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521.
军事素质基础综合训练的改革与实践研究 总被引:1,自引:0,他引:1
以提高军事素质为核心,结合“4+1”培养模式对复合型军事人才的要求,对军事素质基础综合训练教学进行了改革。重点阐述了深化军事素质基础综合训练的教学改革特点和实践效果,为总装备部乃至全军院校进一步深化军事基础教学改革提供一些思路和参考。 相似文献
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张存波 《国防科技大学学报》2015,37(2)
利用微波脉冲注入实验平台,对硅基双极型晶体管低噪声放大器进行了损伤效应实验。在微波脉冲对硅基双极型晶体管低噪声放大器损伤的失效分析中,当低噪声放大器增益下降大于10 dB时,发现硅基双极型晶体管出现了永久损伤。通过对比测量硅基双极型晶体管损伤前后的电特性以及利用扫描电子显微镜(SEM)观测损伤后晶体管的微观特性,结果表明:硅基双极型晶体管被微波脉冲损伤后,基区的硅材料烧蚀导致发射结和集电结短路,不再具有PN结特性,导致器件失效。 相似文献
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利用有限元软件ANSYS/LS-DYNA对钨合金长杆弹侵彻陶瓷复合装甲与均质钢进行了数值仿真。重点分析了长杆弹垂直侵彻复合装甲全过程,研究了钨合金长杆弹体入射速度与弹体剩余动能、损失动能之间的关系。同时,拟合了长杆弹在不同入射速度侵彻均质钢靶下弹体剩余动能与靶板厚度之间的关系。并根据终点效应关系式,建立了弹体在不同入射速度下陶瓷复合装甲的均质钢等效靶板。分析结果表明,陶瓷复合装甲等效均质钢靶板厚度随弹体入射速度呈先增加后稳定趋势。研究结果对毁伤效能试验与战斗部设计等具有一定的参考价值和借鉴意义。 相似文献
525.
Dan Kuwali 《African Security Review》2013,22(3):248-269
The Constitutive Act of the African Union (AU) provides for the right of the continental body to intervene in the face of war crimes, genocide and crimes against humanity. According to its formulation, Article 4(h) intervention entails military force, which is triggered when a target state fails to discharge its duty to protect its population from mass atrocities. Although Article 4(h) is an ambitious statutory commitment to intervene in a member state by the AU, the Libyan crisis in 2011 showed the ambivalence of the continental institution to act in a decisive and timely manner. The AU's failure to invoke Article 4(h) exposed the need for building the capacity and political will to intervene and to interpret Article 4(h). Therefore, the primary focus of this article is on how Article 4(h) should be interpreted. Flowing from the Pretoria Principles, which seek to provide clarity on the implementation of the AU's right of intervention, Article 4(h) should be viewed as a duty rather than a right to prevent or stop mass atrocities. The duty dimension of Article 4(h) derives from the international instruments that AU member states have ratified to prevent mass atrocities. Rather than being a paper tiger, Article 4(h) should be used in a proactive and timely manner as a military option available to the AU to persuade member states to prevent or halt atrocities. As a last resort, military force pursuant to Article 4(h) should aim at protecting the population at risk and pursuing the perpetrators in order to avoid contravening Article 2(4) of the Charter of the United Nations (UN). Although military intervention can save lives in the short term, it cannot necessarily address the underlying, structural causes of atrocities, such as ethnic rivalries, economic inequalities and scramble for natural resources, among others. Therefore, the prevention of mass atrocities should not be equated with, or be seen through the prism of, Article 4(h) intervention alone. The focus should instead be on the entire spectrum of preventive strategies at the disposal of the AU in the face of mass atrocities, including the African human rights system and the African Peer Review Mechanism. 相似文献
526.
Some have argued that the transatlantic rancor over the Iraq war made cooperation, especially on nonproliferation, unlikely. In contrast, this article, documents post-invasion instances of nonproliferation cooperation, with particular emphasis on the Proliferation Security Initiative and the EU-3 Initiative—the British, French, and German negotiations with Iran over its suspected nuclear activities. In addition to documenting French and British participation in these initiatives, the article analyzes why they have chosen to participate and argues that France and Britain have participated in both efforts because they are committed to avoiding future Iraq-like preventive wars. 相似文献
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采用浸-烘循环的方法模拟干湿循环交替环境进行新型化学键合胶凝材料抗硫酸盐加速侵蚀试验.侵蚀溶液为质量浓度为5%的硫酸钠溶液,一组试验采用全浸-烘循环,另一组试验采用半浸-烘循环.在经受30×N(N=1,2,3,4,5)次循环后,测定试件的强度耐蚀系数和质量损失率,以此评价化学键合胶凝材料抗硫酸盐侵蚀性能.试验结果表明:半浸-烘循环的侵蚀比全浸-烘循环的侵蚀严重;在经受150次侵蚀循环后,试件外观无严重破损,质量不减反增,强度也不降低,说明化学键合胶凝材料具有优良的抗硫酸盐侵蚀性能. 相似文献
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