模式对比和研究问题的一些思路.doc

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专业外文翻译 题 目 A Tale of Clouds:Paradigm Comparisions and Some Thoughts on Research Issues 系 (院) 计算机科学技术系 专 业 计算机网络技术 班 级 2010级1班 学生姓名 刘永霞 学 号 1023110517 指导教师 朱茜 职 称 讲师 二〇一三年五月 二十 日 A?Tale?of?Clouds:?Paradigm?Comparisons? and?SomeThoughts?on?Research?Issues prodromes Cloud?computing?is?a?paradigm?that?focuses?on?sharing?data??and?computations?over?a?scalable?network?of?nodes.?Examples?of??such?nodes?include?end?user?computers,?datacenters,?and?Web??Services.?We?term?such?a?network?of?nodes?as?a?cloud.?An??application?based?on?such?clouds?is?taken?as?a?cloud?application.? This?paradigm?is?increasingly?popular?in?the?industry,?where?industrial?leaders?such?as?Microsoft?[26],?Google?[2],?and?IBM?[5]?strongly?promote?the?paradigm?in?recent?years.?An?early?attempt?to?formulate?cloud?computing?dates?back?to?at?least?1997?[8].?However,?to?our?best?knowledge,?the?adoption?and?promotion?of?cloud?computing?has?been?slow?until?2007?[9]. We?observe?that?the?history?of?early?industrial?adoptions?of?cloud?computing?share?some?common?milestones?with?that?of?service?computing?[4].?For?example,?it?took?service?computing?[27]?a?long?time?(ten?years?or?so)?to?receive?worldwide?support?from?leading?companies?like?IBM,?Microsoft?[25],?BEA,?and?Oracle.?Similarly,?it?has?been?many?years?since?the?early?formalization?effort?[8]?toward?cloud?computing.?Besides,?the?wide?adoption?of?a?computing?paradigm?usually?depends?highly?on?the?maturity?of?supportingtechnologies?and?industry?recognitions.?Service?computing?has?become?much?more?popular?since?the?success?of?Web?services,?although?a?Web?service?is?only?one?of?the?technologies?to?fulfill?the?notion?of?service?orientation?[4].?Similarly,?the?distributed?computing?community?has?pointed?out?that?many?distributed?computing?techniques?for?cloud?computing?have?been?mature?[7][10][11].?Many?companies?such?as?Dell?and?IBM?have?begun?to?ship?cloud?computing?machines?[5][10]. Last?but?not?the?least,?in?either?service?comput

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