学科分类
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5 个结果
  • 简介:Theexistingbuildingenergy-savingrenovationprojectwithquasi-publicgoodsattributeshasinherentlydefinedthecharacteristicsofmarketexternalityandinformationasymmetry,leadingtotheexistingbuildingenergy-savingrenovationmarketfailure.Improvetheexistingbuildingenergy-savingmarketdevelopmentguaranteesystemisthefoundationofpromotingmarketcultivation,andhealthydevelopment,whichneedtoimprovethelegalsystem,richincentivepolicies,clearqualitystandardsandimplementenergyefficiencylabeling.

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  • 简介:我们学习二维的non-self-similar的一个家庭的单个结构quasilinear的全球解决方案和他们的相互作用夸张能量守恒定律。当起始的断绝在仅仅上发生时,为盒子,二拆散统一圆和起始的数据是二个不同经常的状态,全球答案被构造,一些新现象被发现。在分析,我们首先为0t构造答案T,在二个冲击波之间的另一个冲击波发生。最后,我们给答案的大时间行为什么时候t。这种技术不包含维的减小或并列转变。

  • 标签: 单个结构 quasilinear 夸张方程 基本波浪 全球答案
  • 简介:以生态的保存的瓷器投资,金融刺激和扣除在县水平被基于。因此,在县水平监视和对生态的保存的效果的评价是重要的在县规模为对生态、环境的质量的评价提供一个科学基础。这论文份量上在县水平在过去的15年,和他们与生态的保存节目的数字的关系估计了高质量的生态系统和植被范围的动力学被分析。然后,在县水平和他们的地区性的适用性的生态的变化上的生态的保存措施的效果被估计并且讨论。结果证明有比50%大的高质量的生态系统的一个百分比的县首先在东北中国,南部的副热带的中国和东南的Qinghai西藏高原被散布,并且那些比20%在西北的中国,西南的石灰岩地区常见的地形区域和北方中国平原主要是分布式的的与一个百分比降低。在最近的十年,生态的保存集中了于生态地易碎的区域;超过五个生态的保存节目在Qinghai省,东南的西藏,西方的四川,Qilian山,南部的Xinjiang和其它在三个河来源区域的大多数县被实现了西方的区域,当仅仅一或零在中国的东方沿海的区域被实现了时。在过去的15年,高质量的生态系统的比例的区域在约53%县增加了。在黄土高原,Huang-Huai-Hai平原,Beijing-Tianjin-Hebei(Jing-Jin-Ji),Sichuan-Guizhou-Chongqing,和Guangdong-Guangxi省水平的区域的县的植被范围显著地增加了。然而,它在北Xinjiang,中央西藏,中央、东方的内部蒙古,长江三角洲和另外的区域减少了。在生态的保存节目的数字和生态系统恢复反应的指示物之间的关系例如高质量的生态系统和植被范围,不显示出积极关联。这些结果建议生态的保存节目应该根据高质量的生态系统的分发模式被计划并且实现并且象造林那样的恢复措施应该在气候变化的背景下面跟随自然原则和地区性的区别。

  • 标签: 生态系统恢复 保存程序 地区性 适用性 中国 省水
  • 简介:Theuseofenergyconservationemissionreductionpoliciestopromoteindustrialrestructuringandupgradingandthusfacilitateenergyconservationandemissionreductionisoneofthe10importantstrategiesofenvironmentalmanagementinChina.TheuseofenergyconservationemissionreductionpoliciestopromoteindustrialrestructuringandupgradingandthusfacilitateenergyconservationandemissionreductionisoneoftheimportantstrategiesofenvironmentalmanagementinChina.Basedonthesystematiccollectionof1,195energyconservationemissionreductionpolicies,wediscusstheinfluenceofindividualmeasureandmeasuresynergyofenergyconservationandemissionreductionpoliciesrespectively.Theresultsshowthattheenergyconservationandemissionreductionpolicieshaveasignificanteffectontheoverallpromotionofindustrialupgrading.Thefinancialmeasuresandguidancemeasureshaveapositiveimpact;thefinancialmeasuresandguidancemeasureshavesignificantlypositiveeffect;however,theadministrativemeasures,fiscaltaxmeasures,andothereconomicmeasuresdotheopposite;thepositiveeffectofthesynergyofguidancemeasuresandfinancialmeasuresisgreaterthanthenegativeeffectofconsideringonlythesynergyoffiscaltaxmeasuresandothereconomicmeasures,andsignificantlygreaterthanthenegativeeffectofthesynergyofadministrativemeasures,fiscaltaxmeasures,andothereconomicmeasures.Weshouldstrengthenandemphasizetheuseofthemeasurethathaspositiveeffectonindustrialstructurerestructuringandupgradingindividuallyandsynergistically.

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  • 简介:TheimpactofenvironmentalregulationontechnologyinnovationisahotspotincurrentresearchwherealargenumberofempiricalstudiesarebasedonPorterHypothesis(PH).However,therearestillcontroversiesinacademiaabouttheestablishmentof'weak'and'narrow'versionsofPH.Basedonthepaneldataofapplicationforpatentofenergyconservationandemissionreduction(ECER)technologyofChinesecityscaleduring2008-2014,comprehensiveenergyprice,pollutantemission,etc.,mixedregressionmodelandsystematicgeneralizedmethodofmomentsmethodwereadopted,respectively,tostudytheimpactofmarket-orientedandcommand-and-controlpolicytoolonChina’sECERtechnologyinnovation.Theresultsshowthattheenvironmentalregulationhinderedthetechnologicalinnovationintheimmediatephase;however,itturnedouttobepositiveinthefirst-lagphase.Hence,theestablishmentof“weak”PHistime-bounded.Thecommand-and-controlpolicytoolplayedamorepositiveroleinpromotingtechnologicalinnovationinthefirst-lagphasethanmarket-orientedpolicytool.Therefore,'narrow'PHisnottenable.ThereasonisthatthemainparticipantsofChina’sECERtechnologyinnovationarestate-ownedcompaniesandpublicinstitutions.Regionallyspeaking,theimpactwhichcommand-and-controlpolicytoolhasontechnologicalinnovationatsightwasnonsignificantintheeastern,thecentral,andthewesternregionsofChinawhilstmarket-orientedpolicytoolhadanegativeeffect.Andmarket-orientedpolicytoolinthecentralregionhadstrongestnegativeeffect,whichwoulddiminishintheeasternregionandbecomeweakestinthewesternregion.Thiswasrelatedtoregionalenergyconsumptionlevelandthemarketeconomicvitality.

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