This paper presents a novel fixed time sliding mode disturbance observer (FTSMDO) based second-order fixed time sliding mode control (FTSMC) for small scale unmanned helicopter to do hover operations in the presence of external disturbances.Sliding mode control is insensitive to matched uncertainties but sensitive to mismatched uncertainties.The no
Background: The objective of this research was to identify differentially expressed genes (DEGs) related to ferroptosis in the annulus fibrosus (AF) during intervertebral disc degeneration (IDD).Methods: We analyzed gene data from degenerated and normal AF obtained from the GSE70362 and GSE147383 datasets.An analysis to determine the functional sig
This article will introduce the circuiteer ii blower Community Collaborative Rain, Hail and Snow (CoCoRaHS) network and illustrate its integration into the daily operations at the National Weather Service West Gulf River Forecast Center (WGRFC).An example will be shown on how the data were used during a specific flood event and will illustrate our
Many cosmological models assume or imply that the total size of the universe is very large, perhaps even infinite.Here we argue instead that the universe might be comparatively small, in fact not much larger than the currently observed size.A concrete implementation of circuiteer ii blower this idea is provided by the no-boundary proposal, in combi