Comparative analysis of machine learning models for predicting water quality index in Dhaka’s rivers of Bangladesh by Mosaraf Hosan Nishat, Md. Habibur Rahman Bejoy Khan, Tahmeed Ahmed, Syed Nahin Hossain, Amimul Ahsan, M. M. El-Sergany, Md. Shafiquzzaman, Monzur Alam Imteaz, Mohammad T. Alresheedi

“…The ANN model demonstrated superior predictive capability, achieving a Root Mean Squared Error (RMSE) of 2.34, a Mean Absolute Error (MAE) of 1.24, a Nash–Sutcliffe Efficiency (NSE) of 0.97, and a Coefficient of Determination (R2) of 0.97. …”
Get full text

Calorimetric stand for research of processes in the refrigeration unit by Yu. V. Kudrov, L. V. Sumzina, A. V. Maksimov, S. L. Filimonov

“…The aim of the work is to develop a calorimetric stand that allows simulating the operation of an energy-efficient two-evaporator refrigeration unit of a household refrigerator or freezer.Method. …”
Get full text

The study of photovoltaic and electrotransport properties of organic solar cells based on a mixture of PTB7-TH thiophene and PC70BM fullerene by А. Nurmakhanova, B. Ilyassov, A. Alekseev, A. Yedrissov, N. Ibrayev

“…For the first time, estimates of the variation of the hole mobility in PTB7 were obtained in the framework of a semiempirical model. The method of secondary ion mass spectrometry (SIMS) was used to determine the distribution of the donor and acceptor in the PTB7:PC71BM:DIO film. …”
Get full text

Quantum Private Comparison Based on Four-Particle Cluster State by Min Hou, Yue Wu

“…By employing this method and facilitating the distributed transmission of the quantum sequence, our protocol achieves a qubit efficiency of 50%. …”
Get full text

Study on Purge Strategy of Hydrogen Supply System with Dual Ejectors for Fuel Cells by Yueming Liang, Changqing Du

“…The exhaust purge on the anode side is a critical step in the operation of fuel cell systems, and optimizing the exhaust interval time is essential for enhancing stack efficiency and hydrogen utilization. This paper proposed a method to determine the purge strategy of hydrogen supply system based on theoretical and simulation analysis. …”
Get full text

Machine learning approaches for predicting the structural number of flexible pavements based on subgrade soil properties by Asadullah Ziar

“…Gradient boosting achieved the highest accuracy with a determination coefficient of 0.917. Moisture content was identified as the most significant predictor in most models. …”
Get full text

The Effectiveness of No­Till Sowing and Minimal Tillage in the Cultivation of Corn for Grain by V. F. Fedorenko, D. A. Petukhov, S. A. Sviridova, Yu. A. Yuzenko, A. N. Nazarov

“…The volumes of technological materials used were determined. A systematic analysis of the economic efficiency sources was carried out at two levels: machine and tractor fleet, technology in general.Conclusions It was determined that compared to the traditional technology, Mini-till ensures a 49-percent decrease in the labor intensity of mechanized operations, though results in a 1-percent increase in fuel consumption and a 69-percent rise in unit operating costs, which is, though, offset by a 3-ton-per-hectare, or a 43-percent, increase in the productivity of corn for grain.…”
Get full text

Synthesis and Research of Alumina Ceramics Properties by Evgeniy I. Frolov, Polina V. Notina, Sergey V. Zvonarev, Evgeniya A. Il'ina, Vyacheslav Yu. Churkin

“…The article describes in detail alumina powder synthesis by different methods at varying parameters. The technique of obtaining ceramics and the research of the optical properties for determining the materials with the maximum luminescence efficiency is presented. …”
Get full text

Development of the Methodology for Assessing the Level of Innovative Potential of an Industrial Enterprise by M. V. Apanasevich

