Evaluation of two sample preparation methods for the determination of cadmium, nickel and lead in natural foods by Graphite Furnace Atomic Absorption Spectrophotometry by David Romero-Estévez, Gabriela S. Yánez-Jácome, Karina Simbaña-Farinango, Pamela Y Vélez-Terreros, Hugo Navarrete

“…This situation calls for the development of locally-applicable analytical methods for the determination of heavy metal concentrations in common vegetal and animal food products. …”
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Effect of seedling size on post-planting growth and survival of five Mexican Pinus species and their hybrids by José Alberto Ponce-Figueroa, Pablo Antúnez, José Ciro Hernández-Díaz, José Ángel Prieto-Ruíz, Artemio Carrillo-Parra, Pablito Marcelo López-Serrano, Christian Wehenkel

“…Therefore, the aim was to evaluate the influence of initial morphological parameters of 2,007 nursery seedlings of these species and their hybrids on their growth and survival 44 months after planting in the Sierra Madre Occidental, Mexico. Methods Spearman’s coefficient (rs) and the unbiased conditional pseudo coefficient of determination (R2c) between each specific predictor and each response variable and their 95% confidence interval (CI95%) were determined using Random Forest, generalized linear model, and bootstrapping. …”
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Regression Analysis in Development of Method for Isolation and Quantitative Determination of Water-soluble Polysaccharides from Sunflower Roots of One-year-old by N. A. Dyakova

“…The adequacy of the model was confirmed by testing hypotheses against Pearson's χ2 criterion. The correlation coefficient derived from the values of the regression coefficient and the mean square deviation was used in determining the tightness of the overall relationship between the source and the obtained data. …”
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Monitoring of Energy Efficiency of District Heating System Facilities: Methodology for Determining the Energy Baseline by Davydenko L.V., Davydenko N.V., Davydenko V.A., Sprake D.

“…The selection of better structures of the mathematical model was realized based on the criteria for its appropriate-ness (regularity, unbiasedness criterion, Schwartz, determination coefficient) and accuracy of the forecast using the morphological criterion. …”
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Dual crop coefficient of common bean in Tangará da Serra, Mato Grosso by William Fenner, Rivanildo Dallacort, Paulo S. L. de Freitas, Cleonir A. Faria Júnior, Marco A. C. de Carvalho, Guilherme Bariviera

“…The study used the FAO-56 dual kc method, dividing the kc into soil evaporation coefficient (ke), determined in microlysimeters, and basal crop coefficient (kcb), determined in weighing lysimeters. …”
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A Method for Determining Intrinsic Mode Function Number in Variational Mode Decomposition and Its Application to Bearing Vibration Signal Processing by Shoujun Wu, Fuzhou Feng, Junzhen Zhu, Chunzhi Wu, Guang Zhang

“…A method called center frequency statistical analysis (CFSA) is proposed in this paper to determine K value. …”
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A Stability-Indicating HPLC-DAD Method for Determination of Ferulic Acid into Microparticles: Development, Validation, Forced Degradation, and Encapsulation Efficiency by Jessica Mendes Nadal, Maria da Graça Toledo, Yasmine Mendes Pupo, Josiane Padilha de Paula, Paulo Vitor Farago, Sandra Maria Warumby Zanin

“…A simple stability-indicating HPLC-DAD method was validated for the determination of ferulic acid (FA) in polymeric microparticles. …”
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Implementation and Validation of an Analytical Method for Lincomycin Determination in Feathers and Edible Tissues of Broiler Chickens by Liquid Chromatography Tandem Mass Spectrome... by Aldo Maddaleno, Ekaterina Pokrant, Francisca Yanten, Betty San Martin, Javiera Cornejo

“…The calibration curves showed a coefficient of determination (r2) greater than 0.99 for all matrices, while recovery levels ranged between 98% and 101%. …”
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Research lift coefficient on the distance between the revolving cylinders a turbulent stream by Н.К. Танашева, А.Н. Дюсембаева, Н.Н. Шуюшбаева

“…The aerodynamic characteristics of the cylinders with diameters 10 cm in diameter, that is the rotary motion, is determined by the maximum value with the coefficient of lifting force and the frontal impedance coefficient. …”
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Permeability of Concrete and Correlation with Microstructure Parameters Determined by 1H NMR by Yurong Zhang, Shengxuan Xu, Zhaofeng Fang, Junzhi Zhang, Chaojun Mao

