This investigation deals with MX/G/1 queueing model with setup, bulk- arrival, loss-delay and balking. The provision of second optional service apart from essential service by an unreliable server is taken into consideration. We assume that the delay customers join the queue when server is busy whereas loss customers depart from the system. After receiving the essential service, the customers m...

An M/M/1 queueing system with second optional service and unreliable server is studied. We consider that the server works at different rate rather than being idle during the vacation period. The customers arrive to the system according to Poisson process with state dependent rates depending upon the server’s status. All customers demand the first essential service whereas only some of them dema...

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...

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...