Results 51 to 60 of about 220,793 (302)
On the Approximation of the Cut and Step Functions by Logistic and Gompertz Functions
Biomath, 2015 We study the uniform approximation of the sigmoid cut function by smooth sigmoid functions such as the logistic and the Gompertz functions. The limiting case of the interval-valued step function is discussed using Hausdorff metric.
Anton Iliev Iliev +2 more
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Frontiers in Energy Research, 2023 Introduction: This paper proposes a sigmoid-based adaptive inertia control strategy for grid-forming (GFM) inverter to enhance frequency stability.Methods: Firstly, the frequency response characteristics under different disturbances are analyzed ...
Renzhi Huang +6 more
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An Efficient Topology Description Function Method Based on Modified Sigmoid Function [PDF]
Mathematical Problems in Engineering, 2018 Optimal geometries extracted from traditional element-based topology optimization outcomes usually have zigzag boundaries, leading to being difficult to fabricate. In this study, a fairly accurate and efficient topology description function method (TDFM) for topology optimization of linear elastic structures is developed.
Xingfa Yang +4 more
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Advanced Engineering Materials, EarlyView.Curvature‐tuned auxetic lattices are designed, fabricated, and mechanically characterized to reveal how geometric curvature governs stretchability, stress redistribution, and Poisson's ratio evolution. Photoelastic experiments visualize stress pathways, while hyperelastic simulations quantify deformation mechanics.
Shuvodeep De +3 more
wiley +1 more source
Contrast Enhancement Using Sensitivity Model-Based Sigmoid Function
IEEE Access, 2019 For indirect contrast enhancement, researchers have proposed various transformation functions based on histogram equalization and gamma correction.
Seung Park, Yong-Goo Shin, Sung-Jea Ko
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Discontinuities in recurrent neural networks [PDF]
, 1997 This paper studies the computational power of various discontinuous real computational models that are based on the classical analog recurrent neural network (ARNN).
Gavaldà Mestre, Ricard +1 more
core +1 more source
Advanced Functional Materials, EarlyView.Electric control of magnetic tunnel junctions offers a path to drastically reduce the energy requirements of the device. Electric field control of magnetization can be realized in a multitude of ways. These mechanisms can be integrated into existing spintronic devices to further reduce the operational energy.
Will Echtenkamp +7 more
wiley +1 more source
Sharp Coefficient Problems of Functions with Bounded Turnings Subordinated by Sigmoid Function
Mathematics, 2022 This study deals with analytic functions with bounded turnings, defined in the disk Od=z ...
Muhammad Arif +5 more
doaj +1 more source
The approximation operators with sigmoidal functions
Computers & Mathematics with Applications, 2009 zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Chen, Zhixiang, Cao, Feilong
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