基于时空索引的校园地理信息系统构建

时空索引技术是近年来地理信息系统领域的研究热点,如何有机结合空间和时间信息,提高查询效率是重中之重。本文构建了飘浮模型的时空索引机制,以三层数据查询结构保证时空的有效结合。同时,创新的采用影像与矢量数据配准的方式共同作为数据源,降低系统成本,增加直观效果。实践表明该索引机制可以有效提高查询效率,基于该模型的校园地理信息平台运行效果良好。     

Problems on the application of geographic information systems to urban environmental management

Geographic information systems(GIS)are a widely used tool in urban planning and management.More and more cities and deecision-makers require its attributes of promptness,precision and visualization.But the application of GIS in urban environmental management is still a new field and relevant researches are getting on tardily.As a subsystem of GIS,an urban environmental management geographic information system(UEMGIS0should be a complex multi-discipline and multi-objective tool to perform quantitative multi-dimension analysis and to transfer the results into an expression legible to an ordinary user.It should be a dynamic system of prompt functions based on upgradable databases,and be composed of many subsystems respectively specialized in items about water,air,waste and noise as well as relative standards and regulations.However, existing UEMGISs mostly rely on the basic GIS too much to design the actual requirements of applications and managements in themselves,and the unavailability of sufficient fundamental data has retarded their improvement.In the design of a UEMGIS,the standardization of data classification should be taken into consideration to make the data exchangeable and shareable among its subsystems and within every subsystemj,and the applicable error limits for input data should be defined in accordance with the user s required precision of data out.Data acquisition can be easy and quick if remote sensing,global positioning system(GPS)and other technologies are combined with GIS,Rapidly progressing information fechnologies have been giving a bright prospect for the melioration of UEMGIS that will have great potential and wide application in environmental conservation.     

基于地理本体的地理时空信息表达研究

本文就利用地理本体的强大的知识表达能力来表达地理时空信息的语义关系和时空关系进行了探讨,同时使用基于本体的多维地理时空信息的分类方法和描述逻辑语言OWL在Protege本体构建工具中构建了地理时空信息本体。     

中国大陆地理信息系统的发展

自1978年以来，中国大陆地理信息系统(GIS)经历了准备、起步、发展、形成产业化几个阶段，国产多个基础性GIS软件产品不断成熟，市场占有率不断提高。进入21世纪，中国大陆的地理信息系统产业初步形成。根据中国大陆期刊网的论文检索，反映了GIS理论研究不断发展和GIS应用领域逐渐扩大。     

A multi-Agent system architecture for geographic information gathering

INTRODUCTION With the rapid increase of geographic information on the Internet, WWW (World Wide Web) contains a great deal of information that can bgeo-referenced. The National Academy of Sciences oAmerica estimates that 80 percent of the informationon the Web is composed of spatial information thaincludes coordinate information, such as longitudelatitude and their various kinds of projections, mailingaddresses that can be geo-coded, relative distance anddirection information. W…     

A multi-Agent system architecture for geographic information gathering

World Wide Web(WWW)is a vast repository of information,including a great deal of geographic information.But the location and retrieval of geographic information will require a significant amount of time and effort. In addition,different users usually have different views and interests in the same information. To resolve such problems,this paper first proposed a model of geographic information gathering based on multi-Agent(MA)architecture. Then based on this model,we construct a prototype system with GML(Geography Markup Language). This system consists of three tiers-Client,Web Server and Data Resource. Finally,we expatiate on the process of Web Server.     

Identifying didactic knowledge: An empirical study of the educationally critical aspects of learning about information systems

This paper backgrounds and illustrates an approach to researching didactic knowledge. Underlying the approach are some of the frameworks developed from the student learning research. Based on these frameworks the experience of learning about a particular phenomenon is theorised as having educationally critical aspects. Without addressing these aspects in learning experiences, students are highly unlikely to achieve the target understanding desired by the teacher. The approach developed to research educationally critical aspects compares scholarly and student experiences of learning about a phenomenon using the analytical framework of a structure of awareness. An application of the approach is reported in the form of a phenomenographic study which researched didactic knowledge about the concept of an information system (IS). Multiple, previously unreported, educationally critical aspects of learning about the concept of an IS were identified. Some implications of this finding for the design of IS undergraduate curricula, textbooks, teaching strategies and learning tasks are proposed. Finally, the research approach is promoted as a means to investigate didactic knowledge about other phenomena.     

