面向任务的随舰备件配置方法

研究了多阶段任务成功概率的计算方法,根据舰船多阶段任务的特点,建立了随舰备件配置模型.提出了系统修整过程中确定备件配置方案的分析方法与系统执行任务过程中基于粒子群算法的备件配置模型.经实例分析表明:该模型既满足了任务成功概率的要求,又充分利用了舰船排水量和宝贵的备件存储空间,对于随舰备件的配置具有普遍的适用性.     

日本“大隅”：变相的两栖攻击舰

1996年11月18日,日本海军战后最大的自称为“坦克登陆舰”的“大隅”号缓缓下水。该舰的建成,创下了战后日本海军舰艇史上数个第一：舰体长度第一;作战舰艇中标准排水量第一;在两栖舰船中,第一次采用隐形设计。     

对于两栖战舰发展战略的思考

进入新世纪以来,许多国家海军如雨后春笋般接连推出各种新式两栖战舰。美国海军自不待说,两栖攻击舰、船坞运输舰、船坞登陆舰等大型两栖舰船的研发与建造持续升温,其他国家海军发展两栖舰船也亳不示弱,如印度、澳大利亚等国海军都在加紧购买或发展适合本国特点和海上安全需要的两栖战舰,东亚地区的我国两个近邻——日本和韩国发展两栖舰船的势头尤为猛烈。日本早在2003年就建造了3艘满载排水量1．3万吨的“大隅”级船坞运输舰,此后又于2007年8月下水了满载排水量达1．8万吨的“日向”号16DDH直升机驱逐舰。     

舰船的排水量与吨位

舰船的排水量指什么?排水量指舰船自由漂浮在静水中,保持静态平衡时所排开的水的质量。根据阿基米德定律,舰船排开的水的重量等于舰船本身的重量,因此,"排水量"这个数据指标反映的是军舰的总质量。     

美国鳐鱼级核潜艇

在建造“鹦鹉螺”号和“海狼”号核潜艇时,美国海军舰船局便建议在1955和1956财政年度再建造4艘排水量较小且造价较低的新型号攻击型核潜艇,这就是“鳐鱼”(Skate)级攻击型核潜艇。从某种意义上讲, “鹦鹉螺”号和“海狼”号核潜艇均是一边摸索一边研制设计,带有试验潜艇的性质。基本设计特点是以核反应堆为     

基于相关性模型的舰船装备测试性分析与建模

为了提高舰船装备的综合诊断能力,在舰船设计、研制阶段就必须进行装备测试性设计工作。为此,根据舰船装备测试性要求,对装备进行了故障模式影响分析,确定了装备在设计和制造过程中所有可能的故障模式,以及每一故障模式的原因和影响,据此对装备功能和结构进行了划分。然后,利用相关性模型对舰船装备进行测试性分析与建模,建立了舰船装备组成单元的相关性图示模型、数学模型,并运用考虑可靠性和费用的优选方法,建立了舰船装备诊断树,得到舰船装备的测试方案。算例分析表明:该研究可有效提高舰船装备测试的效率,提升测试的经济性。     

“斯维尔德洛夫”级轻巡洋舰

在二战期间,苏联与英美是盟友,苏联广泛接触了英美两国建造的水面舰艇,对他们的舰船设计思想、使用思想有所了解。依据这些经验,苏联在一定程度上调整了自己的舰船设计思想。"斯维尔德洛夫"级(68bis)就是这一时期的产物,它是苏联二战后建造的第一批大型水面舰艇,也是世界上最后一级火炮巡洋舰。"斯维尔德洛夫"级总长210米,宽22米,标准排水量13600吨,满载排水量16400吨,远超过了《华盛顿条约》中对轻巡洋舰的限定。但该舰主炮口径为152毫米,在二战后     

