Results 101 to 110 of about 81,469 (234)
Approximate Stability Analysis of Omega‐Stringer Stiffened Composite Panels
PAMM, Volume 26, Issue 1, March 2026.ABSTRACT Thin‐walled composite structures are widely used in weight‐critical applications such as aircraft and spacecraft. However, ensuring the stability of such structures under various load cases remains a key challenge in their design and optimization.
Cherine El Yaakoubi‐Mesbah +1 more
wiley +1 more source
Free vibration and damping analysis of the cylindrical shell partially covered with equidistant multi-ring hard coating based on a unified Jacobi-Ritz method. [PDF]
Sci Prog, 2021 Yang J, Song H, Chen D, Zhang Y.
europepmc +1 more source
On the Convergence of Ritz-Galerkin's Method
Publications of the Research Institute for Mathematical Sciences, 1968 where D is a bounded domain in the (#, jO -plane, P is the boundary of D, and 0), &(:>0), c(>0), / are smooth functions defined on D. In Ritz-Galerkin's method, first we choose a system of linearly independent functions {^J such that they satisfy the given homogeneous boundary condition and they are dense in a function space containing the exact ...
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On the Rayleigh-Ritz variational method
, 2022 We give a simple proof of the well known fact that the approximate eigenvalues provided by the Rayleigh-Ritz variational method are increasingly accurate upper bounds to the exact ones. To this end, we resort to the variational principle, mentioned in most textbooks on quantum chemistry, and to a well known set of projection operators.
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Veterinary Medicine and Science, Volume 12, Issue 2, March 2026.This study assessed probiotic and synbiotic supplementation via drinking water in Eimeria challenged broilers. In a 2×3 factorial design with 360 Cobb 500 chickens, Eimeria impaired growth, FCR and gut morphology, while probiotics and synbiotics improved performance, intestinal structure and serum biochemistry, alleviating coccidiosis induced damage ...
Subash Chhetri +5 more
wiley +1 more source
Shock and Vibration, 2016 This paper presents free vibration analysis of open and closed shells with arbitrary boundary conditions using a spectro-geometric-Ritz method. In this method, regardless of the boundary conditions, each of the displacement components of open and closed ...
Dongyan Shi +4 more
doaj +1 more source
Exploiting symmetries in the modeling and analysis of tires [PDF]
A computational procedure is presented for reducing the size of the analysis models of tires having unsymmetric material, geometry and/or loading. The two key elements of the procedure when applied to anisotropic tires are: (1) decomposition of the ...
Andersen, C. M. +2 more
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Bounds on changes in Ritz values for a perturbed invariant subspace of a Hermitian matrix
, 2008 The Rayleigh-Ritz method is widely used for eigenvalue approximation. Given a matrix $X$ with columns that form an orthonormal basis for a subspace $\X$, and a Hermitian matrix $A$, the eigenvalues of $X^HAX$ are called Ritz values of $A$ with respect to
A. V. Knyazev +4 more
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Applying WHO Prioritization Criteria for Moderate Wasting: Programmatic Implications
Maternal &Child Nutrition, Volume 22, Issue 1, March 2026.The WHO 2023 anthropometric and age‐based prioritization criteria for moderate wasting classify most of the children as high priority in a MUAC‐based enrollment protocol for wasting treatment. ABSTRACT The World Health Organization's 2023 recommendations for managing moderate wasting provide criteria for prioritizing children to receive specially ...
Isabel Potani +13 more
wiley +1 more source
Boundary conditions for augmented plane wave methods
, 2005 The augmented plane wave method uses the Rayleigh-Ritz principle for basis functions that are continuous but with discontinuous derivatives and the kinetic energy is written as a pair of gradients rather than as a Laplacian.
Brouder, Christian
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