简介:China'smalemarriagesqueezeanditspotentialconsequencehaveattractedmuchattentionandgivenrisetodebate,butmoststudiescontributethissqueezetosexstructureandneglecttheagestructure,andsomestudiesuseflawedmethodtostudythecontributionofagestructureinthissqueeze.InthispaperwedevelopanindicatorofSpousalSexRatio(SSR)andapplyadecompositionmethodintoageandsexstructure.BasedonthedatafromChina's2010censusandprojection,wepredictthatfrom2010to2020,theagestructurewillbethedominantfactorforChina'smalemarriagesqueeze,andfrom2020to2034,thecontributionofsexstructurewillbeincreasing,whereasthatofagestructurewillbedecreasing.From2034to2045,China'smalemarriagesqueezewillmainlyfromimbalancedsexstructure,andtheagestructurewillcontributelittleornegativelytoChina'smalemarriagesqueeze.
简介:Thispaper,startingfromexaminingthecurrentsituationforthesocialinsuranceservicesystem,analysestheproblemsofthesystemandprovidesthreereformsuggestions.First,staffinglevelsofsocialinsuranceshouldbringaboutadynamicalratiomechanism,whichlinksstaffnumbertotheinsuredclientstoavoidworkoverloadorlowservicequality.Second,alloftheexpendituresoftheservicesystemshouldbeapartofsocialinsurancefundstocompletelyavoidbudgetshortage.Third,inordertodivideadministrationandservicemanagementandtoseparatesupervisionandoperationfunctions,anationalsocialinsuranceadministrationshouldbeinstituted,andaverticalsystemshouldbesetupwithagenciesatalllevels.Thesocialinsuranceservicesystemshouldbecharacterizedas'specialpublicinstitutions'.andreformingtheinstitutionswillpromotethedevelopmentofurbanization;lastly,lengtheningtheuseperiodsoffarmlandisgoodforthecoordinativedevelopmentofurbanizationforits'guaranteeeffect',butaperfectmechanismoflandtransfershouldbetakenforthepremise.
简介:AthalfpasteightonthemorningofMarch28,inabasementnearYabaoRoadinChaoyangDistrictofBeijing,Chen,65yearsold,wasgoingtocooksomecongeewiththecookertoeatwithhiswife.Thelandlinephonerangsuddenly.'Shifu,akidwasgoneintheemergencyroom.Pleasecome.''Howoldwasthekid?''Onlytwodaysago.Intestinalnecrosis.''Alas,toobad.I'llberightthere.'Chenwalkedoutofthebedroom,unpluggedthecooker,tookdownthewhitecoatfromthehangerandreturnedto
简介:摘要人脸识别是模式识别以及图像处理研究的重要内容和热点之一,也是生物特征识别技术中的一个非常活跃的课题。人脸识别技术具有实时、准确和非接触等优势,因而较容易被用户接受和认可,目前已经在出入管理、门禁考勤等系统中有着广泛的应用。本文主要研究基于Gabor小波变换与协同表示的人脸识别算法,就其中的特征提取等相关问题进行了深入探讨。首先用Gabor小波对人脸图像进行特征提取,由于变换后的特征维数较高,所以要对变换特征进行降维,本文结合协同表示的方法提出了一种新的基于Gabor特征与协同表示的人脸识别算法,实验结果表明该方法对于人脸图像的光照、表情和姿态等变化具备较强鲁棒性,算法运行速度较快。
简介:摘要BLACKSTAR电磁波随钻测量仪是美国NOV国民油井华高公司生产的EMWD(ElectromagneticMeasureWhileDrilling)仪器。该仪器既可以应用于普通的定向井、水平井施工,也可以应用于非常规领域的煤层气连通水平井、页岩气水平井、欠平衡水平井等普通MWD(MeasureWhileDrilling)仪器难以施工的领域。简述了BLACKSTAR电磁波随钻测量仪的工作原理。依据在墨西哥EPC油田多口井的实践经验,论述分析了在钻井生产中的应用情况和功能特点,着重指出了该仪器的缺点,并对其提出了改进建议。
简介:ReadingcarefullyofLiPingye’spaintingworkswithtigerbeingthemainthemeofcreation,onewillalwaysfeelastrongshockingforce.Thiskindoffeelingcomesfromtwoaspects.First,hisworksconveyrichhumanisticspiritconnotation.Second,Mr.LihasauniquestyleofartisticlanguageofoverbearingChineseinkpainting.Inthecircleof