基于VAR模型的城镇化、工业化对城乡统筹的影响分析———重庆市的实证

运用VAR模型对重庆市城镇化、工业化与城乡统筹动态关系进行实证研究,以揭示城镇化、工业化对城乡 统筹的影响关系.结果显示:城镇化、工业化对城乡统筹具有明显的带动作用,而城乡统筹对城镇化也具有促进作 用,三者间存在长期均衡关系;从动态角度看,城镇化、工业化对城乡统筹的推动作用具有持续性,且随着滞后期 的加大而趋于稳定;城乡统筹具有明显的累积效应,同时城镇化和工业化对城乡统筹发展的贡献程度不等并有较 大的提升空间.     

基于PVAR模型三峡库区基础设施与经济增长的互动效应

基础设施与经济增长具有动态互促互进的理论关联,但对于外部援助下的贫困地区发展而言,二者关系具有现实特殊性;三峡库区既有历史贫困特征,又受到外部援助资金的大力支持,运用面板向量自回归模型对库区15个区县2000—2018年的基础设施和经济增长进行了实证分析;研究结果发现:三峡库区基础设施对经济增长具有动态促进作用,反之则不显著,二者具有单向互动关系,在脉冲响应分析中,二者互动效应呈现"倒U型"特征,时滞效应呈现"反J型"特征;现阶段,三峡库区基础设施与经济增长互动效应还不明显,在一系列帮扶政策收官期限之前,建议从两方面来增强基础设施与经济增长的内生互动,一是要明确各类帮扶政策分类分阶段有序退出的时间表,二是以区县为主体共建三峡库区基础设施发展基金。     

城镇化对碳排放的门槛效应:省际数据的实证研究简

基于中国1996-2012年29个省区的面板数据,在环境库兹涅茨曲线的分析框下,采用非动态门槛面板估计方法,考察了城镇化对中国碳排放的门槛效应.研究表明,城镇化对中国碳排放的影响存在显著的门槛效应:当地区人均收入、城镇化水平比较低时,城镇化推进将带来碳排放的显著提升;而当人均收入、城镇化水平较高时,城镇化则会降低碳排放.本文结论为中国城镇化推进、产业结构调整和节能环保政策的制定积累资料.     

城镇化、工业化与农业现代化互动关系研究——以江西省为例

城镇化是扩大内需的重要途径,工业化是增强综合国力的强大动力,农业现代化是提高生产力的根本举措.三者并非孤立,存在着互动效应,城镇化推动工业化与农业现代化的发展,工业化加快城镇化与农业现代化的进程,农业现代化提升城镇化与工业化的水平.在对三者相互影响、共同作用的互动效应进行理论分析的基础上,依据江西省1978~2013年城镇化、工业化与农业现代化相关数据,采用向量自回归模型(VAR),进行实证分析.研究结果显示:江西省实证分析结果与理论分析结果存在着相悖之处,城镇化的推进抑制了农业现代化水平的提高;工业化的发展阻碍了城镇化的推进;工业化与农业现代化之间并未实现相互促进的关系.分析相悖原因主要可能来源于江西省独特的省情.     

城镇化对碳排放的门槛效应:省际数据的实证研究

基于中国1996-2012年29个省区的面板数据,在环境库兹涅茨曲线的分析框下,采用非动态门槛面板估计方法,考察了城镇化对中国碳排放的门槛效应.研究表明,城镇化对中国碳排放的影响存在显著的门槛效应:当地区人均收入、城镇化水平比较低时,城镇化推进将带来碳排放的显著提升;而当人均收入、城镇化水平较高时,城镇化则会降低碳排放.本文结论为中国城镇化推进、产业结构调整和节能环保政策的制定积累资料.     

