sound power is considered as an excellent measure for evaluating the efficiency of noise controls as well as for comparing noise sources in workrooms. this parameter can be determined by sound pressure or intensity based methods in real conditions of workrooms. this paper aims empirically to compare these in situ methods in relation to a typical industrial machine located in workroom in terms o...

Clinical laboratory measurement processes inform every stage of the medical decision-making process, and measurement of the activity levels of enzymes such as alkaline phosphatase, alanine aminotransferase, etc. provide vital information regarding various body functions such as the liver and gastrointestinal tract. The uncertainty associated with the result of these enzyme assays describes the ...

X-ray computed tomography (XCT) is increasingly being used for evaluating quality and conformance of complex products, including assemblies additively manufactured parts. The metrological performance traceability XCT nevertheless remains an important research area that reviewed in this paper. error sources influencing measurement results are discussed, along with related qualification, calibrat...

background and objectives: evaluating the performance of clinical units is critical for effective managementof health settings. certain assessment of clinical variables for performance analysis is not always possible,calling for use of uncertainty theory. this study aimed to develop and evaluate an integrated independentcomponent analysis-fuzzy-data envelopment analysis approach to accurate the...

The uncertainty in hypocenters and origin times depends on measurement error (the wrong onset is picked) and error in the travel-time tables (and thus earth model) used. The errors in the tables comprise a baseline shift (the average difference over all stations is not zero) and the residuals about the baseline. The residuals are usually referred to as model error. Baseline error only affects o...

We experimentally investigate three methods, utilizing different atomic observables and entangled states, to increase the sensitivity of rotation angle measurements beyond the "standard quantum limit" for nonentangled states. All methods use a form of quantum mechanical "squeezing." In a system of two entangled trapped (9)Be(+) ions we observe a reduction in uncertainty of rotation angle below ...

Arsenic is the toxic element, which creates several problems in human being specially when inhaled through air. So the accurate and precise measurement of arsenic in suspended particulate matter (SPM) is of prime importance as it gives information about the level of toxicity in the environment, and preventive measures could be taken in the effective areas. Quality assurance is equally important...