Spatial epidemiology has been aided by advances in geographic information systems, remote sensing, global positioning systems and the development of new statistical methodologies specifically designed for such data. Given the growing popularity of these studies, we sought to review and analyze the types ...
This article reports on an analysis of errors that were displayed by students who studied mathematics in Chemical Engineering in derivatives of mostly trigonometric functions. The poor performance of these students triggered this study. The researcher (lecturer) works in a mathematics support programme t...
Belk WP, Sunderman FW (1947) A survey of the accuracy of chemical analysis in clinical alboratories. Am J Clin Pathol 17:853 Google Scholar Brimble A, Pennock C, Stone J (1990) Results of a quality assurance exercise for urinary glycosaminoglycan excretion. Ann Clin Biochem 27:133–138 ...
In either case, we found a high level of false positive results and a general lack of correlation among methods. Altogether this analysis shows that all tested methods, including some of the most widely used in the literature, fail to distinguish true ligand bias from "system bias" with ...
Among the most important are the chemical measurement system (CMS), measurand, analyte, blank, systematic error, random error, elementary and complex measurements, probability density functions (PDFs), and uncertainty. In general, the output response variable of any CMS is characterized by a PDF,...
Seven common mistakes in the analysis of Raman spectra can lead to overestimating the performance of a model. Raman spectroscopy is an inelastic scattering process on a quantified energy system where vibrational energy levels are typically measured. The technique provides an indirect measurement of ...
内容提示: Chemical and Petroleum Engineering, gol. 31, Nos. 3-4, 1995 ERRORS IN THERMODYNAMICS (IN ORDER OF DISCUSSION) V. N. Kir'yakov UDC 621.577.001.5 Elsewhere [1] we pointed out individual errors in thermodynamics. Let us consider the causes in greater detail. The following can be ...
Dr. J. H. Wilkinson gives a systematic analysis ofrounding errors in fixed-point and floating-point computations, and a selective but extensive discussion of certain basic problems: zeros of a polynomial, solution of sets of linear equations, inversion of matrices, eigenvalues of a matrix. ...
Analysis of systematic errors in calibrating glass electrodes with H+ as a concentration probe. Fresenius J. Anal. Chem. 343, 469-472.Fiol, S., Arce, F., Armesto, X.L., Penedo, F., Sastre de Vicente, M.E., 1992. Analysis of systematic errors in calibrating glass electrodes with H...
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