Outlier test and analysis method of degradation data under unequal error variances

Author(s):  
Huirui Zhang ◽  
Yunxia Chen ◽  
Fengchun Lin
2011 ◽  
Vol 199-200 ◽  
pp. 534-537
Author(s):  
Wei Tao Zhao ◽  
Dong Lin Yao ◽  
Wei Ping Zhang

Based on reliability analysis theory, traditional interval reliability analysis method is improved by take the smaller value of probability reliability and interval reliability as the results of reliability assessment, which makes the reliability assessment results more fit engineering cases. The improved model is applied to reliability assessment of small sample products with degradation characteristics, and results of assessment are compared with existing methods. A numerical example is considered, the results show that the assessment results by the method proposed in the paper is reasonable and believable.


2013 ◽  
Vol 791-793 ◽  
pp. 1260-1263
Author(s):  
Yi Zhou He ◽  
Jin Huang Wu ◽  
Yi Dong Wang ◽  
Wei Hua Liu

In order to solve the key technology and method in reliability study of the long-life products, the analysis method of degradation data based on the degradation amount distribution was proposed in this paper. On the basis of statistical model, by analyzing three models of degradation amount distribution, it can be got there is a large number of reliability information with high-reliable and long-life products in performance degradation data. In the case of not getting the failure data by life test and accelerated life test, reliability assessment and life prediction could be carried out for high reliability and long life products with performance degradation data.


2013 ◽  
Vol 739 ◽  
pp. 781-784
Author(s):  
Jun Sheng Wang ◽  
Yi Zhou He ◽  
Jin Huang Wu ◽  
Jun Wei Lei

In order to solve the key technology and method in reliability study of the long-life products, the analysis method of degradation data based on the degradation amount distribution was proposed in this paper. On the basis of statistical model, by analyzing three models of degradation amount distribution, it can be got there is a large number of reliability information with high-reliable and long-life products in performance degradation data. In the case of not getting the failure data by life test and accelerated life test, reliability assessment and life prediction could be carried out for high reliability and long life products with performance degradation data.


2021 ◽  
Vol 7 (1) ◽  
pp. 241
Author(s):  
Dinar Mega Silvia Sari ◽  
Sri Suartini ◽  
Isro’iyatul Mubarokah ◽  
Nanu Hasanuh

This study aims to analyze the effect of mudharabah, musyarakah, and murabahah financing on the level of profitability in banks using the Return on Assets (ROA) ratio simultaneously and partially. The sample used in this study was 42 data from the results of the outlier test which previously had 52 sample data into 42 sample data with the study population using 7 (seven) Islamic commercial banks until 2019. The data analysis method used in this study was multiple linear regression of panel data. The results of this study indicate that partially mudharabah financing has no significant negative effect on the level of profitability, while musharaka partially has a negative effect on the level of profitability. Murabahah financing has a significant positive effect on profitability.


Planta Medica ◽  
2007 ◽  
Vol 73 (09) ◽  
Author(s):  
C Chrubasik ◽  
T Maier ◽  
M Luond ◽  
A Schieber

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