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381.
Evert Jordaan 《Defence Studies》2018,18(2):188-206
The 2015 South African Defence Review set out to reverse the deterioration of South African National Defence Force (SANDF) capabilities. Within the South African Department of Defence (DOD) this deterioration is expressed mainly in terms of a decreasing defence budget, subsequent declining conventional capabilities and obsolete prime mission equipment. Contemporary research and defence expert debates on this theme, point out the disjuncture between policy ends and the available means, with scepticism for an increased defence budget given the DOD’s lack of internal reform and strategy adjustment. One question that remains largely unanswered in the literature regarding the decline of the SANDF, is why both the policy-makers and the SANDF have remained focused on the primary role of the military (defending territorial integrity) accompanied with an unaffordable conventional force design? This question relates to the aim of this paper and is explored by revisiting initial defence policy decisions and compromises that were made in the 1990s. It is argued that the primary role of the SANDF and its conventional force design suited the interests of both the politicians and the military, but that the drawbacks thereof have harshly caught up with the DOD. 相似文献
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陆军防空兵自动化指挥系统已作为防空作战效能“倍增器”列入国家军装武器发展规划,并在近期可能交付防空部队使用。这一新装备、新技术的出现和发展必然会引起防空作战指挥的变化。在分析防空兵指挥自动化对防空作战指挥影响的基础上,对如何发挥防空兵自动化指挥的防空作战效能和防空兵指挥自动化需迫切解决的一些问题加以探讨。 相似文献
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计算机已成为现代武器系统的核心,研制计算机诊断专家系统必然会增强部队的战斗力(?)以研制计算机诊断专家系统为主要内容,介绍了我们在初步设计阶段考虑的几个问题。 相似文献
386.
靳威 《中国人民武装警察部队学院学报》2007,23(6):46-48
随着城市的发展和建筑水平的提高,对消防设计提出了越来越高的要求,防火分区的设计尤其重要。针对某高层通讯大厦的消防设计实例进行分析,运用性能化设计方法,探讨利用防火玻璃解决防火分区超大的技术办法。 相似文献
387.
《防务技术》2020,16(3):617-626
The increasing threat of explosions on the battle field and the terrorist action requires the development of more effective blast resistance materials and structures. Curved structure can support the external loads effectively by virtue of their spatial curvature. In review of the excellent energy absorption property of auxetic structure, employing auxetic structure as core material in curved sandwich shows the potential to improve the protection performance. In this study, a novel cylindrical sandwich panel with double arrow auxetic (DAA) core was designed and the numerical model was built by ABAQUS. Due to the complexity of the structure, systematic parameter study and optimal design are conducted. Two cases of optimal design were considered, case1 focuses on reducing the deflection and mass of the structure, while case2 focuses on reducing the deflection and increasing the energy absorption per unit mass. Parameter study and optimal design were conducted based on Latin Hypercube Sampling (LHD) method, artificial neural networks (ANN) metamodel and the nondominated sorting genetic algorithm (NSGA-Ⅱ). The Pareto front was obtained and the cylindrical DAA structure performed much better than its equal solid panel in both blast resistance and energy absorption capacity. Optimization results can be used as a reference for different applications. 相似文献
388.
Gas and particulate emissions from ship transportation have been increasing in recent years. In order to mitigate ship emissions near coastal areas, voluntary vessel speed reduction incentive programs (VSRIPs) were put in place by a number of ports. This paper studies a schedule design problem faced by liner shipping companies under VSRIPs. It proposes a mixed-integer nonlinear mathematical model for the minimization of the total cost, consisting of fuel cost, as well as operating cost, minus dockage refunds. The model balances three determinants, that is, the compliance of VSRIPs, the speed limit (the maximum physical speed of ships and the upper speed limit imposed by VSRIPs), and the limited number of ships. An enumerative algorithm and a piecewise-linear approximation algorithm are developed, based on some properties of the nonlinear model. The efficiency of the proposed algorithms is validated through extensive computational experiments. 相似文献
389.
主要叙述了美、英、法进行未来陆军转型的简要过程与概况,以及他们的发展方针与模式,简述了中国军队的军事改革情况,从而提出了我国军事电子信息化发展的顶层设计、转型路线、军事电子信息装备的综合集成等相关方面的分析思考和应做的努力,希望通过抛砖引玉的方式,引起和获得同仁们的帮助以及对火控、指控装备发展的重视. 相似文献
390.