Results 261 to 270 of about 45,190 (303)

Strongly oscillating nonhomogeneous Dirichlet condition

2018
This chapter is dedicated to the homogenization of the Dirichlet problem with a strongly oscillating nonhomogeneous boundary data.
Doina Cioranescu, Alain Damlamian, Georges Griso   +2 more
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Oscillation threshold conditions in phonation

The Journal of the Acoustical Society of America, 1986
A small-oscillation theory is developed for determining threshold conditions for onset and release of vocal fold vibration as a function of lung pressure, tissue viscosity, glottal aperture, and surface wave velocity in the mucosa (vocal fold cover). It is found that oscillation threshold lung pressure increases in proportion to mucosal wave velocity ...
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Effect of Attenuation on Backward-Wave Oscillation Start Oscillation Condition

IEEE Transactions on Plasma Science, 2004
In a practical helix traveling-wave tube (TWT), there is always attenuator/sever for suppressing the oscillations, including backward-wave oscillation (BWO). The factors of the influencing BWO include start position of the attenuator, its length, and attenuation quantity.
Z. Duan, Y. Gong, W. Wang, Y. Wei, M. Huang   +4 more
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Oscillation Condition of Quartz-Oscillating Circuit in High Frequency (1)

IEEJ Transactions on Electronics, Information and Systems, 2009
A novel oscillation condition of quartz oscillating circuit with 622 MHz AT-Cut HFF-Xtal (=High Frequency Fundamental-crystal) oscillator is established. A circuit analysis is performed by combining a shunt capacitance (C0) with a negative resistance (-Rci) and a combination capacitance (Ct). A load resistance (RL) is obtained by combining C0 with -Rci.
Tomio Sato, Hirokazu Tanaka, Yoshinori Kanno   +2 more
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Start-oscillation conditions in modulated and unmodulated O-type oscillators

IRE Transactions on Electron Devices, 1961
The starting conditions for the O-type backward-wave oscillator are computed for large values of C, QC and d, using both digital and analog methods. A general method of solving complex polynomials called the "downhill" method is applied both to the secular equation and then to the RF voltage equation to obtain starting conditions.
J.E. Rowe, H. Sobol
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RHEED oscillations at special diffraction conditions

Surface Science, 1993
Abstract It is suggested that analysis of RHEED intensity oscillations can be simplified when diffraction conditions are chosen appropriately and two cases are presented as supporting evidence. The first is an out-of-phase condition where the specular reflection from the substrate is very weak. At this condition the oscillations can be described by a
P.A. Maksym, Z. Mitura, M.G. Knibb
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Backward-wave oscillator starting conditions

IRE Transactions on Electron Devices, 1957
Detailed calculations of the starting conditions for backward-wave oscillations were carried out in the region 0 < QC < 0.25. The coupled-mode theory is called upon to explain the complex nature of the propagation constants for backward-wave interaction.
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Extraction under vacuum-oscillation boiling conditions

Pharmaceutical Chemistry Journal, 2006
Anew method is proposed for the extraction of biologically active substances from raw plant materials, which makes use of an apparatus featuring the periodic formation and collapse of vapor bubbles in the processed suspension. The influence of the boil-up frequency, the amplitude of volume variations, and the temperature of extractant on the mechanism ...
E. V. Ivanov, M. V. Shvyrev, M. A. Artemova, S. A. Minina   +3 more
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Oscillation Conditions in Single Tuned Amplifiers

Journal of Applied Physics, 1946
An application of the calculus of finite differences has been made in obtaining the complete expression for the voltage gain of an n-stage amplifier having identical grid-to-plate impedances and plate loads when driven by a generator of any given internal impedance.
William R. Faust, Hugo M. Beck
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Sharp conditions for rapid nonlinear oscillations

Nonlinear Analysis: Theory, Methods & Applications, 2000
The authors consider the equation \[ \ddot x + g(x)=f(t,x,\dot x) \tag{1} \] where \(g:{\mathbb{R}}\to {\mathbb{R}}\) and \(f:[a,b]\times {\mathbb{R}}\times {\mathbb{R}}\to{\mathbb{R}}\) are \(C^1\)-functions, \(xg(x)>0\) for \(|x|\) large. \(g(x)\) is superlinear and associated boundary value problems are referred to as superlinear also. One says that
Klokov, Yu. A., Sadyrbaev, F. Zh.
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