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461.
462.
针对典型的导弹弹道仿真,通过对反导导弹的几种备选制导律进行了参数调试和数字仿真,设计了初、中制导方案,通过数字仿真给出了弹道规划,明确了允许的发射条件。同时,分析了各方案主要的制导信息误差及其影响,针对高斯噪声误差模型提出了制导信息误差指标。最终确定了较优制导方案。该方案经数字仿真验证具有较优的攻击区性能,攻击区较大、发射条件约束较为宽松,以当前的技术水平有望实现。 相似文献
463.
杨宛 《中国人民武装警察部队学院学报》2007,23(5):39-41
行政执法责任制是依法行政的重要保障。当前实施行政执法责任制存在着一些问题,应从行政执法责任制的本质和操作规程、依法界定执法职责、建立评议考核机制等三个方面进行改革。 相似文献
464.
葛洪正 《中国人民武装警察部队学院学报》2004,20(3):65-66
用"三个代表"重要思想转变消防部队的执法观念,树立执法为民的服务意识,为从根本上规范执法行为,建立服务型消防监督机构提供必要的法规和制度上的支持,以服从、服务于经济发展这个中心. 相似文献
465.
Abstract What are the consequences of military strikes against nuclear facilities? In particular, do they ‘work’ by delaying the target states ability to build the bomb? This article addresses these questions by conducting an analysis of 16 attacks against nuclear facilities from 1942 to 2007. We analyze strikes that occurred during peacetime and raids that took place in the context of an ongoing interstate war. The findings indicate that strikes are neither as uniformly fruitless as the skeptics would suggest, nor as productive as advocates have claimed. There is evidence that the peacetime attacks delayed the target's nuclear program, although the size of this effect is rather modest. The wartime cases were less successful, as attacks often missed their targets either due to operational failure or limited intelligence on the location of critical targets. In our concluding section we show that many of the conditions that were conducive to past success are not present in the contemporary Iran case. Overall, our findings reveal an interesting paradox. The historical cases that have successfully delayed proliferation are those when the attacking state struck well before a nuclear threat was imminent. Yet, this also happens to be when strikes are the least legitimate under international law, meaning that attacking under these conditions is most likely to elicit international censure. 相似文献
466.
The US Navy's audacious Maritime Strategy of the 1980s is often credited with acting as a key catalyst to the demise of the USSR. In assessing the role of strategic missile submarine “bastions” in the country's overall military strategy, the authors are skeptical of the above thesis, explaining that Moscow actually viewed deployments of Tomahawk land-attack cruise missiles on to US submarines (versus direct threats against the Soviet Navy itself) as the most alarming threat. The authors concede that the arms race played a role in the collapse of the USSR, but deny a direct connection with Soviet naval development citing the relatively minor naval proportion of overall defense spending. For the difficulties facing the fleet at the end of the Cold War, they instead blame deep systemic problems internal to the Soviet Navy. 相似文献
467.
研究Gauss伪谱法在空空导弹最优中制导律设计中的应用。建立空空导弹中制导律设计问题最优控制模型,首次提出采用Gauss伪谱法求解最优中制导律设计问题的思路,详细阐述了求解流程,通过仿真算例验证了求解方法的有效性,并同比例导引、打靶法等传统方法进行了对比。仿真结果表明,综合考虑性能指标、计算精度、计算效率等因素,Gauss伪谱法具有明显优势,Gauss伪谱法求解结果和求解效率与配点个数密切相关。研究结果为空空导弹中制导律设计提供理论参考。 相似文献
468.
Rod Thornton 《Small Wars & Insurgencies》2013,24(6):865-885
AbstractThe siege of the northern Syrian town of Kobane was lifted in January 2015. The Kurdish defenders there had triumphed against Islamic State (IS). The conflict then moved on. It moved on, though, with the United States, the United Kingdom, and other Western powers having adopted, almost by default, the Kurds as proxy fighters in this conflict. The Kurds, however, are a divided and fractious nation spread across three states and historically famous for fighting among themselves. In employing the Kurds as proxies against IS, as this article shows, these Western powers must be aware of the unintended consequences that can result. 相似文献
469.
Shivan Mahendrarajah 《Small Wars & Insurgencies》2013,24(3):383-407
This article argues that the Taliban's revolutionary war (RW) program is puritanical reform informed by the Islamic legal duty of al-amr bi'l-ma‘ruf wa'l-nahy ‘an al-munkar (‘commanding what is good and forbidding what is reprehensible’). It also examines the history of this duty with examples of puritanical reform movements emerging from Berber tribes in North Africa and tribes in Arabia. Furthermore, the importance of this duty in Wahhabi Saudi Arabia, and its exportation to Pakistan where Taliban leaders imbibed this ideology, are discussed. Finally the article shows that corruption and abuses by the Afghan regime have given impetus to puritanical reformers: the condition precedent for puritanical reform is pervasive wrongdoing in an Islamic society. 相似文献
470.
Christopher M. Faulkner Joshua E. Lambert Jonathan M. Powell 《Small Wars & Insurgencies》2013,24(3):641-659
ABSTRACTThis paper challenges recent claims that competitive market dynamics incentivize Private Military and Security Companies (PMSCs) to fully commit to providing effective services, thereby reducing the duration of civil war. Our assessment of a most-likely case scenario for this argument – Sierra Leone – reveals four critical problems. First, there is rarely direct competition, even if numerous companies are present. Second, the presence of multiple PMSCs usually represents a collaboration among subsidiaries providing distinct services, often under the same corporate umbrella. Third, data aggregation obfuscates the overlap of PMSC presence, inflating the amount of perceived competition. Finally, we raise concerns regarding how quantitative analyses can conflate conflict intensity with conflict termination. 相似文献