We have investigated the interactions between economic growth and industrial wastewater discharge from 1978 to 2007 in China's Hunan Province using co-integration theory and an error-correction model. Two main economic growth indicators and four representative industrial wastewater pollutants were selected to demonstrate the interaction mechanism. We found a long-term equilibrium relationship b...

In this research study, energy, exergy and economic analyses is performed for a combined cycle power plant (CCPP) with a supplementary firing system. The purpose of this analyses is to evaluate the economic feasibility of a CCPP by applying an optimization techniques based on Evolutionary algorithms. Actually, the evolutionary algorithms of Firefly, PSO and NSGA-II are applied to minimize the c...

In this work, an integrated model of economic production quantity, economic design of an -control chart, and preventive maintenance are investigated under non-uniform quality control parameters. The effect on the expected total cost and quality control cost is investigated with three different assumptions of the quality control parameters. Using a tabu seach algorithm, the optimal values of qua...

Optimization procedures are very useful tools in many economic decision-making problems. We deal with the case of optimization problems where uncertainties in parameters occur. The stochastic programming approach considers the probability distribution of uncertain parameters and seeks for a solution that is feasible up to a certain level of probability (chance-constrained programming). Robust p...

The software package SELBESTTRA offers a choice of the best transportation systems of mineral resources with technical, economic and ecological point of view. By entering of parameters of production and the parameters of the proposed transportation route, the software gives us the best solution regarding the protection of environment through which transport is carried out and that for the best ...