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111.
在对杜佩定量判断模型(QJM)进行改进的基础上,提出了一种单舰作战效能的整体评估方法.通过判断矩阵考虑进了经典的杜佩指数法不能描述的"软"因素,然后利用特征向量求得各自权重,最后根据权重确定各部分战斗指数.本法极具针对性与说服性,是一种新型的部队战斗效能量化评估手段,对简单军事系统的效能评估工作有一定借鉴意义. 相似文献
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《防务技术》2020,16(6):1098-1105
Due to notable characteristics, sustainability concept and environmental issues, hybridisation natural with synthetic fibres to fabricate composites have been rapidly gaining market share in different applications (structural, military, aerospace and automotive vehicles). Compression, tension and fatigue tests of various stacking sequences of plain jute/carbon reinforced (PVB) polyvinyl butyral by hot hydraulic press technique were experimentally conducted. Six types of fabricated composites with various constituents (jute, carbon and their hybrids) were fabricated and tested. Notably, fatigue lifetime of hybrids increases with increasing the carbon content relative to the jute fibre content. On the other hand, Jute composites possess high strain compared to pure carbon composite, which gives an overall improvement in mechanical behaviours. Interestingly, H1 hybrid with Carbon/Jute/Carbon sequences offers similar fatigue stiffness behaviour of H3 hybrid with Carbon/Jute/Carbon/Jute sequences when subjected to cyclic loading. Carbon composite (C) exhibited the highest fatigue resistance, whiles jute composite (J) possessed the highest strain and semi brittle trends in both mechanical and fatigue performance. Results concluded that plain jute fibres could partially replace high-cost synthetic carbon fibres to produce more eco-friendly hybrids to be utilised in different composites industries. 相似文献
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基于遗传算法的目标分配优化模型研究 总被引:2,自引:0,他引:2
结合现代防空作战的特点,给出了现代防空作战的目标分配模型,利用遗传算法给出了模型求解的方法及步骤;实践证明该方法解题速度快,结果的精度高,可以为决策者作出科学、准确的决策提供有力支持。 相似文献
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Julian Bennett 《Arms and Armour》2019,16(1):75-104
From its introduction in 1874 until the turn of the nineteenth century the principal infantry firearm of the Ottoman army was the American-made .45 (11.43?×?55R) calibre Peabody-Martini Rifle. Remaining in use with secondary units until 1916/1917, three bayonet types were provided for the rifle during its official service life: a quadrilateral cross-sectioned socket form, followed by a yataghan-style sword bayonet, and finally a shortened and straightened version of this same yataghan bayonet. As such these three bayonets provide a classic illustration of bayonet typology for the period. However, their history and characteristics have never been assessed in detail, an omission this article seeks to remedy. 相似文献