Results 21 to 30 of about 481,284 (284)

Underestimation of COVID-19 mortality during the pandemic

open access: yesERJ Open Research, 2021
Background There has been considerable international variation in mortality during the COVID-19 pandemic. The objective of this study was to investigate the differences between mortality registered as due to COVID-19 and the excess all-cause mortality ...
Stacey Kung   +7 more
doaj   +1 more source

Weight underestimation and body size dissatisfaction among black African adults with obesity: Implications for health promotion

open access: yesAfrican Journal of Primary Health Care & Family Medicine, 2019
Background: Body image perception has an impact on modifiable cardiovascular disease (CVD) risk, lifestyle and psychological health in many populations.
Kufre J. Okop   +2 more
doaj   +1 more source

The Underestimation Of Egocentric Distance: Evidence From Frontal Matching Tasks [PDF]

open access: yes, 2011
There is controversy over the existence, nature, and cause of error in egocentric distance judgments. One proposal is that the systematic biases often found in explicit judgments of egocentric distance along the ground may be related to recently observed
A Higashiyama   +44 more
core   +2 more sources

Electronic friction-based vibrational lifetimes of molecular adsorbates: Beyond the independent atom approximation [PDF]

open access: yes, 2015
We assess the accuracy of vibrational damping rates of diatomic adsorbates on metal surfaces as calculated within the local-density friction approximation (LDFA).
Juaristi, J. Iñaki   +3 more
core   +4 more sources

Vast (but avoidable) underestimation of global biodiversity.

open access: yesPLoS Biology, 2021
The number of species on Earth is highly uncertain. A recent study has suggested that there are less than 2 million prokaryotic species on Earth; this Formal Comment suggests instead that there are more likely hundreds of millions or billions of species,
John J Wiens
doaj   +1 more source

Modified estimator of the contribution rates of population eigenvalues [PDF]

open access: yes, 2012
Modified estimators for the contribution rates of population eigenvalues are given under an elliptically contoured distribution. These estimators decrease the bias of the classical estimator, i.e. the sample contribution rates.
Sheena, Yo
core   +3 more sources

Antimatter underestimated [PDF]

open access: yesNature, 1987
We warn of the potential nuclear proliferation's consequences of military applications of nano- or microgram amounts of antimatter, such as triggering of high-yield thermonuclear explosions, laser pumping, compact sources of energy, directed-energy beams, and portable sources of muons.
Gsponer, Andre, Hurni, Jean-Pierre
openaire   +2 more sources

Testing the order of a model

open access: yes, 2006
This paper deals with order identification for nested models in the i.i.d. framework. We study the asymptotic efficiency of two generalized likelihood ratio tests of the order.
Chambaz, Antoine
core   +1 more source

Fast approximation of visibility dominance using topographic features as targets and the associated uncertainty [PDF]

open access: yes, 2003
An approach to reduce visibility index computation time andmeasure the associated uncertainty in terrain visibility analysesis presented. It is demonstrated that the visibility indexcomputation time in mountainous terrain can be reduced substantially ...
Rana, S
core   +1 more source

Assessing the Precision of Surgery Duration Estimation: A Retrospective Study

open access: yesJournal of Multidisciplinary Healthcare, 2023
Afnan Aljaffary,1 Fatimah AlAnsari,1 Abdulaleem Alatassi,2 Mohammed AlSuhaibani,3 Ammar Alomran4 1Health Information Management and Technology Department, College of Public Health, Imam Abdulrahman Bin Faisal University, Dammam, Saudi Arabia ...
Aljaffary A   +4 more
doaj  

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