城市化与生态环境非协调性耦合关系识别研究

以辽宁省1996—2015年的城市化与生态环境协调耦合关系为研究对象,构建城市化与生态环境评价指标体系,依据判定标准对其进行识别.结果表明:①城市化和生态环境水平都有大幅度的增长,尤其是生态环境水平实现了跨越式增长;②城市化与生态环境的协调耦合关系具有明显的阶段性特征,经历了低水平耦合、拮抗阶段和磨合阶段,在1996—2008年处于磨合非协调耦合阶段,在2009—2015年处于拮抗非协调耦合阶段.由此表明辽宁省在推进城市化进程中,生态环境破坏比较严重,给生产生活带来严重的损失.虽然近期城市化与生态环境协调耦合关系开始向好,但离高水平的协调耦合关系仍任重而道远.最后讨论了非协调性关系的形成机制.     

亳州市城市化与水资源利用耦合协调关系研究

通过构建亳州城市化发展与水资源利用的指标体系,利用熵值法确定指标权重,分别评价2003—2017年亳州市城市化和水资源利用综合水平的发展变化,在此基础上构建耦合协调度模型,分析亳州市城市化与水资源利用的耦合协调关系。结果表明:亳州城市化综合指数整体呈上升趋势,特别是2010年以后综合指数的增幅明显加快,是人口城市化、经济城市化、社会城市化、空间城市化过程综合作用的结果;水资源利用水平变化起伏较大,2003—2011年整体呈现趋势性下降,2011年以后表现出趋势性上升,主要受水资源量等要素的影响;城市化与水资源利用的耦合度2003—2009年呈现波动上升,增加幅度大,2009—2017年耦合度整体处于相对平稳阶段,有小幅波动;耦合协调度不断提高,从2003年的中度失调阶段发展到2017年的良好协调阶段。     

基于灰色关联分析的呼和浩特市城市化与生态环境耦合协调发展研究

在构建城市化与生态环境耦合系统指标体系的基础上,利用基于灰色关联分析的耦合度模型和协调度模型,揭示了1990-2011年呼和浩特市城市化与生态环境的交互耦合机理,并对二者的耦合度及协调度进行定量评价与分析.结果表明:(1)呼和浩特市城市化与生态环境各指标均为中等及以上耦合强度,由此遴选出的4项城市化指标和6项生态环境指标较好地反映了系统的耦合作用机制;(2)1990-2011年呼和浩特市城市化与生态环境系统处于磨合阶段,其协调度为中度协调.     

旅游业-城市化-生态环境耦合协调及发展类型研究——以京津冀地区为例

以京津冀地区为案例地,通过分析京津冀地区旅游业、城市化和生态环境子系统的耦合协调发展机理,建构旅游业-城市化-生态环境的评价指标体系,运用主成分分析法及耦合协调度量化模型,对京津冀地区旅游业-城市化-生态环境耦合协调关系及其发展类型进行实证研究。结果表明:2004—2013年,京津冀地区旅游业、城市化、生态环境系统间耦合协调度由失调逐步演变至协调;城市内部旅游业系统发展迅速,但阶段内波动性较强;城市化水平保持稳步增长;生态环境矛盾随城市内部旅游业和城市化发展而逐步凸显。京津冀三地耦合发展类型基本以城市化超前发展型为主,少有旅游超前发展型出现。     

黄河三角洲城市土地利用与生态环境耦合关系

为了探究城市土地利用与生态环境之间存在的耦合关系,找出促进城市土地利用与生态环境和谐发展的方法,以黄河三角洲区域核心城市东营和滨州为研究区域,利用耦合协调测度模型,对研究区域2002—2016年的土地利用综合指数、生态环境综合指数以及2个系统的耦合协调度进行分析,同时对指标的权重进行敏感性验证。结果表明,2002—2016年东营和滨州的土地利用与生态环境的综合指数均呈现上升趋势,从耦合度和耦合协调度来看,研究区域处于良好耦合阶段,土地利用与生态环境的协调发展经历了从中度失调到良好协调的5个阶段,应用熵值法确定的指标权重合理可靠。研究结果可为东营和滨州的城市管理提供科学依据,也可为同类型城市的研究提供方法和参考。     

江西省新型城镇化与生态环境耦合协调及演变趋势分析

通过分析新型城镇化建设进程中自然与人文要素的耦合关系,构建江西省新型城镇化与生态环境耦合协调评价指标体系,评价2010—2019年江西省新型城镇化与生态环境综合发展水平及耦合协调特征。构建江西省新型城镇化与生态环境耦合系统动力学模型,仿真模拟2020—2029年江西省新型城镇化与生态环境交互耦合演变趋势。研究表明:1) 2010—2019年江西省新型城镇化建设综合评价得分始终低于生态环境发展综合评价得分,但二者的耦合协调关系由伊始的处于不协调类别中的中度失调阶段,逐步转变为协调发展类别中的高度协调阶段; 2) 2020—2029年江西省新型城镇化评价指数与生态环境评价指数逐年上升,二者耦合协调关系逐渐达到同步高度协调。     

和田地区城市化水平综合测度及预测

以和田地区为研究区域,分别从人口、社会、经济、土地四个方面,构建城市化综合指标体系,运用2001—2012年的数据,采用变异系数法对城市化水平各指标层予以量化处理,基于灰色数列GM(1,1)对2013—2017年城市化水平进行预测.结果表明,和田地区城市化发展过程中,人口、社会、经济、土地四个子系统都与城市化呈正相关关系,其中经济城市化起主导作用;和田地区城市化水平呈持续上升趋势,根据发展速度可分为两个阶段,2001—2007年缓慢发展阶段,2008—2012年快速发展阶段.根据对城市化水平的预测,可知和田地区城市化未来几年内发展良好,城市化发展提升的空间较大.     

福州城市化与生态环境耦合状况分析

研究表明:随着社会经济大发展,福州市城市化指数整体上呈持续上升的趋势,生态环境指数波动性上涨;城市化水平与生态环境协调度一直维持在较高的水平,但耦合协调度却维持在低水平增长;结合城市化指数、生态环境指数和耦合协调度,可推出本分析时段内的耦合协调度类型处于勉强调和与调和之间,城市化与生态环境的耦合协调度由低水平磨合阶段向磨合阶段演变.     

中卫市城市化与生态环境耦合机制研究

城市化与生态环境间存在复杂的耦合关系,本文以宁夏回族自治区中卫市为研究对象,运用灰色关联分析法,定量分析了2004~2014年中卫市城市化与生态环境间的耦合机制及发展规律,并给出政策思考性建议.研究表明,中卫市城市化与生态环境系统间耦合程度较高,逐步从低水平协调向拮抗阶段进而向磨合阶段发展,城市化与生态环境间存在着复杂的制约和拮抗关系.伴随城市化的发展和升级,二者之间将逐步实现高水平协调与发展.     

贵阳市城市化与生态环境耦合关联分析

以贵阳市为例,构建城市化与生态环境评价指标体系,运用灰色关联模型、耦合度与耦合协调度模型,对其耦合关联情况进行分析。结果显示:2004—2011年贵阳市的城市化水平逐年增长,生态环境水平呈先增长后下降趋势;城镇生活污水处理率等生态环境指标是影响城市化发展的主要因素,煤气供气总量等城市化指标是影响生态环境的主要因素;贵阳市城市化与生态环境耦合度处于颉抗阶段,且基本处于中度协调的耦合。     

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