Replacement policy defines the enhancement factor in deciding the system performance. Many different policies have different effects on the system performance, but still there exist performance gap between processors and memory system. In the IPTV services it provides the various services to the user as per their request, the proposed policy is based on the no of hit count and miss count on the...

With the evolution of technology, the maintenance of sophisticated systems is of concern for system engineers and system designers. The maintenance cost of the system depends in general on the replacement and repair policies. The system replacement may be in a strictly periodic fashion or on a random basis depending upon the maintenance policy. At failure, the repair of the system may be perfor...

This paper introduces the notion of PoP (Policy of Policies) used to define standard policy replacement strategies in a policy-based network. We also propose an architecture to support PoP within PDPs (Policy Decision Points originally defined by the IETF). The notion of PoP, and the proposed architecture allow the automation of the policy replacement task currently manually executed by the net...

Multimedia proxy plays an important role in media streaming applications. In this paper, we propose an architecture for multimedia proxy across wireless Internet. By considering multiple objectives of multimedia proxy, we design a unified cost metric to measure proxy performance in wireless Internet. Furthermore, we propose a cost-based replacement policy for wireless Internet to improve the pe...

ON OPTIMAL POLICIES FOR MULTI·REPAIR·TYPE MARKOV MAINTENANCE MODELS Yukio Hatoyama Tokyo Institute of Technology (Received April 6, 1978) This paper treats an extension of an optimal machine maintenance model with Markovian deterioration introduced by Derman. The system consists of an operating machine whose deterioration is Markovian, a finite number of identical spare machines, and several ty...

Nurses have made a significant contribution to the development and application of dialysis in the 1950s and continuous renal replacement therapies (CRRT) in the Intensive Care Unit (ICU) setting from the 1980s. Any treatment requires patient and machine-circuit preparation, connection of the extracorporeal circuit (EC) to the patient vascular access catheter and regular tasks to maintain a trea...

BACKGROUND In a retrospective case-note and computer database analysis we assessed the outcome of very elderly patients (> or = 75 years old) with end-stage renal disease (ESRD) on renal replacement therapy (RRT). METHODS Fifty-eight individuals aged 75 or over (group 1) commenced RRT between 1 January 1991 and 31 December 1995. Comparisons were made with other patients commencing RRT who wer...

Web proxy caching is used to improve the performance of the Web infrastructure. It aims to reduce network traffic, server load, and user perceived retrieval delays. The heart of a caching system is its page replacement policy, which needs to make good replacement decisions when its cache is full and a new document needs to be stored. The latest and most popular replacement policies like GDSF us...

Members of the 67th World Health Assembly in 2014 were presented with a framework document to guide World Health Organization (WHO) engagement with non-state actors, a key part of WHO reform kick-started in 2011. According to this document, non-state actors include four distinct constituencies: i) nongovernmental organizations (NGOs), ii) private sector entities; iii) philanthropic foundations;...

In many situations, it may be more economical to use a used unit than to do a new one. This paper considers an age replacement policy and a periodic replacement policy with minimal repair at failure for a used unit of age x. We discuss optimum replacement policies which minimize the expected cost rates for a specified age x. Further, we obtain an upper bound of an optimum time for an age replac...