简介:Thisarticleexplorespopulationlong-termbalanceddevelopmentfornationaldefenseaccordingtothestrategicgoalssetatthe18thNationalCongressoftheCommunistPartyofChina.Threemajorissuesarediscussed.Firstly,theconceptandconnotationofthelong-termequilibriumdevelopmentofnationaldefensepopulationaredefined,inwhichpopulationlong-termequilibriumisequaltopopulation'longtermsafety'includingqualitybalance,quantitybalanceandpopulationstructureequilibrium.And'quantityequilibrium'needstobeconsideredinbothabsoluteandrelativeterms.Secondly,the'non-equilibrium'situationofnationaldefensepopulationisexaminedfromtheperspectiveofqualityandquantity.Thirdly,policysuggestionsinpromotingthenationaldefensepopulationequilibriumareproposedwithregardtopopulationregulation,humanresourcedevelopmentandsocialsecurity.
简介:Thispaperinvestigatesaclassofevenorderfunctionaldifferentialequationswithdampedterm,andderivestwonewoscillatorycriteriaofsolution.
简介:LongtimebehaviorofdegenerateequationswiththenonlinearityofpolynomialgrowthofarbitraryorderonthewholespaceRNisconsidered.Byusing-trajectoriesmethods,weprovedthatweaksolutionsgeneratedbydegenerateequationspossessan(L2U(RN),L2loc(RN))-globalattractor.Moreover,theupperboundsoftheKolmogorovε-entropyforsuchglobalattractorarealsoobtained.
简介:AIM:Todeterminethelong-termeffectsofselectivelasertrabeculoplasty(SLT)onintraocularpressure(IOP)andthenumberofmedicationsusedupto5yfollowingtreatmentinglaucomapatientsreceivingmaximallytoleratedmedicaltherapy(MTMT).·METHODS:TheWillsEyeHospitalGlaucomaResearchCenterretrospectivelyreviewedthechartsofglaucomapatientswhounderwentSLTafterreceivingMTMT.Eyesthatdidnotachievetheirtargetpressurewithin3mofollowingSLTwereexcludedfromthestudy.ChangesinmeanIOPandnumberofglaucomamedicationsusedwereanalyzedat1,3,and5yfollowingSLT.·RESULTS:Seventy-fiveeyesof67patientswereincludedinthestudy.FifteeneyesthatreceivedSLTfailedtoachievetheirtargetpressurewithin3moandwereexcludedfromthestudy.Theaveragefollow-uptimewas37.4mo(±14.4).MeanIOPwassignificantlyreduced1yaftertreatment(P=0.005).Itwasalsoreduced3,5yaftertreatmentwithoutreachingstatisticalsignificance(P=0.20andP=0.072,respectively).Therewasasignificantdecreaseinmeannumberofmedicationsused1,3,5yaftertreatment(P<0.001,P<0.001,andP=0.039,respectively).Inthespanof5y,2eyes(2.7%)underwentrepeatSLT,7eyes(9.3%)underwentglaucomasurgeryandanadditional3eyes(4.0%)underwentboth.·CONCLUSION:SLTsignificantlyreducedthenumberofglaucomamedicationsused5yfollowingtreatmentinglaucomapatientsreceivingMTMT.SLTmaydelayoperating-roomsurgery.
