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利用ATM构造宽带INTERNET骨干网 总被引:2,自引:0,他引:2
本文分析了传统的Internet骨干网的组网方案纯路由器网络的成功及其所面临的挑战,提出在网络核心引入交换技术,通过采用ATM构造带宽Internet骨干网,可以构更大规模的网络,使网络运营者受益,并且为将来Interne提供综合业务奠定坚实的基础。 相似文献
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Leida Bourgeois 《电子工业专用设备》2011,40(11):60-61
泰瑞达的Eagle测试事业部为ATE工业生产统一的软件和硬件解决方案.ETS开发了一个高度直观,易于使用的图形界面来开发测试程序。EagleVision与EagleVisionMST软件套件,旨在帮助制造商加快产品从开发到生产。这两个软件套件为制造商提供了缩短编程和调试时间的竞争优势,从而降低了前期开发成本。重点介绍E... 相似文献
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Strong convergence theorems for approximation of common fixed points of asymptoticallyφ-quasi-pseudocontractive mappings and asymptoticallyφ-strictly- pseudocontractive mappings are proved in real Banach spaces by using a new compos- ite implicit iteration scheme with errors.The results presented in this paper extend and improve the main results of Sun,Gu and Osilike published on J.Math.Anal. Appl. 相似文献
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The cloudy Silwet L-77 aqueous solution on the concentration range from 0.5%to 50%was investigated by dielectric relaxation spectroscopy.The concentration dependence of phase microstructure was confirmed by means of analyzing the dielectric parameters of bulk solution.The relaxation behavior was assigned to the interfacial polarization between the micelle and the medium,and the relaxation distribution parameter was used to figure the shape transition from sphere to ellipsoid with the concentration increasing.The synchronous reduction of permittivity and conductivity indicated the formation of the lamellar phase. As compensation,the quantity of the surfactant liquid phase gradually decreased,whose shape constantly kept ellipsoidal. 相似文献
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Xue Jing Yanga Ya Ling Yang Wei Zhenb Mou Sheng Liua Jun Hong Chaia a Faculty of Life Science Technology Kunming University of Science Technology Kunming China b Kunming Fruit Business Economics Co.Ltd. Kunming China 《中国化学快报》2009,20(4)
An modified laminar crystal sodium silicate(A1-SKS-6) was synthesized by spray drying and high temperature crystallization using sodium silicate as silicon source,Al atom as inorganic source and hexadecyltrimethy ammonium bromide(CTMAB) as the structure template.The hydrothermal stability of product was at least 1 h.The synthesized material was characterized by XRD and SEM.The results indicated that shape and intensity of XRD diffraction peak at 2θtook changes,but raw materialδphase crystal form kept unc... 相似文献
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早期的OSS非常专有化和封闭,在功能上是垂直的,一种OSS只专注于一种功能,与其他的OSS没有直接的交互。现代OSS则具有开放和模块化的结构、开放的接口、不同组建模块之间的交互和流程自动化等特点。在网络环境日益复杂、网络规模和用户数量不断扩大以及市场不断变化的情况下,国内的运营商面临严峻的挑战。惠普公司的电信网运营支撑系统解决方案为电信运营商提供了一种选择。 相似文献
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EXISTENCE OF SOLUTIONS OF A FAMILY OF NONLINEAR BOUNDARY VALUE PROBLEMS IN L~2-SPACES 总被引:1,自引:0,他引:1
Wei Li Zhou HaiyunSchool of Mathematics Statistics Hebei University of Economics Business Shijiazhuang China. Inst.of Appl.Math.and Mech. Ordnance Engineering College Shijiazhuang China. 《高校应用数学学报(英文版)》2005,(2)
§ 1 Introduction and preliminariesThe equations related to the p- L aplacian operatorΔp have been studied in differentaspects[1— 4 ] sinceΔp arises from a variety of physical phenomena such as non Newtonianfluids,reaction- diffusion problems,etc.In this paper,the following equation(1) which canbe regarded as an extension of those in[1— 4 ]will be discussed:- div(α(gradu) ) +|u(x) |p- 2 u(x) +g(x,u(x) ) =f (x) a.e. onΩ-〈n,α(gradu)〉∈βx(u(x) ) ,a.e.onΓ . (1) More details can b… 相似文献
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今年6月,笔者参加了黑龙江省邮电管理局赴法国电信局高级管理培训班,对法国电信的经营管理,网络运行管理系统进行了全面的参观学习有关专家全面系统地介绍了法国电信的经营管理情况,中法双方进行了经验交流。 相似文献
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考虑速度和温度同时在加法白噪声扰动下的随机Boussinesq方程组的解的渐近特征.可以接轨道得到该随机方程组的唯一解,并可以验证该解生成随机动力系统,进而证明了该随机动力系统存在随机吸引子. 相似文献