Consider a tandem queue consisting of two single-server queues in series, with a Poisson arrival process at the first queue and arbitrarily distributed service times, which for any customer are identical in both queues. For this tandem queue, we relate the tail behaviour of the sojourn time...

AMS classifications: 60K25, 90B22.

We study the impacts of regime changes and related rule implementations on IPOs’ initial return for China’s entrepreneurial boards (ChiNext and STAR). We propose that an initial return contains the issuer’s fair value and an investors’ overreaction and examine their magnitudes and...

Primary healthcare institutions (PHIs) in China have experienced a sizable decline in medical services in recent years. Despite the large regional disparities in China, there is a lack of evidence on the differential patterns of medical services offered by PHIs, especially from a spatial...