Infrastructure Engineering - Research Publications

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Author: Duffield, Colin × Author: Xu, Ming ×

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    Improved capital procurement through increased use of quantitatively-based decisions
    Xu, M ; Duffield, C (Department of Civil Engineering, National Taiwan University, 2008)
    The procurement of major capital projects always involves significant risk and uncertainties and this is one of the primary causes for the variations from expected outcomes. This paper outlines the delimitation between strategies for making complex decisions using quantitative analyses as opposed to the techniques and applications currently being used by project and construction managers. Various approaches have been developed and adopted by researchers and practitioners to improve the quality of critical project decisions to maximise benefits. Strategic frameworks and organisational hierarchies are frequently deemed as an optimal solution from the perspective of industrial participants, while numerous researchers indicate decisions with quantitative evidences, underpinned by proper choice of technique, will add additional benefits over current industrial practices. It is asserted that improved decisions can be made through the additional use of quantitative approaches. This paper reports the finding of a study that has identified where the increased use of quantitative approaches may assist project and construction managers and proposes a mechanism to confirm the potential benefits.
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    Interpretation of qualitative and quantitative information for project reviews: A fuzzy-based approach for OGC ™ gateway review (GR) colour code system (CCS)
    Xu, M ; Duffield, C ; Pelham, N (Department of Civil Engineering, National Taiwan University, 2008)
    Independent project reviews are gaining popularity as a technique to improve project outcomes through the timely identification of outstanding project risks. A common technique is that of a Gateway. The Gateway Review Process (GRP) appraises qualitative and quantitative risks and reports the findings via a Colour Code System (CCS) of Red/Amber/Green (R/A/G). Medium to high risk projects that exceed certain risk thresholds are eligible for GRP. Intuitive recognition of potential risks from the application of CCS is insufficient to determine the value gained from the process. This paper attempts to shed light on a tentative effort to interpret the CCS into numerical descriptions by using fuzzy-based method on a survey outcome. This quantitative interpretation of the CCS would then be adopted to provide a measure and understanding (decision evidence) of the benefits obtained through project review such as GRP.
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    Initial identification and categorisation of critical success factors of PPP
    XU, MING ; DUFFIELD, COLIN ( 2011)
    The method of Critical Success Factors (CSFs) is widely adopted as an approach of measuring project performance, including the Public Private Partnership (PPP). Because of the special considerations of different industries, there lacks a consistent set of CSFs in each of the industry matters. This report, as the first step of a systematic study to structure a robust rule break to estimate the process for the establishment of PPPs, aims at producing a heuristic list of CSFs from previous studies and a concise and reasonable way of categorising these CSFs. Based on the identification and categorisation of CSFs from previous studies, potential research processes are also proposed in this report.