Results 191 to 200 of about 2,699,106 (249)

Optimization of Wind Turbine Spindle Bearing Gel-like Grease Performance at Extreme Temperatures. [PDF]

Gels
Tian Z, Zhang Y, Peng H, Peng B, Meng Z.
europepmc   +1 more source

Risk-taking responses to crash experience: Evidence from China. [PDF]

PLoS One
Fang Z, Xu H, Mu Y.
europepmc   +1 more source

Melanin-Inspired Biomimetic Strategy for Preserving Adhesion of Lubricants via Thiol-Quinone Addition. [PDF]

Biomimetics (Basel)
Song X, Mei C, Wu Y, He D, Zhu J, Chen Q, Guo J, Zhao Z, Xie T, Liu W.   +9 more
europepmc   +1 more source

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Comment on ‘Coefficient of performance of Stirling refrigerators’

European Journal of Physics, 2020
Abstract This comment examines an article that develops a counterclockwise reversible Stirling cycle whose coefficient of performance equals that of a Carnot refrigerator. Unfortunately, among other issues, the proposed cycle is never in thermodynamic equilibrium and thus cannot match an idealized reversible Carnot.
Robert H Dickerson, Jochen Mottmann
openaire   +1 more source

On the Performance of a Test for Coefficient of Variation

Calcutta Statistical Association Bulletin, 1992
Approximate standard errors (s.e) of sample coefficient of variation (c.v.) are available in the literature (Kendall and Stuart, 1977; Serfting 1980). Using these s.e.'s a large sample test can be constructed to test for the specified value of population c.v. The test can also be justified on the principles of Wald test.
Aruna Rao, K., Vidya, R.
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Linear irreversible thermodynamics and coefficient of performance

Physical Review E, 2006
Following the recent proposal by Van den Broeck for a heat engine [Phys. Rev. Lett. 95, 190602 (2005)], we analyze the coefficient of performance of a refrigerator in two working regimes using the tools of linear irreversible thermodynamics. In particular, one of the analyzed regimes gives a coefficient of performance which could be considered as the ...
B Jiménez, de Cisneros, L A, Arias-Hernández, A Calvo, Hernández   +2 more
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Learning performance of coefficient-based regularized ranking

Neurocomputing, 2014
The regularized kernel methods for ranking problem have attracted increasing attention recently, which are usually based on the regularization scheme in a reproducing kernel Hilbert space. In this paper, we go beyond this framework by investigating the generalization ability of ranking with coefficient-based regularization.
Hong Chen 0004, Zhibin Pan, Luoqing Li
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Improved EASI coefficients: Their derivation, values, and performance

Journal of Electrocardiology, 2002
The EASI lead system, which is based on the dipole hypothesis of vectorcardiography, offers the possibility of deriving the standard 12-lead electrocardiogram (ECG) and other desired leads from ECGs recorded at only 4 sites; it uses the Frank E, A, and I electrode locations, a fourth electrode location (S) at the manubrium, and a reference electrode ...
Dirk Q, Feild, Charles L, Feldman, B Milan, Horácek   +2 more
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