中国可持续发展信息共享系统研究与开发

信息共享是当前研究的热点。首先提出构建中国可持续发展信息共享系统,以充分利用不同领域部门所收集到的海量数据,实现基于网络的信息共享与综合分析;随后介绍了系统的体系结构,提出系统由信息共享政策、法规和标准、可持续发展信息共享数据生产以及信息共享服务平台三大部分构成;最后详细介绍了信息共享平台的建设方案,并提出下一步系统建设的目标。     

基于地理空间概念的地理元数据组织管理研究

数据共享一直是大型GIS应用的瓶颈问题。为了能给用户提供一个统一的地理空间的概念和地理数据访问方式,该文从地理元数据在共享平台中的重要作用入手,分析了地理空间的时空特性、绝对空间和相对空间、多尺度特征,探讨了共享平台设计的关键技术：空间数学基础,多级格网的Morton编码,元数据的多维数据模型组织,地理数据评价模型。在技术实现上采和分布式数据库系统的模式结构,并分析了地理数据注册、更新和查询方式。     

Problem of the Rotating Magnetoconvection in Variously Stratified Fluid Layer Revisited

The linear magnetoconvection in the rotating uniformly as well as non-uniformly stratified horizontal layer with azimuthal magnetic field is investigated for the various mechanical and electrical boundary conditions and especially, for various values of Roberts number. The developed diffusive perturbations (modes) are strongly influenced not only by the mentioned properties of boundaries but also by complicated coupling of viscous, thermal and magnetic diffusive processes. The mean electromotive force produced by developed hydromagnetic instabilities is also investigated to determine the hydromagnetic processes which are appropriate for -effect. The presented paper is an unification of hitherto published results of the authors and gives a short survey of many developments of corresponding model by Soward (1979).     

Changing bodies, spaces, places and politics: Feminist geography at the University of Waikato

Abstract: ‘Place matters’ in the production of knowledge. This article examines the production of feminist geographical knowledge at a particular place – the Department of Geography, Tourism and Environmental Planning at the University of Waikato. Feminist geography at Waikato represents a nexus of international, national, regional, and local politics. It represents the efforts, personalities, political and personal motivations of particular individuals, at particular times, in a particular space. While international trends are important, they can also mask the unfolding of events in different ways in ‘other’ places.     

地理空间的存在

阐述了关于地理信息科学的个人观点：地理信息科学是一门研究人、机、地关系及其相互作用的科学，它以地理空间为其核心范畴。在人一机一地交互系统观点下辩证论述了地理空间的存在，以期获得一个关于地理空间概念的整体理解。     

红地球葡萄栽培的气候适应性分析

美国红地球葡萄(RedGlobe)，是我国近几年引进的葡萄新品种，其对气象条件的要求较高。本文分别通过温度、湿度、光照等几个方面分析了红地球葡萄生长的适宜气象条件，以便于今后在葡萄的生产过程中趋利避害。     

北京市大气细粒子的质量浓度特征研究

大气能见度的降低是当今国际上比较突出的城市环境问题。北京近年的监测结果表明 ,大气中通过消光作用使大气能见度下降的气溶胶细粒子的污染程度呈现上升趋势。从 2 0 0 1年对北京市气溶胶细粒子 (空气动力学直径小于 2 .5μm的粒子 ) 4个季节的采样监测结果分析 (有效采样天数为 50d)得出 ,北京市细粒子质量浓度年平均值已超过美国国家标准的 7倍以上。研究发现细粒子的质量浓度不仅与环境条件有关 ,而且与气象条件也有着密切的关系。文中以细粒子的观测数据为基础 ,结合当时的气象条件进行细粒子浓度与气象条件定量关系的研究     

The symbolic order of objects and the frame of geographical action: An analysis of the modes and effects of categorisation of the geographical world as applied to the mountains in the West

Societies cope with their geographical environment with the help of objects and categories of objects. Objects are cognitive symbols enabling societies to come to terms with the incertainties and complexity of the real. This text begins by presenting processes of objectivation and of categorisation of geographical reality. Then, it analyses how far categorisation of objects influences the practice and the transformation of corresponding reality. Coping with categorisation and transformation, it thus circumscribes the interactions between language, cognition and action by which geographical entities are transformed. It illustrates this thesis with the historical transformation of modes of apprehension of the mountains in the West and the parallel transformation of their usage and the modes of planning applied to them. This revised version was published online in July 2006 with corrections to the Cover Date.     

重庆奉节天坑地缝喀斯特地质遗迹及发育演化

小寨天坑、天井峡地缝式喀斯特峡谷位于重庆市奉节县南部深切割峰丛谷地区,发育在一个流域面积280km2,落差1600m的喀斯特水文系统中,与巨大的地下河相连。前者深662m,口径626m,容积119×106m3,是目前世界上规模最大的天坑;后者长6162m,最大深度229m,最小宽度1m,为世界上罕见的地缝式喀斯特峡谷,具有很高的美学观赏价值和科研价值。天坑、地缝的形成条件,需要有连续沉积厚度巨大的碳酸盐岩层和平缓的岩层产状、高强度水动力作用地下河的存在、地表深切和地表地下排水基准面的长期大幅度下降、厚度相当大的包气带、地表与地下喀斯特作用协同等。天坑、地缝主要形成于峡谷期(三峡期),经历了3个演化阶段,即宽缓河流谷地阶段、峡谷及天坑地缝形成阶段和现代河谷持续深切阶段。