Results 1 to 10 of about 2,058,289 (307)

Transverse and Longitudinal Bose-Einstein Correlations in ... Annihilation

open access: yes, 1997
: We show how a difference in the correlation length longitudinally and transversely, with respect to the jet axis in e + e \Gamma annihilation, arises naturally in a model for Bose-Einstein correlations based on the Lund string model.
Longitudinal Bose-einstein Correlations   +1 more
core  

Analyzing Longitudinal Data with Non-ignorable Missing

open access: yes, 2006
In longitudinal studies, data are often missing despite every attempt made to collect complete data. When the missingness is informative and hence not ignorable, it is generally difficult to analyze non-ignorable missing (NIM) data since the ...
Zhu, Liansheng
core  

Correction: The UK Coronavirus Job Retention Scheme and diet, physical activity, and sleep during the COVID-19 pandemic: evidence from eight longitudinal population surveys

open access: yesBMC Medicine, 2022
Bożena Wielgoszewska   +17 more
doaj   +1 more source

Five-year change in brain metabolism across the spectrum of cognitive impairment in older adults: a quantitative MRI study. [PDF]

open access: yesAlzheimers Dement
Wu J   +14 more
europepmc   +1 more source

ON BASELINE CONDITIONS FOR ZERO-INFLATED LONGITUDINAL COUNT DATA [PDF]

open access: yes
We describe a mixed-effects hurdle model for zero-inflated longitudinal count data, where a baseline variable is included in the model specification. Association between the count data process and the endogenous baseline variable is modeled through a ...
Valentina Raponi, Antonello Maruotti
core  

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