id: 00026028 dt: j an: 00026028 au: Chen, Hong; Mandelbaum, Avi ti: Stochastic discrete flow networks: Diffusion approximations and bottlenecks. so: Ann. Probab. 19, No.4, 1463-1519 (1991). py: 1991 pu: Institute of Mathematical Statistics, Hayward, CA la: EN cc: ut: heavy traffic; queueing networks; functional central limit theorems; reflected Brownian motion ci: li: doi:10.1214/aop/1176990220 ab: The congested discrete flow queueing networks, both open and closed, are described in terms of the bottlenecks of the networks. The main results stated as functional central limit theorems provide diffusion approximations for irreducible closed, open networks and networks with priorities. The joint limits for workload process, queue-size process, busy time process and sojourn time process are given. It is proved that the limits are reflected Brownian motions on nonnegative orthant (for open networks) and on the simplex (for closed ones). rv: J.Morozov (Petrozavodsk)