英文原版，离散数学及其应用，第八版，作者KennethH.Rosen十分清晰

Overthepastfewdecades,mathematicalmodelshavebecomeanincreasinglyimportanttoolforEarthscientiststounderstandandmakepredictionsabouthowourplanetfunctionsandevolvesthroughtimeandspace.Thesemodelsoftenconsistofpartialdifferentialequations(PDEs)thatarediscretizedwithanumericalmethodandsolvedonacomputer.Themostcommonlyuseddiscretizationmethodsarethefinitedifferencemethod(FDM),thefinitevolumemethod,thefiniteelementmethod(FEM),thediscreteelementmethod,theboundaryelementmethod,andvariousspectralmethods.

ThisdistributioncontainsroutinesformanipulatingfilesformattedaccordingtotheJointPhotographicExpertsGroup(JPEG)standard.Matlab'sbuilt-inIMREADandIMWRITEfunctionsprovidebasicconversionbetweenJPEGfilesandimagearrays.TheroutinesinthispackageprovideadditionalfunctionalityfordirectlyaccessingthecontentsofJPEGfilesfromMatlab,includingtheDiscreteCosineTransform(DCT)coefficients,quantizationtables,Huffmancodingtables,colorspaceinformation,andcommentmarkers.ItisassumedthattheuserofthissoftwarehasagoodunderstandingofboththeJPEGcompressionstandardandMatlabdatastructures.ThissoftwareisbasedinpartontheworkoftheIndependentJPEGGroup(IJG),asitmakesuseofIJG'sfreeJPEGcodelibrary.IftheMEXfilebinariesprovidedinthisdistributionarenottheonesyouneedforyoursystem,youwillneedtodownloadIJG'scodelibraryandinstallitonyoursystembeforecompilingthesourcecode.See"Installing"formoredetails.----PhilSallee9/2003

1.OFDM的基本原理2.SynthesisofBand-LimitedOrthogonalSignalsforMultichannelDataTransmission3.Peled_Ruiz_Frequencydomaindatatransmissionusingreducedcomputationalcomplexityalgorithms4.Weinstein_Ebert_DataTransmissionbyFrequency-DivisionMultiplexingUsingtheDiscreteFourierTransform

TheXilinx®LogiCORE™IPFastFourierTransform(FFT)coreimplementstheCooley-TukeyFFTalgorithm,acomputationallyefficientmethodforcalculatingtheDiscreteFourierTransform(DFT).

DescriptionModelingandSimulationinPythonModelingandSimulationinPythonisanintroductiontophysicalmodelingusingacomputationalapproach.Itisorganizedinthreeparts:Thefirstpartpresentsdiscretemodels,includingabikesharesystemandworldpopulationgrowth.Thesecondpartintroducesfirst-ordersystems,includingmodelsofinfectiousdisease,thermalsystems,andchemicalkinetics.Thethirdpartisaboutsecond-ordersystems,includingmechanicalsystemslikeprojectiles,celestialmechanics,androtatingrigidbodies.Takingacomputationalapproachmakesitpossibletoworkwithmorerealisticmodelsthanwhatyoutypicallyseeinafirst-yearphysicsclass,withtheoptiontoincludefeatureslikefrictionanddrag.Pythonisanidealprogra妹妹inglanguageforthismaterial.Itisagoodfirstlanguageforpeoplewhohavenotprogra妹妹edbefore,anditprovideshigh-leveldatastructuresthatarewell-suitedtoexpresssolutionstotheproblemsweareinterestedin.

Stabilityandstaticoutputfeedbackstabilizationforaclassofnonlineardiscrete-timesingularswitchedsystems

CurveLabisacollectionofMatlabandC++programstocomputefastdiscretecurvelettransformintwoandthreedimensions.The2dsoftwareincludestheimplementationsoftwoalgorithms:thetransformusingwrappingandtheoneusingunequally-spacedfastfouriertransform(USFFT).The3dsoftwareincludesthein-core,out-coreandMPI-basedparallelimplementationofthe3dalgorithm.Toinstallthepackage,seecurvelab.pdf.Contacts:curvelab@curvelet.orgwww.curvelet.org

1.discreteill-posedproblemsandtheirregularization2.regularizationtoolstutorial3.regularizationtoolsreference

IfyouknowhowtoprogramwithPythonandalsoknowalittleaboutprobability,you’rereadytotackleBayesianstatistics.Withthisbook,you'lllearnhowtosolvestatisticalproblemswithPythoncodeinsteadofmathematicalnotation,andusediscreteprobabilitydistributionsinsteadofcontinuousmathematics.Onceyougetthemathoutoftheway,theBayesianfundamentalswillbecomeclearer,andyou’llbegintoapplythesetechniquestoreal-worldproblems.Bayesianstatisticalmethodsarebecomingmoreco妹妹onandmoreimportant,butnotmanyresourcesareavailabletohelpbeginners.BasedonundergraduateclassestaughtbyauthorAllenDowney,thisbook’scomputationalapproachhelpsyougetasolidstart.

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。