Defense Spending Promotes Aggregate Output in the United States--Evidence from Cointegration Analysis

This paper provides new evidence on the question of the effects of defense spending on aggregate output in the United States. Earlier studies of this basic issue relied on traditional econometric techniques and the neoclassical production function theory. In this paper, recently developed cointegration methodology and modeling that is inspired by new macroeconomic theory is employed. The results from earlier studies concerning the effects of defense spending are mixed. The findings presented in this paper reveal that there is a quantitatively important and positive relation between defense spending and aggregate output in the United States.     

武警院校指挥类“合训”学员军事素质科学评价研究

针对武警部队第一批指挥类“合训”学员,选取部分“合训”学员的军事体能考核成绩,利用多元统计中的主成分分析方法,构造科学、客观的评价函数,对学员军事体能考核指标体系进行综合评价,并对每一名学员考核成绩排序,为武警部队“合训”学员教学、管理提供参考。     

基于排队论的协同防空的作战效能分析

舰艇编队协同防空作战成为未来海战的重要形式,运用排队论对舰艇编队协同防空的作战效能进行了研究。以排队理论为基础建立了舰艇编队协同防空的排队模型,运用理论分析得到了以整个编队毁伤目标概率为指标的防空效能。通过对防空效能的计算与仿真,分析了几个重要参数对防空效能的影响,为多层舰艇防空系统的设计与运用提供了理论支持。     

探索性分析在作战实验中的应用

现代作战系统特征复杂,采用当前的作战实验方法对作战运行规律进行分析研究时,层次较低、缺乏整体性、对作战行为指导意义不明显。针对此问题,结合探索性分析思想,提出一种基于探索性分析的作战实验方法,设计了方法的研究框架,给出了主要研究内容的关键技术解决方法。最后,进行了实例分析,结果表明,方法在作战方案优化方面能起到较好的效果。     

防空作战战场态势的定量化分析模型

在防空作战中,战场态势的分析非常重要,它是辅助决策的基础。针对战场态势的问题,以集对分析的同异反联系度为基础,构造了战场态势的分析模型,进行了深入探讨。最后,通过实例计算表明了分析模型对于评估战场态势的可行性和有效性。     

Fabrication and analysis of TIG welding-brazing butt joints of in-situ TiB2/7050 composite and TA2

Lightweight hybrid structures of Al MMCs and titanium alloy dissimilar materials have great prospect in the defence industry application. So, it is necessary to join Al MMCs with Ti metal to achieve this structural design. In this work, in-situ TiB2/7050 composite and TA2 were firstly attempted to join by TIG welding-brazing technique. The result was that the intact welding-brazing butt joint was successfully fabricated. The joint presents dual characteristics, being a brazing on TA2 side and a welding on TiB2/7050 side. At brazing joint side, ER4043 filler metal effectively wets on TA2 under TIG heating condition, and a continuous interfacial reaction layer with 1—3μm is formed at welded metal/TA2 interface. The whole interfacial reaction layers are composed of Ti(AlSi)3 intermetallic compounds (IMCs), but their morphologies at the different regions present obvious distinguishes. The microhardness of the reaction layers is as much as 141—190 HV. At welding joints side, the fusion zone appears the equixaed crystal structure, and the grain sizes are much smaller than those of welded metal, which is attributed to the effect of TiB2 particulates from the melted TiB2/7050 on acceleration formation and inhibiting growth for the new crystal nucleus. The tensile test results show that average tensile strength of the optimal welding-brazing joint is able to achieve 138 MPa. The failure of the tensile joint occurs by quasi-cleavage pattern, and the cracks initiate from the IMCs layer at the groove surface of TA2 and propagate into the welded metal.     

学生“隐性流失”的法律关系分析

因学校对学生及其家长施加种种压力而产生的学生“隐性流失”是“普九”中的普遍现象。“隐性流失”从法律关系的角度看 ,其实质是九年制义务教育法律关系中义务人对权利人接受并完成九年制义务教育权利实施侵害甚至剥夺的结果 ,是对我国教育法律规范侵犯的结果。从违法行为人主观方面看 ,“隐性流失”包含的违法有两种 :一是主观故意的违法 ,二是主观过失的违法。确保学校和政府的“义务人”法律地位 ,应该成为控制“隐性流失”的关键。     

双基地两坐标雷达空间目标定位算法

本文提出了双基地雷达单独使用发射／接收站（Ｔ／Ｒ站）的目标斜距和方位角信息或接收站（Ｒ站）的目标距离和方位角信息分别对空中目标的二维定位算法，并给出了定位精度的分析方法。最后，通过计算机仿真讨论了算法的定位性能。     

TDOA被动定位方法及精度分析

本文提出了一种利用多站ＴＤＯＡ信息对辐射源定位的非线性方程组求解方法，该方法简洁准确，无需作迭代运算，计算量小。文中给出了该定位方法的精度分析，最后给出了在具体布站条件下的受控区域内的ＧＤＯＰ分布。     

应用最大熵谱估计进行导弹系统的仿真模型验证

探讨了导弹系统仿真模型验证的定量方法。依据最大熵谱估计方法分辨力高的特点，分析其近似统计特性，分别给出了两个样本和两个正态总体的一致性检验方法。仿真结果表明，利用最大熵谱估计进行有效性检验是可行的。最后给出了一个应用实例，应用谱估计方法进行寻的制导导弹数字仿真模型验证