苏俄国内战争期间日本干涉西伯利亚问题初探

俄国十月革命后国内战争期间,协约国利用各种手段对苏俄实行经济封锁和武装干涉。在远东,日本对西伯利亚的觊觎和军事行动成为当时远东地区国际关系的焦点之一。在西伯利亚军事干涉问题上,日本国内外各政治力量对此态度不一,矛盾重重。最终,在国内外多种力量的作用下,日本的干涉以流产而告结束。     

基于AHP和集对分析的自适应伪装系统综合评级

为了全面评价自适应伪装系统的综合性能,提出了集对分析法的3级模型,并构建各层级指标的联系度算法和综合置信度的等级确定方法。从技术指标、勤务指标、环境指标和维护指标4个方面细化了2个层级的指标体系,并提出各指标归一化方法。依据自适应伪装系统适应背景的实时性提出划分准则,构建各指标等级区间。运用层次分析法（analytic hierarchy process,AHP）得到2个层级指标的权重。提供的算例验证了方法的可行性和有效性,能够为自适应伪装系统的应用定位提供参考。     

“中西仓库”：中情局第三基地曝光

“戏剧性的是,在过去的几十年间,我们所看到的伊斯兰极端分子到处挥舞的AK-47步枪和RPG-7火箭筒,不知有多少是从‘中西仓库’流出去的。”     

美海军推出直升机部队重组计划

为进一步增强舰载直升机部队的战斗力,美国海军最近制订了重组其舰载直升机队伍的计划。这份由美海军作战部长办公室起草并计划在未来12年内付诸实施的名为“直升机部队发展总计划”(HelicopterMasterPlan)的方案目标是将其舰载直升机中队的数量从目前的25个增加到31个,但舰载直升机中队的类型却从现有的三种减少到两种。根据“直升机部队发展总计划”的要求,美海军直升机部队兵力结构将实行完全重组,新组建直升机海上战斗中队HSC,主要担负诸如后勤保障、扫雷以及作战搜寻和救援等任务。新组建直升机海上打击中队HSM其首要任务是发动反…     

努力促进改制政策落实和民主程序到位--浅谈军工企业改制中的工会作用

军工企业改制过程中,工会组织如何充分发挥作用,维护职工的合法权益、保障改制工作的规范运作?带着上述问题,中国国防邮电工会对军工改制企业的工会工作和民主管理情况进行了调研。 我们调研中的体会是:工会组织推进改制工作的重点是促进改制政策的落实和民主程序的到位。当前,虽然有关企业改制和职工安置的政策文件在操作性上还有待完善,但相关的制度支持已比较充分。应该说,只要政策落实、民主程序到位,职工的合法利益就能得到维护。 为了切实维护改制企业的职工权益,保障改制     

重锤夯实 形象工程——辽宁省军区开展打击假冒军人军车活动纪实

“五一”长假里,当人们尽情享受着节日的快乐时,辽宁省军区各警备司令部的警备纠察人员却仍然战斗在工作岗位上,为履行警备职能而忙碌着。     

筛箩编织致富曲

现在他成立了公司,公司有股份305户,他定期进行技术培训,使农户掌握了压花机、编织机、拔丝机性能、操作方法、维修技术等,从而保证了产品的质量。对缺少资金的农户,他大力支持,累计垫付扶持资金40万元。村民王凤革,     

Noise and vibration measurements in a Viking military vehicle

Noise and whole-body vibration measurements were made in a Viking military vehicle to determine the variation that should be expected during repeat measures, the effect of speed (up to 60 km/h in 5 km/h increments), and during travel over different types of terrain (comprising concrete road, gravel track and rough cross-country). Measurements were made at various crew positions (including the driver and commander) in both the front and the rear cabs in the vehicles. Three translational axes of vibration were measured in each seat. Two speeds were investigated over road (35 km/h and 55–60 km/h) and gravel (20 km/h and 35 km/h) surfaces. The effect of varying speed of the vehicle on the measured noise and vibration magnitudes was also investigated. The highest sound pressure level (L_Aeq) of 104 dB(A) was measured at the commander’s standing position during travel over concrete road at 55 km/h. Higher noise levels occurred for a standing commander compared with when sitting on the seat. A maximum single axis frequency-weighted vibration magnitude of 1.0 m/s² r.m.s. was measured on the driver’s seat during travel over track at 35 km/h. Higher vibration magnitudes occurred during travel over track compared with travel over road. Both noise and vibration exposure of crew within the Viking vehicle increased with increasing speed of the vehicle.     

Influence of porosity distribution on nonlinear free vibration and transient responses of porous functionally graded skew plates

This article deals with the investigation of the effects of porosity distributions on nonlinear free vibration and transient analysis of porous functionally graded skew (PFGS) plates. The effective material properties of the PFGS plates are obtained from the modified power-law equations in which gradation varies through the thickness of the PFGS plate. A nonlinear finite element (FE) formulation for the overall PFGS plate is derived by adopting first-order shear deformation theory (FSDT) in conjunction with von Karman’s nonlinear strain displacement relations. The governing equations of the PFGS plate are derived using the principle of virtual work. The direct iterative method and Newmark’s integration technique are espoused to solve nonlinear mathematical relations. The influences of the porosity distributions and porosity parameter indices on the nonlinear frequency responses of the PFGS plate for different skew angles are studied in various parameters. The effects of volume fraction grading index and skew angle on the plate’s nonlinear dynamic responses for various porosity distributions are illustrated in detail.