World Academy of Science, Engineering and Technology, International Journal of Industrial and Manufacturing Engineering, 2017
Abstract—In the last decades, increasing in human and natural disaster occurrence had very irrepa... more Abstract—In the last decades, increasing in human and natural disaster occurrence had very irreparable effects on human life. Hence, one of the important issues in humanitarian supply chain management is identifying and prioritizing the different risks and finding suitable solutions for encountering them at the time of disaster occurrence. This study is an attempt to provide a comprehensive review of humanitarian supply chain risks in a case study of Tehran Red Crescent Societies. For this purpose, Best-Worst method (BWM) has been used for analyzing the risks of the humanitarian supply chain. 22 risks of the humanitarian supply chain were identified based on the literature and interviews with four experts. According to BWM method, the importance of each risk was calculated. The findings showed that culture contexts, little awareness of people, and poor education system are the most important humanitarian supply chain risks. This research provides a useful guideline for managers so t...
Abstract Billions of people are affected by worldwide natural and man-made disasters each year. T... more Abstract Billions of people are affected by worldwide natural and man-made disasters each year. There is considerable evidence that the number of disasters is increasing, but there is still relatively little-published work aimed at improving the understanding of the different barriers of the humanitarian supply chain (HSC) and finding suitable solutions for dealing with them. The aim of this paper is to provide a comprehensive review of HSC barriers in the context of a case study of the Tehran Red Crescent Societies. An integrated approach using Fuzzy Delphi and the Best-Worst method (BWM) has been used for analyzing the barriers. Based on the literature and interviews with experts, 28 barriers of the humanitarian supply chain were identified. According to the Fuzzy Delphi result, 22 barriers were assessed that subsequently classified into 9 categories. After that, the BWM method calculated the importance of each barrier. The findings showed that Cultural, Managerial, and Educational barriers are the important barriers. This research provides useful guidelines for policy makers so that they can benefit from the results to optimize their solutions.
Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology, 2014
Laboratory tests have been carried out in order to assess the influence of groove activation and ... more Laboratory tests have been carried out in order to assess the influence of groove activation and deactivation on the performance of a twin axial groove steadily loaded hydrodynamic journal bearing. Temperature distribution at the oil–bush interface, oil outlet temperature, total oil flow rate, partial oil flow rate (at each groove), and motor consumption were measured for several journal speeds and loads under constant feeding pressure ( pf) and constant feeding temperature ( Tf), at five different loading angles (Γ). In this study, the corresponding groove was deactivated whenever negative oil flow rate was observed in it and results were compared. It was found that the groove deactivation strategy has profound influence on the bearing performance when negative flow rate occurs at one groove, preventing such undesirable effects as lubricant starvation at the loaded region of the bearing. Groove deactivation in the event of negative flow rate may be easily implemented by incorporati...
World Academy of Science, Engineering and Technology, International Journal of Industrial and Manufacturing Engineering, 2017
Abstract—In the last decades, increasing in human and natural disaster occurrence had very irrepa... more Abstract—In the last decades, increasing in human and natural disaster occurrence had very irreparable effects on human life. Hence, one of the important issues in humanitarian supply chain management is identifying and prioritizing the different risks and finding suitable solutions for encountering them at the time of disaster occurrence. This study is an attempt to provide a comprehensive review of humanitarian supply chain risks in a case study of Tehran Red Crescent Societies. For this purpose, Best-Worst method (BWM) has been used for analyzing the risks of the humanitarian supply chain. 22 risks of the humanitarian supply chain were identified based on the literature and interviews with four experts. According to BWM method, the importance of each risk was calculated. The findings showed that culture contexts, little awareness of people, and poor education system are the most important humanitarian supply chain risks. This research provides a useful guideline for managers so t...
Abstract Billions of people are affected by worldwide natural and man-made disasters each year. T... more Abstract Billions of people are affected by worldwide natural and man-made disasters each year. There is considerable evidence that the number of disasters is increasing, but there is still relatively little-published work aimed at improving the understanding of the different barriers of the humanitarian supply chain (HSC) and finding suitable solutions for dealing with them. The aim of this paper is to provide a comprehensive review of HSC barriers in the context of a case study of the Tehran Red Crescent Societies. An integrated approach using Fuzzy Delphi and the Best-Worst method (BWM) has been used for analyzing the barriers. Based on the literature and interviews with experts, 28 barriers of the humanitarian supply chain were identified. According to the Fuzzy Delphi result, 22 barriers were assessed that subsequently classified into 9 categories. After that, the BWM method calculated the importance of each barrier. The findings showed that Cultural, Managerial, and Educational barriers are the important barriers. This research provides useful guidelines for policy makers so that they can benefit from the results to optimize their solutions.
Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology, 2014
Laboratory tests have been carried out in order to assess the influence of groove activation and ... more Laboratory tests have been carried out in order to assess the influence of groove activation and deactivation on the performance of a twin axial groove steadily loaded hydrodynamic journal bearing. Temperature distribution at the oil–bush interface, oil outlet temperature, total oil flow rate, partial oil flow rate (at each groove), and motor consumption were measured for several journal speeds and loads under constant feeding pressure ( pf) and constant feeding temperature ( Tf), at five different loading angles (Γ). In this study, the corresponding groove was deactivated whenever negative oil flow rate was observed in it and results were compared. It was found that the groove deactivation strategy has profound influence on the bearing performance when negative flow rate occurs at one groove, preventing such undesirable effects as lubricant starvation at the loaded region of the bearing. Groove deactivation in the event of negative flow rate may be easily implemented by incorporati...
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