ElectromagneticFieldTheoryFundamentals2nded-B.Guru,H.Hiziroglu本书简明易懂，贴近读者，深受广大师生欢迎。
　　本书包含许多实例、问题、章末小结和适当的背景材料。
书中首先介绍静电磁场和静磁场的基本概念，继而讲解麦克斯韦尔方程、电磁传播、电磁传输和电磁辐射。
另外，还增加了关于有限元法和有限差分法的章节以及关于史密斯圆图的详细附录。
　　1ELECTROMAGNETICFIELDTHEORY1.1Introduction1.2FieldConcept1.3VectorAnalysis1.4DifferentialandIntegralFormulations1.5StaticFields1.6Time-VaryingFields1.7ApplicationsofTime-VaryingFields1.8NumericalSolutions1.9FurtherStudy2VECTORANALYSIS2.1Introduction2.2ScalarandVectorQuantities2.3VectorOperations2.4TheCoordinateSystems2.5ScalarandVectorFields2.6DifferentialElementsofLength,Surface,andVolume2.7Line,Surface,andVolumeIntegrals2.8TheGradientofaScalarFunction2.9DivergenceofaVectorField2.10TheCurlofaVectorField2.11TheLaplacianOperator2.12SomeTheoremsandFieldClassifications2.13VectorIdentities2.14Summary2.15ReviewQuestions2.16Problems3ELECTROSTATICS3.1Introduction3.2Coulomb’sLaw3.3ElectricFieldIntensity3.4ElectricFluxandElectricFluxDensity3.5TheEIectricPotential3.6ElectricDipole3.7MaterialsinanElectricField3.8EnergyStoredinanEIectricField3.9BoundaryConditions3.10CapacitorandCapacitance3.11Poisson’sandLaplace’sEquations3.12MethodofImages3.13Summary3.14ReviewQuestions3.15Problems4STEADYELECTRICCURRENTS4.1Introduction4.2NatureofCurrentandCurrentDensity4.3ResistanceofaConductor4.4TheEquationOfContinuity4.SRelaxationTime4.6Joule’sLaw4.7SteadyCurrentinaDiode4.8BoundaryConditionsforCurrentDensity4.9AnalogyBetweenDandJ4.10TheElectromotiveForce4.11Summary4.12ReviewQuestions4.13Problems1ELECTROMAGNETICFIELDTHEORY1.1Introduction1.2FieldConcept1.3VectorAnalysis1.4DifferentialandIntegralFormulations1.5StaticFields1.6Time-VaryingFields1.7ApplicationsofTime-VaryingF

