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41 resultados encontrados.

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Existence and uniqueness of the solution of an integro-differential equation of the second order with boundary conditions
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Azzam S. Younis · University of Mosul, College of Education for Pure Science · 2010 · ISSN 1812-125X
Abstract In this paper we investigate the existence and approximation solution for nonlinear system of an integro-differential equation of the second order with boundary conditions by using the numerical-analytic method ...
LCC TENDOkVkdWNhdGlvbg~~; LCC:Science (General)Idioma eng
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Existence of a Solution of a Certain Volterra –Fredholm Integro Differential Equations
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Akram H. Mahmood et al · University of Mosul, College of Education for Pure Science · 2012 · ISSN 1812-125X
Abstract In this paper, e investigate the existence of global solution for nonlinear mixed Volterra–Fredholm integro differential equation with nonlocal condition in Banach space. Our results depend on Leray –Schaude...
LCC TENDOkVkdWNhdGlvbg~~; LCC:Science (General)Idioma eng
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Implementing Runge-Kutta Method of Sixth-Order for Numerical Solution of Fuzzy Differential Equations
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Marwa Alsafar et al · University of Mosul, College of Education for Pure Science · 2023 · ISSN 1812-125X
The article talks about the increasing importance of the practical use of fuzzy differential equations in modeling complex problems in various fields, such as science and engineering, as these differential equations allo...
LCC TENDOkVkdWNhdGlvbg~~; LCC:Science (General)Idioma eng
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Improving the Analytical Method of Convergence Using Runge-Kutta Optimization Algorithm for Solving Fractional-Order Nonlinear Differential Equations
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Shwan Abdal et al · University of Mosul, College of Education for Pure Science · 2025 · ISSN 1812-125X
Differential equations are equations that relate a function to one or more of its derivatives. Nonlinear means that the equation is not directly proportional to the function and its derivatives. In other words, its varia...
LCC TENDOkVkdWNhdGlvbg~~; LCC:Science (General)Idioma eng
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Local and global Solution of fractional Nonlinear Integro-Differential Equation
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Ghada Shuker Jameel · University of Mosul, College of Education for Pure Science · 2013 · ISSN 1812-125X
ABSTRACT In this paper we study the existence, uniqueness and stability solution of fractional nonlinear integro-differential equation, by using the Picard approximation method , and Banach fixed point method. also we ex...
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Numerical Solution for Solving Linear Fractional Differential Equations using Chebyshev Wavelets
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Inaam Abdulbaset Fathi et al · University of Mosul, College of Education for Pure Science · 2023 · ISSN 1812-125X
In this paper, a numerical method for solving linear fractional differential equations using Chebyshev wavelets matrices has been presented. Fractional differential equations have received great attention in the recent p...
LCC TENDOkVkdWNhdGlvbg~~; LCC:Science (General)Idioma eng
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Periodic Solutions for Nonlinear System of Differential Equations of Third Order with Boundary Conditions
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Raad N. Butris et al · University of Mosul, College of Education for Pure Science · 2013 · ISSN 1812-125X
ABSTRACT In this study we investigate the existence and approximation of the periodic solutions for nonlinear system of differential equations of third order with boundary conditions. The numerical-analytic method has be...
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Some theorems in existence and oneness of a system of integral - nonlinear differential equations
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Raed Butrus et al · University of Mosul, College of Education for Pure Science · 2006 · ISSN 1812-125X
In this paper we study the existence and uniqueness solution for system of nonlinear integro-differential equations by usingRiemann integral. For this purpose, the study depends upon(Picard approximation Method) and (Ban...
LCC TENDOkVkdWNhdGlvbg~~; LCC:Science (General)Idioma eng
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The existence and convergence of the solution to a system of non-linear integral-differential equations of the first rank with the requirements of integration
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Raad Petrus et al · University of Mosul, College of Education for Pure Science · 2006 · ISSN 1812-125X
In this paper we investigate the existence and approximation for nonlinear system of integro-differential equation with boundary integral conditions by using the numerical-analytic method for investigating of a periodic ...
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Existence and Unity of the Solution of Integral-Linear Differential Equations with Fractional Ranks Using the Fixed Point Banach Theorem
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Raad Butrus et al · University of Mosul, College of Education for Pure Science · 2019 · ISSN 1812-125X
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The existence and approximation of the periodic solutions for system of second order nonlinear differential equationsby using Lebesgue integrable
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Merna Adel Aziz et al · University of Mosul, College of Education for Pure Science · 2007 · ISSN 1812-125X
ABSTRACT In this paper we study the existence and approximation of the periodicsolutions for system of second order nonlinear differential equations according to Lebesgue integrable concept and by assuming that each of ...
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Exact Solutions and Dynamic Analysis for a Fractional Partial Differential Equation Emerging in Mathematical Biology
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Hongqiang Tu et al · Wiley · 2026 · ISSN 2314-4785
This study investigates a fractional partial differential equation in the field of mathematical biology. The Bernoulli (G'⁄G)-expansion method is applied to solve this class of fractional-order nonlinear differential e...