“…Water and gas permeability coefficients of concrete with different water-binder (w/b) ratios and admixtures were measured by a self-designed test device based on the steady-state flow method for liquid and the method of differential pressure in stability for gas, respectively. …”
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Analysis of influence of the item total scores on the levels of ability of respondents in the dichotomous Rasch model based on the weighted maximum likelihood method by E. B. Belov, M. V. Alekseev, N. P. Kitaev, A. I. Kuchumov

“…For items, we calculate the item total scores that determine their items difficulties. The weighting coefficients of the used WML depend on the item total scores and on the coefficient of influence K. …”
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Extraction and Determination of Amygdaline in Iraqi Plant Seeds Using the Combined Simple Extraction Procedure and High-Performance Liquid Chromatography by Baghdad Science Journal

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Method of estimation of PM10 fine particle concentration during operation of centrifugal friction rollers by Safronov E.V., Nosko A.L., Sharifullin I.A., Guskova A.S.

“…The coefficient of environmental friendliness of the design of the brake roller of the friction type has been introduced, which is one of the factors determining the maximum number of braking, and takes values from 0 to 1.0 for various designs of the friction roller — closed type, ventilated and open type. …”
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Determination of current-voltage characteristic nonlinearity of an surveyed object by a nonlinear radar by V. M. Chertkov, V. K. Zheleznjak

“…Theoretical substantiation of the nonlinearities types recognizing method of radioelectronic devices is given. Calculation results of the second and third order degree coefficients of polynomial approximating the current-voltage characteristic of a radio electronic means are presented.…”
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Exploring the Impact of State of Charge and Aging on the Entropy Coefficient of Silicon–Carbon Anodes by Kevin Böhm, Simon Zintel, Philipp Ganninger, Jonas Jäger, Torsten Markus, David Henriques

“…Since the reversible heat presents an important contribution to the overall heat generation during cycling, the entropy coefficient is the main value that needs to be determined. …”
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Landslide Susceptibility Evaluation Based on Empowerment Information Quantity Model of Game Theory by CUI Chengtao, LI Limin, FU Zhentao, REN Ruibin, WANG Lianxia, FENG Qingqing

“…In the process of employing information quantity models for landslide susceptibility zoning,given that the information quantity of influencing factors is directly added or multiplied by a single weight,without considering the main and objective weight of the factor,this paper proposes an evaluation method based on the empowerment information quantity model of game theory.First,the analytic hierarchy process (AHP) is adopted to calculate the subjective weight,the objective weight is determined by the coefficient of variation method,and then the game theory principle is utilized to optimize the main and objective weight to get the combination weight.Meanwhile,the information layer of each evaluation factor is weighted and summed based on the combination weight,and the evaluation results are divided into five categories by the natural intermittent point method.Finally,by taking Shanyang County of Shaanxi Province as the research area,the proposed model is compared with the information quantity model of single weight in landslide-susceptibility zoning maps,zoning point density,and ROC curves respectively.The results show that the accuracy and reliability of the proposed method outperform traditional weighted information measurement methods.…”
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Modelling height to crown base using non-parametric methods for mixed forests in China by Zeyu Zhou, Huiru Zhang, Ram P. Sharma, Xiaohong Zhang, Linyan Feng, Manyi Du, Lianjin Zhang, Huanying Feng, Xuefan Hu, Yang Yu

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Effectiveness of Using a Constant Coefficient in Combining Forecasts to Improve Forecasting Accuracy by A. A. Surkov

“…The purpose of the study is to determine the advantages and disadvantages of using a constant coefficient when combining forecasts based on available practical and theoretical data, as well as to form a unified approach to this issue. …”
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PSO-FDM (Particle Swarm Optimization-Finite Difference Method)-Based Simulation Model of Temperature and Velocity of Full-Scale Continuous Annealing Furnace by Yang Liu, Qiang Guo, Tieheng Yuan, Yingrui Han, Chao Liu, Wenquan Sun

“…To improve the prediction accuracy for different strip sizes, the PSO optimization algorithm was employed to determine the optimal heat transfer coefficient for each strip size. …”
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Simultaneous determination of moisture, 1,2-propanediol, glycerol and menthol in tobacco products using GC-TCD&FID in parallel method by Yaping Ma, Qinlin Xiao, Li Li, Juan Yang, Jing Wen, Yuyang Deng, Jia Guo, Xixiang Zhang, Wu Wen, Yi Shen

“…However, accurately measuring these components simultaneously remains a challenge. In this study, a method applying GC-TCD&FID method for the simultaneous determination of moisture, 1,2-propanediol, glycerol and menthol was developed. …”
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