Results 41 to 50 of about 13,001,808 (334)

An Inexpensive Method for Kinematic Calibration of a Parallel Robot by Using One Hand-Held Camera as Main Sensor

open access: yesSensors, 2013
This paper presents a novel method for the calibration of a parallel robot, which allows a more accurate configuration instead of a configuration based on nominal parameters. It is used, as the main sensor with one camera installed in the robot hand that
Ricardo Carelli   +4 more
doaj   +1 more source

Geometric Design and Prototyping of a (2-RRU)-URR Parallel Mechanism for Thumb Rehabilitation Therapy

open access: yesMachines, 2021
In this paper, the geometrical design of a (2-RRU)-URR (where R and U stand for the revolute and universal joints, respectively) parallel mechanism was demonstrated for thumb rehabilitation therapy.
Woo-hyeok Choi, Yukio Takeda
doaj   +1 more source

Evidence for a new symmetry breaking mechanism reorienting quantum Hall nematics

open access: yes, 2016
We report on the effect of in-plane magnetic field $B_\parallel$ on stripe phases in higher ($N=2,3$) Landau levels of a high-mobility 2D electron gas.
Gardner, G. C.   +4 more
core   +1 more source

Design and Workspace Analysis of Cable-rod Hybrid Drive Parallel Mechanism

open access: yesJixie chuandong, 2020
A new type of cable-rod hybrid drive parallel mechanism is proposed,and the overall device model is built in SolidWorks. The inverse kinematics model of the mechanism is derived by using the space vector analysis method.
Gao Zheng   +3 more
doaj  

Open Loop Position Control of Soft Hydraulic Actuators for Minimally Invasive Surgery

open access: yesApplied Sciences, 2021
Minimally invasive surgery (MIS) presents many constraints on the design of robotic devices that can assist medical staff with a procedure. The limitations of conventional, rigid robotic devices have sparked interest in soft robotic devices for medical ...
Mark Runciman   +3 more
doaj   +1 more source

PseudoSkyrmion Effects on Tunneling Conductivity in Coherent Bilayer Quantum Hall States at $\nu =1$ [PDF]

open access: yes, 2002
We present a mechamism why interlayer tunneling conductivity in coherent bilayer quantum Hall states at $\nu=1$ is anomalously large, but finite in the recent experiment.
A. Iwazaki   +22 more
core   +1 more source

2RPS/2SPS Parallel Mechanism and Kinematics Analysis

open access: yesJixie chuandong, 2020
Based on constraint spiral theory,the modified Grübler-Kutzbach formula is used to analyze the degree of freedom of 2RPS/2SPS parallel mechanism. The inverse positional solution equation is established by the space coordinate transformation equation and ...
Zhou Yijun, Chen Yefu, Su Ronghai
doaj  

Improving the Price of Anarchy for Selfish Routing via Coordination Mechanisms [PDF]

open access: yes, 2013
We reconsider the well-studied Selfish Routing game with affine latency functions. The Price of Anarchy for this class of games takes maximum value 4/3; this maximum is attained already for a simple network of two parallel links, known as Pigou's network.
D. Bernstein   +30 more
core   +3 more sources

Upacicalcet: A Novel Intravenous Calcimimetic Agent for Patients Undergoing Hemodialysis With Secondary Hyperparathyroidism

open access: yesTherapeutic Apheresis and Dialysis, EarlyView.
ABSTRACT Secondary hyperparathyroidism (SHPT) is a common complication in patients receiving maintenance dialysis, driven by calcium and phosphate metabolism disturbances. Calcimimetics are central to the management of SHPT by enhancing calcium‐sensing receptor sensitivity and reducing parathyroid hormone secretion.
Fumihiko Koiwa   +3 more
wiley   +1 more source

Modeling and Verification of Kinematics Error of 3UPS-PU Parallel Mechanism

open access: yesJixie chuandong, 2020
Taking the 3UPS-PU parallel mechanism,the experiment platform of sample package special test in the lunar exploration project as the study object,the error analysis model of 3UPS-PU parallel mechanism is established by using matrix differential method ...
Wang Na, Zhang Tao, Wang Qiuhong
doaj  

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