Results 231 to 240 of about 1,455,426 (270)
A Supramolecular Ferroelectric With Two Sublattices and Polarization Dependent Conductivity. [PDF]
Adv Sci (Weinh)Mager H +6 more
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Force interaction and 3D pole movement in double poling
Scandinavian Journal of Medicine and Science in Sports, 2011 The aim of this study was to analyze double poling using combined kinetic and 3D kinematic analysis at high skiing speeds as regards pole force components, pole angles and pole behavior during the poling and swing phase.
Hans-Christer Holmberg +2 more
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Reliability and validity of a new double poling ergometer for cross-country skiers
Journal of Sports Sciences, 2008 Thirty-eight competitive cross-country skiers were divided into three groups to assess the reliability and validity of a new double poling ergometer. Group A (n = 22) performed two maximal 60-s tests, Group B (n = 8) repeated peak oxygen uptake tests on ...
Hans-Christer Holmberg
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Mechanical behaviour of cross-country ski racing poles during double poling
Sports Biomechanics, 2013The purpose of this study was to evaluate the behaviour of cross-country ski poles during double poling on a treadmill using three-dimensional kinematics. The results were compared with standard laboratory tests of the pole manufacturers. A total of 18 skiers were analysed at two speeds (85% and 95% of the maximal speed) at grades of 1.5% and 7 ...
Thomas, Stöggl, Lars, Karlöf
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Fault-Tolerant Pole-Placement in Double-Integrator Networks
IEEE Transactions on Automatic Control, 2012The technical note considers a network of agents with double-integrator internal dynamics. They share information on their position states according to an arbitrary topology. For such a system, the design of a fault-tolerant decentralized regulator is addressed.
LOCATELLI, ARTURO +1 more
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Double Regge poles and Regge cuts
Il Nuovo Cimento A Series 10, 1967The effect of double Regge pole insertions in generating cuts is investigated first in a perturbation theory model and then more generally in terms of the Froissart-Gribov continuation. It is found that they only generate cuts whose trajectories are identical with those associated with single Regge pole insertions.
P. Osborne, J. C. Polkinghorne
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Double Poles and the Mysterious "t" Factor
IEEE Transactions on Education, 1974This paper presents a simple visual explanation of the mysterious "t" factor associated with a Laplace transform having repeated poles. This iconic explication provides insight into why it is practically impossible to tell from observation of the impulse-response waveform whether two poles of a system function are, in fact, exactly coincident or merely
Richard D. Healy, W. H. Huggins
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Torque Modeling of Spherical Actuators with Double-layer Poles
2006 IEEE/RSJ International Conference on Intelligent Robots and Systems, 2006This paper presents a design concept of spherical actuators including a ball-shaped rotor with two layers of permanent-magnet (PM) poles and a spherical-shell-like stator with two layers of circumferential air-core coils. Corresponding to the poles configuration, the torque model of the spherical actuator has been derived. The magnetic field as well as
Liang Yan 0001 +5 more
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Double-pole decay of Rabi oscillations
Physics Letters A, 1979Abstract The damping of Rabi oscillations in laser spectroscopy for a critical value of the atom—laser interaction strength is shown to be example of a double-pole decay law.
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