新疆城镇化与生态环境耦合协调度及其空间特征分析

随着新型城镇化的推进,城镇化发展过程中面临着严重的生态环境胁迫压力,开展城镇化与生态环境耦合协调度研究,对新疆的可持续发展提供理论与方法支撑.基于熵值法与层次分析法构建新疆城镇化指数和生态环境指数,然后基于耦合协调度模型定量分析新疆各地、州、市城镇化与生态环境的耦合协调度,最后分析新疆城镇化与生态环境耦合空间分布特征.结果表明:1)2014年新疆城镇化与生态环境综合指数为0.29和0.42,总体水平较低;2)2014年新疆14个地、州、市城镇化与生态环境发展耦合协调度在0.41~0.64之间,跨越低、中2个级别,分别占地、州、市数量的46.7%和53.3%;3)从空间分布看,2014年新疆14个地、州、市城镇化与生态环境发展的耦合度存在地域差异性,表现为北疆优于东疆,南疆最低.     

水环境约束下的干旱区绿洲城镇化

干旱区绿洲生态环境脆弱,生态问题突出,水与绿洲的生死存亡息息相关,是绿洲存在的关键因子.研究绿洲城镇化过程中的水资源问题,揭示其对本来就脆弱的绿洲水环境的影响强度、机制和规律,为克服城镇化过程中可能出现的盲目性及其对绿洲环境的危害,为绿洲城镇化的健康、稳定和合理发展以及加强绿洲生态环境建设,实现绿洲社会经济的持续发展以及最终实现绿洲现代化,有着现实的、长远的积极意义.本文主要就绿洲水资源的特点及其与城镇化之间的相互影响做了详细的分析.在论述绿洲水资源特点的基础上,全面分析了水资源对绿洲城镇化的影响和绿洲城镇化对水资源的影响,并提出适度的城镇化有利于绿洲水资源问题的好转.     

河北省可持续城镇化发展战略研究

通过分析河北省城镇化进程中违反可持续性发展原则的问题,并提出了以解决这些问题为契机,利用城镇化过程控制人口增长、保证农业与粮食安全、保护生态环境、优化产业结构、加强文化产业与第三产业,最终实现大、中城市与特色小城镇共同繁荣,实现农民真正城镇化等一系列合理化建议,为我省的可持续城镇化发展提供参考。     

南昌市城镇化与生态环境耦合分析

构建城镇化系统与生态环境系统评价指标体系的基础上,运用耦合协调模型,对南昌市2009-2018年城镇化与生态环境综合发展水平以及二者之间的耦合协调关系进行了测度与趋势分析。结果表明,南昌市城镇化与生态环境综合发展水平从总体上来看均处于上升趋势;二者的耦合协调关系总体上处在中度失调城镇化滞后型向中度协调生态环境滞后型的过渡阶段。其中,在2009-2011年处于失调阶段,在2012-2016年位于过渡阶段,在2017-2018年则处在协调阶段。城镇化与生态环境耦合在总体上处于生态环境滞后型。     

推进新型城镇化建设中的环境保护思路研究

甘肃省正处于转型跨越发展的关键期,随着城镇化进程的日益加快,人口、资源、环境的压力将更加突出.在推进城镇化战略的同时,实现生态环境的良性发展,进而实现二者的协调共赢是当前甘肃省可持续发展研究中亟待解决的问题.以"环境管理优化城镇化布局和形态,环境保护保障城镇化质量"为目标,从环境管理的角度探讨甘肃省城镇化进程中存在的诸多问题,并从降低城乡差距、加大环保投入以及提高政府环境管理水平等三方面提出合理优化的思路与对策,以协调城镇化与环境保护的关系.     

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。     

海南省农村经济生态系统的可持续发展研究

采用定性和定量研究相结合的方法,分析海南省各市县农业生态环境与农村综合经济实力发展水平的相互关系,以及农村生态系统开放度与农村经济发展和农业生态环境之间的关系等问题,并有针对性地提出海南农村经济生态系统可持续发展的对策.     

新型城镇化和水生态环境的一点思考

文章以新型城镇化为前提,分析研究了专家学者对城镇化与水生态环境之间的关系的研究的进展,提出了新形式下,城镇化发展与水生态环境面临的一些新问题及相对的研究内容和研究方法,实现城镇化与水生态环境的和谐发展。     

新型城镇化建设与县域经济关联性分析——以河南省平顶山市为例

以煤炭资源型城市——河南省平顶山市为例,运用灰色关联度分析法分析平顶山市新型城镇化建设与县域经济、产业结构之间的关联度.结果表明,新型城镇化发展的质量因子与县域经济发展最为密切,从产业结构来看,第二产业对新型城镇化发展影响最显著,第三产业也正在逐步成为平顶山市新型城镇化发展的推动力量.提出从产业结构、分配机制、生态环境等方面解决新型城镇化发展的新动力,以促进平顶山市县域经济发展.     

