TITLE

Validacija i mjerna nesigurnost

AUTHOR(S)
GašIjevic, Višnja
PUB. DATE
April 2010
SOURCE
Biochemia Medica;2010, Vol. 20 Issue 1, p57
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
In today's global world, accurate, reliable and comparable measurement results are of vital importance. Therefore, the standards which regulate laboratory requirements (ISO/IEC 17025, ISO 15189) demand a metrological approach to the measurement processes, requiring method validation, establishment of metrological traceability, estimation of measurement uncertainty, monitoring of trends in measurement processes etc. Making the right decision on whether or not some measurement procedure is adequate for a stated use (validation), as well as a realistic estimation of measurement uncertainty, is only possible when a measurement process is well known. Its 'goodness' is characterized in terms of random and systematic errors that affect the measurements. Experiments conducted in order to validate a method can give good insight into their magnitude and also into their sources and therefore can be used for measurement uncertainty estimation. The scope of performed experiments surpasses the need for the assessment of measurement uncertainties. They are used to explore method behavior in all realistic operational conditions, to finds its weak points, prove coordinated work of personnel as well as to prove selectivity or check limits of detection etc. Even though it will not have a major impact on the information about measurement accuracy, it will ensure more reliable work, easier detection of errors in work and a higher level of confidence in results' accuracy.
ACCESSION #
49313490

 

Related Articles

  • Managing the Measurement System. Payne, Graeme C. // Quality Progress;Mar2007, Vol. 40 Issue 3, p77 

    The article discusses the management of measurement system through the utilization of ISO 10012:2003. According to the author, the ISO 10012 standard provides a model for planning an organization's total measurement system. This standard is a useful guide to determining and documenting all...

  • Sources of uncertainty in eddy covariance ozone flux measurements made by dry chemiluminescence fast response analysers. Muller, J. B. A.; Percival, C. J.; Gallagher, M. W.; Fowler, D.; Coyle, M.; Nemitz, E. // Atmospheric Measurement Techniques;2010, Vol. 3 Issue 1, p163 

    The article discusses a systematic intercomparison study which examines the reasons of doubt in eddy covariance ozone flux measurements. It states that the process is done through two fast response dry chemiluminescence analyzers. Findings indicate that the error in the analyzer calibration...

  • Aerodynamic gradient measurements of the NH3-HNO3-NH4NO3 triad using a wet chemical instrument: an analysis of precision requirements and flux errors. Wolff, V.; Trebs, I.; Ammann, C.; Meixner, F. X. // Atmospheric Measurement Techniques;2010, Vol. 3 Issue 1, p187 

    The article discusses a study which analyzes the aerodynamic gradient measurements of ammonia, nitric acid and particulate ammonium nitrate. It states that the analysis conducted was based on two field experiments and the results were obtained through wet-chemical method. It notes that the...

  • Perfectionists demand a measurement revolution. Fisher, Richard // New Scientist;9/22/2007, Vol. 195 Issue 2622, p46 

    The article reports that metrologists, the group of people who take care of the units and measures scientists use with the international system of units (SI units), are having problems with the accuracy of some current scales such as metric units, Kelvin degrees, and amperes. They have called an...

  • The Design of a Hall Effect Current Transformer and Examination of The Linearity with Real Time Parameter Estimation. Gokmen, G.; Tuncalp, K. // Electronics & Electrical Engineering;2010, Issue 101, p3 

    The article presents a study which discusses the design of Hall Effect current transformer model that measures direct current (DC) and alternate current (AC). It states that Allegro A 3515 linear Hall sensor and INA 110 KP instrumentation amplifier were used in the design. It says that linearity...

  • Linear and nonlinear measures of variability in step activity data reveal motor control strategies employed by relatively active and inactive older adults. Kochi, Naomi N. K.; Stergiou, Nickolas N. S.; Cavanaugh, James T. // Journal of Sport & Exercise Psychology;Jul2007 Supplement, Vol. 29, pS99 

    The StepWatch3 Activity Monitor (SW3) is an instrument that records step counts at frequent intervals from individuals ambulating in their customary living environment. Traditionally the SW3 has been used to measure the volume of activity (i.e., total steps or minutes) accumulated during a given...

  • Simplified Factors of Analysis of Means for Treatment Effects. Balamurali, S. // International Journal of Statistics & Systems;2010, Vol. 5 Issue 2, p135 

    The analysis of means is a technique which is used for the graphical analysis of the means resulting from a designed experiment. In many situations the error standard deviation can be estimated using the range of the treatment subgroups. When the number of observations in each treatment is...

  • Splitting induced generation of soliton trains in layered waveguides. Dreiden, G. V.; Khusnutdinova, K. R.; Samsonov, A. M.; Semenova, I. V. // Journal of Applied Physics;Feb2010, Vol. 107 Issue 3, p034909-1 

    We report first experimental registration of the splitting induced generation of a soliton train from a single incident strain soliton in two- and three-layered elastic waveguides. The origin is in the nonlinear response of the wave to an abrupt change of physical properties of the waveguide. We...

  • PhD Thesis Review: Software Metrics Refinement. Visşoiu, Adrian Mihai // Informatica Economica;2009, Vol. 13 Issue 3, p189 

    The article focuses on the thesis that aims to build methods and techniques for software metrics estimation models refinement. The characteristics estimation models are important in identifying future levels of characteristics based on presently recorded data, or determining factors that...

Share

Read the Article

Courtesy of VIRGINIA BEACH PUBLIC LIBRARY AND SYSTEM

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics