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1.
防火门关键材料、安装、使用中存在的问题,会对防火门的使用功能、人员疏散等产生诸多不利影响。就防火门关键材料中填充材料的性能、木质板材的阻燃、五金和防火玻璃的使用不当等问题进行了综述,并提出了相应改进对策;对安装过程中的校验、规范、细节、辅料的使用等问题提出了具体改进措施;指出了用户在使用中存在的突出问题,并提出解决方案。  相似文献   

2.
以消防实践中防火门和防火卷帘设置及控制方式的不合理现状为出发点,阐述了在民用建筑中如何更合理的设置和控制防火门和防火卷帘,以更有效的发挥其防火分隔作用,对建筑防火设计人员和消防监督人员均有较强的指导意义。  相似文献   

3.
首先分析了研发与制造一体化技术是适应武器装备柔性化制造需求的先进制造技术,然后介绍了装备研发与制造一体化技术的涵义和体系结构,分为以研发为中心的研发与制造一体化技术和以制造为中心的研发与制造一体化技术。最后详细研究了其中的物资供应支持系统及其体系结构。  相似文献   

4.
利用静电纺丝技术制备了聚丙烯腈(PAN)纳米纤维,考察了PAN溶液质量浓度、纺丝电压和挤出速率等工艺参数对PAN纳米纤维制备及其微观形貌的影响,制备了直径可控的PAN纳米纤维,并将其对纱线进行包覆。结果表明:PAN溶液的质量浓度和挤出速率对纤维成形和直径的影响较大,随着PAN溶液质量浓度升高,溶液可纺性增加;较低的挤出速度能纺出直径细而均匀的纳米纤维;纤维直径随着纺丝电压的增加而减小。PAN纳米纤维与纱线能较好地复合,为纳米纤维的应用、纱线改性和纤维增强增韧复合材料界面设计提供了新方法和技术支撑。  相似文献   

5.
大型航天研发项目对于社会经济发展和国防安全有着重要影响,是国家重大工程中一类较为特殊的项目,而风险分析是大型航天研发项目按计划、高质量、低成本完成的重要保障。通过分析大型航天研发项目的特点、风险因素以及管理过程,结合Multi-Agent以及分布式项目管理的理论和技术,研究和提出了一种新的基于Multi-Agent技术的大型航天研发项目风险分析方法,在此基础上针对具体项目进行了实验仿真,获取了项目的风险水平和关键风险因素,为航天研发项目风险管理与控制提供决策支持。  相似文献   

6.
防火建材在国家经济发展和社会安全保障中具有重要意义。介绍并分析了当前国内防火涂料、不燃性无机复合板、防火堵料、防火卷帘、防火玻璃、防火门等防火建材的基本情况、存在问题以及发展方向,探讨了新科技在防火建材中的应用,对绿色防火建材的研究进行了展望。  相似文献   

7.
梁晓波  邓祯 《国防科技》2021,42(4):85-91
发展语言智能处理技术是全球新军事科技研发的重要趋势。美军在几十年的发展过程中,不遗余力地推进新的语言智能技术的研发与应用。在人工智能宏观政策和举措的带动下,美国政府与军方在语言智能领域采取了较为清晰的战略路线:明确需求方向,注重长远规划;重视军民融合,调动地方研发活力;创新技术研发资金的管理模式,提高发展效率;推动技术在关键领域的应用,加快美军战斗力的形成。本文认为,面对这一趋势,我们需要深度布局国防语言智能处理技术战略,重视面向未来需求的长远规划;充分调动语言智能处理技术研发的"民间力量",注重军产学研的协同创新;建立科学适度的项目研发机制,加快颠覆性技术的战斗力转化。  相似文献   

8.
<正>从印染技术的研发者到扎根一线的工程师,从企业创新的带头人,到挺进军工的排头兵——潍坊海特印染科技有限公司创始人、总工程师杨振东,以爱国之情,报国之志,通过不懈的拼搏、刻苦的攻关,在新型纺织印染助剂原料的开发、生产和应用技术,以及各种新型纤维面料及功能面料染整技术及其助剂开发与应用上做出突出贡献。杨振东生于20世纪60年代,在齐鲁文化的熏陶中成长,1986年,风华正茂的杨振东就职于昌  相似文献   

9.
龙汉 《国防科技》2004,(6):25-26
三维可视化技术引发了科研分析手段的革命,抢占三维可视化技术研发的制高点是我国学术界的紧迫任务,本文简要叙述了三维可视化技术的数学基础和编程基础,列举了三维可视化技术的应用现状,并结合作者的开发实践介绍了某三维作战仿真场景的研发情况。  相似文献   

10.
《宁夏科技》2001,(3):6-7
台湾研发IDF战机。主要是由于台湾本岛缺乏战略纵深、防空力量严重不足、外购高性能战机无门的情况下,不得不作自行研制的尝试.尽管如此,还是接受了美国民间企业提供的一些高档技术,IDF与F-16属同级战机,但战斗性能不会比F-16强,惟一比F-16幸运的是,F-16在台湾“机瘟”前赴后继,IDF尚比较安全。  相似文献   

