某型火箭增程破甲弹发动机弹道炸分析与处理

根据某型火箭增程破甲弹,在研制阶段做高、底温强度试验时分别出现发动机弹道炸的质量问题,结合实践在理论方面进行了分析,提出了对发动机燃烧室内个别件改进设计的方法。     

基于数据适应性检验的身管磨损量预测研究

应用灰色系统理论研究不确定系统,对系统进行灰色预测模型建立的同时,需要检验系统原始数据序列是否符合建模要求。主要从3个方面检验数据建模的可行性,分别是光滑比、极比偏差和凹凸性检验。结合某型坦克炮身管内膛烧蚀磨损数据,采用不同的磨损数据作为灰色预测模型建模的原始数据序列,具体分成两种情况进行数据检验,并代入模型计算,分析不同情况下模型的预测精度,通过对比计算结果选出与模型匹配度更高的原始数据序列。     

运动潜体湍流尾迹的SAR遥感仿真研究

采用点源法获得密度层化海洋中运动潜体产生的速度场,使用计入海洋内部湍流对海表面毛细重力波作用的SAR遥感全谱模式,利用考虑内波混合的湍流k-ε模式,并且使用Nasmyth海洋普适谱,建立了运动潜体湍流尾迹的SAR遥感仿真模型.利用该仿真模型对Rankine卵形体的湍流尾迹进行了仿真分析,获得令人满意的结果.     

The Blind Basinet: A New Interpretation of Royal Armouries IV.2

For many years a curiosity in the collection of the Royal Armouries, IV.2, or the ‘Blind Basinet’, is a fascinating example of an early 16th century great basinet not so much for what is present but for what is not. The lack of any means of seeing out of the helmet has led to a number of traditions regarding its provenance and purpose. A detailed examination of the helmet’s interior, as well as comparison with some other contemporary pieces, shows that it is an unfinished piece of armour. It was left at the stage where the sights and breaths would have been pierced, but they were left unfinished until some later modifications created a display piece, one which can still be seen at the Royal Armouries in Leeds.     

Greek Armour at the Tower

In the following short notice, the authors tell the story of the appearance of Classical armour in the Tower Armouries in the early and mid-nineteenth century. In the first part, Malcolm Mercer describes the interest surrounding armour from Cumae and the circumstances of its purchase by the Ordnance Office; while in the second Thom Richardson presents a specialist analysis of this group.     

Tailored to the Times: The Story of Casimir Zeglen’s Silk Bullet-Proof Vest

Abstract

The invention of silk bullet-proof fabric, a response to growing violence and anarchy, and intended to protect politicians and public figures, as well as police officers and soldiers, is discussed in the wider context of the world’s political situation at the turn of the 19th century. The complex question of the ownership of this innovation is addressed and the reasons for its commercial failure are discussed. The ballistic properties of silk bullet-proof fabric are evaluated and the impact of this invention on the future development of soft armours is considered.     

弹载惯性测量系统抗高过载技术

在现代高技术条件下的局部战争中,为了提高火炮的射程、打击精度和反应速度,发展制导炮弹系统就成为必然的选择.弹体姿态测量系统是制导系统的重要组成部分,解决其在炮弹发射高过载恶劣环境下的生存问题就成为研究的关键之一.提出了主要抗高过载手段,并对弹体姿态测量系统的抗高过载性能进行了Ansys软件仿真、马歇特试验以及实弹飞行试验.最后得到结论,所给出的抗高过载方案在降低高过载对弹体姿态测量系统的影响方面,可以发挥良好的作用.     

Boko Haram’s increasingly sophisticated military threat

ABSTRACT

This paper evaluates Boko Haram’s military capabilities and details the process of how its standing army, driven by these capabilities, came to pose a phased threat between 2013 and 2015 in particular. This was a period when military fighting dominated the insurgency in north-east Nigeria. Whereas there is an abundance of literature on Boko Haram’s histories and the impact of its insurgency on north-east Nigeria, analysis of Boko Haram’s military campaigning is still deficient. Attempting to fill this gap, this paper uses field findings and battlefield case studies from north-east Nigeria to highlight how Boko Haram’s overt front – its standing army – came to supplant its guerrilla operations as the main security threat to the frontier area.

This pivot towards military fighting, for a group initially composed of a few ragtag combatants, on the surface might seem surprising. Yet, whereas Boko Haram may lack the popular support required for ‘people’s war’, classic insurgency theories nevertheless hold some explanatory power for this deliberate shift: away from guerrilla warfare as the expedient of the weaker side, and towards the use of a large standing army of locals to swarm, and sometimes successfully overrun, state forces.     

《新疆历史与民族宗教理论政策教程》教学设计创新探析

民族地区社会转型推动高校思想政治理论新课程的实施。新课程需要遵循新的教学理念：以学生为主体,教师为主导;以师生互动,关注教学过程为关键;面向生活实际,灵活运用多种教学手段和方法,创新考核方式,加大课外实践力度。创新教学模式,增强教育实效性是一项任重道远的研究课题。     

富营养化水体修复技术的研究现状

湖泊、水库的富营养化已经成为当今世界最主要的环境问题之一。针对富营养化治理的关键问题、治理现状以及目前富营养化水体的一些主要修复技术进行了简要的阐述,并指出防治水体富营养化是一项复杂的系统工程,必须坚持从控制污染源出发,重点开展生态修复,完善管理对策,有计划地逐步实施。