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121.
在单服务台排队系统理论的基础上,建立了单火力单元对多个目标射击的系统仿真模型,对此模型进行了分析,给出了模型的适用范围,并通过在计算机上仿真运行实例,验证了该仿真模型的正确性.该方法是一种有益的尝试与探索,对局部作战指挥决策有一定的参考价值. 相似文献
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Stephen I. Schwartz 《The Nonproliferation Review》2013,20(1):1-2
The Nonproliferation Review (NPR) recently interviewed Ambassador Sergio de Queiroz Duarte of Brazil, who presided over the 2005 Seventh Review Conference of the Treaty on the Non-Proliferation of Nuclear Weapons (NPT). Ambassador Duarte discussed his views on the outcome of the conference and the future of the treaty. He provided NPR with valuable insights into the outcome of the conference and also shared his thoughts on some of the most pressing issues confronting the NPT today, including the Middle East, nuclear terrorism, elimination of the threat of highly enriched uranium in the civilian nuclear sector, proposals to limit access to the nuclear fuel cycle, nuclear disarmament, and negative security assurances. Blaming the failed conference on a general lack of political commitment among states parties and their unwillingness to negotiate common solutions, Ambassador Duarte stressed that “the conference should face squarely its own failure without my attempting to disguise or sugarcoat the deep differences of view, which must be resolved with courage and determination by the states parties if they want the treaty to remain effective.”?He emphasized that if states fail to act on their overriding interest in upholding the NPT, especially if states parties continue to ignore or disregard their nonproliferation and nuclear disarmament obligations, some states might come to believe that their security interests are no longer served by the treaty. The future prospects of the NPT would then “look dire indeed.” 相似文献
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Justin V. Hastings 《The Nonproliferation Review》2013,20(3):429-450
This article uses a geographic approach to examine one aspect of the nuclear black market: the coordinators who bring buyers and sellers together, and transport goods between them. The most important factor in determining the geographical structure of a proliferation network is the network coordinator's access (or lack thereof) to unique state resources. Coordinators with access to state resources and prerogatives can avoid embedding themselves in hostile countries or relying on commercial infrastructure, often leading to territorially diffuse logistical networks. Coordinators without such access are forced to rely on commercial infrastructure and favorable local political, economic, and social conditions, often resulting in territorially centralized logistical networks. This is illustrated through case studies of Abdul Qadeer Khan's supply networks to Pakistan, Libya, and Iran. The article concludes with some observations about the implications of a geographical approach for understanding nuclear proliferation networks. 相似文献
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窄带干扰下GPS接收机捕获性能的研究 总被引:3,自引:1,他引:2
针对GPS接收机抗干扰能力强的特点,分析了窄带干扰对接收机的捕获性能的影响.在扩频理论的基础上,给出了GPS C/A码接收机信号捕获的数学模型,计算得出平均捕获时间与捕获时间方差,给出窄带干扰下的接收机信号捕获的仿真结果.结果表明,当窄带干扰功率超过一定的值时,会导致GPS接收机捕获性能的严重恶化. 相似文献
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介绍了基于TMS320LF2407A的交流伺服系统的硬件和软件构成及实现方案,给出了系统的实验结果,矢量控制与其它控制方法的比较结果表明,与其它控制方式相比,转差频率矢量控制具有动态性能好、控制精度高的突出优点,适合于伺服系统的设计. 相似文献
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本文以带宽Toeplitz系统的快速并行解法为基础,通过建立秩1的修正格式讨论了拟带宽Toeplitz系统的一种快速并行算法,其串行运算量为9nh+O(h).设p为处理机台数,当p≤n时,并行运算量为 ;当p=3n时,运算量为2h ̄2log2n+O(1),其中h表示拟带宽宽度。 相似文献