Results 11 to 20 of about 13,076,781 (294)

A two parameter ratio-product-ratio estimator using auxiliary information [PDF]

open access: yes, 2012
We propose a two parameter ratio-product-ratio estimator for a finite population mean in a simple random sample without replacement following the methodology in Ray and Sahai (1980), Sahai and Ray (1980), Sahai and Sahai (1985) and Singh and Ruiz Espejo (
Chami, Peter S.   +2 more
core   +3 more sources

Likelihood-Ratio-Based Biometric Verification [PDF]

open access: yes, 2004
The paper presents results on optimal similarity measures for biometric verification based on fixed-length feature vectors. First, we show that the verification of a single user is equivalent to the detection problem, which implies that, for single-user ...
Bazen, Asker M., Veldhuis, Raymond N.J.
core   +4 more sources

Sex ratios [PDF]

open access: yesHeredity, 2002
Sex ratio theory attempts to explain variation at all levels (species, population, individual, brood) in the proportion of offspring that are male (the sex ratio). In many cases this work has been extremely successful, providing qualitative and even quantitative explanations of sex ratio variation.
West, Stuart A   +2 more
openaire   +6 more sources

What’s the Risk: Differentiating Risk Ratios, Odds Ratios, and Hazard Ratios? [PDF]

open access: yesCureus, 2020
Risk ratios, odds ratios, and hazard ratios are three common, but often misused, statistical measures in clinical research. In this paper, the authors dissect what each of these terms define, and provide examples from the medical literature to illustrate each of these statistical measures.
George, Andrew   +2 more
openaire   +2 more sources

Interdisciplinariedad y universidad reflexiones desde la facultad de derecho de la unaula

open access: yesRatio Juris, 2008
La búsqueda de la calidad es un imperativo para todas las instituciones que componen el sistema sociedad, pero para las instituciones de educación superior es, además, un compromiso ético- oral y político.
Hernando Salcedo Gutiérrez   +2 more
doaj   +1 more source

Sex ratios [PDF]

open access: yesCurrent Biology, 2017
Jennions et al. introduce the different kinds of sex ratio and their biology.
Jennions, Michael D.   +3 more
openaire   +3 more sources

John Paul II – Particular Significance and Theological Portrait

open access: yesPolonia Sacra, 2020
Święty Papież Jan Paweł II był „magnus”, co oznacza wielki. Z wielu powodów Jan Paweł II zasłużył na ten tytuł: za swój nowatorski apostolat i swoją pracę duszpasterską, a także za nauczanie.
Carlos Pereira
doaj   +1 more source

Unavoidable Destroyed Exergy in Crude Oil Pipelines due to Wax Precipitation

open access: yesEntropy, 2019
Based on the technological requirements related to waxy crude oil pipeline transportation, both unavoidable and avoidable destroyed exergy are defined.
Qinglin Cheng   +5 more
doaj   +1 more source

Isotopic Ratio, Isotonic Ratio, Isobaric Ratio and Shannon Information Uncertainty [PDF]

open access: yesCommunications in Theoretical Physics, 2014
The isoscaling and the isobaric yield ratio difference (IBD) probes, which both are constructed by yield ratio of fragment, provide cancelation of parameters. The information entropy theory is introduced to explain the physical meaning of the isoscaling and IBD probes.
Ma, Chun-Wang, Wei, Hui-Ling
openaire   +2 more sources

Predicting Electromagnetic Performance Under Wrinkling in Thin-Film Phased Arrays

open access: yesAerospace
Deployable thin-film antennas deliver large aperture gains and high stowage efficiency for spaceborne phased arrays but suffer wrinkling-induced planarity loss and radiation distortion.
Xiaotao Zhou   +7 more
doaj   +1 more source

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