zeynab elahi
[ 1 ] - A Queuing Model for Stochastic Location-inventory Problem with Waiting Cost Considerations
This paper presents a three-level supply chain model which includes single supplier, several distribution centers and sets of retailers. For this purpose, by adopting the queuing approach, a mixed nonlinear integer programming model is formulated. The proposed model follows minimizing the total cost of the system by determining: 1) the number and location of distribution centers between candida...
[ 2 ] - Identify the challenges of leadership in hospitals
Background: In this study, we seek to identify the challenges of leadership role in physicians. For physicians facing the challenge of being able to appear only as a leader is fraught with challenges. Because they have to follow the clinical duties of the patients at the same time. In fact, we face five major challenges along the way. This article introduces these five challenges and solutions ...
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