4,063 research outputs found
Temperature dependence of the hyperfine field of nickel from perturbed angular correlation spectroscopy
Full text linkPoster presented at the 2012 Washington State University Academic Showcase.PAC spectroscopy uses nickel calibration test to determine temperature independent of instrumental readingsFunding: National Science Foundation, (under grant DMR 09-04096) and the Praveen Sinha fund for Physics Research. Washington State University, Pullman, WAMiller, Jesse & Collins, Gary S. Temperature dependence of the hyperfine field of nickel from perturbed angular correlation spectroscopy . Poster presented at the Washington State University Academic Showcase, Pullman, WA
Determination of the correlation coefficient for impurity diffusion in an intermetallic compound
Full text linkPowerpoint presentation by Gary S. Collins at the 13th International Conference on Diffusion in Solids and Liquids (DSL 2017), Vienna, June 26-30, 2017. This research was supported in part by the National Science Foundation under grant DMR 14-10159 (Metals Program)
sj-pdf-1-ajs-10.1177_03635465211054506 – Supplemental material for Machine Learning and Statistical Prediction of Pitching Arm Kinetics
No full textSupplemental material, sj-pdf-1-ajs-10.1177_03635465211054506 for Machine Learning and Statistical Prediction of Pitching Arm Kinetics by Kristen F. Nicholson, Gary S. Collins, Brian R. Waterman and Garrett S. Bullock in The American Journal of Sports Medicine</p
Sample size in multistakeholder Delphi surveys: at what minimum sample size do replicability of results stabilise?
Full text linkBackground
The minimum sample size for multistakeholder Delphi surveys remains understudied. Drawing from three large international multistakeholder Delphi surveys, this study aimed to: 1) investigate the effect of increasing sample size on replicability of results; 2) assess whether the level of replicability of results differed with participant characteristics: e.g., gender, age, profession.
Methods
We used data from Delphi surveys to develop guidance for improved reporting of healthcare intervention trials: SPIRIT (Standard Protocol Items: Recommendations for Interventional Trials) and CONSORT (Consolidated Standards of Reporting Trials) extension for surrogate endpoints (n=175, 22 items rated); CONSORT-SPI, extension for social and psychological interventions (n=333, 77 items rated); and core outcome set for burn care (n=553, 88 items rated). Resampling with replacement was used to draw random subsamples from the participant data set in each of the three surveys. For each subsample, the median value of all rated survey items was calculated and compared to the medians from the full participant data set. The median number (and interquartile range) of medians replicated was used to calculate the percentage replicability (and variability). High replicability was defined as ≥80% and moderate as 60% and <80%
Results
The average median replicability (variability) as a percentage of total number of items rated from the three datasets was 81% (10%) at a sample size of 60. In one of the datasets (CONSORT-SPI), a ≥80% replicability was reached at a sample size of 80. On average, increasing the sample size from 80 to 160 increased the replicability of results by a further 3% and reduced variability by 1%. For subgroup analysis based on participant characteristics (e.g. gender, age, professional role), using resampled samples of 20 to 100 showed that a sample size of 20 to 30 resulted to moderate replicability levels of 64 to 77%.
Conclusion
We found that a minimum sample size of 60 to 80 participants in multistakeholder Delphi surveys provide a high level of replicability (≥80%) in the results. For Delphi studies limited to individual stakeholder groups (such as researchers, clinicians, patients), a sample size of 20 to 30 per group may be sufficient
Parascytoleptus papua Poore and Collins 2010
No full textParascytoleptus papua Poore and Collins, 2010 Figs 2a, b, 6b Parascytoleptus papua Poore and Collins, 2010:614–618, figs 1,2. Material examined. Papua New Guinea. Madang Province, PAPUA NIUGINI stations. N of Riwo mangrove and seagrass, 05°08.7'S, 145°48.2'E, 2 m (stn PB48), IU-2013-7100 (male, 2.6 mm). N of Sek I., inner slope, 05°04.7'S, 145°48.9'E, 3 m (stn PB50), NMV J71642 (2 males, 2.8, 3.1 mm). New Ireland Province, Kavieng region, KAVIENG 2014 station. NW side of Ral I., coral wall, 19 m, 02° 36.4' S, 150° 42.4' E (stn KB62), IU-2014-2735 (female, 3.0 mm); IU-2014-17694 (male, 3.6 mm). Distribution. Papua New Guinea, Madang and New Ireland provinces; 2–19 m depth. Remarks. The types were collected not far from the new material. The major cheliped of the adult male figured here is longer and more elongate than that of the female figured by Poore and Collins (2010). Sakai (2011) diagnosed the genus with the male pleopod 1 ‘a small unsegmented protrusion’ based on its presence on two males of 4.2 mm and 5.3 mm length. This has not been observed on the holotype of P. papua (4.2 mm) or the smaller males reported here. The pleopod 1 may appear only in larger specimens.Published as part of Poore, Gary C. B., 2018, Burrowing lobsters mostly from shallow coastal environments in Papua New Guinea (Crustacea: Axiidea: Axiidae, Micheleidae), pp. 1-14 in Memoirs of Museum Victoria 77 on pages 10-11, DOI: 10.24199/j.mmv.2018.77.01, http://zenodo.org/record/806524
