The Experts below are selected from a list of 425034 Experts worldwide ranked by ideXlab platform
Simon A J Handley - One of the best experts on this subject based on the ideXlab platform.
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improving cpr performance using an audible Feedback System suitable for incorporation into an automated external defibrillator
Resuscitation, 2003Co-Authors: Anthony J. Handley, Simon A J HandleyAbstract:Abstract Background: It has been shown that a computer-based audible Feedback System can improve acquisition and retention of basic life support (BLS) skills. This System is being developed to work in association with an automated external defibrillator (AED). Aim: To determine if such a Feedback System is likely to improve the quality of CPR performed by trained nurses whilst using an AED. Method: Thirty-six general nurses performed 3 min of BLS on a manikin connected to a laptop computer running an experimental software program. After initial testing they were randomly allocated to control or ‘Feedback' groups. Both groups then performed a further 3 min of BLS, but those in the Feedback group received audible corrective instructions from the computer when errors of technique were detected. Results: The group receiving Feedback were significantly better than the control group at performing inflations ( P =0.004) and achieving the correct depth of chest compression ( P Conclusions: The results suggest that if the Feedback System were to be incorporated into an AED, it could lead to better performance of CPR during a resuscitation attempt.
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improving cpr performance using an audible Feedback System suitable for incorporation into an automated external defibrillator
Resuscitation, 2003Co-Authors: Anthony J. Handley, Simon A J HandleyAbstract:Abstract Background: It has been shown that a computer-based audible Feedback System can improve acquisition and retention of basic life support (BLS) skills. This System is being developed to work in association with an automated external defibrillator (AED). Aim: To determine if such a Feedback System is likely to improve the quality of CPR performed by trained nurses whilst using an AED. Method: Thirty-six general nurses performed 3 min of BLS on a manikin connected to a laptop computer running an experimental software program. After initial testing they were randomly allocated to control or ‘Feedback' groups. Both groups then performed a further 3 min of BLS, but those in the Feedback group received audible corrective instructions from the computer when errors of technique were detected. Results: The group receiving Feedback were significantly better than the control group at performing inflations ( P =0.004) and achieving the correct depth of chest compression ( P Conclusions: The results suggest that if the Feedback System were to be incorporated into an AED, it could lead to better performance of CPR during a resuscitation attempt.
Andreas Kugi - One of the best experts on this subject based on the ideXlab platform.
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stability of an euler bernoulli beam with a nonlinear dynamic Feedback System
IEEE Transactions on Automatic Control, 2016Co-Authors: Maja Miletic, Dominik Sturzer, Anton Arnold, Andreas KugiAbstract:This paper is concerned with the stability analysis of a lossless Euler-Bernoulli beam that carries a tip payload which is coupled to a finite-dimensional nonlinear dynamic Feedback System. The latter comprises dynamic Systems satisfying the nonlinear KYP lemma, which may represent the closed-loop dynamics of subordinate controlled actuators, as well as the interaction with a nonlinear passive environment. Global-in-time wellposedness and asymptotic stability is rigorously proven for the resulting closed-loop partial differential equation–ordinary differential equation (PDE–ODE) System. The analysis is based on semigroup theory for the corresponding first order evolution problem. For the large-time analysis, precompactness of the trajectories is shown by deriving uniform-in-time bounds on the solution and its time derivatives.
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stability of an euler bernoulli beam with a nonlinear dynamic Feedback System
arXiv: Analysis of PDEs, 2015Co-Authors: Maja Miletic, Dominik Sturzer, Anton Arnold, Andreas KugiAbstract:This paper is concerned with the stability analysis of a lossless Euler-Bernoulli beam that carries a tip payload which is coupled to a nonlinear dynamic Feedback System. This setup comprises nonlinear dynamic boundary controllers satisfying the nonlinear KYP lemma as well as the interaction with a nonlinear passive environment. Global-in-time wellposedness and asymptotic stability is rigorously proven for the resulting closed-loop PDE-ODE System. The analysis is based on semigroup theory for the corresponding first order evolution problem. For the large-time analysis, precompactness of the trajectories is shown by deriving uniform-in-time bounds on the solution and its time derivatives.
Daniel Fried - One of the best experts on this subject based on the ideXlab platform.
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automated ablation of dental composite using an ir pulsed laser coupled to a plume emission spectral Feedback System
Lasers in Surgery and Medicine, 2017Co-Authors: Andrew T Jang, Kenneth H Chan, Daniel FriedAbstract:Objective The purpose of this study is to assemble a laser System for the selective removal of dental composite from tooth surfaces, that is feasible for clinical use incorporating a spectral Feedback System, a scanning System, articulating arm and a clinical hand-piece, and evaluate the performance of that System on extracted teeth. Methods Ten extracted teeth were collected and small fillings were placed on the occlusal surface of each tooth. A clinical System featuring a CO2 laser operating at 50 Hz and spectral optical Feedback was used to remove the composite. Removal was confirmed using a cross polarized optical coherence tomography (CP-OCT) System designed for clinical use. Results The System was capable of rapidly removing composite from small preparations on tooth occlusal surfaces with a mean loss of enamel of less than 20 μm. Conclusion We have demonstrated that spectral Feedback can be successfully employed in an automated System for composite removal by incorporating dual photodiodes and a galvanometer controlled CO2 laser. Additionally, the use of registered OCT images presents as a viable method for volumetric benchmarking. Overall, this study represents the first implementation of spectral Feedback into a clinical hand-piece and serves as a benchmark for a future clinical study. Lasers Surg. Med. © 2017 Wiley Periodicals, Inc.
