Results 201 to 210 of about 126,840,927 (235)

Application of vectors to relative velocity

International Journal of Mathematical Education in Science and Technology, 2004
The topic ‘relative velocity’ has recently been introduced into the Cambridge Ordinary Level Additional Mathematics syllabus under the application of Vectors. In this note, the results of relative velocity and the ‘reduction to rest’ technique of teaching relative velocity are derived mathematically from vector algebra, in the hope of providing ...
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Pulse Wave Velocity Measurement with Velocity Vector Imaging

2013
Pulse-wave velocity (PWV) is typically used for estimating the stiffness of arteries This study was to implement a new method and rapid two-dimensional ultrasound method for the measurement of PWV in the carotid artery. The longitudinal dynamic image of CCA was analyzed using syngo Velocity Vector Imaging technology.
Cun Liu, Qigang Zhu, Yanling Zheng, Yuanliu He, Hongxia Xu, Juan Su, Lili Zhang, Xiaohong Zhou, Zhe Ma, Changchun Liu   +9 more
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Trajectory optimization in terms of quasi-velocity vector

Proceedings of the 45th IEEE Conference on Decision and Control, 2006
This paper deals with optimization of unnormalized quasi-velocities (UQV) introduced originally by Jain and Rodriguez (1995). The UQV are based on a decomposition of the manipulator mass matrix. The optimization is based on the Pontryagin maximum principle.
Przemyslaw Herman, Krzysztof Kozlowski
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Velocity vectors for features of sequential oceanographic images

IEEE Transactions on Geoscience and Remote Sensing, 1998
This paper investigates a fundamental problem of determining the position, orientation, and velocity field of the Gulf Stream in time-varying imagery. The authors propose an approximation method to characterize the deformation of these image motions for the purpose of estimating the velocity field of these images.
E. C. Cho, Guna Seetharaman, Ronald J. Holyer, Matthew Lybanon   +3 more
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The Discovery of the Vector Representation of Moments and Angular Velocity

Archive for History of Exact Sciences, 2002
The author studies the discovery of vector representation of moments and angular velocity. In this deep study chapters are devoted to: Frisi and the parallelogram of infinitesimal rotation (1759); Euler and the vector representation of moments of forces (1780); Laplace and the invariable plane (1798); Prony and the diffusion of Euler's formula (1800 ...
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P-Vector Spirals and Determination of Absolute Velocities

Journal of Oceanography, 2000
A simple method to invert the absolute geostrophic velocity on potential-density surfaces is developed based on McDougall’s (1988) conservation statements on potential-density surfaces and Chu’s (1995) and McDougall’s (1995) P-vector concept. This method has a capability to handle a system with diapycnal velocities and non-coincidence of potential ...
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VELOCITY VECTOR CONTROL OF AIRCRAFT

Автометрия, 2021
Yu. N. Zolotukhin, K. Yu. Kotov, A. S. Mal’tsev, A. A. Nesterov, A. P. Yan   +4 more
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Vectors, Velocities, and Variations

School Science and Mathematics, 1979
Bonnie H. Litwiller, David R. Duncan
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Velocity Vector Fields

2022
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A scheme to measure velocity vector of a meteor by meteor radar

Planetary and Space Science, 2022
Li Wang, Wu Xiongbin
exaly