User contributions for Nicolette Young

10 January 2012

• 21:0721:07, 10 January 2012 diff hist −1,895 Template:Multiple systems with event codes rga →Event Codes
• 21:0621:06, 10 January 2012 diff hist +16,424 N Template:Multiple systems with event codes rga Created page with '==Multiple Systems with Event Codes== The Multiple Systems with Event Codes data type is used to analyze the failure data from a reliability growth test in which a number of sys…'
• 21:0621:06, 10 January 2012 diff hist −16,383 Template:Rga crow extended →Multiple Systems with Event Codes
• 21:0621:06, 10 January 2012 diff hist +5,246 N Template:Mixed data rga Created page with '==Mixed Data== The Crow Extended model also can be applied for discrete data from one-shot (success/failure) testing. In RGA, the Discrete Data > Mixed Data option gives a data …'
• 21:0521:05, 10 January 2012 diff hist −5,228 Template:Rga crow extended →Mixed Data
• 21:0421:04, 10 January 2012 diff hist +1,858 N Template:Grouped data rga Created page with '==Grouped Data== Parameter estimation for grouped data using the Crow-AMSAA model is the same as described in Chapter 5. The equations used to estimate the parameters of the Cro…'
• 21:0421:04, 10 January 2012 diff hist −1,838 Template:Rga crow extended →Grouped Data
• 20:5320:53, 10 January 2012 diff hist +9,235 N Template:Bounds on growth potential mtbf rga Created page with '===Bounds on Growth Potential MTBF=== ====Fisher Matrix Bounds==== ::<math>\begin{align} & MTB{{F}_{G{{P}_{L}}}}= & \frac{1}{{{r}_{U}}} \\ & MTB{{F}_{G{{P}_{U}}}}= & \frac{1}…'
• 20:5320:53, 10 January 2012 diff hist −9,196 Template:Confidence bounds crow extended rga →Bounds on Growth Potential MTBF
• 20:5220:52, 10 January 2012 diff hist +1,674 N Template:Bounds on growth potential failure intensity rga Created page with '===Bounds on Growth Potential Failure Intensity=== ====Fisher Matrix Bounds==== If there are no BC failure modes, the growth potential failure intensity is <math>{{\widehat{r}}_…'
• 20:5220:52, 10 January 2012 diff hist −1,621 Template:Confidence bounds crow extended rga →Bounds on Growth Potential Failure Intensity
• 20:5120:51, 10 January 2012 diff hist +714 N Template:Bounds on projected mtbf rga Created page with '===Bounds on Projected MTBF=== ====Fisher Matrix Bounds==== ::<math>\begin{align} & MTB{{F}_{{{P}_{L}}}}= & \frac{1}{{{[{{\lambda }_{P}}(T)]}_{U}}} \\ & MTB{{F}_{{{P}_{U}}}}=…'
• 20:5120:51, 10 January 2012 diff hist −681 Template:Confidence bounds crow extended rga →Bounds on Projected MTBF
• 20:5020:50, 10 January 2012 diff hist +2,177 N Template:Bounds on projected failure intensity rga Created page with '===Bounds on Projected Failure Intensity=== ====Fisher Matrix Bounds==== The projected failure intensity <math>{{\lambda }_{P}}(T)</math> must be positive, thus <math>\ln {{\l…'
• 20:5020:50, 10 January 2012 diff hist −2,131 Template:Confidence bounds crow extended rga →Bounds on Projected Failure Intensity
• 20:4920:49, 10 January 2012 diff hist +727 N Template:Bounds on demonstrated mtbf rga Created page with '===Bounds on Demonstrated MTBF=== ====Fisher Matrix Bounds==== ::<math>\begin{align} & MTB{{F}_{{{D}_{L}}}}= & \frac{1}{{{[{{\lambda }_{D}}(T)]}_{U}}} \\ & MTB{{F}_{{{D}_{U}}…'
• 20:4920:49, 10 January 2012 diff hist −691 Template:Confidence bounds crow extended rga →Bounds on Demonstrated MTBF
• 20:4920:49, 10 January 2012 diff hist +2,629 N Template:Bounds on demonstrated failure intensity rga Created page with '===Bounds on Demonstrated Failure Intensity=== ====Fisher Matrix Bounds==== If there are no BC failure modes, the demonstrated failure intensity is <math>{{\widehat{\lambda }}_{…'
• 20:4820:48, 10 January 2012 diff hist −2,580 Template:Confidence bounds crow extended rga →Bounds on Demonstrated Failure Intensity
• 20:4620:46, 10 January 2012 diff hist +17,785 N Template:Confidence bounds crow extended rga Created page with '==Confidence Bounds== In this section, we will present the methods used in RGA to estimate the confidence bounds for the Crow Extended model when applied to developmental testing…'
• 20:4520:45, 10 January 2012 diff hist −17,746 Template:Rga crow extended →Confidence Bounds
• 20:4520:45, 10 January 2012 diff hist +13,235 N Template:Failure mode management strategy rga Created page with '==Failure Mode Management Strategy== <br> Management controls the resources for corrective actions. Consequently, the effectiveness factors are part of the management strategy. F…'
• 20:4520:45, 10 January 2012 diff hist −13,195 Template:Rga crow extended →Failure Mode Management Strategy
• 20:4320:43, 10 January 2012 diff hist +8,514 N Template:Test-fix-find-test rga Created page with '==Test-Fix-Find-Test== <br> Traditional reliability growth models provide assessments for two types of testing and corrective action strategies: test-fix-test and test-find-test.…'
• 20:4320:43, 10 January 2012 diff hist −8,491 Template:Rga crow extended →Test-Fix-Find-Test
