In case of the discrete version of sliding mode control, due to finite operational sampling frequency, the system trajectories cannot be forced to slide on the switching manifold.
It is known that for fixed design parameters (cut-off frequency, transition-band width, pass-band, and stop-band ripples) the FIR filter order varies as a function of the operational sampling frequency.
Most operational sampling approaches utilize a combination of earth-observation data and in-situ field assessments as data sources.
With in operational sampling, 1 (5.3%) and 14 (73.7%) samples exceeded the limit value of the active (180 CFU/m) and of the passive method (3932.1 CFU/m/h) respectively.
This effort was meant to serve as the forerunner of a citywide volunteer pollen sampling network based on the cooperation of existing health care providing institutions, schools, and stations of the operational sampling network of the New York City Department of Air Resources.
During in operational sampling, when the personnel is in the room, the results of the sampling clearly reflect the team's hygiene procedures and behaviour, and not only the CCVS performance [ 18, 19].
and/or the different parameters applied (volume of air sampled, sampling time protocol, point of sampling, etc).. Our study has demonstrated that when a strict protocol is followed results of active and passive sampling correlate in a comparable way with the quality of air for both at rest and in operational sampling.
In operational sampling showed higher values of TVC than at rest with both active and passive methods (93.8 vs 12.4 CFU/m and 10496.5 vs 722.5 CFU/m/h respectively) as would be expected due to the inevitable microbial dispersion from people.
Our laboratory fermenters were fed with a substrate mix with a similar composition, but our operational parameters, sample handling, DNA extraction protocols and sequence data collection and analysis methods were different.
Under optimal operational conditions (sampling loop length, flow cell optical pathlength and LED emission wavelength), the magnitude of the signal generated by the schlieren effect was linearly related to ethanol concentration in aqueous medium from 2.5 to 60% (v/v), r = 0.9994.
