service availability is important for any organization. this has become more important with the increase of dos attacks. it is therefore essential to assess the threat on service availability. we have proposed a new model for threat assessment on service availability with a data fusion approach. we have selected three more important criteria for evaluating the threat on service availability and...

Abstract Present paper describes with the bulk arrival retrial queueing M / G1, G2, / 1 model with two phase service and Bernoulli vacation schedule wherein first phase service is essential and the next second phase service is optional. If the second phase service is not demanded by arriving customer then the single server takes a vacation period according to Bernoulli vacation schedule in orde...

In this study, we consider a single server vacation queueing model with optional bulk service and an un-reliable server. A single server provides first essential service (FES) to all arriving customers one by one; apart from essential service, he can also facilitate the additional phase of optional service (OS) in batches of fixed size b(≥ 1), in case when the customers request for it. The serv...

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...

today, electronic banking has essential role in banking industry. challenges facing banking industry led to banks make to use electronic banking and delivery services and products throughout electronic banking. moreover, they are trying to understand their customers' needs and everyday increase service quality throughout electronic banking. this research tries to investigate effect of cust...

This paper summarises the recommendations of the WHO Collaborating Centre for Palliative Care Public Health Programmes with respect to design and implementation of palliative care national or regional public health palliative care programmes in their initial phases. We describe the elements of a programme (leadership and aims; needs and context assessment; definition of the target patients; gen...