基于地理信息的最短交通线路启发式搜索算法

文章通过分析以往算法在公交线路最短倒换路径查询方面的盲目性,提出了一种基于地理信息的启发式搜索算法,并对该算法做了一些改进。     

略论信息素质教育与高校图书馆读者工作

本文对大学生信息素质的现状及实施信息素质教育的必要性和对大学生进行信息素质教育的途径进行了粗浅的分析和探讨。     

信息素质教育在图书馆中存在的问题及对策研究

介绍了“信息素质”的主要内容,探讨了大学生信息素质教育的现状,论述了高校图书馆开展信息素质教育的途径。     

地理信息系统地址自动匹配

地址自动匹配算法是利用Oracle空间数据库实现快速地将以自然语言描述的地址信息定位到含有基础POI的地图上,解决了以前传统的MIS数据库中黄页信息的地址和GIS数据难以互相匹配的问题。高效的地址模糊与智能匹配算法,为拓展GIS技术的应用广度、深度提供了关键的技术支持。     

网络环境下大学生信息素质教育的对策

在当今以网络信息化为特征的时代,信息素质教育是大学生素质教育的一个重要组成部分。文章从阐述信息素质、信息素质教育的概念入手,在分析大学生信息素质状况的基础上,提出了网络环境下加强大学生信息素质教育的途径和方法。     

Educational Computing:

No abstract available for this article.     

论高校图书馆与大学生信息素质教育

文章针对高校大学生信息素质的现状,以及高校图书馆开展信息素质教育的可行性,阐述了高校图书馆在大学生信息素质教育中的作用和对大学生进行信息素质教育的应对措施。     

信息时代大学师生关系的嬗变及走向

师生关系是学校中最重要的社会关系 ,也是教育研究中的重要范畴。信息时代 ,大学教育理念、模式、方式和方法都发生了根本性变革 ,师生关系也因此成为交互主体的共时性、主体间性交往关系 ,大学教育逐步走向人性化、个性化、信息化和学习化     

Educational psychology: Some questions of status

This article provides a synoptic account of historically changing conceptions and practices of social justice in Australian higher education policy. It maps the changes in this policy arena, beginning with the period following the Second World War and concluding with an analysis of the most recent policy proposals of the Bradley Review. Concurrently, it explores the different meanings ascribed to social justice, equity and social inclusion over this time span and what these have meant and will mean for students, particularly those from low socio-economic backgrounds. It concludes that a relational understanding of social justice – ‘recognitive justice’ – is yet to inform student equity policy in higher education, although this is now what is required in the context of the planned shift from mass to universal participation.     

Strategic process in universities: methodology development and information systems support

This paper aims to stress the potential use of executive support systems (ESS) in the formulation of university objectives and strategies. A strategic planning methodology based on different university experiences is proposed, along with an ESS that we have designed and developed to support the strategic process. We present the methodology and show how to put it into practice by using our application. Finally, we discuss some results obtained at the University of Las Palmas de Gran Canaria, as well as the major obstacles and resistance raised both to the strategic planning and to the computerization of the process     

The systematic measurement of the perceived characteristics of information technologies I: Microcomputers as innovations

This study reports the results of the development of a test designed to measure the perceived characteristics of microcomputers as innovations. A three factor solution was obtained, with factors measuring complexity, compatibility, and trialability/observability. No factors emerged measuring relative advantage or perceived expense. All of the defined factors had acceptable levels of reliability and validity checks confirmed that the developed scales had construct validity. Issues relating to future research, model and theory building in the diffusion process, and longitudinal studies were discussed.     

Fragmented spaces in the urban landscape: A socio-spatial analysis of educational supply in the city of Madrid

The geography of school choice critically shapes families’ educational opportunities. Residential segregation, social inequalities and the educational marketplace interact in complex ways and produce spatialised educational opportunities for families. This paper analyses the link between these dimensions and how they structure families’ educational opportunities in the city of Madrid. Based on several administrative datasets that capture students’ residential location, their socio-economic position, the schools they attend and the characteristics of school supply, our analysis reveals the uneven spatial distribution of the different school modalities in Madrid, where advantaged families and neighbourhoods have more diversified and socio-economically homogenous nearby schooling options. The results also depict the way the city is spatially divided along a continuum of ‘privileged’ residential and educational assets. The paper reflects on how reforms expanding school choice and diversification of the educational market undertaken by the regional government may have increased the link between residential and school segregation.     

论地理信息系统及其发展展望

本首先离地理信息系统（GIS）的定义、性质、特征和组成；然后回顾了在技术驱动和应用驱动下国际地理信息系统发展的四个阶段的特征，以及我国地理信息系统的发展历程；最后展望了地理信息系统的未来前景－开放式GIS、3S集成和地球信息科学。