简介：ＰｒａｃｔｉｃａｌＤｒｉｖｅａｎｄＰｒｏｔｅｃｔｉｏｎＣｉｒｃｕｉｔｓｆｏｒｔｈｅＩＧＢＴ①ＧＵＨｅｒｏｎｇ，ＺＨＡＮＧＣｈｕｎｊｉａｎｇ，ＬＩＵＹａｎｍｉｎ（ＹａｎｓｈａｎＵｎｉｖｅｒｓｉｔｙ，Ｑｉｎｈｕａｎｇｄａｏ０６６００４，ＣＨＮ）Ａｂｓｔｒ...

简介：Shen Guorong. RESEARCH ON PRINCIPLE OF DPFC DIRECTIONAL RELAY. AUTOMATION OF ELECTRIC POWER SYSTEMS.1983,Shen Guorong. RCS-978 DIGITAL TRANSFORMER PROTECTION SET. AUTOMATION OF ELECTRIC POWER SYSTEMS.2000,Zheng Yuping. LFP-915 DIGITAL BUSBAR PROTECTION SET. AUTOMATION OF ELECTRIC POWER SYSTEMS.2000

简介：DPFC percentage restraint differential protection makes use of DPFC in phase current on each side of transformer and DPFC in differential current,Fault on and near busbar is the most serious fault for electric power system transient state stability. Clearing such kind of fault quickly is key to keep system stability. As to line protection,Inter-turn fault is the main kind of fault in electric power transformer. It is meaningful that employing sensitive and secure protection to identify inter-turn fault inside power transformer. In RCS-978 series power transformer protection

简介：Environmentalproblemsarethecommonchallengefacedbyhumanbeingsduringtheprocessofdevelopment.Fortheresolvingofenvironmentalproblems,Chinahasmadegreateffortsandachievedsignificantresults,whichnotonlypromotedthescientificdevelopmentofChina,butalsomadeapositivecontribution

简介：Sincetheverypurposeofastatethatgainspoweristomaintainsocialorderandincreasepeople'sinterests,thestateisentitledtometeoutpunishmentforanyviolationsofpublicorderoranyoffensestothecommunity.Thisistheminimumobligationofastatetoprotectitspeople.Fromtheperspectiveoftheoperationofstatepower,adespoticstatetakesexecutivepowerasitscore.Executivepowerisnotonlythepowerthatkick-starts,butalsothepowerthathasthefinalsay.Sinceparliamentary

简介：Inrecentyears,theWesthasbeenpracticing'newinterventionism'underthesignboardof'ResponsibilitytoProtect'('R2P')andthecoverof'humanitarianintervention',whichruns

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简介：I.OutlineInordertocopewithvariouscrises,morethan80countriesintheworldhavedeclaredemergencystatesince1985.Sotospeak,'emergencystatesarea

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简介：TheResearchReportonYoungGirlProtectionjointlyissuedbyChinaChildrenandTeenagers’FundandBeijingNormalUniversityinBeijingonSeptember13,2013statesthatthedirectcauseforharmsdonetoyounggirlsisthelackofbasicsupervision.Ms.ChenXiaoxia,Secretary-GeneralofChinaChildrenandTeenagers’Fundsaidduringtheintroductionofthe

简介：Anovelpre-ionizationschemeofhelicaltransverse-pulsedpre-ionizationinalongitudinaldischargeCO2laserispresented.Thelasertubeismadeofglasswithinnerdiameterof7.5mmanddischargelengthof50cm.Thelaserperformancecharacteristicsasfunctionsofparameters,suchaspressure,chargingcapacitanceandappliedvoltage,areinvestigated.Comparedwiththesamelaserstructurewithoutpre-ionization,themaximumpulseenergyimprovesby23%,theoptimumelectro-opticalefficiencyincreasesby31%,andthespecificoutputenergyreaches26J/(L·atm).

