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

TDOApositioninginNLOSscenariosbyparticlefiltering

rtcm3decoder在实时数据处理中，需要使用到RTCM格式的数据，其中包括观测数据流和广播星历等。
=============================================================TheUniversityofNewSouthWales,Australia TheSchoolofSurveying&SpatialInformationSystemsSatelliteNavigationAndPositioningLaboratoryAuthorYongHeo(yong.heo@unsw.edu.au)LastModified05/FEB/2009Versionrtcm3decoderversion2.3 -GPSobservationmessagetype: 1001~1004 -AntennareferencepointX,Y,Z: 1005~1006 -Antennadescriptionandserialnumber:1007~1008 -GLONASSobservationmessagetype: 1009~1012 -GenerateRINEXfile -query&displayasouceinfomration

WiththedevelopmentofMEMSsensors,pedestriannavigationhasbeenapopularresearch.Thepaperrealizesstepdetectionandestimationforsteplengthbyonlyverticalaccelerometer.Itdeterminesinitialheadingusingaccelerometersandmagnetometersandcalculateslatterheadingusinggyroscopesbystrap-downinertialnavigationalgorithm.Afterwards,itachievesthepositioninggoalforpedestrianusingdeadreckoningmethod.Definitively,theeffectivenessofthisapproachisdemonstrated

Thisneweditiontotheclassicbookbyggplot2creatorHadleyWickhamhighlightscompatibilitywithknitrandRStudio.ggplot2isadatavisualizationpackageforRthathelpsuserscreatedatagraphics,includingthosethataremulti-layered,withease.Withggplot2,it'seasyto:producehandsome,publication-qualityplotswithautomaticlegendscreatedfromtheplotspecificationsuperimposemultiplelayers(points,lines,maps,tiles,boxplots)fromdifferentdatasourceswithautomaticallyadjustedcommonscalesaddcustomizablesmoothersthatusepowerfulmodelingcapabilitiesofR,suchasloess,linearmodels,generalizedadditivemodels,androbustregressionsaveanyggplot2plot(orpartthereof)forlatermodificationorreusecreatecustomthemesthatcapturein-houseorjournalstylerequirementsandthatcaneasilybeappliedtomultipleplotsapproachagraphfromavisualperspective,thinkingabouthoweachcomponentofthedataisrepresentedonthefinalplotThisbookwillbeusefultoeveryonewhohasstruggledwithdisplayingdatainaninformativeandattractiveway.SomebasicknowledgeofRisnecessary(e.g.,importingdataintoR).ggplot2isamini-languagespecificallytailoredforproducinggraphics,andyou'lllearneverythingyouneedinthebook.Afterreadingthisbookyou'llbeabletoproducegraphicscustomizedpreciselyforyourproblems,andyou'llfinditeasytogetgraphicsoutofyourheadandontothescreenorpage.TableofContentsPartIGettingStartedChapter1IntroductionChapter2GettingStartedwithggplot2Chapter3ToolboxPartIITheGrammarChapter4MasteringtheGrammarChapter5BuildaPlotLayerbyLayerChapter6Scales,AxesandLegendsChapter7PositioningChapter8ThemesPartIIIDataAnalysisChapter9DataAnalysisChapter10DataTransformationChapter11ModellingforVisualisationChapter12Programmingwithggplot2

MohinderS.Grewal(作者),‎LawrenceR.Weill(作者),‎AngusP.Andrews(作者)

Amethodofestimatingtherelativeclocksbetweentwospaceborneglobalpositioning.system(GPS)receiversbasedonthesingle-difference(SD)observationsisinvestigatedin.thispaper.Especially,theadvantagesofintroducingadouble-difference(DD)solution.constraint,includingtheorbitsandambiguities,arediscussedwiththesimulateddata.andtherealdataofGravityRecoveryAndClimateExperiment(GRACE)satellites.The.theoreticalaccuracyanalysisshowsthattheaccuracyofthere

出版日期:2013年12月5日Thisbookisanin-depth,systematicandstructuredtechnicalreferenceon3GPP'sLTE-Advanced(Releases10and11),coveringtheory,technologyandimplementation,writtenbyanauthorwhohasbeeninvolvedintheinceptionanddevelopmentofthesetechnologiesforover20years.Thebooknotonlydescribestheoperationofindividualcomponents,butalsoshowshowtheyfitintotheoverallsystemandoperatefromasystemsperspective.Uniquely,thisbookgivesin-depthinformationonupperprotocollayers,implementationanddeploymentissues,andservices,makingitsuitableforengineerswhoareimplementingthetechnologyintofutureproductsandservices.Reflectingtheauthor's25plusyearsofexperienceinsignalprocessingandcommunicationsystemdesign,thisbookisidealforprofessionalengineers,researchers,andgraduatestudentsworkingincellularcommunicationsystems,radioair-interfacetechnologies,cellularcommunicationsprotocols,advancedradioaccesstechnologiesforbeyond4Gsystems,andbroadbandcellularstandards.Features:anend-to-enddescriptionofLTE/LTE-Advancedtechnologiesusingatop-downsystemsapproach,providinganin-depthunderstandingofhowtheoverallsystemworks;detailedalgorithmicdescriptionsoftheindividualcomponents'operationandinter-connection;strongemphasisonimplementationanddeploymentscenarios,makingthisaverypracticalbook;anin-depthcoverageoftheoreticalandpracticalaspectsofLTEReleases10and11;andclearandconcisedescriptionsoftheunderlyingprinciplesandtheoreticalconceptstoprovideabetterunderstandingoftheoperationofthesystem'scomponents.Itcoversallessentialsystemfunctionalities,features,andtheirinter-connectionsbasedonaclearprotocolstructure,includingdetailedsignalflowgraphsandblockdiagrams.Itincludesmethodologiesandresultsrelatedtolink-levelandsystem-levelevaluationsofLTE-Advanced.ItprovidesunderstandingandinsightintotheadvancedunderlyingtechnologiesinLTE-AdvanceduptoandincludingRelease11:multi-antennasignalprocessing,OFDM,carrieraggregation,coordinatedmulti-pointtransmissionandreception,eICIC,multi-radiocoexistence,E-MBMS,positioningmethods,real-timeandnon-real-timewirelessmultimediaapplications.

