RGraphics,ThirdEdition(Chapman&Hall/CRCTheRSeries)By作者:PaulMurrellISBN-10书号:1498789056ISBN-13书号:9781498789059Edition版本:3出书日期:2018-11-29pages页数:(441)$99.95ThisthirdeditionofPaulMurrell’sclassicbookonusingRforgraphicsrepresentsamajorupdate,withacompleteoverhaulinfocusandscope.ItfocusesprimarilyonthetwocoregraphicspackagesinR–graphicsandgrid–andhasanewsectiononintegratinggraphics.Thissectionincludesthreenewchapters:importingexternalimagesintoR;integratingthegraphicsandgridsystems;andadvancedSVGgraphics.Theemphasisinthisthirdeditionisonhavingtheabilitytoproducedetailedandcustomisedgraphicsinawidevarietyofformats,onbeingabletoshareandreusethosegraphics,andonbeingabletointegrategraphicsfrommultiplesystems.ThisbookisaimedatalllevelsofRusers.ForpeoplewhoarenewtoR,thisbookprovidesanoverviewofthegraphicsfacilities,whichisusefulforunderstandingwhattoexpectfromR’sgraphicsfunctionsandhowtomodifyoraddtotheoutputtheyproduce.Forintermediate-levelRusers,thisbookprovidesalloftheinformationnecessarytoperformsophisticatedcustomizationsofplotsproducedinR.ForadvancedRusers,thisbookcontainsvitalinformationforproducingcoherent,reusable,andextensiblegraphicsfunctions.

ContentsListofcontributorsxviForewordxviiAcknowledgementsxxElectromagnetismandantennas–ahistoricalperspective11Fundamentalsofelectromagnetism71.1Maxwell’sequations71.1.1Maxwell’sequationsinanarbitrarymedium71.1.2Linearmedia101.1.3Conductingmedia121.1.4Reciprocitytheorem141.2Powerandenergy151.2.1Powervolumedensities151.2.2Energyvolumedensities161.2.3Poyntingvectorandpower171.3Planewavesinlinearmedia181.3.1Planewavesinanisotropiclinearmedium181.3.2Skineffect24Furtherreading26Exercises272Radiation312.1Planewavespectrum322.1.1Spectraldomain322.1.2Electromagneticfieldinasemi-infinitespacewithnosources342.1.3Thefarfield392.2Kirchhoff’sformulation442.2.1Green’sidentityandGreen’sfunctions442.2.2Kirchhoff’sintegralformulation462.2.3PlanewavespectrumandKirchhoff’sformulation48Furtherreading49Exercises503Antennasintransmission533.1Farfieldradiation543.1.1Vectorcharacteristicoftheradiationfromtheantenna543.1.2Translationtheorem553.1.3Application:radiationproducedbyanarbitrarycurrent553.1.4Radiatedpower583.2Fieldradiatedfromanantenna593.2.1Elementarydipoles593.2.2Plane-apertureradiation623.3Directivity,gain,radiationpattern663.3.1Radiatedpower663.3.2Directivity673.3.3Gain683.3.4Radiationpattern703.3.5Inputimpedance72Furtherreading73Exercises744Receivingantennas794.1Antennareciprocitytheorem794.1.1Reciprocitytheoremappliedtoasource-freeclosedsurface794.1.2Relationbetweenthefieldontransmitandthefieldonreceive834.2Antennaeffectivereceivingarea844.2.1Definition844.2.2Relationshipbetweengainandeffectivereceivingarea854.3Energytransmissionbetweentwoantennas864.3.1TheFriistransmissionformula864.3.2Radarequation874.3.3AntennaRadarCrossSection(RCS)894.4Antennabehaviourinthepresenceof

jmail免费版本运行的时候会出现thisfunctionisnotincludedinthisversionofjmail.这个。
处理方案是换一个jmail组件，使用4.5版本的组件，JMail需要注册，大家可以根据dll的路径改.bat文件，里面还有不同版本的jmail组件，4.0--4.5都有

TheobjectiveofthisdocumentistopresenttheMODBUSmessagingserviceoverTCP/IP,inordertoprovidereferenceinformationthathelpssoftwaredeveloperstoimplementthisservice.TheencodingoftheMODBUSfunctioncodesisnotdescribedinthisdocument,forthisinformationpleasereadtheMODBUSApplicationProtocolSpecification[1].ThisdocumentgivesaccurateandcomprehensivedescriptionofaMODBUSmessagingserviceimplementation.ItspurposeistofacilitatetheinteroperabilitybetweenthedevicesusingtheMODBUSmessagingservice.Thisdocumentcomprisesmainlythreeparts:•AnoverviewoftheMODBUSoverTCP/IPprotocol•AfunctionaldescriptionofaMODBUSclient,serverandgatewayimplementation.•AnimplementationguidelinethatproposestheobjectmodelofanMODBUSimplementationexample.

