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ZAMSZero-Age Main Sequence (astronomy)
ZAMSZama American Middle School (US DoD Dependent School; Japan)
ZAMSZymosan-Activated Mouse Serum
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References in periodicals archive ?
Mr Siewart and Mr Mort fought free from the wreckage and were taken to hospital in Zams.
on Friday, the composite team conducted buy-bust operations at Room 3, Zams Apartelle in Iriga City, that resulted in the arrest of De Lima.
Mamalo, Zams Kamal Musaiden and Reyno Silongan Lagawan, all residents of Barangay Barurao, Sultan sa Barongis, Maguindanao, were charged for violation of Republic Act 10591 or illegal possession of guns.
Taking the ZAM distribution of the time series X(t) of beam responses to the VAM stimulation, that is, [ZAM.sub.X](t, f), a more detailed exploitation of the modulation effects can be achieved by analyzing the mean amplitude and fluctuation of [ZAM.sub.X](t, f) at the main sidebands ([MATHEMATICAL EXPRESSION NOT REPRODUCIBLE IN ASCII]) around the high-frequency component, that is, mean/fluct([MATHEMATICAL EXPRESSION NOT REPRODUCIBLE IN ASCII]), along with the mean amplitude and fluctuation of [ZAM.sub.X](t, f) at the [f.sub.H] excitation frequency, that is, mean/fluct([absolute value of [ZAM.sub.X](f, [f.sub.H])]).
This is further examined in Figure 5, where the spectrum of the amplitude fluctuation of the ZAM transform at the corresponding VAM frequencies, that is, 31392 Hz (a), 31300 Hz (b), and 31208 Hz (c), for the crack size of 45%, respectively, is illustrated.
Similarly to the spectral characteristics of the amplitude modulation of ZAM transform seen in Figure 5, here the low excitation frequency [f.sub.L] = 92 Hz modulates the frequency fluctuation [MATHEMATICAL EXPRESSION NOT REPRODUCIBLE IN ASCII] (Figures 6(a) and 6(c), resp.), whereas a coexistence of [f.sub.L] = 92 and 2 [f.sub.L] = 184 Hz modulates the frequency fluctuation of [ZAM.sub.X](t, [f.sub.H]) (Figure 6(b)).
Nevertheless, the latter damage index of [6] unexpectedly increases non-monotonically as the severity of crack increases; here, as it is derived from Figure 7 (second and third rows), the damage indices based on the frequency fluctuation (range and std) of the ZAM distribution increase monotonically with the crack depth, exhibiting, though, reduced sensitivity in the small cracks identification.
In this work, the investigation of the vibroacoustic modulation of cracked beam is approached in the time-frequency domain, using time-frequency analysis based on the Zhao-Atlas-Marks (ZAM) distribution.
The primary aim of the present work is to investigate vibroacoustic modulation in the time-frequency domain by employing time-frequency analysis based on the Zhao-Atlas-Marks (ZAM) distribution, which has the advantage of significantly reducing cross-terms between signal components, through its cone-shaped kernel function.