Natural frequencies, mode shapes, and modal damping ratios of the structure are extracted from measured ambient vibration data using an automated data-driven stochastic subspace identification algorithm.
To assess REACH compliance at the local scale, measured ambient air data are preferred but are often unavailable.
Our results are consistent with findings in other panel studies using nonambulatory (in-clinic) ECG data that measured ambient PM2.5 mass (Gold et al. 2005; Lanki et al. 2008; Pekkanen et al. 2002) and personal PM2.5 (Lanki et al. 2008).
Elemental data show that modeled median concentrations were higher than median measured ambient concentrations, and more so in LA (approximately six times higher) than in NYC (~ 60% higher).
We measured ambient room temperature with a digital thermometer.
Moreover, a comparison of the modeled air quality estimates with geographically limited ambient air monitoring data throughout the country found that the modeled estimates for the handful of pollutants examined by the NATA were typically lower than the measured ambient annual average concentrations (U.S. EPA 2005b).
The LTC1392, a micropower, multifunction data acquisition system designed to measure ambient temperature, system power supply voltage and power supply current or differential input voltage, is described.
To estimate the effects of PM exposure in the days before the examinations, we used ambient data from the monitor network of the city of Beijing, which measures ambient PM10.
In a prospective cohort study design, a major issue is how to identify a cohort with a sufficient variation in cumulative exposures, particularly when data recorded in central monitoring stations are used to measure ambient air pollution levels [ 44].
The so-called A-weighted filter, for example, is commonly used for measuring ambient community noise.
