Browsing by Author "El Mekkawy, Tarek"
Now showing items 1-14 of 14
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A pooling strategy for flexible repair shop designs
Turan, Hasan Huseyin; Pokharel, Shaligram; Sleptchenko, Andrei; ElMekkawy, Tarek Y; Al-Khatib, Maryam ( SciTePress , 2018 , Conference Paper)We discuss the design problem of a repair shop in a single echelon repairable multi-item spare parts supply system. The repair shop consists of several parallel multi-skilled servers, and storage facilities for the repaired ... -
A sorting based efficient heuristic for pooled repair shop designs
Turan, Hasan Hüseyin; Sleptchenko, Andrei; Pokharel, Shaligram; ElMekkawy, Tarek Y ( Elsevier , 2020 , Article)In this paper, we address the assignment problem of skills to servers (e.g., repairmen) in a multi-server repair shop of a spare parts supply system. This type of assignment problems tends to be hard in general, due to the ... -
An Efficient Heuristic for Pooled Repair Shop Designs
Turan, Hasan Hüseyin; Pokharel, Shaligram; ElMekkawy, Tarek Y.; Sleptchenko, Andrei; Al-Khatib, Maryam ( Springer Verlag , 2019 , Conference Paper)An effective spare part supply system planning is essential to achieve a high capital asset availability. We investigate the design problem of a repair shop in a single echelon repairable multi-item spare parts supply ... -
Facility location decisions within integrated forward/reverse logistics under uncertainty
Ashfari, Hamid; Sharifi, Masoud; ElMekkawy, Tarek Y.; Peng, Qingjin ( Elsevier B.V. , 2014 , Conference Paper)In this paper, a stochastic mixed integer linear programming (SMILP) model is proposed to optimize the location and size of facilities and service centres in integrated forward and reverse streams under uncertainty. The ... -
Impact of COVID-19 Pandemic on Qatar Electricity Demand and Load Forecasting: Preparedness of Distribution Networks for Emerging Situations
El-Hafez, Omar Jouma; ElMekkawy, Tarek Y.; Kharbeche, Mohamed; Massoud, Ahmed ( MDPI , 2022 , Article)The COVID-19 pandemic has brought several global challenges, one of which is meeting the electricity demand. Millions of people are confined to their homes, in each of which a reliable electricity supply is needed, to ... -
Multi-objective optimisation of facility location decisions within integrated forward/reverse logistics under uncertainty
Afshari, Hamid; Sharafi, Masoud; ElMekkawy, Tarek Y.; Peng, Qingjin ( Inderscience Publishers , 2016 , Article)Increasing interest to the environmental, social and economic aspects of the supply chains has motivated supply chain managers to optimise location-allocation decisions within closed-loop logistics networks. This paper ... -
Optimal design and operation of conventional, solar electric, and solar thermal district cooling systems
Alghool, Dana M.; ElMekkawy, Tarek Y.; Haouari, Mohamed; Elomri, Adel ( John Wiley and Sons Ltd , 2022 , Article)This research investigates the integration of solar energy with traditional cooling technologies using solar electric cooling systems. A holistic optimization process is introduced to enable the cost-effective design of ... -
Optimal Integration Of Solar Energy With District Cooling System: Mathematical Modeling Approach
Alghool, Dana Mohammad Mustafa (2019 , Master Thesis)The outstanding development witnessed in various sectors across the globe caused mankind to increase their need to cooling energy and hence, consume unsustainable energy resources excessively. That raised the fears on ... -
Optimization of design and operation of solar assisted district cooling systems
Alghool, Dana M.; ElMekkawy, Tarek Y.; Haouari, Mohamed; Elomri, Adel ( Elsevier , 2020 , Article)The demand for air conditioning and cooling services is rapidly increasing worldwide. As cooling demand has high coincidence to occur in countries with high solar irradiation, the combination of solar thermal energy and ... -
Optimizing multi-objective dynamic facility location decisions within green distribution network design
Afshari, Hamid; Sharafi, Masoud; ElMekkawy, Tarek; Peng, Qingjin ( Elsevier , 2014 , Conference Paper)Despite the surge of sustainable economic development which inspires corporations to optimize investment on environmental-friendly infrastructural facilities, limited pragmatic evidences are observed in product-service ... -
PHYSICIAN SCHEDULING IN WOMEN'S HOSPITAL
ABOUSHAQRAH, NOUR NABIL (2018 , Professional Masters Project)In this project, a physician scheduling problem arising from the operations of the Obstetrics and Gynecology Department at Hamad Women's Hospital in Qatar has been studied. The essence of the physician scheduling problem ... -
Solar Technology and District Cooling System in a Hot Climate Regions: Optimal Configuration and Technology Selection
Ismaen, Rabah; ElMekkawy, Tarek Y.; Pokharel, Shaligram; Elomri, Adel; Al-Salem, Mohammed ( MDPI , 2022 , Article)With the increasing need for cooling and the concerns for pollution due to fossil fuel-based energy use, renewable energy is considered an add-on to cooling technologies. The climatic condition in the Middle East, analyzed ... -
Spare Parts Strategy: A Multi-Criteria Systematic Classification Approach To Reduce Inventory Cost
Al-Kuwari, Khaled Nabeel (2018 , Professional Masters Project)Efficient and effective spare parts management play an essential role for equipment-intensive companies, and many of them struggle with spare parts management issues. Asset and maintenance managers are continuously challenged ... -
System requirements and optimization of multi-chillers district cooling plants
Ismaen, Rabah; El Mekkawy, Tarek Y.; Pokharel, Shaligram; Al-Salem, Mohammed ( Elsevier , 2022 , Article)District cooling systems (DCS) are particularly important in the Middle East due to higher overall temperatures on most days of the year. The design, operation, and control of a new DCS should consider the abundant ...