Voronoi图用于确定城市经济影响区域的空间组织

确定城市经济影响区域的空间组织是一项十分复杂的工作，在区域规划和城市规划中有着重要的理论和实际意义。目前，通常是利用数理统计的方法进行城市的分级，并以此来确定区域中的中心城市，未充分考虑区域空间中城市之间的竞争关系；确定城市经济影响区域时，往往采用断裂点公式来划定两两城市之间的分界线，当城市的数量较多时，这种方法有困难且工作十分繁杂。本研究提出可以用Voronoi图来确定各级城市的空间影响区，并利用Voronoi多边形邻居关系的性质来确定城市体系中不同等级城市之间的空间组织关系、     

对口支援:科技辐射促进同步发展

随着全国经济社会的发展，区域经济合作工作越来越受到各级领导的重视，受到社会各界的关注。作为科技最发达的城市之一，北京将大量的科技能力、科技人才和科技成果辐射到全国的各个省市、各个民族地区，促进各地区和民族的快速、同步发展，是北京不容推卸的义务。北京市科委已经把此项工作列入重要的工作议程。北京市科委主要负责对口支援内蒙古自治区、西藏自治区拉萨市和湖北巴东县的工作。     

发掘自身优势 发展商务区域品牌 发挥区域中心城市作用——我为汕头打造区域中心城市献一策

粤东四市地缘相近、人缘相亲、文缘相通、商缘相联，具有许多共性，作为该区域政治、经济、文化中心的汕头，解放前至上世纪60年代一直是广东第二大城市，粤东也历来是省内较为发达的地区。然而经过多年的变迁，目前汕头区域中心的地位和作用被削弱，同时粤东地区由于缺少“中心城市”的带动，区内各市发展也相对缓慢。面对发展瓶颈，粤东各市政府和人民纷纷提出思考：第一、由谁来做区域中心城市？第二、如何打造区域中心城市？     

农村阻击战

保卫农村 自国家禁止传销以来，虽然各级管理部门加大了查处传销的力度，但是传销活动仍然屡禁不止。而且许多在城市已无法立足的传销分子，开始将传销活动区域从城市向郊区或农村转移，毒害善良而信息闭塞的农民。     

人力资本空间错配对城市创新水平的影响研究——基于空间视角的考察

促进人口红利向人力资本红利转变是深入创新驱动战略的重要基础。基于2004—2019年我国285个城市面板数据测算人力资本空间错配指数，考察我国市域人力资本空间配置状况，并结合空间杜宾模型探讨其对城市创新水平的影响。研究发现：目前我国仍存在人力资本空间错配问题，其中东部地区配置不足，中部、西部地区配置过度。总体来看，人力资本空间错配与城市创新水平之间存在“倒U型”关系。从溢出视角看，相比于本地人力资本空间配置状况，我国城市创新水平受邻近地区的影响更大；该溢出效应具有明显的区域异质性，即东部、中部地区为“倒U型”,西部地区显著为负。因此，优化人力资本空间配置，畅通地区间经济循环，能更好地推动创新和区域协调发展。     

四川省主要中心城市竞争力比较分析

四川地处我国西部地区，经济发展水平落后，城市化水平较低，产业升级和产品换代缓慢，特别是主要城市的综合实力较弱，对区域的带动作用不强，直接影响全省经济发展,文章运用因子分析法对四川18个地级市的城市竞争力进行分析评价，进而将城市分为4类，分别提出了各类城市的发展方向.     

中部经济欠发达地区城市化阻力因素及对策研究

以河南信阳为例，在全面调查分析区域社会经济结构的基础上，运用发展经济学、城市经济学和生态学等理论，紧紧围绕发展这个主题，从研究中部经济欠发达地区城市(镇)化特征入手，阐明了中部地区农村城镇化的阻力因素及其作用机制，探讨了加快中部农业经济地区城镇化发展和社会经济发展的战略性对策及发动机制．对中部地区全面建设小康社会具有一定的理论和实践价值。     

加快西部旅游区城市化进程,促进旅游业的发展

旅游开发是当前西部大开发的重要内容。城市因是旅游开发的主要客源地、目的地和依托基地而成为区域旅游系统的核心。通过充分调研分析，认为加快西部旅游区城市化进程，对促进旅游业的发展和西部大开发均具有重要意义，而目前西部地区城市化的滞后严重制约了旅游开发。提出了必须从调整城市发展方针、适度加快大城市建设、有效保护自然生态环境、调整城市发展人口政策、加强城市形象建设以及加强东西部城市合作等方面着眼，加快西部地区、尤其是旅游区城市化进程，以此为先导，推进西部旅游开发和区域可持续发展。     

基于数据包络分析模型的新疆城市社区治理效率分析

社区作为城市的基层单位，治理成效直接关系到新疆基层社会的稳定和发展。开展新疆这个多民族聚居区域的城市社区治理绩效研究，对丰富和发展中国特色的社区治理理论体系和社区发展模式，创新党的基层治理理论意义重大。本研究构建了社区治理数据包络分析模型，从社会流动性、社会新增就业状况、社会服务水平等维度分析新疆整体城市社区的治理效率，并通过比较新疆不同地区城市社区治理效率，发现新疆城市社区治理效率在地区间的也存在差异，且同一地区内各县市区之间也存在差异。     

城市门户地区街景设计的思考与实践——以苏州工业园区东环路街景规划为例

当前，我国许多城市的空间规模快速扩大，原先的城市门户地区渐渐融入城市中心区域。本文结合规划实践，针对目前大多数街景规划的偏重于表皮设计的现状，研究了规划的理念、思路和内容，并对街景规划的本质和设计与长效管理相结合的问题进行探讨。     

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.     

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…     

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.     

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。     

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.     

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

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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     

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