We use sample path arguments to derive convexity properties of an M/M/S queue withimpatient customers that balk and renege. First, assuming that the balking probability andreneging rate are increasing and concave in the total number of customers in the system(head-count), we prove that the...

This paper investigates the impact of e-waste regulation on new product introduction in a stylized model of the electronics industry. Manufacturers choose the development time and expenditure for each new version of a durable product, which together determine its quality. Consumers purchase the...

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