Infrastructure Engineering - Research Publications

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    A new vision on cadastral data model
    Kalantari, Mohsen ; RAJABIFARD, ABBAS ; WALLACE, JUDE ; WILLIAMSON, IAN ( 2006)
    Land administration systems are evolving towards an integrated land management paradigm designed to support sustainable development. In this paradigm, land administration delivers four functionalities: land mapping, land registration, land valuation and land development, each with specific data elements, with the cadastral data model at the core. Cadastral data modelling potentially plays a key role in both data and business management in modern land administration systems. However, some modifications to existing data models could potentially improve their capacity to deliver sustainability. Firstly, the existing role of land parcels and properties as core building blocks in land administration systems can be significantly extended to make the cadastral fabric available to assist management of a wider range of rights, restrictions and responsibilities by using the concept of legal property objects: an entity defined by a law or regulation which relates to a physical space on, below or above the earth. This can be interpreted as a new land related commodity, land parcel or a property. Secondly, although land parcel and property identifiers are key elements of interoperability within land administration subsystems, the paper argues that they have not yet given appropriate emphasis in cadastral data models. Among the identifiers, spatial identifiers can potentially simplify data exchange and work flows among land administration functionalities on a much wider basis. Finally, the paper discusses technical issues raised by changing the cadastral model: the advantages and disadvantages of spatial identifiers, possibilities for spatially presenting rights restrictions and responsibilities, and consistency between various legal property objects.
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    Assessing the worldwide comparison of cadastral systems
    RAJABIFARD, ABBAS ; Williamson, Ian P. ; STEUDLER, DANIEL ; BINNS, ANDREW ; King, Mathew (Elsevier, 2006)
    There is growing interest internationally in land administration and cadastral systems and especially in their role as part of a national Spatial Data Infrastructure (SDI). The important role the cadastre plays in supporting sustainable development is also well recognised. Both developed and developing countries accept the need to evaluate cadastral systems to help identify areas of improvement and whether their systems are capable of addressing future needs. Countries are continually re-engineering and implementing various aspects of the cadastre, comparing systems and trying to identify best practice within nations of the same socio-economic standing.In order to address this need, members of a team from the Centre for Spatial Data Infrastructures and Land Administration at the Department of Geomatics, the University of Melbourne, with the support of the United Nations Permanent Committee on GIS Infrastructure for Asia and the Pacific (PCGIAP) and the International Federation of Surveyors (FIG), have developed a cadastral template. The template aims to assist the evaluation and benchmarking of cadastral systems and the role they play in spatial data infrastructures.This paper aims to outline the concept and theory behind the cadastral template as well as analysing the results from 34 completed country templates. Several indicators have been used to analyse and benchmark countries cadastral systems, results of which will contribute to an improved understanding of the complex relationship between cadastral, land administration system and National SDI initiatives. This will also enable a worldwide comparison of cadastral systems, forming the basis for best practice and a tool to improve national cadastral systems.
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    Transferring our knowledge and systems: tenure formalisation
    Dalrymple, K . ; Wallace, J . ; Williamson, I. P. ; ( 2005)
    Land administration systems are key infrastructure for national growth. They deliver macroeconomic growth, allow greater market integration, provide security of tenure and investments, and increase the capacity to deliver welfare. However, land administration systems supporting these activities are complicated and limited. While advanced tools and principles may be borrowed by countries building local land markets, every situation requires innovative solutions in response to the unique and dynamic land administration environment. Project designs must capture a wide range of people to land relationships and different socio-environmental circumstances. An investigation of different people to land and natural resource arrangements was conducted in a development scenario. Case study investigations took place in three rural villages in Cambodia undergoing different stages of land administration project implementation. These studies revealed a wide set of indispensable informal tenure arrangements outside the design scope for providing formal tenure security. From 1990 to now, land projects design emphasis has moved from technological to institutional criteria. Further design change is still required, especially to deliver sustainability and social development. In particular land administration systems used in development scenarios must approach formalization of land tenure with more innovative approaches. This may also require an expansion of tenure security options beyond those currently included in formal systems. Formalised Western skills may be advantageous for delivering some services, but they must be complimented by a holistic understanding of local culture and capacity.
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    3D data sourcing for land and property information: a geometric and semantic perspective
    JAZAYERI, IDA ; RAJABIFARD, ABBAS ; Kalantari, Mohsen ( 2013)
    Population growth has prompted land administrators to re-evaluate the current land development cycle, incorporating the third dimension to enable a more complete and effective property registration system. This research, which centres on the 3D data sourcing methods, has suggested a set of data sourcing requirements. It is envisaged that the culmination of legal entities together with the geometric and semantic components of our cities in a 3D environment will enable a more complete and effective land and property information registration system that will in turn ultimately help decision-making processes in our governing bodies to better manage economic development and build sustainable communities. Focussing on two of these requirements (geometric and semantic) an investigation on data acquisition techniques is discussed. Implementation of UAV data is suggested as an effective data sourcing method, particularly for developing countries and poverty stricken areas, where low cost is critical.
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    Land administration for housing production: An approach for assessment
    Agunbiade, ME ; Rajabifard, A ; Bennett, R (ELSEVIER SCI LTD, 2014-05)
    Abstract withheld
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    A geometric and semantic evaluation of 3D data sourcing methods for land and property information
    Jazayeri, I ; Rajabifard, A ; Kalantari, M (ELSEVIER SCI LTD, 2014-01)
    Abstract withheld
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    On recognizing land administration as critical, public good infrastructure
    Bennett, R ; Tambuwala, N ; Rajabifard, A ; Wallace, J ; Williamson, I (ELSEVIER SCI LTD, 2013-01)
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    Inter-governmental land information asymmetries in Australia
    Tambuwala, Nilofer ; RAJABIFARD, ABBAS ; BENNETT, ROHAN ; WILLIAMSON, IAN ; WALLACE, JUDE ( 2012)
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    Spatially Enabling Risk for Management of Land and Property
    POTTS, K ; Rajabifard, A ; Williamson, IP (Surveying & Spatial Sciences Institute, 2011)
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    Understanding the relationship between spatial information, property markets and macroeconomic policy
    Tambuwala, N ; Bennett, RM ; Rajabifard, A ; Williamson, IP (Surveying & Spatial Sciences Institute, 2011)