简介：Enumerationofperfectmatchingsongraphshasalongstandinginterestincombinatorialmathematics.Inthispaper,weobtainsomeexplicitexpressionsofthenumberofperfectmatchingsforatypeofArchimedeanlatticeswithtoroidalboundarybyapplyingTesler'scrossingorientationstoobtainsomePfaffianorientationsandenumeratingtheirPfaffians.

简介：VesselMonitoringSystem(VMS)providesanewopportunityforquantifiedfishingresearch.ManyapproacheshavebeenproposedtorecognizefishingactivitieswithVMStrajectoriesbasedonthetypesoffishingvessels.However,oneresearchproblemisstillcallingforsolutions,howtoidentifythefishingvesseltypebasedononlyVMStrajectories.ThisproblemisimportantbecauseitrequiresthefishingvesseltypeasapreliminarytorecognizefishingactivitiesfromVMStrajectories.Thispaperproposesfishingvesseltypeidentificationscheme(FVID)basedonlyonVMStrajectories.FVIDexploitsfeatureengineeringandmachinelearningschemesofXGBoostasitstwokeyblocksandclassifiesfishingvesselsintoninetypes.ThedatasetcontainsallthefishingvesseltrajectoriesintheEastChinaSeainMarch2017,including10031pre-registeredfishingvesselsand1350unregisteredvesselsofunknowntypes.Inordertoverifytypeidentificationaccuracy,wefirstconducta4-foldcross-validationonthetrajectoriesofregisteredfishingvessels.Theclassificationaccuracyis95.42%.WethenapplyFVIDtotheunregisteredfishingvesselstoidentifytheirtypes.Afterclassifyingtheunregisteredfishingvesseltypes,theirfishingactivitiesarefurtherrecognizedbasedupontheirtypes.Atlast,wecalculateandcomparethefishingdensitydistributionintheEastChinaSeabeforeandafterapplyingtheunregisteredfishingvessels,confirmingtheimportanceoftypeidentificationofunregisteredfishingvessels.

简介：InthisworkweanalyzethecharacteristicsofquantumentangleinentoftheDiracfieldinnoninertialreferenceframesinthecontextofanewtypepseudo-purestate,whichiscomposedoftheBellstates.Thiswillhelpustounderstandtherelationshipbetweentherelativityandquantuminformationtheory.SomestateswillbechangedfromentangledstatesintoseparableonesaroundthecriticalvalueF=1/4,butthereisnosuchacriticalvalueforthevariableyrelatedtoaccelerationa.WefindthatthenegativityNas(ρ^TAAB1)increaseswithFbutdecreaseswiththevariabley、whilethevariationofthenegativityNb1b11(ρ^TB1B1B11)isoppositetothatofthenegativityNAB1(ρ^TAAB1).WealsostudythevonNeumannentropiesS(ρAB1)andS(ρB1B11)、WefindthattheS(ρAB1)increaseswithvariableybutS(ρB1B11)isindependentofit.However,bothS(ρAB1)andS(ρB1B11)firstdecreaseswithFandthenincreaseswithit.TheconcurrencesC(ρAB1)andC(ρB1B11)arealsodiscussed.WefindthattheformerdecreaseswithywhilethelatterincreaseswithybutbothofthemfirstincreasewithFandthendecreasewithit.

简介：Anelectrochromiccopolymerfilmof2-(3,3-dihexyl-3,4-dihydro-2H-thieno[3,4-b][1,4]dioxepin-6-yl)-7-(3,3-dihexyl-3,4-dihydro-2H-thieno[3,4-b][1,4]dioxepin-8-yl)-9H-carbazole(M1)and4,7-bis(thiophen-2-yl)benzo[c][1,2,5]thiadiazole(M2)waspreparedviaelectrochemicaltechnique.Thecopolymerizationwasperformedwithonetoonemonomerfeedratio.Electrochemicalandopticalpropertiesoftheresultingcopolymerfilm(P3)andthehomopolymerfilmsofM1andM2(P1andP2)wereinvestigatedbyusingcyclicvoltammetryandUV-Visspectrometrytechniques,andthecorrespondingresultswerecompared.IncorporationofM1andM2intocopolymermatrixwasclearlyobservedontheresultingcyclicvoltammogramsandUV-Visspectra.P3coveredthevisibleregionscomingfrombothP1andP2,andexhibitedaneutralstatedarkercolorthanthoseofhomopolymers.P3filmwasfoundtohaveamultichromicbehavior,appearingasbrowninitsneutralstatewhilechangingitscoloruponoxidationtodark-gray(atabout0.3V),toblue(atabout0.6V)andfinallytograyishcyan(beyond0.9V),withacorrespondingopticalbandgapof1.65eV.

