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WANG Hui LIU Shufen ZHANG Xinjia 《武汉大学学报:自然科学英文版》2006,11(6):1498-1502
This paper presents a novel probability generation algorithm to predict attacks from an insider who exploits known system vulnerabilities through executing authorized operations. It is different from most intrusion detection systems (IDSs) because these IDSs are inefficient to resolve threat from authorized insiders. To deter cracker activities, this paper introduces an improved structure of augmented attack tree and a notion of "minimal attack tree", and proposes a new generation algorithm of minimal attack tree. We can provide a quantitative approach to help system administrators make sound decision. 相似文献
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根据青少年学生喜欢探求事物的根源、喜欢怀疑和争论、乐于去尝试一些新的方法的特点,在高中历史教学过程中改变传统的教学方式,通过设置历史情境、构建辩论平台、考究剧情真伪、结合其他学科、撰写历史小论文等方式激发学生的学习兴趣和探究热情。 相似文献
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咏叹调是歌剧中一种结构完整的独唱曲体裁,它的演唱处理,取决于正确的声音形象,剧情的发展变化以及塑造的人物形象特征。 相似文献
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