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This paper considers a multi-product, single-server production system where both setup times and costs are incurred whenever the server changes product. The system is make-to-order with a per unit backlogging cost. The objective is to minimize the long-run average cost per unit time. Using a fluid model, we provide a closed-form lower bound on system(More)
OBJECTIVE To explore the relationship between fecal examinations and worm collection results in a community investigation of Ascaris lumbricoides infection. METHODS A total of 1 019 residents in Zhangxi Village, Nanchang County, Jiangxi Province were investigated with the Kato-Katz technique and worm collection after deworming. RESULTS Among 1 019(More)
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