A Study on the Determination Method of the Gear Reduction Ratio for Electric Trains Considering Drive Shaft Relative Damage and Motor Efficiency by Soonhyun Kwon, Jongbok Jeong, Dongkyeom Kim, Wonsik Lim

“…This study presents a method for determining the optimal gear ratio in electric trains by examining the effects of motor efficiency, wheel wear, and relative damage to the input and output shafts of the reduction gear. …”
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A Framework to Estimate Local Atmospheric Densities With Reduced Drag‐Coefficient Biases by Vishal Ray, Daniel J. Scheeres, Suood Alnaqbi, W. Kent Tobiska, Siamak G. Hesar

“…But densities estimated using satellite tracking data are always uncertain up to the drag‐coefficient assumed in the inversion method. This work develops a new framework to simultaneously estimate the density and drag‐coefficient for satellites with a time‐varying attitude. …”
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Use of S. Wright’s path coefficient method for statistical analysis of interrelated traits in rice by D. P. Palamarchuk, M. R. Kozachenko, S. I. Sviatchenko

“…The plants were analyzed for the following traits: plant productivity (grain weight), panicle weight, grain weight from side stems, productive tillering capacity, grain number per panicle, spikelet number per panicle, 1000-grain weight, grain weight per panicle, plant height, panicle length and density, empty spikelet number per panicle, and incidence of blind seed disease. Pair correlation coefficients were determined by B.A. Dospekhov’s method; path analysis, by S. …”
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Active radial clearance design method based on customized linear expansion coefficient by ZHANG Shaoping, PANG Yanlong, CHEN Yanyan

“…By utilizing the characteristic that the radial deformation of the compressor casing is mainly determined by thermal loads, the adjustable and positive design of the casing′s radial deformation is achieved by customizing the linear expansion coefficient of the casing. …”
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Toeplitz and Hankel determinants of logarithmic coefficients for r-valent q-starlike and r-valent q-convex functions by Pishtiwan Othman Sabir, Awara Ahmed Ali

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Active impacts on warm fogs and instrumental determination of their efficiency by K. M. Kalov, R. K. Kalov

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An Improved Fitting Method for Predicting the Zernike Coefficient–Wavelength Curves by Fang Wang, Qiyuan Zhang, Haoyu Wang, Dayong Zhu, Huaikang Zhu, Wenxin Jia, Sen Han

“…Two methods, i.e., solving and fitting, can be used to determine the coefficients of the Conrady formula. …”
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THE METHOD OF CALCULATION OF COEFFICIENTS OF THE PHASE ABERRATIONS OF AXIALLY ASYMMETRIC DUAL REFLECTOR ANTENNAS by B. N. Laskin, E. A. Bolelov

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Using asymptotics for efficient stability determination in epidemiological models by Glenn Ledder

“…For systems with three components, the usual method of finding the characteristic polynomial as $ \det(J-\lambda I) $ and applying the Routh-Hurwitz conditions is reasonably efficient. …”
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Comparison modeling of the number population who have been vaccined in East Java using the biresponse Fourier series estimator method with the trend function by Ira Yudistira, Naylur Rohman, M Fariz Fadillah Mardianto, Kuzairi

“…Based on this description, the researcher aims to compare the modeling of the population that has been vaccinated with the first and second doses using the Fourier series bi-response method with a trend function. The criteria for the goodness of the model in this study used small GCV and MSE values and a high coefficient of determination. …”
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Determination of the Pressure Coefficient of Optical Attenuation in Different Layers of In-Vivo Human Skins With Optical Coherence Tomography by Ya Su, X. Steve Yao, Changjiang Wei, Yimin Wang, Hongjie Wang, Zhihong Li

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PRINCIPLES OF DETERMINATION OF VALUE IN USE FOR MEAT AND MEAT PRODUCTS BASED ON QUALITY INDICATORS — THE COEFFICIENTS OF CONSUMER PROPERTIES by N. F. Neburchilova, I. V. Petrunina

“…The utility of products is determined by a complex of properties that reflect their value in use. …”
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Effective electro-optical coefficient determination of low finesse periodically poled lithium niobate waveguide resonator by Nasrin Moeini, Rahman Nouroozi

“…This paper proposes a novel, compatible method to determine the effective electro-optic coefficient of a Ti:PPLN channel waveguide. …”
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Universal method for contact fatigue determination by Igor Stepankin, Abdrakhman Naizabekov, Evgeniy Pozdnyakov, Dmitry Kuis, Sergey Lezhnev, Yevgeniy Panin

“…The authors have developed a universal method for determining the contact fatigue of materials, providing opportunities for resource-efficient design of parts operating under the action of pulsating contact stresses. • Design and operating principle of the patented testing device. • Universal methodology for determining the contact fatigue of materials. • Our novel test method demonstrated a convergence of finite element modeling and real test in terms of crack formation in maximum stress zones.…”
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ROBUST NUMERICAL METHODS FOR SOLVING THE poorly determined taskS OF ELECTRODYNAMICS AND NONLINEAR DYNAMICS by A. A. Kuraev, T. L. Popkova, V. V. Matveenko

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Efficient Humanitarian Logistics: Multi-Commodity Location–Inventory Model Incorporating Demand Probability and Consumption Coefficients by Majid Mehrabi Delshad, Adel Pourghader Chobar, Peiman Ghasemi, Davoud Jafari

“…This study aims to investigate the inventory location in the humanitarian logistics response stage using a three-level logistics network to integrate location–allocation problems such as warehouse location and shelter allocation to each facility, and then determine the inventory level in each warehouse. <i>Methods</i>: In this research, the center and its distribution, as well as the reduction in service-level costs due to inventory deficit, have been considered to increase the level of shelter services. …”
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A Sensitive and Efficient Method for Determination of Capecitabine and Its Five Metabolites in Human Plasma Based on One-Step Liquid-Liquid Extraction by Zhipeng Wang, Xinxing Li, Yang Yang, Feng Zhang, Mingming Li, Wei Chen, Shouhong Gao, Wansheng Chen

“…Linear correlation coefficients were >0.99 for all regression curves. The intraday and interday accuracy and precision of the method were within ±15.0% and less than 15.0%, respectively. …”
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Development and application of an efficient, accurate, and environmentally friendly liquid chromatography–tandem mass spectrometry method for the determination of five Alternaria toxins in wheat by Huiyuan Lang, Zengwang Guo, Yu Wu, Li Li, Hongmei Liu, Lianzhou Jiang, Songxue Wang, Jin Ye

“…This study developed a rapid, efficient, and environmentally friendly method for the simultaneous determination of five types of Alternaria toxins in wheat using high-precision and stable isotope liquid chromatography tandem mass spectrometry. …”
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Influence of Transformation Coefficient of Refrigerating Machine on Exergetic Efficiency of Air Conditioning System of Operating Clean Rooms by Volodymyr Labay, Kyrylo Andreiko

“…The aim of the model is to make computer estimation of exergetic efficiency of existing air conditioning system depending on different factors which have influence on its work, in particular the coefficient of transformation (or energy efficiency rate, EER) of its refrigeration machine. …”
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Method of Determining the Sound Absorbing Coefficient of Materials within the Frequency Range of 5 000–50 000 Hz in a Test Chamber of a Volume of about 2 m3 by Witold MIKULSKI

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