Results 221 to 230 of about 45,359 (268)
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Journal of Performance of Constructed Facilities, 2015
AbstractA regional bridge failure database was used to determine the bridge failure rate with associated causes. Using a sample population from one DOT over a 25-year period, the average number of bridge failures was approximately 1/4,700 annually with a 95% confidence interval from 1/6,900 to 1/2,700 annually.
Marvin W. Halling +2 more
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AbstractA regional bridge failure database was used to determine the bridge failure rate with associated causes. Using a sample population from one DOT over a 25-year period, the average number of bridge failures was approximately 1/4,700 annually with a 95% confidence interval from 1/6,900 to 1/2,700 annually.
Marvin W. Halling +2 more
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Journal of the American Statistical Association, 1971
Abstract In this article bivariate failure rate is defined, and it is shown that no absolutely continuous bivariate distribution with constant failure rate exists except in the special case when the marginals are independently distributed.
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Abstract In this article bivariate failure rate is defined, and it is shown that no absolutely continuous bivariate distribution with constant failure rate exists except in the special case when the marginals are independently distributed.
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The Journal of Retirement, 2016
The importance of determining how often a retirement strategy failed in the past, and how likely it is to fail in the future, can hardly be overstated. For this reason, the failure rate has become an essential tool when evaluating these strategies.
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The importance of determining how often a retirement strategy failed in the past, and how likely it is to fail in the future, can hardly be overstated. For this reason, the failure rate has become an essential tool when evaluating these strategies.
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Tests for the equality of failure rates
Biometrika, 1985Summary: A new statistic is proposed for testing the hypothesis \(H_ 0\) that two failure rates are equal against the alternative hypothesis \(H_ a\) that one failure rate dominates the other. Unbiasedness, asymptotic normality and consistency of the test against \(H_ a\) are shown.
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1999
Some considerations concerning the concept of failure rate are presented. For a semi-Markov process are given equations of Markov renewal type using the failure rates of passing from a state into another. The existence and uniqueness of the solutions is discussed.
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Some considerations concerning the concept of failure rate are presented. For a semi-Markov process are given equations of Markov renewal type using the failure rates of passing from a state into another. The existence and uniqueness of the solutions is discussed.
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2004
This chapter describes the process involved in failure rate and mode data collections. Various data collections and sources of data, along with ranges and levels of data are briefly discussed herein.
David Smith, Kenneth G L Simpson
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This chapter describes the process involved in failure rate and mode data collections. Various data collections and sources of data, along with ranges and levels of data are briefly discussed herein.
David Smith, Kenneth G L Simpson
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Current Opinion in Cardiology, 2016
Resting heart rate has long been thought to be a risk factor in cardiovascular disease and a prognostic factor in heart failure. β-Blockers were originally used in heart failure for their heart rate control abilities. However, they also have negative inotropic effects contributing to their overall benefit.
Alexander B. Zhai +2 more
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Resting heart rate has long been thought to be a risk factor in cardiovascular disease and a prognostic factor in heart failure. β-Blockers were originally used in heart failure for their heart rate control abilities. However, they also have negative inotropic effects contributing to their overall benefit.
Alexander B. Zhai +2 more
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2010
For a collection of devices, it is critically important to be able to understand the expected failure rate for the devices. For the supplier of such devices, the expected failure rate will be an important indicator of future warranty liability. For the customer, the expected failure rate will be an important indicator of future satisfaction.
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For a collection of devices, it is critically important to be able to understand the expected failure rate for the devices. For the supplier of such devices, the expected failure rate will be an important indicator of future warranty liability. For the customer, the expected failure rate will be an important indicator of future satisfaction.
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The reliability of failure rates
Microelectronics Reliability, 1973Abstract Failure rates of components play an important role in the design of large systems, some of which may have useful lifes of 25–40 yr. Studies over prolonged periods, closely observing and evaluating the failures in a number of systems, resulted in very favourable failure rates.
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IEEE Transactions on Reliability, 1970
Failure rate is the most commonly used term in reliability and related engineering interests, yet it is still not well understood by perhaps the majority of those using it. Indeed, more than one reliability treatise wrongly defines failure rate as a conditional probability density, i.e., wrong by the accepted criterion of what constitutes any ...
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Failure rate is the most commonly used term in reliability and related engineering interests, yet it is still not well understood by perhaps the majority of those using it. Indeed, more than one reliability treatise wrongly defines failure rate as a conditional probability density, i.e., wrong by the accepted criterion of what constitutes any ...
openaire +2 more sources