VLF


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VLF

(communications)
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

VLF

(Very Low Frequency) See frequency bands.
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References in periodicals archive ?
Similar to this year's VLF, EVLF will have lectures on Philippine and Mindanao theater, multimedia exhibits, book launches and an artists' night.
Lightning discharges can radiate electromagnetic waves over a wide frequency range from a few Hz to many tens of MHz, but most of the electromagnetic energy is radiated in the ELF and VLF bands, and the higher frequency component is attenuated rapidly as the propagation distance increases [22, 23, 32].
Spearman correlation analysis of the hypertensive patients showed that LF and LF/HF were negatively correlated with TO, while SDNN, SDANN, rMSSD, PNN50, VLF, LF, and HF were positively correlated with TS (Table 5).
For the frequency domains, the values were as follows: 10.8 (5.8-17.2) for the very low frequency (VLF) ([ms.sup.2]), 6.4 (3.4-12.9) for low frequency (LF) ([ms.sup.2]), 5.2 (3.3-11.2) for high frequency (HF) ([ms.sup.2]), and 1.09 (0.8-1.3) for the low/high ratio (L/H).
Vital Alert is a technology company that provides solutions using VLF technology and builds innovative products that enable positioning technology for smart cities and autonomous vehicles.
For these significant measures of HRV compared in different eGFR groups, a multivariable linear regression model was used, after adjustment for age, gender, BMI, history of hypertension and diabetes, the NIHSS score, TOAST, OCSP, modified Rankin score, BI score, eGFR, and [sz]-blockers; the NIHSS score and a history of diabetes were significant predictors for the SDANN index, VLF, and LF.
In the frequency domain analysis, it was observed that the power of the VLF component was predominant in both groups throughout the post-surgical period.
A 10 x 8 mm VLF fragment was observed on plain radiography, with volar displacement (Figure 1).
The secure military communication link in the VLF spectrum will add new dimensions by enhancing the flexibility and reach of submarine operations.
has entered into a research agreement with Toyota-ITC to evaluate position measurement using VLF (very low frequency) beacons, the company said.