Results 101 to 110 of about 11,014,330 (212)

Accurate approximations to eigenpairs using the harmonic Rayleigh Ritz Method [PDF]

, 2001
The problem in this paper is to construct accurate approximations from a subspace to eigenpairs for symmetric matrices using the harmonic Rayleigh-Ritz method.
Sleijpen, G.L.G., Eshof, J. van den
core   +1 more source

Polynomial Preconditioning for Indefinite Matrices

Numerical Linear Algebra with Applications, Volume 33, Issue 5, October 2026.
ABSTRACT Polynomial preconditioning is an important tool in solving large linear systems and eigenvalue problems. A polynomial from GMRES can be used to precondition restarted GMRES and restarted Arnoldi. Here we give methods for indefinite matrices that make polynomial preconditioning more generally applicable. The new techniques include balancing the
Hayden Henson, Ronald B. Morgan
wiley   +1 more source

The Lord of the Rings: Cysteine bonds crosslink the tail of siphovirus

Protein Science, Volume 35, Issue 10, October 2026.
Abstract Long, non‐contractile tails composed of helical hexameric protein repeats that assemble into continuous tubular structures characterize siphoviruses. The siphovirus tail tube protein gp39 contains two cysteine residues per monomer. Cryo‐electron microscopy revealed that these cysteines are oriented toward the interface between the rings, which
Simona Povilonienė, Giedrius Sasnauskas, Giedrė Tamulaitienė, Greta Labutytė, Martynas Talaikis, Algirdas Mikšys, Aurelija Zajančkauskaitė, Lidija Truncaitė, Rolandas Meškys, Vida Časaitė   +9 more
wiley   +1 more source

Revisiting the Association of Pesticide Exposure and Parkinson's Disease: Systematic Review and Meta‐Analysis

Environmental Toxicology, Volume 41, Issue 10, Page 875-888, October 2026.
ABSTRACT The association between pesticide exposure and Parkinson's disease (PD) is substantial, but heterogeneity in methodology and lack of categorization according to the type of exposure and pesticide classes in previous meta‐analyses impair the interpretation of data. This study aims to update evidence of the association between pesticide exposure
Pedro Henrique Passos da Silva, Jadson Silva Abreu, Rafael Sidônio Gibson Gomes, Hemengella Karyne Alves Oliveira, Artur F. S. Schuh, Ignacio F. Mata, Bruno Lopes Santos‐Lobato   +6 more
wiley   +1 more source

The Iterated Ritz Method: Basis, implementation and further development

, 2018
The Ritz method is known as very successful strategy for discretizing continuous problems, but it has never been used for solving systems of algebraic equations.
Uroš, Mario, Lazarević, Damir, Dvornik, Josip, Šavor Novak, Marta   +3 more
core   +2 more sources

Acoustic radiation characteristics of FG cylindrical shell based on Jacobi-Ritz modified boundary element method

Journal of Low Frequency Noise, Vibration and Active Control
In this paper, a semi-analytic method based on Jacobi-Ritz modified boundary element is proposed to solve the acoustic radiation response of functionally graded cylindrical shell.
Jiajun Zheng, Yuhang Tang, Haichao Li, Zhe Zhao, Fuzhen Pang, Cong Gao   +5 more
doaj   +1 more source

Prediction of Time Domain Vibro-Acoustic Response of Conical Shells Using Jacobi–Ritz Boundary Element Method

Acoustics
Considering the lack of studies on the transient vibro-acoustic properties of conical shell structures, a Jacobi–Ritz boundary element method for forced vibro-acoustic behaviors of structure is proposed based on the Newmark-β integral method and the ...
Cong Gao, Jiajun Zheng, Fuzhen Pang, Jiawei Xu, Haichao Li, Jibing Yan   +5 more
doaj   +1 more source

The Bureaucratic Paradox of Citizen Agency: Institutional Crowding‐Out in Government‐Catalyzed Co‐Production in Shanghai, China

Governance, Volume 39, Issue 4, December 2026.
ABSTRACT Public service co‐production is often framed as a means of creating public value, yet its dynamics are complex when citizen‐led participation is catalyzed by strong public institutions. This mixed‐methods study examines government‐catalyzed, citizen‐centric co‐production in Shanghai, China, where the state provides institutional support ...
Huanming Wang, Xiaoyun Sun, Bing Ran
wiley   +1 more source

Thermotolerance thresholds of the photosystem II increase with elevation in conifer species in the Spanish Pyrenees

Plant Biology, Volume 28, Issue 6, Page 2142-2146, October 2026.
In vitro‐tested photosystem II thermotolerance of seven temperate conifers indicated higher thermal thresholds in species growing in high elevations compared to those in the lowlands. Higher thermotolerance might be explained by the adaptation of species in higher elevations to extreme diurnal temperature fluctuations.
N. Kunert, E. Düsterhöft
wiley   +1 more source

Erste Hinweise auf Ozonido‐TMC‐Komplexe von Eisen und Kobalt

Angewandte Chemie, Volume 138, Issue 37, 7 September 2026.
Die Umsetzung der Eisen(II)‐Komplexe [(TMC)Fe(OTf)]BArF und [(D12‐TMC)Fe(OTf)]BArF sowie der Kobalt(II)‐Komplexe [(TMC)Co(OTf)]BArF und [(D12‐TMC)Co(X)]BArF (X = OTf, F) mit Ozon führt in einem 4:1‐Gemisch aus 2‐Me‐THF und THF bei Temperaturen bis −155°C zur Bildung von Ozonido‐ und Oxido‐Komplexen.
Stefan Schaub, Dennis Gerbig, Raffael C. Wende, Heike Hausmann, Jonathan Becker, Christian Würtele, Laura Senft, Ina Kellner, Gunasekaran Velmurugan, Marion Kerscher, Ivana Ivanović‐Burmazović, Peter Comba, Joshua Telser, Peter R. Schreiner, Siegfried Schindler   +14 more
wiley   +1 more source