this paper analyzes renewal input state dependent queue with $n$- policy wherein the server takes exactly one vacation. using the supplementary variable technique and recursive method, we derive the steady state system length distributions at various epochs. various performance measures has been presented. finally, some numerical  computations in the form of graphs are presented to show the par...

Nevi are a main risk factor for malignant melanoma, and most nevi develop in childhood. This study examined the relationship between vacations and nevi in 681 White children born in 1998 who were lifetime residents of Colorado. Vacation histories were assessed through telephone interviews of parents, whereas nevus and phenotypic characteristics were assessed through skin exams at age 7. Multipl...

AbstractIn this paper, a single server bulk service queuing system with interrupted vacation, request for Re-service and Balking is considered. At a service completion, if the server finds at least „a‟ customers waiting for service say ξ, he serves a batch of min (ξ ,b ) customers, whereb ≥ a. At the completion of an essential service, the leaving batch of customers may request for a re-service...

This paper introduces the CPP/M/c model with working vacations to describe queueing phenomena that arise in an advanced computing environment of virtualized servers operated by the infrastructure owners. In the proposed queue the inter-arrival times of jobs requesting servers follow a Generalized Exponential distribution. To model a maintenance activity, we assume that a certain number of serve...

This paper introduces the CPP/M/c model with working vacations to describe queueing phenomena that arise in an advanced computing environment of virtualized servers operated by the infrastructure owners. In the proposed queue the inter-arrival times of jobs requesting servers follow a Generalized Exponential distribution. To model a maintenance activity, we assume that a certain number of serve...

Abstract: This paper treats a discrete-time batch arrival queue with geometrically working vacations and vacation interruption. The main purpose of this paper is to present a performance analysis of this system. For this purpose, we first derive the probability generating function (PGF) of the stationary system length at the departure epochs based on the embedded Markov chain technique. Next, w...

OBJECTIVE We examine the workplace experiences of Ontario youth in the service sector, with a particular interest in hazard exposures, safety training and supervision. METHOD A cross-sectional telephone survey in 2008 of working youth aged 14-18. Items queried respondents about the tasks performed, worker training and supervision. The study parallels one already published in the US. This is t...

From pre-trip planning through post-trip remembering, vacations unfold over long periods of time. Through the course of a trip the same travel information may be used repeatedly but with different levels of success and satisfaction. These experiential fluctuations over time were examined in a study of trip planners, who collected travel information from a chamber of commerce before leaving home...

are called upon to undertake a great deal of work which is outside their terms of contract and which often takes them away for appreciable periods of time. The universities recognize this, for the work which is done in this way often helps to bring credit to the university and the contacts which are made bring distinguished visitors and may also attract junior staff and research workers of high...