NIGERIAN JOURNAL OF SCIENCE AND ENVIRONMENT
Journal of the Faculties of Science and Agriculture, Delta State University, Abraka, Nigeria
Keywords: arrival rate/ time, service time, waiting time, express lines/ways, queue models
We examine a waiting process involving checkouts in superstores where time consciousness is seriously in practise in most competitive businesses. The paper proposes a technique for assessing the influence of express lines/ways on the waiting process. An optimization model is design to minimize the mean waiting time taking into cognisance the maximum number of items/products permitted in the express line. The intent of the work is based on a real case of a do – it –yourself exclusive superstore, however the approach can be applied generally. A significant point of the paper is that the optimal operation of express lines does not improve the mean waiting time glaringly, however the influence of non-optimal operation can be very unfavourable.
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