Bertrand oligopoly revisited by Tönu Puu

Subjects: “…Bertrand oligopoly; Hotelling's location problem; Nonlinear maps.…”
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Effect of wavelength on propagation of high-power femtosecond laser pulses in diamond by T.V. Kononenko, E.V. Zavedeev, K.K. Ashikkalieva, V.I. Konov

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Dirichlet problems with skew-symmetric drift terms by Boccardo, Lucio, Casado-Diaz, Juan, Orsina, Luigi

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Effect of residual stress on peak cap stress in arteries by Rebecca Vandiver

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The Relationship between the Depression and Anxiety Stress Survey Questionnaire, Salivary Cortisol and Heart Rate Variability by Fateme Sangtarash, Haniyeh Choobsaz, Milad Zarrin, Sousan Salari, Ehsan Mokari Manshadi, Ali Akbar Esmaeili, Sayyed Hossein Mozaffari, Boshra Hatef

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Worldview Consequences оf the Uncertainty Principle in Dynamics of Complex Systems Мировоззренческие следствия принципа неопределенности в динамике сложных систем Світоглядні наслі... by A. Y. Samars'kiy

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Data-driven modeling for electro-active liquid crystal polymer networks by Anahita Amiri, Mohammad Fahim Shakib, Ines Lopez Arteaga, Nathan van de Wouw

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A numerical approach for multi-dimensional ψ-Hilfer fractional nonlinear Galilei invariant advection–diffusion equations by M.H. Heydari, M. Razzaghi, M. Bayram

“…In this paper, we introduce the ψ-Hilfer fractional version of nonlinear Galilei-invariant advection–diffusion equations in one and two dimensions. …”
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Nonlinear Creep Model of Deep Gangue Backfilling Material and Time-Dependent Characteristics of Roof Deformation in Backfilling Mining by Peng Huang, Jixiong Zhang, Qi Zhang, Ntigurirwa Jean Damascene, Yuming Guo

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Modulation Instability, Analytical, and Numerical Studies for Integrable Time Fractional Nonlinear Model through Two Explicit Methods by Md. Mamunur Roshid, Mosfiqur Rahman, Mahtab Uddin, Harun Or Roshid

“…For this purpose, we used unified and advanced exp−ϕξ-expansion approaches that are highly important tools to solve the fractional model and are used to create nonlinear wave pattern (both solitary and periodic wave) solutions for the time-fractional K-G model. …”
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Permanence of Periodic Predator-Prey System with General Nonlinear Functional Response and Stage Structure for Both Predator and Prey by Xuming Huang, Xiangzeng Kong, Wensheng Yang

“…We study the permanence of periodic predator-prey system with general nonlinear functional responses and stage structure for both predator and prey and obtain that the predator and the prey species are permanent.…”
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Model-Free Speed Control for Pumping Kite Generator Systems Based on Nonlinear Hyperbolic Tangent Tracking Differentiator by Mouaad Belguedri, Abdeldjabar Benrabah, Farid Khoucha, Emmanuel Delaleau, Mohamed Benbouzid, Khelifa Benmansour

“…To further improve the control performances, a tracking differentiator based on a nonlinear hyperbolic tangent function is integrated in the MFC. …”
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Optimizing the WEEE Recovery Network Associated with Environmental Protection Awareness and Government Subsidy by Nonlinear Mixed Integer Programming by Yanan Bo, Yanqi Wang, Zhong Wan

“…In this paper, we optimize the WEEE recovery network which is associated with recycling prices and government subsidies by a nonlinear mixed integer programming approach. An integrated model is first proposed to formulate a design problem of WEEE recovery network, being involved with collection centers, two types of transfer stations, processing centers, incineration plants, landfill plants, secondhand product markets, and government subsides. …”
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Direct Adaptive Tracking Control for a Class of Pure-Feedback Stochastic Nonlinear Systems Based on Fuzzy-Approximation by Huanqing Wang, Xiaoping Liu, Qi Zhou, Hamid Reza Karimi

“…The problem of fuzzy-based direct adaptive tracking control is considered for a class of pure-feedback stochastic nonlinear systems. During the controller design, fuzzy logic systems are used to approximate the packaged unknown nonlinearities, and then a novel direct adaptive controller is constructed via backstepping technique. …”
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Experimental investigation of the second-mode internal solitary wave in continuous pycnocline and the applicability of weakly nonlinear theoretical models by Shaodong Wang, Hui Du, Gang Wei, Zhentao Chen, Jianqiao Shi, Zhenyang Lan

Subjects: “…applicability of weakly nonlinear theoretical models…”
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Multiple Solutions for Nonlinear Navier Boundary Systems Involving (p1(x),…,pn(x))-Biharmonic Problem by Qing Miao

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Enhanced Bearing Fault Detection Using Step-Varying Vibrational Resonance Based on Duffing Oscillator Nonlinear System by Yongbin Liu, Zhijia Dai, Siliang Lu, Fang Liu, Jiwen Zhao, Jiale Shen

“…Given this, a step-varying vibrational resonance (SVVR) method based on Duffing oscillator nonlinear system is proposed to enhance the weak status feature of bearing by tuning different parameters. …”
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Retracted: Numerical Solution of Nonlinear Fredholm Integrodifferential Equations by Hybrid of Block-Pulse Functions and Normalized Bernstein Polynomials by Abstract and Applied Analysis

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Analytic Solution for Nonlinear Multimode Beam Vibration Using a Modified Harmonic Balance Approach and Vieta’s Substitution by Y. Y. Lee

“…This paper presents a modified harmonic balance solution method incorporated with Vieta’s substitution technique for nonlinear multimode damped beam vibration. The aim of the modification in the solution procedures is to develop the analytic formulations, which are used to calculate the vibration amplitudes of a nonlinear multimode damped beam without the need of nonlinear equation solver for the nonlinear algebraic equations generated in the harmonic balance processes. …”
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Surface crystal-orientation-dependent second-order nonlinear optical properties of cubic boron arsenide (c-BAs) by Lipeng Zhu, Yachao Ma, Chuyi Zhou, Tanwen Lai, Aochi Jia, Yipeng Zheng, Kaili Ren, Dongdong Han, Jun Dong, Ze Xue, Yani Ren, Qiyi Zhao, Chuan He, Jiming Zheng

“…However, there is relatively little research on the nonlinear optical properties of c-BAs. Herein, the electronic, linear, and nonlinear second-order optical properties have been systematically investigated by the first principles calculation method. …”
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