《C专家编程》，英文名《ExpertCProgramming》，作者：【美】PetervanderLinden，翻译：徐波。
出版社：人民邮电出版社，ISBN：9787115171801。
PDF格式，大小7.6MB。
内容简介：《c专家编程》展示了最优秀的c程序员所使用的编码技巧，并专门开辟了一章对c++的基础知识进行了介绍。
　　书中c的历史、语言特性、声明、数组、指针、链接、运行时、内存以及如何进一步学习c++等问题进行了细致的讲解和深入的分析。
全书撷取几十个实例进行讲解，对c程序员具有非常高的实用价值。
　　本书可以帮助有一定经验的c程序员成为c编程方面的专家，对于具备相当的c语言基础的程序员，本书可以帮助他们站在c的高度了解和学习c++目录：第1章　c：穿越时空的迷雾　　1.1　c语言的史前阶段　　1.2　c语言的早期体验　　1.3　标准i/o库和c预处理器　1.4　k&rc　1.5　今日之ansic　1.6　它很棒，但它符合标准吗　　1.7　编译限制　1.8　ansic标准的结构　　1.9　阅读ansic标准，寻找乐趣和裨益　　1.10　“安静的改变”究竟有多少安静　　1.11　轻松一下——由编译器定义的pragmas效果　第2章　这不是bug，而是语言特性　　2.1　这关语言特性何事，在fortran里这就是bug呀　　2.2　多做之过　2.3　误做之过　　2.4　少做之过　　2.5　轻松一下——有些特性确实就是bug　　2.6　参考文献　第3章　分析c语言的声明　.　3.1　只有编译器才会喜欢的语法　　3.2　声明是如何形成的　　3.3　优先级规则　　3.4　通过图表分析c语言的声明　　3.5　typedef可以成为你的朋友　　3.6　typedefintx[10]和#definexint[10]的区别　　3.7　typedefstructfoo{...foo;}的含义　　3.8　理解所有分析过程的代码段　　3.9　轻松一下——驱动物理实体的软件　第4章　令人震惊的事实：数组和指针并不相同　　4.1　数组并非指针　　4.2　我的代码为什么无法运行　　4.3　什么是声明，什么是定义　　4.4　使声明与定义相匹配　　4.5　数组和指针的其他区别　　4.6　轻松一下——回文的乐趣　第5章　对链接的思考　　5.1　函数库、链接和载入　　5.2　动态链接的优点　　5.3　函数库链接的5个特殊秘密　　5.4　警惕interpositioning　　5.5　产生链接器报告文件　　5.6　轻松一下——看看谁在说话：挑战turing测验　第6章　运动的诗章：运行时数据结构　　6.1　a.out及其传说　　6.2　段　　6.3　操作系统在a.out文件里干了些什么　　6.4　c语言运行时系统在a.out里干了些什么　　6.5　当函数被调用时发生了什么：过程活动记录　　6.6　auto和static关键字　　6.7　控制线程　　6.8　setjmp和longjmp　　6.9　unix中的堆栈段　　6.10　ms-dos中的堆栈段　　6.11　有用的c语言工具　6.12　轻松一下——卡耐基-梅隆大学的编程难题　6.13　只适用于高级学员阅读的材料第7章　对内存的思考第8章　为什么程序员无法分清万圣节和圣诞节第9章　再论数组　第10章　再论指针　第11章　你懂得c，所以c++不在话下附录a　程序员工作面试的秘密附录b　术语表

High-precisioninter-satellitereal-timerelativepositioningisakeytechniqueusedinsatelliteformationflying.AnadaptiveUKFmethodisproposedforascenarioofdouble-satelliteformationtodeterminatetheinter-satelliterelativepositionbasedonthemeasurementsofdual-frequencyP-codeanddual-frequencycarrierphaseofGPSandinter-satellitedistance.Simulationresultsshowthatthenewmethodmayimprovethefilteringstabilityandtheestimationprecisionofrelativeposition

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。