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Combined display of all available logs of ReliaWiki. You can narrow down the view by selecting a log type, the username (case-sensitive), or the affected page (also case-sensitive).

• 20:25, 6 June 2012 Lisa Hacker talk contribs deleted page New21 Example 2 (content was: 'Twelve electronic devices were put into a continuous accelerated test. The accelerated stresses were temperature and voltage, with use level conditions of…' (and the only contributor was 'Steve Sharp'))
• 20:24, 6 June 2012 Lisa Hacker talk contribs deleted page A Logistic Distribution Example (content was: 'The lifetime of a mechanical valve is known to follow a logistic distribution. Ten units were tested for 28 months and the following months-to-failure dat…' (and the only contributor was 'Steve Sharp'))
• 20:24, 6 June 2012 Lisa Hacker talk contribs deleted page Loglogistic Probability Density Function (content was: 'The loglogistic distribution is a two-parameter distribution with parameters <math>\mu </math> and <math>\sigma </math> . The <math>pdf</math> for th…' (and the only contributor was 'Steve Sharp'))
• 20:24, 6 June 2012 Lisa Hacker talk contribs deleted page ALT Chapter14 (content was: '=General Examples & Case Studies= In this chapter we present some application examples utilizing ReliaSoft's ALTA and ALTA PRO. We assume that you have previously consulted the ALTA User's Guide and familiarized yourself with the softwar…')
• 20:23, 6 June 2012 Lisa Hacker talk contribs deleted page ALT Chapter11 (content was: '=Multivariable Relationships: General Log-Linear and Proportional Hazards= <br> ==Introduction== <br> So far in this reference the life-stress relationships presented have been either single stress relationships (Chapters 6, 7, and 8) or…')
• 20:22, 6 June 2012 Lisa Hacker talk contribs deleted page New5 Bounds on Reliability (content was: 'The reliability of the Gumbel distribution is given by: ::<math>\widehat{R}(T;\hat{\mu },\hat{\sigma })={{e}^{-{{e}^{{\hat{z}}}}}}</math> where: ::<…' (and the only contributor was 'Steve Sharp'))
• 20:22, 6 June 2012 Lisa Hacker talk contribs deleted page Mixed Weibull, Other Uses (content was: '====Reliability Bathtub Curves==== A reliability bathtub curve is nothing more than the graph of the failure rate versus time, over the life of the produc…' (and the only contributor was 'Steve Sharp'))
• 20:21, 6 June 2012 Lisa Hacker talk contribs deleted page Appendix 6.A: Arrhenius Confidence Bounds (content was: '==Approximate Confidence Bounds for the Arrhenius-Exponential== <br> There are different methods for computing confidence bounds. ALTA utilizes confidence bounds that are based on the asymptotic theory for maximum likelihood estimates, m…')
• 20:21, 6 June 2012 Lisa Hacker talk contribs deleted page ALT Chapter9 (content was: '=Temperature-Humidity Relationship= <br> ==Introduction== <br> The Temperature-Humidity (T-H) relationship, a variation of the Eyring relationship, has been proposed for predicting the life at use conditions when temperature and humid…')
• 20:20, 6 June 2012 Lisa Hacker talk contribs deleted page New Expected Failure Time Plots (content was: 'One of the new features in Weibull++ 8 is the Expected Failure Time Calculation (EFTC) tool. Given the population size and the failure time distribution \…' (and the only contributor was 'Steve Sharp'))
• 20:19, 6 June 2012 Lisa Hacker talk contribs deleted page The Loglogistic Reliability Function (content was: 'The reliability for a mission of time <math>T</math> , starting at age 0, for the loglogistic distribution is determined by: ::<math>R=\frac{1}{1+{{e}^{…' (and the only contributor was 'Steve Sharp'))
