传输线矩阵法Transmission-LineModeling(TLM)Method国外经典教程,国内暂时没有出版,新的数值方式
2023/2/17 12:43:19 2.86MB TLM
1
Roadvehicles—Componenttestmethodsforelectricaldisturbancesfromnarrowbandradiatedelectromagneticenergy—Part2:Absorber-linedshieldedenclosure
2015/8/22 19:46:52 2.49MB EMC
1
NumericalTechniquesinElectromagnetics,SecondEdition电磁学数值技术,fortran言语Astheavailabilityofpowerfulcomputerresourceshasgrownoverthelastthreedecades,theartofcomputationofelectromagnetic(EM)problemshasalsogrown-exponentially.Despitethisdramaticgrowth,however,theEMcommunitylackedacomprehensivetextonthecomputationaltechniquesusedtosolveEMproblems.ThefirsteditionofNumericalTechniquesinElectromagneticsfilledthatgapandbecamethereferenceofchoiceforthousandsofengineers,researchers,andstudents.TheSecondEditionofthisbestsellingtextreflectsthecontinuingincreaseinawarenessanduseofnumericaltechniquesandincorporatesadvancesandrefinementsmadeinrecentyears.Mostnotableamongthesearetheimprovementsmadetothestandardalgorithmforthefinitedifferencetimedomain(FDTD)methodandtreatmentofabsorbingboundaryconditionsinFDTD,finiteelement,andtransmission-line-matrixmethods.Theauthoralsoaddedachapteronthemethodoflines.NumericalTechniquesinElectromagneticscontinuestoteachreadershowtopose,numericallyanalyze,andsolveEMproblems,givethemtheabilitytoexpandtheirproblem-solvingskillsusingavarietyofmethods,andpreparethemforresearchinelectromagnetism.NowtheSecondEditiongoesevenfurthertowardprovidingacomprehensiveresourcethataddressesallofthemostusefulcomputationmethodsforEMproblems.
2018/2/19 3:06:37 38.85MB fortran 电磁数值方法
1
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
2018/3/13 22:56:28 9.43MB Modern Antennas
1
ThisuniqueresourceprovidesmicrowaveremotesensingprofessionalswithpracticalscatteringandemissiondatamodelsthatrepresenttheinteractionbetweenelectromagneticwavesandasceneontheEarthsurfaceinthemicrowaveregion.Thebookhelpsengineersunderstandandapplythesemodelstotheirspecificworkinthefield.CD-ROMIncluded!ItcontainsMathematicacodeforallthescatteringandemissionmodelspresentedthebook,sopractitionerscaneasilyusethemodelsfortheirownapplications.
2015/11/3 19:38:46 4.83MB 数值模拟
1
TimeHarmonicElectromagneticFieldsSolution时谐电磁场1-8章局部答案
2017/8/16 9:57:09 32.17MB Time Harmonic Solution Harrington
1
ElectromagneticCompatibilityPrinciplesandApplications非扫描可复制
2017/8/16 9:58:10 12.73MB 电磁兼容
1
(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。
2022/9/30 16:31:44 29.75MB 爬虫 python 源码软件 开发语言
1
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。
2024-04-09 15:03 15KB 钉钉 钉钉打卡