山西省城市化与生态环境综合水平协调度分析

利用2000-2009年统计数据,构建了山西城市化与生态环境综合指标体系.在对城市化综合发展水平与生态环境质量分析的基础上,建立了城市化发展与生态环境的协调度模型,对山西省不同年份城市化与生态环境的协调发展程度进行分析.研究结果表明:2000-2009年城市化综合水平逐步提高,生态环境综合质量呈波动性变化,即:2000-2003年山西省生态环境评价值呈现上升趋势,生态环境质量变好;从2003-2006年,生态环境评价值呈下降趋势,生态环境质量变差;2006-2009年生态环境综合评价值呈上升趋势,生态环境质量变好.从协调发展度来看,城市化与生态环境协调度呈波动性上升.从协调度发展类型来看,山西省城市化与生态环境在2000-2009年期间1a失调,1a接近失调,4a基本协调,4a协调发展.总的来说,山西省的城市化与生态环境较为协调,处于协调阶段.     

呼包鄂城市群城镇化与生态环境协调发展研究

以呼包鄂城市群为研究对象,通过构建城镇化与生态环境协调发展评价指标体系,运用综合评价模型、耦合度及耦合协调模型,对呼包鄂城市群城镇化与生态环境耦合协调发展的变化趋势展开分析.研究结果表明:呼包鄂城市群城镇化发展水平与生态环境协调水平不断提高,但生态环境水平滞后于城镇化发展水平;城镇化与生态环境协调发展水平逐步提高,耦合协调度由低度协调阶段发展为中度协调阶段,但协调发展程度仍然偏低.     

安徽省城镇化水平与质量耦合协调的时空演变特征

以安徽省为研究区域,从人口发展、经济发展、社会发展、生态环境、城乡统筹发展及开放程度等6个维度构建城镇化质量评价指标体系,在定量测算安徽省16个地级市2005年、2010年、2014年的城镇化质量的基础上,借助协调度模型对安徽省各地级市城镇化水平与质量的协调状况进行实证分析.研究表明:2005—2014年安徽省城镇化质量呈小幅度上升趋势,增长幅度为16.79%,经济发展、社会发展对城镇化质量的拉动作用较大;各地级市城镇化水平与质量协调度处于上升态势,由低度失调向多层次协调发展转变,但协调度的整体水平较低,截至2014年仍然有一半的城市处于弱度协调状态;各地级市城镇化水平与质量协调度空间差异显著,具有聚集特征,呈现"两高两低"空间分布格局.研究结果表明今后应将提高人口质量、改善生态环境、缩小城乡发展差距、提高开放程度等作为促进安徽省城镇化水平与质量协调发展的重要途径.     

我国高等教育与区域经济协调发展的量化评价

考察高等教育与区域经济协调发展水平的重要途径是量化分析高等教育投入、产出与区域经济发展的协调度及其时空变化趋势。运用系统协调度和空间统计分析方法,从时间和空间两个维度研究我国省域高等教育投入、产出与地区经济发展的协调度及其空间分布特征。研究结果显示,高等教育与区域经济的协调度不断提升,但始终处于低水平状态。高等教育投入协调度呈现明显的"东部凸起""中部塌陷"特征,高等教育产出协调度呈现东高、西低、中部居中的梯度分布态势。高等教育协调度在相邻省域之间存在显著的空间正相关关系,局部空间依赖关系具有一定的稳定性。     

西北地区绿色金融与生态环境耦合协调关系及发展趋势预测

以西北地区(陕西、甘肃、青海、宁夏、新疆)为研究对象，通过构建2010-2020年绿色金融与生态环境指标体系进行耦合协调关系评价.并通过GM(1.1)灰色预测模型对两系统2021-2025年耦合协调度进行预测.结果表明：(1)两系统综合评价指数f(x)与g(y)均不断提高，但不同年份西北地区绿色金融与生态环境发展滞后类型不同，到2020年两系统综合评价指数基本达到一致水平；(2)西北地区绿色金融与生态环境系统耦合度长期处于拮抗阶段，耦合协调度在时间维度上由轻度失调发展到勉强协调阶段；(3)预测结果显示：未来5年两系统耦合协调度大致延续前11年的上升趋势，到2021年耦合协调度水平可达到初级协调，到2022年耦合协调度水平可达到中级协调.故此，根据两系统之间的耦合协调发展关系及预测水平，针对绿色金融与生态环境发展现状提出建设性建议，以期为西北地区各个省份发挥比较优势实现两系统协调发展提供理论依据.     

