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简介：Asanimportantstartingpointforpromotingnew-typeurbanizationandanimportantplatformforadvancingsupply-sidestructuralreform,characteristictownshavegainedstrongsupportatthenationalpolicylevelandhavebeenrapidlypromotedinpractice.However,ontheacademicresearchlevel,theresearchofcharacteristictownsislackofsystematic.Underthesecircumstances,thisarticlesummarizesthecurrentresearchonthecharacteristictowninourcountry,andmakesrelevantresearchandevaluation,withaviewtoprovidingreferenceandbasisforfurtherresearchonthecharacteristictown.

简介：Withthedevelopmentoftheelectroniccommerce,theelectronicword-of-mouth(eWOM)hasbecomeimportantreferenceinformationforconsumershopping.EWOMhasattractedconsiderableinterestfromresearchersinthepastdecade.Inthispaper,aresearchreviewisconductedandanintegratedframeworkisproposedontheeffectofeWOM.TheeffectofeWOMareinfluencedbyitscharacteristics,communicators,andotherfactors.ThecharacteristicsofeWOMincludethesource,thevolumeandthevalence.ThecommunicatorsofeWOMrefertothesender,thereceiverandtherelationshipbetweenthem.Inaddition,dispersionandconsistency,persistenceandobservability,anonymityanddeception,andcommunityengagementarerelatedfactorsfortheeffectofeWOM.

简介：BackgroundNoncompactionofventricularmyocardium(NVM)isararetypeofprimarycardiomyopathy.Thediseaseiscausedbythedisorderinthedensificationofthemyocardiumintheearlystageoftheembryoprocess.Themorphologicalcharacteristicsareprojectingtrabeculationintheventricleandthedeeptrabecularspaceinterlinkedwithventricularchamber.Inrecentyears,manystudieshavefoundthattheleftventriculargrowthassociatedgeneticmutationiscloselyrelatedtotheoccurrenceofNVM.Themostclinicalmanifestationssuchasheartfailure,thromboembolismandarrhythmiaarespecific.EchocardiographyisthemostcommonlyusedtechniqueforthediagnosisofNVM.Cardiaccomputedtomography(CT)scan,cardiacmagneticresonanceimagingandleftventricularangiographyareotherimportanttechniquesforitsdiagnosis.TheNVMpatientshavealongcourseofdisease,poorprognosisandahighrateofmisdiagnosis.Thisarticlereviewstheresearchprogressintheaspectsofepidemiologicalcharacteristics,geneticcharacteristics,clinicalmanifestations,pathophysiology,diagnosis,treatmentandsoon,inordertoprovidethebasisforthediagnosisandtreatmentofNVM.

简介：文章首先从理论上总结了洛必达法则如何求“0/0”型的未定式的极限,然后通过具体例题予以说明,以期使读者加深对洛必达法则的理解,进而达到可以灵活运用洛必达法则的目的。

简介：那些雷早于他们出生他们熟悉蚱蜢、蝴蝶、蟋蟀这些在大地上生大地上长的昆虫他们能掌控雷霆、穿越火线、神龙战士那些虚拟世界里的规则和英雄今天，他们要触摸这些铁、火药和引信——这些战争的遗孤、一触即发的危险嵌在大地深处的伤和痛

简介：《中学生数学》2016年1月下初一年级课外练习题第2（1）题为：设a^2-a＋1=0,求a^（2016）＋1/a^（2016）的值.评析我们知道,关于x的一元二次方程ax^2＋bx＋c=0（a≠0）,当Δ=b^2-4ac≥0时,方程有实根;当Δ=b^2-4ac〈0时,方程无实根.上述题目中,对于a^2-a＋1=0而言,由于Δ=（-1）^2-4×1×1=-3〈0,

简介：UNAVCOsupportsgeoscienceresearchat113USacademicMemberinstitutions,andanother104AssociateMemberinstitutionsincludeinternationaluniversities,laboratories,observatories,academiesofscience,andamuseum.ThisdiversemembershipsharesUNAVCO’spurposeathomeandabroad,givingUNAVCOglobalreachinadvancinggeodesy.Sincethemid-1980s,moderngeodesyhasevolvedintoacutting-edge,multi-facetedtoolboxwithremarkablydiverseresearchandreal-worldapplications,includingstudiesandobservationorforecastingofsolid-Earthhazards,thedynamicsoftheatmosphere,climate,near-Earthspaceenvironment,andofkeyenvironmentalparameterssuchaswaterstorage,soilmoisture,andseaandlake-levelchanges.UNAVCOoperatesfacilitiesonbehalfoftheU.S.NationalScienceFoundationtosupportinvestigatorswhousegeodetictoolsacrossalloftheseEarthandatmosphericdomains.UNAVCOhasbuiltanumberoflargedenseregionalnetworksofGPSstations,includingtheEarthScopePlateBoundaryObservatoryinNorthAmerica,theCOCONetCaribbeannetwork,TLALOCNetinMexico,GNETinGreenland,andANETinAntarctica.Goingforward,UNAVCOplanstofederatethePlateBoundaryObservatory(USA),TLALOCNet(Mexico),andCOCONet(Caribbean)GPSnetworksastheNetworkoftheAmericas,withupgradestostate-of-the-art,multi-sensor,multi-GNSSobservations.WhileUNAVCOcommunityscientistsactivelyengageinusingspaceandterrestrialgeodetictechniquestostudygeodynamicsatallscales,thisproliferationofcontinuousnetworksisthebasisforasuiteofrecentcontributionsthatfocusonimproveddailypositioningtosenseEarth’selasticresponseandotherperturbationstoloadingbyatmosphericandsurfacewater,oceans,andice.Day-to-dayandsub-dailyvariationsintheGPSverticalandhorizontalcorrelatetoincreasinglywell-understoodshort-termmassvariability,suchasmonsoonalfloodinginBangladesh,sub-dailychangesintidalloadingatcontinentscales,day-to-daysurfacewaterandicestorageinthewesternU.S

