TRAFFIC-BASED SCHEDULING MECHANISM IN AN IP/ATM ROUTER

Introduction　　 In recentyears,ATM has been installed com-prehensively,especially in the backbone of cam-puses and cities. On account of the differencesamong ATM,IP and other networks[1,2 ] ,how toeffectively integrate them is a very important andcritical issue to ATM and other networks.An IP/ATM router which can interconnect1 55M ATM,1 0 0 M Ethernet,2 M ATM,PPP,2 B D ISDN and X.2 5is under developing in ourlab.In prior work,we have designed its softwarearchitecture[3] .We als…     

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…     

地基雷达干涉测量技术在城轨交通变形监测中的应用

地铁施工可引发大范围地面沉降,容易造成地面塌陷、地下管道及地面建筑物损毁。以武汉地铁8号线梨园站为例,利用地基雷达干涉测量技术(地基In SAR)对其施工引发的不均匀地面沉降进行自动化连续成像监测。监测分析表明,地基InSAR技术能够有效获取地铁施工区域高精度、高分辨率不均匀形变场;大部分地区的形变累积量在10 mm以内,满足地铁施工对周边道路和建筑物影响要求。     

白色路面改为黑色路面的几种结构型式

介绍了采用黑色路面对旧混凝土路面进行修复的情况,通过道路改造的实际情况,探讨了白色路面改造为黑色路面的几种结构型式.     

关于摩托车燃油供给系统的分析与整改

根据市场反馈摩托车起动困难、加不起油、怠速不稳、加油熄火等问题,我们进行了分析与研究,并对摩托车燃油系统进行了分析与整改,解决了问题。     

我国沿海港口物流发展模式探讨

通过对港口发展演变过程、现状布局总结得出我国港口物流发展可供选择的五种模式和趋势,依此建立了构造港口物流发展模式的综合评价指标和港口物流发展模式选择决策评价模型,并结合相关评价指标采用层次分析法提供了一种定性的分析模型,对港口物流的发展规划具有一定参考意义.