In some data envelopment analysis (DEA) applications, some inputs of DMUs have negative values with positive cost. This paper generalizes the global cost Malmquist productivity index to compare the productivity of dierent DMUs with negative inputs in any two periods of times under variable returns to scale (VRS) technology, and then the generalized index is decomposed to several components. The...

Abstract Machine learning (ML) is a well-established research topic in Industry 4.0 boosting its adoption. ML also used for manufacturing cost estimation during design. Such approaches are commonly to estimate the of mass-produced parts. Many consolidated historical data available training regression models. Unfortunately, very often, such database not available. The paper defines an approach p...

This research performs the advanced exergy and exergoeconomic analyses of a combined cycle power plant (CCPP) located in Zavareh, Iran. The objective of this research is to evaluate the irreversibilities, their related cost rates of each part of the CCPP that can be avoided and the inefficiencies of each part that caused by other components. The advanced exergy and exergoeconomic analyses indic...

Abstract The ever-increasing competitiveness, due to the market globalisation, has forced industries modify their design and production strategies. Hence, it is crucial estimate optimise costs as early possible since any following changes will negatively impact redesign effort lead time. This paper aims compare different parametric cost estimation methods that can be used for analysing mechanic...

Bypassing agents are the most commonly used medicines for the treatment of hemophilia patients with inhibitors. The aim of this study is to identify the cost components of management of bleeding vents in hemophilia patients with inhibitors in Iran. This study is a cross-sectional study using a bottom-up approach to determine the cost components of treatment of hemophilia patients with inh...

Supply chain management is essential for the success of firms and customer satisfaction. In addition, a suitable performance evaluation system is vital to the effective management of the supply chain. Due to the importance of cost management in the supply chain, an approach based on Data Envelopment Analysis (DEA) is proposed in the current study for evaluating the cost efficiency of closed-loo...

the redundancy allocation problem can be described as selecting the components and system configuration in order to optimize some objective function(s) without violating the system constraints. operating conditions are not constant in many advanced engineering systems. mostly, in the engineering applications selection, the number of redundancy components must be balanced among the constraints (...