Likelihood Ratio Test Interval Estimation of Reliability Indices for Numerical Control Machine Tools

2012 ◽  
Vol 48 (02) ◽  
pp. 9 ◽  
Author(s):  
Jianguo YANG
Keyword(s):  
Likelihood Ratio ◽  
Likelihood Ratio Test ◽  
Machine Tools ◽  
Interval Estimation ◽  
Numerical Control ◽  
Ratio Test ◽  
Test Interval ◽  
Reliability Indices ◽  
Control Machine

Reliability Assessment Test Design for Numerical Control Machine Tools

2012 ◽  
Vol 542-543 ◽  
pp. 1218-1221 ◽  
Author(s):  
Zhi Ming Wang
Keyword(s):  
Sample Size ◽  
Machine Tools ◽  
Process Model ◽  
Information Matrix ◽  
Reliability Assessment ◽  
Interval Estimation ◽  
Numerical Control ◽  
Reliability Indices ◽  
Mean Time Between Failures ◽  
Log Ratio

According to the required interval estimation precision of mean time between failures (MTBF) and reliability for numerical control (NC) machine tools, where failure processes can be described by the power law process model, the minimal testing truncated time and sample size of the reliability assessment test are given using Fisher information matrix method. The results show that there are two main factors which affect the truncated time and sample size. They are the log ratio of upper bound to lower bound and confidence of interval estimation for reliability indices, respectively. Among them, the minimal sample size increases significantly as the improvement of required precision of interval estimation for reliability indices and confidence increases, but the minimal testing truncated time is less affected by these two factors.

A likelihood ratio test for detecting patterns of disease-marker association

1997 ◽  
Vol 61 (4) ◽  
pp. 335-350 ◽  
Author(s):  
A. P. MORRIS ◽  
J. C. WHITTAKER ◽  
R. N. CURNOW
Keyword(s):  
Likelihood Ratio ◽  
Likelihood Ratio Test ◽  
Ratio Test ◽  
Disease Marker

A Likelihood Ratio Test of the Equality of Paired Survival Data with Censoring

1986 ◽  
Vol 28 (6) ◽  
pp. 665-672 ◽  
Author(s):  
R. G. Knapp ◽  
A. J. Gross ◽  
A. B. Cantor
Keyword(s):  
Likelihood Ratio ◽  
Likelihood Ratio Test ◽  
Survival Data ◽  
Ratio Test
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