简介：InsectshavealargefamilyofC-typelectinsinvolvedincelladhesion,pathogenrecognitionandactivationofimmuneresponses.Inthisstudy,32transcriptsencodingC-typelectindomainproteins(CTLDPs)wereidentifiedfromtheThitarodesxiaojinensistranscriptome.Accordingtotheirdomainstructures,sixCTLDPswithonecarbohydraterecognitiondomain(CRD)wereclassifiedintotheCTL-Ssubfamily.Theother23CTLDPswithtwoCRDsweregroupedintotheimmulectin(IML)subfamily.TheremainingthreewithextraregulatorydomainsweresortedintotheCTL-Xsubfamily.PhylogeneticanalysisshowedthatCTL-SandCTL-Xmembersfromdifferentinsectscouldformorthologousgroups.Incontrast,noT.xiaojinensisIMLorthologueswerefoundinotherinsects.Remarkablelineage-specificexpansioninthissubfamilywasobservedreflectingthattheseCTLDPs,asimportantreceptors,haveevolveddiversifiedmembersinresponsetoavarietyofmicrobes.PredictionofbindingligandsrevealedthatT.xiaojinensis,acoldadaptedspecies,conservedtheabilityofCRDstocombinewithCa^2+tokeepitsreceptorsfromfreezing.ComparativeanalysisofinductionofCTLDPgenesafterdifferentimmunechallengesindicatedthatIMLsmightplaycriticalrolesinimmunedefenses.ThisstudyexaminedT.xiaojinensisCTLDPsandprovidesabasisforfurtherstudiesoftheircharacteristics.

简介：始终坚持毛泽东当时观点的吴冷西甚至把苏联对中国大跃进的批评也解释为,赫鲁晓夫......想控制中国,虽然中共对赫鲁晓夫的大国沙文主义非常不满

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简介：通过三步合成(E)-二(对3-硝基苯甲酸)乙烯(C16H10N2O8)配体,并由此通过溶剂热法合成金属有机框架材料Zn2(EBNB)2(BPY)2·2H2O;采用x射线单晶衍射分析、红外光谱(IR)和热重分析(TG)等对所得结构进行表征,并测试其荧光性能;以洛贝林为模型药物,研究了Zn2(EBNB)2(BPY)2·2H2O对该药物的载药及体外释药性能。研究结果说明,Zn2(EBNB)2(BPY)2·2H2O对洛贝林的最高载入量达0.355g/g,载药体系的体外释药为明显的两相模式。体外细胞毒性实验结果表明,Zn2(EBNB)2(BPY)2·2H2O具有良好的生物相容性。

简介：1、代表个人意见意见型代表的早期支持者认为代表需要关注的意见是选民的个人意见,后者可分为代表个人意见、代表公共意志和代表党派意见,五、代表的功能

简介：　　中国社会迷信爱讲命,　　而中国人讲气数,故讲命必兼讲运

简介：andthereductionofpublicandsocialexpenses.Economistsmaynotnecessarilysharetheeconomicandsocialinterestsofthetruebelieversandmayhaveavarietyofindividualpsychicstatesregardingtheeconomicandsocialeffectsoftheutopiawhichtheycloakwithmathematicalreason.Nevertheless,orbetteryetthesupranationalstate-aEuropeanstateonthewaytowardaworldstate-capableofeffectivelycontrollingandtaxingtheprofitsearnedinthefinancialmarketsand,onreservesofsocialcapitalthatprotectanentireportionofthepresentsocialorderfromfallingintoanomie.Thissocialcapitalisfatedtowitheraway-althoughnotintheshortrun-ifitisnotrenewedandreproduced.Butthesesameforcesof"conservation"