河北省旅游环境承载力动态耦合特征研究

河北省作为京津冀协同发展的生态环境承载力地区,旅游产业的协同发展成为研究的重点和热点。通过构建旅游环境承载力评价指标体系,运用耦合度、协调发展度、系统协调发展度模型对案例地区进行分析。结果显示:1)河北省旅游环境综合承载指数呈现在波动中不断增长的变化趋势。2)旅游业发展指数、生态环境质量指数、经济发展指数与社会发展指数这4个指数基本呈现同步上升的趋势,表明河北省旅游产业复合生态系统基本处于协调发展的状态。3)从耦合协调度来看,整体上经历了较低水平的耦合阶段,拮抗阶段和磨合阶段,表现为从不协调到协调发展。目前处于关键的磨合阶段。     

武汉市城市化与生态环境协调发展定量评价与分析

以武汉市为研究区域,构建了武汉市城市化、生态环境系统协调发展的评价指标体系.在对城市化综合水平与生态环境综合质量进行测度的基础上,运用层次分析法计算出了武汉市城市化与生态环境协调度.结果显示:2000年～2010年,武汉市城市化水平总体上呈现出增长趋势,但武汉市生态环境水平随着城市化的发展呈现出波动型的变化特征,总体呈现出先下降后上升的趋势;从近两年来看,武汉市城市化发展水平与生态环境发展水平差距在缩小.从协调度分析可知,2000年～2005年,协调度呈现出逐年下滑趋势,2006年～2010年,协调度呈现逐年回升的趋势,且呈现出较为稳定的状态.总的来看,武汉市城市化与生态环境协调性有待加强.     

长江经济带钢铁工业—生态环境—区域经济耦合协调发展研究

钢铁工业是我国重要的基础工业,长江经济带作为我国钢铁工业发展的重要区域,开展长江经济带钢铁工业与生态环境、区域经济的耦合性研究,对于践行高质量发展理念和进行钢铁行业供给侧结构性改革有着重要的现实意义.论文以长江经济带为研究对象,通过构建钢铁工业—生态环境—区域经济(SER系统)耦合协调评价模型,选取2000年～2016年面板数据,进行耦合协调研究.研究表明：长江经济带SER系统耦合协调发展情况处于整体协调状态,耦合协调程度各省市分布不均.东部的耦合协调发展度明显高于中部和西部,江苏耦合协调发展度最高,贵州耦合协调度最低,浙江、湖北、湖南、安徽保持平稳,上海、重庆波动较大.     

厦门市生态环境与社会经济协调发展研究

以厦门市全域为研究区域,通过采用熵值赋权法确定各项指标权重,建立厦门市生态环境与社会经济协调发展度评价模型,对该区域2003-2012年间生态环境、社会经济系统内部各要素层间的协调性及其两系统间的总体协调发展度进行了定量评价与分析.分析结果表明:厦门市生态环境系统、社会经济系统内部协调性整体良好,且两系统间协调发展状况总体呈现比较稳定的上升趋势,但二者协调发展进程较为缓慢,在近10 a间均属于中度失调发展类型.值得注意的是,在此期间两者的协调发展水平呈现出明显的阶段性特征,即2003-2007年为城市社会经济滞后型,2008年变为生态环境滞后型,2009-2010属于城市社会经济滞后型,2011-2012年又转变为生态环境滞后型,二者在相互协调发展中具有交替式上升的特征.     

昌吉市城镇化与生态环境耦合协调度演变分析

文章以新疆昌吉市为研究对象,基于"P-S-R"模型、熵值法、综合指数法及耦合分析法评价2002-2015年昌吉市城镇化和生态环境耦合阶段及发展水平。结果表明:(1)城镇化质量与生态环境水平变化差异性明显。其中经济和社会城镇化对昌吉市城镇化综合水平影响最大,生态环境响应对生态环境综合水平影响最大。(2)城镇化和生态环境综合水平整体波动上升的演变趋势,两个系统发展水平差距呈现变小的趋势,耦合协调度在研究时期内总体水平相对较高,其变化范围是0.4419-0.8316。(3)城镇化与生态环境耦合协调度呈阶段性特征。2002年属于非协调阶段,其类型为衰退类-轻度失调城镇化滞后型;2003-2011年为转型期阶段,其类型分别为发展类-初级协调城镇化滞后型和中级协调发展类城镇化滞后型;2012-2015年属于协调阶段,其类型为发展类-良好协调城镇化滞后转向生态环境滞后型。     

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.     

