Results 11 to 20 of about 4,179,049 (359)
Is Construct Validation Valid? [PDF]
Philosophy of Science, 2016 What makes a measure of well-being valid? The dominant approach today, construct validation, uses psychometrics to ensure that questionnaires behave in accordance with background knowledge. Our first claim is interpretive—construct validation obeys a coherentist logic that seeks to balance diverse sources of evidence about the construct in question ...
Alexandrova, A, Haybron, DM
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Are cluster validity measures (in) valid?
Information Sciences, 2021 Internal cluster validity measures (such as the Calinski-Harabasz, Dunn, or Davies-Bouldin indices) are frequently used for selecting the appropriate number of partitions a dataset should be split into. In this paper we consider what happens if we treat such indices as objective functions in unsupervised learning activities.
Maciej Bartoszuk +3 more
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Validated or Not Validated? That Is the Question [PDF]
JNCI Journal of the National Cancer Institute, 2014 deviation estimates were … acceptable as they are
Melanie Spears +2 more
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Changing Swabs: To Validate or Not To Validate? [PDF]
Journal of Clinical Microbiology, 2013 A widely perceived requirement for validation of all new specimen collection swabs by the laboratory appears to be the result of misinformation. Neither the College of American Pathologists (CAP) nor regulations through the Clinical Laboratory Improvement Amendments (CLIA) address specifically ...
Sheldon Campbell +2 more
openaire +3 more sources
Journal of Applied Clinical Medical Physics, Volume 23, Issue 12, December 2022., 2022 Abstract Positron emission tomography with x‐ray computed tomography (PET/CT) is increasingly being utilized for radiation treatment planning (RTP). Accurate delivery of RT therefore depends on quality PET/CT data. This study covers quality control (QC) procedures required for PET/CT for diagnostic imaging and incremental QC required for RTP.
Ran Klein +7 more
wiley +1 more source
Clinical commissioning of an adaptive radiotherapy platform: Results and recommendations
Journal of Applied Clinical Medical Physics, Volume 23, Issue 12, December 2022., 2022 Abstract Online adaptive radiotherapy platforms present a unique challenge for commissioning as guidance is lacking and specialized adaptive equipment, such as deformable phantoms, are rare. We designed a novel adaptive commissioning process consisting of end‐to‐end tests using standard clinical resources.
Kelly Kisling +5 more
wiley +1 more source
Statistical process control to monitor use of a web‐based autoplanning tool
Journal of Applied Clinical Medical Physics, Volume 23, Issue 12, December 2022., 2022 Abstract Purpose To investigate the use of statistical process control (SPC) for quality assurance of an integrated web‐based autoplanning tool, Radiation Planning Assistant (RPA). Methods Automatically generated plans were downloaded and imported into two treatment planning systems (TPSs), RayStation and Eclipse, in which they were recalculated using ...
Hunter Mehrens +5 more
wiley +1 more source
A typology of validity: content, face, convergent, discriminant, nomological and predictive validity [PDF]
Journal of Trade SciencePurpose – Research serves to elucidate and tackle real-world issues (e.g. capitalizing opportunities and solving problems). Critical to research is the concept of validity, which gauges the extent to which research is adequate and appropriate in ...
Weng Marc Lim
doaj +1 more source
Volume staging for arteriovenous malformation SRS treatment using VMAT
Journal of Applied Clinical Medical Physics, Volume 23, Issue 12, December 2022., 2022 Abstract Volume staging involves dividing the target volume into smaller parts and treating each part separately. In this study, the feasibility of volume‐staged stereotactic radiosurgery (VS‐SRS) on a linear accelerator using volumetric modulated arc therapy (VMAT) and a frameless patient positioning system is investigated.
Claudia Mendez, Ermias Gete
wiley +1 more source
Validity, dialetheism and self-reference [PDF]
, 2018 It has been argued recently (Beall in Spandrels of truth, Oxford University Press, Oxford, 2009; Beall and Murzi J Philos 110:143–165, 2013) that dialetheist theories are unable to express the concept of naive validity.
Pailos, Federico Matias
core +1 more source