Search Results - "Tangent function"

Decreasing property of ratio of two logarithmic expressions involving tangent function.

Authors: Qi, Feng Agarwal, Ravi Prakash Lim, Dongkyu

Source: Mathematical & Computer Modelling of Dynamical Systems. Dec2025, Vol. 31 Issue 1, p1-16. 16p.

Subjects: Logarithms, Tangent function, Differentiable functions, Ratio & proportion, Mathematics, Logic, Monotonic functions

Saturated RISE Control of Hydraulic Servo System with Modeling Uncertainties.

Authors: Dongjie Bai Zhenle Dong Pengxiang Zhang et al.

Source: Engineering Letters. Jun2025, Vol. 33 Issue 6, p2128-2133. 6p.

Subjects: Hydraulic control systems, Tangent function, Dynamic pressure, Hyperbolic functions, Hydraulic models, Valves

A self-adaptive finite-step length method based on the inverse tangent function for accurate and efficient structural reliability analysis.

Authors: Xia, Yu Hu, Yiying Kong, Wenzheng et al.

Source: Engineering Optimization. May2026, Vol. 58 Issue 5, p1511-1547. 37p.

Subjects: Structural reliability, Tangent function, Mathematical optimization, Iterative methods (Mathematics), Engineering, Numerical analysis

Monotonicity results of ratio between two normalized remainders of Maclaurin series expansion for square of tangent function.

Authors: Liu, Xin-Le Qi, Feng

Source: Mathematica Slovaca. Jun2025, Vol. 75 Issue 3, p699-705. 7p.

Rank-one approximation of a higher-order tensor by a Riemannian trust-region method: Rank-one approximation of a higher-order tensor by a Riemannian...: J. Chen, W. Huang.

Authors: Chen, Jianheng Huang, Wen

Source: Computational Optimization & Applications. Mar2025, Vol. 90 Issue 2, p515-556. 42p.

Subjects: Computational mathematics, Tangent function, Vector valued functions

Three-Dimensional Multi-Material Topology Optimization: Applying a New Mapping-Based Projection Function.

Authors: Simonetti, Hélio Luiz Neves, Francisco de Assis das Almeida, Valério Silva et al.

Source: Materials (1996-1944). Mar2025, Vol. 18 Issue 5, p997. 21p.

Subjects: Hyperbolic functions, Tangent function, Manufacturing processes, Sensitivity analysis, Topology

Symmetrized, Perturbed Hyperbolic Tangent-Based Complex-Valued Trigonometric and Hyperbolic Neural Network Accelerated Approximation.

Authors: Anastassiou, George A.¹ (AUTHOR)

Source: Mathematics (2227-7390). May2025, Vol. 13 Issue 10, p1688. 11p.

Unsupervised change detection in SAR images using a non-local mean filter and hyperbolic tangent sigmoid function.

Authors: Atasever, Ümit Haluk Elzein, Ahmed Abbas, Hussein Hadi

Source: Remote Sensing Letters. May2025, Vol. 16 Issue 5, p483-493. 11p.

MTAHG and MTBHG: Modified Approaches for Interpreting Gravity Data.

Authors: Deniz Toktay, Hazel Ai, Hanbing Alvandi, Ahmad et al.

Source: Earth & Space Science. Apr2025, Vol. 12 Issue 4, p1-21. 21p.

SEVERAL NEW INEQUALITIES OF TANC FUNCTION WITH APPLICATIONS TO SEIFFERT MEAN.

Authors: Wen-Hui Li Bai-Ni Guo

Source: Applicable Analysis & Discrete Mathematics. Apr2025, Vol. 19 Issue 1, p76-87. 12p.

Second-Order Optimality Conditions for Nonconvex Set-Constrained Optimization Problems.

Authors: Gfrerer, Helmut Ye, Jane J. Zhou, Jinchuan

Source: Mathematics of Operations Research (INFORMS). Aug2022, Vol. 47 Issue 3, p2344-2365. 22p.

Topology‐preserving phase‐field modeling of elastic bending energy.

Authors: Poudel, Sanjeeb Wang, Xiaoqiang

Source: Numerical Methods for Partial Differential Equations. Jan2025, Vol. 41 Issue 1, p1-19. 19p.

Subjects: Tangent function, Hyperbolic functions, Blood cells, Energy consumption, Topology

Nonlinear Analyses of Unsymmetrical Locking Range of Injected Cross-Coupled Oscillator.

Authors: Mohammadjany, Armin Hazeri, Ali Reza Miar-Naimi, Hossein

Source: Circuits, Systems & Signal Processing. Dec2024, Vol. 43 Issue 12, p7548-7563. 16p.

Subjects: Circuit elements, Tangent function, Differential equations, Inverse functions, Nonlinear analysis

Unconditionally energy-stable and accurate schemes based on hyperbolic tangent scalar auxiliary variable approach for gradient flows.

Authors: Zhou, Haihong Zhang, Huan Pan, Xiaomin

Source: Computers & Mathematics with Applications. Feb2026, Vol. 204, p263-282. 20p.

Subjects: Tangent function, Phase separation, Mathematical models, Derivatives (Mathematics)

Solving a non‐standard Optimal Control royalty payment problem using a new modified shooting method.

Authors: Sufahani, Suliadi Firdaus Ahmad, Wan Noor Afifah Wan Jacob, Kavikumar et al.

Source: Mathematical Methods in the Applied Sciences. 1/30/2025, Vol. 48 Issue 2, p2665-2685. 21p.

Parametrized Half-Hyperbolic Tangent Function-Activated Complex-Valued Neural Network Approximation.

Authors: Anastassiou, George A. Karateke, Seda

Source: Symmetry (20738994). Dec2024, Vol. 16 Issue 12, p1568. 27p.

Multivariate Smooth Symmetrized and Perturbed Hyperbolic Tangent Neural Network Approximation over Infinite Domains.

Authors: Anastassiou, George A.¹ (AUTHOR) ganastss@memphis.edu

Source: Mathematics (2227-7390). Dec2024, Vol. 12 Issue 23, p3777. 25p.

Dynamic event‐triggered adaptive neural nonsingular fixed‐time attitude control for multi‐UAVs systems.

Authors: Wang, Huanqing Li, Muxuan Shen, Haikuo

Source: International Journal of Adaptive Control & Signal Processing. Sep2024, Vol. 38 Issue 9, p3102-3120. 19p.

Subjects: Backstepping control method, Tangent function, Hyperbolic functions, Nonlinear systems, Nonlinear equations, Adaptive control systems, Artificial satellite attitude control systems

Detecting edges of geological sources from gravity or magnetic anomalies through a novel algorithm based on the hyperbolic tangent function.

Authors: AI, Hanbing EKİNCİ, Yunus Levent ALVANDI, Ahmad et al.

Source: Turkish Journal of Earth Sciences. 2024, Vol. 33 Issue 6, p684-701. 18p.

Subjects: Tangent function, Gravity anomalies, Hyperbolic functions, Magnetic anomalies, Directional derivatives

Schur-convexity of two means defined by inverse sine and tangent functions with applications.

Authors: Yin, Hong-Ping Wang, Jing-Yu Liu, Xi-Min et al.

Source: Journal of Applied Analysis. May2026, p1. 10p.