城镇化视角下长江经济带城市生态环境健康评价

随着新型城镇化进程的加快,如何实现城镇化与生态环境协调发展将是长江经济带发展的核心议题.本文以长江经济带的36个城市为研究对象,从生态环境压力、状态、恢复潜力三个维度出发构建生态环境健康评价指标体系,建立熵权综合评价模型,对各城市生态环境健康进行了综合评价.结果表明:长江经济带城市生态环境水平存在明显的空间差异,长江下游城市生态环境综合指数整体高于长江中游和上游.根据长江沿江36个城市生态环境各指标的差异,借助PCA排序对其进行分类,将36个城市大致分为六大类型.最后,利用相关分析探讨城镇化与生态环境压力、状态、恢复潜力等指标的关联性,了解城镇化背景下长江经济带城市生态环境水平的差异,结果表明城镇化与生态环境压力呈现指数曲线变化;长江经济带上、中、下游城市间生态环境与城镇化的耦合特征不同.     

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.     

Characterization of Ordovician carbonate reservoirs, southeastern Saskatchewan, Canada

The discovery of the prolific Ordovician Red River reservoirs in 1995 in southeastern Saskatchewan was the catalyst for extensive exploration activity which resulted in the discovery of more than 15 new Red River pools. The best yields of Red River production to date have been from dolomite reservoirs. Understanding the processes of dolomitization is, therefore, crucial for the prediction of the connectivity, spatial distribution and heterogeneity of dolomite reservoirs.The Red River reservoirs in the Midale area consist of 3～4 thin dolomitized zones, with a total thickness of about 20 m, which occur at the top of the Yeoman Formation. Two types of replacement dolomite were recognized in the Red River reservoir: dolomitized burrow infills and dolomitized host matrix. The spatial distribution of dolomite suggests that burrowing organisms played an important role in facilitating the fluid flow in the backfilled sediments. This resulted in penecontemporaneous dolomitization of burrow infills by normal seawater. The dolomite in the host matrix is interpreted as having occurred at shallow burial by evaporitic seawater during precipitation of Lake Almar anhydrite that immediately overlies the Yeoman Formation. However, the low δ18O values of dolomited burrow infills (-5.9‰～ -7.8‰, PDB) and matrix dolomites (-6.6‰～ -8.1‰, avg. -7.4‰ PDB) compared to the estimated values for the late Ordovician marine dolomite could be attributed to modification and alteration of dolomite at higher temperatures during deeper burial, which could also be responsible for its 87Sr/86Sr ratios (0.7084～0.7088) that are higher than suggested for the late Ordovician seawaters (0.7078～0.7080). The trace amounts of saddle dolomite cement in the Red River carbonates are probably related to "cannibalization" of earlier replacement dolomite during the chemical compaction.     

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.     

A computer generator for randomly layered structures

AcomputergeneratorforrandomlylayeredstructuresYUJia shun1,2,HEZhen hua2(1.TheInstituteofGeologicalandNuclearSciences,NewZealand;2.StateKeyLaboratoryofOilandGasReservoirGeologyandExploitation,ChengduUniversityofTechnology,China)Abstract:Analgorithmisintrod…     

An Index mechanism for multi-scale view in spatial databases

There are numerous geometric objects stored in the spatial databases. An importance function in a spatial database is that users can browse the geometric objects as a map efficiently. Thus the spatial database should display the geometric objects users concern about swiftly onto the display window. This process includes two operations:retrieve data from database and then draw them onto screen. Accordingly, to improve the efficiency, we should try to reduce time of both retrieving object and displaying them. The former can be achieved with the aid of spatial index such as R-tree, the latter require to simplify the objects. Simplification means that objects are shown with sufficient but not with unnecessary detail which depend on the scale of browse. So the major problem is how to retrieve data at different detail level efficiently. This paper introduces the implementation of a multi-scale index in the spatial database SISP (Spatial Information Shared Platform) which is generalized from R-tree. The difference between the generalization and the R-tree lies on two facets: One is that every node and geometric object in the generalization is assigned with a importance value which denote the importance of them, and every vertex in the objects are assigned with a importance value,too. The importance value can be use to decide which data should be retrieve from disk in a query. The other difference is that geometric objects in the generalization are divided into one or more sub-blocks, and vertexes are total ordered by their importance value. With the help of the generalized R-tree, one can easily retrieve data at different detail levels.Some experiments are performed on real-life data to evaluate the performance of solutions that separately use normal spatial index and multi-scale spatial index. The results show that the solution using multi-scale index in SISP is satisfying.     

Jane Eyre——A Feminist In The 19th Century

In the 19th century the society was controlled by men, and women were just appendants of them, they had not any rights and freedom. But Jane was an exception, she showed some characteristics of early feminist. Jane showed her characteristics of feminism in three aspects: rebellion, equality, and independence. These characteristics were helpful to her success, and feminism is the only way out for women of that time.     

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-