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automated ablation of dental composite using an ir pulsed laser coupled to a plume emission spectral Feedback System
Proceedings of SPIE, 2017Co-Authors: Andrew T Jang, Kenneth H Chan, Daniel FriedAbstract:Dental composites are used as restorative materials for filling cavities, shaping, and covering teeth for esthetic purposes, and as adhesives. Dentists spend more time replacing existing restorations that fail than they do placing new restorations. Tooth colored restorations are difficult to differentiate from the surrounding tooth structure making them challenging to remove without damaging healthy tooth structure. Previous studies have demonstrated that CO 2 lasers in conjunction with spectral Feedback can be used to selectively remove composite from tooth surfaces. The purpose of this study is to assemble a System that is feasible for clinical use incorporating a spectral Feedback System, a scanning System, articulating arm and a clinical handpiece and then evaluate the performance of that System on extracted teeth. In addition, the selectivity of composite removal was analyzed using a high-speed optical coherence tomography System that is suitable for clinical use. The System was capable of rapidly removing composite from small preparations on tooth occlusal surfaces with a mean loss of enamel of less than 20-μm.
Masayuki Fujita - One of the best experts on this subject based on the ideXlab platform.
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passivity based dynamic visual Feedback control for three dimensional target tracking stability and l_ 2 gain performance analysis
IEEE Transactions on Control Systems and Technology, 2007Co-Authors: Masayuki Fujita, Hiroyuki Kawai, Mark W SpongAbstract:This paper investigates vision-based robot control based on passivity for three-dimensional (3-D) target tracking. First, using standard body-attached coordinate frames (the world frame, camera frame, and object frame), we represent the relative position and orientation between a moving target and a camera as an element of SE(3). Using this representation we derive a nonlinear observer to estimate the relative rigid body motion from the measured camera data. We then establish the relationship between the estimation error in a 3-D workspace and in the image plane. We show passivity of the dynamic visual Feedback System by combining the passivity of both the visual Feedback System and the manipulator dynamics which allows us to prove stability in the sense of Lyapunov for the full 3-D dynamic visual Feedback System. The L2 -gain performance analysis, which deals with the disturbance attenuation problem, is then considered via dissipative Systems theory. Finally, experimental results are presented to verify the stability and L2-gain performance of the dynamic visual Feedback System
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passivity based dynamic visual Feedback control with uncertainty of camera coordinate frame
American Control Conference, 2005Co-Authors: Hiroyuki Kawai, Toshiyuki Murao, Masayuki FujitaAbstract:In this paper, we consider the dynamic visual Feedback control with the uncertainty of the camera coordinate frame based on the passivity. Firstly the brief summary of the nominal visual Feedback Systems with a fixed camera is given with the fundamental representation of a relative rigid body motion. Secondly we construct the visual Feedback System with uncertainty which is not be limited to the orientation around the optical axis. Next, we derive the passivity of the dynamic visual Feedback System by combining the manipulator dynamics and the visual Feedback System. Based on the passivity, stability and L/sub 2/-gain performance analysis are discussed. Finally the validity of the proposed control law can be confirmed by comparing the simulation results.
Anthony J. Handley - One of the best experts on this subject based on the ideXlab platform.
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improving cpr performance using an audible Feedback System suitable for incorporation into an automated external defibrillator
Resuscitation, 2003Co-Authors: Anthony J. Handley, Simon A J HandleyAbstract:Abstract Background: It has been shown that a computer-based audible Feedback System can improve acquisition and retention of basic life support (BLS) skills. This System is being developed to work in association with an automated external defibrillator (AED). Aim: To determine if such a Feedback System is likely to improve the quality of CPR performed by trained nurses whilst using an AED. Method: Thirty-six general nurses performed 3 min of BLS on a manikin connected to a laptop computer running an experimental software program. After initial testing they were randomly allocated to control or ‘Feedback' groups. Both groups then performed a further 3 min of BLS, but those in the Feedback group received audible corrective instructions from the computer when errors of technique were detected. Results: The group receiving Feedback were significantly better than the control group at performing inflations ( P =0.004) and achieving the correct depth of chest compression ( P Conclusions: The results suggest that if the Feedback System were to be incorporated into an AED, it could lead to better performance of CPR during a resuscitation attempt.
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improving cpr performance using an audible Feedback System suitable for incorporation into an automated external defibrillator
Resuscitation, 2003Co-Authors: Anthony J. Handley, Simon A J HandleyAbstract:Abstract Background: It has been shown that a computer-based audible Feedback System can improve acquisition and retention of basic life support (BLS) skills. This System is being developed to work in association with an automated external defibrillator (AED). Aim: To determine if such a Feedback System is likely to improve the quality of CPR performed by trained nurses whilst using an AED. Method: Thirty-six general nurses performed 3 min of BLS on a manikin connected to a laptop computer running an experimental software program. After initial testing they were randomly allocated to control or ‘Feedback' groups. Both groups then performed a further 3 min of BLS, but those in the Feedback group received audible corrective instructions from the computer when errors of technique were detected. Results: The group receiving Feedback were significantly better than the control group at performing inflations ( P =0.004) and achieving the correct depth of chest compression ( P Conclusions: The results suggest that if the Feedback System were to be incorporated into an AED, it could lead to better performance of CPR during a resuscitation attempt.
