AMALRIC SIGN: AN AUGUR OF OPHTHALMIC ARTERY OCCLUSION

Amalric sign: An augur of ophthalmic artery occlusion

A 75-year-old man presented to us with sudden onset of profound vision loss in his right eye and was identified as suffering from an ophthalmic artery occlusion.Apart from the retinal whitening and box-carring of the retinal Insulated Beverage Containers/Dispensers arteries, there were characteristic triangular patches of retinal whitening in the m

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Disturbance-Observer-Based Fixed-Time Backstepping Control for Quadrotors with Input Saturation and Actuator Failure

This paper investigates the fixed-time tracking control problem of an unmanned aerial vehicle (UAV) considering the disturbance, input saturation, and actuator failure.According to the hierarchical control principle, the UAV Suncatcher Ornament dynamics are decomposed into a translational and rotational loop to accommodate the controller design.A n

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