简介：Alargeearthquake(MW=7.6)occurredinJiji(Chi-Chi),Taiwan,ChinaonSeptember20,1999,andwasfollowedbymanymoderate-sizeshocksinthefollowingdays.TwoofthelargestaftershockswiththemagnitudesofMW=6.1andMW=6.2,respectively,wereusedasempiricalGreen(sfunctions(EGFs)toobtainthesourcetimefunctions(STFs)ofthemainshockfromlong-periodwaveformdataoftheGlobalDigitalSeismographNetwork(GDSN)includingIRIS,GEOSCOPEandCDSN.FortheMW=6.1aftershockofSeptember22,therewere97pairsofphasesclearenoughfrom78recordingsof26stations;fortheMW=6.2aftershockofSeptember25,therewere81pairsofphasesclearenoughfrom72recordingsof24stations.Foreachstation,2typesofSTFswereretrieved,whicharecalledP-STFandS-STFduetobeingfromPandSphases,respectively.Totally,178STFindividualswereobtainedforsource-processanalysisofthemainshock.Itwasnoticedthat,ingeneral,STFsfrommostofthestationshadsimilaritiesexceptthatthoseinspecialazimuthslookeddifferentoroddduetothemechanismdifferencebetweenthemainshockandtheaftershocks;andindetail,theshapesoftheSTFsvariedwithazimuth.BothofthemreflectedthestabilityandreliabilityoftheretrievedSTFs.ThecomprehensiveanalysisofthoseSTFssuggestedthatthiseventconsistedoftwosub-events,thetotaldurationtimewasabout26s,andontheaverage,thesecondeventwasabout7slaterthanthefirstone,andthemoment-rateamplitudeofthefirsteventwasabout15%largerthanthatofthesecondone.

简介：Inthispaper,asurfacepotentialbasedthresholdvoltagemodeloffully-depleted(FD)recessed-source/drain(Re-S/D)silicon-on-insulator(SOI)metal-oxidesemiconductorfield-effecttransistor(MOSFET)ispresentedwhileconsideringtheeffectsofhigh-kgate-dielectricmaterialinducedfringing-field.Thetwo-dimensional(2D)Poisson’sequationissolvedinachannelregioninordertoobtainthesurfacepotentialundertheassumptionoftheparabolicpotentialprofileinthetransversedirectionofthechannelwithappropriateboundaryconditions.Theaccuracyofthemodelisverifiedbycomparingthemodel’sresultswiththe2DsimulationresultsfromATLASoverawiderangeofchannellengthsandotherparameters,includingthedielectricconstantofgate-dielectricmaterial.

简介：【摘要】在当前以高质量发展为主题的新发展阶段，社会主义建设人才的培养更加需要坚定的信仰、高尚的道德。因此，思想政治教育显得更为重要。如何应对西方思想对国内青少年的不良影响，对青少年价值观起到正确的引导，发挥思政课“立德树人”主阵地的作用是一线思政教师的一项重大任务。基于此，本文以《毛泽东思想和中国特色社会主义理论体系概论》教学为基础，探索“体验感悟式教学”模式，进一步提高思政课“立德树人”主阵地作用。

简介：ObjectiveTwoimportantgeologicalissueshavelongbeencontroversialintheXing–MengareaofNorthChina.ThefirstconcernsthefinalclosureofPaleo-AsianOceaninXing–Mengarea,andtheotherconcernsthefoldingandliftingoftheXing-MengTrough.ThefocusofthsesissuesistheLatePermiansedimentaryenvironment,whichis

简介：摘要：根据国家节能减排政策，长沙市人民政府规定建筑面积达20000m2以上公建项目，要求整个项目的能耗中可再生能源的利用率超过30%。地质科技楼项目的中央空调系统通过现场测试、方案比选，采用地源热泵+水冷螺杆机组+风冷热泵机组的组合系统。重点介绍了地源热泵的施工流程及设计、施工中应注意的事项，系统建立后，通过控制系统优化运行模式，确保系统在最佳能效状态下运行，和传统中央空调系统相比，运行成本节约30%以上，取得了较好的经济效益和社会效益。