学科分类
/ 25
500 个结果
  • 简介:ThispaperpresentsthelimitingexpressionforthegencalizedinverseAT.S(2)anditscorresgondingprojectorsSincecomononimnortorsinverses,suchasandAT.S(2)etcareallgeneralizedineeAT.S(2)Infact,wegiveaunifiedlimitingformulaofcomputinesuchimporiantgeneralinedinversesanditscorrespondingproiectors,BasedonthisweestalishandimbedlingmethodfirecompotingthegeneralizedinverseAT.S(2)Theresultsextendearlierworkbyvariousauthors.

  • 标签: LIMITING EXPRESSION generalized mverse A t.s(2)
  • 简介:在这篇论文,我们考虑Markov进程(X~∈(t),Z~∈(t))相应于有小参数∈的一个微弱地联合的椭圆形的PDE系统>0。我们首先证明那(X~∈(t),Z~∈(t))由联合方法有Feller连续性,然后证明那(X~∈(t),Z~∈t))由收养的Lyapunov不平等有不变的措施μ~∈(·)。最后,当小参数∈趋于到零,我们为μ~∈(·)建立一个大偏差原则。

  • 标签: MARKOV过程 不变量测量 椭圆PED系统 连贯性 Foster-Lyapunov不等式
  • 简介:AftertheDatong-Yanggaoearthquake(October1989),aspecialteamwasorganizedforthefirsttimebytheSSBofChinatostarttheworkofearthquakedamageevaluationforthepurposeofprovidingthegovernmentwithascientificbasisfordisasterrelief.Theresultoftheevaluationplayedanimportantroleinspeedinguprehabilitationandreducingdamagelossesintheearthquakearea.BasedontheevaluationofearthquakedamagefromtheDatong-Yanggaoearthquakeandrecentresearchresults,thispaperpresentsamethodforquickevaluationofearthquakedamages,introducessoftwareentitledEDEP(earthquakedamageevaluationprogram)forevaluatingearthquakedamage,andcitesacasetoexplainthemainfunctionandapplicationoftheEDEP.Finally,foraquickerevaluationofearthquakedamages,thepaperalsoproposestheestablishmentofdatabasesystemsofearthquakedamageevaluationintheemphaticallymonitoredareasandwaystobuildupsuchdatabasesystems.

  • 标签: Earthquake DISASTER assessment DISASTER RELIEF COUNTERMEASURES
  • 简介:Ⅰ.HistoryoftheRelationshipandItsCurrentSituation.TheSino-LatinAmericanrelationshiphasalong-standinghistorythatstartsfromthetradeexchangesinthemiddleofthe16thcentury.Fromthe18thcenturytotheearly19thcentury,hundredsandthousandsofChineselaborerswereseizedandsoldbythewesterncoloniststoLatinAmericaas"coolies"whomadecontributiontothelocaleconomicdevelopmentthere.

  • 标签:
  • 简介:Thehandicapped,aspecialgroupinsociety,usuallyencountermanydifficultiesinemploy-ment,marriage,anddailylife.Somedifficultiesarewhattheycannotconquerbythemselves.Itisalsonoteasyforthemtointegrateintosociety.Howev-er,ifthereisapersonwhohelpsthehand-icappedfindajob,buildupconfidenceandmaketheirlifeworth;ifthereisapersonwhohelpsthemsetuptheirfamiliesandincorporateinaharmoniouscommunity;andifthereisapersonwhotakescareofthechildrenwithdisabilitiesjustastheirowns;hownoblethispersonis!

