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305 个结果
  • 简介:两个月前我们还在讨论Oracle试图收购JBoss的消息。两个月后的今天.已经尘埃落定。头号Linux厂商Redhat成了.Boss新的所有者。经过这一次的收购行动,Redhat已经成为开源厂商中的巨无霸。借助RedhatEnterpriseLinux+JBoss在企业级市场中巨大号召力,再加上扛着SOA的这个时髦旗号,这个昔日的小红帽俨然已经有和IBM/BEA/Oracle这样的厂商比拼的实力。至于是否真的能够在竞争非常激烈的企业级开发领域分得更多的市场份额。这就得看Redhat的造化了。

  • 标签: LINUX 操作系统 开元软件 虚拟机 Xen技术
  • 简介:接上一期的话题,文档标准之争暂l‘告一段落:微软OpenOfficeXML文档标准没有通过ISO第一阶段投票。不过微软表示,一定会通过明年初的第二轮投票。大家普遍认为,如果某种技术成为ISO国际标准,符合这一标准的软件产品在销售过程中将大大获益。微软此前在市场上与ODF的竞争中,屡屡因此失利。看来为了利润,微软要下恨功夫了。但业界的担心是,OpenOfficeXML标准是否能够真正open,微软是否会保留一部分代码,

  • 标签: 开源软件 Jython 2.2 Python2.2 Python2. 3
  • 简介:Thekeytosurvivalforanyconte-mporarybrandiscrossover,andwhenyourbrandisalifestylethatexpressesitselfinclothing,music,andart,thenfindinganoutletthattraverseseveryleveliscrucial.

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  • 简介:本月很多项目发布了新版本。其中最引人瞩目的当属IronPython的发布。做为一个在.NET平台上动态语言出色的实现,IronPython的意义其实不止于此。微软的.NET战略当初推出之时,其中很大一条就是其跨语言支持能力。可遗憾的是,四年时间过去,除了微软把自己的几门语言移植到了.NET之外,其它几乎没有主流的语言成功移植到.NET上(我这里说的移植是指将语

  • 标签: .NET平台 微软 .NET战略 发布 新版本 移植
  • 简介:如今,舆论在提到开源或是Linux时,似乎总喜欢将其和商业软件体系对立起来。有意无意间将软件巨头们暗喻成夺人钱财的强盗,而把开源软件及其开发者塑造成人类的道德楷模。其实,大家有这样的想法并不奇怪,也许是对当今社会过度商业化的一种最直接反应。但正是这种拔高开源开发者道德水准的观点,将开源社群置于一个相当尴尬的境地。

  • 标签: 开源软件 LINUX 商业化 软件知识体系 软件开发 BUG
  • 简介:Duringtheperiodof1999~2002,theChineseseismologistsmadeaseriousofdevelopmentsinthestudyonseismicsourcesincludingobservations,experimentsandtheory.Inthefieldofobservation,themethodsoftheaccuracylocationofearthquakesources,theinversionofseismicmomenttensorandthemechanismofearthquakesourceareimprovedanddeveloped.Alotofimportantearthquakeeventsarestudiedbyusingthesemethods.Theruptureprocessesoftheseeventsareinvertedandinvestigatedcombinedwiththelocalstressfieldsandthetectonicmomentbyusingthemeasurementsofsurfacedeformation.Inthefieldsofexperimentsandtheory,manydevelopmentsareobtainedincauseofseismicformation,conditionofstressandtectonics,dynamicsofearthquakerupture,rockfractureandnucleationofstrongearthquakes.

  • 标签: 地震波 地震震源 地震力矩张量 震源参数 震源物理
  • 简介:Progress of IMP Laser Ion SourceProgressofIMPLaserIonSource¥ZhaoZhizheng;YangYongfengandCaiXichenLotsOfprogressesofIMPlaserio...

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  • 简介:Recordingsofseismicwavespropagatingfromearthquakesourcetoastationattheearth'ssurfaceareasystemresponsefunction.Theconvolutionoperatorintimedomaincanbesimplifiedasamultiplicationoperatorinfrequencydomain.Wediscussinfrequencydomaintheseparationofsource,pathandsiteeffectsforglobalscalingofearthquakesourceradiation.Alsodiscussedaresourcescalingmodel,faultingmechanism,andtheH/Vinversionproblemswithcrustalandnearsurfacestructures.Grossfeaturesofapparentsourcespectraappeartobenotmuchregion-dependentalthoughtheremaybedifferencebetweentectonicstyleswithinaregionoftectonicmixtureforwhichweneedfurtherstudyasdataaccumulate.Verticalspectramaybeabetterapproachtoapproximatesourceradiation,asithaslesscrustalamplificationeffectsthanhorizontalspectra.TheH/Vratioisevidentlyacomprehensiveindicatorofamplificationeffectsfromnearsurfacetodeepstructure.Thisgivesitpotentialasaninversiontooltodeducesitecrustalstructure.

