Search alternatives:
coefficient » efficient (Expand Search)
Showing 7,221 - 7,240 results of 15,724 for search 'determined (coefficient OR efficiency) methods', query time: 0.28s Refine Results
  1. 7221

    Research on the vibration test load spectrum for bogie frame-mounted tractor motor based on on-track tests by LI Guoshun, GUO Lirong, CHEN Can, ZHANG Yichao, ZHANG Hongwei

    Published 2023-01-01
    “…The test load spectrum was then extended across the life-cycle running mileage; the maximum load amplitude under the life-cycle running mileage was inferred depending on the consistency in the characteristic parameters of the load spectrum, to confirm the life-cycle load spectrum. Referring to the method defined in FKM, the variable amplitude cycle coefficient was calculated, the calculation method of the equivalent constant amplitude load was determined for the corresponding variable amplitude cycle, and the constant amplitude load spectrum was constructed for the vibration load fatigue test of the frame-mounted traction motor. …”
    Get full text
    Article
  2. 7222

    Attention-based BiLSTM-XGBoost model for reliability assessment and lifetime prediction of digital microfluidic systems by Lifeng He, Qili Yang, Junxi Chen, Wenjing Liu, Zhijie Luo

    Published 2025-07-01
    “…The model achieved a mean absolute percentage error (MAPE) of 1.6464, Root mean squared error (RMSE) of 0.3667, mean absolute error (MAE) of 0.2557, and a coefficient of determination (R-squared) of 0.9949. …”
    Get full text
    Article
  3. 7223

    Multi-Fidelity Machine Learning for Identifying Thermal Insulation Integrity of Liquefied Natural Gas Storage Tanks by Wei Lin, Meitao Zou, Mingrui Zhao, Jiaqi Chang, Xiongyao Xie

    Published 2024-12-01
    “…Three machine learning algorithms—Multilayer Perceptron, Random Forest, and Extreme Gradient Boosting—were evaluated to determine the optimal implementation. This approach provides a reliable method for the real-time monitoring of thermal insulation integrity in liquefied natural gas storage tanks, contributing to improved industrial safety and operational efficiency.…”
    Get full text
    Article
  4. 7224

    An Improved Physics-Informed Neural Network Algorithm for Predicting the Phreatic Line of Seepage by Yunpeng Gao, Li Qian, Tianzhi Yao, Zuguo Mo, Jianhai Zhang, Ru Zhang, Enlong Liu, Yonghong Li

    Published 2023-01-01
    “…The measured data are converted into a quadratic regular term and added to the loss function as feature data to guide the update process for the weight and bias coefficient of each neuron in the neural network. A typical geotechnical problem concerning seepage phreatic line determination in a rectangular dam is analyzed to demonstrate the efficiency of the improved method. …”
    Get full text
    Article
  5. 7225

    Socio-Economic Factors of Population Reproduction in Russia and in the Context of Federal Districts by T. I. Gulyaeva, E. V. Takmakova, V. I. Savkin

    Published 2023-05-01
    “…In the course of the work, such statistical research methods as tabular and graphical methods, analysis of indexes of dynamics series were used.Results. …”
    Get full text
    Article
  6. 7226

    Forecasting Electricity Production in a Small Hydropower Plant (SHP) Using Artificial Intelligence (AI) by Dawid Maciejewski, Krzysztof Mudryk, Maciej Sporysz

    Published 2024-12-01
    “…Finally, after applying forecast quality measures of Mean Absolute Error (MAE), Mean Absolute Percentage Error (MAPE), and Coefficient of Determination (R<sup>2</sup>), the most effective model was indicated. …”
    Get full text
    Article
  7. 7227

    Removal of trihalomethanes from activated Napier grass-derived adsorbent using liquefied gas and chemical pretreatment by S. Sriboonnak, A. Wongrueng, P. Rakruam, S. Nitayavardhana, P. Sittisom, A. Siyasukh, P. Induvesa, B. Sawangjang, S. Takizawa

    Published 2025-04-01
    “…Besides, this work aimed at improvement of efficiency and decrease costs associated with the removal of trihalomethanes.METHODS: The application of chemical pretreatments with sodium hydroxide, phosphoric acid, and ferric nitrate resulted in the generation of an adsorbent obtained from Napier grass. …”
    Get full text
    Article
  8. 7228

    The Analysis of Driving Factors of Farm Land Equipment to Sprinkler Irrigation Systems (Case Study: the Villages of Ravansar Township) by Jafar Tavakoli, Davoud Jamini

    Published 2015-11-01
    “…The main research tool is a researcher-made questionnaire, whose validity, reliability and Cronbach's alpha coefficient were confirmed by university professors and relevant experts Wilcoxon test has been used to determine the effects of sprinkler irrigation systems on the farmers’ activities. …”
    Get full text
    Article
  9. 7229

    BUN‐to‐ALB ratio as an effective predictor of 30 day mortality in ADHF patients in eastern China by Xin Huang, Chao Wang, Shiming He, Guoan Jian, Kun Jiang, Zihao Lu, Guotai Sheng, Yang Zou, Guobo Xie

    Published 2025-08-01
    “…ROC curve analysis determined that the predictive efficiency of BAR for short‐term mortality in ADHF patients was ~84%, with an area under the ROC curve (AUC) of 0.84. …”
    Get full text
    Article
  10. 7230

    Immobilization of Oat Bran Polyphenols in Complex Coacervates of Whey Protein and Malthodextrin by Zyaitdinov Damir R., Ewteew Alexandr V., Bannikova Anna V.

