简介：运用平行面板数据的基本理论，对1996～2005年全国30个省市的地方财政科技投入与地方经济增长的关系进行实证分析，结果表明地方财政科技投入对地方经济发展的影响在各个地区及年份存在着很大的差异。

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简介：本文通过建立混合面板模型，对中国各省市金融发展状况和城乡收入差距进行分析。并将金融发展指标细化，从不同角度验证金融发展与城乡收入差距的关系。结果表明，金融发展规模和股票市场规模能够缩小城乡收入差距，而金融发展效率与之相反。在此基础上，我们结合实际情况，从金融发展角度出发，提出了缩小城乡收入差距的建议。

简介：在这篇文章，我们学习一个部分指定的空间面板数据的评价线性回归与随机效果。在外长的空间weighting矩阵和外长的regressors的条件下面，我们给一个仪器的可变评价。在某些足够的假设下面，我们证明为有限维的参数的建议评估者是一致、通常asymptotically分布式的root-N，为未知函数的建议评估者一致、asymptotically分布式。为两个的asymptotic变化协变性矩阵的一致评估者参量、未知的部件被提供。蒙特卡罗模拟结果验证我们的理论并且建议途径有某实际价值。

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简介：近年来中国蔬菜出口贸易在迅速发展的同时也存在着一系列的问题，主要表现为出口目的地国家的过度集中，文章选取2003—2006年中国蔬菜贸易出口相关数据，在paneldata基础上构建贸易引力模型来分析影响中国蔬菜出口的主要因素，并力图提出相应的对策和建议。

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简介：Thisarticleconsiders30provincesofChinaasthecross-sectionsubjects,andutilizesthedatasamplefrom2009to2015ofthesecross-sectionstoformulateaSpatialPanelDataDurbinModeltoanalyzetheeffectofenvironmentalregulationonemployment.Theresultindicatesthatenvironmentalregulationhasnegativeeffectonemploymentwiththeconsiderationofspatialspillovereffect,andthisadverseeffectisnotsignificantmathematically.Withtheenhanceofenvironmentalregulation,thenegativeimpactonemploymentwilldecreaseaccordingly,evenmayeventuallypromotejobgrowth,whichmeanstheremaybeanon-linearrelationshipbetweenthem.Specifically,thedirecteffectofenvironmentalregulationonemploymentindicatesthatitisbeneficialforjobgrowthwhereastheindirecteffectillustratethatitisdetrimentalforemployment.

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简介：Panel—Data下Granger因果检验的相关理论是最近几年才发展起来的，现有的研究提出了关于Panel—Data下Granger因果检验的四个基本假设：同质无因果关系假设（HNCH）、同质因果关系假设（HCH）、异质因果关系假设（HECH）以及异质无因果关系假设（HENCH），根据检验参数的特点给出三种类型的检验模型：固定系数模型、随机系数模型和混合固定随机系数模型。目前，还只有固定系数模型的相关理论较为完善，另外两种模型的检验还都存在一定的难度。因此，只有从理论研究和实际应用两个方面对该理论进行阐述，并对现有的理论进行简要的评述，才可指出其存在的不足及可能的改进方向。

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简介：Optimizedlandresourcesallocationisimportantforeconomicgrowthbecauselandisoneofthebasicelementsforeconomicdevelopment.AndurbanlandresourcesallocationhashadanincreasinglyimportantinfluencesincetheChinesesocialistmarketeconomysystemwasestablished.ThispaperestimatestheproductionfunctionofboththesecondaryandthetertiaryindustriesofChina's31provinces,autonomousregionsandmunicipalitiesdirectlyunderthecentralgovernmentthroughananalysisofthepaneldataofthetotaloutputvalueofthesecondaryandthetertiaryindustries,investedcapital,investedlaborforcesandthelandmarket-featuredmanagementoftheabove-mentionedregionsduringtheperiodof1999-2005,andexaminesthepositiveinfluenceoftheabove-mentionedfactorsonregionaleconomicoutput.Thisstudyconcludesthaturbaneconomicoutputispositivelyrelatedwiththelevelofurbanlandresourcesmarket-featuredmanagement,sincetherateofeconomicgrowthofthoseregionsapproximates14.7%undertheconditionofurbanlandmarketrunningduringtheperiodof1999-2005.

