Results 11 to 20 of about 36,433 (216)

Sample size in usability studies [PDF]

open access: yesCommunications of the ACM, 2012
Magic numbers are strictly hocus-pocus, so usability studies must test many more subjects than is usually assumed.
openaire   +2 more sources

Sampling Methods in Clinical Research; an Educational Review

open access: yesArchives of Academic Emergency Medicine, 2017
Clinical research usually involves patients with a certain disease or a condition. The generalizability of clinical research findings is based on multiple factors related to the internal and external validity of the research methods.
Mohamed Elfil, Ahmed Negida
doaj   +1 more source

Sampling time-dependent artifacts in single-cell genomics studies

open access: yesGenome Biology, 2020
Robust protocols and automation now enable large-scale single-cell RNA and ATAC sequencing experiments and their application on biobank and clinical cohorts.
Ramon Massoni-Badosa   +15 more
doaj   +1 more source

Sampling Methods in Clinical Research; an Educational Review

open access: yesEmergency, 2016
Clinical research usually involves patients with a certain disease or a condition. The generalizability of clinical research findings is based on multiple factors related to the internal and external validity of the research methods.
Mohamed Elfil, Ahmed Negida
doaj   +1 more source

Reluctance and willingness for organ donation after death among the Slovene general population

open access: yesSlovenian Journal of Public Health, 2019
The paper presents the findings of the first large-scale survey on post-mortem organ donation among the general Slovenian population. It focuses on the reported donation willingness, the barriers to joining the register of organ donors and the position ...
Berzelak Nejc, Avsec Danica, Kamin Tanja
doaj   +1 more source

Optimising sampling and analysis protocols in environmental DNA studies

open access: yesScientific Reports, 2021
Ecological surveys risk incurring false negative and false positive detections of the target species. With indirect survey methods, such as environmental DNA, such error can occur at two stages: sample collection and laboratory analysis.
Andrew Buxton   +4 more
doaj   +1 more source

Implementation of web-based respondent driven sampling in epidemiological studies

open access: yesBMC Medical Research Methodology, 2023
Background Respondent-driven sampling (RDS) is a peer chain-recruitment method for populations without a sampling frame or that are hard-to-reach. Although RDS is usually done face-to-face, the online version (WebRDS) has drawn a lot of attention as it ...
Pedro Ferrer-Rosende   +5 more
doaj   +1 more source

Moving towards a Network of Autonomous UAS Atmospheric Profiling Stations for Observations in the Earth’s Lower Atmosphere: The 3D Mesonet Concept

open access: yesSensors, 2019
The deployment of small unmanned aircraft systems (UAS) to collect routine in situ vertical profiles of the thermodynamic and kinematic state of the atmosphere in conjunction with other weather observations could significantly improve weather forecasting
Phillip B. Chilson   +19 more
doaj   +1 more source

Poor implementation of non-invasive sampling in wildlife genetics studies [PDF]

open access: yesRethinking Ecology, 2019
The Earth’s biodiversity is currently experiencing immense pressure from habitat loss, overexploitation, global climate change, and invasive species, which escalate the global extinction crisis.
Miriam A. Zemanova
doaj   +3 more sources

Sample size: how many participants do I need in my research? [PDF]

open access: yesAnais Brasileiros de Dermatologia, 2014
The importance of estimating sample sizes is rarely understood by researchers, when planning a study. This paper aims to highlight the centrality of sample size estimations in health research.
Jeovany Martínez-Mesa   +4 more
doaj   +1 more source

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