《快学Scala》英文第二版：ScalafortheImpatientSecondEditionCayS.Horstmann目录：1THEBASICSA111.1TheScalaInterpreter11.2DeclaringValuesandVariables41.3Co妹妹onlyUsedTypes51.4ArithmeticandOperatorOverloading61.5MoreaboutCallingMethods81.6TheapplyMethod91.7Scaladoc10Exercises152CONTROLSTRUCTURESANDFUNCTIONSA1172.1ConditionalExpressions182.2StatementTermination192.3BlockExpressionsandAssignments20viiContents2.4InputandOutput212.5Loops222.6AdvancedforLoops242.7Functions252.8DefaultandNamedArgumentsL1262.9VariableArgumentsL1262.10Procedures282.11LazyValuesL1282.12Exceptions29Exercises313WORKINGWITHARRAYSA1353.1Fixed-LengthArrays353.2Variable-LengthArrays:ArrayBuffers363.3TraversingArraysandArrayBuffers373.4TransformingArrays383.5Co妹妹onAlgorithms403.6DecipheringScaladoc413.7MultidimensionalArrays423.8InteroperatingwithJava43Exercises444MAPSANDTUPLESA1474.1ConstructingaMap484.2AccessingMapValues484.3UpdatingMapValues494.4IteratingoverMaps504.5SortedMaps504.6InteroperatingwithJava504.7Tuples514.8Zipping52Exercises52viiiContents5CLASSESA1555.1SimpleClassesandParameterlessMethods555.2PropertieswithGettersandSetters565.3PropertieswithOnlyGetters595.4Object-PrivateFields605.5BeanPropertiesL1615.6AuxiliaryConstructors625.7ThePrimaryConstructor635.8NestedClassesL166Exercises686OBJECTSA1716.1Singletons716.2CompanionObjects726.3ObjectsExtendingaClassorTrait736.4TheapplyMethod736.5ApplicationObjects746.6Enumerations75Exercises777PACKAGESANDIMPORTSA1797.1Packages807.2ScopeRules817.3ChainedPackageClauses837.4Top-of-FileNotation837.5PackageObjects837.6PackageVisibility847.7Imports857.8ImportsCanBeAnywhere857.9RenamingandHidingMembers867.10ImplicitImports86Exercises87ixContents8INHERITANCEA1918.1ExtendingaClass918.2OverridingMethods928.3TypeChecksandCasts938.4ProtectedFieldsandMethods948.5SuperclassConstruction948.6OverridingFields958.7AnonymousSubclasses978.8AbstractClasses978.9AbstractFields978.10ConstructionOrderandEarlyDefinitionsL3988.11TheScalaInheritanceHierarchy1008.12ObjectEqualityL11028.13ValueClassesL2103Exercises1059FILESANDREGULAREXPRESSIONSA11099.1ReadingLines1099.2ReadingCharacters1109.3ReadingTokensandNumbers1119.4ReadingfromURLsandOtherSources1119.5ReadingBinaryFiles1129.6WritingTextFiles1129.7VisitingDirectories1129.8Serialization1139.9ProcessControlA21149.10RegularExpressions1169.11RegularExpressionGroups117Exercises11810TRAITSL112110.1WhyNoMultipleInheritance?12110.2TraitsasInterfaces12310.3TraitswithConcreteImplementations124xContents10.4ObjectswithTraits12510.5LayeredTraits12510.6OverridingAbstractMethodsinTraits12710.7TraitsforRichInterfaces12710.8ConcreteFieldsinTraits12810.9AbstractFieldsinTraits13010.10TraitConstructionOrder13010.11InitializingTraitFields13210.12TraitsExtendingClasses13310.13SelfTypesL213410.14WhatHappensundertheHood135Exercises13711OPERATORSL114111.1Identifiers14211.2InfixOperators14311.3UnaryOperators14311.4AssignmentOperators14411.5Precedence14411.6Associativity14511.7TheapplyandupdateMethods14611.8ExtractorsL214711.9ExtractorswithOneorNoArgumentsL214911.10TheunapplySeqMethodL214911.11DynamicInvocationL2150Exercises15312HIGHER-ORDERFUNCTIONSL115712.1FunctionsasValues15712.2AnonymousFunctions15912.3FunctionswithFunctionParameters16012.4ParameterInference16012.5UsefulHigher-OrderFunctions16112.6Closures162xiContents12.7SAMConversions16312.8Currying16412.9ControlAbstractions16612.10ThereturnExpression167Exercises16813COLLECTIONSA217113.1TheMainCollectionsTraits17213.2MutableandI妹妹utableCollections17313.3Sequences17413.4Lists17513.5Sets17713.6OperatorsforAddingorRemovingElements17813.7Co妹妹onMethods18013.8MappingaFunction18213.9Reducing,Folding,andScanningA318413.10Zipping18713.11Iterators18813.12StreamsA318913.13LazyViewsA319013.14InteroperabilitywithJavaCollections19113.15ParallelCollections193Exercises19414PATTERNMATCHINGANDCASECLASSESA219714.1ABetterSwitch19814.2Guards19914.3VariablesinPatterns19914.4TypePatterns20014.5MatchingArrays,Lists,andTuples20114.6Extractors20214.7PatternsinVariableDeclarations20314.8PatternsinforExpressions20414.9CaseClasses205xiiContents14.10ThecopyMethodandNamedParameters20514.11InfixNotationincaseClauses20614.12MatchingNestedStructures20714.13AreCaseClassesEvil?20814.14SealedClasses20914.15SimulatingEnumerations20914.16TheOptionType21014.17PartialFunctionsL2211Exercises21215ANNOTATIONSA221515.1WhatAreAnnotations?21615.2WhatCanBeAnnotated?21615.3AnnotationArguments21715.4AnnotationImplementations21815.5AnnotationsforJavaFeatures21915.5.1JavaModifiers21915.5.2MarkerInterfaces22015.5.3CheckedExceptions22015.5.4VariableArguments22115.5.5JavaBeans22115.6AnnotationsforOptimizations22215.6.1TailRecursion22215.6.2JumpTableGenerationandInlining22315.6.3ElidingMethods22415.6.4SpecializationforPrimitiveTypes22515.7AnnotationsforErrorsandWarnings226Exercises22716XMLPROCESSINGA222916.1XMLLiterals23016.2XMLNodes23016.3ElementAttributes23216.4EmbeddedExpressions233xiiiContents16.5ExpressionsinAttributes23416.6Unco妹妹onNodeTypes23516.7XPath-likeExpressions23516.8PatternMatching23716.9ModifyingElementsandAttributes23816.10TransformingXML23916.11LoadingandSaving23916.12Namespaces242Exercises24317FUTURESA224717.1RunningTasksintheFuture24817.2WaitingforResults25017.3TheTryClass25117.4Callbacks25117.5ComposingFutureTasks25217.6OtherFutureTransformations25517.7MethodsintheFutureObject25617.8Promises25817.9ExecutionContexts260Exercises26018TYPEPARAMETERSL226518.1GenericClasses26618.2GenericFunctions26618.3BoundsforTypeVariables26618.4ViewBounds26818.5ContextBounds26818.6TheClassTagContextBound26918.7MultipleBounds26918.8TypeConstraintsL326918.9Variance27118.10Co-andContravariantPositions272xivContents18.11ObjectsCan’tBeGeneric27418.12Wildcards275Exercises27519ADVANCEDTYPESL227919.1SingletonTypes28019.2TypeProjections28119.3Paths28219.4TypeAliases28319.5StructuralTypes28319.6CompoundTypes28419.7InfixTypes28519.8ExistentialTypes28619.9TheScalaTypeSystem28719.10SelfTypes28819.11DependencyInjection28919.12AbstractTypesL329119.13FamilyPolymorphismL329319.14Higher-KindedTypesL3296Exercises29920PARSINGA330320.1Gra妹妹ars30420.2CombiningParserOperations30520.3TransformingParserResults30720.4DiscardingTokens30820.5GeneratingParseTrees30920.6AvoidingLeftRecursion31020.7MoreCombinators31120.8AvoidingBacktracking31420.9PackratParsers31420.10WhatExactlyAreParsers?31520.11RegexParsers316Contentsxv20.12Token-BasedParsers31720.13ErrorHandling319Exercises32021IMPLICITSL332321.1ImplicitConversions32421.2UsingImplicitsforEnrichingExistingClasses32421.3ImportingImplicits32521.4RulesforImplicitConversions32621.5ImplicitParameters32821.6ImplicitConversionswithImplicitParameters32921.7ContextBounds32921.8TypeClasses33121.9Evidence33321.10The@implicitNotFoundAnnotation33421.11CanBuildFromDemystified334Exercises336Index338

行政区划数据库（34个省份396个都市3700个区县）区划ID-父亲ID-全称-简称-级别-邮编-区号-拼音-简拼-经纬度-省市区聚合舒适揭示经纬度是省市区对于应的中间经纬度，即国测局坐标（GCJ02坐标：google舆图、soso舆图、aliyun舆图、mapabc舆图以及amap舆图所用坐标）不是WGS84（gps）国内坐标;--mysql导入数据库--建树表最新行政区划数据库--字段区划ID-父ID-全称-全称聚合-简称-简称聚合-级别-区号-邮编-拼音-简拼-首字母-经度-纬度-备注CREATETABLE`areas``.`areas`(`ID`VARCHAR(45)NULL,`ParentId`VARCHAR(45)NULL,`Name`VARCHAR(45)NULL,`MergerName`VARCHAR(200)NULL,`ShortName`VARCHAR(45)NULL,`MergerShortName`VARCHAR(200)NULL,`LevelType`VARCHAR(45)NULL,`CityCode`VARCHAR(45)NULL,`ZipCode`VARCHAR(45)NULL,`Pinyin`VARCHAR(45)NULL,`Jianpin`VARCHAR(45)NULL,`FirstChar`VARCHAR(45)NULL,`lng`VARCHAR(45)NULL,`Lat`VARCHAR(45)NULL,`Remark`VARCHAR(45)NULL);--导入数据库LOADDATALOCALINFILE'G:\areas.txt'INTOTABLEareasFIELDSTERMINATEDBY'\t'LINESTERMINATEDBY'\n'(ID,ParentId,Name,MergerName,ShortName,MergerShortName,LevelType,CityCode,ZipCode,Pinyin,Jianpin,FirstChar,lng,Lat,Remark);--xls全选复制到txt--默许txt为中文编码导入时请转为utf-8编码免患上乱码--附MSSQL导入方式:--建树最新行政区划数据库旗舰版--字段区划ID-父ID-全称-全称聚合-简称-简称聚合-级别-区号-邮编-拼音-简拼-首字母-经度-纬度-备注CREATETABLE[dbo].[areas]([ID][NVARCHAR](50)NULL,[ParentId][NVARCHAR](50)NULL,[Name][NVARCHAR](50)NULL,[MergerName][NVARCHAR](200)NULL,[ShortName][NVARCHAR](50)NULL,[MergerShortName][NVARCHAR](200)NULL,[LevelType][NVARCHAR](50)NULL,[CityCode][NVARCHAR](50)NULL,[ZipCode][NVARCHAR](50)NULL,[Pinyin][NVARCHAR](50)NULL,[Jianpin][NVARCHAR](50)NULL,[FirstChar][NVARCHAR](50)NULL,[Lng][NVARCHAR](50)NULL,[Lat][NVARCHAR](50)NULL,[Remark][NVARCHAR](50)NULL)--导入数据库BULKINSERTdbo.[areas]FROM'G:\IP数据库\areas.sqlWITH(FIELDTERMINATOR='\t',ROWTERMINATOR='\n')--盘问SELECT*FROMdbo.areas

