TwinCATNCPTP是Beckhoff公司的运动控制软件的名称，从字面来看，TwinCAT是“TheWindowsControlandAutomationTechnology”的缩写，即基于Windows操作零碎的自动化控制技术，而NCPTP是“NumericalControlPointToPoint”的缩写，实际上，NC（NumericalControl）是自控领域的一个专业术语，意思是“运动控制”，NCPTP就是点对点的运动控制。

Mapleisacomputerprogramcapableofperformingawidevarietyofmathematicaloperations.Itoriginatedintheearly1980sasacomputeralgebrasystem,buttodaythisdescriptiondoesn’treallydoitjustice.Maplehasfacilitiesforalgebra,calculus,linearalgebra,graphics(twoandthree-dimensionalplots,andanimations),numericalcalculationstoarbitraryprecision,andmanyotherthingsbesides.Itiswidelyusedinuniversitiesacrosstheworld,andisparticularlyusefulfortasksthataretediousanderror-pronewhenperformedbyhumans,suchasmanipulatingcomplicatedseriesexpansionsandsolvinglargesetsofsimultaneousequations.Usedcorrectly,Maplecansavetimeandquicklysolveproblemsthatwouldotherwisebeintractable.Usedincorrectly,itcanleadtofrustration,andthedestructionofexpensiveITequipment.Atthetimeofwriting,thecurrentversionisMaple2016.VersionsbeforeMaple2015werenumberedstartingfrom1;thelastofthesewasMaple18.Newfeaturesintroducedineachversionfro妹妹aple4.0onwardscanbeviewedusingthehelpsystem(seeSection2.2).Forthemostpart,recentchangeshavebeenrelativelyminor,atleastasfarasthematerialinthisbookisconcerned.Consequently,alloftheexamplesworkwithbothMaple2015andMaple2016.Infact,mostwillworkinolderversionsaswell,thoughnaturallythenumberofexceptionsincreasesthefurtherbackonegoes.Twosubstantialnewfeaturesarethedataplotco妹妹and,discussedinSection6.6,andthenewrulesconcerningterminatingcharacters,describedinAppendixB(seealsoSection2.3).BothofthesewereintroducedinMaple2015.

数值分析的经典册本NumericalAnalysis：MathematicsofScientificComputing-Kincaid_Cheney，数值分析（美）金凯德等著英文第三版及相应中文译本。
及两位作者所著的另一本相关册本：Kincaid_Cheney_Numerical_Mathematics_and_Computing__Sixth_Edition

最新版Volume1,CharlesHirsch,CFD典范

JavaNumberCruncherTheJavaProgra妹妹er'sGuidetoNumericalComputing

Wesuggesttailoringoftheillumination’scomplexdegreeofcoherenceforimagingspecifictwo-andthree-pointobjectswithresolutionfarexceedingtheRayleighlimit.Wefirstderiveaformulafortheimageintensityviathepseudo-modedecompositionandthefastFouriertransformvalidforanypartiallycoherentillumination(Schell-like,non-uniformlycorrelated,twisted)andthenshowhowitcanbeusedfornumericalimagemanipulations.Further,forSchell-modelsources,weshowtheimpr

DifferentialEquationsandLinearAlgebra(4thEdition)By作者:C.HenryEdwards–DavidE.Penney–DavidCalvisISBN-10书号:013449718XISBN-13书号:9780134497181Edition版本:4出书日期:2017-01-14pages页数:(768)Pearson纯净原版超清$204.4ForcoursesinDifferentialEquationsandLinearAlgebra.Concepts,methods,andcoretopicscoveringelementarydifferentialequationsandlinearalgebrathroughreal-worldapplicationsInacontemporaryintroductiontodifferentialequationsandlinearalgebra,acclaimedauthorsEdwardsandPenneycombinecoretopicsinelementarydifferentialequationswithconceptsandmethodsofelementarylinearalgebra.Renownedforitsreal-worldapplicationsandblendofalgebraicandgeometricapproaches,DifferentialEquationsandLinearAlgebraintroducesyoutomathematicalmodelingofreal-worldphenomenaandoffersthebestproblemssetsinanydifferentialequationsandlinearalgebratextbook.The4thEditionincludesfreshnewcomputationalandqualitativeflavorevidentthroughoutinfigures,examples,problems,andapplications.Additionally,anExpandedApplicationswebsitecontainingexpandedapplicationsandprogrammingtoolsisnowavailable.ContentsApplicationModulesPreface1First-OrderDifferentialEquations2MathematicalModelsandNumericalMethods3LinearSystemsandMatrices4VectorSpaces5Higher-OrderLinearDifferentialEquations6EigenvaluesandEigenvectors7LinearSystemsofDifferentialEquations8MatrixExponentialMethods9NonlinearSystemsandPhenomena10LaplaceTransformMethods11PowerSeriesMethodsReferencesforFurtherStudyAppendixA:ExistenceandUniquenessofSolutionsAppendixB:TheoryofDeterminantsAnswerstoSelectedProblems

（含源码及报告）本程序分析了自2016年到2021年（外加）每年我国原油加工的产量，并且分析了2020年全国各地区原油加工量等，含饼状图，柱状图，折线图，数据在地图上显示。
运转本程序需要requests、bs4、csv、pandas、matplotlib、pyecharts库的支持，如果缺少某库请自行安装后再运转。
文件含6个excel表，若干个csv文件以及一个名字为render的html文件（需要用浏览器打开），直观的数据处理部分是图片以及html文件，可在地图中显示，数据处理的是excel文件。
不懂可以扫文件中二维码在QQ里面问。

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。