The distance between two points in space can be ascertained with a rod, or a tape, or by optical means, and the result depends essentially on the physical behavior of the instruments used.
Across this entire regime, NMR observables can report on the amplitude of atomic motion, and the kinetics of atomic motion can be ascertained with a wide variety of experimental techniques from real-time to milliseconds and several nanoseconds to picoseconds.
"While Juniper Research has questioned key players on their expectations of the market for both their own projects and the market as a whole, we believe that only when several commercial rollouts are underway can adoption rates be ascertained with a high degree of certainty".
Skill level can be ascertained with a much shorter selection.
"The extent of un-hedged exchange rate exposure in the corporate sector cannot be ascertained with a significant degree of confidence, given that systematic and comprehensive information on relevant offsetting variables (notably natural hedges from net export proceeds, foreign currency income from multinational operations and FX derivative positions) is not simple to construct".
Mortality and cause of death were ascertained with a validated program, the California Automated Mortality Linkage System.
Usual dietary intake was ascertained with a 114-item food frequency questionnaire.
Smoking status during pregnancy was ascertained with a binary variable (yes/no).
Current asthma, which was our primary outcome measure, was ascertained with a question confirming asthma symptoms in the past year.
ITN possession and use among all household residents were ascertained with a net roster and a registry of all household residents.
