Technical Note—Turning Off a Server with Customers Present: Is This Any Way to Run anM/M/cQueue with Removable Servers?

A critical study on commentaries of : He said: This is a right way with Me

On the forty first verse of the chapter Hijr no acceptable commentary has given so far. The verse can be regarded as one opposed to the diversity of commentators` views. The origin of the diversity of the two groups, Shiite and Sunni, has been known to be the meaning of This and with Me. The paper has critically given four ways of reading the verse firstly and then studied commentator`s four vi...

Transient analysis of a two-heterogeneous servers queue with system disaster, server repair and customers’ impatience

A two-heterogeneous servers queue with system disaster, server failure and repair is considered. In addition, the customers become impatient when the system is down. The customers arrive according to a Poisson process and service time follows exponential distribution. Each customer requires exactly one server for its service and the customers select the servers on fastest server first basis. Ex...

Controllable Multi-Server Queue with Balking (TECHNICAL NOTE)

a comparison of teachers and supervisors, with respect to teacher efficacy and reflection

supervisors play an undeniable role in training teachers, before starting their professional experience by preparing them, at the initial years of their teaching by checking their work within the proper framework, and later on during their teaching by assessing their progress. but surprisingly, exploring their attributes, professional demands, and qualifications has remained a neglected theme i...

Queues with slow servers and impatient customers

Article history: Received 6 August 2008 Accepted 18 February 2009 Available online 27 February 2009