11.
高功率微波武器是近几年发展起来的定向能武器之一,被认为是在未来制天权争夺的战场上对卫星有效载荷最大的威胁之一.首先对高功率微波武器的关键技术及技术途径进行了讨论,然后描述了高功率微波对目标损伤的机理和耦合途径,最后根据高功率微波的不同耦合途径对卫星有效载荷受到攻击的可行性进行了详细的分析,计算结果表明,高功率微波武器在高峰值功率或距离很近的情况下都会对未进行电磁加固的卫星有效载荷产生损害.  相似文献   

12.
According to the International Committee of the Red Cross (ICRC) publication Interpretive Guidance on the Notion of Direct Participation in Hostilities under International Humanitarian Law, all civilians (including child soldiers) lose their immunity from direct targeting ‘for so long as’ their actions amount to direct participation in hostilities. All civilians can, however, access the revolving door of protection and return to their civilian activities – complete with full immunity from direct targeting – provided the nature of their direct participation was spontaneous and disorganised. Once it can be ascertained that their participation in hostilities amounts to continuous combative functions, they relinquish their access to the revolving door of protection, and can be targeted at all times until they abandon their formal or functional membership of the belligerent group. This piece analyses how the revolving door phenomenon and the notion of continuous combative functions apply in instances where civilian child soldiers are directly participating in hostilities.  相似文献   

13.
The war that Portugal was obliged to fight in Africa began in 1961 and immediately stretched the resources of its armed forces. Nowhere was this thinness more apparent than in policing the vast territory of Angola. The east and southeast of Angola were particularly vulnerable, as the area was a vast, sparsely populated region characterised by enormous featureless plains or chanas covered in tall grass and broken by an extensive river system and mountainous forests. The only military solution to policing these immense spaces was aviation and specifically the helicopter that could carry troops into battle, protect them with a gunship and bring them home when the operation was concluded. The immediate problem for the Portuguese Air Force (Força Aérea Portuguesa or FAP) in Angola and elsewhere was a scarcity of helicopters. The solution was an alliance with South Africa, which had a strong inventory of Alouette IIIs, to help in policing the east. This move was likewise in the interest of South Africa, as its threat came from Zambia through south-eastern Angola. This article examines the strategic and tactical development of this unusual, cross-cultural alliance and the symbiotic relationship that resulted in destruction of the enemies of both in Angola.  相似文献   

14.
本文主要介绍了国外焊条的现状和发展趋势,包括焊条的高韧性、高效率、低尘低毒和耐吸潮性能,为国内的焊条研究提供了参考依据。  相似文献   

15.
《Arms and Armour》2013,10(2):122-143
Many late medieval documents, notably inventories of arms and armour, of Englishmen contain references to ‘Scottish swords’ and other weapons. What did the compilers of these documents mean when they described a weapon as ‘Scottish’? How did such weapons come to be in the possession of these men? This article will attempt to explain this phenomenon drawing on primary documentary sources and surviving material culture from Glasgow Museums’ collections and others, as well as artworks from the period.  相似文献   

16.
17.
In the Post-Bipolar Era the growing complexity of the military operations requires a new approach for the resolution of international crises. Since the end of the Cold War, peace support operations (PSO) have become the mainstay and principal occupation of most Western armies. At the same time, Italy has been one of the most important actors in such an area. The article focuses on the cooperation between military and civil components (a process called CIMIC) as a key variable in the Italian PSOs. We will analyse in detail the main lessons learned from past military interventions as well as the general context in which new tendencies are taking place. The maintaining of a minimum security frame becomes essential to fulfil activities ‘collateral’ to the mission: reconstructing services and infrastructure, food distribution, water and medication, law and order, de-mining, training of local forces, and supporting local institutions. These are the main tasks to obtain thrust and support from the population.  相似文献   

18.
Energy continues to serve as the bedrock of modern economies and the main driver of modern society. For Africa, the production and supply of energy resources such as crude oil, natural gas, uranium, coal, biomass, biofuels and other renewables are an important source of employment, rents, taxes, royalties and profits. This sector brings in several tens of billions of dollars of revenue annually. The production and delivery of such resources, however, depend on critical infrastructures such as pipelines, refineries, processing plants, terminals, rigs, electrical energy pylons, substations, pump stations, vessels, and tankers. These infrastructures have been attacked by terrorists, insurgents, vandals and saboteurs, all of whom see them as targets against which to register their grievances and extract concessions from the state. This paper is a chronological account of some of the documented incidents of terrorism, insurgency, kidnapping, destruction, sabotage, and human casualties suffered in the oil and gas sectors in Africa between 1999 and 2012. It is based on data extracted from the databases of the RAND Database of World Terrorism Incidents and the University of Maryland's Global Terrorism Database (GTD).  相似文献   

19.
《战略研究杂志》2012,35(5):689-711
Abstract

This article explores the effect of connectivity on strategic affairs. It argues that the effect on war's character is potentially, although not yet shown in practice, considerably large. Its effect upon the distribution of power among states in the international system is small, contrary to the claims of ‘cyberwar’ alarmists. All told, however, its effect upon strategic affairs is complex. On the one hand, it represents a significant advance in the ‘complexification’ of state strategies, understood in the sense of the production of intended effects. On the other hand, strategists today – still predominantly concerned with the conflicts and confrontations of states and organised military power – are generally missing the power which non-traditional strategic actors, better adapted to the network flows of the information age, are beginning to deploy. These new forms of organization and coercion will challenge the status quo.  相似文献   

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