简介:TheRelationshipbetweensexratioatage0to4andaltitudeinChinaisquantitativelyinvestigatedbyusingGeographicalInformationSystem(GIS)technologyinthispaper.Theresultsshowthatthecountieswithhighsexratioatage0to4in1990and2000aremainlydistributedontheeastofthewell-knownChinesepopulationdivision,Anhui-Tengchongline,andthereishighnegativecorrelationbetweensexratioatage0to4andaltitudeinChinesecounties.Therearehighestsexratioatage0to4intheregionsunder100meters,butthisratioover3200metersfallsintothenormalrange.Andthesexratioatage0to4continuestofalldownwhenthealtituderises.Sothegeographicalenvironmentevidentlyaffectsthesexratioatbirth.Thereishighersexratioatbirthinlower-altituderegions.Theeffectwithaltitudemaybeassociatedwiththeambienttempeture.
简介:AccordingtothenoticeissuedbythreedepartmentsincludingMinistryofHousingandUrban-RuralDevelopment,supportingthecompletionofrenovationdilapidatedhousesof4millionruralpoorhouseholdsareclassifiedasimplementationtasksofcentralgovernmentforexpandingthescaleofruraldilapidatedbuildingsrenovation.
简介:The4thGeneralConferenceofInternationalMicroSimulationAssociationwasheldfrom11to14December2013inCanberra,Australia.Dr.ZhangXuyingandDr.HuangKuangshi,researchersfromChinaPopulationandDevelopmentResearchCenter(CPDRC)attendedtheconferenceanddeliveredareportentitledPADISMicro-simulationModel