大型舰船平台购置费投资分布及控制

针对大型舰船平台购置费的特点,分析了其投资分布问题,利用龚伯兹曲线研究了在没有样本条件下的大型舰船平台购置费的投资分布,提出了基于生命周期曲线的大型舰船平台购置费投资分布模型,并用具体实例验证了模型的可行性。在大型舰船平台购置费投资分布研究以及总结对比武器装备费用控制方法的基础上,根据大型舰船平台购置费控制的特点,进行了大型舰船平台购置费控制问题的分析。针对原材料费用的控制,提出了基于材料纳期的费用控制方法;针对工时费用的控制,提出了基于国有单位平均工资指数的费用控制方法,并提出了大型舰船平台购置费控制的整体的观点。     

英国皇家建造MK10通用登陆艇

英国宇航赛玛公司获得一项价值约350万英镑的合同,设计并建造10艘新一代MK10通用登陆艇。该艇作为英国皇家海军新型两栖作战运输坞舰“海神之子”号和“堡垒”号载运的登陆艇。新型通用登陆艇采用滚装、滚卸方式,用在两栖作战运输坞舰及其它两栖运输舰船与海岸之间输送部队和设备。与目前在“无畏”号上所使用的MK9型老式通用登陆艇进行比较,大大提高了使用效率。MK10通用登陆艇采用钢结构,艇长30米,空载排水量为170吨,满载排水量240吨。标准的有效载荷包括1辆主战坦克,或4辆运兵车,或120名全副武装的士兵和2辆雪地车。     

台军“基德”级驱逐舰及作战能力分析

美国向台湾出售的首批两艘“基德”级驱逐舰已于2005年12月17日服役。另外两艘“基德”舰也即将返台服役。该舰标准排水量近7000吨,是台军目前吨位最大的战舰。舰上配备“标准-2”舰空导弹、“密集阵”近程防御武器系统“、鱼叉”反舰导弹和MK32三联装反潜鱼雷发射器等武器系统,具备一定的防空、反舰、反潜和编队作战能力。一、基本性能根据2005～2006年版《简氏舰船年鉴》提供的数据“,基德”级驱逐舰长171.7米,宽16.8米,吃水6.2米,标准排水量6950吨,满载排水量9574吨,动力装置采用4座通用动力公司的LM2500燃气轮机,功率86000马力,航速33…     

Reviews

Douglas S. Derrer, We Are All the Target: A Handbook of Terrorism Avoidance and Hostage Survival. Annapolis, MD: US Naval Institute Press, 1992. Pp. x+135, notes, index. $14.95. ISBN 01–55750–150–5

Ian Knight, Zulu: Isandlwana and Rorke's Drift, 22–23 January 1879. London: Windrow & Greene, 1992. Pp.136, 150 illus., incl 8 colour plates, maps, biblio. £35. ISBN 1–872004–23–7

Ian Knight, By the Orders of the Great White Queen: Campaigning in Zululand through the Eyes of the British Soldiers, 1879. London: Greenhill Books and Novato: Presidio Press, 1992. Pp. 272, 17 illus., 1 map. £18.95. ISBN 1–85367–122–3

Manfried Rauchensteiner and Erwin A. Schmidl (eds.), Formen des Krieges: vom Mittelalter zum ‘Low‐intensity’ Conflict’. Graz : Verlag Styria, 1991. Pp.208. DM35. ISBN 3–22–12139–7

Harold J. Kearsley, Maritime Power and the Twenty‐First Century. Dartmouth: Dartmouth Publishing Company, Limited, 1992. Pp.xv + 203, 13 diagrams, index. £32.50. ISBN 1–85521–288–9     

Panjwai: a tale of two COINs in Afghanistan

The US Army has two approaches to counterinsurgency operations in Afghanistan. One is hard, or combat-focused, and the other is soft, or development-focused. This study examines two US Army task forces deployed to Panjwai District, Afghanistan from 2012 to 2013. CTF 4-9 and 1-38 offer a meaningful comparison because they pursued these contrasting approaches among the same population and against the same enemy at the same time and place. The study compares each unit’s approach and finds that neither approach was successful absent the other. The article concludes by recommending further research into combining the approaches at the operational level.     

