AbstractMajority of researches in no-wait flowshop scheduling assume that there is only one machine at each stage. But, factories commonly duplicate machines parallel for operation. In this case, they balance the speed stages, increase throughput shop floor and reduce impact bottleneck stages. Despite their importance, no paper to study general with machines. This studies problem where objective minimise makespan. Since mathematical model problem, we first mathematically formulate it form...

The production planning and distribution are among the most important decisions in supply chain. Classically, this problem, it is assumed that all orders have to produced separately delivered; while, practice, an order may be rejected if cost brings chain exceeds its revenue. Moreover, can delivered a batch reduce related costs. This paper considers problem with acceptance package delivery maximize profit. At first, new mathematical model based on mixed integer linear programming developed....

This paper studies multi-objective no-wait hybrid flowshop scheduling problems to minimise both makespan and total tardiness. Furthermore, we consider transportation times between machines. time can be either job-dependent or job-independent. We that all transportations are job-independent; two machines have done by one transporter. presents a new electromagnetism algorithm (MOEA). Electromagnetism is known as flexible effective population-based utilising an attraction/repulsion mechanism...

The job shop problem is the most complicated and typical of all kinds production scheduling problems, allocation resources over time to perform a collection tasks. This paper studies multi-objective problems where setup times sequence dependent minimise two objective functions simultaneously. Since NP-hard difficult find an optimal solution in reasonable computational efficient electromagnetism algorithm (MOEA) presented as procedure. An known flexible effective population-based utilising...

Due to the variety of products, simultaneous production different models has an important role in systems. Moreover, considering realistic constraints designing lines attracted a lot attentions recent researches. Since assembly line balancing problem is NP-hard, efficient methods are needed solve this kind problems. In study, new hybrid method based on unconscious search algorithm (USGA) proposed mixed-model some conditions such as parallel workstation, zoning constraints, sequence dependent...

In recent years, the optimal design of workshop schedule has received much attention with increased competition in business environment. As a strategic issue, designing affects other decisions production chain. The purpose this thesis is to three-objective mathematical model, objectives minimizing work completion time, delay time and energy consumption, considering importance businesses reduce consumption years. developed model been solved using exact solution methods Weighted Sum (WS)...

Abstract This paper explores flexible flow lines where setup times are sequence dependent. The optimization criterion is the minimization of total weighted completion time. We propose an An iterated local search algorithm (ILS) proposed to tackle problem. Among different meta-heuristics, greedy (IGA) has shown high performance for simpler problems such as flowshops. looks at applying adapted IGA a much more complex problem well-known and evaluated. In this adaptation, completely decoding...

The concept of matching in graph theory is very important. Now, this paper we considered the notion fuzzy graphs and generalized concept. First defined notions (maximum) edge-fuzzy number vertex-fuzzy number. Then compare them by crisp get related results. Finally give an application.

There are two common simplifying assumptions made in the scheduling of operations. One is that machines available continuously, and other once a job completes one process it immediately for its next. Moreover, flowshops, commonly assumed jobs must visit all machines. In practice, however, these may not be justifiable some applications. This paper deals with generalized flow shop (GFS) problem machine availability constraints, transportation times between stages, skipping. The...

The purpose of the present study is investigating relationship between performance industrial clusters and renovation small industries in East Azerbaijan, Iran. In this study, its dimensions including supporting institutions, communicative sectors production-business has been investigated using indices industries. participants include all 243 production units auto-parts manufacturing cluster province. Due to limited number subjects, census-taking was used. data collection instrument for...