简介：非否定的矩阵因式分解(NMF)是为由把非否定性限制放在矩阵上的维数减小的一种技术。基于PARAFAC模型，NMF为三尺寸的数据被扩大分解。三尺寸的非否定的矩阵因式分解(NMF3)算法，简明、容易实现，在这篇论文被给。NMF3算法实现基于元素然而并非在向量上。没有展开，传统的算法，这能直接分解一个数据数组，它不类似于。它被用于模仿的数据数组分解并且获得了合理结果。它证明NMF3能在化学统计学为曲线分辨率被介绍。

简介：WeinvestigatethelateralshiftofaTM-polarizedlightbeamreflectedfromOttoconfigurationundergrazingincidence.Itisfoundthatthelateralshiftisstronglydependentonthethicknessoftheair-gaplayer.Byemployingthepole-nullrepresentation,wedemonstratethatthelateralshiftiscloselyrelatedtothenullofthereflectionfunction.ThenumericalsimulationsforaGaussianbeamareperformedtodemonstratethevalidityofourtheoreticalanalysis.

简介：无

简介：

简介：ThispaperisconcernedwiththeCauchyproblemofaseventhorderdispersiveequation.Weprovelocalwell-posednesswithinitialdatainSobolevspacesHs(R)fornegativeindicesofs>-11/4.

简介：Magneticlocalizedsurfaceplasmonmodesaresupportedonmetallicspiralstructures.Couplingmechanismsforthesemetamaterialresonators,whicharethejointactionofmagneticandelectriccoupling,arestudied.Basedonthestrongcoupling,spoofmagneticplasmonmodespropagatinginthebackwarddirectionareproposedalongachainofsubwavelengthresonators.Thetheoreticalanalysis,numericalsimulations,andexperimentsareingoodagreement.Theproposednovelrouteforachievingnegative-indexwaveguidinghaspotentialapplicationsinintegrateddevicesandcircuits.

简介：Mostpatientswithtrauma-hemorragicshock,priortoICUadmission,havebeenresuscitatedandstabilizedintheemergencyroom(ER)and/oroperationroom(OR).Manyofthemsufferfromsystemicedema.Thisextra-vascularfluidiscausedbymassiveinfusionoffluidandbloodforthemaintenanceofbloodpressure.Duringtherecoverystage,thepatientsexhibitspontaneousdiuresisfollowedbynegativefluidbalance.Urinevolumesofsomepatientsaremorethan10000ml/d.Doweneedtomaintainabalancebetweendailyinputandoutputofwateratthissituation?

简介：AIMTodeterminewhetherthenumberofexaminedlymphnodes(LNs)iscorrelatedwiththeoverallsurvivalofgallbladdercarcinoma(GBC)patients.METHODSPatientswerecollectedfromtheSurveillanceEpidemiologyandEndResultsdatabase(2004-2013)andcategorizedbythenumberofLNsintosixgroups:1LN,2LNs,3LNs,4LNs,5LNs,and≥6LNs.SurvivalcurvesforoverallsurvivalwereplottedwithaKaplan-Meieranalysis.Thelog-ranktestwasusedforunivariatecomparisons.RESULTSInacohortof893patients,themediannumberofexaminedLNswastwofortheentirecohort.Thesurvivalforthe1LNgroupwassignificantlypoorerthanthoseofthestageⅠandⅡdiseasegroupsandfortheentirecohort.BydichotomizingthenumberofLNsfrom1to6,wefoundthattheminimumnumberofLNsthatshouldbeexaminedwasfourforstageⅠ,fourorfiveforstageⅡ,andsixforstageⅢAdisease.Therefore,fortheentirecohort,thenumberofexaminedLNsshouldbeatleastsix,whichisexactlyconsistentwiththeAmericanJointCommitteeonCancercriteria.CONCLUSIONTheexaminationofhighernumbersofLNsisassociatedwithimprovedsurvivalafterresectionsurgeryforN0GBC.TheguidelinesforGBCsurgery,whichrecommendthatsixLNsbeexaminedatleast,arestatisticallyvalidandshouldbeappliedinclinicalpracticewidely.

简介：Inthispaper,wepresentamoresimpleandmuchshorterproofforthemainresultinthepaper'Annegativeanswertoaconjectureontheself-similarsetssatisfyingtheopensetcondition',whichwaspublishedinthejournalAnalysisinTheoryandApplicationsin2009.

