We present a new iterative mathematical model for calculating the average bandwidth assigned to traffic flows using a Weighted Round Robin with Priority queuing (WRRPQ) scheduler with both strict and rate controlled priority in IP based NGN networks. The bandwidth assignment estimation is based on the average packet length, link speed and the arrival rate. We prove the model outcome with exampl...

This paper describes a study conducted to develop a method to facilitate more reliable determination of the rehabilitation priority order for water pipes by taking into account the pipes’ hydraulic importance. Existing methods use only the pipeline deterioration rate to determine the rehabilitation priority order. Accordingly, the deterioration rate under normal conditions and the hydraulic imp...

We consider a two-priority queueing system which represents an ATM node serving both variable bit rate (VBR) and unspeciied bit rate (UBR) traac. We determine the (transmission or link) capacity necessary for each traac type to guarantee prespeciied quality of service (QoS) requirements. This is done by means of a steady state performance analysis of the tail distribution of the buuer occupanci...

The rising popularity of multimedia applications and potential commercial usage of Mobile Ad hoc network (MANET) clearly indicates that Quality of Service (QoS) support in MANETs is an unavoidable task. Essentially, Multimedia traffic should get preference over conventional data traffic during communication through some kind of priority-based mechanism to assure a timely and guaranteed delivery...

A priority queue transforms an input sequence ~r into an output sequence r which is a re-ordering of the sequence ~r. The set R of all such related pairs is studied in the case that tr is a binary sequence. It is proved that R is a partial order and that IRI = c,~+1, the (n + 1)th Catalan number, An efficient (O(n2)) algorithm is given for computing the number of outputs achievable from a given...

Web caching and Content Distribution Networks (CDNs) occupy strategic positions in the growth of Internet by effectively delivering data to the end users with reduced access latency. Due to diverse nature of applications, Quality of Service (QoS) is considered an important aspect in web caching. To achieve QoS in Caching scenario web requests are classified into different classes with each clas...

The objective of the study was to determine the prevalence rate of priority psychiatric disorders in a rural area in Kerala and to find out the sociodemographic correlates of the morbidity. A door to door survey had been conducted by trained surveyors to identify individuals with priority psychiatric disorders. The detected cases were examined by a psychiatrist at their houses in the village it...

This paper presents hybrid RFID – OWC with an adaptive priority transmission scheme. In this model, we apply optical wireless communication (OWC) for transmitting confidential information to a radio frequency identification (RFID) reader. Since OWC provides high security, this improves the security of our system. The priority of information is assigned according to the level of confidentiality ...