Malmquist–Luenberger Productivity Index for a Two-Stage Structure in the Presence of Undesirable Outputs and Uncertainty

<div>A dynamic petroleum well system for NDEA proposed model. OW: oil extraction unit; ET: equalization tanks; AT: aeration tanks; SD: sludge dewatering; TF: tertiary filters; CAF: coagulation air flotation; JB: JBILAFB; ST: sludge thickener; ABFB: aerobic biological fluidize bed; FT: filter tank; CW: clean water tank; WC: wastewater clarifiers; DU: disinfection units; SH: sludge holding tanks.</div>

Advances in Operations Research

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Figure 1

Figure 1: Malmquist–Luenberger Productivity Index for a Two-Stage Structure in the Presence of Undesirable Outputs and Uncertainty 