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  • 简介:最近,建筑群的新特征联网的一些在不同领域里吸引科学家的注意,并且导致许多种新兴的研究方向。到目前为止,大多数研究工作被结构分析在大规模软件系统在复杂网络特征的发现限制了。这篇论文论述理论基础,设计方法,算法和研究的实验结果。它第一为网络拓扑学强调进化生长的设计方法的意义面向对象(OO)软件系统,并且主张有各种各样的拓扑学特征的网络模型的选择和调整将在设计的进程和OO软件系统的实现上带不可忽略的效果。然后,我们与不同拓扑学特征和软件建模方法的发展分析“在网络模型的进化之间的否定和妥协的否定”的类似的纪律。根据软件模式的生长特征的分析,我们连续建议一个面向对象的软件网络进化生长方法和它的算法。另外,我们也基于复杂网络理论为OO软件系统度量标准建议参数系统。基于这些参数系统,它能分析各种各样的节点的特征,连接并且本地世界,调制网络拓扑学并且指导软件度量标准。所有这些能对详细设计,实现和表演分析有用。最后,我们集中于进化算法的应用程序并且由案例研究表明它。在实验软件工程从我们的早实验把结果与方法论作比较,我们相信建议软件工程设计方法基于复杂网络理论是一条计算软件工程途径。我们主张这个方法应该是极大地为在大规模OO的功能,结构和性能的设计,实现,调整和度量标准有益软件建筑群系统。

  • 标签: 复合网络 进展生长设计方法 软件模式 生长特征 网络软件 优先附件
  • 简介:簇建筑学在高端计算起一个重要作用过去的20年了。与因特网服务,大数据,和云计算的来临,传统的簇面对三挑战:1)在计算,存储器,和I/O能力之中提供灵活系统平衡;2)减少资源分享开销;并且3)探讨低表演力量效率。这份位置报纸建议定义软件的簇(SDC)体系结构处理这些挑战。SDC建筑学继承传统的簇的二个特征:它的建筑学是multicomputer和它泛泛地联合相连。SDC提供二新机制:全球I/O空间(GIO)和遥远的设备的支持硬件的本国的存取(HNA)。应用程序软件能定义从水池由物理簇提供了的资源适合到它的需要的虚拟簇最好,并且传统的簇生态系统不需要修正。我们也讨论一个原型图案和利用SDC建筑学的一个32处理器云服务者的实现。

  • 标签: 软件定义 集群 生态系统 互联网服务 SDC 管理费用
  • 简介:Firegrowthmodelcanpredictfirebehavior,whichcanguidefirefightingactivitiesandassessesfiremanagementpolicies.Thispaperanalyzedthemainfactorsaffectingfiresimulation,andsummariedthecurrentgrowthmodelsincludingempirical,semi-empiricalandphysicalmodels.Thewidelyusedfiregrowthsimulationsoftwareswereoutlinedinthepaper,whichincludePrometheus,BehavePlus,Farsite,etc.Finally,thepaperdiscussedthelimitationsoffiregrowthmodelsandtheirfuturedevelopment.

  • 标签: FOREST FIRE FIRE GROWTH MODEL FIRE
  • 简介:鲍勃·威廉森没有大学学历,并且染上毒瘾。然而,凭借着勤奋和机遇,他从一星期15美元的擦砖工作开始,到最终创建了HORIZON,成为一家拥有180名员工、年收入超过3,000万美元的食堂服务软件开发公司的老板。那么他是如何实现这一转变的呢?《从瘾君子到软件赢家》一文讲述了他的曲折经历,并且生动阐释了勤奋与开拓精神的重要性。

  • 标签: 高校 英语 课外阅读 阅读材料
  • 简介:TheChinesesoftwareindustryhashadalatestart.Althoughithasbeendevelopingfast,itisstillatitsinitialstage.1.IndustryScaleAtpresent,therearemorethan1,800softwareenterprises,withemployeesnumbering100,000.EnterprisesofacertainscaleincludetheFounderGroupCorporation,ChineseSoftwareCorporation,SoftwareGroupCorporationofNortheastUniversity,ShandongZhongchuanSoftwareEngineeringCorporation,YongyouSoftwareGroupCorporation,BeijingHopeGroupCorporation,StoneLifangCompany,

