Results 31 to 40 of about 359,536 (206)

ACCURACY OF ESTIMATES OF VOLUME FRACTION

Image Analysis and Stereology, 2011
When estimating a volume fraction VV from point count fractions PP using Delesse's principle VV = PP, very little information on the accuracy of the estimator can be obtained from the basic theory of stereology.
Joanne Chia, Adrian Baddeley
doaj   +1 more source

Delta Methods in Enveloping Algebras of Lie Superalgebras [PDF]

Transactions of the American Mathematical Society, 1992
Let L L be a Lie superalgebra over a field
Bergen, J., Passman, D.S.
openaire   +2 more sources

EEG–fMRI mapping of asymmetrical delta activity in a patient with refractory epilepsy is concordant with the epileptogenic region determined by intracranial EEG [PDF]

, 2006
We studied a patient with refractory focal epilepsy using continuous EEG-correlated fMRI. Seizures were characterized by head turning to the left and clonic jerking of the left arm, suggesting a right frontal epileptogenic region.
Walker, M.C., Lemieux, L., Hamandi, Khalid, Smith, Shelagh, Laufs, Helmut, Walker, Matthew C., Smith, S., Lemieux, Louis, Duncan, John S., Duncan, J.S., Laufs, H., Hamandi, K., Scott, Catherine, Scott, C.   +13 more
core   +1 more source

The performance of delta check methods.

Clinical Chemistry, 1979
Abstract The percentage of mislabeled specimens detected (true-positive rate) and the percentage of correctly labeled specimens misidentified (false-positive rate) were computed for three previously proposed delta check methods and two linear discriminant functions.
L B, Sheiner, L A, Wheeler, J K, Moore
openaire   +2 more sources

An Improved Delta-Centralization Method for Population Stratification [PDF]

Human Heredity, 2011
Dadd et al. [Hum Hered 2010;69:285–294] recently criticized our delta-centralization (DC) method of controlling for population stratification (PS) and concluded that DC does not work. To explore our method, the authors simulated data under the Balding-Nichols (BN) model, which is more general than the model we had used in our simulations.
Prakash, Gorroochurn, Susan E, Hodge, Gary A, Heiman, David A, Greenberg   +3 more
openaire   +2 more sources

Derivation of a Closed-Form Asymptotic Variance for the Coefficient of Variation Under the Reparameterized Birnbaum–Saunders Distribution

Axioms
This study develops a tractable, closed-form expression for the asymptotic variance of the coefficient of variation (CV) estimator under a reparameterized Birnbaum–Saunders (BirSau) distribution. Using the method of moments, we derive analytical formulas
Tossapol Phoophiwfa, Piyapatr Busababodhin, Andrei Volodin, Sujitta Suraphee   +3 more
doaj   +1 more source

Variance models of the last age interval and their impact on life expectancy at subnational scales

Demographic Research, 2016
Background: The Chiang method is the most widely accepted standard for estimating life expectancy (LE) at subnational scales; it is the only method that provides an equation for the LE variance.
Ernest Lo, Dan Vatnik, Andrea Benedetti, Robert Bourbeau   +3 more
doaj   +1 more source

Experimental Comparison of Preferential vs. Common Delta Connections for the Star-Delta Starting of Induction Motors

Energies, 2021
Although this is a fact that is not very explored in the literature, there are two possible forms to connect the stator winding of an induction motor in the delta.
José Augusto Itajiba, Cézar Armando Cunha Varnier, Sergio Henrique Lopes Cabral, Stéfano Frizzo Stefenon, Valderi Reis Quietinho Leithardt, Raúl García Ovejero, Ademir Nied, Kin-Choong Yow   +7 more
doaj   +1 more source

A Study on the Optimal Ratio of Research and Development Investment in the Energy Sector: An Empirical Analysis in South Korea

Energies, 2019
The necessity for energy research and development (ER&D) is increasing as greenhouse gases and climate change are becoming global issues. To support sustainable economic growth through ER&D, it is necessary to examine the optimal ratio of ER& ...
Juyong Lee, Youngsang Cho, Jungwoo Shin
doaj   +1 more source

A Hybrid Data-Differencing and Compression Algorithm for the Automotive Industry

Entropy, 2022
We propose an innovative delta-differencing algorithm that combines software-updating methods with LZ77 data compression. This software-updating method relates to server-side software that creates binary delta files and to client-side software that ...
Sabin Belu, Daniela Coltuc
doaj   +1 more source