Thefiniteelementmethodisthemostpopulargeneralpurposetechniqueforcomputingaccuratesolutionstopartialdifferentialequations(PDEs).SincePDEsformthebasisformanymathematicalmodelsinthephysicalsciencesand,increasingly,inotherfieldsaswell,itwouldbedifficulttooverstatetheimportanceofthefiniteelementmethod.

DistributedSystems(3rd)英文无水印原版pdf第3版pdf所有页面使用FoxitReader、PDF-XChangeViewer、SumatraPDF和Firefox测试都可以打开本资源转载自网络，如有侵权，请联系上传者或csdn删除查看此书详细信息请在美国亚马逊官网搜索此书Copyright@2017MaartenvanSteenandAndrewS.TanenbaumPublishedbyMaartenvanSteenThisbookwaspreviouslypublishedby:PearsonEducation,IncISBN:978-15-430573-8-6(printedversion)ISBN:978-90-815406-2-9(digitalversion)Edition:3.Version:01(February2017)AllrightstotextandillustrationsarereservedbyMaartenvanSteenandAndrewS.Tanenbaum.Thisworkmaynotbecopied,reproduced,ortranslatedinwholeorpartwithoutwrittenpermissionofthepublisher,exceptforbriefexcerptsinreviewsorscholanyformofinformationstorageadaptationorwhatever,computersoftware,orbysimilarordissimilarmethodsnowknownordevelopedinthefutureisstrictlyforbiddenwithoutwrittenpermissionofthepublisherToMarielle,max,andelkeMVSToSuzanneBarbara,Marvin,Aronnathan,olivia,andmirteASTCONTENTSPreface1Introduction1.1Whatisadistributedsystem?Characteristic1:Collectionofautonomouscomputingelements2Characteristic2:SinglecoherentsystemMiddlewareanddistributedsystems1.2DesigngoalsSupportingresourcesharingMakingdistributiontransparent12Beingscalable15Pitfalls243Typesofdistributedsystems24Highperformancedistributedcomputing25Distributedinformationsystems34Pervasivesystems1.4Summary522Architectures552.1Architecturalstyles56Layeredarchitectures.57Object-basedandservice-orientedarchitectures62Resource-basedarchitectures64Publish-subscribearchitectures2.2MiddlewareorganizationWrappersInterceptors垂番Modifiablemiddleware752.3SystemarchitectureCONTENTSCentralizedorganizations76Decentralizedorganizations:peer-to-peersystemsHybridarchitectures2.4Examplearchitectures94TheNetworkFilesystem94TheWeb982.5Summary3Processes1033.1Threads..104Introductiontothreads104Threadsindistributedsystems1113.2Virtualization116Principleofvirtualizationapplicationofvirtualmachinestodistributedsystems,1223.3Clients124Networkeduserinterfaces124Client-sidesoftwarefordistributiontransparency1273.4Servers128Generaldesignissues129Objectservers133Example:TheApacheWebserver139Serverclusters,,,,,,,1413.5Codemigration152Reasonsformigratingcode152Migrationinheterogeneoussystems1583.6Summary1614Communication4.1Foundations164LayeredProtocols164TypesofCommunication.1724.2Remoteprocedurecall..173Basicrpcoperation174Parameterpassing178RPC-basedapplicationsupport182VariationsonrPc185Example:dCErPc,.1884.3Message-orientedcommunication193Simpletransientmessagingwithsockets.193Advancedtransientmessaging198Message-orientedpersistentcommunication206Example:IBM'sWebSpheremessage-queuingsystem212Example:AdvancedMessageQueuingProtocol(AMQP)....218DS3.01DOWNLOADEDBYTEWIGOMIXMAIL.INFOCONTENTS4.4Multicastcommunication221Application-leveltree-basedmulticasting221Flooding-basedmulticasting225Gossip-baseddatadissemination2294.5Summary2345Naming2375.1Names,identifiersandaddresses2385.2Flatnaming.241Simplesolutions241Home-basedapproaches245Distributedhashtables246Hierarchicalapproaches2515.3Structurednaming256Namespaces.256Nameresolution259Theimplementationofanamespace264Example:TheDomainNameSystem271Example:TheNetworkFileSystem2785.4Attribute-basednaming283Directoryservices283Hierarchicalimplementations:LDAP285Decentralizedimplementations2885.5Summary2946Coordination2976.1Clocksynchronization.298Physicalclocks299Clocksynchronizationalgorithms3026.2Logicalclocks310Lamport'slogicalclocks310Vectorclocks3166.3Mutualexclusion321322acentralizedalgorithm.322adistributedalgorithm323atoken-ringalgorithm.325adecentralizedalgorithm3266.4Electionalgorithms329Thebullyalgorithm.,..330Aringalgorithm332Electionsinwirelessenvironments333Electionsinlarge-scalesystems.3356.5Locationsystems336DOWNLOADEDBYTEWIGOMIXMAIL.INFODS301VIllCONTENTSGPS:GlobalPositioningSystem337WhengPsisnotanoption339Logicalpositioningofnodes3396.6Distributedeventmatching..343Centralizedimplementations3436.7Gossip-basedcoordination349asgregation349Apeer-samplingservice350Gossip-basedoverlayconstruction3526.8Summary3537Consistencyandreplication3557.1Introduction356Reasonsforreplication356Replicationasscalingtechnique3577.2Data-centricconsistencymodels358Continuousconsistency359Consistentorderingofoperations364Eventualconsistency3737.3Client-centricconsistencymodels375MonotonicreadsMonotonicwrites.379Readyourwrite380Writesfollowreads3827.4ReplicamanagementFindingthebestserverlocation383Contentreplicationandplacement..385Contentdistribution..388Managingreplicatedobjects3937.5Consistencyprotocols.396Continuousconsistency..........396Primary-basedprotocols398Replicated-writeprotocolsCache-coherence403Implementingclient-centricconsistency,,...4077.6Example:CachingandreplicationintheWeb4097.7Summar4208Faulttoleran4238.1Introductiontofaulttolerance424Basicconcepts.424Failuodels427Failuremaskingbyredundancy8.2Processresilience432DS3.01DOWNLOADEDBYTEWIGOMIXMAIL.INFO

