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Dynamic Characteristics of PEM Fuel Cells
IEEE 36th Conference on Power Electronics Specialists, 2005., 2006Fuel cell applications have become increasingly attractive. Therefore, comprehensive models, simulation and analysis tools are required to characterize fuel cell behavior. For years, the focus has been on describing the steady state characteristics of fuel cells, which is an important application but certainly not the only one.
Wingelaar, P.J.H. +2 more
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DYNAMICAL CHARACTERISTICS OF DISCRETIZED CHAOTIC PERMUTATIONS
International Journal of Bifurcation and Chaos, 2002Chaos theory has been applied to various fields where appropriate random sequences are required. The randomness of chaotic sequences is characteristic of continuous-state systems. Accordingly, the discrepancy between the characteristics of spatially discretized chaotic dynamics and those of original analog dynamics must be bridged to justify ...
Masuda, Naoki, Aihara, Kazuyuki
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Dynamic Stress-Strain Characteristics
The Journal of the Acoustical Society of America, 1962Mechanical hysteresis loops have been obtained for various polycrystalline solids in a manner similar to that used for magnetic materials. Half-wavelength samples are driven mechanically at a frequency of 14 000 cps producing stresses at the center of the sample of 40 000 lb/in2.
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Sextortion of Minors: Characteristics and Dynamics
Journal of Adolescent Health, 2018Sextortion (threats to expose sexual images to coerce victims to provide additional pictures, sex, or other favors) has been identified as an emerging online threat to youth, but research is scarce. We describe sextortion incidents from a large sample of victims (n = 1,385) and examine whether incidents occurring to minors (n = 572) are more or less ...
Janis, Wolak +3 more
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Dynamic characteristics of optical adaptive systems
Applied Optics, 1987The effect of time delay on characteristics of an optical adaptive system is considered. Classification of the optical adaptive systems as dynamic feedback systems has been made. Systems with constant delay, a highspeed adaptive system as well as a new class of systems, i.e., predicting adaptive systems, are investigated.
V E, Zuev, V P, Lukin
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Dynamic characteristics of prosthetic heart valves
Medical Engineering & Physics, 1995The relation between flow rate (Q) and transvalvular pressure-drop (DP) is of fundamental importance for a prosthetic heart valve tested in steady flow conditions. The Q-DP plot can thus be called the static characteristic of the valve. While in pulsatile flow, with time (t) as a parameter, the instantaneous Q(t)-DP(t) relation can also be obtained ...
J, She, M, Li, L, Huan, Y, Yu
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XX. Dynamic probe characteristics
The London, Edinburgh, and Dublin Philosophical Magazine and Journal of Science, 1947Summary Certain experimental errors inherent in the usual method of taking probe characteristics are discussed. An experimental method of avoiding these errors is described and the results of some preliminary experiments given. This work was carried out under the direction of Professor Emeleus whom the author wishes to thank for his keen interest and ...
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Dynamic Pumping Characteristics of the Hemopump®
The International Journal of Artificial Organs, 1994While pumping blood with the Hemopump® in sheep, the ability of predicting the instantaneous pump flow from the pressure difference over the pump system and pump parameters was investigated. For rotational speed n between 300 and 475 revolutions per second (rps), maximum pump flow QO(n) at zero pressure difference, internal pump resistance R(n), and ...
Kunst, E.E. +3 more
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Dynamic characteristics of solid propellant combustion
Symposium (International) on Combustion, 1963Combustion instability - response of solid propellant combustion zone to normally incident one-dimensional pressure ...
M.D. HORTON, E.W. PRICE
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