Results 241 to 250 of about 1,626,663 (291)
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SPIE Proceedings, 2006
We discuss the use of the water vapour radiometry technique for atmospheric phase correction as applied to the Atacama Large Millimetre Array (ALMA). The atmospheric conditions derived from site test instrumentation are summarised, and the nature of the phase correction problem quantified.
Alison Stirling +3 more
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We discuss the use of the water vapour radiometry technique for atmospheric phase correction as applied to the Atacama Large Millimetre Array (ALMA). The atmospheric conditions derived from site test instrumentation are summarised, and the nature of the phase correction problem quantified.
Alison Stirling +3 more
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Loudspeaker with phase correction
The Journal of the Acoustical Society of America, 1999The invention concerns a loudspeaker with a diaphragm which is electromagnetically induced to vibrate and is made of a central dome-shaped part and a conical part surrounding the latter, and a phase-correction device, consisting of a cone fixed in the housing with its base side matching the shape of the diaphragm and of two rings surrounding the cone ...
Martin Kling, Jurgen Freitag
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2012
In the context of network planning, equipment and load dynamics are of course the driving force behind phase shift voltage instability. In this chapter, for the 2-bus systems in a connected power system, we show that the voltage of all relevant buses (i.e., both bus-1 and bus-2) varies in the same way as the transmitted power. In the sequel, we examine
Stefano Bellucci +2 more
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In the context of network planning, equipment and load dynamics are of course the driving force behind phase shift voltage instability. In this chapter, for the 2-bus systems in a connected power system, we show that the voltage of all relevant buses (i.e., both bus-1 and bus-2) varies in the same way as the transmitted power. In the sequel, we examine
Stefano Bellucci +2 more
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Distributed Phase Correction Technique
2013 IEEE 19th International Symposium on Asynchronous Circuits and Systems, 2013We broadly use the term phase alignment to encompass the repositioning of edges in one signal with respect to edges in another ``reference'' signal. This paper introduces a phase alignment block, and exemplifies its operation in a couple of separate contexts.
Suwen Yang, Frankie Y. Liu
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Correctional Psychiatry and Phase Psychotherapy
American Journal of Psychiatry, 1974Although prison populations have been shown to be susceptible to all psychiatric disorders, psychiatry in correctional institutions is a very young branch of the discipline; its treatment approach and philosophy are still evolving. The author presents one approach to treating prison inmates that focuses on the different phases inmates go through from ...
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Surface‐consistent phase correction
SEG Technical Program Expanded Abstracts 2001, 2001We present a method for surface consistent phase correction. Based on the criterion of max-stack energy, it uses an iterative method to calculate the phase correction operators for the shots and receivers. This algorithm can eliminate the effects of statics and wavelet phase changes introduced by the couplings of shots and receivers, near surface ...
Jiuying Guo, Xingyuan Zhou
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Micron, 2023
A major challenge in the emerging field of low-dose electron microscopy lies in the development of drift correction algorithms against beam-induced specimen motion and compatible with highly noisy transmission electron microscopy (TEM) images. We report here a new drift correction method, namely geometric phase correlation (GPC), to correlate the ...
Yuan Yao, Yihan Zhu, Chongzhi Zhu
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A major challenge in the emerging field of low-dose electron microscopy lies in the development of drift correction algorithms against beam-induced specimen motion and compatible with highly noisy transmission electron microscopy (TEM) images. We report here a new drift correction method, namely geometric phase correlation (GPC), to correlate the ...
Yuan Yao, Yihan Zhu, Chongzhi Zhu
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Anticipatory phase correction in sensorimotor synchronization
Human Movement Science, 2012Studies of phase correction in sensorimotor synchronization often introduce timing perturbations that are unpredictable with regard to direction, magnitude, and position in the stimulus sequence. If participants knew any or all of these parameters in advance, would they be able to anticipate perturbations and thus regain synchrony more quickly?
Bruno H, Repp, Gordon P, Moseley
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Phase ripple correction: theory and application
Optics Letters, 2008Spectral phase ripple associated with novel dispersive devices can distort broadband optical signals. We present a digital postprocessing algorithm to correct for this distortion by exploiting the static deterministic nature of the ripple. This algorithm is demonstrated with empirical data for several systems employing chirped fiber Bragg gratings ...
Josh A, Conway +3 more
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Phase-error correction in digital holography
Journal of the Optical Society of America A, 2008The quality of images computed from digital holograms or heterodyne array imaging is degraded by phase errors in the object and/or reference beams at the time of measurement. This paper describes computer simulations used to compare the performance of digital shearing laser interferometry and various sharpness metrics for the correction of such phase ...
Samuel T, Thurman, James R, Fienup
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