Results 41 to 50 of about 531,135 (290)
International Journal for Computational Civil and Structural Engineering, 2020 The paper considers the example of gradual transformation of the stiffness matrix and the main set of equations at Additional Finite Element Method (AFEM). It is corresponded to the increase of load and the ideal failure model of structure. AFEM uses the
Anna Ermakova
doaj +1 more source
A nonlinear matrix equation connected to interpolation theory
Linear Algebra and its Applications, 2004 The authors study the matrix equation \(X=Q+A^*(\widehat{X}-C)^{-1}A\), where \(Q\) is an \(n\times n\) positive definite matrix, \(C\) is \(mn\times mn\) positive semidefinite, \(A\) is \(mn\times n\) (arbitrary) and \(\widehat{X}\) is \(mn\times mn\), block diagonal, with \(m\) diagonal blocks equal to \(X\).
Ran, A.C.M., Reurings, M.C.B.
openaire +3 more sources
Fine Structure of Matrix Darboux-Toda Integrable Mapping [PDF]
, 1998 We show here that matrix Darboux-Toda transformation can be written as a product of a number of mappings. Each of these mappings is a symmetry of the matrix nonlinear Shrodinger system of integro-differential equations. We thus introduce a completely new
Leznov, A. N., Yuzbashyan, E. A.
core +3 more sources
Solving Linear and Nonlinear Duffing Fractional Differential Equations Using Cubic Hermite Spline Functions [PDF]
Mathematics Interdisciplinary ResearchIn this work, we solve nonlinear Duffing fractional differential equations with integral boundary conditions in the Caputo fractional order derivative sense.
Mehrdad Lakestani, Roya Ghasemkhani
doaj +1 more source
On Whitham theory for perturbed integrable equations
, 2003 Whitham theory of modulations is developed for periodic waves described by nonlinear wave equations integrable by the inverse scattering transform method associated with $2\times2$ matrix or second order scalar spectral problems.
A.M. Kamchatnov +32 more
core +1 more source
LDAcoop: Integrating non‐linear population dynamics into the analysis of clonogenic growth in vitro
Molecular Oncology, EarlyView.Limiting dilution assays (LDAs) quantify clonogenic growth by seeding serial dilutions of cells and scoring wells for colony formation. The fraction of negative wells is plotted against cells seeded and analyzed using the non‐linear modeling of LDAcoop.
Nikko Brix +13 more
wiley +1 more source
, 2008 We apply a version of the dressing method to a system of four dimensional nonlinear Partial Differential Equations (PDEs), which contains both Pohlmeyer equation (i.e.
Bogdanov L V +13 more
core +2 more sources
Oscillation of nonlinear systems of matrix differential equations [PDF]
Proceedings of the American Mathematical Society, 1971 For systems of matrix equations of the form \[ U ′ = A ( t , U , V ) V , V ′ = − B ( t , U , V ) U’ = A(t,U,V)V,\quad V’ = - B(t,U,V ...
openaire +3 more sources
FEBS Open Bio, EarlyView.Pharmacological inhibition of PERK in a DEN‐induced mouse model of liver cancer does not reduce tumor burden but alters cellular stress signaling. Despite blocking PERK activity, downstream stress responses, including CHOP expression, remain active, suggesting compensatory mechanisms within the unfolded protein response that may influence tumor ...
Ada Lerma‐Clavero +5 more
wiley +1 more source
Physical Sciences and Technology, 2021 The work is dedicated to modeling&turbinecontrol systems and studying the stability of a nonlinear system. The dynamics of the turbine regulationsystem is described by a nonlinear&system of fourdifferential equations.
Zh. T. Bitaeva
doaj +1 more source