To contextualize our empirical results, we performed a detailed simulation study to tease apart how sampling frequency, sampling duration, and the focal animal's movement conspire to affect range estimates.
Concentrations were calculated based on sample mass, sampling duration, sampling rate and recovery efficiency.
Each of the raw AQS data sets provides information about the spatial coordinates, collection time, sampling duration, sampling frequency, and data duplication indicators (U.S. EPA 2005).
Details on the list of compounds, sorbent materials, sampling duration, sampling times, and flow rates are available [see Supplemental Material (available online at doi 10.1289/ ehp.0900561.S1 via http://dx.doi.org/)].
PSD concentrations represent a time-weighted average concentration, therefore the net flux for each sampling period is the time-weighted average flux over the sampling duration.
However, longer sampling duration had a positive effect on angular dispersion and core area estimates.
Numerical examples are adopted to illustrate the improved method, and the effects of sampling frequency and sampling duration are discussed.
Thus, the total sampling duration is only related to the capacity of the hard disk on board.
Most existing time domain force identification methods are based on the state space method, which has the disadvantage of large discretization error with a low sampling frequency or a long sampling duration.
The effects of the positive weight matrix, the learning coefficient, and the sampling duration on the convergence and the accuracy of the proposed approach were discussed and the results were compared with available related literature results.
A simulation study was done to determine if 72 h is the most informative sampling duration for bioequivalence (BE) determination in paralleldesigned BE studies with drugs that have half-lives of at least 30 h.
