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Showing 1 - 20 results of 1,541 for search 'variable (friction OR function) (efficient. OR efficiency.)', query time: 0.21s Refine Results
  1. 1

    Interdecadal Variability of Summer Precipitation Efficiency in East Asia by Jian Wang, Shu Gui, Anqi Ma, Ruowen Yang, Qi Zhang

    Published 2019-01-01
    “…Two major modes of summertime precipitation efficiency are identified using Empirical Orthogonal Function (EOF) analysis. …”
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  2. 2

    A review on frictional torque reduction approaches for energy efficient roller bearings by Mohammad Lutfar Rahaman, Esteban Bernal, Maksym Spiryagin, Colin Cole, Roger Buckley, Qing Wu

    Published 2025-05-01
    “…This review examines various strategies to enhance the energy efficiency of roller bearings by reducing frictional torques from multiple sources: roller rolling resistance, sliding friction at roller ends, lubricant agitation, interactions with bearing cages, and frictional losses in seals. …”
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    Performance Analysis of a Reciprocating Refrigeration Compressor Under Variable Operating Speeds by Willian T. F. D. da Silva, Vitor M. Braga, Cesar J. Deschamps

    Published 2025-07-01
    “…Results reveal that neither volumetric nor exergy efficiency varies monotonically with compressor speed. …”
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    Analysis of Meshing Efficiency of Straigh Bevel Gear based on Integrated Lubrication by Tang Xiaogui, Wang Bin, Li Peihong, Chen Xinbo

    Published 2017-01-01
    “…In order to predict the transient meshing efficiency of bevel gear pairs,a theoretical model of friction coefficient is established under boundary lubrication,elastohydrodynamic lubrication and mixed lubrication based on the principle of equivalent gear theory,by simplifying bevel gear into equivalent straigh gear,and by computing oil film-thickness ratio. …”
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    Analysis of the Influence of Clutch Drag Torque on the Efficiency of Hydro-mechanical Continuously Variable Transmission by Rong Chai, Mingzhu Zhang, Jianhua Wang, Fang Jia

    Published 2022-04-01
    “…In order to study the influence of multiple clutches on the transmission efficiency of a hydro-mechanical continuously variable transmission (HMCVT),the structure characteristics of a closed loop consisting of multiple wet friction clutches in the transmission are investigated. …”
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    Enhancing joint efficiency in friction stir welding of PA66 using an induction-heated threaded pin and glass fiber reinforcement by Ammar Elsheikh, Mohamed Ahmed Elmosalamy, Ninshu Ma, Ibrahim Eldeeb, Ezzat Showaib, Saad Ebied

    Published 2025-07-01
    “…This study investigates the friction stir welding (FSW) of polyamide 66 (PA66) sheets using an induction-heated threaded pin tool with a stationary shoulder. …”
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    Efficient and variable viscosity fracturing fluid of deep coal rock gas and popularization in ultimate volume fracturing by Bo LIN, Shuai CHEN, Xiangyang YAN, Mengqi CHEN, Liangjun DU, Heng CHEN, Hongsheng LU, Shuai SUN

    Published 2025-02-01
    “…By taking the advantage of SFY-2, a efficient and variable viscosity fracturing fluid is constructed to fit the design idea of coal rock gas Ultimate volume Fracturing, the variable viscosity control scheme is formulated and the construction technology is optimizated to achieve the goal of “Breaking” the coal rock sufficiently, creating complex sewing nets, filling sands fully and supporting effective. …”
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    A Novel High-Efficiency Variable Parameter Double Integration ZNN Model for Time-Varying Sylvester Equations by Zhe Peng, Yun Huang, Hongzhi Xu

    Published 2025-02-01
    “…In this paper, a High-Efficiency Variable Parameter Double Integration Zeroing Neural Network (HEVPDIZNN) model combining variable parameter function and double integration is proposed to solve the time-varying Sylvester matrix equations, using the decreasing function with a large initial value as the variable parameter. …”
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    Comparison of the efficiency of zero and first order minimization methods in neural networks by E. A. Gubareva, S. I. Khashin, E. S. Shemyakova

    Published 2022-12-01
    “…Numerous experiments show that the analytical calculation time of an N variable function’s gradient is approximately N/5 times longer than the calculation time of the function itself. …”
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    Improving Scheduling Efficiency: A Mathematical Approach to Multi-Operation Optimization in MSMEs by Reyner Pérez-Campdesuñer, Alexander Sánchez-Rodríguez, Margarita De Miguel-Guzmán, Gelmar García-Vidal, Rodobaldo Martínez-Vivar

    Published 2025-04-01
    “…The results show that prioritizing the objective function leads to a balanced optimization of all indicators, improving operational efficiency and reducing flow time. …”
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