    Published 2020-10-01
    “…After that, the mixes were treated by ultrasonication and 10% w/w of guar gum solution as double wall material. The encapsulation efficiency (EE) was determined as a ratio of encapsulated phenolic content to total phenolic content. …”
    Get full text
    Article
  11. 7231
  12. 7232

    Predicting Endpoint Temperature of Molten Steel in VD Furnace Refining Process Using Metallurgical Mechanism and Bayesian Optimization XGBoost by Ji XU, Zicheng XIN, Mo LAN, Wenhui LIN, Bo ZHANG, Qing LIU

    Published 2024-11-01
    “…If the endpoint temperature is too low, the molten steel must be reheated in the ladle furnace (LF), severely impacting production efficiency. Therefore, the refining endpoint temperature significantly influences the quality of molten steel, production efficiency, and continuous casting. …”
    Get full text
    Article
  13. 7233

    Parameter Sensitivity Analysis and Algorithm Improvement of Optimization Scheduling Model for Cascade Pumping Stations by LIU Xiaolian, LI Zhenrong, WANG Xue-ni, ZHAI Yu, ZHANG Lei-ke, GUO Weiwei, TIAN Yu

    Published 2024-01-01
    “…The proposed optimal scheduling method of cascade pumping stations based on TRUN could effectively improve the current operating efficiency of the system, and the efficiency of the optimization scheme calculated by TRUN was better than that obtained by RUN, TPSO, PSO, TGA and GA, which demonstrated that the improved algorithm could be applied to the scheduling decision-making of cascade pumping stations and had excellent solving performance. …”
    Get full text
    Article
  14. 7234

    Calibration and experiments of discrete element flexible model parameters for kiwifruit stalk by Zhi He, Xinting Ding, Wei Hao, Kai Li, Weixin Gong, Zixu Li, Yongjie Cui

    Published 2024-12-01
    “…First, physical experiments were conducted to determine the intrinsic and contact parameters of kiwifruit stalk. …”
    Get full text
    Article
  15. 7235

    Performance assessment of grid-forming converters frequency support during disturbances in active distribution networks by Souhil Drias, Abderrahmane Berkani, Mohamed Bey, Sarah Bouradi

    Published 2025-03-01
    “…To determine the gain of the controller, the Result adaptive PID controller is performed, and its performance is compared to the classical PID controller based on the trial/error method. …”
    Get full text
    Article
  16. 7236

    Measurement of tepotinib by UPLC‒MS/MS and its interaction with naringenin in rats by Zhe Chen, Chaojie Chen, Ya-nan Liu, Xinhao Xu, Shunbin Luo

    Published 2024-11-01
    “…Excellent linearity was shown in the range of 0.1–500 ng/mL, and the coefficient of correlation was > 0.99. Notably, the lower limit of quantification (LLOQ) for tepotinib was determined to be 0.1 ng/mL. …”
    Get full text
    Article
  17. 7237

    Validating the diagnostic accuracy of medical certification: a population-level comparison between verbal autopsy and Saudi medical records causes of death of deceased with type 2... by Faleh Alyazidi, Deler Shakely, Fawaz R. Alyazidi, Max Petzold, Laith Hussain-Alkhateeb

    Published 2024-12-01
    “…Background In contexts where certifying causes of death (COD) is inadequate – either in industrialized or non-industrialized countries – verbal autopsy (VA) serves as a practical method for determining probable COD, helping to address gaps in vital data. …”
    Get full text
    Article
  18. 7238

    TEACHERS' VOLITION, INSTRUCTION AND CORRECTION STRATEGIES FOR TEACHING STUDENTS' WITH BEHAVIOURAL PROBLEMS IN GENDER- SPECIFIC SECONDARY SCHOOLS IN ANAMBRA STATE- NIGERIA by Nkechi Uzochukwu OKEKE, Ngozi Elizabeth EZENWOSU, Adeline NNE ANYANWU

    Published 2024-07-01
    “…The reliability of the instrument was determined using Cronbach alpha method and an alpha coefficient of 0.78 was obtained. …”
    Get full text
    Article
  19. 7239

    Investigating the farmers' perception towards the creation and development of diversification components in economic activities: the case of rural areas of Baghlan Jadid district o... by Muhammad Asef Shaiq, Sayed Reza Hashemi, Said Ahmad Asim Hashemi

    Published 2024-12-01
    “…In this research, the sample size was determined using Cochran's formula of 363 people, which was done by multi-stage sampling method. …”
    Get full text
    Article
  20. 7240

    Identification of dynamics for machining systems by Yuri Petrakov, Oleksandr Okhrimenko, Maksim Sikailo

    Published 2024-12-01
    “…The paper proposes a method for identifying such dynamic parameters of the machining system, which include natural vibration frequencies, vibration damping coefficients, and stiffness of the replacement model of single-mass system in the direction of the machine-CNC coordinate axes. …”
    Get full text
    Article