Results 241 to 250 of about 8,962,473 (314)
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Aircraft Engineering and Aerospace Technology, 1942
IN the article on simultaneous equations published in AIRCRAFT ENGINEERING, Vol. XI, May, 1939, pp. 199–200, the author exploited the powerful process of iteration. In the present article he deals similarly with an iterative method for finding the roots of a determinantal equation. Such a method was first given by Duncan and Collar in their paper “On a
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IN the article on simultaneous equations published in AIRCRAFT ENGINEERING, Vol. XI, May, 1939, pp. 199–200, the author exploited the powerful process of iteration. In the present article he deals similarly with an iterative method for finding the roots of a determinantal equation. Such a method was first given by Duncan and Collar in their paper “On a
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Frequency-tunable photonic frequency synthesis from an optical frequency comb reference
Optics Letters, 2017We present an architecture for photonic-assisted RF signal synthesization that uses as a reference the optical repetition frequency of an optical frequency comb. The setup, which is based on a multiharmonic photonic phase frequency detector, enables a perfect phase-locking of a voltage-controlled oscillator to multiples and submultiples of the ...
Pedro, Largo-Izquierdo +1 more
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Frequency standards and frequency measurement
Reports on Progress in Physics, 2002Recent years have brought major breakthroughs in the development, operation and mutual comparison of frequency standards in the microwave as well as in the optical frequency domain. Several cold-atom fountains have been developed, using caesium as well as rubidium atoms. Some of them have been compared among each other. Mutual agreement of the order of
A Bauch, H R Telle
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Frequency Measurement Utilizing the Frequency Shift of Optical Frequency Combs
Asia Communications and Photonics Conference/International Conference on Information Photonics and Optical Communications 2020 (ACP/IPOC), 2020A novel method of microwave frequency measurement is proposed and demonstrated by utilizing the frequency shift of optical frequency combs with a simplified system, enabling ultra-wide frequency measurement with its error less than 10kHz.
Yuan Ling, Yong Liu
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Finite-Frequency Identification: Test Frequency Bounds
Automation and Remote Control, 2001zbMATH Open Web Interface contents unavailable due to conflicting licenses.
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2011
Methods of estimating allele frequencies from data on unrelated and related individuals are described in this chapter. For samples of unrelated individuals with simple codominant markers, the natural estimator of allele frequencies can be used. For genetic data on related individuals, maximum likelihood estimation (MLE) can be applied to compute allele
Indra, Adrianto, Courtney, Montgomery
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Methods of estimating allele frequencies from data on unrelated and related individuals are described in this chapter. For samples of unrelated individuals with simple codominant markers, the natural estimator of allele frequencies can be used. For genetic data on related individuals, maximum likelihood estimation (MLE) can be applied to compute allele
Indra, Adrianto, Courtney, Montgomery
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Encoding voice fundamental frequency into vibrotactile frequency
The Journal of the Acoustical Society of America, 1979Measured in this study was the ability of eight hearing and five deaf subjects to identify the stress pattern in a short sentence from the variation in voice fundamental frequency (F0), when presented aurally (for hearing subjects) and when transformed into vibrotactile pulse frequency.
M, Rothenberg, R D, Molitor
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Frequency coupling in dual frequency capacitively coupled radio-frequency plasmas
Applied Physics Letters, 2006An industrial, confined, dual frequency, capacitively coupled, radio-frequency plasma etch reactor (Exelan®, Lam Research) has been modified for spatially resolved optical measurements. Space and phase resolved optical emission spectroscopy yields insight into the dynamics of the discharge.
Gans, Timo +6 more
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Optical Frequency Measurement Using Frequency Multiplication and Frequency Combs
2006We review the development of phase-coherent optical frequency measurement from its start with the harmonic frequency chain to the present use of optical comb generators. We demonstrate that the frequency fluctuations of a femtosecond comb laser—used in optical frequency measurement—can be eliminated completely from the measurement process, allowing ...
Harald Schnatz +4 more
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A frequency multiplier for reference frequency in frequency synthesizer systems
Analog Integrated Circuits and Signal Processing, 2017A low jitter frequency multiplier, which requires less power, area, and design complexity than reference multiplying PLL or DLL circuits can be used to generate the reference frequency for a low phase noise frequency synthesizer. This paper proposes a mixed signal solution based on the fact that the average DC value of a signal is proportional to its ...
Ihsan F. I. Albittar, Hakan Dogan
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