introduction: the basic objective of this study is to investigate the effects of alpha and theta brain waves amplitude increase in occipital area on reducing the severity of symptoms of generalized anxiety disorder and to increase the global functioning level in patients with gad. methods: this study is a quasi-experimental study with pre-test and post-test with two groups. for this purpose, 28...

The detection of coal/shale interfaces close to the surface using ground penetrating radar (GPR) is difficult because the echo is drowned in unwanted signal components. These components are susceptible to changes in amplitude and cannot be removed well by standard preprocessing techniques. Second order correlation based methods such as matched filtering fail to locate the echo reliably under th...

Noise-induced escape from a metastable state is studied for an overdamped periodically modulated system. We develop an asymptotic technique that gives both the instantaneous and period-average escape rates, including the prefactor, for an arbitrary modulation amplitude A . We find the parameter range where escape is strongly synchronized and the instantaneous escape rate displays sharp peaks. T...

In this paper, the AM{FM modulation model is applied to speech analysis, synthesis and coding. The multiband demodulation pitch tracking algorithm is proposed that produces smooth and accurate fundamental frequency contours. The AM{ FM modulation vocoder represents speech as the sum of resonance signals modeled by their amplitude envelope and instantaneous frequency signals. E cient modeling an...

The defect investigation of sluice floor is an important measure to ensure the safe operation sluice. due traditional drilling methods will cause damage floor, and appearance inspection compressive strength test can not evaluate internal defects reinforced concrete in floor. In this paper, we apply ground penetrating radar(GPR) quality a gate seawall. And describe layout, detection principle da...

ground penetration radar (gpr) as a nondestructive method for identifying underground objects has been successfully applied to different fields of science such as geotechnical investigations, oil and gas exploration, geology, pipe detection and archeology investigations. metallic and nonmetallic objects can be identified by this method.  the depth of penetration is dictated by the gpr antennas....

Due to the impact of climate warming and engineering construction, thaw-slumping has developed extensively along Qinghai–Tibet Project Corridor. These landslide disasters not only destroy fragile ecology Plateau but also threaten security Because remote-sensing images lack imaging data inside body, excavation boreholes blindness inefficiency, ground-penetrating radar method with high efficiency...