Optimal Replacement of Complex Devices

1996 ◽  
pp. 158-169 ◽  
Author(s):  
Süleyman Özekici
Keyword(s):  
Optimal Replacement

Near-optimal replacement policies for shared caches in multicore processors

2021 ◽  
Author(s):  
Javier Díaz ◽  
Pablo Ibáñez ◽  
Teresa Monreal ◽  
Víctor Viñals ◽  
José M. Llabería
Keyword(s):  
Multicore Processors ◽  
Optimal Replacement ◽  
Shared Caches

On Optimal Replacement Policies

1982 ◽  
Vol 28 (11) ◽  
pp. 1304-1312 ◽  
Author(s):  
D. Assaf ◽  
B. Levikson
Keyword(s):  
Optimal Replacement

A bivariate optimal replacement policy for a repairable system

1994 ◽  
Vol 31 (4) ◽  
pp. 1123-1127 ◽  
Author(s):  
Yuan Lin Zhang
Keyword(s):  
Explicit Expression ◽  
Average Cost ◽  
Replacement Policy ◽  
Repairable System ◽  
Optimal Replacement ◽  
Long Run ◽  
Optimal Replacement Policy ◽  
Working Age ◽  
Better Than

In this paper, a repairable system consisting of one unit and a single repairman is studied. Assume that the system after repair is not as good as new. Under this assumption, a bivariate replacement policy (T, N), where T is the working age and N is the number of failures of the system is studied. The problem is to determine the optimal replacement policy (T, N)∗such that the long-run average cost per unit time is minimized. The explicit expression of the long-run average cost per unit time is derived, and the corresponding optimal replacement policy can be determined analytically or numerically. Finally, under some conditions, we show that the policy (T, N)∗ is better than policies N∗ or T∗.

Burn-in procedures for a generalized model

2001 ◽  
Vol 38 (02) ◽  
pp. 542-553 ◽  
Author(s):  
Ji Hwan Cha
Keyword(s):  
The Other ◽  
Replacement Policy ◽  
Type I ◽  
Type Ii ◽  
Failure Model ◽  
Minimal Repair ◽  
Optimal Replacement ◽  
Complete Repair ◽  
Optimal Replacement Policy ◽  
Type Of Failure

In this paper two burn-in procedures for a general failure model are considered. There are two types of failure in the general failure model. One is Type I failure (minor failure) which can be removed by a minimal repair or a complete repair and the other is Type II failure (catastrophic failure) which can be removed only by a complete repair. During a burn-in process, with burn-in Procedure I, the failed component is repaired completely regardless of the type of failure, whereas, with burn-in Procedure II, only minimal repair is done for the Type I failure and a complete repair is performed for the Type II failure. In field use, the component is replaced by a new burned-in component at the ‘field use age’ T or at the time of the first Type II failure, whichever occurs first. Under the model, the problems of determining optimal burn-in time and optimal replacement policy are considered. The two burn-in procedures are compared in cases when both the procedures are applicable.

scholarly journals Optimal replacement of water pipes

2003 ◽  
Vol 39 (5) ◽  
Author(s):  
Alain Mailhot ◽  
Annie Poulin ◽  
Jean-Pierre Villeneuve
Keyword(s):  
Water Pipes ◽  
Optimal Replacement

scholarly journals A Robust Bayesian Approach to an Optimal Replacement Policy for Gas Pipelines

Entropy ◽  
2015 ◽  
Vol 17 (6) ◽  
pp. 3656-3678 ◽  
Author(s):  
José Arias-Nicolás ◽  
Jacinto Martín ◽  
Fabrizio Ruggeri ◽  
Alfonso Suárez-Llorens
Keyword(s):  
Bayesian Approach ◽  
Replacement Policy ◽  
Gas Pipelines ◽  
Optimal Replacement ◽  
Optimal Replacement Policy

scholarly journals Microwave absorption and mechanical properties of double-layer cement-based composites containing different replacement levels of fly ash

2018 ◽  
Vol 25 (4) ◽  
pp. 707-714 ◽  
Author(s):  
Yuefang Zhang ◽  
Shunhua Liu ◽  
wanJun Hao
Keyword(s):  
Mechanical Properties ◽  
Fly Ash ◽  
Double Layer ◽  
Impedance Matching ◽  
X Ray Diffraction ◽  
Replacement Ratio ◽  
Matching Layer ◽  
Optimal Replacement ◽  
Zn Ferrite ◽  
Absorbing Layer

Abstract Double-layer absorbing cement-based composites with the thickness of 10 mm were prepared, including different replacement levels of fly ash (FA) in the absorbing layer as well as the matching layer for impedance matching. Waste polyethylene terephthalate bottle fragment was introduced as electromagnetic transparent reinforcement aggregate. Carbon black was used to be original absorbent in the absorbing layer. The microstructure and electromagnetic parameters of FA were closely looked at through scanning electron microscope, X-ray diffraction, and analyzer of vector network. The absorption and mechanical properties of cement-based composites were tested. It turned out that when the optimal replacement ratio of FA in the absorbing layer and matching layer gets to 50%:30%, the minimum value of reflection loss achieves −22.3 dB at 13.2 GHz; also, the value of absorption bandwidth that is effective (<−8 dB) is 6.4 GHz. Ni-Zn ferrite proves to be a feasible absorbent that is additional for the matching layer compared to what is added to the absorbing layer. The compressive strength of all the mixtures decreased, while the flexural strength decreased first and then increased with the rise of the FA replacement level.

Optimal replacement with a single unloaded standby

1984 ◽  
Vol 7 (1-2) ◽  
pp. 67-77
Author(s):  
C. G. Henin ◽  
P. J. Ryan
Keyword(s):  
Optimal Replacement
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