简介:Theacademiccirclesholdageneralviewthattherurallaborshortagebringsoutsomepositiveeffects.Thispaperanalyzesthepositiveeffectsintherealitybymeansofempiricalstudy,andanalyzesthecausewhythepositiveeffectsisdifficulttocometrueeffectively.Atpresent,rurallaborshortagecannotimprovetheruralmigrantworker'swagesandwelfareradically,cannotachievetheindustrialupgradingeffectively.Thepositiveeffectsoftherurallaborshortagewouldundergoakindofslowanddifficultprocess;thegovernmentshouldestablishandimprovetheguidanceandtheregulativemechanismtostimulatethepositiveeffectsoftherurallaborshortage.
简介:Inthispaper,weestablisharesultofLeray-Schauderdegreeontheorderintervalwhichisinducedbyapairofstrictloweranduppersolutionsforasystemofsecond-orderordinarydifferentialequations.Asapplications,weprovetheglobalexistenceofpositivesolutionsforamulti-parametersystemofsecond-orderordinarydifferentialequationswithrespecttoparameters.ThediscussionisbasedontheresultofLeraySchauderdegreeontheorderintervalandthefixedpointindextheoryincones.