试论经济力量向军事力量的转化

国家经济力量是军事力量的唯一源泉,军队的战斗力大小是军事力量强弱的重要标志,提高战斗力是军队一切工作的核心。但是,经济力量并不等于就是军事力量和战斗力,要把经济力量变为军队的战斗力还要经过一系列的转化过程。其整个转化过程可分为三个步骤,即经济力量向保障力量要素的转化;保障力量要素向保障能力的转化;保障能力向战斗力的转化。认真研究这些转化过程和转化环节,掌握其转化途径、方法和转化机制,对于促进和加快转化速度,提高转化效率和军队战斗力,具有十分重要的现实意义,是加强质量建军,实现两个根本转变和做好军事斗争准备的关键。     

硅整流无刷发电机供电系统动态性能的研究

分析了坦克的供电系统中采用硅整流无刷发电机时的工作特点,建立了这种系统的数学模型,举例说明了计算方法,并在文章的最后进行了评价.     

船用核动力装置可靠性与安全性分析的关系探讨

以船用核动力装置为对象,探讨其可靠性与安全性分析的发展及现状,对二者关系进行分析,从概念、方法和工程背景角度提出作者的观点.     

高功率微波对YBCO超导材料的改性

用固相反应法制备了123相YBCO超导块材。利用超导电性（Tc）测量、扫描电镜（SEM）等方法研究了高功率微波加载及退火处理对YBCO样品的影响。电阻－温度关系曲线表明,处理后的样品在超导起始转变温度Tco≈90K处由半导体型向超导转变,超导转变宽度△T增大。SEM结果显示,晶粒大大细化。作者认为,由于高功率微波对样品的瞬时高压作用,在样品中引入了阻碍磁通蠕动的钉扎中心,同时,退火处理改善了晶粒之间的弱连接,为提高临界电流密度Jc创造了条件。     

反应堆轴向功率不均匀系数快速算法

本文提出了用于反应堆运行现场安全校核的反应堆轴向功率不均匀系数的快速算法,导出了轴向功率不均匀系数的快速计算式。     

语言评价信息的武器系统模糊积分评估

传统的武器系统评估方法是基于概率和统计理论的,并假设各指标之间相互独立.然而,实际上武器系统指标的评价具有人为主观性和模糊性,并且各指标之间通常存在着依存关系.综合评述和对比了传统武器系统评估方法的适用范围以及不同方法的优劣,指出了它们的不足,提出了一种基于语言评价信息和模糊积分的武器系统评估方法.专家的评判结果是可用梯形模糊数描述的自然语言信息.     

相控阵天线关键技术发展趋势

相控阵天线必然朝着降低成本和提高性能的趋势发展,因此从以下几个方面分析其关键技术的发展方向:增加带宽,提高T/R组件的附加功率效率,移相器技术,数字化电路,以及引入稀布阵技术等。对相控阵技术的需求也是对这些相关技术发展的一种重要的推动力。     

雷达实际平面探测威力模型与仿真算法研究

在考虑地物遮蔽的情况下,建立了3种程式雷达实际平面探测威力的数学模型,并对参数获取、盲区估算等问题进行了讨论。给出了一种基于DEM数据的雷达实际平面探测威力实用算法,实现了雷达在任意高度层的实际平面探测威力的自动仿真生成。应用表明,雷达实际平面探测威力图绘制的精度和效率较传统方法有较大提高。     

Choosing arrival process models for service systems: Tests of a nonhomogeneous Poisson process

Service systems such as call centers and hospital emergency rooms typically have strongly time‐varying arrival rates. Thus, a nonhomogeneous Poisson process (NHPP) is a natural model for the arrival process in a queueing model for performance analysis. Nevertheless, it is important to perform statistical tests with service system data to confirm that an NHPP is actually appropriate, as emphasized by Brown et al. [8]. They suggested a specific statistical test based on the Kolmogorov–Smirnov (KS) statistic after exploiting the conditional‐uniform (CU) property to transform the NHPP into a sequence of i.i.d. random variables uniformly distributed on [0,1] and then performing a logarithmic transformation of the data. We investigate why it is important to perform the final data transformation and consider what form it should take. We conduct extensive simulation experiments to study the power of these alternative statistical tests. We conclude that the general approach of Brown et al. [8] is excellent, but that an alternative data transformation proposed by Lewis [22], drawing upon Durbin [10], produces a test of an NHPP test with consistently greater power. We also conclude that the KS test after the CU transformation, without any additional data transformation, tends to be best to test against alternative hypotheses that primarily differ from an NHPP only through stochastic and time dependence. © 2014 Wiley Periodicals, Inc. Naval Research Logistics 61: 66–90, 2014     

Power series expansions for the distribution and mean value function of a geometric process with Weibull interarrival times

The geometric process is considered when the distribution of the first interarrival time is assumed to be Weibull. Its one‐dimensional probability distribution is derived as a power series expansion of the convolution of the Weibull distributions. Further, the mean value function is expanded into a power series using an integral equation. © 2014 Wiley Periodicals, Inc. Naval Research Logistics, 61: 599–603, 2014