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Forecasting virus outbreaks with social media data via neural ordinary differential equations
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Nuñez, Matias et al · Nature · 2023 · ISSN 2045-2322
During the Covid-19 pandemic, real-time social media data could in principle be used as an early predictor of a new epidemic wave. This possibility is examined here by employing a neural ordinary differential equation (n...
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Optimal control of stochastic multi-valued impulsive non-autonomous differential equations with delayed force term: optimal mild solution
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Nageshwari Sivakumar et al · SpringerOpen · 2026 · ISSN 1029-242X
Abstract This article is concerned with the optimal mild solution and optimal control for stochastic Caputo fractional multi-valued impulsive non-autonomous differential equations with delayed force term and fractional B...
LCC LCC:MathematicsIdioma eng
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Protein folding with neural ordinary differential equations
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Arielle Sanford et al · IOP Publishing · 2026 · ISSN 2632-2153
Recent advances in protein structure prediction, such as AlphaFold, have demonstrated the power of deep neural architectures like the Evoformer for capturing complex spatial and evolutionary constraints on protein confor...
LCC TENDOkNvbXB1dGVyIGVuZ2luZWVyaW5nLiBDb21wdXRlciBoYXJkd2FyZQ~~; LCC:Electronic computers. Computer scienceIdioma eng
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Time-step-size-independent conditioning and sensitivity to perturbations in the numerical solution of index three differential algebraic equations
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Bottasso, Carlo et al · Siam Publications · 2007 · ISSN 1064-8275
We propose a simple preconditioning for the equations of motion of constrained mechanical systems in index three form. The scaling transformation is applied to the displacement‐velocity‐multiplier and to the reduced ...
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Investigating the Numerical solution of the BoltzmannTransport Equation in silicon in Momentum Space Using Computational Systems of Different Dimensions
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Mumtaz Hussien et al · University of Mosul, College of Education for Pure Science · 2020 · ISSN 1812-125X
Abstract The Boltzmann transport equation is the basic equation for solving the transport of charge carrier (electrons, holes) problems in semiconductor devices. The distribution function has been obtained from the solut...
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Performance of affine-splitting pseudo-spectral methods for fractional complex Ginzburg-Landau equations
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Raviola, Lisandro et al · Elsevier Science Inc · 2024 · ISSN 0096-3003
We evaluate the performance of novel numerical methods for solving one-dimensional nonlinear fractional dispersive and dissipative evolution equations. The methods are based on affine combinations of time-splitting integ...
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Enhanced power quality in grid-connected wind energy systems using PI-controlled with doubly fed induction generator optimized by hybrid differential evolution and grey wolf algorithm
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R. F. Abdelgoui et al · National Technical University "Kharkiv Polytechnic Institute" · 2026 · ISSN 2074-272X
Introduction. Nowadays, the most widely used wind energy conversion system in wind farms is based on a doubly fed induction generator (DFIG); it has a large speed range and can function in multiple modes. Problem. Harmon...
LCC LCC:Electrical engineering. Electronics. Nuclear engineeringIdioma eng
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Chaotic behavior and solution structures of the Chaffee–Infante equation under external forces
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Wali Samad et al · De Gruyter · 2026 · ISSN 2391-5471
This study presents the dynamical analysis and soliton solutions of the Chaffee–Infante equation, an important nonlinear evolution model. The Chaffee Infante equation, widely employed as a reaction–diffusion model, i...
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Double ARA–Generalized Laplace Method for Solving (2 +1)–Dimensional Nonlinear Singular Pseudoparabolic Equations
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Rania Saadeh et al · Wiley · 2026 · ISSN 1687-0042
This study presents a novel triple integral transformation, called the double ARA–generalized Laplace transform (DAGLT), and applies it to solve (2+1)–dimensional singular pseudoparabolic equations in both linear and...
LCC LCC:MathematicsIdioma eng
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A New Flexible Multibody Dynamics Analysis Methodology of Deployable Structures with Scissor-Like Elements
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Qi’an Peng et al · KeAi Communications Co., Ltd · 2019 · ISSN 1000-9345
Abstract There are vast constraint equations in conventional dynamics analysis of deployable structures, which lead to differential-algebraic equations (DAEs) solved hard. To reduce the difficulty of solving and the amou...
LCC LCC:Ocean engineering; TENDOk1lY2hhbmljYWwgZW5naW5lZXJpbmcgYW5kIG1hY2hpbmVyeQ~~Idioma eng
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Improving Airplane Touchdown Control by Utilizing the Adverse Elevator Effect
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Nihad E Daidzic · Embry-Riddle Aeronautical University · 2014 · ISSN 2374-6793
The main objective of this original research article is to understand the short-term dynamic behavior of the transport-category airplane during landing flare elevator control application. Increasing the pitch angle to ar...
LCC LCC:Motor vehicles. Aeronautics. AstronauticsIdioma eng
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Incidence of arterial hypertension in Germany 2009–2018 based on prevalence data from 70 million patients from the statutory health insurance
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Florian Hankewitz et al · BMC · 2026 · ISSN 1471-2261
Abstract Background Hypertension is an important risk factor for cardiovascular diseases, morbidity and mortality. In Germany, elevated systolic blood pressure is associated with more than half of all cardiovascular deat...
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