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991.
Pham Y. Yu Y. K. Manh T. V. Gamzatov A. Tartakovsky D. M. Yu S.-C. Yang D.-S. Kim D.-H. 《Physics of the Solid State》2020,62(5):845-850
Physics of the Solid State - Structural and magnetic properties of Sr-doped Pr0.7Ba0.3MnO3 polycrystallines prepared by solid state reaction are presented. Samples were in monoclinic structure... 相似文献
992.
Alekseev S. V. Andreev Yu. M. Losev V. F. Lubenko D. M. 《Russian Physics Journal》2020,62(11):2151-2155
Russian Physics Journal - This paper presents the results of research on parameters of the THL-100 hybrid laser system of the visible spectrum with a view to modernizing it, in order to achieve the... 相似文献
993.
M. Araceli Snchez-Snchez Cristina Conde Beatriz Gmez-Aylln David Ortega-DelCampo Aristeidis Tsitiridis Daniel Palacios-Alonso Enrique Cabello 《Entropy (Basel, Switzerland)》2020,22(11)
Automated border control systems are the first critical infrastructure point when crossing a border country. Crossing border lines for unauthorized passengers is a high security risk to any country. This paper presents a multispectral analysis of presentation attack detection for facial biometrics using the learned features from a convolutional neural network. Three sensors are considered to design and develop a new database that is composed of visible (VIS), near-infrared (NIR), and thermal images. Most studies are based on laboratory or ideal conditions-controlled environments. However, in a real scenario, a subject’s situation is completely modified due to diverse physiological conditions, such as stress, temperature changes, sweating, and increased blood pressure. For this reason, the added value of this study is that this database was acquired in situ. The attacks considered were printed, masked, and displayed images. In addition, five classifiers were used to detect the presentation attack. Note that thermal sensors provide better performance than other solutions. The results present better outputs when all sensors are used together, regardless of whether classifier or feature-level fusion is considered. Finally, classifiers such as KNN or SVM show high performance and low computational level. 相似文献
994.
Kharaneko A. O. Pekhtereva T. M. Kharaneko O. I. 《Russian Journal of Organic Chemistry》2020,56(4):654-661
Russian Journal of Organic Chemistry - A modified procedure has been proposed for the synthesis of 2,7-diphenyl-5,8-dihydro-4H-pyrazolo[5,1-d][1,2,5]triazepin-4-one, and the possibility of... 相似文献
995.
Bitar D. Ture Savadkoohi A. Lamarque C.-H. Gourdon E. Collet M. 《Nonlinear dynamics》2020,99(2):1433-1450
Nonlinear Dynamics - The present research work aims to design a passive vibration control based on nonlinear energy pumping. An extended asymptotic approach is introduced based on the invariant... 相似文献
996.
International Applied Mechanics - A design of a spatial seven-link mechanism with rotational kinematic pairs of a part processing machine without redundant constraints is presented. The principle... 相似文献
997.
Egorova N. I. Konyushenko I. O. Nemets V. M. Peganov S. A. 《Optics and Spectroscopy》2020,128(4):553-561
Optics and Spectroscopy - The features and possibilities of absorption molecular spectroscopy of complex mixtures of organic compounds have been studied by the example of fractions of thermal... 相似文献
998.
Notbohm J. Napiwocki B. N. de Lange W. J. Stempien A. Saraswathibhatla A. Craven R. J. Salick M. R. Ralphe J. C. Crone W. C. 《Experimental Mechanics》2020,60(4):571-571
Experimental Mechanics - The authors would like to correct the sentence “The mass ratio……” in the subsection on Engineered Substrate System in MATERIALS AND METHODS, to read: 相似文献
999.
Neklyudov V. V. Boos G. A. Shulaeva M. M. Chmutova G. A. Amirov R. R. 《Russian Chemical Bulletin》2020,69(10):1907-1915
Russian Chemical Bulletin - The solution state of a new antituberculosis drug 1,6-bis(hydrazidomethylsulflnyl)hexane (L) and its complexation with copper(II) were investigated by spectrophotometry,... 相似文献
1000.
I. A. Opeida R. B. Sheparovych Yu. M. Hrynda O. Yu. Khavunko M. O. Kompanets A. N. Shendryk 《国际化学动力学杂志》2019,51(9):679-688
A kinetic study of the initiated oxidation of benzyl alcohol and cumene by molecular oxygen was performed. The oxidation rate was more enhanced with N-hydroxyphthalimide (NHPI) in the case of cumene than that of benzyl alcohol. HOOH inhibits cumene oxidation and does not affect the rate of oxidation of benzyl alcohol. It was shown that termination chain reactions of phthalimid-N-oxyl radicals (PINO•) does not occur with RОО• and proceeds with HOO•. A kinetic scheme of the process and an equation describing the kinetics of oxidation of benzyl alcohol in the presence of NHPI are proposed. Using the PM7 method, the thermodynamic characteristics of elementary steps of oxidation explaining the obtained results were calculated. 相似文献