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1.
Abstract

In the past 10 years, geographic information systems (GIS) have been widely used in urban and regional planning in the developed countries in Australia, North America and Europe. However, the use of GIS in urban and regional planning in the developing countries is limited and still at an early stage of development. This paper examines the current use of GIS in urban and regional planning in the developing countries in Asia. The major hindrances in the use of GIS in the developing countries is related not so much to the technology of GIS but more to data availability, leadership, organization structure and planning practice. For GIS to be more useful to urban and regional planning in the developing countries the development of a sustainable strategy in developing GIS and staff training is needed. International assistance agencies and GIS software companies can play an active role in making GIS available and usable to the planners in the developing countries.  相似文献   

2.
Abstract

The planning and establishment of a geographical information system (GIS) relates to its context and intended use. GIS are a specialized type of information system, typically dealing with spatial data. This paper explores the environment of an envisaged GIS; the information utilization system and the wider object system. The planning and design of a GIS go beyond technical issues; they also have to take behavioural and organizational aspects of the utilization of information into account and contribute to a process of organizational development The paper is in two parts. The first (§ 2) explores salient aspects in the planning and design process, the second ( § 3) suggests some guidance in this task. The suggested approach of strategic choice in planning and establishing a GIS is designed to cope with the prevailing uncertainties in this planning process. It distinguishes between those decisions which have to be taken at once and choices which may be left open for the future.  相似文献   

3.
Abstract

The incorporation of the technology of geographic information systems (GIS) into a wide range of planning decisions makes it important that the visually handicapped have access to GIS-based map products to participate more fully in community decision making. Fortunately, GIS contain many procedures useful to the design of tactile maps, including changes of scale and simplification. Developing research opportunities are outlined within the context of the general problem. Tactile maps using microcapsule paper can be produced quickly, but they must be tested using visually handicapped subjects to ensure that suitable symbolization and specifications are developed.  相似文献   

4.
Abstract

An intelligent expert system shell for the development of knowledge-based geographical information systems (GIS) is examined in this two-part article. Basic concepts and the overall architecture of the shell are discussed in the present part. Fuzzy logic and expert systems technology are demonstrated to be appropriate methods for approximating human reasoning and enhancing the level of intelligence in GIS. The shell can be employed as an effective and efficient tool for developing knowledge-based GIS.  相似文献   

5.
Abstract

A geographical information system (GIS) is used as an important tool in increasing the efficiency of planning and decision making, leading to a more equitable distribution of wealth and welfare. However, scarce financial and technical resources in developing countries require that a flexible approach must be adopted when developing a GIS. In Saudi Arabia, where the planning and funding decisions relating to municipal services are taken centrally by the Ministry of Municipal and Rural Affairs (MOMRA) and implemented through its regional and local branches and municipalities, the setting up of a GIS is considered essential. An incremental method was chosen for establishing a GIS in the municipal sector by means of several phases. This paper discusses the main steps and strategies for each phase, the level of achievement since the implementation of the Municipal Information System (MIS) in 1983, and current views of the system's future. It was concluded that an incremental implementation of a MIS seems to be a practical and effective solution. However, weaknesses and problems, such as the long period of implementation and a lack of co-ordination between different agencies and offices, must be resolved to ensure ultimate success of such an approach.  相似文献   

6.
ABSTRACT

The establishment of the National Key Centre for Social Applications of Geographical Information Systems (GIS) in 1995, under the directorship of Professor Graeme Hugo, was a turning point in the use of GIS in Australia. The field of GIS, previously dominated by environmental applications, now broadened its focus to include populations, services and the interactions between people and the environment. Social applications of GIS offered a unique opportunity to make service planning, reporting, funding allocations and research both smarter and fairer. Geography and geographic relationships as implemented in GIS became the integrating platform for social spatial information, invigorating social research, planning and policy. A key strength of this approach, recognised by Professor Hugo, was the ability to ‘put people back into the planning process’. Further to being an integrating platform, GIS also offered the ability to generate new information and knowledge, which could facilitate evidence-based decision making. This paper focuses in particular on providing a written record of the development of the Accessibility/Remoteness Index of Australia (ARIA) suite of spatial accessibility indices. The lasting legacy and continued relevance of this work in social applications of GIS is also reviewed in this paper, with reference to key examples of how social research and planning in Australia have been made both smarter and fairer through the contributions of Professor Hugo and his team.  相似文献   

7.
Abstract

Abstract This paper provides an overview of developments and applications of geographical information systems (GIS) in North America over the past 20 years, together with some indications of lessons learned and prospects for the future. Most developments in this field have been confined to a small number of sectors, including forestry, land registry, transport and facility planning, civil engineering, agriculture and environment, although progress has been variable. The wider use of GIS has been (and will probably continue to be) inhibited by a number of factors, such as lack of digital base mapping, limited digital data, unawareness among potential users and resistance to new technology, coverage of data, assessment of costs and benefits, technological developments affecting GIS and sources of funds for research to political structures, availability of skilled staff, lack of proper advice, the unwisdom of ‘going it alone’ and management problems (which are as important as technical problems, if not more so). A successful programme of GIS depends on a coordination of effort relating to applications, trained personnel, governmental involvement in R. &D. and development of a source of independent advice.  相似文献   

