Infrastructure Engineering - Research Publications

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    The dynamic nature of spatial data infrastructures: a method of descriptive classification
    Chan, Tai On ; Feeney, Mary-Ellen ; RAJABIFARD, ABBAS ; Williamson, Ian P. ( 2001)
    Spatial Data Infrastructure (SDI) is understood and described differently by stakeholders from different disciplines and different administrative/political levels. However, current SD Idefinitions are individually insufficient to describe the dynamic and multi-dimensional nature of SDI. Despite the international interest and activities toward SDI development, SDI remains very much an innovation even among practitioners. There are still doubts regarding the nature and identities of SDI, particularly in connection with how it evolves over time to meet user needs. Asa starting point a means to describe SDI’s multi-dimensional capacity as an inter- and intra- jurisdictional spatial information framework is required. The aim of this paper is to better understand and describe the nature of SDI and its components. A method to classify the perceived roles of SDI is identified. The method is extrapolated from a technique to describe different perspectives of Geographical Information System (GIS) diffusion, based on identified parallels between GIS and SDIs. The methodology may facilitate description and understanding of the SDI technological and user environment, by promoting insight into the dynamic roles of SDI.
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    Are SDIs serving the needs of local planning?: case studies of Victoria, Australia and Illinois, USA
    Nedovic-Budic, Z. ; Feeney, M-E. F. ; Rajabifard, A. ; Williamson, I. P. ( 2001)
    National spatial data infrastructures (SDI) have been initiated and built throughout 1990s in both Australia and the U.S., initiated and coordinated by the Australia New Zealand Land Information Council (ANZLIC) and the Federal Geographic Data Committee (FGDC), respectively. Numerous SDI-related activities at the national, state, and local level in both countries share similar core objectives, which are to stimulate coordinated collection, dissemination, and use of spatial data by public and private entities. This coordination is to result in digital databases that would be easily accessible and seamless across administrative and organizational boundaries and that would help secure social, environmental, and economic benefits to the involved communities. The improved information resources at the local level in particular are expected to contribute to sustainable urban development and to enhance the cooperation between government and nongovernment sectors. This paper raises the question about the actual effectiveness of the existing SDI developments and about the outcomes of the related interactions between the local, state, and national levels. Case study of local governments in Victoria, Australia and Illinois, U.S. are used to evaluate the utility of existing SDIs to local planning activities and to offer recommendations for increasing their effectiveness in supporting sustainable development.
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    Spatial data infrastructures: concept, SDI hierarchy and future directions
    Rajabifard, A. ; Williamson, I. P. ( 2001)
    The world as we know it is changing. Economies world wide are undergoing a process ofprofound and continuing structural change, and the global village is becoming a reality driven byIT and communication technologies. With this in mind, many countries believe that they canbenefit both economically and environmentally from better management of their spatial data assetsby taking a perspective that starts at a local level and proceeds through state, national and regionallevels to global level. This has resulted in the development of the Spatial Data Infrastructure (SDI)concept at these levels.SDI is fundamentally about facilitation and coordination of the exchange and sharing ofspatial data between stakeholders from different jurisdictional levels in the spatial datacommunity. Understanding of its role and nature are important to the acceptance of the conceptand its alignment with spatial industry objectives.The aim of this paper is to present the nature and concept of spatial data infrastructures,including the SDI hierarchy, which have helped to build understanding about the importance ofthe relationships within different levels of SDIs to support the interactions and partnerships of thespatial data communities. Moreover, the paper will highlight the importance of sharing andunderstanding its special social system, followed by a discussion of the future direction of SDIs. Itis argued that by better understanding the future direction of SDIs, any SDI development can gainsupport from a wider community of both government and non-government data users andproviders.
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    Spatial data infrastructure frameworks to support decision-making for sustainable development
    FEENEY, M ; Rajabifard, A ; WILLIAMSON, IP (Geography Institute of Colombia, 2001)