陕西省经济发展与环境污染的计量模型研究

根据陕西省1989～2008年统计年鉴中相关经济和环境数据,建立了人均GDP与典型环境指标工业三废、工业二氧化硫以及烟尘排放量的计量模型,并对其变化原因进行了分析.结果表明,陕西省经济发展与环境污染的计量模型中,并未出现典型的"倒U"型曲线模型,而是各有其特点,烟尘排放量与工业废气排放量都没有出现转折趋势,工业固废排放量几乎呈现直线式上升,工业废水和工业二氧化硫的污染已经有所好转,但趋势还不太稳定,文章最后提出了一些建议.     

民族地区经济发展与环境污染关系的检验——以宁夏回族自治区为例

近年来环境状况相比以前有所改善,但污染形势依然严峻.利用宁夏1993—2016年时间序列数据,选取人均GDP为经济指标,工业"三废"排放量和二氧化硫排放量为环境污染指标,运用向量自回归模型对经济发展与环境污染之间的关系进行探究.研究结果显示:(1)工业废水排放量、一般固体废弃物排放量、二氧化硫排放量增加1%时,人均GDP分别下降0.4315%、0.127996%、0.16636%.(2)人均GDP对环境污染的冲击响应在第一期表现为0.长期来看,给废水排放量、二氧化硫排放量一个正向冲击在第四期后表现为持续降低,对来自废气排放量冲击在前三期表现为"倒U型",而后表现为缓慢下降;对来自固体废物产生量的冲击表现为"降低—增长"趋势,但始终没有冲破0.(3)环境污染指标排放增长对人均GDP贡献度较高,人均GDP对环境污染排放的贡献率较小.     

镇江市工业污染物排放规律统计分析

选取镇江市1997~2006年经济增长与工业环境污染数据,通过分析经济因子与工业环境因子相互关系,建立了镇江市人均GDP与工业环境污染物排放模型,分析镇江市环境库兹涅茨曲线（EKC）特征。研究发现,镇江市的经济与环境发展比较符合环境库兹涅茨曲线,基本呈倒U形,人均GDP与废水排放量曲线已接近转折点,人均GDP与工业废气排放量、二氧化硫排放量和固体废弃物产生量曲线已处于转折点,表明镇江市刚进入经济与环境协调发展的有序时期,环境执法力度加大和产业结构的调整已产生了较明显的环境效益,该研究可为评价和制定镇江市环境经济政策提供科学依据。     

河南省经济增长与环境污染关系的实证研究

通过对经济发展相对滞后的河南省经济增长与环境污染现状进行分析,选取人均地区生产总值和工业废水排放量、工业固体废物产生量和工业废气中的二氧化硫排放量3个环境污染指标作为分析变量,建立VAR模型,并对变量的时序数据进行平稳性检验,采用广义脉冲响应函数的方法,分析河南省经济发展与环境之间的长期动态关系.研究结果表明,在2002—2014年间,河南省的环境污染对经济增长的累计响应值均为正,说明河南省的经济增长将导致环境污染物排放量的整体增加,工业废水对经济增长的累积响应值为负,说明随着人们对环境需求的偏好,导致经济增长压力较大,应更加关注水污染的治理,加快调整产业结构.     

绵阳市工业发展与环境污染关系的实证分析

经济与环境的关系问题一直是人们关注的焦点。本文利用绵阳市2002-2008年的统计数据,通过建立工业经济发展与环境污染之间的回归模型,分析工业经济发展与工业废水、工业二氧化硫、工业烟尘排放量之间的关系,进一步提出通过经济环境改善政策,加强对工业废水、工业二氧化硫、工业烟尘的排放管理或者是对环境污染项目和企业的控制,从而促进工业经济的发展,实现经济与环境的协调发展。     

基于EKC改进模型的福建经济与大气环境质量关系分析

基于福建省2011—2017年的经济数据和大气环境质量数据,选取人均GDP和二氧化硫排放量、氮氧化物排放量作为指标,通过改进的环境库兹涅茨曲线(EKC)进行拟合,研究福建省大气环境质量和经济增长的关系。结果表明:福建省人均GDP与大气污染物中二氧化硫排放量存在“倒U型”关系,且已经过顶部拐点;同时,随着人均GDP的增长,氮氧化物排放量呈现下降的趋势,说明福建省的大气环境质量随着经济增长而上升,验证了在一定阶段,经济增长与环境质量之间的正相关关系。福建省在控制及治理大气污染方面的措施较好,其对环境保护的重视及其产业结构特点,对其他省份的后续发展具有一定借鉴意义。     

广西经济增长与环境污染关系研究

根据广西2001—2010年经济增长与环境质量的相关数据,采用SPSS软件系统,建立了单位GDP大气污染排放量与人均GDP的回归模型.分析结果表明:广西的经济增长与环境污染不存在倒U型的环境库兹涅茨曲线,而是存在正U型的环境库兹涅茨曲线,目前仍未出现拐点。这表明,广西仍处在经济发展的初级阶段,经济发展总体较为落后,经济增长与环境保护,二者并不能实现"双赢"的发展模式。广西目前以及将来存在着"经济增长和单位GDP大气污染排放量"的发展悖论,该悖论是困扰广西进一步发展的强约束条件。建议广西应当在自身发展战略的实施过程中给予重视,并注重发展低碳产业,努力实现经济增长和单位GDP大气污染排放量的相对脱钩发展,实现低碳经济转型目标。     

基于VAR模型的安徽省环境污染与经济增长关系实证研究

通过选取1985—2014年安徽省环境污染指标与人均GDP的年度数据,建立经济增长与环境污染的向量自回归VAR模型,并应用脉冲响应和方差分解对安徽省经济增长与环境污染之间的关系进行动态实证分析.结论表明:工业废气与经济增长呈现"倒U"形曲线形式,工业固体废弃物产生量与经济增长呈现"倒L"形曲线形式,工业废水排放量对经济增长有抑制作用.     

二十年湖北省经济增长与环境质量关系的研究

经济增长与环境污染之间的关系常用环境库兹涅茨曲线(EKC)来描述,典型的EKC一般呈倒U形。本文采用了工业废水排放量、工业废气排放量和工业固体废物产生量三项环境指标,和一项经济指标(人均GDP),根据1990-2009年湖北省经济与环境数据,运用EViews软件建立人均GDP与工业"三废"排放量的模型,对湖北环境库兹涅茨曲线特征进行了研究。结果表明,湖北省的经济发展水平与环境质量之间的关系基本符合环境库兹涅茨曲线,但与典型的"倒U"型环境库兹涅茨曲线不一致。研究认为,湖北省的经济在快速增长的同时,环境正处于恶化状态,在此阶段,经济与环境的矛盾日益突出。要实现湖北省的环境与经济协调和可持续发展,必须加大环保力度,防治结合,走循环经济的新型工业化道路。     

广西经济增长与环境污染关系的计量分析

本文基于协整理论,利用SAS软件分析了广西环境污染与经济增长的关系,建立了两者的长期均衡关系式和短期动态关系式．结果表明,广西工业废水排放量、工业废气排放量、工业固体废弃物排放量与人均GDP分别呈u型、倒U型、N型．最后提出了一些合理化的建议．     

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.     

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     

On the Thermodynamic Limit for Responses to Static Electromagnetic Fields

For molecular systems,the quantum-mechanical treatment of their responses to static electromagnetic fields usually employs a scalar-potential treatment of the electric field and a vector-potential treatment of the magnetic field.Although the potential for each field separately is associated with the choice of an(unphysical)origin,the precise choice of the origin for the electrostatic field has little consequences for the results.This is different for the