“…Unlike the existing ones, the new methodology proposed by the author allows to take into account different degrees of influence of structural indicators on the resulting one due to the presence of weighting coefficients; to minimize the subjectivity factor when scoring; to conduct a comprehensive analysis of the company’s condition through a comprehensive assessment of indicators, the structural components of which have different measurement values; to determine the prospects based on the dynamics of indicators and to form strategies for the company’s development.…”
Get full text

Special aspects of machining of internal threads by measure tool by A. A. Neshta, D. V. Krivoruchko

“…The real cross-section profiles of the thread were determined by graphical method. Analytical method derived mathematical expressions that bind the pitch and thread shape with the tool dimensions and machining equipment settings. …”
Get full text

Effect of mass of parts on removal rate under vibroabrasive machining by V. I. Butenko, A. V. Stel'makh

Get full text

System of automated monitoring and forecasting of the remaining resource of pipeline transport by S. O. Gaponenko, А. E. Kondratiev, M. V.. Kalinina, R. V. Akhmetova

Get full text

Evaluation of Model and Process Optimization for the Treatment of Drilling Wastewater Using Electrocoagulation by Muhammed Kamil Öden

“…In this study, the treatability of wastewater generated during drilling operations in a basin, where an underground gas storage area was created, was investigated using an electrocoagulation (EC) process, using different electrode pairs. The removal efficiencies of the pollution parameters were determined using the response surface method. …”
Get full text

Multi-scale simulation of three-dimensional thin-film lubrication by Zuobing Wu

“…In the application of the multi-scale method to investigate the tribological properties of the multi-layer molecular thin-film lubrication, it is determined that the systematic static friction coefficient monotonously decreases as the molecular layer thickness in the fluid film increases. …”
Get full text

A novel computational analysis of boundary-driven two-dimensional heat flow with internal heat generation by Muhammad Abid, Madiha Bibi, Nasir Yasin, Muhammad Shahid

“…Accurate numerical solution of parabolic and elliptic partial differential equations governing two-dimensional heat transfer is critical for engineering simulations but computationally challenging.This work employs key numerical techniques finite differences, conjugate gradients, and Crank-Nicolson time stepping to solve the heat diffusion equation and analyze method performance.The Poisson equation is discretized using second-order central finite differences and solved with the conjugate gradient approach to determine the steady state solution. …”
Get full text

Development of criteria for interpretation and quality assessment of the results of susceptibility testing of Enterobacterales and Pseudomonas aeruginosa to cefepime-sulbactam by Edelstein M.V., Ivanchik N.V., Kozlov R.S.

“…Determination of cefepime and cefepime-sulbactam MICs was performed by broth microdilution method in Mueller-Hinton II broth in accordance with ISO 20776 1:2019. …”
Get full text

Quantitative Calculation of Aquifer Water Quantity Using TEM Data by Lanying Huang, Shengdong Liu, Bo Wang, Fubao Zhou

“…After an appropriate apparent resistivity value is set, the spatial distribution range of an aquifer can be determined. Then, with water-filling coefficient of the aquifer, its water quantity can be estimated. …”
Get full text

Study on the construction of a Chinese cardiovascular physician competency model by Shilin Sun, Min Liu, Han Liu, Wenyuan He, Ying Zheng, Boyang Zheng, Weiwei Quan

“…Weightings for primary and secondary indicators were calculated using the Analytic Hierarchy Process and percentage weighting methods. The final cardiovascular physician competency model, tailored to the Chinese context, was determined. …”
Get full text

Establishment of a Discrete-Element Model and Verification of a Seeder Bench Experiment for Sesbania Seeds by Shuwei Chen, Yanzhou Li, Bowen Wei, Meiqi Shi, Xufeng Zou, Xin Huang

Get full text

Dynamics of correlation relationship changes in new winter wheat varieties (<em>Triticum aestivum</em> L.) under the influence of environmental factors in the Southern Forest-Stepp... by М. М. Гаврилюк, П. Є. Каленич

“…Methods. Weight measuring was used to determine seed yield; the reliability of the experiment results was identified by statistical evaluation, analysis of variance and regression procedure. …”
Get full text