  • 标签: 生命价值 残疾人 人权问题 中国
  • 简介:Withtheaimtothequantificationofanomalyidentificationandextractionforobservedoranalyzedrecords,wepresenttwostatisticalmethodsofearthquakecorrespondingrelevancyspectrum(ECRS)andslidingmeanrelevancy(SMR).WithECRSmethod,wecanobtaintheabnormalconfidenceattributeofdataindifferentvalueranges.Basedontherelevancyspectrumindifferentstudiedtime-intervals,weconverttheoriginaltimesequenceintorelevancytimesequence,andcanobtaintheSMRtimeseriesbyusingthemulti-pointcumulativeslidingmeanmethod.Thenwecanidentifytheseismicprecursoranomaly.Wetestthismethodbytakingthetimesequenceofη-valueinthenorthernTianshanregionasoriginaldata.Theresultshowsthatwhenthestudiedtime-intervalis18months,theprecursoranomalycanbeidentifiedbetterfromslidingmeanrelevancy.Theanomalycorrespondingrateis83percent,theearthquakecorrespondingrateis86percent,andtheanomalyischaracteristicofthemiddleterm.Totrytheresearchonmulti-parametercomprehensiveapplication,wetaketheKalpintectonicblockinXinjiangasourstudiedregion,andanalyzethespatialandtemporalabnormalcharactersofmulti-parameterslidingextreme-valuerelevancy(MSER)beforemid-strongearthquakesintheKalpinblock.TheresultindicatesthatECRSandSMRsequenceindifferenttime-intervalscannotonlybeusedtoidentifytheprecursoranomalyofsingle-itemdata,butalsoofferthedataofquantitativesingle-itemanomalyforcomprehensiveearthquakeanalysisandprediction.

  • 标签: 前兆异常 相关谱 地震 基础
  • 简介:为从经由1,3-dimethylbenzimidazolium盐的相应的羧基的酸的脂肪族的醛的准备的一个新奇合成方法被提供。1,3-Dimethylbenzimidazolium盐很快与钠/乙醇然后hydrolyzed被减少与盐酸获得脂肪族的醛,1,3-dimethylbenzimidazolium在腌的酸能乐意地从相应的羧基的酸被完成。为有钠/乙醇的1,3-dimethylbenzimidazolium盐的减少的反应的机制被讨论。

  • 标签: 脂肪族醛 合成方法 羧酸 制备 盐酸水解 反应机理
  • 简介:Aconvenient,environmentallybenign,andhighlyefficientprotocolforthepreparationofN-aryl-hydroxylaminesfromthecorrespondingnitroarenesinaZn/HCOONH4/CH3CNsystemunderultrasoundisdescribed.Theadvantagesofthepresentmethodincludehighchemoselectivity,simpleandpracticalwork-upprocedureandhighyield.

  • 标签: 超声波 化学选择性 环境友好 议定书
  • 简介:Theaimofthispaperistostudythepracticalф0-stabilityinprobability(Pф0SiP)andpracticalф0-stabilityinpthmean(Pф0SpM)ofswitchedstochasticnonlinearsystems.Sufficientconditionsonsuchpracticalpropertiesareobtainedbyusingthecomparisonprincipleandthecone-valuedLyapunovfunctionmethods.Also,basedonanextendedcomparisonprinciple,aperturbationtheoryofswitchedstochasticsystemsisgiven.

  • 标签: 随机非线性系统 扰动理论 稳定性 切换 LYAPUNOV函数方法 充分条件
  • 简介:Rareattentionhasbeenpaidtothecomparisonbetweenamonomeranditscorrespondingpolymerintermsoftheoptoelectroniccharacteristics.Inthisarticle,amodelH-shapedmoleculeanditscorrespondingpolymer,bothofwhichexhibitedsimilarpropertiesincludingblueemissionandsolutionprocessing,weredesignedandsynthesized.Optoelectronicpropertiesandvariouskindsofstabilityfeatures,includingthethermostabilities,spectralstabilitiesandamplifiedspontaneousemissioncharacteristicofthemonomerandpolymerwereinvestigated.Ingeneral,thecorrespondingpolymerPHexhibitedsimilaroptoelectronicpropertiesbutdeterioratedstabilitiescomparedwithitsH-shapedmonomerH-1probablyowingtothesimilarchemicalstructurebutthewidermolecularweightdistributionandmetalcatalystresidue.Importantly,monomerH-1displayedacomparableASEthresholdvaluewithitspolymerPH,suggestingthatH-shapedfluorene-basedsmallmoleculesmaybemorepromisingopticalgainmediainsolidstateamplifersandlasers.