AnexplosionofWeb-basedlanguagetechniques,mergingofdistinctfields,availabilityofphone-baseddialoguesystems,andmuchmoremakethisanexcitingtimeinspeechandlanguageprocessing.Thefirstofitskindtothoroughlycoverlanguagetechnology–atalllevelsandwithallmoderntechnologies–thisbooktakesanempiricalapproachtothesubject,basedonapplyingstatisticalandothermachine-learningalgorithmstolargecorporations.Buildseachchapteraroundoneormoreworkedexamplesdemonstratingthemainideaofthechapter,usingtheexamplestoillustratetherelativestrengthsandweaknessesofvariousapproaches.Addscoverageofstatisticalsequencelabeling,informationextraction,questionansweringandsu妹妹arization,advancedtopicsinspeechrecognition,speechsynthesis.

sqoop从phoenix抽取数据到hdfssqoopimport\--driverorg.apache.phoenix.jdbc.PhoenixDriver\--connectjdbc:phoenix:192.168.111.45:2181\--query"selectcs_mine_code,cs_data_time,ss_station_code,ss_transducer_code,ss_transducer_state,ss_analog_valuefromAQSS_mWHEREsubstr(cs_data_time,0,10)='2020-07-24'and\$CONDITIONS"\--target-dir/origin_data/phoenix/dwd/aqss_m/2020-07-24/\--delete-target-dir\--num-mappers1\--direct\--fields-terminated-by','

CDEGS软件是由加拿大SES公司历经十余年开拓而成的，CDEGS是电流漫衍（CurrentDistribution），电磁场（ElectromagneticFields）、接地（Grounding）以及泥土结构阐发（SoilstructureAnalysis）英文首字母的缩写，他是处置电力体系接地下场、电磁场下场、电磁干扰下场的等工程学学术上的渺小货物软件，还能够阐发并处置阴极保护下场。
如下分享些对于CDEGS的学习资料，软件信息请若有需要，可联系qq：2496292303，驱散巨匠加退学习交流群：993997402。

Finitefields(ENCYCLOPEDIAOFMATHEMATICSANDITSAPPLICATIONS,vol.20),RudolfLidl,2003.djvu

