Writtenbyanexpertinthegameindustry,ChristerEricson'snewbookisacomprehensiveguidetothecomponentsofefficientreal-timecollisiondetectionsystems.Thebookprovidesthetoolsandknow-howneededtoimplementindustrial-strengthcollisiondetectionforthehighlydetaileddynamicenvironmentsofapplicationssuchas3Dgames,virtualrealityapplications,andphysicalsimulators.Ofthemanytopicscovered,akeyfocusisonspatialandobjectpartitioningthroughawidevarietyofgrids,trees,andsortingmethods.Theauthoralsopresentsalargecollectionofintersectionanddistancetestsforbothsimpleandcomplexgeometricshapes.SectionsonvectorandmatrixalgebraprovidethebackgroundforadvancedtopicssuchasVoronoiregions,Minkowskisums,andlinearandquadraticprogramming.Ofutmostimportancetoprogrammersbutrarelydiscussedinthismuchdetailinotherbooksarethechapterscoveringnumericalandgeometricrobustness,bothessentialtopicsforcollisiondetectionsystems.Alsouniquearethechaptersdiscussinghowgraphicshardwarecanassistincollisiondetectioncomputationsandonadvancedoptimizationformoderncomputerarchitectures.Allinall,thiscomprehensivebookwillbecometheindustrystandardforyearstocome.

在WinForm开发中，在处理大量数据时不免会有耗时较长的操作，如果将这些操作放在主线程里，软件界面会有较长时间的“无响应”，降低了用户体验，常用的解决方式是加上进度条。
实现思路--------------------------------------------------------------------------------使用BackgroundWorker（已经封装好的线程工具）控件在后台线程执行费时的操作，在主线程中打开一个进度条窗体显示进度。
实现步骤--------------------------------------------------------------------------------第0步：创建一个具有进度条的窗体，以显示进度新建窗体ProcessForm，设置属性FormBorderStyle为None，添加一个ProcessBar控件，如下图所示：进度条窗体PrcessBar的Style属性设置为MarQuee。
在ProcessForm添加如下公共属性：?1234567891011121314151617181920212223//////设置提示信息///publicstringMessageInfo{set{this.labelInfor.Text=value;}}//////设置进度条显示值///publicintProcessValue{set{this.progressBar1.Value=value;}}//////设置进度条样式///publicProgressBarStyleProcessStyle{set{this.progressBar1.Style=value;}}第1步：创建进度条管理类ProcessOperator在该类中添加如下字段：?12privateBackgroundWorker_backgroundWorker;//后台线程privateProcessForm_processForm;//进度条窗体添加如下公共属性、方法和事件：?123456789101112131415161718192021222324252627282930#region公共方法、属性、事件//////后台执行的操作///publicActionBackgroundWork{get;set;}//////设置进度条显示的提示信息///publicstringMessageInfo{set{_processForm.MessageInfo=value;}}//////后台任务执行完毕后事件///publiceventEventHandlerBackgroundWorkerCompleted;//////开始执行///publicvoidStart(){_backgroundWorker.RunWorkerAsync();_processForm.ShowDialog();}#endregion其中，属性BackgroundWork可以指向一个无参数的方法，这里（客户端代码）用来指向要在

GlidePalette下载在您的模块中compile'com.github.florent37:glidepalette:2.1.2'compile'com.github.bumptech.glide:glide:4.6.1'样品Glide.with(this).load(url).listener(GlidePalette.with(url).use(GlidePalette.Profile.MUTED_DARK).intoBackground(textView).intoTextColor(textView).use(GlidePalette.Profile.VIBRANT).intoBackground(titleView,GlidePalette.Swatch.RGB)

+(UIView*_Nullable)az_gradientViewWithColors:(NSArray*_Nullable)colorslocations:(NSArray*_Nullable)locationsstartPoint:(CGPoint)startPointendPoint:(CGPoint)endPoint;-(void)az_setGradientBackgroundWithColors:(NSArray*_Nullable)colorslocations:(NSArray＜NSN

<html<head＞<metahttp-equiv="Content-Type"content="text/html;charset=utf-8"/><title>王莫</title><styletype="text/css">body{background-color:#000;}</style></head><body{> 欢迎进入LOL助手</body></html>

