Results 31 to 40 of about 4,320,695 (246)

Reliability of animal counts and implications for the interpretation of trends

open access: yesEcology and Evolution, 2021
Population time series analysis is an integral part of conservation biology in the current context of global changes. To quantify changes in population size, wildlife counts only provide estimates because of various sources of error. When unaccounted for,
David Vallecillo   +6 more
doaj   +1 more source

New power-law tailed distributions emerging in $κ$-statistics [PDF]

open access: yesEuroPhysics Letters 133, 10002 (2021), 2022
Over the last two decades, it has been argued that the Lorentz transformation mechanism, which imposes the generalization of Newton's classical mechanics into Einstein's special relativity, implies a generalization, or deformation, of the ordinary statistical mechanics.
arxiv   +1 more source

Developmental Dyslexia, Reading Acquisition, and Statistical Learning: A Sceptic’s Guide

open access: yesBrain Sciences, 2021
Many theories have been put forward that propose that developmental dyslexia is caused by low-level neural, cognitive, or perceptual deficits. For example, statistical learning is a cognitive mechanism that allows the learner to detect a probabilistic ...
Xenia Schmalz   +2 more
doaj   +1 more source

Impact of Misdiagnosis in Case-Control Studies of Myalgic Encephalomyelitis/Chronic Fatigue Syndrome

open access: yesDiagnostics, 2023
Misdiagnosis of myalgic encephalomyelitis/chronic fatigue syndrome (ME/CFS) can occur when different case definitions are used by clinicians (relative misdiagnosis) or when failing the genuine diagnosis of another disease (misdiagnosis in a strict sense).
João Malato   +2 more
doaj   +1 more source

Type I error and power rates: A comparative analysis of techniques in differential item functioning

open access: yesInternational Journal of Assessment Tools in Education, 2023
The main purpose of this study is to examine the Type I error and statistical power ratios of Differential Item Functioning (DIF) techniques based on different theories under different conditions.
Bayram Bıçak   +1 more
doaj   +1 more source

Long-range memory model of trading activity and volatility [PDF]

open access: yes, 2006
Earlier we proposed the stochastic point process model, which reproduces a variety of self-affine time series exhibiting power spectral density S(f) scaling as power of the frequency f and derived a stochastic differential equation with the same long ...
B Kaulakys   +5 more
core   +2 more sources

The statistical power to detect cross‐scale interactions at macroscales

open access: yesEcosphere, 2016
Macroscale studies of ecological phenomena are increasingly common because stressors such as climate and land‐use change operate at large spatial and temporal scales. Cross‐scale interactions (CSIs), where ecological processes operating at one spatial or
Tyler Wagner   +4 more
doaj   +1 more source

Theory and practice of clinical trials in oncology and hematology

open access: yesОнкогематология, 2016
In the era of evidence-based medicine the main reason for the implementation of new treatment methods are the results of clinical trials. However, clinical trials is a separate area of knowledge, which is often little known to clinicians, that does not ...
N. V. Zhukov
doaj   +1 more source

Hypertension in pregnancy and statistical power [PDF]

open access: yesSao Paulo Medical Journal, 1996
Bothdrugshaveabout90percentefficacyinreducingblood pressure, butitisnotknown wichdrugcarriers lessriskofadverseeffectsforthefetus.Suppose thatonepercentoffetaldeathscouldbeattributed toonedrug,andtheotherdrugcould beattributed with0.5percent; thatmeans a50percent lesschance offetal deaths.
openaire   +5 more sources

Modeling power grids [PDF]

open access: yes, 2012
We present a method to construct random model power grids that closely match statistical properties of a real power grid.
Hamad, I. Abou   +3 more
core   +2 more sources

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