OBJECTIVE To assess signal-averaged electrocardiogram (SAECG) for diagnosing incipient left ventricular hypertrophy (LVH). METHODS A study with 115 individuals was carried out. The individuals were divided as follows: GI - 38 healthy individuals; GII - 47 individuals with mild to moderate hypertension and normal findings on echocardiogram and ECG; and GIII - 30 individuals with hypertension a...

Non-intrusive, non-contacting frequency-domain photothermal radiometry (FD-PTR or PTR) and frequency-domain luminescence (FD-LUM or LUM) have been used with 659- and 830-nm laser sources to assess the pits and fissures on the occlusal surfaces of human teeth. Fifty-two human teeth were examined with simultaneous measurements of PTR and LUM and were compared to conventional diagnostic methods in...

One of the approaches to support high data rates in beyond 5G cellular networks is dense deployment small cell millimeter-wave (frequency range 2 (FR2)) ( $>24.5$ GHz) base stations. However, this stations leads cost, because it requires fiber backhaul connection with core network. prominent solution integrated access and (IAB) network proposed 3GPP Release 16, where some portion wireless spect...

Frequency domain optical coherence tomography (FD-OCT) allows interferometer topologies with simplified system construction and handling. Problems of dispersion and polarization matching between the sample and reference arms, as well as beamsplitter spectral non-uniformity, are mitigated when the interferometer is wholly contained in the endoscope tip. A common path set-up, using a reference re...

given the sensitivity of current ground-based gravitational wave (gw) detectors, any continuous-wave signal we can realistically expect will be at a level or below the background noise. hence, any data analysis of detector data will need to rely on statistical techniques to separate the signal from the noise. while with the current sensitivity of our detectors we do not expect to detect any tru...

In this work, low temperature deposition of ceramics, in combination with micromachining techniques have been used to fabricate a kerfed, annular–array, high–frequency, micro ultrasonic transducer (with seven elements). This transducer was based on PZT thick film and operated in thickness mode. The 27 μm thick PZT film was fabricated using a low temperature (720 oC) composite sol-gel ceramic (s...

A finite difference (FD) method is derived for the frequency-domain acoustic and acousto-gravity equations as expressed in cylindrical coordinates. First, it is shown analytically that for an isovelocity atmosphere in which the density decreases exponentially with altitude, the acoustic wave equations (i.e., neglecting gravity) indicate that (1) the pressure varies with the square root of the d...

This paper is concerned with the fault detection (FD) problem for Takagi–Sugeno (T–S) fuzzy systems with unknown membership functions. If the membership functions are unknown, the linear FD filter designs with fixed gains have been considered in the literature. To reduce the conservatism of the existing results, a switching mechanism that depends on the lower and upper bounds of the unknown mem...

Space-time coded generalized spatial modulation-aided sparse code division multiple access (STC/GSM-SCDMA) is proposed, which exploits the two-dimensional transmit diversity potential of both and frequency domain. Hence, it constitutes a promising solution for pervasive connectivity devices in next-generation nonorthogonal (NOMA) systems. More explicitly, our STC/GSM scheme achieves spatial-dom...