โ Scribed by G. Robin Edwards; T. Michael Evans; Struan D. Robertson; Charles W. Summers
No coin nor oath required. For personal study only.
Analysis of the standard method for measuring Hardgrove grindability indices has led to the conclusion that a valid figure for reproducibility cannot be established without further definition of the calibration process. Ignoring any possible systematic differences between laboratories, and considering only the inherent uncertainties in the calibration line as at present defined, the minimum reproducibility that can be expected from the current procedure is 5 units. The value of 3 units quoted in the standard cannot, therefore, be justified. A realistic value for reproducibility can be established only by analysis of data from a properly planned inter-laboratory trial, and as far as we are aware, such data have not yet been published.
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04 By-products related to fuels suitable for preparing high-porosity carbons from bituminous coal, while carbons with very high porosity can be produced with bases such as KOH. An increase in particle size of the coal precursor was found to cause a reduction in both yield and porosity of the resulti
As part of the Leicester/DHSS project on microcomputer-aided assessment, 274 patients at five clinical sites were assessed with either a computerized version or the standard version of the Mill Hill Vocabulary (Synonyms) test. Of this group, 178 were retested on the alternative version of the test.
The paper motivates the need to acquire methodological knowledge for involving children as test users in usability testing. It introduces a methodological framework for delineating comparative assessments of usability testing methods for children participants. This framework consists in three dimens