Sewer outlets from buildings in a harsh climate are considered one of the main elements sewer network, determining its reliability and efficiency. The article considers change temperature wastewater at laid reduced depth frozen ground. Methods: purpose this study was to determine city Kyzyl during day winter. Result: New experimental data on presented summarized. range building has been determi...

In this paper, we estimate the upper limit of transmission data rate in airborne ultrasonic communications, under condition optimal power allocation. The presented method is based on frequency response a channel case single-path LOS propagation different climatic conditions and AWGN background noise model, it can be easily extended to frequency-dependent noise. obtained results go beyond discre...