福建省第三产业发展的区域比较分析     

接栋正  汤小华 《云南地理环境研究》2006,18(5):89-93

运用可拓工程方法和主成分分析方法建立了福建省第三产业发展水平的综合评判物元模型。模型的输出结果表明：福建省各地区第三产业发展水平差距悬殊；综合关联度将第三产业发展水平划分成4个等级，单指标关联度则揭示了各地区第三产业发展的优、劣势。  相似文献   

河南省城区经济发展研究   总被引：4，自引：0，他引：4  

杨迅周  魏艳  刘沁武 《地域研究与开发》2006,25(2):39-42

文章首先介绍了城区经济的概念、特征和类型，在分析河南省城区经济发展状况的基础上，论述了该省城区经济的地位和作用，提出了河南省城区经济发展构想以及对策措施。  相似文献   

Retailing local food in the Scottish-English borders: A supply chain perspective     

B. Ilbery  D. Maye 《Geoforum》2006,37(3):352-367

Local food is championed as one alternative response to industrial systems of food production and supply. While advocacy for local food is high, there is a lack of empirical evidence about the actual shape and scale of such food supply chains, especially from a retail perspective. Using supply chain diagrams, this paper presents a summary of ‘new’ agro-food geographies for five different retail types—farm shops, butchers, caterers, specialist shops, supermarkets/department stores—that all source local food from suppliers in the Scottish-English borders. Presented as five separate ‘shopping trips’, the paper examines where, how and why retailers source local food. Results reveal the complex nature of local food systems, especially in terms of intra-sector competitive dynamics (with a notable tension between direct forms of retail and established (independent) retailers), links and overlaps with ‘normal’ food retail systems and elastic notions of the ‘local’. The paper also draws a key distinction between locally produced and locally supplied food products.  相似文献   

The Tornquist Zone, a north east inclining lithospheric transition at the south western margin of the Baltic Shield: Revealed through a nonlinear teleseismic tomographic inversion     

P. Voss  K. Mosegaard  S. Gregersen  TOR Working Group 《Tectonophysics》2006,416(1-4):151

From July 1996 to August 1997 the TOR project operated 130 seismographs in North Germany, Denmark and South Sweden, with the aim of collecting signals from local, regional and teleseismic earthquakes. This data set is particularly interesting since the seismic antenna crosses the most significant geological boundary in Europe, the Tornquist Zone, which in the northern part is the border between the Baltic Shield and the younger European lithosphere. Previous studies have shown significant physical changes in the crust and upper mantle across this transition zone, including two independent teleseismic tomographic studies of the TOR data set. But these two studies disagree on the orientation of the slope of the transition. Both studies used an iterative linearized inversion method. We will in this work Preprint submitted to Elsevier Science 27 July 2005 present an inversion based on Bayesian statistics, where the solution space is examined in order to study a very large number of tomographic solutions and to examine the solution uniqueness and uncertainty. The method is applied to measurements of 3345 relative teleseismic P-phase travel times from 48 teleseismic earthquakes with good azimuthal coverage with respect to the great circle arc of the TOR array. We find the lithospheric transition to be a north east inclination of around 30° to 45° off vertical.  相似文献   

高新技术产业集聚的城市化响应与反馈机制研究   总被引：1，自引：0，他引：1  

毛广雄 《世界地理研究》2006,15(1):9-15

高新技术产业集聚与城市化存在互动机制。一方面,高新技术产业结构效应影响了城市化动力机制,集聚效应则促进了城市外部经济的发展,使城市化表现出不同的模式特征和地域特征;另一方面,城市化促进了高新技术发展所需要素资源的聚集与流动,为高新技术产业集聚提供人力资本保障,还为高新技术企业提供创新的源动力。文章以苏州高新区的高新技术产业发展和城市化互动关系佐证了这一理论,并认为建立二者之间切实可行的调控模式是当务之急。  相似文献   