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简介：BackgroundMyocardialfibrosisisoneprocessofthevariousheartdiseases,whichleadstocommonpathologicalchangeswhenitdevelopstoacertainstage.Itisthemaincauseofventricularremodelingwhicheventuallyleadstodifferentdegreesofcardiacdysfunction,malignantarrhythmiasandsuddencardiacdeath.Manystudieshaveshownthatvariouscytokinesplayaveryimportantroleinthedevelopmentofmyocardialfibrosis.Thispaperreviewsthelatestresearchesontheroleofcytokinesinmyocardialfibrosis.

简介：ThisworkpresentsabriefintroductiononthreekindsofnewlydevelopedNd3＋-dopedlaserglassesinShanghaiInstituteofOpticsandFineMechanics（SIOM）,China.TwoNd3＋-dopedphosphateglasseswithlowerthermalexpansioncoefficientandthermalshockresistance4timeshigherthanthatofN31glassaredevelopedforlaserprocessing.Nd：SilicateandNd：Aluminateglasseswithpeakemissionwavelengthat1061and1065nm,effectiveemissionbandwidthof34and50nm,respectively,aredevelopedforExawatt-classlasersystemapplication.Fluorophosphateglasseswithlownonlinearrefractiveindex（n2=0.6-0.86）andlongfluorescencelifetime（430-510μs）areinvestigatedforthepurposeofdecreasingBintegralinhigh-powerlasersystem.Thepropertiesofalltheseglassesarepresentedandcomparedwiththoseofcommercialneodymiumlaserglasses.

简介：StudiesontherightsofpersonswithdisabilitiesaretypicalofmultidisciplinaryresearchInrecentyears,followingtheadoptionoftheConventionontheRightsofPersonswithDisabilitiesinparticular,studiesoftherightsofthedisabledhavepresentedthefollowingtrendsandfeatures:diverseresearchangles,theexpandingofthedepthandwidthofresearch;afocusonpersonalexperienceandculturalinterpretation;aconcernfortheimpactsofmultipleidentitiesontherealizationofindividualrights;andastressonempirical,participatoryandemancipatoryresearchMultidisciplinarydisabilityrightresearchisnowatapreliminarystageanditisworthfurtherdevelopmentsoastopromotethedisabilitycauseinChina

简介：加快的生活步伐以及全球最具价值创业公司。美国一些伟大的实业家在匹兹堡建立了产业帝国，包括钢铁大王安德鲁·卡内基。如今这座城市又吸引了另一位有抱负的强盗资本家（特拉维斯·卡拉尼克）的注意力。去年，叫车服务公司优步一头扎进卡内基·梅隆大学的机器人技术研发中心，寻求自动驾驶汽车的专业技术。

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简介：ThedatarecordedduringthesitesurveyintheZhangzhouareainFujianProvincebetweenOctober23,2007andDecember3,2007wasanalyzed.Themainmethodsadoptedforthenoiselevelofthisareaarethenoiserootmeansquare(RMS),noisepowerspectrumdensityandnoisecoherencyfunction.Theresultsindicatethatthenoiselevelsofthesurveysitesarehigherinthe1s-10speriods,whichisthemainfrequencybandofpreliminarymicroseism,andalso,twomainnoisesourceswerefoundin1.5Hzandaround5Hz.Accordingtoarithmetic,thedirectionandfrequencybandofthenoisesourcewereanalyzedandacademicproofswerepresented.Atlast,wefoundthatthenoisesourcein1.5Hzwasmadebythewaterwavearousedbythewindinthereservoirregionandthenoisesourcearound5Hzwasmadebythepowerstationinthenortheastdirection

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简介：Combinedwiththeanalysisofcharacteristicsofthecommunicationindustryandthesustainabledevelopmentrequirementsoftheenterprise,consideringthecurrentandthelong-termdevelopmentandtheexternalstakeholderinterestoftheenterprise,thesustainabledevelopmentindexsystemoftelecomoperatorwasconstructedincludingoperationmanagementability,innovationdevelopmentabilityandstrategyleadingability.Takingatelecomoperatoranditssubsidiaryasanexample,theindexsystemwasdesignedandthedesignelementsandassessmentrequirementswerealsopresentedclearly.Theevaluationandanalysisoftheindexcanhelpenterpriseseffectivelyidentifythekeyshortcomingsofsustainabledevelopment,andbetterimprovethesustainabledevelopmentability.