3 research outputs found
Characterization theorem on losses in queues
In this paper, we prove a characterization theorem on the number of losses
during a busy period in queueing systems, in which interarrival
time distribution belongs to the class NWUE.Comment: to appear in: Operations Research Letter
Crossings states and sets of states in P\'olya random walks
We consider the P\'olya random walk in . The paper establishes
a number of results for the distributions and expectations of the number of
usual (undirected) and specifically defined in the paper up- and down-directed
state-crossings and different sets of states crossings. One of the most
important results of this paper is that the expected number of undirected
state-crossings is equal to 1 for any state
. As well, the results of the
paper are extended to -dimensional random walks, , in bounded areas.Comment: Dear readers. I made a tremendous work to revise this paper after
referee report. There are 30 pages of 11pt format, 4 figures and 1 tabl