简介：20世纪30年代，世界计量经济学会创办的学术刊物Econometrica正式出版，标志着计量经济学为经济学研究注入了富于建设性的、形式严谨的逻辑思维。经济学作为一门以现实中的经济行为和现象为研究对象的社会科学，其理论分析框架和研究方法的普遍性、规范性和逻辑的一致性缺一不可；此外，所有的经济学理论最终都要接受现实的检验，而所有这些环节，都与计量分析密不可分。

简介：Researchingthedynamicdistributioncharacteristicsandtrendevolutionofagriculturalcarbonemissionsisofconsiderablesignificanceinformulatinganeffectiveagriculturalcarbonreductionpolicy.Basedonmeasurementofagriculturalcarbonemissionsof31provincesovertheperiod2002-2011,thestudyobservedregionaldifferencesandthedynamicevolutionofdistributionofagriculturalcarbonemissionsusingagriculturalcarbonintensityastheindicator,accompaniedbyGinicoefficientsandthekerneldensityestimationmethod.TheresultsdemonstratefirstthatagriculturalcarbonemissionsforChinashowanobviousnonequilibriumnatureinregardtospatialdistribution.Accordingtothedifferencesinagriculturalcarbonemissionsdynamictrends,wedividedthe31regionsintofourtypes-continuousdecline,fluctuatingdecline,continuousincrease,andfluctuatingincrease.Further,agriculturalcarbonemissionsintensityshowedadownwardtrendwithsignificantdifferencesintheresearchareas.Second,thegapinspatialdistributionofnationalagriculturalcarbonemissionsisgraduallyexpandingbasedontheresultscalculatedbyGinicoefficient.Fromtheperceptionofregionaldifferencesinagriculturalcarbonemissions,theeasternregionshowedanaveragelevel,thegapwasmoreobviousinthecentralregion,whilewesternregionshowedatrendoffluctuatingdownward.Third,accordingtoestimationbykerneldensity,theregionaldisparityinagriculturalcarbonemissionshadadownward,butlimited,trend.Inregardtoagriculturalcarbonemissionsoverthethreeareas,theregionalgapnotonlytendedtodecreasebutalsoshoweda"fourway"differentiationphenomenonintheeasternregion.Thedifferenceinthecentralregiondifferencewasnarrower.Onthewhole,thegapforthewesternregionreducedsteadilyoverasmallrange.

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简介：Anoveldischargedeviceisdesignedonthebasisoftheconfigurationofmicro-hollowcathodedischarge(MHCD).ByusingmanyMHCDsinparallelconnection,amicro-dischargearraycanbeconstructed.Withthemicro-dischargearray,ahigh-pressurehigh-currentdensityglowdischargeplasmascanbeformedtomakeaplasmadisplaypanel(PDP).Anairdischargeexperimentisfinishedwiththedischargedevice.Thestabledirectcurrentglowdischargeisformedunderthepressurefrom20Torrto500Torr.Thevoltage-currentcharacteristiccurveandthedischargephotographarenoted.Thevoltage-currentcharacteristiccurvehasapositivedifferentialresistancecoefficientonthewholedischargerange.Theestimatedcurrentdensityreaches70.1A/cm3,thepowerdensityis3.6×104W/cm3,andtheelectrondensityisintheorderof1013cm-3atp=200TorrandID=10mA.TheexperimentalresultsindicatethatthedesigneddischargedeviceisappropriateforPDP.

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简介：Theproductionofwood-basedpanelwaspresentedfirstlyinthispaper.SomefeaturesofChina’swood-basedpanelindustrywerereviewed,includingproductionbases,rawmaterialsandmainmarketsofwood-basedpanel.Inaddition,thetradeflowofwood-basedpanelwasdescribedintheend.