一个非常著名的用c语言开发的astrology32占星软件的源代码。
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这个只是方便生成授权，只要填入各个程序的licensehash就能生成不通的应用程序的授权了，licensehash的外置，比原版的生成器方便使用，只要一个生成器就能给你所有的加密程序提供授权的生成了。
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完整英文版IEC61558-1：2017（Ed3.0）Safetyoftransformers,reactors,powersupplyunitsandcombinationsthereof-Part1:Generalrequirementsandtests(变压器、电抗器、电源装置及其组合的安全第1部分：一般要求和试验)。
本标准涉及变压器、电抗器，电源装置及其组合的安全方面，例如电气，热和机械安全。
该文件涵盖以下独立或相关的固定或便携式类型的干式变压器，电源单元，包括开关模式电源单元，电抗器及其组合，在安全领域。
绕组可以被封装或未被封装。
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*Suiteofsimple,portablebenchmarks*Comparesdifferentsystemsperformance*Resultsavailableformostmajorvendors(SUN,HP,IBM,DEC,SGI,PCsincluding200MhzP6's)*Freesoftware,coveredbytheGNUGeneralPublicLicense.*BandwidthbenchmarksoCachedfilereadoMemorycopy(bcopy)oMemoryreadoMemorywriteoPipeoTCP*LatencybenchmarksoContextswitching.oNetworking:connectionestablishment,pipe,TCP,UDP,andRPChotpotatooFilesystemcreatesanddeletes.oProcesscreation.oSignalhandlingoSystemcalloverheadoMemoryreadlatency*MiscellaniousoProcessorclockratecalculation

本文档为《概率论教程(钟开莱)pdf》，可适用于高等教育领域GeneralInformation书名=概率论教程作者=（美）钟开莱

AsaModel-DrivenDevelopmentmethodology(MDD)forthespecificdomain,Domain-SpecificModeling(DSM)hasbeenwidelyandsuccessfullyusedinsystemdesignandanalysisofspecificareas.Inspiteofitsgeneralimportant,duetoinformaldefinitionofDomain-SpecificModelingLanguage(DSMLs),t

完整英文版IEC61010-1：2017CSVSafetyrequirementsforelectricalequipmentformeasurement,control,andlaboratoryuse-Part1:Generalrequirements（测量、控制和实验室用电气设备的安全要求--第1部分一般要求），本标准规定了下列类型的电气设备及其附件的一般安全要求，无论其在何处使用。
a)电气测试和测量设备b)电气工业过程控制设备c)电气实验室设备

Thispaperisasurveyofthetheoryandmethodsofphotogrammetricbundleadjustment,aimedatpotentialimplementorsinthecomputervisioncommunity.Bundleadjustmentistheproblemofrefiningavisualreconstructiontoproducejointlyoptimalstructureandviewingparameterestimates.Topicscoveredinclude:thechoiceofcostfunctionandrobustness;numericaloptimizationincludingsparseNewtonmethods,linearlyconvergentapproximations,updatingandrecursivemethods;gauge(datum)invariance;andqualitycontrol.Thetheoryisdevelopedforgeneralrobustcostfunctionsratherthanrestrictingattentiontotraditionalnonlinearleastsquares.

在日常工作中，钉钉打卡成了我生活中不可或缺的一部分。然而，有时候这个看似简单的任务却给我带来了不少烦恼。 每天早晚，我总是得牢记打开钉钉应用，点击"工作台"，再找到"考勤打卡"进行签到。有时候因为工作忙碌，会忘记打卡，导致考勤异常，影响当月的工作评价。而且，由于我使用的是苹果手机，有时候系统更新后，钉钉的某些功能会出现异常，使得打卡变得更加麻烦。 另外，我的家人使用的是安卓手机，他们也经常抱怨钉钉打卡的繁琐。尤其是对于那些不太熟悉手机操作的长辈来说，每次打卡都是一次挑战。他们总是担心自己会操作失误，导致打卡失败。 为了解决这些烦恼，我开始思考是否可以通过编写一个全自动化脚本来实现钉钉打卡。经过一段时间的摸索和学习，我终于成功编写出了一个适用于苹果和安卓系统的钉钉打卡脚本。