Objective E-cigarette use has rapidly increased. Recent studies define prevalence using a variety of measures; competing definitions challenge cross-study comparison. We sought to understand patterns ...

US Food and Drug Administration researchers working on ways to make powdered infant formula safer were told earlier this month they’d be let go, just weeks after Health and Human Services ...

In this sense, IDF curves link probability of occurrence to a given rainfall intensity based on time series with different durations, fitted by a probability distribution function (Faridzad et al., ...

Normal distribution tables are used in securities trading to help identify uptrends or downtrends, support or resistance levels, and other technical indicators. Normal Distribution Example ...

Secondly, the method of frequency sampling through the centre of inertia is proposed with full consideration of the electrical distance and generator inertia constants. Finally, a 10 machine 39 bus ...

Frequency is a fundamental concept when you're talking about waves, whether that means electromagnetic waves like radio waves and visible light, or mechanical vibrations like sound waves.

5 Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing, China; The rock characteristic and size–frequency distribution (SFD) on Mars are important for understanding the ...