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Showing 2 results for Emami

Dr M.b. Fakhrzad, Ms. Leila Emami,
Volume 6, Issue 1 (3-2015)
Abstract

This paper presents a new mathematical model for a bi-objective job shop scheduling problem with sequence-dependent setup times that minimizes the weighted mean completion time and the weighted mean tardiness time. For solving this multi-objective model, we develop a fuzzy multi-objective linear programming (FMOLP) model. In this problem, a proposed FMOLP method is applied with respect to the overall acceptable degree of the decision maker (DM) satisfaction. Finally, a numerical example demonstrates the feasibility of applying the proposed model to job shop scheduling with set up times problem. The proposed model yields a compromised solution and the decision maker’s overall levels of satisfaction.


Mrs. Mahdieh Zarei, Dr. Hamid Mashreghi, Dr. Saeed Emami,
Volume 10, Issue 1 (7-2019)
Abstract

Nowadays, airline industries should overcome different barriers regarding the fierce competition and changing consumer behavior. Thus, they attempt to focus on joint decision making which enables them to set pricing and capacity allocation to maximize their profits. In this research, we develop a model to optimize pricing and capacity allocation in a duopoly of single-flight leg for two competitive airlines. The problem considers actual assumptions about flexible partitions in flight’s cabins and additionally demand uncertainty. There is a flexible partitioning of business and economy cabins and demand is assumed price-dependent with additive uncertainty. The capacity and pricing decisions are simultaneously determined through indirect channels. Moreover, a numerical study is developed to investigate how market components and competition conditions change pricing, capacity, and profit levels. The results show that increasing market volume like decreasing price sensitivity provides higher levels of price and profits. Moreover, intensified competition never leads to higher prices. Thus, a competitive network of airlines provides better impact on market mechanism to achieve competitive prices for both economy and business classes.

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مجله انجمن ایرانی تحقیق در عملیات Iranian Journal of Operations Research
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