• 20:19, 6 June 2012 Lisa Hacker talk contribs deleted page The Loglogistic Reliable Life (content was: 'The logistic reliable life is: ::<math>\mathop{T_{R}}={{e}^{\mu +\sigma [\ln (1-R)-\ln (R)]}}</math>' (and the only contributor was 'Steve Sharp'))
• 20:19, 6 June 2012 Lisa Hacker talk contribs deleted page The Gumbel Reliable Life (content was: 'The Gumbel reliable life is given by: ::<math>\mathop{{{T}_{R}}=\mu +\sigma [\ln (-\ln (R))]}</math>' (and the only contributor was 'Steve Sharp'))
• 20:18, 6 June 2012 Lisa Hacker talk contribs deleted page New5 Bounds on Time (content was: 'The bounds around time for a given Gumbel percentile (unreliability) are estimated by first solving the reliability equation with respect to time, as foll…' (and the only contributor was 'Steve Sharp'))
• 20:18, 6 June 2012 Lisa Hacker talk contribs deleted page New 6 Introduction (content was: 'Non-parametric recurrence data analysis provides a nonparametric graphical estimate of the mean cumulative number or cost of recurrence per unit versus ag…' (and the only contributor was 'Steve Sharp'))
• 20:18, 6 June 2012 Lisa Hacker talk contribs deleted page Example 4 (content was: 'The following table gives the failure times of the air-condition unit of an aircraft. The observation is ended by the time of the last failure [3]. ::<m…' (and the only contributor was 'Steve Sharp'))
• 20:18, 6 June 2012 Lisa Hacker talk contribs deleted page Solution to Example 4 (content was: 'Enter the data into a Parametric RDA Specialized Folio in Weibull++. Choose 3 under Parameters and Type I under Settings. Keep the default simulation sett…' (and the only contributor was 'Steve Sharp'))
• 20:17, 6 June 2012 Lisa Hacker talk contribs deleted page New The Mixed Weibull Distribution (content was: '= Sections = #New Other Distributions #Mixed Weibull Distribution #Background #Mixed Weibull Parameter Estimation #Mixed Weibull, Other …' (and the only contributor was 'Steve Sharp'))
• 20:17, 6 June 2012 Lisa Hacker talk contribs deleted page New3 Bounds on Time (content was: 'The bounds around time for a given logistic percentile (unreliability) are estimated by first solving the reliability equation with respect to time as fol…' (and the only contributor was 'Steve Sharp'))
• 20:16, 6 June 2012 Lisa Hacker talk contribs deleted page New5 Probability Paper (content was: 'The form of the Gumbel probability paper is based on a linearization of the <math>cdf</math> . From Eqn. (UnrGumbel): ::<math>\mathop{z=\ln (-\ln (1-F)…' (and the only contributor was 'Steve Sharp'))
• 20:16, 6 June 2012 Lisa Hacker talk contribs deleted page New21 Distributions (content was: 'A statistical distribution is fully described by its <math>pdf</math> (probability density function). In the previous sections, we used the definition o…' (and the only contributor was 'Steve Sharp'))
• 20:16, 6 June 2012 Lisa Hacker talk contribs deleted page Foreword (content was: 'This reference has been designed to accompany ReliaSoft's Accelerated Life Test Analysis software packages, ALTA 7 Standard and ALTA 7 PRO. The treatment …' (and the only contributor was 'Steve Sharp'))
• 20:15, 6 June 2012 Lisa Hacker talk contribs deleted page Chapter 1: Introduction (content was: '=Sections= #Foreword #Modifications and Enhancements #About This Reference' (and the only contributor was 'Steve Sharp'))
• 20:15, 6 June 2012 Lisa Hacker talk contribs deleted page New21 Example 9 (content was: 'An electronic component was subjected to a voltage stress, starting at 2V (use stress level) and increased to 7V in stepwise increments. The following ste…' (and the only contributor was 'Steve Sharp'))
