Results 111 to 120 of about 324,327 (273)

New Quasi-Newton (Dfp) With Logistic Mapping

Science Journal of University of Zakho, 2016
In this paper, we propose a modification of the self-scaling quasi-Newton (DFP) method for unconstrained optimization using logistic mapping. We shoe that it produces a positive definite matrix.
Salah G. Shareef, Bayda G. Fathi
doaj  

Voting in Ruins: Examining the Effect of a Tornado on Voting Behavior Toward Coalition Government Parties

Economics &Politics, EarlyView.
ABSTRACT The electoral effects of natural disasters have gained increasing importance in recent research. This paper analyzes the impact of an unprecedentedly strong tornado on the electoral results of coalition government parties in the 2021 Czech general election.
Jakub Jusko, Peter Spáč
wiley   +1 more source

Convergence and Stability Improvement of Quasi-Newton Methods by Full-Rank Update of the Jacobian Approximates

AppliedMath
A system of simultaneous multi-variable nonlinear equations can be solved by Newton’s method with local q-quadratic convergence if the Jacobian is analytically available.
Peter Berzi
doaj   +1 more source

Numerical Modeling of Hydrogen‐Assisted Cracking With Phase Field Regularized Cohesive Zone Model and Penalty‐Based Moving Hydrogen Boundary Condition

Fatigue &Fracture of Engineering Materials &Structures, EarlyView.
ABSTRACT The degradation of metallic materials due to hydrogen embrittlement (HE) poses critical challenges for structural reliability. Phase‐field models offer an energy‐based approach that does not require predefined crack paths and automatically determines crack initiation, growth, and coalescence.
Shaymaa Merheb, Dmytro Vasiukov, Modesar Shakoor, Hugo Heyraud, Daniella Guedes Sales, Philippe Rohart, Samir Assaf, Salim Chaki   +7 more
wiley   +1 more source

The Effect of Listening Strategy Intervention on the Development of Young Learners’ L2 Listening Skills

International Journal of Applied Linguistics, EarlyView.
ABSTRACT The impact of strategy intervention on second language (L2) listening development has been explored in various contexts; however, research on both implicit and explicit listening strategy interventions for young learners remains limited.
Pelin Irgin, Munevver Ilgun‐Dibek
wiley   +1 more source

Inshore marine coastal zone migration patterns in Atlantic salmon post‐smolts emigrating from eight rivers in north‐east Scotland

Journal of Fish Biology, EarlyView.
Abstract Atlantic salmon, Salmo salar, migrate through multiple habitat types, each having the potential to impact differently upon migration success. The inshore marine coastal zone is arguably disproportionately impacted by potential stressors on populations.
Colin E. Adams, Ruaidhri Forrester, Matthew Newton, Angus J. Lothian, Hannele M. Honkanen, Davide Thambithurai, Lorna Wilkie, Melanie A. Smith, Marcus Walters, Richard Miller, Karen Muller, Brian Shaw, Steve Burns, Chris Conroy, Chris Daphne, Robert Laughton, Mirella Toth, Keith Williams, Sean Robertson, Ross Glover, Ben Seaman, Martyn C. Lucas, Louise Chavarie, Jessica R. Rodger   +23 more
wiley   +1 more source

Heterogeneity in Manufacturing Growth Risk

Journal of Money, Credit and Banking, EarlyView.
Abstract We analyze differences in output growth risk with respect to financial conditions across U.S. manufacturing industries. Using a multilevel quantile regression approach, we find that industries exhibit heterogeneous increases of downside risk in times of tight financial conditions, while upside potential remains stable.
DAAN OPSCHOOR, DICK VAN DIJK, PHILIP HANS FRANSES   +2 more
wiley   +1 more source

Morphology and osteo‐histology of the weigeltisaurid wing: Implications for aerial locomotion in the world's first gliding reptiles

Journal of Anatomy, EarlyView.
This study investigates the morphology and osteo‐histology of the wing skeleton of the world's first gliding reptiles, showing how it differs from those of extant gliding lizards, yet is also convergently similar. These findings pave the way for future biomechanical studies on the gliding locomotion of these emblematic fossil animals. Abstract The Late
Valentin Buffa, Jordan Gônet, Thomas van de Kamp, Marcus Zuber, Marc Girondot, Eberhard Frey, J.‐Sébastien Steyer, Michel Laurin   +7 more
wiley   +1 more source

Properties and Application of Incomplete Orthogonalization in the Directions of Gradient Difference in Optimization Methods

Mathematics
This paper considers the problem of unconstrained minimization of smooth functions. Despite the high efficiency of quasi-Newton methods such as BFGS, their performance degrades in ill-conditioned problems with unstable or rapidly varying Hessians—for ...
Vladimir Krutikov, Elena Tovbis, Svetlana Gutova, Ivan Rozhnov, Lev Kazakovtsev   +4 more
doaj   +1 more source

Quasi-Newton Methods for Real-Time Simulation of Hyperelastic Materials

TOGS, 2017
Tiantian Liu, Sofien Bouaziz, L. Kavan
semanticscholar   +1 more source