AN FFT-BASED SELF-SIMILAR TRAFFIC GENERATOR

IntroductionWhen modeling network traffic,packet ar-rivals are often assumed to be Poisson processes,because such processes have attractive theoreticalproperties. Recenet work,however,argues con-vincingly that local- area network traffic is muchbetter modeled using statistically self- similar pro-cesses[1] ,which have more different theoreticalproperties than Poisson processes. A subsequentinvestigation suggests that the same holds forwide- area network traffic[2 ,3 ] .The theory of self- sim…     

Cryptanalysis of Two Pseudo-attacks from the Same Mathematic Mistake

Yang and Shieh proposed a timestamp-based password authentication scheme. Fan and Shen gave different improvements on it. Wang claimed that Fan's improvement is insecure and gave his attack. Yang did the similar things on Shen's scheme. This paper gave further cryptanalysis on Wang's and Yang's attacks and pointed out that both of their attacks are infeasible. Wang and Yang made the same mathematic mistake and their attacks are pseudo.     

单层钢筋混凝土结构爆破振动反应谱分析

在渝怀二线漾头越行站站改工程爆源附近火车站站房进行爆破振动试验.采用MATLAB对实测爆破振动信号进行基于db8小波基函数的7层小波包分解重构,并对重构后节点进行反应谱分析.结果表明:原始信号的主频位于优势频带范围内;随着节点编号的增大,峰值振速与能量同步变化,均呈先增大后减小的趋势;随着建筑物高度和传播距离增加,低频...     

STRUCTURAL MODELING OF WAN TRAFFIC

ＩｎｔｒｏｄｕｃｔｉｏｎＲｅｃｅｎｔｅｍｐｉｒｉｃａｌｓｔｕｄｉｅｓ［１～４］ｏｆｈｉｇｈ－ｒｅｓｏｌｕｔｉｏｎｔｒａｆｆｉｃｍｅａｓｕｒｅｍｅｎｔｓｆｒｏｍａｖａｒｉｅｔｙｏｆｄｉｆｆｅｒｅｎｔｗｏｒｋｉｎｇｃｏｍｍｕｎｉｃａｔｉｏｎｎｅｔｗｏｒｋｓｈａｖｅｐｒｏｖｉｄｅｄａｍｐｌｅｅｖｉｄｅｎｃｅｔｈａｔａｃｔｕａｌｎｅｔｗｏｒｋｔｒａｆｆｉｃｉｓｓｅｌｆ－ｓｉｍｉｌａｒ，ｏｒｆｒａｃｔａｌ，ｉｎｎａｔｕｒｅ，ｉ．ｅ．，ｂｕｒｓｔｙｏｖｅｒａｗｉｄｅｒａｎｇｅｏｆｔｉｍｅｓｃａｌｅｓ．Ｔｈｉ…     

光面爆破技术在松软砂岩边坡开挖中的应用

太长高速公路K62 + 44 0～K62 + 5 2 5段的砂岩松软、节理裂隙发育、完整性差 ,在此种地质条件下采用光面爆破技术并获得成功。分析砂岩爆破参数 ,介绍合理可靠的施工工艺。