简介：Inthisarticle,wemainlydiscusstheasymptoticbehaviorformulti-dimensionalcontinuous-timerandomwalkinrandomenvironmentwithholdingtimes.Byconstructingarenewalstructureandusingthepoint'environmentviewedfromtheparticle',underGeneralKalikow'sCondition,weshowthelawoflargenumbers(LLN)andcentrallimittheorem(CLT)fortheescapespeedofrandomwalk.

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简介：Developinganelectrostaticdischarge(ESD)protectiondevicewithabetterlatch-upimmunityhasbeenachallengingissueforthenanometercomplementarymetal-oxidesemiconductor(CMOS)technology.Inthiswork,animprovedgrounded-gateN-channelmetal-oxidesemiconductor(GGNMOS)transistortriggeredsilicon-controlledrectifier(SCR)structure,namedGGSCR,isproposedforhighholdingvoltageESDprotectionapplications.TheGGSCRdemonstratesadoublesnapbackbehaviorasaresultofprogressivetrigger-onoftheGGNMOSandSCR.Thedoublesnapbackmakestheholdingvoltageincreasefrom3.43Vto6.25Vascomparedwiththeconventionallow-voltageSCR.TheTCADsimulationsarecarriedouttoverifythemodesofoperationofthedevice.

简介：Becauseofthedistinctionofsoilpropertyandhumuscontent,soilwatercontentisnotidealtoindicatewhetheritissuitabletothegrowthofplant.MainlybasedonthePF-anumericalvaluedenotingthewaterregimeofsoilandconnectedwiththegrowthofplant,thestudycombinedthemoisturepercentageofsoilwithPFtoresearchinquantitytheinterrelationbetweenthemoisturepercentageandPFindifferentsuccessionphasesofsubalpinedarkconiferousforestinGonggaMountain.Theresultsshowedthat:(1)InthesamePFvalue,themoisturepercentageinhumushorizonincreasedgraduallywiththedevelopmentofthesuccessionofthedarkconiferousforest;Themoisturepercentageofover-matureforestwasthehighestand>matureforest>half-matureforest>younggrowthforest;(2)Withtheincreaseofsoildepth,thesoilbulkdensityincreasedandthemoisturepercentagedecreased,butthedifferenceinthepercentageofmoisturewasnotnotableindifferentsuccessionphases.(3)Indifferentsuccessionseries,thevegetationaffectedthesoilwatercharacteristicsbyincreasingthesoilorganicmatter,improvingthesoilconstruction,recedingthesoilbulkdensityandenhancingthesoilporosity;(4)Thehumushorizonofthedarkconiferousforestsoilhasthehighestwaterholdingcapabilityinthisregion.

简介：Theeffectsofconcurrentpulsesinholdingdurationonsuperplasticityof2091Al-Lialloyhavebeeninvestigatedinthispaper.Theresultsofsuperplasticdeformationshowedthatconcurrentpulsesinholdingdurationdecreasedtheoptimumholdingtimeforsuperplasticdeformation(ε=3.33×10-2s,T=500℃)from15to5minandincreasedelongation（δ）from530to550%.Themetallographicobservationsshowedthatthespecimensappliedlybyconcurrentpulsewerecom-pletelyrecrystallizedafterholding5minat500℃,andgrainsrefinedtoabout2μm,andthosespec-imensunappliedcurrentpulseswerepartlyrecrystallizedevenafterholding15minat500℃.theelectronprobeanalysesindicatedthatconcurrentpulsespromotedatomicdiffusion.Itispointedoutthatconcurrentpulsesaccelerateatomdiffusionanddislocationmotion.increasenucleationrateofrecrystallizationanddecreasetheoptimumholdingtimeforsuperplasticdeformationandincreasesuperplasticproperties.

简介：Thispaperstudiesatwostagesupplychainwithadominantupstreampartner.ManufactureristhedominantpartnerandoperatesinaJust-in-Timeenvironment.Productionisdoneinasinglemanufacturinglinecapableofproducingtwoproductswithoutstoppingtheproductionforswitchingfromoneproducttotheother.Themanufacturerimposesconstraintsonthedistributorbyadheringtohisfavorableproductionschedulewhichminimizeshismanufacturingcost.Distributorontheotherhandcaterstoretailers'orderswithoutincurringanyshortagesandisresponsibleformanagingtheinventoryoffinishedgoods.Adheringtomanufacturer'sschedulemayleadtohighinventorycarryingcostsforthedistributor.Distributor'sproblem,whichistofindanoptimaldistributionsequencewhichminimizesthedistributor'sinventorycostundertheconstraintimposedbythemanufacturerisprovedNP-HardbyManojetal.(2008).Therefore,solvinglargesizeproblemsrequireefficientheuristics.Wedevelopalgorithmsforthedistributionproblembyexploitingitsstructuralproperties.Weproposetwoheuristicsandusetheirsolutionsintheinitialpopulationofageneticalgorithmtoarriveatsolutionswithanaveragedeviationoflessthan3.5%fromtheoptimalsolutionforpracticalsizeproblems.

简介：连续退火模拟测试被使用一个连续退火thermomechanical模拟器进行。为退火的intercritical的5，60，180，和480秒的成立时间820的温度？

简介：ThediffusionbondingofAZ3\BMgalloyandQ235steelwasinvestigatedwithaZn-5AIalloyasinterlayerandunderdifferentholdingtimerangingfrom3to1200s.Themicrostructureandphasecompositionsofbondedjointswerecharacterizedbyscanningelectronmicroscopy(SEM),energydispersivespectrometer(EDS)andX-raydiffraction(XRD)methods.TheshearstrengthofMgalloy/steeljointswasmeasuredbytensiletester.Itwasfoundthatthemicrostructureofbondedjointsevolveddramaticallyalongwiththeprolongationofholdingtime.Undertheholdingtimeof3s,themainpartofjointwascomposedofMgZn2phaseanddispersedAl-richsolidsolutionparticles.Whenincreasedtheholdingtimemorethan60s,theexcessivesolutionofAZ3\Bintotheinterfacialreactionarealedtotheformationofcoarsephaseandeutecticmicrostructure,andalsothecomplexFe-AlandMg-Al-ZnIMCsattransitionlayerclosedtoQ235steelside.Accordingtothetensiletestingcharacterizations,thejointsobtainedunderholdingtimeof3sexhibitedthebestshearstrengthof84MPa,andthefractureoccurredattheintermediarypartofjointwheretheflexibleAl-richsolidsolutionparticlescouldhelptoimpedethemicrocrackpropagations.Withprolongingtheholdingtimeto600s,theshearstrengthofjointswasdeterioratedenormouslyandthefracturepositionwasshiftedtothetransitionlayerpartclosedtoQ235steel.

简介：11月13日，第31届东南亚国家联盟（东盟）峰会在菲律宾首都马尼拉正式开幕，菲律宾环球镍业控股有限公司（FNI）与俄罗斯工业投资集团ViHoldingLLC公司就能源领域的合作问题签署了一项正式协议。