新型工业化与新型城镇化时空耦合协调性分析——以我国西部12省为例

基于新型工业化和新型城镇化的内涵,通过建立复合系统协调度模型,从静态和动态的角度对我国西部12省区新型工业化与新型城镇化的时空耦合协调性进行分析评价。结果显示:西部地区新型工业化和新型城镇化交互作用,共同推进社会经济系统有序向前发展,新型工业化与新型城镇化的协调发展过程具有空间分异性和动态波动性。进而提出促进我国西部地区新型工业化与新型城镇化协调发展的对策建议。     

空间溢出视角下城镇化对经济韧性的影响——基于长三角城市41个城市面板数据的实证分析

利用长三角城市群41个城市2006—2019年面板数据,通过计算Moran’I指数发现城镇化与城市经济韧性存在空间相关性,在此基础上,引入控制变量构建空间计量面板模型,研究城镇化发展对城市经济韧性是否存在促进作用与空间溢出效应。研究发现：城镇化水平对城市经济韧性存在正相关关系,并且通过将总效应分解为直接效应和间接效应,发现城镇化发展不仅对本地区的城市经济韧性产生直接促进作用,同时还对邻近地区的经济韧性产生间接促进作用。     

R&D资对经济增长作用的空间动态面板模型

文章运用空间动态面板数据模型,采用1997-2007年中国30个省级区域的动态面板数据,计量分析R&D投资对经济增长的作用.结果表明,各解释变量与经济增长之间存在长期稳定的均衡关系,研发投入对区域经济增长有显著促进作用,省域研发投入存在显著的空间相关性,但没有表现出明显的知识溢出效应;引入高技术产业研发投入项显著地增强了研发投入对区域经济增长的影响,然而人力资本与R&D投资的交互乘积项并没有对区域经济增长产生预期的推动作用.     

R&D投资对经济增长作用的空间动态面板模型

文章运用空间动态面板数据模型,采用1997—2007年中国30个省级区域的动态面板数据,计量分析RD投资对经济增长的作用。结果表明,各解释变量与经济增长之间存在长期稳定的均衡关系,研发投入对区域经济增长有显著促进作用,省域研发投入存在显著的空间相关性,但没有表现出明显的知识溢出效应;引入高技术产业研发投入项显著地增强了研发投入对区域经济增长的影响,然而人力资本与RD投资的交互乘积项并没有对区域经济增长产生预期的推动作用。     

旅游业发展、空间溢出与城镇化建设——基于31个省空间面板数据分析

研究旅游业发展和城镇化建设之间的文献均采用传统回归研究方法,传统回归研究会产生忽略空间集聚及相关性等问题,针对这些缺陷文章采用经济学较为前沿的空间面板计量方法,利用中国31个省份2001～2013年面板数据,实证检验了旅游业发展与城镇化建设之间的影响关系.研究结果表明：旅游业发展呈现出明显的全局和局部空间自相关性,空间集聚特征较为明显;旅游业发展对城镇化建设具有空间溢出效应,呈现显著正向促进作用.     

Markedness and its Interpretation in Language Use

Language markedness is a common phenomenon in languages, and is reflected from hearing, vision and sense, i.e. the variation in the three aspects such as phonology, morphology and semantics. This paper focuses on the interpretation of markedness in language use following the three perspectives, i.e. pragmatic interpretation, psychological interpretation and cognitive interpretation, with an aim to define the function of markedness.     

Features of Women's language

Language is a means of verbal communication. People use language to communicate with each other. In the society, no two speakers are exactly alike in the way of speaking. Some differences are due to age, gender, statue and personality. Above all, gender is one of the obvious reasons. The writer of this paper tries to describe the features of women＇s language from these perspectives： pronunciation, intonation, diction, subjects, grammar and discourse. From the discussion of the features of women＇s language, more attention should be paid to language use in social context. What＇s more, the linguistic phenomena in a speaking community can be understood more thoroughly.     

An Analysis of Catherine＇s Character——Wuthering Heights

Wuthering Heights, Emily Bronte＇s only novel, was published in December of 1847 under the pseudonym Ellis Bell. The book did not gain immediate success, but it is now thought one of the finest novels in the English language. Catherine is the key character of this masterpiece, because everybody and everything center on her though she had a short life. We can understand this masterpiece better if we know Catherine well.     

