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171.
余海彬 《中国人民武装警察部队学院学报》2002,18(6):48-49,55
阐述当前我国火灾事故调查现状 ,分析当前火灾事故调查工作存在的问题 ,并提出了加强火灾事故调查工作的建议。 相似文献
172.
Derrick V. Frazier 《Defence Studies》2017,17(4):379-397
Multinational Military Exercises (MMEs) are often viewed by states as opportunities to increase interoperability, improve cooperation, and solve common security problems. We argue that in addition to this, MMEs work as tools to shape the shared beliefs of coalition partners surrounding threat. Specifically, MMEs allow multinational forces to identify best practices, consolidate beliefs, and codify behavior through doctrine, typically by means of some institutional process. We examine our argument on MMEs through an analysis of various multinational and coalition partner efforts to identify security threats and cooperate through the development of common doctrine at the strategic, operational, and tactical levels of warfare. Our analysis suggests that the use of MMEs for doctrine development does help to socialize states in terms of identifying common threats and subsequently sharing a process by which to address them. 相似文献
173.
油罐是油品储运的重要设备,罐底最易出现穿孔渗漏油现象,致使罐基内部油气质量分数高于正常值。以油库中柴油覆土罐群为例,研究并试验了根据罐基油气质量分数识别罐底渗漏的方法:分析罐基探漏孔位置分布并钻孔;多次探测罐基油气质量分数,根据探测数据识别各罐有无底部渗漏;为了便于以后检测油库时识别各罐有无渗漏,为各罐建立状态监测表,并将无渗漏的罐基油气质量分数最高值暂定为该类罐的安全值,低于该安全值的油罐可直接判定为无渗漏。实践结果证明,这种不开罐检测罐底渗漏油的方法可及时发现故障并采取措施,对储油安全具有重要意义。 相似文献
174.
AbstractThe emergence of the Islamic sect, Boko Haram, and its transformation into a terrorist organisation has dominated recent discourse in the fields of political science and security studies, both within and without the socio-politico enclave known as Nigeria. Much of the discussion has centred on the extra-judicial execution of its founder, Mohammed Yusuf, which purportedly intensified the radicalisation of the group, and whether or not the sect receives operational and/or financial support from foreign terrorist associations. The interest of others has been to forecast the possibility of the internationalisation of the group's activities. This paper aligns with those whose interest is to identify and proffer ways of resolving factors that predisposed the Nigerian state to the levels of violence perpetrated by Boko Haram, with a view to averting much greater crises in the future. It adopts some historicism in demonstrating that the responsibility for the deepening insecurity in the country resides in the Nigerian state structure, which has often been seen as willing to sacrifice the well-being of the many for the benefit of a few. On the whole, the paper utilises state fragility as the framework of analysis by identifying the incapacity of the state in effective service delivery, which has as a result created a situation of mass unemployment and extreme poverty that has fanned the Boko Haram uprising. It concludes that a sustainable solution to the crisis lies in addressing the root causes of inequality, unemployment and poverty, with which most Nigerians, particularly in the north, subsist. 相似文献
175.
提出了一种小卫星姿态确定的非线性滤波算法,该算法利用三轴磁强计和光纤陀螺作为姿态敏感器。在非线性滤波器的设计中,从两个方面对平方根sigma点卡尔曼滤波方法进行改进。第一,把姿态四元数的矢量部分、光纤陀螺的漂移和噪声组合,得到滤波器的增广状态向量;第二,分别建立向量旋转模型、最优化模型和误差四元数乘法模型来确保非线性滤波过程中四元数的归一化约束。仿真分析结果表明,本文提出的非线性滤波算法能够有效地提高小卫星的定姿性能,与扩展卡尔曼滤波相比,具有较高的精度、稳定性和较快的收敛速度;与无迹卡尔曼滤波相比,收敛性相当,但是精度略优,稳定性和计算效率较高。 相似文献
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物业管理是城市社区管理中一个重要的基层管理体系,消防安全管理作为物业管理的一项重要工作,目前还存在着许多亟待解决的问题。从高层住宅物业消防管理的现状入手,分析其存在的问题及原因,探讨解决问题的措施,促进物业消防管理的发展完善。 相似文献
180.
采用混合分层理论和Ressiner混合变分原理,在壳的厚度方向取二次插值函数来描述位移沿厚度方向的变化规律;采用三次和四次插值函数来描述横向应力沿厚度方向的变化,线形处理筋条的变形,推导出粘弹加筋层合圆柱壳的动力学方程和协调方程组,并采用拉普拉斯变换,得出简支粘弹加筋层合圆柱壳稳态振动的响应解。对于自由阻尼层合圆柱壳,所给出的振动频率和结构损耗因子与解析解吻合良好.结果表明,较高的层间横向正应力是引起潜艇消声瓦脱落的主要因素,而采用较高模量的粘弹性阻尼材料将降低层间横向应力的幅值. 相似文献