模糊背景（blurredbackgrounds）长时间以来都是作为一个基本的照片效果，但在最近模糊背景已做为使设计元素脱颖而出的非凡工具，而受到很多设计师的青睐。
这种做法相当容易，悄无声息又自然的给予内容适当突出，图标和图形就能脱颖而出。
这样做能够二鸟一石。
首先，你可以为你的项目增加些不一样的效果；
其次，适当的增加这种设计效果对小尺寸的手机屏幕很有必要，能有效地提高可读性体验。
模糊的背景还提供了其他潜在的好处。
例如，你可以轻易减少你的调色板，而只侧重于一个主色，尤其是在使用白色为基调的设计，在模糊背景下看起来绝对精彩、干净。
至于图形，你可以使用面或线形的图形，都能很好地与这样的图像进行呼应。
字

Thisbookwaswrittenusingatutorialapproachandisintendedtoappealtoabroadaudience.Thebookcoversthefundamentalsofshort-rangewirelessnetworkingusingZigBee™andIEEE802.15.4™standards.TheZigBeeandIEEE802.15.4standardsarecoveredwiththesamelevelofdetail.Inadditiontotechnicaldetails,thebookcontainshigh-leveloverviewsthatwouldbeinformativeforareaderwhoisonlyinterestedinunderstandingthegeneralconceptofZigBeewirelessnetworking.ThisbookprovidesthebigpictureofZigBeewirelessnetworking,fromtheradiofrequency(RF)andphysicallayerconsiderationsuptotheapplicationlayerdetails.Consideringthemultidisciplinarynatureofthisbook,therequiredbackgroundmaterialsarealsoprovided.

StochasticCalculusforFinanceI:TheBinomialAssetPricingModel(SpringerFinance)(Paperback)byStevenE.Shreve(Author)BookDescriptionStochasticCalculusforFinanceevolvedfromthefirsttenyearsoftheCarnegieMellonProfessionalMaster'sprograminComputationalFinance.Thecontentofthisbookhasbeenusedsuccessfullywithstudentswhosemathematicsbackgroundconsistsofcalculusandcalculus-basedprobability.Thetextgivesbothprecisestatementsofresults,plausibilityarguments,andevensomeproofs,butmoreimportantlyintuitiveexplanationsdevelopedandrefinethroughclassroomexperiencewiththismaterialareprovided.Thebookincludesaself-containedtreatmentoftheprobabilitytheoryneededforstochasticcalculus,includingBrownianmotionanditsproperties.Advancedtopicsincludeforeignexchangemodels,forwardmeasures,andjump-diffusionprocesses.Thisbookisbeingpublishedintwovolumes.Thefirstvolumepresentsthebinomialasset-pricingmodelprimarilyasavehicleforintroducinginthesimplesettingtheconceptsneededforthecontinuous-timetheoryinthesecondvolume.Chaptersummariesanddetailedillustrationsareincluded.Classroomtestedexercisesconcludeeverychapter.Someoftheseextendthetheoryandothersaredrawnfrompracticalproblemsinquantitativefinance.AdvancedundergraduatesandMasterslevelstudentsinmathematicalfinanceandfinancialengineeringwillfindthisbookuseful.StevenE.ShreveisCo-FounderoftheCarnegieMellonMSPrograminComputationalFinanceandwinneroftheCarnegieMellonDohertyPrizeforsustainedcontributionstoeducation.Publisher:Springer;1edition(June28,2005)Language:EnglishISBN-10:0387249680ISBN-13:978-0387249681

DifferentialEquationsandLinearAlgebra(4th)英文无水印原版pdf第4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EditorialDirector,Mathematics:ChristinehoagEditor-in-Chief:DeirdreLynchAcquisitionsEditor:WilliamHoffmaProjectTeamLead:ChristinaleProjectmanager:LaurenMorseEditorialAssistant:JenniferSnyderProgramTeamLead:KarenwernholmProgramManagerDaniellesimbajonCoverandillustrationDesign:StudioMontageProgramDesignLead:BethPaquinProductMarketingManagerClaireKozarProductMarketingCoordiator:BrookesmithFieldMarketingManager