Energy consumption of today's datacenters is a constant concern from the standpoints of
monetary and environmental costs. An intuitive solution to address these immense energy …

This paper considers a finite capacity multiserver queue for performance modeling of data
centers. One of the most important issues in data centers is to save energy of servers. To this …

The main objective is to present an off-line signature verification system. It is basically
divided into three parts. The first demonstrates a pre-processing process, a segmentation …

In this research paper we consider the matrix polynomial equation arising naturally in the
equilibrium analysis of a structured G∕ M∕ 1-type Markov process. We obtain an explicit …

We consider a state-dependent single-server queue with orbit. This is a versatile model for
the study of service systems, where the server needs a non-negligible time to retrieve …

Energy consumption of today's datacenters is a constant concern from the standpoints of
monetary and environmental costs. We model a datacenter as a queueing system, where …

In many real-life queueing systems, a customer may balk upon arrival at a queueing system,
but other customers become aware of it only at the time the balking customer was to start …

We analyze the time-dependent behavior of an M/M/c priority queue having two customer
classes, class-dependent service rates, and preemptive priority between classes. More …

We consider how to best schedule reparative downtime for a customer-facing online service
that is vulnerable to cyber attacks such as malware infections. These infections can cause …

Markov chains frequently arise in modeling and analyzing queueing systems, especially
those systems that operate at intermediate load. In fact, all of the queueing systems explored …