Seung-Kil Lim

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—This paper focuses on lot release control and scheduling problems in a semiconductor wafer fab producing multiple products that have different due dates and different process flows. For lot release control, it is necessary to determine the type of a wafer lot and the time to release wafers into the wafer fab, while it is necessary to determine sequences of(More)
We examined the effects of objectively measured physical activity (PA) and physical fitness (PF) on fear of falling (FOF) among older adults. The subjects were 94 Korean females aged 65-79. PA was measured with accelerometers, PF with the senior fitness test and FOF with the Korean Survey of Activities and Fear of Falling in the Elderly. With the subjects'(More)
—We consider a tool requirements planning problem in a flexible manufacturing system with an automatic tool transporter. The problem considered here is that of determining the number of tool copies of each tool type with the objective of minimizing total tardiness of orders with distinct due dates for a given budget for tool purchase. For the problem,(More)
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