Results 51 to 60 of about 332,036 (332)

The load bearing capacity of railway masonry arch bridges [PDF]

open access: yes, 2018
This paper deals with the way of calculating the load-bearing capacity of masonry arch railway bridges. It reviews the basic aspects of structural behaviour of these bridges, such as material non-linearity of masonry and interaction with the soil ...
Vokál, Marek, Drahorád, Michal
core   +1 more source

Preferences for Posttraumatic Osteoarthritis Prevention Strategies in Individuals With Anterior Cruciate Ligament Injury

open access: yesArthritis Care &Research, EarlyView.
Objective There is growing interest in evaluating new strategies to delay or prevent posttraumatic osteoarthritis (PTOA) in individuals who have sustained anterior cruciate ligament (ACL) injury. This study sought to determine characteristics of potential treatments that are acceptable to patients with ACL injury. Methods Participants with a history of
Kevin Kennedy   +9 more
wiley   +1 more source

Analysis on variable stiffness of a cable-driven parallel–series hybrid joint toward wheelchair-mounted robotic manipulator

open access: yesAdvances in Mechanical Engineering, 2019
The design of variable stiffness mechanism is of great importance to wheelchair-mounted robotic manipulators. In this article, the authors propose a cable-driven parallel–series hybrid joint toward wheelchair-mounted robotic manipulators with adjusting ...
Shan Zhang   +5 more
doaj   +1 more source

Development of a Rigidity Tunable Flexible Joint Using Magneto-Rheological Compounds—Toward a Multijoint Manipulator for Laparoscopic Surgery

open access: yesFrontiers in Robotics and AI, 2020
Laparoscopic surgery is a representative operative method of minimally invasive surgery. However, most laparoscopic hand instruments consist of rigid and straight structures, which have serious limitations such as interference by the instruments and ...
Sousaku Kitano   +5 more
doaj   +1 more source

Performance Optimization for Bionic Robotic Dolphin with Active Variable Stiffness Control

open access: yesBiomimetics, 2023
Aquatic animals such as fish and cetaceans can actively modulate their body stiffness with muscle to achieve excellent swimming performance under different situations.
Di Chen   +5 more
doaj   +1 more source

Impedence Control for Variable Stiffness Mechanisms with Nonlinear Joint Coupling [PDF]

open access: yes, 2008
The current discussion on physical human robot interaction and the related safety aspects, but also the interest of neuro-scientists to validate their hypotheses on human motor skills with bio-mimetic robots, led to a recent revival of tendondriven ...
Albu-Schäffer, Alin   +4 more
core  

Human Like Adaptation of Force and Impedance in Stable and Unstable Tasks [PDF]

open access: yes, 2011
—This paper presents a novel human-like learning con-troller to interact with unknown environments. Strictly derived from the minimization of instability, motion error, and effort, the controller compensates for the disturbance in the environment in ...
Albu-Schaeffer, A   +5 more
core   +1 more source

Impedance control for variable stiffness mechanisms with nonlinear joint coupling [PDF]

open access: yes2008 IEEE/RSJ International Conference on Intelligent Robots and Systems, 2008
The current discussion on physical human robot interaction and the related safety aspects, but also the interest of neuro-scientists to validate their hypotheses on human motor skills with bio-mimetic robots, led to a recent revival of tendon-driven robots.
Wimböck, Thomas   +4 more
openaire   +2 more sources

Design, modeling, and control of a variable stiffness elbow joint

open access: yesThe International Journal of Advanced Manufacturing Technology, 2022
AbstractNew technological advances are changing the way robotics are designed for safe and dependable physical human–robot interaction and human-like prosthesis. Outstanding examples are the adoption of soft covers, compliant transmission elements, and motion control laws that allow compliant behavior in the event of collisions while preserving ...
M. Baggetta   +3 more
openaire   +2 more sources

Validation of the Pediatric Arthritis Ultrasound Scoring System for the Elbow, Wrist, and Finger Joints in Children With Juvenile Idiopathic Arthritis

open access: yesArthritis Care &Research, EarlyView.
Objective We aimed to validate the Pediatric Arthritis Ultrasound Scoring System (PAUSS) for upper extremity joints in children with juvenile idiopathic arthritis (JIA). Methods Children with JIA were evaluated for elbow, wrist, or finger arthritis by clinical examination (CE) and musculoskeletal ultrasound (MSUS) with images scored according to the ...
Patricia Vega‐Fernandez   +12 more
wiley   +1 more source

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