Zobrazeno 1 - 10
of 15
pro vyhledávání: '"Daniel W. Tholen"'
Autor:
Roberto Perissi, Annette Thomas, Philip D. P. Taylor, Antonio Menditto, Barry Tylee, Vivienne L. A. James, Beatriz de la Calle, Kees van Putten, Brian Brookman, Michael Koch, Maria Belli, Daniel W. Tholen, Nineta Majcen, Piotr Robouch, Tommy Šlapokas, Tracey Noblett
Publikováno v:
Scopus-Elsevier
A summary of the working group (WG) discussions on proficiency testing (PT) and external quality assessment (EQA) held at the Eurachem Workshop, Rome, 5–7 October 2008 is provided. The eight WG’s covered a range of issues concerned with current p
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::aabfb9168429076f0d00a9fcbc07c2c8
https://doi.org/10.1007/s00769-009-0492-0
https://doi.org/10.1007/s00769-009-0492-0
Autor:
Daniel W. Tholen
Publikováno v:
Accreditation and Quality Assurance. 13:727-730
The revision of ISO/IEC Guide 43 is well underway by CASCO Working Group 28, with the author as Convener. The ballot on the committee draft was successfully completed in June 2008. The Working Group met in September to resolve the CD comments and to
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f54642113777f525763e0f9c790807bd
https://doi.org/10.1007/s00769-008-0470-y
https://doi.org/10.1007/s00769-008-0470-y
Publikováno v:
Accreditation and Quality Assurance. 11:400-407
International requirements for PT and EQA state that providers must demonstrate that samples are homogeneous and stable. However, testing for homogeneity and stability can be expensive, use samples that could otherwise serve as quality-control materi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4c94c58249d51ccd1b392b4d2089780b
https://doi.org/10.1007/s00769-006-0167-z
https://doi.org/10.1007/s00769-006-0167-z
Publikováno v:
Accreditation and Quality Assurance. 10:140-143
A statistical strategy for discouraging collusion in split-level proficiency testing schemes was developed. When the samples are randomly labeled, the difference in the analyte levels in the two samples can be designed to maximize the probability of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2ced2391f3aa6240fc953dfa9a823bda
https://doi.org/10.1007/s00769-005-0915-5
https://doi.org/10.1007/s00769-005-0915-5
Autor:
Daniel W. Tholen
Publikováno v:
Accreditation and Quality Assurance. 9:653-656
This paper is intended to briefly discuss several recent initiatives regarding External Quality Assessment (or Proficiency Testing) (PT/EQA) for medical laboratories in various parts of the world. While a brief paper cannot be comprehensive for all r
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c533140c13642b36209f8d093960d691
https://doi.org/10.1007/s00769-004-0801-6
https://doi.org/10.1007/s00769-004-0801-6
Autor:
Daniel W. Tholen
Publikováno v:
Accreditation and Quality Assurance. 7:146-152
There is evidence to support the notion that interlaboratory comparisons (ILCs) are an effective tool for laboratory improvement. However, despite widespread experience and anecdotal evidence of improvements there are few published studies demonstrat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d70c4684f2e78d078e36e8a8ea03b585
https://doi.org/10.1007/s00769-002-0450-6
https://doi.org/10.1007/s00769-002-0450-6
Autor:
Daniel W. Tholen
Publikováno v:
Accreditation and Quality Assurance. 16:603-605
A sound system of competent measurements, underpinned by standards and accreditation, is an essential component of the infrastructure of any modern society. Proficiency Testing is an indispensible tool for developing and maintaining this infrastructu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6c75fd17c7736105d5013e12d6598f7e
https://doi.org/10.1007/s00769-011-0836-4
https://doi.org/10.1007/s00769-011-0836-4
Autor:
Robin A. Silva-Wilkinson, G. Michael DeGraeve, Barbara R. Sheedy, Daniel W. Tholen, Lawrence P. Burkhard
Publikováno v:
Environmental Toxicology and Chemistry. 19:2218-2223
An inter- and intralaboratory evaluation was performed on a recently developed sediment screening method designed to detect a wide range of persistent bioaccumulative toxins (PBTs). Ten participating laboratories analyzed sediment samples, and their
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d833b7803a0443d8165cd521b63fd9ab
https://doi.org/10.1002/etc.5620190911
https://doi.org/10.1002/etc.5620190911
Autor:
Daniel W. Tholen
Publikováno v:
Accreditation and Quality Assurance. 14:635-637
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9750f457aae02881bb20d3803caa3650
https://doi.org/10.1007/s00769-009-0600-1
https://doi.org/10.1007/s00769-009-0600-1
Autor:
Daniel W. Tholen
Publikováno v:
Accreditation and Quality Assurance. 3:362-366
There are three stages to evaluating a laboratory's results in an interlaboratory proficiency test: establishing the correct result for the test item, determining an evaluation statistic for the particular result, and establishing an acceptable range
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4e80c35a7f6785bbde7da02172ad4774
https://doi.org/10.1007/s007690050262
https://doi.org/10.1007/s007690050262