International Journal of Engineering Management and Economics
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International Journal of Engineering Management and Economics (2 papers in press)
A MODEL UTILIZING THE ARTIFICIAL NEURAL NETWORK IN COST ESTIMATION OF CONSTRUCTION PROJECTS IN JORDAN by Dareen Al-Tawal, Ghaleb J. Sweis, Mazen Arafeh Abstract: The efficacy and methodologies of artificial neural network (ANN) was performed on cost and design data of 104 building projects constructed over the past 5 years in Jordan to develop, train, and test a cost predictive ANN models. Fifty-three design parameters were utilized to develop the first ANN model at the detailed design stage, then a reduced factors of Forty-one design parameters were utilized to develop the second predictive model at the schematic design stage. Finally, Twenty-seven design parameters available at the concept design stage were utilized for the third ANN model. The models achieved an average cost estimation accuracies of 98%, 98%, and 97%, respectively, in the three stages. Keywords: Cost Estimation; Project Cost; Artificial Neural Network; Construction Project.
The Algerian Natural Gas in light of the Regional Gas Markets Developments by Laib Yassine Laib, Dounya Boudada, Riad Abadli Abstract: The international gas markets have witnessed major developments. Shale gas revolution in the United States of America is the most important one, in addition to the escalating role of the liquefied natural gas. This stimulated an increase in natural gas prices, accompanied by an increase in demand; which led to significant changes that affected the dealers in those markets. Algeria is one of the most important dealers in gas markets. However, several challenges have been produced; due to the developments in these markets. These challenges put the natural gas industry in Algeria in front of large pressures, particularly with the domestic consumption rise of natural gas. Through this paper, we aim to highlight the most important challenges that face gas industry in Algeria and how to deal with them. Keywords: Regional gas markets; liquefied natural gas; Shale gas; Algerian natural gas.