美国五大湖工业区产业结构演变的城市化响应机理辨析     

高相铎  李诚固 《世界地理研究》2006,15(1):71-77

城市化对产业结构升级的响应已成为新时期城市化推进的主要目标和产业结构优化的重要途径。美国五大湖工业区的成功转型所体现出来的工业型区域产业结构演变城市化响应的发展规律将为东北老工业基地的改造提供有益的借鉴与启示。文章分析了美国五大湖工业区产业结构演变城市化响应的过程,并根据其影响机制,得出了东北老工业基地可以从中获得的启示和可借鉴的经验,为东北老工业基地的改造提出较为符合实际的发展对策。  相似文献   

Bayesian Spatial Modelling of Gamma Ray Count Data     

Daniela Leonte  David J. Nott 《Mathematical Geology》2006,38(2):135-154

Gamma ray logging is a method routinely employed by geophysicists and environmental engineers in site geology evaluations. Modelling of gamma ray data from individual boreholes assists in the local identification of major lithological changes; modelling these data from a network of boreholes assists with lithological mapping and spatial stratigraphic correlation. In this paper we employ Bayesian spatial partition models to analyse gamma ray data spatially. In particular, a spatial partition is defined via a Voronoi tessellation and the mean intensity is assumed constant in each cell of the partition. The number of vertices generating the tessellation as well as the locations of vertices are assumed unknown, and uncertainty about these quantities is described via a hierarchical prior distribution. We describe the advantages of the spatial partition modelling approach in the context of smoothing gamma ray count data and describe an implementation that may be extended to the fitting of a more general model than a constant mean within each cell of the partition. As an illustration of the methodology we consider a data set collected from a network of eight boreholes, which is part of a geophysical study to assist in mapping the lithology of a site. Gamma ray logs are linked with geological information from cores and the spatial analysis of log data assists with predicting the lithology at unsampled locations.  相似文献   

宁夏产业结构演进与经济增长系统研究   总被引：6，自引：5，他引：6  

刘小鹏  王亚娟  王永洁  王联兵 《干旱区地理》2006,29(6):915-922

产业结构的演进与升级一定程度上反映了区域经济的发展阶段与发展能力。以1978-2003年的统计数据为基础,系统研究了宁夏产业结构变迁与区域经济发展的关系。研究结果表明:(1)宁夏产业结构的变化符合产业结构变迁的一般规律,但产业结构高度化水平依然低下;(2)宁夏产业结构变迁的空间集聚效应明显;(3)宁夏产业结构演进对经济增长的影响形成产业结构偏离为正,竞争力偏离份额为负型、产业结构偏离为正,竞争力偏离份额为正型和产业结构偏离为负,竞争力偏离份额为正型三种类型;(4)产业结构变迁对各地区经济增长的影响差异较大。研究指出,在西部大开发和区域经济一体化进程中,以及在国家和地区产业政策调整的背景下,建立产业协调与分工合作机制,发展特色优势产业,推进重点地带布局开发,形成区域性“群落型”经济优势,成为新时期宁夏产业结构调整的战略选择。  相似文献   

Organizational Dynamics of the U.S. Logistics Industry: An Economic Geography Perspective*     

Yuko Aoyama  Samuel Ratick  Guido Schwarz 《The Professional geographer》2006,58(3):327-340

Although the logistics industry provides critical services to all sectors of the economy, few studies exist in economic geography that examine and explain the organizational dynamics of this industry. This article highlights the significance of the logistics industry in contemporary industrialization and argues that an enriched understanding of the interaction between technology and space can be achieved by examining the evolution of an industry that plays a central role in the contemporary economy. We focus on dimensions that are identified as particularly important: organizational, geographic, and risk and security.  相似文献   

基于PGNAA技术在线分析系统的应用     

何伶俐  庹先国  穆克亮  曾旖  李向阳 《物探化探计算技术》2005,27(4):317-320

近年来,随着核探测与分析技术的日趋成熟,使复杂γ谱的获取、解析达到了在线测量的要求,从而使在线PGNAA(中子活化瞬发γ射线分析)技术获得了飞速的发展。它可对一些工业生产过程中的全物料进行在线测量,其分析精度、可靠性等皆能满足在线元素含量分析的需要,因而显示出巨大的发展潜力和广阔的市场前景。这里介绍了基于PGNAA技术的在线分析系统的基本原理、组成和发展,并概述了它在水泥、煤炭等行业的应用情况。  相似文献