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In modeling of job shop multi-line facility layout problem, the properties of product also impact the logistics cost. To avoid neglecting of these impactions, in this paper, logistics is replaced by the Equivalent Logistics. On the basis of limitation analysis of quadratic assignment problem, an improved genetic algorithm is proposed. And the encoding, reproduction and fitness functions of are well...
This paper establishes a multi-objective combinatorial optimization model including the logistics cost, space utilization cost and reconfiguration cost. In the model, fuzzy cluster arithmetic is adopted to obtain an optimal cluster number of multi-product, the equivalent logistics quantity is used to substitute the logistics quantity, and consideration of the factors of geometry, density, degree of...
An improved fuzzy theory is presented to realize product cluster of OEM. The research is based on the fuzzy cluster arithmetic, and the optimal cluster number of product is obtained using the F-statistic to avoid the disadvantage of uncertainty of the parameter λ. This model is realized through the Excel software, and its validity and practicability are verified by the instance.
This article establishes a multi-objective combinatorial optimization model of multi-product single-line layout to minimize multi-product logistics costs, processing time and area occupancy rate, based on the analysis of the shortcomings of single-product single-objective optimization. Considering factors impacting on logistics costs such as the product geometry, density, degree of vulnerability factors...
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