A spatially developing two-dimensional mixing layer interacting with an incident compression wave is simulated in order to analyse the mechanisms leading to the shock noise emission. Various upstream forcing modes leading to various characteristics of subsequent travelling twodimensional coherent structures are tested in order to assess their respective infuence on the leading mechanisms of sho...

Summary Satellite communication systems will be a key component of 5G and 6G networks to achieve the goal providing unlimited ubiquitous communications deploying smart sustainable networks. To meet ever‐increasing demand for higher throughput in beyond, aggressive frequency reuse schemes (i.e., full reuse), combined with digital beamforming techniques cope massive co‐channel interference, are r...

Substrate noise generated by digital circuits on mixed-signal ICs can disturb the sensitiveanalog/RF circuits, such as Low Noise Amplifier (LNA), sharing the same substrate. This paperinvestigates the adverse impact of the substrate noise on a high frequency cascode LNA laid out on alightly doped substrate. By studying the major noise coupling mechanisms, a new and efficientmodeling method is p...

Background: Acoustic noise is one of the universal pollutants of modern society. Although the high level of noise adverse effects on human hearing has been known for many years, non-auditory effects of noise such as effects on cognition, learning, memory and reading, especially on children, have been less considered. Factors which have negative impact on these features can also have a negat...

Hazardous and noxious substances (HNS) leakage from ship accidents has been one of the major sources pollutions. Due to varieties HNS, complexity physical chemical properties, harmfulness potential accidents, difficulty accident prevention, HNS could cause huge social environmental impacts. emergency response methods technologies are currently in early exploring stage. As a big import export co...

The 1/f noise investigation in nanoscale light-emitting diodes and lasers, based on GaAs and alloys, is presented here. Leakage and additional (to recombination through quantum wells and/or dots) nonlinear currents were detected and it was shown that these currents are the main source of the 1/f noise in devices studied. Keywords—Lasers, light-emitting diodes, quantum dots, quantum wells, 1/f n...