Results 31 to 40 of about 1,639,942 (291)

Reducing bias in experimental ecology through directed acyclic graphs

open access: yesEcology and Evolution, 2023
Ecologists often rely on randomized control trials (RCTs) to quantify causal relationships in nature. Many of our foundational insights of ecological phenomena can be traced back to well‐designed experiments, and RCTs continue to provide valuable ...
Suchinta Arif, Melanie Duc Bo Massey
doaj   +1 more source

On classical description of radiation from neutral fermion with anomalous magnetic moment [PDF]

open access: yes, 2000
Electromagnetic radiation from an uncharged spin 1/2 particle with an anomalous magnetic moment moving in the classical electromagnetic external field originates from quantum spin-flip transitions.
A.E. Lobanov   +18 more
core   +2 more sources

On the external validity of construction bidding experiment

open access: yesConstruction Economics and Building, 2016
The external validity of experimental studies and in particular, the subject pool effects have been much debated among researchers. The common objections are that the use of student as experimental subjects is invalid as they are likely to be ...
Bee Lan Oo
doaj   +1 more source

Validation of Dutch Obstetric Telephone Triage System: A Prospective Validation Study

open access: yesRisk Management and Healthcare Policy, 2021
Bernice Engeltjes,1,2 Corlijn Van Dijk,3 Ageeth Rosman,2 Rudy Rijke,2 Fedde Scheele,1,4 Eveline Wouters5 1Athena Institute for Transdisciplinary Research, Faculty of Science, VU University, Amsterdam, the Netherlands; 2Department of Healthcare Studies ...
Engeltjes B   +5 more
doaj  

The Online Laboratory: Conducting Experiments in a Real Labor Market [PDF]

open access: yes, 2010
Online labor markets have great potential as platforms for conducting experiments, as they provide immediate access to a large and diverse subject pool and allow researchers to conduct randomized controlled trials. We argue that online experiments can be
Horton, John J.   +2 more
core   +2 more sources

Evaluation of a Dutch version of the AIMS2 for patients with rheumatoid arthritis [PDF]

open access: yes, 1996
DUTCH-AIMS2, a Dutch version of AIMS2 and successor to DUTCH-AIMS, is an instrument to assess health status among patients with rheumatic diseases. It provides measurements of 12 areas of health status on scales for health status proper, satisfaction ...
Houtman, P.M.   +5 more
core   +7 more sources

To what extent are savings-cash flow sensitivities informative to test for capital market imperfections? [PDF]

open access: yes, 2016
We construct a simple model with lumpy investment, cash accumulation and costly external finance. Based on this model, we propose a new savings specification aimed at examining savings behavior in the presence of investment lumpiness and financial ...
Guariglia, Alessandra   +2 more
core   +2 more sources

Relationships between high-stakes clinical skills exam scores and program director global competency ratings of first-year pediatric residents [PDF]

open access: yesMedical Education Online, 2011
Responding to mandates from the Accreditation Council for Graduate Medical Education (ACGME) and American Osteopathic Association (AOA), residency programs have developed competency-based assessment tools.
Erik E. Langenau   +2 more
doaj   +1 more source

An Analysis of the External Validity of EEG Spectral Power in an Uncontrolled Outdoor Environment during Default and Complex Neurocognitive States

open access: yesBrain Sciences, 2021
Traditionally, quantitative electroencephalography (QEEG) studies collect data within controlled laboratory environments that limit the external validity of scientific conclusions.
Dalton J. Edwards, Logan T. Trujillo
doaj   +1 more source

On Regulatory and Organizational Constraints in Visualization Design and Evaluation

open access: yes, 2016
Problem-based visualization research provides explicit guidance toward identifying and designing for the needs of users, but absent is more concrete guidance toward factors external to a user's needs that also have implications for visualization design ...
Crisan, Anamaria   +2 more
core   +1 more source

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