Results 41 to 50 of about 3,471 (201)

Kinematic Analysis and Dynamic Optimization Simulation of a Novel Unpowered Exoskeleton with Parallel Topology

Journal of Robotics, 2019
This paper studies the kinematic and dynamic analysis of a novel unpowered exoskeleton with topology. Firstly, the kinematics of the unpowered exoskeleton is analyzed by the derivation of the closed-loop position equation, and the forward position ...
Qiang Yan, Jianjun Zhang, Bin Li, Liang Zhou   +3 more
doaj   +1 more source

Design and Characterization of a Dual‐Mode Soft Robotic Flapping Propeller With Pneumatic Stiffness Modulation

Advanced Intelligent Systems, EarlyView.
A novel soft robotic propeller overcomes traditional efficiency‐flexibility tradeoffs via a hybrid pneumatic‐cable actuation strategy. This architecture enables active stiffness modulation with dual‐mode locomotion: tunable biomimetic swimming and earthworm‐inspired wriggling for confined spaces.
Jiazi Geng, Hua Shao, Yiyang Li, Lin Liang, Jinfeng Yang, Xianhong He, Fengran Xie   +6 more
wiley   +1 more source

An Approximate Optimal Maximum Range Guidance Scheme for Subsonic Unpowered Gliding Vehicles

International Journal of Aerospace Engineering, 2015
This study investigates the maximum gliding range problems of subsonic unpowered gliding vehicles and proposes an approximate optimal maximum range guidance scheme.
Dao-Chi Zhang, Qun-Li Xia, Qiu-Qiu Wen, Guan-qun Zhou   +3 more
doaj   +1 more source

Persistent magnetic resonance imaging‐derived static anterior tibial translation after anterior cruciate ligament reconstruction is associated with elevated cartilage T2 relaxation times but not serum biomarkers

Knee Surgery, Sports Traumatology, Arthroscopy, EarlyView.
Abstract Purpose Persistent, static anterior tibial translation (sATT) alterations following anterior cruciate ligament reconstruction (ACLR) may influence cartilage health. T2 relaxation times and serum biomarkers of cartilage degradation/bone resorption provide insight into osteoarthritis development.
Manuel Angel Romero‐Padron, Tyler Kallman, Mark Amirtharaj, Neal Weldon, Melissa Manzer, Balasrinivasa Rao Sajja, Matthew Alan Tao, Elizabeth Wellsandt   +7 more
wiley   +1 more source

Regulating Metabolic Energy Among Joints During Human Walking Using a Multiarticular Unpowered Exoskeleton

IEEE transactions on neural systems and rehabilitation engineering, 2021
Researchers have found that the walking economy can be enhanced by recycling ankle metabolic energy using an unpowered ankle exoskeleton. However, how to regulate multiarticular energy to enhance the overall energy efficiency of humans during walking ...
Tiancheng Zhou, C. Xiong, Juanjuan Zhang, Wenbin Chen, Xiaolin Huang   +4 more
semanticscholar   +1 more source

Tailoring Model‐Based Systems Engineering for Sub‐100 g PlanarSats: A Power‐First View Stack

Systems Engineering, EarlyView.
ABSTRACT This paper addresses how to apply model‐based systems engineering (MBSE) to ultrasmall planar satellites under severe power and resource constraints. PlanarSats are sub‐100‐gram spacecraft built as single printed‐circuit boards where the same surface must host both electronics and solar cells, so power generation, geometry, and component ...
Mehmet Şevket Uludaǧ, Alim Rüstem Aslan   +1 more
wiley   +1 more source

Platelet function in patients undergoing major non‐cardiac vascular surgery (PLUGS): a prospective cohort study*

Anaesthesia, Volume 81, Issue 9, Page 1236-1244, September 2026.
Summary Introduction Patients who require major vascular surgery often receive antiplatelet therapy for primary or secondary prevention of cardiovascular disease. Clopidogrel resistance and variability in platelet recovery after drug discontinuation pose clinical challenges, particularly for regional anaesthesia and blood management.
Akshay Shah, Grace Polley, Kasia Bera, Keith Maher, Stephen Von‐Kier, Antonio Barbosa, Louis Corrigan, Sabeena Sharma, Peter Baker, Stuart R. McKechnie, Michael J. Desborough, on behalf of the PLUGS Investigators   +11 more
wiley   +1 more source

Optimization of variable-direction long-range trajectory for the unpowered flight vehicle

Vietnam Journal of Science and Technology
The study presents a new problem of trajectory for unpowered flight vehicles. The research object includes fixed-wing unpowered flight vehicles operating in the range of transonic and subsonic speeds.
Tuan Hung Pham, D. Nguyen
semanticscholar   +1 more source

Oligoprogressive renal cell carcinoma: What is the role of surgery?

BJU International, Volume 138, Issue 2, Page 219-228, August 2026.
Objective To provide an overview of the biological mechanism and pattern of oligoprogression in renal cell carcinoma (RCC) and the most updated role of surgery in this setting, highlighting scientific gaps and informing future implications. Methods A non‐systematic search of PubMed/MEDLINE was performed in August 2025 including guidelines, reviews, and
Chiara Re, William H.J. Ince, Leo Bickley, James P. Blackmur, Mouhamad H. Ismail, Justicia Kyeremeh, Teele Kuusk, Eva Mendes Serrao, James O. Jones, Grant D. Stewart   +9 more
wiley   +1 more source

An intelligent course keeping active disturbance rejection controller based on double deep Q‐network for towing system of unpowered cylindrical drilling platform

International Journal of Robust and Nonlinear Control, 2021
Towing is a widely used mode of transportation in offshore engineering, and towing of unpowered platforms is of particular significance. However, the addition of unpowered facilities has increased the difficulty of ship maneuvering.
Yuemin Zheng, Jin Tao, Qinglin Sun, Hao Sun, Mingwei Sun, Zengqiang Chen   +5 more
semanticscholar   +1 more source