简介：在有卡住大头针的边界条件的非局部的nanobeams的postbuckling配置附近的非线性的免费颤动是调查的经分解，认为从中间飞机的拉长并且特别地产生的几何非线性是一个纵的磁场的效果。当应用轴的力量是小的时，nanobeam是稳定的，它的免费颤动在直平衡位置附近。当轴的力量变得大并且在某个批评价值(批评轴的力量)以外，然而，积极或否定的重要平衡配置发生，免费颤动在弄弯的配置附近。当为弄弯的nanobeam它包含立方、二次的非线性时，为在弄弯前的nanobeam的管理方程展出立方的非线性。基于非线性的管理方程，postbuckling配置的近似分析解决方案以应用轴的力量被评估，证明磁场参数在批评轴的力量，弄弯的排水量和nanobeam系统的线性频率上有大效果。更有趣地，当它能是比在postbuckling政体的情况中的线性的低的时，非线性的频率被发现通常比在prebuckling政体的情况中的线性频率高。非线性的频率能被磁场，与中间飞机的拉长联系的非线性的系数，和起始的颤动振幅显著地影响。

简介：Thevibrationproblemofapileofarbitrarysegmentswithvariablemodulusunderexcitingforceisestablished,inwhichtheinfluenceofthesoilunderpiletoeandthesurroundingsistakenintoaccount.WithLaplacetransforms,thetransmitfunctionsforvelocityanddisplacementofpilearederived.Furthermore,intermsoftheconvolutiontheoremandinversedLaplacetransform,ananalyticalsolutionforthetimedomainresponseofapilesubjectedtoasemi-sineimpulseisdeveloped,whichisthetheoreticalbasisofthesonicmethodinpileintegritytesting.Basedonthesolution,thevibrationpropertiesofpilewithsharporcontinuousmodulusarestudied.Thevalidityofthisapproachisverifiedthroughfidddynamictestsonsomeengineeringpiles.Itshowsthatthetheoreticalpredictionandtheresponseofthepileareingoodagreement.

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简介：Metaltransferisanimportantphenomenoninmetalinertgas(MIG)arcweldingwithlongitudinalalternatingmagneticfield.Itisofgreatsignificancetoobservethemetaltransfermodesunderdifferentexcitatorycurrentsandfrequencies.However,itisverydifficulttoviewthemetaltransferprocessdirectlyduringwelding,duetothestronginterferencefromthearclight.Toobtaintherelationshipbetweenthemetaltransfermodesandthedifferentmagneticfields,ahigh-speedvideocamerawasusedtoacquiretheimagesofglobules.Differentmetaltransfermodesundertheconditionsofdifferentmagneticfieldsandweldingparameterswerestudied.Theexperimentshowsclearimagesofdroplettransferaswellasinfluenceoflongitudinalmagneticfieldonbothmetaltransferandglobuleshape.

简介：TheuseofabackgroundplasmainadielectricCherenkovmasercaneffectivelyincreasetheefficiencyandthemicrowaveoutputpowerofthedevice.Here,theeffectofthelongitudinaluniformmagneticfieldonthewave-beaminteractionoftheplasma-filleddielectricCherenkovmaserisexaminedbysolvingthebeam-plasma,dielectriclinedwaveguidedispersionequation.Andtheeffectsofthelongitudinalmagneticfield,plasmadensityanddielectricparametersonthelinearspatialgrowthrateandtheenergyratioarepresented.

简介：Jinshajianghydropowerbasesbegantotakemeasurestoprotectecologicalenvironmentwhileinitiatinghy-dropowerproject.ChinaYangtzeThreeGorgesEngineeringDevelopmentCorporationinvestednearly500millionYuaninwaterandsoilconservationandconstructionofecologicalenvironment.AccordingtotheBriefReportonComprehensiveUti-lizationProgramforYangtzeValleyapprovedbytheState

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简介：Theconceptofhumanrightshasalreadybecomethesharedvalueofthemajorityofcountriesintheinternationalcommunity.However,realizationofhumanrightsisdecidednotonlybyloftyidealsbutalsopragmaticvalues.Thatis,canhumanrightsbeusedforsolvingmajorissuesofsociety?Withregardtothepragmaticvalueofhumanrights,therelationshipbetweenhumanrights

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