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ATM和千兆位以太网是在网络主干应用中相互竞争的两种主要技术，千兆位以太网的出现能否取代ATM技术，有必要对千兆位以太网和ATM这两种技术进行比较。 相似文献
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技术说明之ATM网络与以太网的对比当前千兆以太网与ATM网络主要应用于校园网或企业网主干上,但ATM网与千兆以太网各具优势。(一) 高速网络相容性 相似文献
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目前的校园网络的主干网，大多以快速以太网，ATM和千兆以太网为主．近采，一种新的以太网标准——万兆以太网标准的出现，使得校园网络的建设向更高的速度发展。本文简单地介绍了万兆以太网协议的特点．并畅想了万兆以太网的应用前景。 相似文献
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对校园网络规划设计中涉及的FDDI技术、ATM技术、交换式快速以太网等网络技术进行比较筛选，挑选出最为经济、实用的主干网模式，并结合实际探讨交换式快速以太网的管理应用。 相似文献
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目前的校园网络的主干网,大多以快速以太网, ATM和千兆以太网为主,近来,一种新的以太网标准--万兆以太网标准的出现,使得校园网络的建设向更高的速度发展。本文简单地介绍了万兆以太网协议的特点,并畅想了万兆以太网的应用前景。 相似文献
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毕宇锋 《安顺师范高等专科学校学报》2006,8(4):98-100
文章讨论了千兆以太网和ATM的特点及其适用范围,重点分析西部欠发达地区普通中小学在校园网建设中如何在两种主流的骨干网络技术中确定适当的网络技术,并简要说明在网络建设中要遵循的原则. 相似文献
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目前校园网络的主干网 ,大多以快速以太网、ATM和千兆以太网为主 ,但全球的研究人员正在开发速度比现有的以太网更宽更快的下一代网络——万兆以太网 ,它将给校园网络带来完全不可想象的新体验。本文对万兆以太网的技术创新、特点、在校园的应用前景和发展趋势进行描述。 相似文献
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ATM目前已经和千家万户紧密联系在一起，它既具有电路交换网络中速率的独立性，又具有分组交换网络中对任意速度的适应性，在需要承载多业务的电信级网络中，ATM仍然是主要选择对象，随着Internet的广泛延伸和应用的不断增多，以及Internet终端－计算机功能的进一步增强，ATM的地位岌岌可危，但ATM与IP的结合将会补充了ATM的工作中许多不足，随着技术不断的发展，ATM被其他新型技术取代不可避免。 相似文献
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张小虎 《中国科教创新导刊》2012,(32):197-199
数字语言实验室主要由教师主机(兼服务器)、中央控制器、外部设备、网络交换机、学生单元及软件部分组成,按网络结构类型可分为ATM分组交换网、ATM+TCP/IP双网络和TCP/IP以太网,按学生单元类型可分为数字终端型和计算机网络型.当前,在数字语言实验室的网络结构设计中,TCP/IP以太网已经取代ATM网成为发展主流,学生单元直接采用“PC+软件”的方式取代硬件数字终端里然是更好的思路. 相似文献
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介绍多媒体通信中所涉及的信号压缩，同步，ATM等几项关键技术，着重分析了在多媒体环境下电话网，以太网，分组交换远程网，FDDI，ISDN等几大网络的特点，提出了实现B－ISDN的发展步骤。 相似文献
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《海外英语》2007,(5):10-11
Many college freshmen arrive woefully unprepared to do college work, and as disadvantaged populations continue to grow, the share of the American work force that has made it through college is expected to plummet. Many experts blame that educational failure not just on high schools but also on colleges. School & College, a special report by The Chronicle, looks at efforts to fix the system. What reforms would better prepare students for college? What should schools and colleges be doing differently? How should state and federal officials help? 相似文献
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《海外英语》2007,(4):36
There are numbers of crossroads on our long and unpredictable life journey where we totally have no idea about which direction to choose. No matter what our decision is, we should not turn back, but face the music and go ahead instead. I am this kind of girl who always does try without regretting, one example is how I dealt with my love. 相似文献
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Migration occurs behind a variety of reasons and has a great effect on the whole world. People may migrate in order to improve their economic situation, or in order to escape civil strife, persecution, and environmental disasters. The impact of migration is complex, bringing both benefits anddisadvantages. This paper briefly talks about the causes of migration, the allocation of benefits, and the ways in which individual countries and the international community deal with this important subject. 相似文献
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Sister Carrie is one of the most controversial characters in American literature.Thought as a "fallen woman" firstly,she was defined as a "new woman" by some critics later. However, by digging into the motivaton behind the whole process of Carrie's "success", the relationship between Carrie and her creator (the author), the social conditions of then American, it can be found that Carrie has never been free-standing on her thought and she has never found her real-sdf even after becoming a famous actress. In a society dominated by mass consumerism Carrie is only an adherent of her own desires. She also is a representative of all those country girls flooded into cities, a symbol and a sacrifice of the urbanization of America in a time countryside was overcome by cities. 相似文献
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RUZBEHANI Mohsen 《重庆大学学报(英文版)》2004,3(1):20-25
1.IntroductionOne-cyclecontrolmethod,whichwasproposedaboutonedecadeago[1],hasbecomeanattractivemethodinspecialfieldssuchaspowerfactorcorrection[2-6],switchingamplifiers[7,8],etc.Themainideaofthiscontrollerisbasedonintegrationofdiodevoltageinone-cycleandforcesittobeexactlyequaltothereferencevalue.Themainadvantageofthiscontrollerisitsrealtimeabilitytorejectthevariationofinputvoltage[1].Despitethisgreatability,ithasnogoodperformancesinrejectingofloaddisturbanceandfollowingreferencecommands.Espec… 相似文献
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唐芳 《读与写:教育教学刊》2008,5(6)
During interview with English majors, it was found that a majority of students expressed disappointment with their experience of English literature classes. Students' dislike of learning English literature appears to be the major problem of teaching English literature in China. Reader response approach is a good way to solve this problem. In this paper, I explain the rationale behind the reader response approach, such as its origin, definition, features, assumptions, and strategies. Then I illustrate how reader response approach works as a teaching strategy by presenting several teaching models. At last I evaluate its usefuiness for teachers and present the advantages of reader response approach in Chinese context. 相似文献