• 20:15, 6 June 2012 Lisa Hacker talk contribs deleted page New21 Example 4 (content was: 'A tensile component of a landing gear was put through an accelerated reliability test to determine whether the life goal would be achieved under the desig…' (and the only contributor was 'Steve Sharp'))
• 20:14, 6 June 2012 Lisa Hacker talk contribs deleted page Probability Paper (content was: 'The form of the Logistic probability paper is based on linearizing the <math>cdf</math> . From Eqn. (UnR fcn), <math>z</math> can be calculated as a f…' (and the only contributor was 'Steve Sharp'))
• 20:14, 6 June 2012 Lisa Hacker talk contribs deleted page Analysis of Censored Data (content was: 'So far we have discussed parameter estimation methods for complete data only. We will expand on that approach in this section by including the maximum lik…' (and the only contributor was 'Steve Sharp'))
• 20:14, 6 June 2012 Lisa Hacker talk contribs deleted page New Life Distributions (content was: 'center|200x200px')
• 20:13, 6 June 2012 Lisa Hacker talk contribs deleted page A Loglogistic Distribution Example (content was: 'Determine the loglogistic parameter estimates for the data given in Table 10.3. ::::<math>\overset{{}}{\mathop{\text{Table 10}\text{.3 - Test data}}}</m…' (and the only contributor was 'Steve Sharp'))
• 20:13, 6 June 2012 Lisa Hacker talk contribs deleted page Apporximating the System CDF (content was: '#REDIRECT Approximating the System CDF' (and the only contributor was 'Steve Sharp'))
• 20:12, 6 June 2012 Lisa Hacker talk contribs deleted page Solution to Example 1 (content was: 'The MCF estimate is obtained as follows: ::<math>\begin{matrix} ID & Months ({{t}_{i}}) & State & {{r}_{i}} & 1/{{r}_{i}} & {{M}^{*}}({{t}_{i}}) \\ …' (and the only contributor was 'Steve Sharp'))
• 20:12, 6 June 2012 Lisa Hacker talk contribs deleted page The GRP Model (content was: 'In this model, the concept of virtual age is introduced. Denote by <math>{{t}_{1}},{{t}_{2}},\cdots ,{{t}_{n}}</math> the successive failure times and l…' (and the only contributor was 'Steve Sharp'))
• 20:12, 6 June 2012 Lisa Hacker talk contribs deleted page Bounds of Conditional Reliability (content was: 'Given mission start time <math>{{t}_{0}}</math> and mission time <math>T</math> , the conditional reliability can be calculated by: ::<math>R(T|{{t}_…' (and the only contributor was 'Steve Sharp'))
• 20:12, 6 June 2012 Lisa Hacker talk contribs deleted page New Parametric Recurrent Events Data Analysis (content was: 'Weibull++'s Parametric RDA Specialized Folio is a tool to model recurrent event data. It can capture the trend, estimate the rate and predict the total nu…' (and the only contributor was 'Steve Sharp'))
• 20:11, 6 June 2012 Lisa Hacker talk contribs deleted page Newer The Generalized Gamma Distribution (content was: '= Sections = #Generalized Gamma Probability Density Function #Generalized Gamma Reliability Function #Generalized Gamma Failure Rate Function …' (and the only contributor was 'Steve Sharp'))
• 20:11, 6 June 2012 Lisa Hacker talk contribs deleted page The Logistic Reliable Life (content was: 'The logistic reliable life is given by: ::<math>\mathop{T_{R}=\mu +\sigma [\ln (1-R)-\ln (R)]}</math>' (and the only contributor was 'Steve Sharp'))
• 20:10, 6 June 2012 Lisa Hacker talk contribs deleted page Newer The Normal Distribution (content was: 'The normal distribution, also known as the Gaussian distribution, is the most widely-used general purpose distribution. It is for this reason that it is i…' (and the only contributor was 'Steve Sharp'))
• 20:10, 6 June 2012 Lisa Hacker talk contribs deleted page New The Normal Distribution (content was: '= Sections = #Newer The Normal Distribution #Newer Fisher Matrix Confidence Bounds #Newer Likelihood Ratio Confidence Bounds' (and the only contributor was 'Steve Sharp'))
