Results 211 to 220 of about 50,824 (251)
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Generalized entropy decay rates of one-dimensional maps
Physical Review A, 1988A series of entropies, approaching the order-q Renyi's entropies when the length of orbits tends to infinity, is considered. Their scaling form is determined for chaotic one-dimensional maps. For the characteristic relaxation time a general expression is derived, and it is shown to be closely related to the eigenvalues of a generalized Frobenius-Perron
, Csordás, , Szépfalusy
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Optics and Lasers in Engineering, 2008
Laser pulse heating of solid surface and entropy generation during the heating process are considered. Time exponentially decaying pulse is accommodated in the analysis and the laser pulse parameter (β1/β2) resulting in minimum entropy generation rate is computed. Analytical solutions for temperature rise are presented and volumetric entropy generation
H. Al-Qahtani, B.S. Yilbas
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Laser pulse heating of solid surface and entropy generation during the heating process are considered. Time exponentially decaying pulse is accommodated in the analysis and the laser pulse parameter (β1/β2) resulting in minimum entropy generation rate is computed. Analytical solutions for temperature rise are presented and volumetric entropy generation
H. Al-Qahtani, B.S. Yilbas
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Entropy generation in silicon thin film: Influence of film thickness on entropy generation rate
Journal of Non-Equilibrium Thermodynamics, 2014Abstract Thermodynamic irreversibility in thin silicon film is considered and entropy generation in the film is predicted. The Boltzmann equation is incorporated to formulate the phonon transport in the film due to temperature disturbance across the film edges. Frequency-dependent and frequency-independent phonon transport are introduced
Haider Ali, Bekir S. Yilbas
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Determination of LEDs degradation with entropy generation rate
Journal of Applied Physics, 2017We propose a method to assess the degradation and aging of light emitting diodes (LEDs) based on irreversible entropy generation rate. We degraded several LEDs and monitored their entropy generation rate (Ṡ) in accelerated tests. We compared the thermoelectrical results with the optical light emission evolution during degradation.
Angel Cuadras +2 more
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Robust heart rate variability analysis by generalized entropy minimization
Computational Statistics & Data Analysis, 2015zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Davide La Vecchia +2 more
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The Measurement and Prediction of Boundary Layer Entropy Generation Rate
Fluids Engineering, 2003In this paper hot wire measurements of the boundary layer velocity profiles at discrete locations along the suction surface of a turbine blade profile are presented. The measured aerodynamic data is transformed into thermodynamic data by way of the entropy function for the investigated Reynolds numbers of 76,000, 120,000 and 185,000 based on inlet ...
E. J. Walsh, M. R. D. Davies
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A general rate-distortion converse bound for entropy-constrained scalar quantization
2016 IEEE International Symposium on Information Theory (ISIT), 2016We derive a lower bound on the smallest output entropy that can be achieved via scalar quantization of a source with given expected quadratic distortion. As the allowed distortion tends to zero, the bound converges to the output entropy achieved by a uniform quantizer, thereby recovering the result by Gish and Pierce that uniform quantizers are ...
Tobias Koch 0001, Gonzalo Vazquez-Vilar
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Arabian Journal for Science and Engineering, 2020
In this work, a comparison is made for the behavior of the total entropy generation and the total temheat destruction during a transient heat conduction process. A slab undergoing a 1D heat conduction is used as an example to illustrate the transient behavior of both entropy generation and temheat destruction rates.
Khaled H. M. Al-Hamed, Ahmet Z. Sahin
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In this work, a comparison is made for the behavior of the total entropy generation and the total temheat destruction during a transient heat conduction process. A slab undergoing a 1D heat conduction is used as an example to illustrate the transient behavior of both entropy generation and temheat destruction rates.
Khaled H. M. Al-Hamed, Ahmet Z. Sahin
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Flow-Induced Endothelial Surface Reorganization and Minimization of Entropy Generation Rate
Journal of Biomechanical Engineering, 2004Effects of hydrodynamic shear on the shape of the endothelial surface are examined based on evaluations of the rate of entropy generation at the cell surface. A linear solution of the flow over a sinusoidally varying endothelial surface is used to evaluate the entropy generation rate on the cell surface for which measured cell dimensions are available.
Haidong, Liu, Uichiro, Narusawa
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On the Assessment of Mechanical Degradation of Grease Using Entropy Generation Rate
Tribology Letters, 2019A methodology for continuous monitoring of grease degradation subjected to mechanical shearing is proposed. It is hypothesized that the mechanical degradation of grease is akin to the running-in process in a tribo-pair with both transient and steady-state regimes.
K. P. Lijesh, M. M. Khonsari
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