Results 191 to 197 of about 4,007 (197)

The Efficiency and Cost‐Effectiveness of 3D‐Printed Patient‐Specific Guide Plate for Patients Undergoing Open‐Wedge High Tibial Osteotomy: A Multicentered Randomized Controlled Trial

Orthopaedic Surgery, Volume 18, Issue 3, Page 474-488, March 2026.
In a multicenter randomized trial of open‐wedge high tibial osteotomy, use of a 3D‐printed patient‐specific guide plate noted no adjusted difference in 12‐month WOMAC pain; small gains in ROM/chair‐stand; higher device cost; no QALY gain; no overall cost‐effectiveness.
Runhua Zhou, Yanjie Guo, Ruixin Wang, Manrong Xu, Qinglin Kang, Yun Shen, Jia Xu, Da Zhong, Shengdi Lu   +8 more
wiley   +1 more source

NOTES ON DISCRETE SUBGROUPS OF PU(2,1) WITH SCREW PARABOLIC ELEMENTS(Complex Analysis and Geometry of Hyperbolic Spaces)

NOTES ON DISCRETE SUBGROUPS OF PU(2,1) WITH SCREW PARABOLIC ELEMENTS(Complex Analysis and Geometry of Hyperbolic Spaces)
openaire  

Ultra-fast photoelectron transfer in bimetallic porphyrin optoelectrode for single neuron modulation. [PDF]

Nat Commun
Chen J, Chen F, Wang X, Zhuang H, Guo M, Wang L, Xie J, Zhang L, Liu H, Shi Y, Zhou J, Mao X, Lv M, Jiang X, Chen J, Liu Y, Jin D, Bu W.   +17 more
europepmc   +1 more source

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Evaluation of tracking performance of NPID double hyperbolic controller design for XY table ball-screw drive system

2017 11th Asian Control Conference (ASCC), 2017
This paper presents design and evaluation of a Nonlinear PID (NPID) Double Hyperbolic controller to improve tracking performance under the influence of disturbance forces in machine tools application. Popov stability criterion was applied in order to obtain the nonlinear proportional and the nonlinear integral gains for the controller.
S. C. K. Junoh, L. Abdullah, Z. Jamaludin, N. A. Anang, T. H. Chiew, S. N. S. Salim, Z. Retas   +6 more
openaire   +1 more source

Immersed hyperbolic and parabolic screw motion surfaces in the space $$\widetilde{\textit{PSL}}_{2}(\mathbb {R},\tau )$$ PSL ~ 2 ( R , τ )

Geometriae Dedicata, 2015
The aim of this paper is to study the geometric behaviors of hyperbolic and parabolic screw motion surfaces with constant mean curvature and which are immersed in the space $$\widetilde{\textit{PSL}}_{2}(\mathbb {R},\tau )$$
Qing Cui, Albetã Mafra, Carlos Peñafiel   +2 more
openaire   +1 more source

Screw dynamics modeling of parallel robots and its hyperbolic convergence law sliding mode control strategy

Journal of Vibration and Control
This study introduces a method to establish the dynamic model of a parallel robot using screw theory and the d’Alembert-Lagrange equation. Based on this model, a robust sliding mode control strategy utilizing hyperbolic convergence laws is proposed. The d’Alembert-Lagrange equation and screw theory are employed to construct a concise dynamic equation ...
Fengshuo Zhao, Yuguang Zhong, Zhengyu Zhang   +2 more
openaire   +1 more source