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    • Assessing repair and maintenance efficiency for water suppliers a novel hybrid USBM-FIS framework
    Authors: Amir Homayoun, Sarfaraz; Amir Karbassi, Yazdi; Thomas, Hanne;  Advisor: -;  Co-Author: - (2023)

    A metropolitan area's water supply is imperative to the city's development. One of the main goals of the water supply utilities is to ensure the availability of water, as a lack of water would cause many social, political, or health problems. Therefore, water supply facilities must be in good condition, efficient preventive maintenance plans must be implemented, and the performance of the maintenance team monitored. In this paper, efficiency indices of Tehran water utility maintenance teams are investigated using different Data Envelopment Analysis (DEA) models. The final scores were then used as inputs to a Fuzzy Inference System (FIS) to assess the efficiency of these maintenance units. Two performance indicators based on DEA, "Availability efficiency" and "Repair time efficiency"...