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  • 简介:TheconfigurationmanagementtoolCMThasbeenusedsinceseveralyearsnow,andinquitsdifferentprojects(Virgo,GLAST,LHCb,Auger,Atlas,etc).Thefeaturesofthetoolhavecontinuouslyevolvedaccordingtothegrowingneedsofthedevelopersandtofollowtheincreasingcomplexityofthesoftwarebasesithastoservice,Howevertheoriginalconcepts:readability,simplicity,flexibility,completenesshavebeenpreservedandthesyntanofthecoreelementofthesystem-therequirementsfile-hasbeenalwaysketpbackwardcompatible.MoreandmoreprojectspecificconventionsandneedshavefounrtheirexpressionusingCMT,andsimultaneouslythefocuesetoCMTfeatureshaveevolvedaccordingly,progressivelyraisingimportancetowardslanguagecustomisation,newdocumentgeneratorsproductionofpatterns,packageorganizationandsoftwaredistribution.ThebasicpropertiesoftheCMTtoolkitwillbeshortlypresentedbutthefocusofthediscussionwillbesettotheCMTtoolkitwillbeshortlypresentedbutthefocusofthediscussionwillbesettoptheserecentevolutions,throughtsometypicalexamplesobtainedfromactualprojectsshowingspecificdefinitionsorconventions.Thediscussionisthenextendedtowardsthegeneralizedquestionofthescalabilityinsoftwareproductionandmanagementinthecontextofe.g.Gridtechnologies.TheimpactofusinggenericandhighleveltoolssuchasCMT,whichalreadyoffersseveralsolutions,RPMortheGridtechnologies,inthisrespectwillbepresented.Inparticular,theroleofformalspecificationsforthesoftwareconfigurationappearstobecriticalforquerymechanismsrequiredinmanagementoperationsorinremoteactions.

  • 标签: 软件开发 大项目用软件 软件管理
  • 简介:Anincreasingnumberofcomputersystemsarebeingviewedintermsofautonomousagents.Mostpeoplebelievethatagent-orientedapproachiswellsuitedtodesigningandbuildingcomplexsystems.Yet,todate,littleefforthadbeendevotedtodiscussingtheadvantagesofagent-orientedapproachasamainstreamsoftwareengineeringparadiam.Herebothofthisissuesandtherelationbetweenobject-orientedandagentorientedwillbeargued.Wedescribeanagent-orientedmethodologyandprovideaquotefordesigningaauctionsystem.

  • 标签: 软件工程 面向对象 多代理 代理交互
  • 简介:Hardwareandsoftwareco-designisadesigntechniquewhichdeliverscomputersystemscomprisinghardwareandsoftwarecomponents.Acriticalphaseoftheco-designprocessistodecomposeaprogramintohardwareandsoftware.Thispaperproposesanalgebraicpartitioningalgorithmwhosecorrectnessisverifiedinprogramalgebra.Theauthorsintroduceaprogramanalysisphasebeforeprogrampartitioninganddevelopacollectionofsyntax-basedsplittingrules.Theformerprovidestheinformationformovingoperationsfromsoftwaretohardwareandreducingtheinteractionbetweencomponents,andthelattersupportsacompositionalapproachtoprogrampartitioning.

  • 标签: 计算机 程序设计 代数硬/软件区分算法 软/硬件联合设计
  • 简介:SoftwareRebuildingforSFCControlSystem¥HuangXinmin;GuoKejun;ChenMinglang;ZhangChangshuanandHuJianjunSFC,theinjectorofHIdaL,was...

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  • 简介:一部新款奔驰S280更换发动机控制模块后,使用STAR2000编程巡航功能不起作用,读取发动机和巡航控制系统故障码,没有故障码.我们所使用的编程方法是,读取旧控制模块上的程序,再写到新控制模块上.按编程方法应该没错,为什么巡航功能被取消呢?带着这一问题,我们一起学习奔驰编程新方法,FlashingandSoftwareCaiibrationNumber(SCN)闪存和软件校正码.

  • 标签: 奔驰轿车 编程方法 故障诊断 闪存 软件校正码
  • 简介:ThispaperdescribestheimplementationofasizablesubsetofOpenMPonnetworksofworkstations(NOWs)andthesource-to-sourceOpenMPcompiler(AutoPar)isusedfortheJIAJIAhome-basedsharedvirtualmemorysystem(SVM).ThepapersuggestssomesimplemodificationsandextensionstotheOpenMPstandardforthedifferencebetweenSVMandSMP(symmetricmultiprocessor),atwhichtheOpenMPspecificationisaimed.TheOpenMPtranslatorisbasedonanautomaticparallelizationcompiler,soitispossibletocheckthecorrectnessofthesemanticsofOpenMPprogramswhichisnotrequiredinanOpenMP-compliantimplementation.AutoParismeasuredforfiveapplicationsincludingbothprogramsfromNASParallelBenchmarksandrealapplicationsonaclusterofeightPentiumIIPCsconnectedbya100MbpsswitchedEthernet.TheevaluationshowsthattheparallelizationbyannotatingOpenMPdirectivesissimpleandtheperformanceofgeneratedJIAJIAcodeisstillacceptableonNOWs.

