Today, in a competitive market, service organizations and producers have a great attention to optimization and customer satisfaction in order to become competitive. Service organization must reduce the number of arrival, waiting time and service time in the queue to increase the customer satisfaction. In this paper by the aim of queuing theory we analyze the optimal amount of increment in a rep...

abstract nowadays, understanding and strengthening of social networks and services in rural settlements and consciously facility and service managing as a rural development planning trend policy not only helps the optimum distribution of facilities and resources in rural areas but physical integrity and structure of the suitable habitat space. village of shirvan, the scope of our study, is one ...

The announcement and discovery of network services represents one of the most important functionalities in today’s networks. In order to find and use services provided by remote systems, service management and dedicated service discovery protocols are used. These mechanisms introduce, however, additional overhead, especially in resource-constrained environments such as sensor networks. In this ...

β-lactamases, which degrade the antibiotic molecules; (B) Reduced binding affinities between the antibiotics and receptors in the bacterial cells. These antibiotic resistance mechanisms are of great clinical concern as their development and spread across many species of bacteria has led to the erosion of the efficacy of many commonly prescribed antibiotics, in particular penicillin and its deri...