This paper proposes a Negative-buoyancy Quad Tilt-rotor Autonomous Underwater Vehicle (NQTAUV), for which an attitude-tracking controller is designed for the hover and transition modes based SMA Cables on a disturbance-rejection control scheme.First, the structure of NQTAUV is illustrated, a mathematical model based on the Rodrigues parameters is p
Abstract Background This study analyses the effect of active participation in a sports club, physical activity and social networks on the development of lung cancer in patients who smoke.Our hypothesis is that study participants who lack social networks and do not actively participate in a sports club are at a greater risk for lung cancer than thos
The target spectrum, which is commonly used in feature extraction for underwater acoustic target classification, can be improperly recovered via conventional beamformer (CBF) owing to its frequency-variant spatial response and lead to degraded classification performance.In this paper, we SMA Cables propose a target spectrum reconstruction method un
In order to overcome the disadvantage that the dynamic sliding mode surface of the discrete global sliding mode control has a too long evolution time, a quick discrete global sliding mode control method is proposed.A decay function of the dynamic sliding mode surface which can decay to zero in Ski de fond - Skis a roulettes the finite time is const
Recently, reconfigurable intelligent surfaces (RISs) aided millimeter wave (mmWave) and terahertz (THz) communication systems have attracted interest as enablers for 5G and beyond networks.Although the static blockers’ impact can be eliminated by the optimal deployment of RISs, the effect of dynamic and self-blockage can only be reduced.Firs