A computer generator for randomly layered structures

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

海南岛地体及其毗邻陆缘晚中生代—新生代古地磁研究和构造演化

本文叙述了对海南岛及其毗邻大陆边缘白垩纪到第四纪地层岩石进行古地磁研究的全部工作过程。通过分析岩石中剩余磁矢量的磁偏角及磁倾角的变化,提出海南岛白垩纪以来经历的构造演化模式如下:早期伴随顺时针旋转而向南迁移,后期伴随逆时针转动并向北运移。联系该地区及邻区的地质、地球物理资料,对海南岛上述的构造地体运动提出以下认识:北部湾内早期有一拉张作用,主要是该作用使湾内地壳显著伸长减薄,形成北部湾盆地。从而导致了海南岛的早期构造运动,而海南岛后期的构造运动则主要是受南海海底扩张的影响。海南地体运动规律的阐明对于了解北部湾油气盆地的形成演化有重要的理论和实际意义。     

Exciton Seebeck in Molecular Systems

Various applications relevant to the exciton dynamics,such as the organic solar cell,the large-area organic light-emitting diodes and the thermoelectricity,are operating under temperature gradient.The potential abnormal behavior of the exicton dynamics driven by the temperature difference may affect the efficiency and performance of the corresponding devices.In the above situations,the exciton dynamics under temperature difference is mixed with     

Achieving Unusual States of Matter Under High Pressure

The elongation method,originally proposed by Imamura was further developed for many years in our group.As a method towards O(N)with high efficiency and high accuracy for any dimensional systems.This treatment designed for one-dimensional(ID)polymers is now available for three-dimensional(3D)systems,but geometry optimization is now possible only for 1D-systems.As an approach toward post-Hartree-Fock,it was also extended to     

《Chinese Science Bulletin》SUBJECT INDEX TO VOLUME 59(2014)

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An on-line scaling method for improving scalability of a database cluster

The explosive growth of the Internet and database applications has driven database to be more scalable and available, and able to support on-line scaling without interrupting service. To support more client's queries without downtime and degrading the response time, more nodes have to be scaled up while the database is running. This paper presents the overview of scalable and available database that satisfies the above characteristics. And we propose a novel on-line scaling method. Our method improves the existing on-line scaling method for fast response time and higher throughputs. Our proposed method reduces unnecessary network use, i.e. , we decrease the number of data copy by reusing the backup data. Also, our on-line scaling operation can be processed parallel by selecting adequate nodes as new node. Our performance study shows that our method results in significant reduction in data copy time.     

An improved R-tree based on childnode''s probability

R-Tree is a good structure for spatial searching. But in this indexing structure,either the sequence of nodes in the same level or sequence of traveling these nodes when queries are made is random. Since the possibility that the object appears in different MBR which have the same parents node is different, if we make the subnode who has the most possibility be traveled first, the time cost will be decreased in most of the cases. In some case, the possibility of a point belong to a rectangle will shows direct proportion with the size of the rectangle. But this conclusion is based on an assumption that the objects are symmetrically distributing in the area and this assumption is not always coming into existence. Now we found a more direct parameter to scale the possibility and made a little change on the structure of R-tree, to increase the possibility of founding the satisfying answer in the front sub trees. We names this structure probability based arranged R-tree (PBAR-tree).     

Integrating GIS Web services based on mediating architecture

The geographic information service is enabled by the advancements in general Web service technology and the focused efforts of the OGC in defining XML-based Web GIS service. Based on these models, this paper addresses the issue of services chaining,the process of combining or pipelining results from several interoperable GIS Web Services to create a customized solution. This paper presents a mediated chaining architecture in which a specific service takes responsibility for performing the process that describes a service chain. We designed the Spatial Information Process Language (SIPL) for dynamic modeling and describing the service chain, also a prototype of the Spatial Information Process Execution Engine (SIPEE) is implemented for executing processes written in SIPL. Discussion of measures to improve the functionality and performance of such system will be included.     

Tracking data management using topology of moving object database system for moving object constrained trajectory in LBS application

Advances in wireless technologies and positioning technologies and spread of wireless devices, an interest in LBS (Location Based Service) is arising. To provide location based service, tracking data should have been stored in moving object database management system (called MODBMS) with proper policies and managed efficiently. So the methods which acquire the location information at regular time intervals then, store and manage have been studied. In this paper, we suggest tracking data management techniques using topology that is corresponding to the moving path of moving object. In our techniques, we update the MODBMS when moving object arrived at a street intersection or a curved road which is represented as the node in topology and predict the location at past and future with attribute of topology and linear function. In this technique, location data that are corresponding to the node in topology are stored, thus reduce the number of update and amount of data. Also in case predicting the location,because topology are used as well as existing location information, accuracy for prediction is increased than applying linear function or spline function.