Results 1 to 10 of about 1,867,915 (314)
Observations of the thermodynamic and kinematic state of the atmospheric boundary layer over the San Luis Valley, CO, using the CopterSonde 2 remotely piloted aircraft system in support of the LAPSE-RATE field campaign [PDF]
Earth System Science Data, 2021 In July 2018, the University of Oklahoma deployed three CopterSonde remotely piloted aircraft systems (RPASs) to take measurements of the evolving thermodynamic and kinematic state of the atmospheric boundary layer (ABL) over complex terrain in the San ...
E. A. Pillar-Little +23 more
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Korea Seroprevalence Study of Monitoring of SARS-COV-2 Antibody Retention and Transmission (K-SEROSMART): findings from national representative sample [PDF]
Epidemiology and Health, 2023 OBJECTIVES We estimated the population prevalence of antibodies to severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), including unreported infections, through a Korea Seroprevalence Study of Monitoring of SARS-CoV-2 Antibody Retention and ...
Jina Han +55 more
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Stratified Sampling Design Based on Data Mining [PDF]
Healthcare Informatics Research, 2013 ObjectivesTo explore classification rules based on data mining methodologies which are to be used in defining strata in stratified sampling of healthcare providers with improved sampling efficiency.MethodsWe performed k-means clustering to group ...
Yeonkook J. Kim +4 more
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A dual-tube sampling technique for snowpack studies
Journal of Glaciology, 2021 The validity of any glaciological paleo proxy used to interpret climate records is based on the level of understanding of their transfer from the atmosphere into the ice sheet and their recording in the snowpack. Large spatial noise in snow properties is
Remi Dallmayr +6 more
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Small Sample Studies: Unique Contributions for Large Sample Outcome Studies [PDF]
Schizophrenia Bulletin, 1988 There are many important issues relevant to the course of illness and outcome of chronic psychiatric disorders that are not readily amenable to investigation with existing large sample, quantitative methodology. For example, complex interactive phenomena that change over time, such as the longitudinal impact of changes in social and work function on ...
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Using re-sampling methods in mortality studies. [PDF]
PLoS ONE, 2010 Traditional methods of computing standardized mortality ratios (SMR) in mortality studies rely upon a number of conventional statistical propositions to estimate confidence intervals for obtained values.
Igor Itskovich, Brad Roudebush
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Study Sampling in the Canadian Study of Health and Aging
International Psychogeriatrics, 2001 The Canadian Study of Health and Aging drew representative samples of people aged 65 or over from the community and institutions across Canada. The sample was designed to provide regional and national prevalence estimates for dementia by age and sex. Thirty-six sampling areas were used in a stratified cluster design with optimal allocation; sampling ...
I, McDowell +4 more
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Arquivos Brasileiros de Cardiologia, 2007 FUNDAMENTO: O monitoramento periódico do tabagismo na população é de interesse para a saúde pública. OBJETIVOS: Comparar a prevalência do tabagismo e atitudes em relação ao tabagismo em uma amostra de residentes do município de São Paulo, em 1987 e em ...
Luiz Francisco Marcopito +5 more
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Designing a Longitudinal Survey on the Development of Iranian Children and Adolescents
تحقیقات نظام سلامت, 2021 Background: Investigating the effect of environmental factors, such as parental guidance and upbringing, on the individuals’ growth during their childhood and adolescence requires a long-term longitudinal study.
Zahra Rezaei-Ghahroodi +4 more
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Sample size in usability studies [PDF]
Communications of the ACM, 2012 Magic numbers are strictly hocus-pocus, so usability studies must test many more subjects than is usually assumed.
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