Zobrazeno 1 - 7
of 7
pro vyhledávání: '"Dan Brawn"'
Autor:
Graham Upton, Dan Brawn
Data analysis has been a hot topic for a number of years, and many future data scientists have backgrounds that are relatively light in mathematics. This slim volume provides a very approachable guide to the techniques of the subject, designed with s
Autor:
Dan Brawn
Publikováno v:
Atmospheric Science Letters. 16:386-390
This article outlines an alternative maximum likelihood gamma parameter estimator for grouped and truncated data. Such data might be produced by traditional disdrometer instruments for recording rain drop sizes. The method is an adaptation of a log-l
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2b2a52ec322929332a612774527eab0a
https://doi.org/10.1002/asl2.572
https://doi.org/10.1002/asl2.572
Autor:
Dan Brawn
Publikováno v:
Atmospheric Science Letters. 16:355-358
Bias in a recently introduced closed-form estimator for gamma parameters is described via simulations over a wide range of feasible parameters. The simulated data are lower truncated and grouped with a Joss-Waldvogel disdrometer bin regime. A crude m
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::44e66d0040bbe202d2bd679b84927851
https://doi.org/10.1002/asl2.567
https://doi.org/10.1002/asl2.567
Autor:
Dan Brawn, Graham J. G. Upton
Publikováno v:
Atmospheric Research. 87:66-79
Atmospheric raindrop size distributions are believed to be often well approximated by gamma distributions. However, since disdrometers cannot measure the numbers of very small drops, the parameters of these distributions must be estimated from inform
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6d7de108a2dcc1ee427b09407becf5d2
https://doi.org/10.1016/j.atmosres.2007.07.006
https://doi.org/10.1016/j.atmosres.2007.07.006
Autor:
Dan Brawn, Graham J. G. Upton
Publikováno v:
Environmetrics. 18:633-645
Gamma distributions are used by atmospheric scientists to model the distribution of raindrop diameters. However, the recording instruments (known as disdrometers) are unable to record the sizes of the smallest drops, so that the recorded distribution
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::323658834b72f83db954d272c165a317
https://doi.org/10.1002/env.841
https://doi.org/10.1002/env.841
Autor:
Dan Brawn, Graham J. G. Upton
Publikováno v:
Atmospheric Science Letters. 9:245-247
We consider concurrent data from two makes of laser disdrometer, fitting gamma distributions to each minute's data. We show that, as has been suggested elsewhere, there does appear to be a relationship between the shape and slope parameters. However,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e5541b0f9803540152c98e03a7602cf6
https://doi.org/10.1002/asl.198
https://doi.org/10.1002/asl.198
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