High shares of intermittent renewable sources cause volatile frequency movements that could jeopardize the continuous operation grid. Liquid Air Energy Storage (LAES) is an emerging technology not only helps with decarbonisation energy sectors, but also has potentials for reliable ancillary services. In this paper, a hybrid LAES, wind turbine (WT), and battery storage system (BESS) used to inve...

OBJECTIVE This article reviews the evidence on the relationship between recent increases in utilization of diagnostic imaging and self-referral. The evidence shows that self-referral invariably leads to higher utilization and the attendant higher costs. CONCLUSION Because most physicians do not own advanced imaging equipment, their own best interests are being thwarted by the practice of self...

This paper presents a simple multi-objective control technique for cascaded hydro power plants, based on a centralized distributed power control system and local water level controllers. This effective power management solution enables to guarantee the generation program following with a very good accuracy, to participate to power-frequency Ancillary Services with the dynamic performance requir...