Results 21 to 30 of about 1,743,511 (277)

Re-interpreting conventional interval estimates taking into account bias and extra-variation

BMC Medical Research Methodology, 2006
Background The study design with the smallest bias for causal inference is a perfect randomized clinical trial. Since this design is often not feasible in epidemiologic studies, an important challenge is to model bias properly and take random and ...
Seaman Shaun R, Höfler Michael
doaj   +1 more source

Spatial and Temporal Extrapolation of Disdrometer Size Distributions Based on a Lagrangian Trajectory Model of Falling Rain [PDF]

, 2009
Methodologies to improve disdrometer processing, loosely based on mathematical techniques common to the field of particle flow and fluid mechanics, are examined and tested.
Jones, W. Linwood, Kasparis, Takis, Lane, John E., Metzger, Philip T.   +3 more
core   +3 more sources

Cladoceran birth and death rates estimates [PDF]

, 1987
I. Birth and death rates of natural cladoceran populations cannot be measured directly. Estimates of these population parameters must be calculated using methods that make assumptions about the form of population growth.
Argentesi F., Caswell H., Cooper W.E., DeMott W.R., DeMott W.R., Dorazio R. M., Edmondson W.T., Edmondson W.T., Elstcr H.-J., Gehrs C.W., Hairstan N.G., Haney J. F., Keen R., Keyfitz N., Kirsch S., Lampert W., Leslie P.H., Lynch M., Lynch M., Muck P., Paloheimo J.E., Polishchuk L.V., Polishchuk L.V., Polishchuk L.V., Pollard J.H., Prepas E., Ricker W. E., Rigler F. H., Rigler F.H., Romanovski Y.E., Seitz A., Taylor B. E., Threlkeld S.T., Winberg G.G., Wright I.C.   +34 more
core   +1 more source

Quantile estimates of entropy uncertainty for distributions supported on bounded interval [PDF]

ITM Web of Conferences
Formulas for calculating the Shannon information entropy and the entropy uncertainty interval are obtained, which are based on calculating quantile estimates of random variable distributions and are set over a limited range of random variable values ...
Polosin Vitaly G
doaj   +1 more source

BOOTSTRAP METHODS FOR INVESTIGATING THE ROCK MASS ZONAL FRACTURE AROUND UNDERGROUND WORKINGS

Вестник Дагестанского государственного технического университета: Технические науки, 2021
Objective. Investigation of the problems of zonal disintegration of rocks around deep underground workings in extremely small sampling, arising in geomechanical phenomena and processes in rock mass during mining. Methods.
A. S. Losev
doaj   +1 more source

Estimating rate of occurrence of rare events with empirical Bayes : a railway application [PDF]

, 2007
Classical approaches to estimating the rate of occurrence of events perform poorly when data are few. Maximum likelihood estimators result in overly optimistic point estimates of zero for situations where there have been no events.
Bedford, Tim, Quigley, John, Walls, Lesley   +2 more
core   +1 more source

BOOTSTRAPPING METHODS FOR CONSTRUCTING CONFIDENCE INTERVALS FOR THE ESTIMATION OF MODEL PARAMETERS OF THE ZONAL DISINTEGRATION OF ROCKS AROUND UNDERGROUND EXCAVATIONS

Вестник Дагестанского государственного технического университета: Технические науки, 2018
. Objectives The study of geomechanical phenomena and processes in rock massifs, manifested during the extraction of minerals, results in the need for research methods for solving the problem of zonal disintegration of rocks around deep underground ...
Alexsandr S. Losev
doaj   +1 more source

On the Hausdorff measure of non-compactness for the parametrized Prokhorov metric [PDF]

, 2016
We quantify Prokhorov's Theorem by establishing an explicit formula for the Hausdorff measure of non-compactness (HMNC) for the parametrized Prokhorov metric on the set of Borel probability measures on a Polish space.
Berckmoes, Ben
core   +3 more sources

Estimation of Parameters of the GIE Distribution Under Progressive Type-I Censoring

Journal of Statistical Theory and Applications (JSTA), 2021
In this paper, we consider generalized inverted exponential distribution which is capable of modeling various shapes of failure rates and aging processes.
Mahmoud R. Mahmoud, Hiba Z. Muhammed, Ahmed R. El-Saeed, Ashraf D. Abdellatif   +3 more
doaj   +1 more source

The effects of sampling regime on the analysis of movements of overwintering female caribou in east-central Alaska

Rangifer, 2005
Global Positioning System (GPS) technology enables research of animal movements at finer levels of spatial and temporal resolution than previous methodologies allowed.
Kyle Joly
doaj   +1 more source