12 Result(s)
within
Chapter
**ufeng Zhao
Engineering
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Chapter
Approximate Calculations of Maintenance Policies for Weibull Distribution Using Exponential Distribution
It is always easy to get analytical formulas of optimal maintenance policies with exponential failure times in reliability theory, however, it might be difficult sometimes to discuss them theoretically with a ...
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Chapter
Stochastic Redundant Replacement Maintenance Models
Many serious accidents have happened as systems have become large scale and complex, and moreover, advanced nations have almost finished infrastructures and rushed into a maintenance period. Maintenance would ...
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Chapter
WIB (Which-Is-Better) Problems in Maintenance Reliability Policies
There have been many studies of maintenance policies in reliability theory, so that we have to select better policies that are suitable for objective systems in actual fields, such as age replacement, periodic...
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Chapter
Average Failure Rate and Its Applications of Preventive Replacement Policies
When a mission arrives at a random time and lasts for an interval, it becomes an important constraint to plan preventive replacement policies, as the unit should provide reliability and no maintenance can be d...
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Chapter
Reliability Analysis of a Cloud Computing System with Replication: Using Markov Renewal Processes
Cloud computing is an important infrastructure for many industries. There are increasing needs for such new techniques in data protection, short response time, reduced management cost, etc. A cloud computing s...
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Chapter
Age Replacement Models with Random Works
This chapter gives four age replacement models for an operating unit when it works successively for jobs with random working cycles: (1) The unit is replaced at a total operating time T; (2) the unit is replaced ...
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Chapter
Periodic Replacement Overtime
In this chapter, we suppose that the system is large and complex which consists of many kinds of units, and it operates for a job with random working cycles introduced in Chap. 1
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Chapter
Replacement Overtime with Three Variables
In Chaps. 1 and 2, we have considered several replacement policies in which the unit is replaced at time T or at cycle N, and ...
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Chapter
Age Replacement Overtime
We consider a unit operating for a job with random working cycles, in which case, it would be impossible or impractical to replace the unit in a strict or deterministic fashion [1, p. 72], [2, p. 245]. From such ...
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Chapter
Inspection Overtime
Most systems such as standby electric generators and defense systems, and some units in complex and large-scale systems such as aircrafts and industry plants, have to be checked at suitable times to search the...
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Chapter and Conference Paper
Replacement Policies with a Random Threshold Number of Faults
Most systems fail when a certain amount of reliability quantities have exceeded their threshold levels. The typical example is cumulative damage model in which a system is subjected to shocks and suffers some ...
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Chapter
Generational Garbage Collection Policies
In the computer science community, the technique of garbage collection [5] is an automatic process of memory recycling, which refers to those objects in the memory no longer referenced by programs are called garb...
