江苏省交通优势度与旅游产业发展水平空间耦合分析

旅游产业的发展与地区交通水平有着密切的关系.以江苏省为例,通过引入定量评价区域交通条件的区域交通优势度和构建评价旅游产业发展水平的指标体系,得出江苏省各个城市的交通发展与旅游产业发展的评价指数.借鉴物理学耦合度函数构建了旅游产业与区域交通发展耦合协调度模型,对旅游业与区域交通水平耦合协调发展状况进行了实证研究.结果发现,江苏省旅游产业发展水平与交通水平发展具有空间耦合性,空间耦合呈现集聚特征.     

四川省工业地价区域耦合协调与平衡研究

工业地价对提高土地利用效率、优化区域产业布局有着重要的影响.通过整理四川省183个县(市)区的工业用地交易数据,构建基于MATLAB全局趋势分析与克里金空间插值的工业地价时空演变数字模型,采用熵值法与多因素综合评价法对全省社会经济发展水平进行定量分析,并利用耦合协调度模型探寻工业地价与区域经济、土地取得成本间的协调平衡关系.结果表明:1)四川省工业地价与区域经济发展的耦合协调度偏低,总体呈现不协调的状况;除"成都地区"外,省内其他地区耦合协调度均低于0.4,地域空间分异现象明显.2)四川省工业地价与土地取得成本间普遍呈现不平衡状况,平均工业地价小于土地取得成本的区域占比66.66%,工业地价水平与土地取得成本之间的矛盾明显.3)四川省工业地价区域耦合协调与平衡状况为区域协调成本平衡型、区域协调成本失衡型、区域失调成本平衡型、区域失调成本失衡型4种类型,其中区域协调成本平衡型分布最少,区域失调或成本失衡型数量较多,应尽快建立协调平衡的省内工业地价体系.     

大同市旅游产业与城镇化耦合协调度及其影响机制

借鉴物理学中的耦合理论并选取大同市为案例地,依据耦合协调度等级及阶段划分标准,将大同市旅游产业与城镇化耦合协调度划分为3个阶段:探索失调阶段、过渡发展阶段、创新上升阶段;并从静态和动态两个视角,探索大同市旅游产业与城镇化耦合协调度的影响机制。结果发现:大同市旅游产业与城镇化之间存在显著的耦合协调发展特征;大同市旅游产业与城镇化发展水平呈现波动上升趋势,旅游产业滞后类型占多数;大同市两个系统间的耦合协调水平呈现波动上升趋势,从2011年实现了从失调阶段向协调阶段的转变;从静态角度看,大同市旅游业发展水平、经济城镇化、人口城镇化、空间城镇化、社会城镇化与两个系统的耦合协调度存在正相关关系,相关系数分别为0.976 4、0.983 4、0.789 2、0.987 5、0.968 3;从动态角度看,大同市各因素对两个系统耦合协调度的影响程度由高至低依次为经济城镇化、空间城镇化、社会城镇化、人口城镇化、旅游业发展水平。     

丝绸之路经济带旅游业发展与生态文明建设的耦合协调度研究

通过构建旅游业发展与生态文明建设评价指标体系,采用熵权法和综合评价法测算2009年、2012年、2015年和2018年丝绸之路经济带各省区旅游业发展与生态文明建设的综合评价指数,并运用耦合协调度模型及相对发展模型研究了丝绸之路经济带旅游业发展与生态文明建设的耦合协调关系.研究表明：1)研究期内丝绸之路经济带旅游业发展与生态文明建设的耦合协调发展区域差异明显,空间格局上呈现出东部、南部高于其他地区的差异特征,不平衡问题突出;2)旅游业发展与生态文明建设的耦合协调水平整体偏低,总体水平还处于濒临失调阶段,旅游业发展还需要更长时间与生态文明建设进行磨合;3)旅游业发展与生态文明建设的耦合协调发展过程具有一定稳定性,但处于边缘省区的协调发展水平易出现极化的现象,未来应重视旅游业与生态文明建设耦合协调质量的提高,促进旅游业与生态文明建设优质协调发展.     

