Results 61 to 70 of about 2,266,908 (195)

A Review on Reconfigurable Parallel Mechanisms: Design, Analysis and Challenge

Engineering
Reconfigurable parallel mechanisms were first discovered in response to the growing demand for flexible and adaptive systems in various fields. Unlike traditional mechanisms, which are designed for specific tasks and have fixed topology and mobility ...
Lin Wang, James W. Zhang, Dan Zhang
doaj   +1 more source

Changing Assembly Modes without Passing Parallel Singularities in Non-Cuspidal 3-R\underline{P}R Planar Parallel Robots

, 2008
This paper demonstrates that any general 3-DOF three-legged planar parallel robot with extensible legs can change assembly modes without passing through parallel singularities (configurations where the mobile platform loses its stiffness).
Bonev, Ilian, Briot, Sébastien, Chablat, Damien, Wenger, Philippe   +3 more
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Medicines in parallel trade in the European Union: a gravity specification [PDF]

, 2007
While recent research has explored the phenomenon of drug parallel trade in regulated environments such as the European Union (EU), or the European Economic Area, little is known about the mechanisms that explain its origin or the role of the ...
Costa-i-Font, Joan, Kanavos, Panos
core  

Parallel mechanisms with adjustable link parameters

Proceedings. 2000 IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS 2000) (Cat. No.00CH37113), 2002
There has been always a workspace problem with parallel mechanisms. This paper discusses the workspace of the parallel mechanisms and its enlargement by adjusting their link parameters. The basic idea is to cover a whole required range of workspace with small pieces of one.
Tatsuo Arai, Yoshihiko Koseki, Kazunari Takayama, Kenji Inoue, Yasushi Mae   +4 more
openaire   +2 more sources

Dynamic Performance Evaluation of a 2-DoF Planar Parallel Mechanism

International Journal of Advanced Robotic Systems, 2012
The acceleration performance function and dynamic performance evaluation combining the acceleration, velocity, gravity and external force of a 2-DoF planar parallel mechanism are presented in this paper.
Hao Qi, Guan Liwen, Wang Jianxin
doaj   +1 more source

Evolution of plasma turbulence excited with particle beams

, 2012
Particles ejected from the Sun that stream through the surrounding plasma of the solar wind are causing instabilities. These generate wavemodes in a certain frequency range especially within shock regions, where particles are accelerated. The aim of this
Bavassano, Bell, Bershadskii, Bigot, Bruno, Chen, Drury, Elsässer, F. Spanier, Forbes, Forbush, Galinsky, Goldreich, Goldreich, Hollweg, Iroshnikov, Jin, Kahler, Kolmogorov, Kraichnan, Landi, Lee, Lithwick, Maron, Mininni, Ng, Orszag, Perez, Reames, S. Lange, Schlickeiser, Sridhar, Telloni, Tu, Vainio, Vainio, Vainio, Vainio, Vainio   +38 more
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Accelerating cryptographic computation with parallel computing mechanisms in Android platform

网络与信息安全学报, 2019
Aiming to accelerate cryptographic computation in Android platform,parallel computing method is adopted.Utilizing RenderScript framework in Android platform,big integer multiplication operation is implemented in parallel,which provides efficient and fast
Ning FANG, Weibing CAO, Donghe NI, Guandong DI   +3 more
doaj   +3 more sources

A Novel Family of Parallel Mechanisms With Synchronous Telescopic Parallelograms

IEEE Access, 2019
A novel synchronous telescopic parallelogram mechanism with movement realized by a belt drive is proposed, from which a compound kinematic limb is derived. According to the configuration derivation, a class of two-translation (2T), three-translation (3T)
Hongzhou Wang, Ru Yang, Xi Kang, Zhen Jiang, Xiaohui Zou   +4 more
doaj   +1 more source

B -> J/psi K^* Decays in QCD Factorization

, 2002
The hadronic decay B -> J K^* is analyzed within the framework of QCD factorization. The spin amplitudes A_0, A_\parallel and A_\perp in the transversity basis and their relative phases are studied using various different form-factor models for B-K ...
A. Ali, A.S. Dighe, B. Aubert, C.P. Jessop, D. Melikhov, G. Buchalla, H.Y. Cheng, H.Y. Cheng, H.Y. Cheng, H.Y. Cheng, Hai-Yang Cheng, J.G. Körner, K. Abe, K.C. Yang, Kwei-Chou Yang, L. Del Debbio, M. Bauer, M. Beneke, M. Beneke, M. Gourdin, M. Neubert, M. Suzuki, M. Wirbel, P. Ball, P. Ball, P. Ball, P. Ball, T. Affolder, T.E. Coan, W-Y.P. Hwang, W.S. Hou, Y.H. Chen, Y.Y. Keum, Y.Y. Keum, Y.Y. Keum, Yong-Yeon Keum   +35 more
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Simulation modeling of parallel mechanisms [PDF]

, 2012
Paralelné mechanizmy sú charakteristické svojou kinematickou štruktúrou prezento-vanou uzatvoreným kinematickým reťazcom. Koncový efektor mechanizmu je potom viazaný k základni viac než jedným ramenom.
Cintula, Ladislav
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