Distinctly quantum friction effects of three types are surveyed: internal friction, measurement-induced friction, and quantum-fluctuation-induced friction. We demonstrate that external driving will lead to quantum internal friction, and critique the measurement-based interpretation of friction. We conclude that in general systems will experience internal and external quantum friction over and b...

The friction is detrimental to the normal work of the servo system, but the friction mechanism is very complicated. In this paper, Tustin friction model is used as the friction parameter identification, reflecting the phenomenon of friction in the system, and laying the foundation for the friction compensation. Tustin model is a nonlinear friction one, and the friction properties can be reflect...

S. Xu, H. Zhu, M. Styner, W. Gao, V. Jewells, D. Shen, and W. Lin Computer Science, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States, Biostatistics, University of North Carolina at Chapel Hill, United States, Psychiatry, University of North Carolina at Chapel Hill, United States, Radiology, University of North Carolina at Chapel Hill, United States, Neuroradiology, Un...

Background:   To assess the outcome of the remplissage arthroscopic surgical method in patients with anterior shoulder dislocation associated with Hill-Sachs lesion.     Methods:   Ten patients with anterior shoulder dislocations and Hill-Sachs lesions were entered into this study and were operated on by the remplissage arthroscopic surgical method. They were followed up 22 months after surgery...

From the *School of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, Division of Sports Medicine, Campus Heath Services, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, AliveCor Corporation, San Francisco, California, and xDivision of Cardiology, Cardiac Electrophysiology, University of North Carolina at Chapel Hill, Chapel Hill, Nort...