8.
Abstract

A geographical information system (GIS) based study was carried out in a densely-populated watershed in Nepal. An evaluation of land use change between 1972 and 1990 indicated that there has been an increase in forest and agricultural land area and a decrease in shrubland and grassland area. GIS techniques were used to produce single and composite fertility index maps, which can be used for problem identification and planning. These maps indicate that forest soil fertility is generally poor in the watershed. GIS was found to be very beneficial in addressing critical resource issues in small watersheds in developing countries.  相似文献   

9.
Abstract

Abstract. The growth of the remote sensing field has caused and explosion in the size and complexity of Earth satellite image databases. The explosion of data is already challenging current satellite-based GIS databases. New technologies for information management will be required in the future to maintain these large geographically-oriented systems created by projects such as NASA's Earth Observing System (EOS). This paper presents a technology adapted from the planning/scheduling field in Artificial Intelligence (AI) that promises to automate and facilitate the process of creating and storing satellite images and their associated data products.  相似文献   

10.
Abstract

Abstract Chinese governments have long paid a great deal of attention to the collection of geodata, and existing sources have been further enhanced by technological advances, notably in remote sensing. Progress has also been made with automated cartography. An expert working group has been examining GIS and it is recognized that a system combining both national and regional components is most appropriate for China. Three basic functions are envisaged for such GIS: comprehensive regional analysis, prediction of change and the sharing of data. Such systems must serve the needs of users and, in order to demonstrate potential applications, regional experiments are being undertaken, including examples of urban information systems, river basin information systems and specialized systems (e.g. for tourist and forest resources). In the next few years, the emphasis will be on research and on technological preparation for the adoption of GIS, including the use of an experimental set of geographical grid cells. Chinese scholars are also involved in international collaboration in the study of global problems and propose a cooperative programme for a global geographical information system.  相似文献   

11.
Editorial review     
Abstract

This paper comprises the thoughts and perceptions of an interested outsider, an accountant and economist by training, who has recently chaired a Committee of Enquiry into the handling of geographical information. It focuses on the real barriers to getting more practical use from geographical information systems (GIS), most of which have research implications—but not of a technical nature. To an outsider GIS appears as a solution, or more strictly a tool, in search of a problem. Of course, there are numerous problems for GIS to tackle, but the difficulty is that those who have the problems are often either unaware of GIS and the questions they can deal with or, more seriously, are unaware that they have problems and of the questions they should be asking. GIS as a tool is about aiding managers to carry out their jobs more efficiently and effectively, and, more particularly, about better decision-making  相似文献   

12.
Abstract

Abstract. The growing interest in teaching about geographic information systems (GIS) raises a number of issues concerning the effectiveness of conventional instructional methods. To convey basic GIS concepts and applications better requires much more emphasis upon visual media. One such medium is that of VHS (or Beta) videotapes. Six currently-available GIS-oriented videotapes are reviewed for this purpose. Their contents are summarized and an evaluation is made of the usefulness of each in classroom-based GIS instruction.  相似文献   

13.
Abstract

The National Science Foundation will soon establish a National Center devoted to geographical research and education based on geographical information systems (GIS). The Center will be located at a university chosen on the basis of competitive proposals that will be evaluated primarily on the quality of their research agendas. The winning institution will be expected to involve government agencies and private firms in Center operations and programmes, and it will be expected to serve the national GIS community. The Center arose from a suggestion made by a member of the GIS research community. A large-scale database initiative and a Foundation commitment to Science and Technology Centers provided an institutional environment hospitable to the Center. There are similarities and differences in the approach taken toward GIS research, policy and applications in the United Kingdom (UK) and in the United States (US). Those similarities and differences offer promising topics for collaborative research on GIS itself and on GIS as an information technology affecting the discipline of geography. Cross-national UK-US research would be a productive step toward the globalization of GIS and GIS research.  相似文献   

14.
Abstract

Remotely-sensed image data have long served as a primary source of information for. geographical information systems (GIS), with the transformation of data to information provided by visual image interpretation. Digital image data, in combination with recent advances in computer technology, currently allow visual image interpretation to be realised in a completely digital processing environment. However, it remains desirable to capitalize even further on the potential of digital image data for GIS, through the use of schemes involving automated data processing. The opportunities for, and impediments to, such schemes are considered here with particular reference to the provision of information for natural resource management. It is concluded that further—although foreseeable—developments in both research and technology will be required before fully operational procedures for the automated acquisition of GIS information from image data can be established.  相似文献   

15.
Abstract

GIS have received increasing attention in recent years, particularly in local government. Despite the claims in the literature about the potential of the technology, to date there is still little information on the impact GIS applications are having on the organizations in which they are being implemented. With these considerations in mind this paper presents an evaluation of the findings of twelve case studies which were undertaken in a variety of British local government contexts during 1991 and 1992.

