Results 271 to 280 of about 2,491,773 (298)

Accuracy of point cyclic reductions for poisson's equation

Journal of Computational Physics, 1981
Abstract Point cyclic reduction is a very fast method for solving Helmholtz's equation on a rectangle. However, it involves forming an approximation of the discretized equations, and by a fairly simple analysis we show conclusively that for the special case of Poisson's equation on a square the solution computed by point cyclic reductions does not ...
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On the Fixed-Point Accuracy Analysis of FFT Algorithms

IEEE Transactions on Signal Processing, 2008
In this paper, we investigate the effect of fixed-point arithmetics with limited precision for different fast Fourier transform (FFT) algorithms. A matrix representation of error propagation model is proposed to analyze the rounding effect. An analytic expression of overall quantization loss due to the arithmetic quantization errors is derived to ...
Wei-Hsin Chang, Truong Q. Nguyen
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Improving the accuracy of the multiple point stimulation technique

2009
Publisher Summary This chapter reviews that motor unit number estimation (MUNE) is a useful technique for diagnosing and monitoring the progression of diseases, in which motor neuron or axonal degeneration is a major feature. Multiple point stimulation (MPS) is one of the most widely used MUNE techniques.
Cheryl L, Porter, Arodi, Alvarez, Kelvin E, Jones, Lora A, Major, K Ming, Chan   +4 more
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Accuracy of interpreting pointing gestures in egocentric view

Proceedings of the 2016 ACM International Joint Conference on Pervasive and Ubiquitous Computing, 2016
Communicating spatial information by pointing is ubiquitous in human interactions. With the growing use of head-mounted cameras for collaborative purposes, it is important to assess how accurately viewers of the resulting egocentric videos can interpret pointing acts.
Deepak Akkil, Poika Isokoski
openaire   +1 more source

Precision CMG Control for High-Accuracy Pointing

Journal of Spacecraft and Rockets, 1973
Extremely precise gimbal control, as is necessary for CMG (Control Moment Gyro) high-accuracy-pointing control systems, is obtainable and has been demonstrated for large single-gimbal CMGs. A proportional-plusintegral control law, where the integral gain is substantially greater than the gradient of the gimbal "stiction" profile, makes possible wide ...
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Fiducial Point Placement and the Accuracy of Point-based, Rigid Body Registration

Neurosurgery, 2001
To demonstrate that the shape of the configuration of fiducial points is an important factor governing target registration error (TRE) in point-based, rigid registration.We consider two clinical situations: cranial neurosurgery and pedicle screw placement.
J B, West, J M, Fitzpatrick, S A, Toms, C R, Maurer, R J, Maciunas   +4 more
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Where are you pointing?

Proceedings of the SIGCHI Conference on Human Factors in Computing Systems, 2010
Deictic reference -- pointing at things during conversation -- is ubiquitous in human communication, and should also be an important tool in distributed collaborative virtual environments (CVEs). Pointing gestures can be complex and subtle, however, and pointing is much more difficult in the virtual world.
Nelson Wong, Carl Gutwin
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The accuracy of point-of-care glucose measurement

Annals of Clinical Biochemistry: International Journal of Laboratory Medicine, 2012
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Passive-Tuned Mass Dampers for the Pointing Accuracy Mitigation of VLBI Earth-Based Antennae Subject to Aerodynamic Gust

Applied Mechanics, 2023
Mostafa El Sayed
exaly  

Active disturbance rejection control for high pointing accuracy and rotation speed

Automatica, 2009
Shunli Li
exaly