Cache replacement policies are developed to help insure optimal use of limited resources. Varieties of such algorithms exist with relatively few that dynamically adapt to traffic patterns. Algorithms that are tunable typically utilize offline training mechanisms or trial-and-error to determine optimal characteristics. Utilizing multiple algorithms to establish an efficient replacement policy th...

The block replacement policy with no replacement at failure means that a unit is always replaced at fixed time, but not replaced at failure. In this paper, the lifetime of the unit is assumed to be an uncertain variable, the model of expected cost per unit time following no replacement at failure policy is proposed, and the existence condition of the optimal replacement time is given. Furthermo...

Politics is not the ghost in the machine of global health policy. Conceptually, it makes little sense to argue otherwise, while history is replete with examples of individuals and movements engaging politically in global health policy. Were one looking for ghosts, a more likely candidate would be democracy, which is currently under attack by a new global health technocracy. Civil society moveme...

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;...

This paper presents the effects of salvage value on the optimal age-replacement policy for non-repairable products sold with a renewing free-replacement warranty (RFRW). Cost models from the customer’s perspective are developed for both warranted, and non-warranted products. The corresponding optimal replacement ages are derived such that the long-run expected cost rate is minimized. Under the ...

Many different access control policies and models have been developed to suit a variety of goals; these include Role-Based Access Control, One-directional Information Flow, Chinese Wall, Clark-Wilson, N-person Control, and DAC, in addition to more informal ad hoc policies. While each of these policies has a particular area of strength, the notational differences between these policies are subst...

To ensure the production/output and customer satisfaction in mining sector the estimation of Remaining Useful Life of mining machineries is a prime. In this paper we used the reliability analysis in order to estimate an optimal mining equipment repair/replacement policy by estimating their remaining useful life. The proportional hazard model was used in reliability analysis to be realistic and ...

Abstract In this paper, a repairable system of a monotone process model for a one-component multistate degenerative system with (k + 1) states(k-failure states and one working state) is studied. Also an alternative model, called the Negligible Or Non-Negligible (NONN) repair times introduced by Thangaraj and Rizwan (2001) is incorporated in this model to develop some new repair models. A replac...