Calculation of the Friction Coefficients of Flax Stems according to their Roughness Characteristics by V. G. Chernikov, R. A. Rostovtsev, R. A. Popov, V. Yu. Romanenko, A. A. Rostovtsev

“…Profile diagrams of flax stems parts of were processed with conventional methods.Results and discussion The authors have obtained the friction coefficients of the stems of different humidity as they moved along the steel surface. …”
Get full text

Investigation of the Effect of Restitution Coefficient on 3-Dimensional Rockfall Analyses by İbrahim Uykun, Mutluhan Akın, Ogün Ozan Varol

“…This study examines the effects of terrain restitution coefficients (Rn and Rt), which can be determined using various methods in rockfall modeling analyses, on factors such as runout paths, bounce heights, kinetic energy, and lateral dispersion. …”
Get full text

On a certain functional equation in the algebra of polynomials with complex coefficients by E. Muhamadiev

“…However, this procedure requires complicated coefficient transformations. In the present paper we suggest a direct method to evaluate the number of roots of a polynomial with complex coefficients in a disc, based on studying a certain equation in the algebra of polynomials. …”
Get full text

Definition of the Complex Refractive Index of an Etalon for Measuring the Reflection Coefficient by V.I. Shkaleto, G.I. Kopach, R.V. Zaitsev

“…The paper describes methods for determination of the complex refractive index of opaque objects by the measurement results of the reflection coefficients at two different angles of incidence. …”
Get full text

Analysis measurements of millet collision coefficient of restitution for mechanized seeding. by Yifei Li, Wenqi Zhou, Shujuan Yi, Tao Chen, Dongming Zhang, Song Wang

“…A combination of bench and simulation tests validated the test results, showing no significant differences and confirming the method's viability for determining COR. These findings offer a reference for optimizing the design of relevant components within the millet metering system.…”
Get full text

Microwave Radar Sensing of Sea Waves: An Effective Reflection Coefficient by Karaev Vladimir, Panfilova Mariya Andreevna, Titchenko Yu., Meshkov Evgeniy Mihaylovich, Kovaldov Dmitry, Xiuzhong Li, Yijun He

“…In this paper, we discussed a new method for calculating the effective reflection coefficient from the wave scatterometer SWIM data. …”
Get full text

REFRACTIVE INDEX DETERMINATION FOR A PLANE DIELECTRIC LAYER USING THE MEASUREMENTS OF TRANSMITTED BEAM INTENSITY by V. M. Serdyuk, J. A. Titovitsky

“…We have found the function of energy transmission coefficients for these polarizations, which does not depend on the layer thickness and is characterized bIt is shown that this function provides the opportunity to determine the layer refractive index uniquely. …”
Get full text

THE METHODS OF EXTRAPOLATING A VECTOR RANDOM PROCESS BASED ON THE CANONICAL DECOMPOSITION USING THE METHOD OF INTEGRAL ASSESSMENTS FOR A CERTAIN INTERVAL WHEN DETERMINING OF RANDOM... by Rustam K. Murasov

“…The article offers method of extrapolation of vector stochastic process based on the canonical decomposition using the integral method at a certain interval when determining the random coefficients that allows you to quickly change the basic realization of the random process to improve the accuracy of the forecast.…”
Get full text

Method of Testing of Sound Absorption Properties of Materials Intended for Ultrasonic Noise Protection by Dariusz PLEBAN

“…However, standardized methods enable determination of absorption coefficients of materials in the frequency range up to 4 kHz. …”
Get full text

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.…”
Get full text

Performance of explicit approximations of the coefficient of head loss for pressurized conduits by Bruna D. Pimenta, Adroaldo D. Robaina, Marcia X. Peiter, Wellington Mezzomo, Jardel H. Kirchner, Luis H. B. Ben

“…However, for this determination, it is necessary to use numerical methods or the Moody diagram. …”
Get full text

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. …”
Get full text

Enhancement Optical Characterized of Tin Oxide in Polymer Polyvinyl alcohol Colloid Prepared by Laser Ablation Method by Nadheer Jassim Mohammed, Zahraa Sabah Rasheed

Get full text

Estimation of S-parameters and dielectric permittivity of quartz ceramics samples in millimeter waveband by N. A. Pevneva, D. A. Kondrashov, A. L. Gurskii, A. V. Gusinsky

“…A modified Nicholson – Ross – Weir method was used to determine complex parameters and dielectric permittivity of ceramic materials in the range 78.33–118.1 GHz. …”
Get full text

Multi-route method of work organization for transport vehicles by Sergei A. Azemsha

Get full text

New Fluorometric Method for the Determination of Ketotifen Fumarate Using Continuous Flow Injection Analysis via ISNAG-fluorimeter by Turkie et al.

“…A newly developed analytical method was conducted for the determination of Ketotifen fumarate (KTF) in pharmaceuticals drugs via quenching of continuous fluorescence of 9(10H)-Acridone (ACD). …”
Get full text

Development and Validation of RP-HPLC Method for the Simultaneous Determination of Rabeprazole Sodium and Itopride Hydrochloride in Solid Dosage Form by Rajesh Sharma, Ganesh Prasad Mishra, Subhash Chandra Chaturvedi

“…Linearity was obtained in the concentration range of 2 to 16 μg/mL of rabeprazole sodium and 5 to 55 μg/mL of itopride hydrochloride with a correlation coefficient of 0.9992 and 0.9996 respectively. The results of the analysis were validated statistically and recovery studies confirmed the accuracy of the proposed method.…”
Get full text

Modeling Productive Land Determination Using Entropy-Mabac Method Based on Multicriteria Data in Central Java Province by Mutiatun Nafisah, Saifur Rohman Cholil

“…Validation using the Spearman Rank test resulted in a correlation coefficient of 0.82, indicating strong agreement between the method results and historical data. …”
Get full text

Optimization of Vortex Tube Design Parameters Using the Taguchi Method by Himmet Erdi Tanürün, Adem Acır

Get full text

A Fast-Response Method for Determining the Amplitude of a Signal in Microprocessor Automation and Control Systems with Frequency Fluctuations by Yu. V. Rumiantsev, F. A. Romaniuk, V. Yu. Rumiantsev

“…The proposed high-response method for determining the amplitude during frequency fluctuations is focused on using as initial information samples of instantaneous values of the cosine orthogonal component of the signal, which are formed using an appropriate digital Fourier filter. …”
Get full text