Results 231 to 240 of about 6,825,486 (291)

Are electromigration failures lognormally distributed?

28th Annual Proceedings on Reliability Physics Symposium, 1990
Electromigration lifetests performed on a variety of Al alloy films to study the form of the failure distribution are discussed. Sample sizes ranged from 35 to 120, allowing exploration near the 1% failure level. Results show that the lognormal rather than the logarithmic extreme value distribution holds where the grain size is smaller than the ...
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Lognormal Distributions and Properties

1999
If Y is normally distributed with mean μ and variance σ2, then the random variable X defined by the relationship Y =log(X - γ) is distributed as lognormal, and is denoted as lognormal(γ,μ,σ2).
N. Balakrishnan, William W. S. Chen
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The Normal and Lognormal Distributions

2012
In Chap. 6, we discussed discrete random variables and their distributions. Particularly, we focused on the means and variances of binomial, hypergeometric, and Poisson distributions. Although the distributions derived from these discrete random variables are useful, they are limited.
Cheng-Few Lee, John C. Lee, Alice C. Lee
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Near Lognormal Distribution

Journal of Hydrologic Engineering, 2002
The lognormal distribution is frequently used in hydrological studies. However, the distribution is in the form of an integral that cannot be expressed in the form of elementary functions. Thus, the lognormal distribution cannot be used for analytical purposes such as the application of the inverse transform method for generation of a sequence of ...
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The Lognormal Distribution.

The Economic Journal, 1957
L. R. Klein, J. Aitchison, J. A. C. Brown   +2 more
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Pseudo‐Lognormal Distributions

Ecology, 1981
Some statistical “distributions” which, when plotted on an “arithmetical” basis, do not in the least resemble a normal or Gaussian distribution, become very similar to one when plotted on a logarithmic or “geometrical” basis. In this paper I examine in particular the difference of two declining exponential curves, and, as a special case, a simple ...
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Inverse Gaussian versus lognormal distribution in earthquake forecasting: keys and clues

Journal of Seismology, 2019
S. Pasari
semanticscholar   +1 more source

Lognormal Distributions

Nature, 1945
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MLE Solution Research for a Certain Kind of Two-dimensional Lognormal Distribution Function

Communications in statistics. Simulation and computation, 2016
Yichuan Zhao, Y. Hsu
semanticscholar   +1 more source

Bayesian Estimation and Prediction for a Hybrid Censored Lognormal Distribution

IEEE Transactions on Reliability, 2016
Sukhdev Singh, Y. Tripathi
semanticscholar   +1 more source