scholarly journals Nonnegative PARAFAC2: A Flexible Coupling Approach

2018 ◽  
pp. 89-98 ◽  
Author(s):  
Jeremy E. Cohen ◽  
Rasmus Bro
Keyword(s):  
Flexible Coupling ◽  
Coupling Approach

scholarly journals A flexible coupling approach to multi-agent planning under incomplete information

2012 ◽  
Vol 38 (1) ◽  
pp. 141-178 ◽  
Author(s):  
Alejandro Torreño ◽  
Eva Onaindia ◽  
Óscar Sapena
Keyword(s):  
Incomplete Information ◽  
Flexible Coupling ◽  
Coupling Approach ◽  
Multi Agent ◽  
Multi Agent Planning

Rigid–flexible coupling dynamics with contact estimator for robot/PTL system

2020 ◽  
Vol 234 (4) ◽  
pp. 635-649
Author(s):  
Xiaoliang Zheng ◽  
Gongping Wu ◽  
Wei Jiang ◽  
Fei Fan ◽  
Jiale Zhu
Keyword(s):  
Power Transmission ◽  
Screw Theory ◽  
Three Dimensional ◽  
Nonlinear Dynamic Analysis ◽  
Rigid Bodies ◽  
Operating Conditions ◽  
Three Dimensional Model ◽  
Flexible Coupling ◽  
Coupling Approach ◽  
Coupling Dynamics

In order to enhance sampling efficiency and security when robot maintains power transmission line (PTL), this article develops a new approach for the rigid-flexible coupling dynamics of robot/PTL system, which decouples the large system into two small systems and solves them separately by estimating the contact force. The robot is modelled as a system of rigid bodies by screw theory, while the PTL system is modelled using absolute node coordinate formulation (ANCF). The integration of screw theory, ANCF and contact estimator trained by artificial neural network has not been accomplished before in the literature. The main contribution of this paper is to achieve this integration with the goal of developing a new and general approach for the nonlinear dynamic analysis of the interaction of the rigid maintenance robot with flexible PTL cable. A simplified two-dimensional example is used to compute the effect of the robot/PTL interaction under different operating conditions to have an understanding of the coupling approach between the two systems. A more detailed three-dimensional model was developed, and the results obtained validate the utility and effectiveness of our approach.

scholarly journals Rigid-flexible Coupling Analysis of Backhoe Hydraulic Excavator Working Device

2018 ◽  
Vol 38 ◽  
pp. 02020 ◽  
Author(s):  
Yongliang Yuan
Keyword(s):  
Optimization Design ◽  
Lightweight Design ◽  
Dynamic Performance ◽  
Coupling Model ◽  
Dynamics Simulation ◽  
Flexible Coupling ◽  
Coupling Approach ◽  
Solid Foundation ◽  
Prototype Software ◽  
Working Device

This paper develops a rigid-flexible coupling approach to predict the dynamic performance of the excavator, including the stress distribution and stress diagram of curves. In order to study the dynamic performance of the excavator during the mining process, the rigid-flexible coupling model of a excavator is established and carried out for dynamics simulation. The results show that the strength of excavator meets the expected requirement and there is a large optimization space. In order to reduce the mass of the excavator's boom, this paper optimizes the design of the boom. Based on the results of the optimization design, the rigid-flexible coupling simulation of the excavator was performed again, which verified that the strength of the boom is sufficient. Simulation results show that the virtual prototype software can effectively predict the dynamic performance of the excavator. This paper provides a solid foundation for further study of the lightweight design of the whole excavator component.

Glass transition for dipolar hard spheres: a mode-coupling approach

1998 ◽  
Vol 77 (2) ◽  
pp. 305-311 ◽  
Author(s):  
Thomas Scheidsteger, Rolf Schilling
Keyword(s):  
Glass Transition ◽  
Mode Coupling ◽  
Hard Spheres ◽  
Coupling Approach

Convergent Total Synthesis of Principinol D, a Rearranged Kaurane Diterpenoid

2019 ◽  
Author(s):  
Timothy Newhouse ◽  
Aneta Turlik ◽  
Yifeng Chen ◽  
Anthony Scruse
Keyword(s):  
Total Synthesis ◽  
Natural Product ◽  
Late Stage ◽  
Membered Ring ◽  
Entry Point ◽  
Ketone Reduction ◽  
Coupling Approach

<div> <p>The total synthesis of principinol D, a rearranged kaurane diterpenoid, is reported. This grayanane natural product is constructed via a convergent fragment coupling approach, wherein the central 7-membered ring is synthesized at a late stage. The bicyclo[3.2.1]octane fragment is accessed by a Ni-catalyzed α-vinylation reaction. Strategic reductions include a diastereoselective SmI<sub>2</sub>-mediated ketone reduction with PhSH and a new protocol for selective ester reduction in the presence of ketones. The convergent strategy reported herein may be an entry point to the larger class of kaurane diterpenoids.</p> </div>

1D and 2D model coupling approach for the development of operational spatial flood early warning system

2021 ◽  
pp. 1-16
Author(s):  
Sindhu Kalimisetty ◽  
Amanpreet Singh ◽  
Durga Rao Korada Hari Venkata ◽  
Venkateshwar Rao V ◽  
Vazeer Mahammood
Keyword(s):  
Early Warning ◽  
Early Warning System ◽  
Warning System ◽  
Model Coupling ◽  
Coupling Approach ◽  
2D Model

scholarly journals A catalytic asymmetric cross-coupling approach to the synthesis of cyclobutanes

2021 ◽  
Author(s):  
F. Wieland Goetzke ◽  
Alexander M. L. Hell ◽  
Lucy van Dijk ◽  
Stephen P. Fletcher
Keyword(s):  
Cross Coupling ◽  
Coupling Approach ◽  
Catalytic Asymmetric
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