简介:有弹性的阻抗(EI)倒置广泛地在工业被使用了估计有点有弹性的参数区分岩性学或甚至液体。然而,常规三术语的有弹性的阻抗公式甚至与在地震数据的细微随机的噪音是不稳定的,这被发现,由于有弹性的参数的性恶的系数矩阵。我们介绍了二术语的Fatti有弹性的阻抗倒置方法,它比常规三术语的有弹性的阻抗倒置更柔韧、精确。在我们的方法,密度被忽略增加倒置矩阵的坚韧性。而且,P阻抗和S阻抗,对随机的噪音不太敏感,被转换而不是VP和V在常规三术语的有弹性的阻抗的S。使倒置更稳定,我们把K价值的范围定义为限制。这个方法能获得答应的合成测试主张与低SNR(信号噪音比率)结果地震数据。用在一个2D线数据的方法的申请,我们完成了,并且VP/VS节,完美地匹配钻的井,在水库预言显示方法的潜力。
简介:AIM:Toevaluatethelongtermclinicalresultsofmechanicalno-alcohol-assistedlaserepithelialkeratomileusis(LASEK)versusstandardphotorefractivekeratectomy(PRK)forlow-moderatemyopia.METHODS:Twenty-fiveeyestreatedwithLASEKandtwenty-fiveeyestreatedwithPRKwereevaluatedwithameanfollow-updurationof60mo.Mechanicalseparationoftheepitheliumwasperformedwithbluntspatulaandwithoutapplicationofalcohol.LaserablationwasperformedwiththeMEL-70excimerlaser.Allpatientswereexamineddailyuntilepithelialclosure;at1,3,6,and12mo,andeveryyearsubsequently.Mainoutcomemeasureswereuncorrecteddistancevisualacuity(UDVA),correcteddistancevisualacuity(CDVA),manifestrefraction,haze,efficacyandsafetyindexes.RESULTS:Twenty-oneeyesand22eyescompletedfollow-upof60moinLASEKandPRKgrouprespectively.Manifestrefractionat60mofollow-upwas-0.01and0.26inLASEKandPRKgrouprespectively.IntheLASEKgroupmeanUDVAandmeanCDVAafter60mowere20/22and20/20respectively(P>0.01).InthePRKgroupmeanUDVAandmeanCDVAat60mofollow-upwere20/20and20/20after60mo(P>0.01).Theefficacyindexeswere0.87and0.95,andthesafetyindexeswere1.25and1.4respectivelyforLASEKgroupandPRKgroup.CONCLUSION:BothstandardPRKandno-alcoholLASEKoffersafeandeffectivecorrectionoflow-moderatemyopiainthelongtermwithoutanystatisticallysignificantdifferencebetweenthetwogroups.
简介:Thecomplexityoftheloadsactingontheoffshorewindturbines(OWTs)structuresandthesignificanceofinvestigationonstructuredynamicsareexplained.Testresultsobtainedfromascaledwindturbinemodelarealsosummarized.Themodelissupportedonmonopile,subjectedtodifferenttypesofdynamicloadingusinganinnovativeoutofbalancemasssystemtoapplycyclic/dynamicloads.Thetestresultsshowthenaturalfrequencyofthewindturbinestructureincreaseswiththenumberofcycles,butwithareducedrateofincreasewiththeaccumulationofsoilstrainlevel.Thechangeisfoundtobedependentontheshearstrainlevelinthesoilnexttothepilewhichmatcheswiththeexpectationsfromtheelementtestsofthesoil.Thetestresultswereplottedinanon-dimensionalmannerinordertobescaledtopredicttheprototypeconsequencesusingelementtestsofasoilusingresonantcolumnapparatus.
简介:我们为f(T)严肃理论在宇宙论的限制的精确上探索SandageLoeb(SL)测试的影响。因为它在远类星体的系列在Lyman-森林里测量redshift飘移,SL测试是对当前的宇宙论的观察的重要补充,盖住2z的redshift沙漠5。避免数据矛盾,当模仿30的基准的模型嘲笑SL测试数据,我们基于当前的联合观察数据使用最好合适的模型。我们确定为f(T)严肃理论的参数评价上的这些SL测试数据的影响。二个典型f(T)模型被考虑,幂定律模型f(T)PL和指数形式的模型f(T)终止。结果证明SL测试罐头有效地打破存在在在另外的宇宙论的观察的今日的事密度m和小瘤常数H0之间的强壮的退化。为考虑f(T)模型,SL测试的30年的观察能极其改进m和H0的限制精确,但是不能有效地改进模型参数的限制精确。
简介:OBJECTIVE:Tosystematicallyevaluatethelong-termeffectandsafetyofXingnaoKaiqiaoneedlingmethodinischemicstroketreatment.DATARETRIEVAL:Weretrievedrelevantrandomandsemi-randomcontrolledtrialsthatusedtheXingnaoKaiqiaoneedlingmethodtotreatischemicstrokecomparedwithvariouscontroltreatmentssuchasconventionaldrugsorotheracupuncturetherapies.SearcheddatabasesincludedChinaNationalKnowledgeInfrastructure,WeipuInformationResourcesSystem,WanfangMedicalDataSystem,ChineseBiomedicalLiteratureDatabase,CochraneLibrary,andPubMed,fromMay2006toJuly2014.SELECTIONCRITERIA:Twoauthorsindependentlyconductedliteraturescreening,qualityevaluation,anddataextraction.ThequalityofarticleswasevaluatedaccordingtotheCochraneReviewers’Handbook5.1,andthestudywascarriedoutusingCochranesystemassessmentmethods.RevMan5.2wasusedformeta-analysisoftheincludedstudies.MAINOUTCOMEMEASURES:Mortalityrate,recurrencerate,anddisabilityratewereobserved.RESULTS:Ninerandomizedandsemi-randomizedcontrolledtrialstreating931casesofischemicstrokewereincludedinthisreview.Meta-analysisresultsshowedthattherewerenosignificantdifferencesinmortalityreduction(riskratio(RR)=0.58,95%confidenceinterval(CI):0.17–1.93,Z=0.89,P=0.37)orrecurrencerate(RR=0.55,95%CI:0.18–1.70,Z=1.04,P=0.30)ofischemicstrokepatientsbetweentheXingnaoKaiqiaoneedlingandcontroltreatmentgroups.However,theXingnaoKaiqiaoneedlingmethodhadatendencytowardshigherefficacyinmortalityreductionandrecurrencerates.TheXingnaoKaiqiaoneedlingmethodwassignificantlybetterthanthatofthecontroltreatmentinreducingdisabilityrate(RR=0.51,95%CI:0.27–0.98,Z=2.03,P<0.05).CONCLUSION:TheXingnaoKaiqiaoneedlingmethodhasabettereffectthancontroltreatmentinreducingdisabilityrate.Thelong-termeffectofXingnaoKaiqiaoneedlingagainstischemicstrokeisbetterthanthatofc
简介:UsingtheThreeRiversHeadwatersAreainChinaasapilotproject,thisstudyhasinvestigatedtheeffectivenessoftheecologicalcompensationpoliciesandpracticeshaveimplementedinthisareaoverthepastdecade.Majorissueshaveencounteredduringtheimplementationprocess,includingtheformidableextentofgrasslanddegradation,thecomprehensivenatureofmeasuresneededtorestoretheecosystem,andthetimeneededtoachievethesegoals.Theseissuesarediscussed,andremedialmeasuresproposed.Theyinclude:draftingregulationsgivingtheThreeRiversHeadwatersAreaecologicalprotection,settingasidefundsforecologicalcompensationandestablishinganationalpark,usinganecologicalassetsaccountingmethodologyforfinancialreportingpurposes,designingascience-basedapproachforconductingthelivestockhusbandrypopulationmigration,enhancingtheoversightcapacityforallaspectsoftheecologicalcompensationprocess,andmakinganoverallplantopromotetheharmoniousdevelopmentofthisareatogetherwithotherregionsinQinghaiProvince.
简介:BackgroundPrematureventricularcontractions(PVCs)arefrequentlyseeninchildren.However,therearelesssystematicandlongerfollowing-upstudiesexaminingtheprognosisofPVCsinchildren.TheaimofthisstudywastoevaluatethemediumtolongtermprognosisofPVCsinchildhoodandwhetherthereisadifferentialprognosisindifferentprimarydiseasesofPVCs.MethodsThisstudyreviewedthedataof106pediatricpatients(49F/57M,7.5±3.8years)seenattheAffiliatedHospitalofQingdaoUniversitywiththediagnosisofPVCsbetween1999and2005.Dataondemographics,clinicalpresentation,laboratorytests,andechocardiogramsofpatientswereextractedfromtheavailableclinicalrecords.ResultsAtotalof35(33.0%)childrenpresentedwithPVCsduetomyocarditis,7(6.6%)duetocardiomyopathies,7(6.6%)duetomitralvalveprolapse(MVP),10(9.4%)duetooperationforcongenitalheartdisease(O-CHD),16(15.2%)duetoleftventricularfalsetendons(LVFT),and31(29.2%)duetounknowncause.HolterdidnotshowPVCsduringfollow-upperiodin100%ofmyocarditispatients,57%ofcardiomyopathypatients,71%ofMVPpatients,60%ofO-CHDpatients,88%ofLVFTpatients,87%ofunknowncausepatients.ThePVCsdisappearedin93%ofpatientswhodidnotuseanti-arrhythmicdrugsandin76%ofpatientswhousedantiarrhythmicdrugs.Therewasnoasignificantdifferenceinprognosisbetweenmyocardialnutritioncombinedwithintravenousinjectionofimmunoglobulin(IVIG)groupandpropafenonegroup.ConclusionsPVCscausedbydifferentprimarydiseaseshasafavorableprognosisinchildren.Usually,thePVCswillreduceevendisappearduringfollow-up.ThepatientswithPVCsduetomyocarditisshouldbepreferredusemyocardialnutrientcombinedwithIVIG.