简介：以便在量井思考类型波导解决过多的插入损失和低开／关比率光开关，新奇InGaAs/InAlAs联合了量很好结构被建议。在低应用电场(F=19kV/cm)和低吸收损失的情况中(伪鈮?1.2厘米?1)，一个大否定导致地的折射索引变化(螖n=?0.0134)在操作波长在新奇的联合的量井结构被获得(位=1550nm)。值在上述一样的工作条件上在一口矩形的量井(RQW)由与那相比的超过一～二个数量级是更大的。CLC数字TN365不到资助号码60277034和60436020由中国的国家自然科学基金会支持了

简介：Thecut-offnegativepressuremethodisoneofeffectiveapproachestosolvetheseepageflowwithfreesurface.Accordingtothecharacteristicsofthismethod,however,ithasbeenfoundoutthatthedeficiencyofthealgorithmsistoeasilycauseinaccuratesimulationinthevicinityoffreesurfaceowingtothepenaltyfunctionwithonlyonecontrollingpenaltyparameter.Therefore,animprovedcut-offpressuremethodwaspresentedbyconstructingpenaltyfunctionwithtwocontrollingpenaltyparameters.Theimprovedalgorithmswereillustratedtobeabletoimprovethesimulationaccuracyandraisetheconvergencespeedthroughconsideringtheeffectsofthepartiallysaturatedorunsaturatedelementsmorereasonablyandcalculatingthenodalexternalforcesmoreaccurately.Finally,theimprovedcut-offnegativepressuremethodwasappliedtothesimulationofunsteadyseepageflowwithfreesurface,andthecorrespondingprogramcodesweredevelopedwithvalidationofsomecases.

简介：Inaccordancewithnonperturbativequantumscatteringtheory,weinvestigatephotoelectronangulardistributions(PADs)fromabove-thresholddetachment(ATD)ofnegativeionsirradiatedbycircularlypolarizedfew-cyclelaserfields.Electronsejectedonthepolarizationplanedemonstratedistinctanisotropiesinangulardistributionswhichdistinctlyvarywiththecarrier-envelope(CE)phase.Theanisotropyiscausedbyinterferencebetweentransitionchannels;italsodependsstronglyonlaserfrequency,pulseduration,andkineticenergyofphotoelectrons.Optimalemissionofphotoelectrons,whichvarieswithCEphase,makesitpossibletocontrolphotoelectronmotion.

简介：Weintroduceanewmodelofone-dimensional(1D)photoniccrystalcomposedofalternatelyarrangedRHMandLHMlayerswithpositiveandnegativerefractiveindicesrespectively,forwhichthetransmissionspectraofthemodelarecalculatednumericallywiththetransfermatrixmethod,andtheband-gapstructureandthepolarizationpropertiesareanalyzed.Wefoundthattheintroductionofnegativerefractiveindexlayers(i.e.LHMmediumlayers)givesrisetosomepeculiarband-gapstructureandpolarizationpropertiesasfollows.Firstly,theforbiddenbandsareextremelywideandthetransmissionbandsareverysharpwithoutoscillation;andsecondly,thechangeofincidentanglehasdifferentinfluencesontheforbiddenbandsofTEandTMmodes.FortheTMmode,theforbiddenbandwidthdecreasessubstantiallyandfinallyvanishes,andfortheTEmodewithcentralwavelength,thetotalreflectionhappensatanyincidentangle.

简介：Thetargetofthelargenegativeionsourcebasedonneutralbeaminjection(N-NBI)istoproduceneutralbeamcurrentof22Aandbeampowerof10MWat500keVwithdurationtimeof10s.Sinceitwassuccessfullyoperatedin1996,the5.3MWneutralbeampowerat380keVwithdurationtimeof3shasbeenachieved.Inrecentyearsimprovingandenhancingthebeampoweraregoingon.Severalreasonssuchasplasmanon-uniformity,higherbeamdensityattheupperregioninthebeamprofile,

简介：Opticalemissionspectroscopy(OES)usingthetraceraregasesofArandXehavebeencarriedoutinaradiofrequency(RF)drivennegativeionsourceatInstituteofPlasmaPhysics,ChineseAcademyofScience(ASIPP),inordertodeterminetheelectrontemperatureanddensityofthehydrogenplasma.Theline-ratiomethodsbasedonpopulationmodelsareappliedtodescribetheradiationprocessoftheexcitedstateparticlesandestablishtheirrelationswiththeplasmaparameters.Thespectrallinesfromtheargonandxenonexcitedstateatomswiththewavelengthof750.4and828.0nmareusedtocalculatetheelectrontemperaturebasedonthecoronamodel.Theargonionsemissionlineswiththewavelengthof480and488nmareselectedtocalculatetheelectrondensitybasedonthecollisionalradiativemodel.OEShasgiventhepreliminaryresultsoftheelectrontemperatureanddensitybyvaryingthedischargegaspressureandRFpower.Accordingtotheexperimentalresults,thetypicalplasmaparametersisTe2≈2-4eVandne≈1x1017-8x1017m^-3infrontofplasmagrid.

简介：Inthispaper,wepresentanovelapproachtosynthesizingfrontalandsemi-frontalcartoon-likefacialcaricaturesfromanimage.Thecaricatureisgeneratedbywarpingtheinputfacefromtheoriginalfeaturepointstothecorrespondingexaggeratedfeaturepoints.A3Dmeanfacemodelisincorporatedtofacilitatefacetocaricaturesbyinferringthedepthof3Dfeaturepointsandthespatialtransformation.Thenthe3Dfaceisdeformedbyusingnon-negativematrixfactorizationandprojectedbacktoimageplaneforfuturewarping.Toefficientlysolvethenonlinearspatialtransformation,weproposeanovelinitializationschemetosetupLevenberg-Marquardtoptimization.Accordingtothespatialtransformation,exaggerationisappliedtothemostsalientfeaturesbyexaggeratingtheirnormalizeddifferencefromthemean.Non-photorealisticrendering(NPR)basedstylizationcompletesthecartooncaricature.Experimentsdemonstratethatourmethodoutperformsexistingmethodsintermsofviewanglesandaestheticvisualquality.

