简介：摘要本文利用Intervention-ARIMA模型对河北省FDI（外商直接投资额）(1994-2009年)时间序列进行了动态拟合，重点考虑了1997年中期爆发的亚洲金融危机对河北省FDI的干预影响，取得了较好的拟合效果，并预测了河北省未来几年的招商引资情况的发展趋势。通过分析得出未来几年河北省的引资状况发展良好，而如何有效的利用则成为不容回避的问题。

简介：Naturalmonopoly,becauseofitsspontaneousornaturalcharacteristics,mosthavesomemysteriouscausesofreasonableness.Thus,theregulationstoitsefficiencylosswouldhaveadifferentwaycomparedtoothermonopolies.Thatthecharacteristicsofnaturalmonopoly,inthecaseofwaterindustry,arethattheinfrastructureinvestmentsareverylarge,mostofwhichareusedtobuildthetransportationsystem?Thewebsfortransportingtheirproductstotheircustomers,andtheproductsareidentitygoodsorservices.Byexaminingthecharacteristicsofnaturalmonopoly,thispaperproposedawaytobreakupandremodeltheindustryof""""""""naturalmonopoly'.Themainclueofremodelingisthatthegovemments,whorepresentthepublicandwhohavethepowertocontroloverpublicresources,shouldbuildandmaintainapublicwebplatformforthegoods'transportationuses,andbreakupthebarrieroftheentrysoastoproduceamarket-orientedcompetitivestructure,Therunningmodelandtheconditionofremodelingareputforwardandthecost-revenueanalysisoftheoperationisbrieflyunderconsideration.

简介：TheProgramofCocinasComunitariasinthestateofOaxaca,Mexicobenefitschildrenaged6to12whoattendprimaryeducationschoolsinlow-incomemunicipalities.Itishopedthatthisfoodassistanceprogramwillallowchildrentolearnbetteranddeveloplearningskills.Inthisway,asignificantreductioninthegradefailureratesanddropoutratesisexpected,whichwillbereflectedinahighergraduationefficiencyrates.Infact,thecontributionofthisworkconsistsofamethodologyfortheanalysisoftheimpactofthefoodsubsidyontheacademicperformanceoflow-incomeprimaryeducationstudents.Inthissense,amultivariatemodelwasconstructedtoanalyzetheinterrelationshipsbetweengradefailure,dropout,graduationefficiencyrates,foodsubsidy,andthesocio-demographiccharacteristicsofthepopulationthatattendsprimaryeducation.TheMexicangovernmentexpectsfromthisprogramthatthemorelow-incomechildrencompleteprimaryeducation,themorelikelythatahighernumberofadolescentswillcompletehighschooleducation.Thisschemeisveryimportantforthecountry’shalfpopulationlivinginpovertyandespeciallyinOaxacaStatewhichisoneofpooreststates.