Nature

Effects of ambient air pollution measurement error on health effect estimates in time-series studies: a simulation-based analysis

Assessment of the effects of measurement error is challenging in part because the distribution of true pollutant concentrations throughout the airshed cannot be known ...
Nature

Comparison between focometer and autorefractor in the measurement of refractive error among students in underserved community of sub-Saharan Africa

To compare focometer and autorefractor in the measurement of refractive errors among students in an underserved community of sub-Saharan Africa. A total of 230 students were studied. Mean age of the ...
JSTOR Daily

Effects of Covariate Measurement Error in the Initial Level and Rate of Change of an Exposure Variable

When repeated measures of an exposure variable are obtained on individuals, it can be of epidemiologic interest to relate the slope of this variable over time to a subsequent response.
JSTOR Daily

EVALUATING THE MEASUREMENT ERROR OF INTERVIEWER OBSERVED PARADATA

The Public Opinion Quarterly, Vol. 77, SPECIAL ISSUE: TOPICS IN SURVEY MEASUREMENT AND PUBLIC OPINION (2013), pp. 173-193 (21 pages) As survey researchers have begun exploiting paradata—for example, ...
Electronic Design

Test & Measurement: Powerful Bit-Error-Rate Tester Works At 1500 Mbits/s

The BA1500 1500-Mbit/s BitAlyzer bit-error-rate (BER) tester provides detailed BER tests and points out where and when errors occur. It shows errors, block errors, and error-free interval statistics ...
Electronic Design

Mitigate Error Sources to Maximize Current-Measurement Accuracy

This file type includes high resolution graphics and schematics when applicable. Monitoring the current consumed in electronic systems has become critical as more functionality packs into tighter ...