1,721,213 research outputs found

    Measuring Uncertainty and Criticality in Network Plannin by the Pert-path Technique

    No full text
    The use of uncertainty and criticality measures in network planning of engineering projects by PERT networks is limited in practice because of their unreliability or complexity. The measures appear as inappropriate to support the definition of contractual obligations when based on uncertain information. The author proposes new uncertainty and criticality measures based on the identification and analysis by PERT-path technique of possible completion sequences of project activities. The measures prove to be effective in project planning and contracting. An algorithm and a stochastic analytical model suitable for the quantification of the measures concerned are proposed. A numerical example is developed

    Analytic hierarchy process model for landfill site selection

    No full text
    The demand for landfill disposal capacity is presently very high, despite environmental problems often attributed to this disposal technology. Accordingly, the selection of optimal landfill sites presents a major challenge. I propose an analytic hierarchy process-based model for the optimal ranking of potential municipal landfill sites. The AHP approach also allows for inconsistency evaluations of subjective preferences provided by decision makers. The model is applied to the selection of landfill sites in Apulia, a region in southeast Italy. This case study highlights the capabilities of the approach in solving a landfill site selection problem
    corecore