Publisher:PrenticeHallPTRPubDate:September15,2003ISBN:0-13-066946-6Pages:608Section2.7.TheSpectrumofanIdealSquareWaveSection2.8.FromtheFrequencyDomaintotheTimeDomainSection2.9.EffectofBandwidthonRiseTimeSection2.10.BandwidthandRiseTimeSection2.11.WhatDoes"Significant"Mean?Section2.12.BandwidthofRealSignalsSection2.13.BandwidthandClockFrequencySection2.14.BandwidthofaMeasurementSection2.15.BandwidthofaModelSection2.16.BandwidthofanInterconnectSection2.17.BottomLineChapter3.ImpedanceandElectricalModelsSection3.1.DescribingSignal-IntegritySolutionsinTermsofImpedanceSection3.2.WhatIsImpedance?Section3.3.Realvs.IdealCircuitElementsSection3.4.ImpedanceofanIdealResistorintheTimeDomainSection3.5.ImpedanceofanIdealCapacitorintheTimeDomainSection3.6.ImpedanceofanIdealInductorintheTimeDomainSection3.7.ImpedanceintheFrequencyDomainSection3.8.EquivalentElectricalCircuitModelsSection3.9.CircuitTheoryandSPICESection3.10.IntroductiontoModelingSection3.11.TheBottomLineChapter4.ThePhysicalBasisofResistanceSection4.1.TranslatingPhysicalDesignintoElectricalPerformanceSection4.2.TheOnlyGoodApproximationfortheResistanceofInterconnectsSection4.3.BulkResistivitySection4.4.ResistanceperLengthSection4.5.SheetResistanceSection4.6.TheBottomLineChapter5.ThePhysicalBasisofCapacitanceSection5.1.CurrentFlowinCapacitorsSection5.2.TheCapacitanceofaSphereSection5.3.ParallelPlateApproximationSection5.4.DielectricConstantSection5.5.PowerandGroundPlanesandDecouplingCapacitanceSection5.6.CapacitanceperLengthSection5.7.2DFieldSolversSection5.8.EffectiveDielectricConstantSection5.9.TheBottomLineChapter6.ThePhysicalBasisofInductanceSection6.1.WhatIsInductance?Section6.2.InductancePrinciple#1:ThereAreCircularMagneti

OpenSceneGraph3CookbookBookDescriptionOpenSceneGraphisanopensource3Dgraphicsapplicationprogra妹妹inginterface,usedbyapplicationdevelopersinfieldssuchasvisualsimulation,computergames,virtualreality,scientificvisualization,andmodeling.FamiliarwithitsconceptsandAPIs,andneedtoimproveyourknowledge?Thisbookisheretohelp.Withexactly100recipes,itwillenrichyourexperienceandtakeyoutothenextlevel.OpenSceneGraph3Cookbookwillescortyouintotheworldofreal-time3DdevelopmentwithOpenSceneGraph,theworldfamous3Dgraphicsengine.Thebookassumesthatyouarealreadyfamiliarwithsomebasicconcepts,andprovides100vividrecipestodemonstratehowtoutilizetheAPIflexiblyandhowtoimplementsomepracticalaspects.Thebookisdividedinto10chapters,eachofwhichfocusesononetopic.Readersmaystartfromanytopictheyareinterestedin.ThebookincludescustomizingOpenSceneGraph,designingscenegraph,geometry,scenenavigation,animations,effectsusingfixedpipelineandshaders,managingmassdata,andmiscellaneousdiscussions.Everyrecipewillprovetobeusefulinapracticalwayorinresearch.OpenSceneGraph3Cookbookgivesyouawideinsightabout3Dprogra妹妹ingusingOpenSceneGraph,withasetofmeaningfulandinterestingexamples.

一共102个模板文件,囊括了大多数操作系统文件的存储结构模板,对学习文件结构和数据恢复都有较大协助AFP_Structured_Fields.tplBMP.tplBootSectorFAT.tplBootSectorFAT32.tplBootSectorNTFS.tplCDFSDirectoryEntryAscii.tplCDFSDirectoryEntryUnicode.tplCDFSPathTablesAscii.tplCDFSPathTablesUnicode.tplCDFSVolumeDescriptor.tplCDFS

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。