长三角医疗服务与经济发展的时空分异及耦合协调

针对长三角医疗服务供给与经济发展的协调性，首先构建医疗服务供给水平和经济发展水平的综合评价指标体系；然后，基于长三角26个城市2010—2019年的面板数据，采用熵权TOPSIS法合成单一化指数，测算医疗服务供给水平和经济发展水平的地区差异性、空间相关性及两者间的相关性；最后，利用耦合协调度模型对医疗服务供给水平与经济发展水平的协调关系进行计算。结果表明：医疗服务供给水平总体的差异化程度小于经济发展水平；空间上均存在着正相关性，且经济发展水平的空间集聚现象更明显；两者的相关关系不显著；耦合协调关系显示杭州市、南京市、无锡市、宁波市、苏州市等协调度较高，宣城市、池州市、滁州市、安庆市等协调度较低，耦合协调性与地区经济发展状况关系较为直接。     

基于耦合模型的入境旅游流与区域经济协调发展研究——以广西为例

在构建入境旅游流和区域经济综合评价指标的基础上,利用耦合评价模型,以广西为例分析入境旅游流和区域经济两个系统的耦合协调发展关系。研究表明:广西入境旅游流和区域经济系统2001—2012年总体态势趋于良好,两者的耦合程度由低度耦合向高度耦合发展,协调度经历了从极度失调向初级协调的转变。区域经济发展水平已经成为入境旅游发展的重要基础和关键因素,如何进一步优化经济结构和促进经济发展来加快广西入境旅游的发展是目前应该重视的问题。     

区域旅游产业与城镇化建设耦合协调发展研究——以广西14个地级市为例

以广西14个地级市为研究对象,基于区域旅游产业与城镇化建设耦合协调发展作用机制,构建区域旅游产业与城镇化建设耦合协调发展评价指标体系,并运用熵权法、耦合协调度模型、面板聚类分析法对2010—2017年14个地级市旅游产业与城镇化建设耦合协调发展状况及空间差异进行测度与分析.结果表明,广西各地级市旅游产业与城镇化建设耦合协调发展水平变化特征基本稳定,大体呈上升趋势,但整体水平较低且空间差异明显.桂林市从濒临失调上升至初级协调,南宁市从濒临失调上升至勉强协调,柳州市、北海市、百色市、河池市从轻度失调上升至濒临失调,梧州市、防城港市、贵港市从中度失调上升至轻度失调,钦州市、玉林市、贺州市和崇左市从中度失调上升至濒临失调,来宾市从严重失调上升至轻度失调.可见,经济基础滞后和旅游产业发展基础滞后都将成为旅游产业与城镇化建设耦合协调发展的制约因素,提高广西各市旅游产业与城镇化建设耦合协调发展水平还需较长的发展周期.     

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。     

城市化效率与经济发展耦合协调性研究——以“丝绸之路经济带”中国段为例

采用熵权法、DEA和耦合协调度模型,分析了2005—2013年"丝绸之路经济带"中国段城市经济发展水平和城市化效率,以及两个系统的耦合协调度,从而得出研究区域耦合协调度的发展变化趋势、耦合协调类别和类型,同时探索其时空特征.研究认为:2005—2013年,研究区域经济发展类型虽以倒"U"型为主,但发展水平总体上升;"经济带"沿线中部和东部城市以规模报酬递减为主,西部以递增为主.经济发展和城市化效率的耦合协调度指数波动变化,耦合协调类别在勉强协调和初级协调间交替变化;协调类型为经济滞后型;其耦合协调空间特征呈现出从东到西高低相间分布的格局.最后,提出注重经济优化提升是研究区域实现可持续发展的必要前提.     

四川省旅游产业与区域经济耦合协调度研究

通过构建旅游产业与区域经济耦合协调度评价模型和评价指标体系,从时间序列的角度动态分析2004—2013年四川省旅游产业与区域经济系统的耦合协调发展状况.研究结果表明,旅游产业与区域经济系统之间存在着耦合关系,不同时期不同发展阶段,其耦合协调发展水平不同.2004—2013年间,四川省区域经济系统综合指数呈现出总体上升的态势,而旅游产业系统综合指数则呈现出波动上升的趋势,分别在2008年和2013年出现下降.二者耦合协调度则呈现出持续增长的上升趋势,2013年达到0.680 6,处于初级协调的耦合类型.     

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.