:EvanStCyrSeniorAuthorSupport/TechnologySpecialist:JoevetereSeniorProcurementSpecialist:CarolMelvilleInteriorDesign,ProductionManagement,AnswerArt,andCompositioneNergizerAptara,LtdCoverImage:LighttrailsonmodernbuildingbackgroundinShanghai,China-hxdyl/123RFCopyrightO2017,2011,2005PearsonEducation,Inc.oritsaffiliates.AllRightsReserved.PrintedintheUnitedStatesofAmerica.Thispublicationisprotectedbycopyright,andpermissionshouldbeobtainedfromthepublisherpriortoanyprohibitedreproduction,storageinaretrievalsystem,ortransmissioninanyformorbyanymeans,electronic,mechanical,photocopyingrecording,orotherwise.Forinformationregardingpermissions,requestformsandtheappropriatecontactswithinthePearsonEducationGlobalRights&Permissionsdepartmentpleasevisitwww.pearsoned.com/permissions/PEARSONandALWAYSLEARNINGareexclusivetrademarksintheU.s.and/orothercountriesownedbyPearsonEducation,Inc.oritsaffiliatesUnlessotherwiseindicatedherein,anythird-partytrademarksthatmayappearinthisworkarethepropertyoftheirrespectiveowandanyreferencestothird-partytrademarks,logosorothertradedressarefordemonstrativeordescriptivepurposesonly.SuchofsuchmarksoranyrelationshipbetweentheownerandPearsonEducation,Inc.oritsaffiliates,authors,licenseesordistributortreferencesarenotintendedtoimplyanysponsorship,endorsement,authorization,orpromotionofPearsonsproductsbytheownersLibraryofCongressCataloging-in-PublicationDataGoode.StephenwDifferentialequationsandlinearalgebra/StephenW.GoodeandScottA.AnninCaliforniastateUniversity,Fullerton.-4theditionpagescmIncludesindexISBN978-0-321-96467-0—ISBN0-32196467-51.Differentialequations.2.Algebras,Linear.I.Annin,Scott.II.TitleQA371.G6442015515’.35-dc23201400601512345678910V031-1918171615PEARSONISBN10:0-321-96467-5www.pearsonhighered.comISBN13:978-0-321-96467-0ContentsPrefacevii1First-OrderDifferentialEquations1.1DifferentialEquationsEverywhere11.2BasicIdeasandTerminology131.3TheGeometryofFirst-OrderDifferentialEquations231.4SeparableDifferentialEquations341.5SomeSimplePopulationModels451.6First-OrderLinearDifferentialEquations531.7ModelingProblemsUsingFirst-OrderLinearDifferentialEquations61.8Changeofvariables711.9ExactDifferentialEquations821.10Numericalsolutiontofirst-OrderDifferentialEquations931.11SomeHigher-OrderDifferentialEquations1011.12ChapterReview1062MatricesandSystemsofLinearEquations1142.1Matrices:Definitionsandnotation1152.2MatrixAlgebra1222.3TerminologyforSystemsofLinearEquations13824R。
w-EchelonMatricesandElementaryR。
wOperations1462.5Gaussianelimination1562.6TheInverseofasquarematrix1682.7ElementaryMatricesandtheLUFactorization1792.8TheInvertiblematrixtheoremi1882.9ChapterReview1903Determinants1963.1TheDefinitionofthedeterminant1963.2PropertiesofDeterminants2093.3CofactorExpansions2223.4SummaryofDeterminants2353.5ChapterReview242iyContents4VectorSpaces2464.1Vectorsinrn2484.2DefinitionofaVectorSpace2524.3Subspaces2634.4SpanningSets2744.5LinearDependenceandLinearIndependence2844.6Basesanddimension2984.7Changeofbasis3114.8RowSpaceandColumnSpace3194.9TheRank-NullityTheorem3254.10InvertibleMatrixTheoremll3314.11ChapterReview3325InnerProductSpaces3395.1DefinitionofanInnerproductspace3405.2OrthogonalSetsofvectorsandorthogonalProjections3525.3Thegram-Schmidtprocess3625.4LeastSquaresApproximation3665.5ChapterReview3766LinearTransformations3796.1Definitionofalineartransformation3806.2Transformationsofr23916.3TheKernelandrangeofalineartransformation3976.4AdditionalPropertiesofLinearTransformations4076.5Thematrixofalineartransformation4196.6Chaiterreview4287EigenvaluesandEigenvectors4337.1TheEigenvalue/EigenvectorProblem4347.2GeneralResultsforEigenvaluesandEigenvectors4467.3Diagonalization4547.4AnIntroductiontotheMatrixExponentialFunction4627.5OrthogonalDiagonalizationandQuadraticforms4667.6Jordancanonicalforms4757.7Chapterreview4888LinearDifferentialEquationsofOrdern4938.1GeneralTheoryforLinearDifferentialEquations4958.2ConstantCoefficientHomogeneousLinearDifferentialEquations5058.3ThemethodofundeterminedcoefficientsAnnihilators5158.4Complex-ValuedTrialSolutions5268.5OscillationsofaMechanicalSystem529Contentsv8.6RLCCircuits5428.7TheVariationofparametersmethod5478.8ADifferentialEquationwithNonconstantCoefficients5578.9Reductionoforder5688.10ChapterReview5739SystemsofDifferentialEquations5809.1First-OrderLinearSystems5829.2VectorFormulation5889.3GeneralResultsforfirst-OrderLinearDifferentialystems5939.4VectorDifferentialEquations:NondefectiveCoefficientMatrix5999.5VectorDifferentialEquations:DefectiveCoefficientMatrix6089.6Variation-of-ParametersforLinearSystems6209.7SomeApplicationsofLinearSystemsofDifferentialEquations6259.8MatrixExponentialFunctionandSystemsofDifferentialEquations6359.9ThePhasePlaneforLinearAutonomousSystems6439.10NonlinearSystems6559.11ChapterReview66310TheLaplaceTransformandSomeElementaryApplications67010.1DefinitionoftheLaplaceTransform67010.2TheExistenceofthelaplacetransformandtheInversetransform67610.3PeriodicFunctionsandtheLaplacetransform68210.4ThetransformofderivativesandsolutionofInitial-Valueproblems68510.5TheFirstShiftingTheorem69010.6TheUnitStepFunction69510.7TheSecondShiftingTheorem69910.8ImpulsiveDrivingTerms:TheDiracDeltaFunction70610.9TheConvolutionIntegral71110.10ChapterReview71711SeriesSolutionstoLinearDifferentiaEquations72211.1AReviewofpowerseries72311.2SeriesSolutionsaboutanOrdinaryPoint73111.3TheLegendreEquation74111.4SeriesSolutionsaboutaRegularSingularPoint75011.5Frobeniustheory75911.6Bessel'sEquationofOrderp77311.7Chapterreview785ViContentsAReviewofComplexNumbers791BReviewofPartialFractions797CReviewofIntegrationTechniques804DLinearlyIndependentSolutionstox2y+xp(x)y+g(x)y=0811Answerstoodd-NumberedExercises814Index849S.W.GoodededicatesthisbooktomeganandtobiS.A.annindedicatesthisbooktoarthurandJuliannthebestparentsanyonecouldaskforPretraceLikethefirstthreeeditionsofDifferentialEquationsandLinearalgebra,thisfourtheditionisintendedforasophomorelevelcoursethatcoversmaterialinbothdifferentialequationsandlinearalgebra.Inwritingthistextwehaveendeavoredtodevelopthestudentsappreciationforthepowerofthegeneralvectorspaceframeworkinformulatingandsolvinglinearproblems.Thematerialisaccessibletoscienceandengineeringstu-dentswhohavecompletedthreesemestersofcalculusandwhobringthematurityofthatsuccesswiththemtothiscourseThistextiswrittenaswewouldnaturallyteachblendinganabundanceofexamplesandillustrations,butnotattheexpenseofadeliberateandrigoroustreatment.MostresultsareprovenindetailHowever,manyofthesecanbeskippedinfavorofamoreproblem-solvingorientedapproachdependingonthereader'sobjectives.Somereadersmayliketoincorporatesomeformoftechnology(computeralgebrasystem(CAS)orgraphingcalculator)andthereareseveralinstancesinthetextwherethepoweroftechnologyisillustratedusingtheCasMaple.Furthermore,manyexercisesetshaveproblemsthatrequiresomeformoftechnologyfortheirsolutionTheseproblemsaredesignatedwithaoIndevelopingthefourtheditionwehaveoncemorekeptmaximumflexibilityofthematerialinmind.Insodoing,thetextcaneffectivelyaccommodatethedifferentemphasesthatcanbeplacedinacombineddifferentialequationsandlinearalgebracourse,thevaryingbackgroundsofstudentswhoenrollinthistypeofcourse,andthefactthatdifferentinstitutionshavedifferentcreditvaluesforsuchacourse.Thewholetextcanbecoveredinafivecredit-hourcourse.Forcourseswithalowercredit-hourvalue,someselectivitywillhavetobeexercised.Forexample,much(orall)ofChapterImaybeomittedsincemoststudentswillhaveseenmanyofthesedifferentialequationstopicsinanearliercalculuscourse,andtheremainderofthetextdoesnotdependonthetechniquesintroducedinthischapter.Alternatively,whileoneofthemajorgoalsofthetextistointerweavethematerialondifferentialequationswiththetoolsfromlinearalgebrainasymbioticrelationshipasmuchaspossible,thecorematerialonlinearalgebraisgiveninChapters2-7sothatitispossibletousethisbookforacoursethatfocusessolelyonthelinearalgebrapresentedinthesesixchapters.ThematerialondifferentialequationsiscontainedprimarilyinChapters1and8-1l,andreaderswhohavealreadytakenafirstcourseinlinearalgebracanchoosetoproceeddirectlytothesechaptersThereareothermeansofeliminatingsectionstoreducetheamountofmaterialtobecoveredinacourse.Section2.7containsmaterialthatisnotrequiredelsewhereinthetext,Chapter3canbecondensedtoasinglesection(Section3.4)forreadersneedingonlyacursoryoverviewofdeterminants,andSections4.7,5.4,andthelatersectionsofChapters6and7couldallbereservedforasecondcourseinlinearalgebra.InChapter8Sections8.4,8.8,and8.9canbeomitted,and,dependingonthegoalsofthecourse,Sections8.5and8.6couldeitherbede-emphasizedoromittedcompletelySimilarremarksapplytoSections9.7-9.10.AtCaliforniaStateUniversity,Fullertonwehaveafourcredit-hourcourseforsophomoresthatisbasedaroundthematerialinChapters1-9viiiPrefaceMajorChangesintheFourthEditionSeveralsectionsofthetexthavebeenmodifiedtoimprovetheclarityofthepresentationandtoprovidenewexamplesthatreflectinsightfulillustrationswehaveusedinourowncoursesatCaliforniaStateUniversity,Fullerton.OthersignificantchangeswithinthetextarelistedbeleOW1.ThechapteronvectorspacesinthepreviouseditionhasbeensplitintotwochaptersChapters4and5)inthepresentedition,inordertofocusseparateattentiononvectorspacesandinnerproductspaces.Theshorterlengthofthesetwochaptersisalsointendedtomakeeachofthemlessdaunting2.Thechapteroninnerproductspaces(Chapter5)includesanewsectionprovidinganapplicationoflinearalgebratothesubjectofleastsquaresapproximation3.Thechapteronlineartransformationsinthepreviouseditionhasbeensplitintotwochapters(Chapters6and7)inthepresentedition.Chapter6isfocusedonlineartransformations,whileChapter7placesdirectemphasisonthetheoryofeigenvaluesandeigenvectors.Oncemore,readersshouldfindtheshorterchapterscoveringthesetopicsmoreapproachableandfocused4.Mostexercisesetshavebeenenlargedorrearranged.Over3,000problemsarenowcontainedwithinthetext,andmorethan600concept-orientedtrue/falseitemsarealsoincludedinthetext5.Everychapterofthebookincludesoneormoreoptionalprojectsthatallowformorein-depthstudyandapplicationofthetopicsfoundinthetext6.ThebackofthebooknowincludestheanswertoeveryTrue-FalsereviewitemcontainedinthetextAcknowledgmentsWewouldliketoacknowledgethethoughtfulinputfromthefollowingreviewersofthefourthedition:JameyBassofCityCollegeofSanFrancisco,TamarFriedmannofUniversityofrochester,andlinghaiZhangofLehighUniversityAlloftheircommentswereconsideredcarefullyinthepreparationofthetextS.A.Annin:Ioncemorethankmyparents,ArthurandJuliannAnnin,fortheirloveandencouragementinallofmyprofessionalendeavors.Ialsogratefullyacknowledgethemanystudentswhohavetakenthiscoursewithmeovertheyearsand,insodoinghaveenhancedmyloveforthesetopicsanddeeplyenrichedmycareerasaprofessorFirst-OrderDifferentiaEquations1.1DifferentialEquationsEverywhereadifferentialequationisanyequationthatinvolvesoneormorederivativesofanunknownfunction.Forexample(1.1.1dxds(S-1)(1.1.2)aredifferentialequations.Inthedifferentialequation(1.1.1)theunknownfunctionordependentvariableisy,andxistheindependentvariable;inthedifferentialequation(1.1.2)thedependentandindependentvariablesareSandt,respectively.Differentialequationssuchas(1.1.1)and(1.1.)inwhichtheunknownfunctiondependsonlyonasingleindependentvariablearecalledordinarydifferentialequations.Bycontrast,thedifferentialequationLaplace'sequation)0involvespartialderivativesoftheunknownfunctionu(x,y)oftwoindependentvariablesxandy.SuchdifferentialequationsarecalledpartialdifferentialequationsOnewayinwhichdifferentialequationscanbecharacterizedisbytheorderofthehighestderivativethatoccursinthedifferentialequationThisnumberiscalledtheorderofthedifferentialequation.Thus,(l1.1)hasordertwo,whereas(1.1.2)isafirst-orderdifferentialequation1

Writtenbypioneersoftheconcept,thisisthefirstcompleteguidetothephysicalandengineeringprinciplesofMassiveMIMO.Assumingonlyabasicbackgroundincommunicationsandstatisticalsignalprocessing,itwillguidereadersthroughkeytopicssuchaspropagationmodels,channelmodeling,andmulti-cellperformanceanalyses.Theauthors’uniquecapacity-boundapproachwillenablereaderstocarryoutmoreeffectivesystemperformanceanalysisanddevelopadvancedMassiveMIMOtechniquesandalgorithms.Numerouscasestudies,aswellasproblemsetsandsolutionsaccompanyingthebookonline,willhelpreadersputknowledgeintopracticeandacquiretheskillsetneededtodesignandanalyzecomplexwirelesscommunicationsystems.Whetheryouareagraduatestudent,researcher,orindustryprofessionalworkinginthefieldofwirelesscommunications,thiswillbeanindispensableguideforyearstocome.

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。