Lower Paleozoic oil relationships within Williston Basin, Canada

The Williston Basin is a significant petroleum province, containing oil production zones that include the Middle Cambrian to Lower Ordovician, Upper Ordovician, Middle Devonian, Upper Devonian and Mississippian and within the Jurassic and Cretaceous. The oils of the Williston Basin exhibit a wide range of geochemical characteristics defined as "oil families", although the geochemical signature of the Cambrian Deadwood Formation and Lower Ordovician Winnipeg reservoired oils does not match any "oil family". Despite their close stratigraphic proximity, it is evident that the oils of the Lower Palaeozoic within the Williston Basin are distinct. This suggests the presence of a new "oil family" within the Williston Basin. Diagnostic geochemical signatures occur in the gasoline range chromatograms, within saturate fraction gas chromatograms and biomarker fingerprints. However, some of the established criteria and cross-plots that are currently used to segregate oils into distinct genetic families within the basin do not always meet with success, particularly when applied to the Lower Palaeozoic oils of the Deadwood and Winnipeg Formation.     

低渗透非均质砂岩油藏启动压力梯度研究

理论推导与室内实验相结合,建立了低渗透非均质砂岩油藏启动压力梯度确定方法。首先借助油藏流场与电场相似的原理,推导了非均质砂岩油藏启动压力梯度计算公式。其次基于稳定流实验方法,建立了非均质砂岩油藏启动压力梯度测试方法。结果表明:低渗透非均质砂岩油藏的启动压力梯度确定遵循两个等效原则。平面非均质油藏的启动压力梯度等于各级渗透率段的启动压力梯度关于长度的加权平均;纵向非均质油藏的启动压力梯度等于各渗透率层的启动压力梯度关于渗透率与渗流面积乘积的加权平均。研究成果可用于有效指导低渗透非均质砂岩油藏的合理井距确定,促进该类油藏的高效开发。     

On Tragic Consciousness In The Works By Ernest Hemingway

As an American modern novelist who were famous in the literary world, Hemingway was not a person who always followed the trend but a sharp observer. At the same time, he was a tragedy maestro, he paid great attention on existence, fate and end-result. The dramatis personae's tragedy of his works was an extreme limit by all means tragedy on the meaning of fearless challenge that failed. The beauty of tragedy was not produced on the destruction of life, but now this kind of value was in the impact activity. They performed for the reader about the tragedy on challenging for the limit and the death.     

Design and analysis of generic LBS application developing platform

Location based services is promising due to its novel working style and contents.A software platform is proposed to provide application programs of typical location based services and support new applications developing efficiently. The analysis shows that this scheme is easy implemented, low cost and adapt to all kinds of mobile nework system.     

Achieving Unusual States of Matter Under High Pressure

正The periodicity of the elements and the non-reactivity of the inner-shell electrons are two related principles of chemistry,rooted in the atomic shell structure.Within compounds,Group I elements,for example,invariably assume the+1 oxidation state,and their chemical properties differ completely from those of the p-block elements.These general rules govern our understanding of chemical structures and reactions.Using first principles calcula-     

Exchange-Correlation and Electronic Excitation Energies from Pairing Matrix Fluctuations

We have developed an adiabatic connection to formulate the ground-state exchange-correlation energy in terms of pairing matrix linear fluctuations.This formulation of the exchange-correlation energy opens a new channel for density functional approximations based on the many-body perturbation theory.We illustrate the potential of such approaches with an approximation based on the particle-particle Random Phase Approximation(pp-RPA).This re-     

Density Functional Theory for the Response of Periodic Systems to Electric Fields Based on the Vector Potential Approach

正The electronic and nuclear(structural/vibrational)response of 1D-3D nanoscale systems to electric fields gives rise to a host of optical,mechanical,spectral,etc.properties that are of high theoretical and applied interest.Due to the computational difficulty of treating such large systems it is convenient to model them as infinite and periodic(at least,in first approximation).The fundamental theoretical/computational problem in doing so is that