• 20:10, 6 June 2012 Lisa Hacker talk contribs deleted page Distribution Characteristics (content was: 'For <math>\sigma >1</math> : ::• <math>f(T)</math> decreases monotonically and is convex. Mode and mean do not exist. For <math>\sigma =1</math> :…' (and the only contributor was 'Steve Sharp'))
• 20:09, 6 June 2012 Lisa Hacker talk contribs deleted page NEW The Loglogistic Distribution (content was: 'As may be indicated by the name, the loglogistic distribution has certain similarities to the logistic distribution. A random variable is loglogistically distributed if the logarithm of the random variable is logistically distributed. Be…')
• 20:09, 6 June 2012 Lisa Hacker talk contribs deleted page New5 Bounds on the Parameters (content was: 'The lower and upper bounds on the mean, <math>\widehat{\mu }</math> , are estimated from: ::<math>\begin{align} {{\mu }_{U}}= & \widehat{\mu }+{{K}_…' (and the only contributor was 'Steve Sharp'))
• 20:09, 6 June 2012 Lisa Hacker talk contribs deleted page Logistic Probability Density Function (content was: 'The logistic <math>pdf</math> is given by: ::<math>\begin{align} f(T)=&\tfrac{{{e}^{z}}}{\sigma {{(1+{{e}^{z}})}^{2}}} \\ z=&\tfrac{t-\mu }{\sig…' (and the only contributor was 'Steve Sharp'))
• 20:08, 6 June 2012 Lisa Hacker talk contribs deleted page New The Logistic Distribution (content was: 'The logistic distribution has been used for growth models, and is used in a certain type of regression known as the logistic regression. It has also appli…' (and the only contributor was 'Steve Sharp'))
• 20:08, 6 June 2012 Lisa Hacker talk contribs deleted page The Mean Cumulative Function (MCF) for Recurrence Data (content was: 'In non-parametric analysis of recurrent events data, each population unit can be described by a cumulative history function for the cumulative number of r…' (and the only contributor was 'Steve Sharp'))
• 20:07, 6 June 2012 Lisa Hacker talk contribs deleted page New Non-Parametric Recurrent Events Data Analysis (content was: 'Recurrent Events Data Analysis, also called Recurrence Data Analysis (RDA), can be used in various applied fields such as reliability, medicine, social s…' (and the only contributor was 'Steve Sharp'))
• 20:07, 6 June 2012 Lisa Hacker talk contribs deleted page New Degradation Data Analysis (content was: 'Given that products are more frequently being designed with higher reliability and developed in a shorter amount of time, it is often not possible to test…' (and the only contributor was 'Steve Sharp'))
• 20:06, 6 June 2012 Lisa Hacker talk contribs deleted page Warranty Data Entry Types (content was: 'Weibull++ allows for data entry utilizing three common formats for storing sales and returns information. Specifically: ::# Nevada Chart Format ::# Time-…' (and the only contributor was 'Steve Sharp'))
• 20:06, 6 June 2012 Lisa Hacker talk contribs deleted page Constant Failure Rate/Chi-Squared Test Design (content was: 'Another method for designing tests for products that have an assumed constant failure rate, or exponential life distribution, draws on the chi-squared dis…' (and the only contributor was 'Steve Sharp'))
• 20:06, 6 June 2012 Lisa Hacker talk contribs deleted page Estimation of the Weibull Parameters (content was: 'The estimates of the parameters of the Weibull distribution can be found graphically via probability plotting paper, or analytically, either using least s…' (and the only contributor was 'Steve Sharp'))
• 20:05, 6 June 2012 Lisa Hacker talk contribs deleted page Distributions (content was: 'A statistical distribution is fully described by its <math>pdf</math> (or probability density function). In the previous sections, we used the definition …' (and the only contributor was 'Steve Sharp'))