Evaluating methodological quality of Prognostic models Including Patient-reported HeAlth outcomes in oncologY (EPIPHANY): A systematic review protocol
Full text linkIntroduction While there is mounting evidence of the independent prognostic value of patient-reported outcomes (PROs) for overall survival (OS) in patients with cancer, it is known that the conduct of these studies may hold a number of methodological challenges. The aim of this systematic review is to evaluate the quality of published studies in this research area, in order to identify methodological and statistical issues deserving special attention and to also possibly provide evidence-based recommendations. Methods and analysis An electronic search strategy will be performed in PubMed to identify studies developing or validating a prognostic model which includes PROs as predictors. Two reviewers will independently be involved in data collection using a predefined and standardised data extraction form including information related to study characteristics, PROs measures used and multivariable prognostic models. Studies selection will be reported following the Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines, with data extraction form using fields from the Critical Appraisal and Data Extraction for Systematic Reviews of Prediction Modelling Studies (CHARMS) checklist for multivariable models. Methodological quality assessment will also be performed and will be based on prespecified domains of the CHARMS checklist. As a substantial heterogeneity of included studies is expected, a narrative evidence synthesis will also be provided. Ethics and dissemination Given that this systematic review will use only published data, ethical permissions will not be required. Findings from this review will be published in peer-reviewed scientific journals and presented at major international conferences. We anticipate that this review will contribute to identify key areas of improvement for conducting and reporting prognostic factor analyses with PROs in oncology and will lay the groundwork for developing future evidence-based recommendations in this area of research. Prospero registration number CRD42018099160
sj-pdf-1-smm-10.1177_09622802211046388 - Supplemental material for Developing clinical prediction models when adhering to minimum sample size recommendations: The importance of quantifying bootstrap variability in tuning parameters and predictive performance
No full textSupplemental material, sj-pdf-1-smm-10.1177_09622802211046388 for Developing clinical prediction models when adhering to minimum sample size recommendations: The importance of quantifying bootstrap variability in tuning parameters and predictive performance by Glen P Martin, Richard D Riley, Gary S Collins and Matthew Sperrin in Statistical Methods in Medical Research</p
77 best practices in negotiation
No full textBestselling author and expert in negotiation, Dr. Gary S. Goodman shares tips and techniques for negotiating everyday transactions as well as mega-deals
John Gary Anderson Biography - Accession 1365 - M681 (736)
No full textThis collection consists of a photocopy of a thesis titled, The Struggle to Succeed, John Gary Anderson and the Problems of a New South Industrialist by Craig S. Pascoe which was submitted to the faculty of the University of north Carolina at Charlotte in partial fulfillment of the requirements for the degree of Master of Arts in the Department of History in Charlotte, NC in 1992. This thesis details the history of the Rock Hill Buggy Company and the Anderson Motor Company, as well as a biography of founder, John Gary Anderson (1861-1937) of Rock Hill, SC. The abstract written by the author, Craig S. Pascoe, states his thesis: “Examines the efforts of John Gary Anderson to develop alternative forms of manufacturing in the South. Describes how Anderson built a successful buggy factory and how he converted his operations to manufacturing automobiles in 1916. Explores his efforts to change people’s perception of the South as a backward region. Concludes that the success of manufacturing in the South was hampered by negative attitudes of both Northern and Southern concerns.”https://digitalcommons.winthrop.edu/manuscriptcollection_findingaids/2188/thumbnail.jp
Atom jump frequencies of probe atoms in tin compounds
Full text linkNational Science Foundation grant DMR 90-04096 (Metals Program) Washington State University Department of PhysicsYin, X., Newhouse, R. and Collins, G. S. (2010, March 26). Atom jump frequencies of probe atoms in tin compounds. Poster presented at the Washington State University Academic Showcase, Pullman, WA
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