• 20:4320:43, 10 January 2012 diff hist +15,897 N Template:Test-find-test rga Created page with '==Test-Find-Test== <br> Test-find-test is the case where all corrective actions are delayed until after the test. Therefore, there are no BC modes when analyzing test-find-test d…'
• 20:4220:42, 10 January 2012 diff hist −15,875 Template:Rga crow extended →Test-Find-Test
• 20:4220:42, 10 January 2012 diff hist +94,736 N Template:Rga crow extended Created page with '=Crow Extended= <br> The most widely used traditional reliability growth tracking model, Crow-AMSAA, was presented in Chapter 5. Using this model for reliability growth analysis …'
• 20:4220:42, 10 January 2012 diff hist −94,715 Crow Extended →Crow Extended
• 20:3920:39, 10 January 2012 diff hist +2,833 N Template:Confidence bounds logistic rga Created page with '==Confidence Bounds== Least squares is used to estimate the parameters of the following Logistic model. ::<math>\ln (\frac{1}{{{{\hat{R}}}_{i}}}-1)=\ln (b)-k{{T}_{i}}</math> Th…'
• 20:3920:39, 10 January 2012 diff hist −2,799 Template:Logistic (reliability growth model) →Confidence Bounds
• 20:3820:38, 10 January 2012 diff hist +7,821 N Template:Parameter estimation logistic rga Created page with '==Parameter Estimation== <br> '''Example 1''' <br> Using the reliability growth data given in Table 8.1, do the following: <br> :1) Find a Gompertz curve that represents the data…'
• 20:3820:38, 10 January 2012 diff hist −7,783 Template:Logistic (reliability growth model) →Parameter Estimation
• 20:3820:38, 10 January 2012 diff hist +16,545 N Template:Logistic (reliability growth model) Created page with '=Logistic= The Logistic reliability growth model has an S-shaped curve and is given by [3]: where <math>b</math> and <math>k</math> are parameters. Similar to the analysis…'
• 20:3820:38, 10 January 2012 diff hist −16,506 Logistic →Logistic
• 20:3620:36, 10 January 2012 diff hist +7,075 N Template:Confidence bounds gompz Created page with '===Confidence Bounds=== <br> The approximate reliability confidence bounds under the Modified Gompertz model can be obtained using nonlinear regression. Additionally, the reliabi…'
• 20:3620:36, 10 January 2012 diff hist −7,048 Template:Modified gompertz model →Confidence Bounds
• 20:3520:35, 10 January 2012 diff hist +7,727 N Template:Parameter estimation gumpz Created page with '===Parameter Estimation=== To implement the Modified Gompertz growth model, initial values of the parameters <math>a</math> , <math>b</math> , <math>c</math> and <math>d</ma…'
• 20:3420:34, 10 January 2012 diff hist −7,697 Template:Modified gompertz model →Parameter Estimation
• 20:3420:34, 10 January 2012 diff hist +16,156 N Template:Modified gompertz model Created page with '==Modified Gompertz Model== Sometimes reliability growth data with an S-shaped trend cannot be described accurately by the Gompertz or Logistic (Chapter 8) curves. Since these tw…'
• 20:3320:33, 10 January 2012 diff hist −16,129 Template:Gompertz models (standard and modified) →Modified Gompertz Model
• 20:3220:32, 10 January 2012 diff hist +893 N Template:Cumulative reliability gumpz Created page with '==Cumulative Reliability== For many kinds of equipment, especially missiles and space systems, only success/failure data (also called discrete or attribute data) is obtained. Co…'
• 20:3220:32, 10 January 2012 diff hist −861 Template:Gompertz models (standard and modified) →Cumulative Reliability
• 20:3120:31, 10 January 2012 diff hist +6,946 N Template:Confidence bounds for the gompertz model Created page with '===Confidence Bounds for the Gompertz Model=== The approximate reliability confidence bounds under the Gompertz model can be obtained with nonlinear regression. Additionally, the…'
• 20:3120:31, 10 January 2012 diff hist −6,902 Template:Parameter estimation using least squares in nonlinear regression →Confidence Bounds for the Gompertz Model
• 20:3020:30, 10 January 2012 diff hist +11,863 N Template:Nonlinear regression gompz Created page with '===Nonlinear Regression=== Nonlinear regression is similar to linear regression, except that a curve is fitted to the data set instead of a straight line. Just as in the linear s…'
• 20:3020:30, 10 January 2012 diff hist −11,833 Template:Parameter estimation using least squares in nonlinear regression →Nonlinear Regression
• 20:3020:30, 10 January 2012 diff hist +2,232 N Template:Linear regression (least squares) gompz Created page with '===Linear Regression (Least Squares)=== The method of least squares requires that a straight line be fitted to a set of data points. If the regression is on <math>Y</math> , the…'
• 20:2920:29, 10 January 2012 diff hist −2,189 Template:Parameter estimation using least squares in nonlinear regression →Linear Regression (Least Squares)
• 20:2920:29, 10 January 2012 diff hist +21,114 N Template:Parameter estimation using least squares in nonlinear regression Created page with '==Parameter Estimation Using Least Squares in Nonlinear Regression== ===Linear Regression (Least Squares)=== The method of least squares requires that a straight line be fitted t…'