  • 标签: FLUORENE H-SHAPE Stability OPTOELECTRONIC materials
  • 简介:Thispaperproposesasufficientcondition,ifthepropertiesofthebilevelprogrammingsatisfiedthecondition,wecansolvethebilevelprogrammingbysolvingsinglelevelprogramming.Itbecomeseasyandsimpletosolvethebilevelprogramming.

  • 标签: 二值编程 堆栈判定 充分条件 单级线性编程
  • 简介:ObjectiveTostudytheinfluenceofJiangTangFangLongformulaoninsulinproductionandfunctioninananimalmodelofdiabetichearingloss.MethodsWistarrats(n=60)wererandomlydividedinto6groups(10ineach)toreceivenotreatment(thenormalcontrol,GroupA),ortoreceiveintra-peritoneal55mg/kgstreptozotocinwith(GroupsC,DandE)orwithout(GroupB)subsequentJiangTangFangLongformulatreatmentatvariousdosesorYuLongWantreatment(GroupF).After60days,fastingbloodglucose(FBG),bodyweight(BW)andfastinginsulin(FINS)wererecordedandtheHOMA-IRandHOMA-βcalcu-lated.Insulinexpressioninpancreatictissueswasmeasuredbyradioimmunoassay.ResultsComparedwithanimalsthatreceivedstreptozotocinwithoutrescuetreatment(GroupB),animalsthatreceivedhigherdosesofJiangTangFangLongformula(GroupsDandE)showedimprovedindicesofdiabetesmanifestation(P<0.05)andimprovedHOMA-β(P<0.05)inadose-dependentmanner,aswellasimprovedinsulinexpressioninpancreaticislets(P<0.05).ThedifferencebetweenlowdoseJiangTangFangLongformulatreatment(GroupC)andGroupBwasnotsignificant(P>0.05).ConclusionOurresultssuggestthatJiangTangFangLongformulamayimprovepancreaticβ-cellsfunctionwhichmayexplainitsefficacyintreatingdiabetichearingloss.

  • 标签:
  • 简介:ObjectiveTostudytheefficacyandsafetyoftheJiangTangFangLongJiaoNang(HypoglycemicAnti-DeafnessCapsule)intreatingnon-insulindependentdiabetesmellituswithhearingloss.MethodsTwohundredninetysixpatientswithnon-insulindependentdiabetesmellitusandhearinglosswererandomlyassignedtoatreatmentgroup(n=164,208ears)andacontrolgroup(n=132,184ears).PatientsinthetreatmentgroupweretreatedwiththeJiangTangFangLongJiaoNangandsupplementherbalpreparationsasindicatedbytraditionalChinesemedicinedialecticalassessment,whilecontrolpatientsreceivedglibenclamideandconventionaltreatmentsfordeafness.Hearing,fastingbloodglucose(FBG),post-prandialbloodglucose(PBG),24hoururinesugar,plateletfunctionindices,bloodsuperoxidedismutase(SOD)andlipidperoxides(LPO)levels,andsymptomimprovementwerecomparedbetweenthetwogroups.ResultsTherateofhearingimprovementwas56.7%forthetreatmentgroupand26.6%forthecontrol.FBG,PBGand24hoururinesugarimprovedinbothgroups,butthelasttwoweresuperiorinthetreatmentgroupcomparedtothecontrol.Symptomsimprovementwasalsosuperiorinthetreatmentgroupcomparedtothecontrol.InpatientsreceivingJiangTangFangLongJiaoNangtreatment,plateletfunctionindices,SODandLPOwereallimproved,whileonlyLOPimprovementwasnoticedincontrolpatients.Noacuteorlong-termtoxicitywasdemonstratedfortheJiangTangFangLongJiaoNanginanimaltests.TheJiangTangFangLongJiaoNangloweredbloodglucoseandserumtriglyceridesinaratmodelofalloxan-induceddiabetes.ConclusionTheJiangTangFangLongJiaoNangiseffectiveinimprovinghearinganddiabeticindicesindiabeticpatientswithdeafness,withoutsignificantsideeffects.

  • 标签: