引信全电子安全系统失效分析及评估

本文根据全电子安全系统的一般结构模式,分析了其安全性设计的一般特点和可能造成其失效的各种原因,并在此基础上建立了全电子安全系统的失效故障树,给出了失效概率的定量计算结果。     

孤独的殉道者——析卡夫卡及其《饥饿艺术家》

《饥饿艺术家》是奥地利作家弗朗茨.卡夫卡创作的一部优秀短篇小说。它寓意深刻,描绘了一出弱者奋斗的悲剧——不仅是饥饿艺术家的悲剧,同时也是卡夫卡人生境遇的真实写照。     

Terrorism as Method in Nepali Maoist Insurgency, 1996–2016

During the period 1996–2006, the Communist Party of Nepal (Maoist) waged overt people’s war to seize state power and institute a new order that realized the party’s understanding of ‘New Democracy’ as posited by Mao Tse-tung. Contextual shifts led to a crucial strategic turning point in September 2005, when the Maoists agreed to a united front with estranged legal parties to oust the monarchy and establish a republic. Though touted as acceptance of political reintegration, the move was tactical rather than strategic. The party had no intention of supporting a parliamentary version of democracy and thus, 2006–2016, engaged in a covert effort to seize power. Central to this effort was the paramilitary Young Communist League (YCL), the members of which responded to inflammatory party verbiage and exhortations with attacks upon rival political actors. These attacks, academically and legally, were terrorism and offered a salient illustration of intra-state unrestricted warfare. Ultimately, organizational, national, and regional circumstances caused the main Maoist movement to move decisively away from its covert approach. By that time, however, radical splinters had embraced the use of terrorism against rival political actors, creating a situation whereby local politics is yet a dangerous endeavor in certain areas and at certain times.     

一种新的高分辨率ADC有效位数测试方法

谱分析法和正弦拟合法是ADC动态特性测试的两种常用方法。但在测试信号源信噪比较低的情况下,两种方法的测试结果都存在较大的偏差。提出了一种新的ADC动态性能测试方法,该方法能较好消除信号源对测量结果的影响,使得在普通信号源下可以测试高分辨率的ADC。仿真分析证明了这一测试方法的正确性。最后给出了采用该方法对一ADC系统的实测结果。     

A computation procedure for the exact solution of location-allocation problems with rectangular distances

A method is presented to locate and allocate p new facilities in relation to n existing facilities. Each of the n existing facilities has a requirement flow which must be supplied by the new facilities. Rectangular distances are assumed to exist between all facilities. The algorithm proceeds in two stages. In the first stage a set of all possible optimal new facility locations is determined by a set reduction algorithm. The resultant problem is shown to be equivalent to finding the p-median of a weighted connected graph. In the second stage the optimal locations and allocations are obtained by using a technique for solving the p-median problem.     

软件无线电的关键技术及其发展趋势

软件无线电技术近年来得到了较快发展,其主要是利用软件来实现无线通信系统中的各种功能。介绍了软件无线电的关键技术、评价标准和发展过程,并展望了软件无线电的发展前景。     

改善逆变器输出电压波形的研究

在115 V/400Hz逆变电源中,A/D转换器引起的量化误差对系统的影响是造成系统不稳定的主要因素之一.通过对逆变器反馈通道误差的分析,采用全波整流电路对115 V/400 Hz逆变电源中A/D采样电路进行了改进,减小反馈通道误差,使逆变器的稳态电压输出波形质量得到显著改善.     

火场中A3钢的晶粒度与燃烧时间和温度关系的研究

本文模拟典型火灾温度－时间曲线,对热轧成的Ａ３钢进行受热处理,测定在不同燃烧时间和温度下Ａ３钢的晶粒度,给出了Ａ３钢的晶粒度与燃烧时问和温度之间的定量关系,提出了通过测定Ａ３钢晶粒度的大小来鉴定火场中不同部位的燃烧时间和温度的科学方法     

组织设计方法研究：组织协作与效能

介绍了A2C2系列实验,并通过对A2C2实验1到实验5所采用组织结构、结构设计算法以及实验所获取的数据分析,重点研究了组织协作与组织效能的关系,在其实验结论(组织协作与效能关系的不确定性结论)的基础上对组织结构设计优化算法提出了改进思想。     

Multifunctional A356 alloy/ PKSAnp composites: Microstructure and mechanical properties

Mechanical properties and microstructure of multifunctional composites produced with palm kernel shell ash nanoparticle (PKSAnp)-A356 alloy composites was studied. The composites were produced using Double layer feeding stir casting method (DLF-SCM) by adding 1 wt%‒4 wt.% PKSAnp. The microstructure, density, electrical and mechanical properties were determined. The results shows that there was a uniform distribution of the PKSAnp in A356 alloy. The mismatch at the interface between the PKSAnp and A356 alloy was 4.26%. Improvement of 30.47%, 41.91%, 49.52%, 40.90% and 65.09% were obtained for hardness values, tensile, yield strength, %elongation and impact energy at 4 wt% PKASnp. The work has established that the developed composites can be used for multifunctional applications where combination of toughness and strength is vital.