ReadMeReleaseVersionbeta_1.0index.pyimageMatlab.pyThisismoreorlessawrapperforMatplotlibimagingfunctionssuchthattheirbehaviorisequivalent,intermsofcolormap,aspectandsoforth,totheexpectedbehaviorofMatlab'sfunctions.sepVocal.pyThisscriptcanbeusedtoexecutethedesiredseparation.Seebelowforanexampleofuseofthisfile.SIMM.pyThisscriptimplementstheactualalgorithmforparameterestimation.ItismainlyusedbysepVocal.py.tracking.pyTheViterbidecodingalgorithmisimplementedinthisscript.Requirements:ThesescriptshavebeentestedwithPython2.7,Thepackagesthatarerequiredtorunthescriptsarepydub,ffmepg,Numpy,Spicy,Matplotlib.Onecanrespectivelyfindthelatestversionsatthefollowingaddresses:http://pydub.com/https://ffmpeg.orghttp://numpy.org/http://scipy.org/http://matplotlib.sourceforge.net/Notes:Preferrecentversionsoftheabovepackages,inordertoavoidcompatibilityissues,notablyforMatplotlib.Notethatthislatterpackageisnotnecessaryfortheprogramtorun,althoughyoumightwanttowatchabitwhatishappening!Spicyshouldbeversion0.8+,sinceweuseitsio.wavefilemoduletoreadthewavefiles.Weonceusedtheaudiolabmodule,butitwouldseemthatitisabitmorecomplicatedtoinstall(withthebenefitthatmanymorefileformatsareallowed).Usage:Theeasywaytousethesescriptsistoruntheexecpackageofourreleaseversion:http://www.github.com/beata_1.0formoredevelop:youcanruntheindex.pyonpycharmdirectly.note:theoutputfileswillcreateunderyousourcewavfile.ContactMeEmail:xlzhang14@fudan.edu.cn

（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。

Thebestplacetostartiswiththeuser-friendlyKerassequentialAPI.Buildmodelsbypluggingtogetherbuildingblocks.Afterthesetutorials,readtheKerasguide.TheKerasfunctionalandsubclassingAPIsprovideadefine-by-runinterfaceforcustomizationandadvancedresearch.Buildyourmodel,thenwritetheforwardandbackwardpass.Createcustomlayers,activations,andtrainingloops.

航空发动机非线性模型仿真程序，基于simulink使用sfunction开发的，可以自在组合压气机、燃烧室、涡轮，建立航空发动机非线性模型，计算航空发动机实时参数，包括各个界面参数、发动机推力和耗油率等。

TheModernC++Challenge:Becomeanexpertprogra妹妹erbysolvingreal-worldproblemsTestyourC++progra妹妹ingskillsbysolvingreal-worldprogra妹妹ingproblemscoveredinthebookC++isoneofthemostwidely-usedprogra妹妹inglanguagesandhasapplicationsinavarietyoffields,suchasgaming,GUIprogra妹妹ing,andoperatingsystems,tonameafew.WhatYouWillLearnSerializeanddeserializeJSONandXMLdataPerformencryptionandsigningtofacilitatesecureco妹妹unicationbetweenpartiesEmbedanduseSQLitedatabasesinyourapplicationsUsethreadsandasynchronousfunctionstoimplementgenericpurposeparallelalgorithmsCompressanddecompressfilesto/fromaZIParchiveImplementdatastructuressuchascircularbufferandpriorityqueueImplementgeneralpurposealgorithmsaswellasalgorithmsthatsolvespecificproblemsCreateclient-serverapplicationsthatco妹妹unicateoverTCP/IPConsumeHTTPRESTservicesUsedesignpatternstosolvereal-worldproblems

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。