简介：Here,wereportthesynthesisofhardcarbonmaterials(RH)madefromnaturalricehuskthroughasinglepyrolysisprocessandtheirapplicationasananodeinsodium-ionbatteries.ThestudiesshowthattheelectrochemicalpropertiesofRHsareaffectedbythetreatmenttemperatures,whichdeterminethematerialsmorphology,inparticular,theirdegreeofgraphitizationandextentofcontinuouschannels(nanovoids).Thelatterareaccessibletosodiumionsandsignificantlycontributetochargestoragecapacityoftheproducedanodes.TheRHsobtainedat1600°Cdeliverthehighestreversiblecapacityof276mAhg-1mainlyduetoinsertionofsodiumionsintothenanovoids.Thisworkdeepensthebasicunderstandingoftheinfluenceofthecarbonizationtemperatureonthesodiumstoragemechanism.

简介：Anewlightninglocatingtechnology,calledLightningMappingArray(LMA),hasbeendeveloped.ThesystemtakesadvantageofGPStechnologytomeasurethetimesofarrival(TOA)oflightningimpulsiveveryhighfrequency(VHF)radiationeventsateachremotelocation.Thespatiotemporaldevelopmentprocessesoflightningaredescribedinthree-dimensionbymeasurementofthesystemwithhightimeresolution(50ns)andspaceprecision(50-100m).Thechargestructuresinthunderstormandtheirrelationshipwithlightningdischargeprocessesarerevealed.Thetemporalandspatialcharacteristicsofpreliminarybreakdownprocessinvolvedinnegativecloud-to-ground(CG)lightningdischargesareanalyzedbasedonthedataoflightningVHFradiationevents.TheeffectofpositivechargeregioninlowerpartofthunderstormontheoccurrenceofnegativeCGlightningdischargeisdiscussed.TheresultsindicatethatthepreliminarybreakdownprocesswithlongerdurationinnegativeCGlightningdischargesisanintraclouddischargeprocess.Itoccursbetweennegativeandpositivechargeregionslocatedinmiddleandlowerpartsofthunderstormrespectively.Itinitiatesfromthenegativechargeregionandpropagatesdownward.Afterpropagatingintothepositivechargeregion,thelightningchanneldevelopshorizontally.Thecharacteristicsofthepreliminarybreakdownprocessareconsistentwiththatofintracloudlightningdischarges.ThesteppedleadersareinitiatedbytheKtypebreakdownwhichoccursinthelaststageofthepreliminarybreakdownprocessanddevelopsdownwardthroughthepositivechargeregion.TheexistenceofpositivechargeregioninlowerpartofthunderstormresultsintheoccurrenceofpreliminarybreakdownprocesswithlongerdurationbeforethereturnstrokeofnegativeCGlightningdischarges.

简介：无

简介：客观：击倒链球菌mutans(S.mutans)的全部勒克司基因经由相应再结合和构造的UA159紧张S的删除勒克司的变异的紧张。Mutans。学习S的酸抵抗之间的差别。MutansIngbrittC国际标准紧张和勒克司变异的紧张的酸抵抗。方法：二DNA碎裂定位在勒克司上面、下游基因被放大，在他们之间的PJT10的抗生素的一种抵抗基因被设计进PUC19为构造再结合的plasmidplasmidpUCluxKO。S.mutans房间与的ElectrotransformationpUCluxKO变异导致了抗生素的一种的隔离抵抗S。Mutanstransformants，它被聚合酶链反应，V.harveyiBB170光生物鉴定和定序的分析识别。S的答案。有一样的密度的Mutans标准紧张和勒克司变异的紧张被做并且在pH有教养为一样的period.Terminal生长状况的3.5～7.0BHI液体compared.Firstly在pH被酸化5.5BHI液体，二紧张在pH是有教养的3.0BHI液体。二紧张的酸忍耐回答是compared.Results:限制endonuclease分析证明那pUCluxKO变异的向量成功地被重新结合。S.mutans异种的删除勒克司的地位被PCR与为勒克司和抗生素的一种抵抗的基因特定的教材证实。S.mutans异种不能导致生物体之发光，indiating异种成功地被重新结合。在文化的二十代以后，构造中国S.mutans异种被证实稳定。aciduricity的重要差别在S.mutans标准紧张和标准紧张的抵抗是的勒克司变异的strain.The酸之间被观察比二紧张两个都显示了的勒克司变异的strain.The的强壮酸忍耐回答的能力。结论:S.mutans基因突变而产生之遗传的交换plasmid校正地被构造并且一S.mutans的勒克司否定的异种被构造，它能帮助推进在S.mutans的致病学习勒克司的角色。勒克司变异的紧张对酸忍耐回答的酸inactivation，而是能力更敏感仍然存在。