  • 标签: Earthquake SOURCE seismic wave propagation ATTENUATION
  • 简介:DeformationdatuminsourcemechanisminversionSHOU-WENGONG(巩守文,QING-LIANGWANG(王庆良),YI-QINGZHU(祝意青)andBINGCHEN(陈兵)(SecondCrustalDe...

  • 标签: DEFORMATION DATUM FOCAL mechanism INVERSION LEVELLING
  • 简介:Interaction between two polar cold source and tropical ocean heat source effecting global climate changeXieSimei,BaoChenglana...

  • 标签: South POLE North POLE TROPICAL ocean.
  • 简介:Thispaperdiscussesthediscriminationprinciples.deductionandmethodsforprobingintothesourcecompositionofmantle-derivedmagma.Themagmatophile(incompatible)sourceelementsarenotalloptimaltracersformantlesourcecomposition.Theratiosoftwostrongmagmatophileelements(D<1)ortheratiosoftwotraceelementswiththesameDvaluearenotcontrolledbytheformationmodeandevolutiondegreeofamagma,butmaintainthecharacteristicsoftheircompositioninmantlesourceregionpriortothemagmaformation.Theratiosarerelatedtodifferentmantle-cruststructuresanddynamics.ThemantlesourcecompositionoftheEmeishanBasaltseriesissimilartothatoftheSouthAtlanticRioGrandeRise-WalvisRidgeBasaltsandBrazilcontinental-marginbasalts.Thismayindicatethatthesebasaltseriesmighthavesimilarsourceregionsandtectonicenvironments.

  • 标签: MANTLE-DERIVED IGNEOUS rocks MANTLE COMPOSITION trace
  • 简介:In1970,duringtheexcavationsintheareaoftheGreatTempleofBoghazkǒy(theLowerCity)acuneiformtabletwasfoundthatatonceattractedtheattentionofHittitologists.Thistablet(Bo70/10,KBoXXII2)istheOldHittiteoriginal,writtenintheoldductus,ofKBoIII38(=2BoTU13).Thelatter,knownfromtheautographofM.H.Figulla(1918),isaNewHittitecopywithaverycharacteristicductusandapreferenceforAkkadianformswheretheOldHittiteversionusesHittitewordsor,moreseldom,Sumerograms.Thetext,knownasTheLegendabouttheQueenofKanisandtheCityofZalpa,waspublishedintransliterationandwithacommentarybyH.Otten(1973).

  • 标签: ductus seldom tablet COMMENTARY PREFERENCE SOURCE
  • 简介:Theinversescatteringproblemsaretodetectthepropertyofobstaclesfromthemeasurementsoutsidetheobstacles.Oneofimportantresearchareasinthistopicistherecoveryofboundarypropertyforimpenetrableobstacles.Inthispaper,wewouldliketogiveabriefreviewabouttherecentlydevelopedsingularsourcemethods.Therearethreedifferentmethodsinthiscategory,namely,linearsamplingmethod,pointsourcemethodandprobemethod.Wealsopresentsomerecentnewresultsabouttheprobemethod.

  • 标签: 反转散射 HELMHOLTZ方程 叠加法 边界问题
  • 简介:Forwaterandsoilconservationandwaterpollutioncontrol,itisveryimportanttosimulateandpredicttheloadofsedimentandpollutantduringstorm-runoff.Onthebasisofanalyzingthesimultaneousmeasurementsofflow,sedimentandpollutantsobservedatwatershedoutlet,apracticalsedimentyieldmodelisdevelopedbystandardizingtheloadrate.Theresultsshowthatthestandardizedpollutantyieldequalseffectiverainfallandtheprocessofeffectiveloadyieldisthesameaseffectiverainfallhyetograph.Comparisonwithmeasureddatashowthatthismodelisapplicabletovariouspollutants.

  • 标签: SEDIMENT and nonpoint SOURCE POLLUTANT yield
  • 简介:基于处理15Mt/a的综合精制/化学植物粗略、生产在“从事由任何适当工具精制,石蜡和aromatics最大化综合精制/化学植物的全面价值”的指南下面的乙烯的1.0Mt/a,专注于是必要的研究为在精炼厂和乙烯植物之间的材料的相互的供应的流动图和答案。在分析产品的化工物品板岩,作文和性质以后,优化综合精制/化学工厂以便减少投资和操作费用认识到综合工厂的价值的最大化被建议。

  • 标签: 价值最大化 炼油厂 化工厂 材料供应 优化整合 化学工厂