مرور Volume 11, Issue 3 بر اساس تاریخ انتشار
در حال نمایش موارد 1 - 11 از 11
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Developing EPQ models for non-instantaneous deteriorating items
(Islamic Azad University, South Tehran Branch, 2015-09-01)In this paper, the classical economic production quantity (EPQ) model is developed for non-instantaneous deteriorating items by considering a relationship between the holding cost and the ordering cycle length. Two models ...
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A mathematical model for the design of distributed layout by considering production planning and system reconfiguration over multiple time periods
(Islamic Azad University, South Tehran Branch, 2015-09-01)In this paper, we develop a new mathematical model that integrates layout configuration and production planning in the design of dynamic distributed layouts. The model incorporates a number of important manufacturing ...
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Evaluation of Nigerian hospital meal carts
(Islamic Azad University, South Tehran Branch, 2015-09-01)Hospital meal carts are used to deliver meals, drugs and some other materials to patients in the hospital environment. These carts which are moved manually by operators, the health workers, mostly do not comply ...
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A stochastic model for the cell formation problem considering machine reliability
(Islamic Azad University, South Tehran Branch, 2015-09-01)This paper presents a new mathematical model to solve cell formation problem in cellular manufacturing systems, where inter-arrival time, processing time, and machine breakdown time are probabilistic. The objective function ...
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An experimental analysis and optimization of machining rate and surface characteristics in WEDM of Monel-400 using RSM and desirability approach
(Islamic Azad University, South Tehran Branch, 2015-09-01)In the present work, an experimental investigation on wire electrical discharge machining (WEDM) of Monel-400 has been presented. Monel-400 is a nickel–copper-based alloy, mostly employed in ships and corrosion-resisting ...
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Retailer’s optimal credit period and cycle time in a supply chain for deteriorating items with up-stream and down-stream trade credits
(Islamic Azad University, South Tehran Branch, 2015-09-01)In practice, the supplier often offers the retailers a trade credit period M and the retailer in turn provides a trade credit period N to her/his customer to stimulate sales and reduce inventory. From the retailer's ...
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An automated time and hand motion analysis based on planar motion capture extended to a virtual environment
(Islamic Azad University, South Tehran Branch, 2015-09-01)In the context of industrial engineering, the predetermined time systems (PTS) play an important role in workplaces because inefficiencies are found in assembly processes that require manual manipulations. In this study, ...
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Analysis of interactions among the barriers to JIT production: interpretive structural modelling approach
(Islamic Azad University, South Tehran Branch, 2015-09-01)‘Survival of the fittest' is the reality in modern global competition. Organizations around the globe are adopting or willing to embrace just-in-time (JIT) production to reinforce the competitiveness. Even though JIT is ...
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Developing a new stochastic competitive model regarding inventory and price
(Islamic Azad University, South Tehran Branch, 2015-09-01)Within the competition in today's business environment, the design of supply chains becomes more complex than before. This paper deals with the retailer's location problem when customers choose their vendors, and inventory ...
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Operator agency in process intervention: tampering versus application of tacit knowledge
(Islamic Azad University, South Tehran Branch, 2015-09-01)Statistical process control (SPC) theory takes a negative view of adjustment of process settings, which is termed tampering. In contrast, quality and lean programmes actively encourage operators to acts of intervention and ...
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Maximizing the nurses’ preferences in nurse scheduling problem: mathematical modeling and a meta-heuristic algorithm
(Islamic Azad University, South Tehran Branch, 2015-09-01)The nurse scheduling problem (NSP) has received a great amount of attention in recent years. In the NSP, the goal is to assign shifts to the nurses in order to satisfy the hospital's demand during the planning horizon by ...