The evaluation of the findings of the case studies is divided into two parts. The first part indicates the limited impact GIS has had on the local authorities investigated even after at least two years experience. Given these findings the second part seeks to identify the issues which appear to be responsible for inhibiting the effective implementation of GIS in British local government. Overall it is suggested that some organizational cultures are inherently receptive and able to sustain the development of innovations such as GIS. However, whilst very few organizations are inherently innovative it was possible to identify four factors which appeared to enhance the chances of success. These are simple applications producing information which is fundamental to the work of potential users, user directed implementation involving the participation of all the stakeholders in the project, an awareness of the limitations of the organization with respect to the range of available resources, and a high degree of stability with respect to the general organizational environment, or alternatively an ability to cope with change. As a result the evaluation indicates that if GIS are to be effectively implemented much greater consideration must be given to the impact of organizational issues.  相似文献   

16.
Land use conflict within the Lal Lal Water Catchment is between landowners, the Shire, the Water Board and those directing regional pressures for development. It is exacerbated by inconsistency in building permit appraisal outcomes. The deliberations involved would clearly have benefited from access to spatial data sets through use of a Geographical Information System (GIS) during applications appraisal, in that inconsistencies are most obvious when mapped in relation to the criteria applied. GIS methodologies would ensure that information of a high standard was produced. Three strategic points are identified for the implementation of GIS: at the planning scheme formulation stage; the permit application stage; and the formal conflict resolution stage. Reference to GIS at the first two stages presupposes the existence of a local government area (LGA) spatial data base and a GIS/LIS that can output overlay maps. Application of GIS at the third stage is somewhat ‘after the event’. This study suggests that without such a regional review of the spatial patterns of permit appraisal criteria (including overland flow modelling) each appeal or negotiation is likely to yield an outcome that is inconsistent in relation to other cases. An LGA planning office maintaining a GIS with all layers relating to these criteria will have assembled its spatial data according to the requirements of its planning scheme and will make most use of it in a GIS at the permit appraisal stage.  相似文献   

17.
Abstract

A geographical information system (GIS) has proved to be a valuable tool in the Direct/Delayed Response Project—a comprehensive examination of the future, long-term chemical response of surface waters to acidic deposition. The role of the GIS within the project includes aggregation, analysis and display of various forms, scales and projections of environmental data related to acidic deposition. The GIS is particularly valuable for effectively communicating key scientific findings and results of regional, national and international importance to a diverse audience.  相似文献   

18.
从空间模式而言,城市群的本质是人口和经济活动在更大范围城市地域实体内的集聚。在这一集聚体内,原乡村地区密集参与着工业化、经济发展。在国内外经典文献分析的基础上,论文将城市群这一特征概括为分散性区域集聚,并认为分散性区域集聚是信息技术革命以来经济全球化空间选择的结果,也是中国政策制度背景的产物。作为全球制造业生产平台和协调控制中心在空间上的独特反映,这一根本属性使得城市群区别于传统区域,在空间上并不遍在;其分散性的发展特征使得它同时代表着最为严重的资源环境约束,值得特别关注。从分散性的地域单元入手的规划策略较目前的城市群整体战略而言,可能较易实施和取得效果。同时,随着中国内需战略和“一带一路”倡议的实施,城市群发生发展的国内外背景正在发生重要转变。分散性区域集聚的空间模式并不一定适用于中国所有区域,在进行规划管理时,必须审慎对待这一客观事实。  相似文献   

19.
Abstract

During the 1980s techniques for analysis of geographical patterns have been refined to the point that they may be applied to data from many fields. Quantitative spatial analysis and existing functions available in geographical information systems (GIS) enable computerized implementations of these spatial analysis methods. This paper describes the application of quantitative spatial analysis and GIS functions to analysis of language data, using the extensive files of the Linguistic Atlas of the Middle and South Atlantic States (LAMSAS). A brief review of recent development of using quantitative and statistical methods for analysing linguistic data is also included.  相似文献   

20.
基于GIS的交通网络可达性评价方法研究   总被引:1,自引:0,他引:1  
交通网络的评价方法很多,其中可达性被认为是一项综合的、有效的评价指标,并越来越多地被应用到城市规划、交通规划、空间结构与区域经济发展等多种领域。结合研究实例,总结了可达性的主要度量方法:距离法、累积机会法、潜力模型法、效用法和时空法,并对各种方法的优缺点进行了比较。GIS作为一门新兴技术,为可达性的计算提供了更为简便、精确和有效的工具。结合GIS的技术优势,提出了将GIS应用于交通网络可达性评价的一般方法,并给出了基于GIS的交通网络可达性评价的研究框架。  相似文献   

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