简介：Therearepowerfulpoliticalobstaclesbetweenpeople.Themainobstaclescomefromthesocialdemocraticmovement.IfwesucceedinovercomingtheseitwillleadtoagenuineThirdWaywhichwillbemuchmoreradical.Weneedtobuildtheleftoftheleft.Intheecologymovementyouhavepeoplewhoarereallyontheleft--evenamongtheCommunistParty,InFrancewehavethistraditionofworkerismwhichisanti-intellectual.Theunionsareveryhostiletointellectualsandtheintellectualsareverydistantfromworkers.In1968itwasveryvisible.NowforthefirsttimebecauseofthefailureofSovietMarxismwearefreefromthat.SoIcanspeakwithaCGTofficialasIamspeakingtoyou.Theyareveryopen.Inasenseintellectualslikemedidnotexist20yearsago.PeoplelikeSartreandFoucaultweresympathetictothemovement,Forcesotherthantheleftaretryingtogainahearing.SoweseetheHaiderphenomenoninAustria.Buthehasnotgoneunchallenged.TherecreationofatrueleftwingmovementwillbethemaininstrumentofthedestructionofHaider.NobodyspokeaboutLePenandtheNationalFrontinFranceduringthehotwinterof1995inFrance.ThemassmovementindefenceofpensionsinItalyalsomarginalisedthefarright.

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简介：通过涂覆热分解法制备了Ti/RuO2-ZrO2-SnO2、Ti/RuO2电极材料,采用X射线衍射(XRD)、扫描电镜(SEM)和循环伏安(CV)对电极材料进行表征,考察了电流密度、NaCl质量浓度、pH值及电极间距对废水COD降解率的影响。结果表明,Ti/RuO2-ZrO2-SnO2电极对COD具有更高的降解率,对其进行工艺优化。电极材料对废水降解的最佳工艺条件为电流密度40mA/cm^2,NaCl质量浓度4g/L,pH=5.0,电极间距10mm,COD的降解率达到90.5%。Ti/RuO2-ZrO2-SnO2电极中SnO2与RuO2生成固溶体,有利于增强涂层与基体之间的结合力,提高电极的稳定性;ZrO2起到细化晶粒的作用,致使电极表面粗糙度增加,增强了电极的电催化性能,且降解过程符合一级动力学模型。

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简介：A60%Fe/Al2O3catalystwaspreparedbytheco-precipitationmethod.ItwasreducedbyH2toproducemetallicFe,whichwasthensulfidedbyCS2toFe0.96SandFe3S4orphosphidedbytriphenylphosphine(PPh3)inliquidphasestoFe2PandFeP.Itwasfoundthattheironsulfides(Fe0.96SandFe3S4)exhibitedthelowactivityforthehydrodesulfurization(HDS)reactions.TheHDSactivitywasalsolowontheFe(metal)/Al2O3andFe2P/Al2O3catalystssincetheywereconvertedintoFe0.96SandFe3S4duringtheHDSreactions.Incontrast,theFeP/Al2O3wasfoundtobestableandactivefortheHDSreactions.Inparticular,FeP/Al2O3possessedsignificantlysmallerFePparticlesthanFeP/C,leadingtothesignificanthigherHDSactivityofFeP/Al2O3thanFeP/C.

简介：那为什么魏征没有怕呢,自己做皇帝,《英雄》这部电视中的魏忠贤是明僖宗时的一个大贪官

简介：　　　　四、即兴伴奏的基础　　　　1.熟悉各调　　比如,①因此要想弹好即兴伴奏,即兴伴奏不可能像经典伴奏那样

简介：也暗通于克莱斯特关于艺术之,意思就是要冥合天人、物我、内外,由克莱斯特所预言的现代艺术