time change models for the node dynamics.The results prove that defining the global time using the cluster average time(AGT) is more stable than defining it using a single node’s local time(SGT).With normally distributed clock-parameter assumptions,the AGT change bounds are at most 70.7% of those for the SGT’s.The impacts of the initial phase and frequency skew distributions on the global time continuity are also investigated to show that the initial phase variations may strongly influence the continuity.Simulations show that the AGT is more stable with less disabled nodes or larger clusters.The appropriate cluster size is 20-40 when there are less than 15 disabled nodes.     

66千伏送电线路防雷措施的探讨

输电线路的雷击不仅带来经济损失,造成大面积停电,甚至危及生命安全。文章以工业常用的66KV输电线路为例,从架设避雷线、装设自动合闸装置、加强线路绝缘和降低塔地电阻四个方面防止输电线路雷击的具体措施。并分析了架空输电线中防雷装置的运行与维护与管理,以确保电网安全运行。