  • 标签: 软件 多处理机均衡 工作站网络 OPENMP
  • 简介:SinceitserliestyearsofR&D[1],theGEANT4simulationtoolkithasbeendevelopedfollowingsoftwareprocessstandardswhichdictatedtheoverallevolutionoftheproject.Thecomplexityofthesoftwareinvolved,thewideareasofapplicationofthesoftwareproduct,thehugeamountofcodeandCategorycomplexity,thesizeanddistributednatureoftheCollaborationitselfareallingredientswhichinvolveandcorrelatetogetherawidevarietyofsoftwareprocesses.Althoughin"production"andavailabletothepublicsinceDecember1998,theGEANT4softwareproduct[1]includesCategoryDomainswhicharestillunderactivedevelopment.Thereforetheyrequiredifferenttreatmentalsointermsofimprovementofthedevelopmentcycle,system,testingandusersupport,ThisarticleismeanttodescribesomeofthesoftwareprocessesastheyareappliedinGEANT4forbothdevelopment,testingandmaintenanceofthesoftware.

  • 标签: GEANT4 软件处理 软件开发
  • 简介:Asoftwareforthemanagementofcomputeraideddesign(CAD)drawingswasdeveloped.Itcanbeusedtoclassifyandregisterinformationincludinggeometricfeaturesofthedrawings,andtosearchappropriatereferencedrawingsmatchingthegivenconditionsofanewdesign.ThethumbnailsofthedrawingscanbedisplayedinanorderofpreferenceandcanbeusedtozoomandaccessthePDFfileorCADdataofaselecteddrawing.Thethumbnailsandthedatastructurearetwokeyelementsofthesoftware.

  • 标签: 计算机辅助设计 图纸管理 软件开发 PDF文件 CAD数据 管理软件
  • 简介:WiththedevelopmentofWeb2.0,moreandmorepeoplechoosetousetheInternettoexpresstheiropinions.Allthisopinionstogetherintoanewformtextwhichcontainsalotofvaluableemotionalinformation,thisiswhyhowtodealwiththesetextsandanalysistheemotionalinformationissignificantforus.Wegetthreemaintasksofsentimentanalysis,includingsentimentextraction,sentimentclassification,sentimentapplicationandsummarization.Inthispaper,basedontheRsoftware,weintroducedthestepsofsentimentanalysisindetail.Finally,wecollectthemoviereviewsfromtheInternet,anduseRsoftwaretodosentimentanalysisinordertojudgetheemotionaltendencyofthetext.

  • 标签: TEXT SENTIMENT Analysis R SOFTWARE Information
  • 简介:TheAlphaMagneticSpectrometer(AMS)isanexperimenttosearchinspacefordarkmatter,missingmatterandantimatterscheduledforinstallationontheInternationalSPaceStation(ISS)Alpha.AMSdetectorhadprecursiveflightinJune1998onboardthespaceshuttleDiscoveryduringSTS91,Morethan100Meventsbeencollectedandanalyzed.Thedetectorwillhaveanotherflightinthefallofyear2003formorethanthreeyearsonISS.ThedatawillbetransmittedfromISStoNASAMarshallSpaceFlightCenter(Huntsvile,Alabama)andthentoMITandCERNforprocessingandanalysis,InthisreportwedescribeAMSsoftwareinparticularconditionsdatabaseanddataprocessingsoftware.

  • 标签: α磁谱仪实验 数据处理 OO软件
  • 简介:Anincreasingnumberofcomputersystemsarebeingviewedintermsofautonomousagents.Mostpeoplebelievethatagent-orientedapproachiswellsuitedtodesignandbuildcomplexsystems.Yet.todate,littleefforthadbeendevotedtodiscusstheadvantagesofagent-orientedapproachasamainstreamsoftwareengineeringparadigm.Herebothofthisissuesandtherelationbetweenobject-orientedandagent-orientedwillbeargued.wedescribeanagent-orientedmethodologyandprovideaquotefordesigninganauctionsystem.

  • 标签: AGENT-ORIENTED APPROACH SOFTWARE ENGINEERING MULTI-AGENT SYSTEMS
  • 简介:这篇论文处理格子技术没象1990年代的网技术一样快传播的问题。在过去的10年里,可观的努力被放进格子计算。许多进步被取得了;更重要地,基础质问;这块地的必要问题正在出现。这篇论文集中于网格系统软件研究的区域,;主张网格系统软件的可用性必须被提高。它识别四个可用性问题,从国际格子研究经验绘画。它也在探讨这些挑战由Vega格子队介绍进展。

  • 标签: 网格技术 系统软件 可用性 分布式系统