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Methods to Quantitatively Evaluate the Effect of Shale Gas Fracturing Stimulation Based on Least Squares
Published 2025-07-01“…The optimization targeted the perforation friction coefficient <italic>k</italic><sub>perf</sub> as the primary unknown variable. …”
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903
基于modeFRONTIER的离合器碟形弹簧多目标优化设计
Published 2011-01-01“…Based on the analysis of the working characters of disc springs in clutch,the mathematical model of multi-objective optimal design of disc springs is established with unified objective function method,which regards the minimization of the disc spring volume and its average variable quantity of working compress force within the scope of friction lining wear as optimal objectives.The optimization calculation is presented by using the software modeFRONTIER.The results indicate that the relevant performance of disc springs is significantly improved after optimal design,with the objective function values reduced by 36% and 6% respectively.The software modeFRONTIER,with its simplicity and efficient algorithm,solves optimization problems and improves design efficiency.…”
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904
Comparison and System Development of a Two-Coil and Three-Coil Inductive Link for Transcutaneous Power Transfer
Published 2025-01-01“…For devices with a relatively high power consumption and located right under the skin, wireless power transfer through an inductive link is the most reliable method to ensure robust and long-term functionality. However, the efficiency of these inductive links highly depends on the size, location and variable power consumption of the implant. …”
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905
Numerical and Experimental Study of a Hydrodynamic Analysis of the Periodical Fluctuation of Bio-Inspired Banded Fins
Published 2025-02-01“…By using a method of controlling variables, such as wave number, swing angle, and frequency, where only one independent variable is changed at a time while the others remain constant, the impact on thrust coefficient function and the obtained periodic variation laws governing hydrodynamic performance are studied. …”
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906
Pengaruh Komite Audit Terhadap Kinerja Keuangan Perusahaan Dengan Dewan Komisaris Sebagai Variabel Intervening
Published 2020-12-01“…This result means that the board of Commissioners variable cannot be an intervening variable of the audit committee on financial performance, because the effective supervisory function in evaluating the results of internal and external audits on the presentation of financial statements becomes the role of the audit committee.…”
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907
Analysis Method of Agricultural Total Factor Productivity Based on Stochastic Block Model (SBM) and Machine Learning
Published 2022-01-01“…It uses the SBM direction distance function and the Luenberger productivity index to measure the agricultural efficiency, total factor productivity, and their components. …”
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908
Zoning and Identification of Factors Affecting Illegal Livestock Grazing in Golestan National Park Using Logistic Regression
Published 2025-04-01“…The Aspect factor with a coefficient of 0.0015 was determined to be the least influential independent variable. …”
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909
Analysis of Heat Transfer Performance in a Brayton Cycle Recuperator
Published 2021-02-01“…The characteristic curves of heat transfer rate, effectiveness, convection coefficient and Colburn factor are built for each of the studied geometries in function of the Reynolds number. …”
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910
Design of Reinforcement Learning Guidance Law for Antitorpedo Torpedoes
Published 2025-01-01“…Integrating engineering design, the intelligent guidance law for antitorpedo torpedoes proposed in this article selects the rate of change in the line-of-sight angle as the state variable, designs a reward function based on interception results, and designs a discretized behavior space based on the commonly used proportional guidance coefficient selection range. …”
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911
Multi-objective design optimization of a transonic axial fan stage using sparse active subspaces
Published 2024-12-01“…Active subspace was used to compute the active variables via singular value decomposition and a hybrid polynomial correlated function expansion was used to construct a surrogate model on the active subspace. …”
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912
KERNEL DETERMINATION PROBLEM FOR ONE PARABOLIC EQUATION WITH MEMORY
Published 2023-12-01“…This paper studies the inverse problem of determining a multidimensional kernel function of an integral term which depends on the time variable \(t\) and \((n-1)\)-dimensional space variable \(x'= \left(x_1,\ldots, x_ {n-1}\right)\) in the \(n\)-dimensional diffusion equation with a time-variable coefficient at the Laplacian of a direct problem solution. …”
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913
A Bayesian-Weighted Inverse Gaussian Regression Model with Application to Seismological Data
Published 2022-01-01“…In the proposed model, the complementary reciprocal of the location parameter of response variable is considered to be a linear function of the explanatory variables. …”
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914
Three-Dimensional Modified Cross-Section Hydrofoil Design and Performance Study
Published 2025-04-01“…To improve the hydrodynamic performance of hydrofoils, this study combines the shape characteristics of flat and elliptical wings, uses parabolic function to fit the leading and trailing edges of hydrofoils, introduces the cross-section coefficient <i>λ</i> to characterize the cross-sectional size of hydrofoils along the spreading direction, and designs five hydrofoils with different cross-sections. …”
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915
Performance evaluation of atmospheric water generation in different climates using thermoelectric cooling
Published 2025-04-01“…In contrast, the variable voltage mode improves efficiency by 30 %, albeit with a lower water yield. …”
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916
A novel unified variational finite difference (VFD) solution method for optimal control problems
Published 2025-05-01“…This article is aimed to propose a simple yet efficient unified numerical strategy for solving both linear and non-linear optimal control problems. …”
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917
Modeling of Thermal Distributions around a Barrier at the Interface of Coating and Substrate
Published 2013-01-01“…Using integral transform method, two-dimensional steady-state diffusion equation with variable conductivity is turned into constant coefficient differential equation. …”
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918
Lattice Boltzmann Method for the Generalized Black-Scholes Equation
Published 2023-01-01“…The proposed lattice Boltzmann model can also be applied to a class of partial differential equations with variable coefficients and source terms.…”
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919
High-accuracy solution of pantograph differential equations subject to mixed boundary conditions via shifted Vieta–Lucas polynomials
Published 2025-08-01“…A Galerkin method (GM) is formulated for constant coefficient-type equations, and a spectral collocation method (SCM) is given for variable coefficient cases. …”
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920
Theoretical and technical concept of cemented backfill material for flexible enhanced thermal energy storage in coal underground space
Published 2025-04-01“…The research status of backfill mining is analyzed based on the current coal mining technology and the scientific concept of "cemented backfill material for flexible enhanced thermal energy storage (CBM–FETES)" is proposed by integrating the idea of functional filling. The core of CBM–FETES is to ensure the four essential conditions: the suitability of geological conditions, the feasibility of thermal storage and extraction technologies, high efficiency in heat and mass transfer, and the safety and stability of the operational cycle. …”
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