Computing the fuzzy topological relations of spatial objects based on induced fuzzy topology

For modeling the topological relations between spatial objects, the concepts of a bound on the intersection of the boundary and interior, and the boundary and exterior are defined in this paper based on the newly developed computational fuzzy topology. Furthermore, the qualitative measures for the intersections are specified based on the α‐cut induced fuzzy topology, which are (A_α∧?A)(x)<1?α and ((A^c)_α∧?A)(x)<1?α. In other words, the intersection of the interior and boundary or boundary and exterior are always bounded by 1?α, where α is a value of a level cutting. Specifically, the following areas are covered: (a) the homeomorphic invariants of the fuzzy topology; (b) a definition of the connectivity of the newly developed fuzzy topology; (c) a model of the fuzzy topological relations between simple fuzzy regions in GIS; and (d) the quantitative values of topological relations can be calculated.     

数字海淀基础信息平台的集成

城市空间信息基础设施是支撑数字城市的核心。本文在数字海淀基础平台实践的基础上 ,介绍面向城市管理类型的空间信息集成。同时 ,简要介绍在平台建立中涉及到的相关集成技术 ,包括海量数字影像信息压缩、线划图形处理以及基于特征的多源信息复合。     

全国1：10000基础地理信息数据库整合升级总体设计

1：10000数据库是我国省级基础地理信息资源的主要组成部分,是构建数字中国的重要内容。本文介绍了全国1：10000数据库整合升级工程的总体技术设计,根据全国1：10000数据库建设与更新的实际情况,对其存在的问题进行了分析,并重点阐述了整合处理的内容、总体思路、技术方法以及数据库优化升级技术方案等。     

产品数据管理系统与CAD系统集成的关键技术

就产品数据管理PDM系统与CAD系统集成的方式与接口功能等关键技术进行了论述。分析了PDM CAD松散集成与紧密集成两种方式的基本原理 ,指出采用松散集成方式的优越性 ;采用远程进程调用 功能调用的方法 ,实现PDM与CAD间数据通信和文件交换 ,在此基础上 ,对PDM系统与CAD系统集成的接口功能———视图 模型操作功能、主图处理功能、工程图处理功能和产品结构处理的工作原理进行了详细地论述 ,使得PDM系统中的产品结构树和CAD软件装配树的数据结构达到一致。     

Work segmentation in the Norwegian salmon industry: The application of segmented labor market theory to work migrants on the island community of Frøya,Norway

Work migration is increasing in Norway, particularly in the production sector of the aquaculture industry. This sector is growing rapidly and manual labor needed in the industry is consistently being sought through Eastern European networks and temp-agencies. This article looks at the island community of Frøya, in Sør Trøndelag in Norway, where around 20% of the population is of foreign descent, and where stakeholders in the production line experience a lack of upward mobility due to their lack of Norwegian language skills, and the insecure nature of their employment status. The capacity of the island community to adapt to a 3-fold increase in aquaculture production will depend on this segment of society as well being able to adjust, and on their inclusiveness in society. Based on a stakeholder driven workshop looking at the perceptions of a set of foreign workers in the aquaculture industry,segmented labor market theory was applied to the experience of the workers. The priority issues of the migrant population of Frøya involved in the aquaculture industry was also explained, and their wish for upward mobility and job security, as well as inclusiveness in society elaborated upon. This upward mobility, however, would lead to the bottom segment of the labor market on Frøya – the aquaculture production line – to have to be filled with another lower segment group of workers.     

基于多尺度、多图幅地理空间基础的输电信息系统的研究与实践

正确、及时、全面地获取输电网络的各种资源信息,并加以提炼、分析,实现输电管理部门间的协同工作和信息共享,为管理者和决策者提供辅助决策依据,从而保障输电网络安全、高效地运行,提高企业的综合经济效益,降低电网运行维护中的损耗[1]。本文提出了采用C/S+B/S两种开发模式相结合的混合体系结构作为系统的总体解决方案。以ESR I公司的ArcG IS系列产品作为基础的GIS开发系统,以.NET的核心语言C#作为系统的最终开发语言。同时,功能强大的数据库软件Oracle和空间数据库引擎ArcSDE为系统统一协调、并发处理以及共享分布各种信息提供了可靠的保障。该系统具有界面友好、方便实用、安全稳定、兼容性强、伸缩性强和可扩展性强等优点。该系统已推广和应用到部分地市,具有极其广阔的推广应用前景。     

全国边海防地区基础地质遥感调查

为满足全国边海防地区经济建设与国防建设对地质信息的需求,自2011年起,中国地质调查局国土资源航空物探遥感中心(简称航遥中心)联合全国相关地调中心与省级地质调查研究院、行业地质调查部门、高等院校和边海防地区国防建设应用与研究等24家单位,利用遥感技术快速获取了东北、西北、西南和南海三沙等边海防重点地区95万km²基础地质、工程地质、水文地质、矿产地质以及地质灾害等9类地质专题信息,编制了32类1:5万与1:25万服务于经济建设和国防建设的地质应用专题图件,形成了边海防地区遥感地质调查技术体系、共享数据库和应用成果,解决了边海防地区地质调查工作难点问题,创新了军民融合地质调查方式。该文围绕“全国边海防地区基础地质遥感调查”的目标任务,阐述了实施的技术路线和取得的成果,并对未来的工作进行了展望。     

GPS/伪卫星组合选址优化的一种思路

针对露天矿区GPS几何图形条件与可见卫星个数易受地形影响、定位不佳的情况,利用GPS/伪卫星组合定位技术提高定位精度。阐述了GPS定位精度因子的概念,并进行了相关公式的推导。以某矿区接收的GPS信息为实验数据,利用Matlab仿真定量分析出加入伪卫星后对定位精度的影响;并提出以观测时间、高度角、方位角为自变量的三维选址优化模型,为伪卫星选址优化提供了直观的表达方法。     

一种本体驱动的空间信息集成方法

地理空间数据集成是地理信息科学研究的一个重要内容。本文引入地理本体的思想,提出了基于地理本体的空间数据的组织方法,构建了基于本体的空间数据集成框架。本文运用上述方法,通过对烟草地理本体的建模,建立了客观反映烟草地理实体各个层次体系的概念模型,再根据烟草概念和已有地理数据集之间的映射关系,构建基于地理本体的烟草空间数据库,从而实现数字烟草多源空间数据的一体化集成与管理,以及数字烟草空间信息的共享与互操作,达到了很好的应用效果。     

Between social and spatial convergence and divergence: an exploration into the political geography of European contact areas

The European continent, the motherland of nationalism, and the part of the world where political borders and different territorial and cultural identities are mostly interrelated, is now facing new challenges regarding how best to represent its numerous interests within one system. With the increase of international integration European countries began to devote greater attention to the development problems of their border areas that had to be helped to undertake certain functions in the international integration process. The fostering of a more balanced regional development also resulted in a strengthening of regional characteristics, which the new model could no longer ignore. Regional characteristics in turn have always been preserved in Europe by persistent historical and cultural elements of ethnic and linguistic variety. Therefore, it is not surprising that the process of European integration based on the new regional development model was accompanied by a parallel process of ethnic or regional awakening of minorities and other local communities. The key question for contemporary European (though of course this is not limited to Europe) political geography is, then, how the process summarised under the twin labels of social convergence and deterritorialisation will effect the persistent maintenance of regional identities and the corresponding divergence of regional spaces. Or, in other words: is the ‘unity in diversity’ European programme ever practicable and exportable on a world-wide scale or are we to be absorbed by a new global ‘melting pot’?