Dakota State University

Evolution of Bed Shear Stress in Open-Channel Flow at Smooth-to-Rough and Rough-to-Smooth Transitions

Abstract The evolution of bed shear stress in open-channel flows due to a sudden change in bed roughness was investigated for rough-to-smooth (RTS) and smooth-to-rough (STR) transitions. The velocity field was measured in the longitudinal–vertical plane at high spatial resolution...

Detection of False Stealthy Data Injection Attacks in Smart Meters Using Machine Learning and Blockchain Technology

Despite the benefits associated with the use of smart meters in advanced metering infrastructure, the widespread deployment of such meters has introduced vulnerabilities that leave power systems susceptible to stealthy false data injection attacks which cannot be detected by conv...

Surface-LimitedChemical and Physical Alteration ofPlastics during Composting: An In-Depth Field- and Lab-Scale Study

Abstract Plastics entering composting systems are frequently found as fragments in finished compost, yet the mechanisms controlling their degradation and persistence remain unclear. In this study, food waste amended with virgin, 30-day UV-weathered, and 30-day sunlight-weathered...

First-principles identification of optically efficient erbium centers in GaAs

Gallium arsenide (GaAs) doped with erbium (Er), a material of interest for optoelectronics and quantum information, has been studied for decades. Yet the formation of Er luminescence centers in the semiconductor host and their properties are still not well understood. Here we pre...