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Showing 421 - 440 results of 1,052 for search '(( variable friction efficiency. ) OR ( variable function coefficiency. ))', query time: 0.15s Refine Results
  1. 421

    Large Deformation Elastic Analysis of Pressurized FGM Thick Cylindrical Shells with Nonlinear Plane Elasticity Theory (NPET) by Navid Bahadorani, Mehdi Ghannad, Mohammad Hossein Sohani, Bahman Modiri

    Published 2025-04-01
    “…Because of large deformations along the radial direction and hence the existence of nonlinear terms in kinematic equations, the governing equation is a nonlinear second-order equation with variable coefficients, which is solved in plane stress and plane strain states using the perturbation technique. …”
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  2. 422

    Boundary value problems for discontinuously loaded parabolic equations by Mukhamed M. Karmokov, Fatima M. Nakhusheva, Sakinat K. Gekkieva

    Published 2024-10-01
    “…The article deals with boundary value problems for a discontinuously loaded parabolic equation with a Riemann – Liouville fractional integro-differentiation operator with variable coefficients. The unambiguous solvability of the Cauchy – Dirichlet problem for a discontinuously loaded parabolic equation of fractional order is proved. …”
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  3. 423

    Frequency Responses Resistance to Variations of Electric Filter Parameters by E. N. Chervinskiy

    Published 2017-06-01
    “…When electric filter designs "on the whole" circuit's parameters are determined as a result of solving the system of equations formed by equating of coefficients at equal powers of the variable in terms of desirable transfer function (TF) and TF filter. …”
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  4. 424

    Canal Geometry, Flow Velocity, Dallisgrass (Paspalum dilatatum Poir.) Density and Soil Phosphorous Effects on Hydraulic Resistance of Vegetated Canals by Abolfazl Nasserı

    Published 2016-03-01
    “…Therefore, a regression model comprises both the roughness coefficient as a dependent variable and the flow velocity and canal slope as an independent variable is developed. …”
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  5. 425

    Intelligent forecasting model for aquatic production based on artificial neural network by Junqiao Hu, Jingyu Yin, Chaohui Yang, Yanxi Zhou, Changqing Li, Changqing Li

    Published 2025-08-01
    “…GDP per capita is found to be the most critical factor, followed by climate-related variables (sunshine duration, temperature) and socioeconomic indicators (Engel coefficient, consumer price index). …”
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  6. 426

    Rheological models of trabecular structures joint implants obtained by additive processes by Олександр Саленко, Микола Крищук, Наталія Гаврушкевич, Галина Габузян, Дмитро Джулій

    Published 2024-06-01
    “…It is taken into account that the implant itself should be made in the form of a combined set of functional elements (or initial surfaces), the dynamic properties of which are variable and maximally adapted to the properties of the connected bone, which allows to preserve the initial properties of the bones of the joints as much as possible while ensuring the proper strength and reliability of the structure in as a whole The interdependence of the results of surgical intervention with the patient's initial condition, indications for treatment, his activity and possible postoperative complications was analyzed. …”
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  7. 427

    Numerical approximation of time-fractional nonlinear partial integro-differential equation using fractional Euler and cubic trigonometric B-Spline methods by Mehwish Saleem, Arshed Ali, Fazal-i-Haq, Hassan Khan

    Published 2025-09-01
    “…Efficiency and reliability of the current method is analyzed for the fractional-order via three highly nonlinear test problems with variable coefficients. The rate of convergence of the proposed method is also computed in temporal and spatial dimensions.…”
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  8. 428

    Study of kinetic performance effect on wheel and rail wear using computer simulation by Lev I. Evelson, Evgeny A. Pamfilov, Alexander G. Tsygankov, Ludmila I. Shiryaeva

    Published 2016-06-01
    “…The problems solved here are analysis of the earlier proposed mathematical functions describing the kinetic performance for the presence of extremes, the functional behavior (growth, decrease, monotonicity, and unimodality, etc.) in various parameter ranges; implementation of the computer simulation of the wheelpair movement by rail with the quantitative estimation of the wheel and rail wear with various kinetic performance parameters; to determine qualitative influence patterns of the kinetic wear performance. …”
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  9. 429

    Algorithm for Finding Feedback in a Problem with Constraints for One Class of Nonlinear Control Systems by Michail G. Dmitriev, Zainelkhriet N. Murzabekov, Gulbanu A. Mirzakhmedova

    Published 2021-10-01
    “…For this, the solution of an auxiliary optimal control problem with a quadratic functional is used by analogy with the SDRE approach.Since this approach is used in the literature to find suboptimal synthesis in optimal control problems with a quadratic functional with formally linear systems, where all coefficient matrices in differential equations and criteria can contain state variables, then on a finite time interval it becomes necessary to solve a complicated matrix differential Riccati equations, with state-dependent coefficient matrices. …”
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  10. 430

    Assessment of the significance of factors associated with the development of long-term adverse cardiovascular events in type 2 diabetes mellitus by D. V. Grazhdankina, I. A. Bondar, A. A. Demin

    Published 2022-10-01
    “…Concentration of N-terminal pro-brain natriuretic peptide (NTproBNP) was determined on an Immulait 2000 Siemens analyzer by immunochemiluminescence assay. Glycemic variability was assessed by calculating the standard deviation (SD) and coefficient of variation (CV) of glycemia during the day according to laboratory measurements of glucose levels at least 3 times a day for at least 3 days. …”
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    Characterization and Comparison of Athletic Performance and Change of Direction Deficit Across Youth Futsal Age Groups by João P. Oliveira, Daniel A. Marinho, Tatiana Sampaio, Sílvio Carvalho, Hugo Martins, Jorge E. Morais

    Published 2025-03-01
    “…<b>Background/Objectives:</b> Futsal players need peak strength, functional capacity, speed, and explosive lower-limb power for optimal performance. …”
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