线性核时频信号表示及其仿真

根据ｃｈｉｒｐ信号在模糊域的特点,本文提出了线性核时频表示方法。这种方法在提高分辨率、消除交叉项以及抑制噪声等方面都具有较高的性能。理论分析和实验结果都证实了这种方法的有效性     

Forecasting a Hurricane: Israeli and American Estimations of the Khomeini Revolution

The surprising ‘Arab Spring’ raises the question as to what would enable national intelligence to provide high quality warnings prior to the eruption of popular revolutions. This article uses new sources of evidence to trace and explain Israel's success in comparison to US failure at correctly estimating the course of the Iranian Revolution in 1977–79. In explaining this variance, the article shows that it was mainly the result of the intimate acquaintance of Israel's representatives in Iran with the local language, history and culture, as well as the ability to communicate with locals – tools which the Americans completely lacked.     

关于教师继续教育培训模式的思考

继续教育作为终身教育的重要组成部分和基本形式,对教师的发展成长意义重大。继续教育工作开展十多年来,取得了一定的成绩,但还存在不少问题,如学习动机较为被动,管理认识不到位,教学内容陈旧空泛,教学方法呆板机械等。随着课程改革的不断深入,继续教育必须采取相应的改进措施,树立以人为本,服务至上的观点,教学内容的前瞻性与实用性并重,教学人员进行整合,教学方法灵活多样,评价考核规范科学等,以此激活受训教师内在的学习动机,更大程度地提高继续教育培训的实际效果。     

用DirectShow实现网络视频

目前市场上的网络监控技术一般用昂贵的硬件设备来支撑,投资较大。在深入研究微软的DirectX9.0的基础上,提出如何用DirectShow软件技术和普通的数字摄像头来实现网络视频的监控和实现技术,内容涉及通信协议、视频的编码与解码技术、视频的编码格式和COM组件编程技术等,最终的实验结果令人满意,且费用低廉,技术可靠,为在高速局域网内构建视频监控系统提供有效的技术支持。     

Interpreting the Ribchester Helmet

In 1796 a 13-year-old boy playing on wasteland behind his father’s house in Ribchester, Lancashire discovered an assemblage of over 30 Roman artefacts, including a decorated brass helmet. Although partially corroded the Ribchester helmet is a fine example of a first-century AD cavalry sports helmet. This article considers how the interpretation of the helmet has evolved since its discovery. The multi-faceted iconography of the helmet with its mural crown diadem is that of an elite soldier and is paralleled in other examples of cavalry sports helmets of the Ribchester type. The long-neglected imagery on the helmet bowl is reinterpreted and seen not as a haphazard collection of randomly placed combatants but as a highly structured, symmetrical composition specifically designed to be viewed from different directions.     

Putin – the masked nemesis of the strategy of ambiguity

Recent events demonstrate the complex and adaptive approach employed by Russia to reassert influence in Europe. The changing face of Russia’s strategy commenced in 2007 when it launched a crippling cyber-attack against Estonia. This was followed by a large Russian conventional attack against Georgia in 2008, occupying two large areas of the nation. 2014 witnessed the Russian annexation of Crimea where in just a week, Russia seized control of Crimea “without firing a shot.” The annexation of Crimea was rapidly followed by a Russian inspired and led subversive war in eastern Ukraine. The common thread among these diverse Russian operations is its use of ambiguity to confound and confuse decision makers in the West.     

Desert insurgency: lessons from the third Tuareg rebellion

This article provides an in-depth examination and analysis of the 2006–2009 Tuareg rebellion in Mali and Niger. It identifies the underlying reasons behind the rebellion, explores contrasting counter-insurgency (COIN) strategies employed by the two governments, and presents some lessons learned. While both COIN approaches ultimately produced similar peace settlements, the article argues that the Malian strategy of reconciliation combined with the selective use of force was far more effective than the Nigerien iron fist approach at limiting the size and scope of the insurgency and producing a more sustainable peace. It concludes by looking at the role of external actors, particularly the United States, and how the failure to internationalize the conflict was actually more beneficial to the local COIN effort, as well as to the longer strategic interests of the United States in the region.