Results 41 to 50 of about 306,480 (186)

A generalized preconditioned MHSS method for a class of complex symmetric linear systems

Mathematical Modelling and Analysis, 2013
Based on the MHSS (Modified Hermitian and skew-Hermitian splitting) and preconditioned MHSS methods, we will present a generalized preconditioned MHSS method for solving a class of complex symmetric linear systems.
Mehdi Dehghan, Marzieh Dehghani-Madiseh, Masoud Hajarian   +2 more
doaj   +1 more source

Time after time – circadian clocks through the lens of oscillator theory

FEBS Letters, EarlyView.
Oscillator theory bridges physics and circadian biology. Damped oscillators require external drivers, while limit cycles emerge from delayed feedback and nonlinearities. Coupling enables tissue‐level coherence, and entrainment aligns internal clocks with environmental cues.
Marta del Olmo, Carolin Ector, Hanspeter Herzel   +2 more
wiley   +1 more source

A Preconditioned Iterative Approach for Efficient Full Chip Thermal Analysis on Massively Parallel Platforms

Technologies, 2018
Efficient full-chip thermal simulation is among the most challenging problems facing the EDA industry today, especially for modern 3D integrated circuits, due to the huge linear systems resulting from thermal modeling approaches that require unreasonably
George Floros, Konstantis Daloukas, Nestor Evmorfopoulos, George Stamoulis   +3 more
doaj   +1 more source

A proposal for an instructional methodological class on iterative numerical methods for Systems of Linear Equations

Gamification and Augmented Reality
Introduction: The methodological work aimed to enhance teachers' pedagogical preparation to optimize the teaching-learning process, focusing on improving Curriculum E of Computer Science, specifically in the Numerical Mathematics course.  Methods: An instructional methodological class was designed based on previous research conducted at the Faculty of ...
Damian Valdés Santiago, Adriana Díaz Cordero   +1 more
openaire   +1 more source

In situ molecular organization and heterogeneity of the Legionella Dot/Icm T4SS

FEBS Letters, EarlyView.
We present a nearly complete in situ model of the Legionella Dot/Icm type IV secretion system, revealing its central secretion channel and identifying new components. Using cryo‐electron tomography with AI‐based modeling, our work highlights the structure, variability, and mechanism of this complex nanomachine, advancing understanding of bacterial ...
Przemysław Dutka, Yuxi Liu, Stefano Maggi, Debnath Ghosal, Jue Wang, Prashant P. Damke, Stephen D. Carter, Wei Zhao, Sukhithasri Vijayrajratnam, Joseph P. Vogel, Carrie L. Shaffer, Grant J. Jensen   +11 more
wiley   +1 more source

OpenFOAM iterative methods efficiency analysis for linear systems solving

Труды Института системного программирования РАН, 2018
Significant part of the computational work in numerical simulations of technical systems, physical phenomena and technological processes is solving of linear algebraic equations systems arising from the discretization of the corresponding differential or
I. K. Marchevsky, V. V. Puzikova
doaj  

Low-Complexity Numerical Approach for the Diffusion Equation with Variable Diffusion Coefficient

Mathematics
The diffusion equation models a wide variety of physical and chemical processes and has significant interest in many scientific disciplines. Analytical and numerical methods found in the literature for solving the diffusion equation consider a constant ...
Marta Zárraga-Rodríguez, Patricio Fuentes, Xabier Insausti   +2 more
doaj   +1 more source

A numerical evaluation of preprocessing and ILU-type preconditioners for the solution of unsymmetric sparse linear systems using iterative methods

ACM Transactions on Mathematical Software, 2009
Recent advances in multilevel LU factorizations and novel preprocessing techniques have led to an extremely large number of possibilities for preconditioning sparse, unsymmetric linear systems for solving with iterative methods. However, not all combinations work well for all systems, so making the right choices is essential for obtaining an efficient ...
openaire   +2 more sources

Order reduction approaches for the algebraic Riccati equation and the LQR problem

, 2017
We explore order reduction techniques for solving the algebraic Riccati equation (ARE), and investigating the numerical solution of the linear-quadratic regulator problem (LQR).
A Alla, B Kramer, D Kleinman, H Barkouki, IM Jaimoukha, IM Jaimoukha, J Atwell, J Borggaard, K Jbilou, K Kunisch, K Kunisch, M Falcone, M Heyouni, MH Gutknecht, P Benner, P Benner, P Benner, P Benner, P Benner, P Braun, P Lancaster, S Volkwein, V Druskin, V Simoncini, V Simoncini, V Simoncini, Y Lin, Y Lin   +27 more
core   +1 more source

Structural insights into an engineered feruloyl esterase with improved MHET degrading properties

FEBS Letters, EarlyView.
A feruloyl esterase was engineered to mimic key features of MHETase, enhancing the degradation of PET oligomers. Structural and computational analysis reveal how a point mutation stabilizes the active site and reshapes the binding cleft, expading substrate scope.
Panagiota Karampa, Konstantinos Makryniotis, Theofani‐Iosifina Sousani, Evangelos Topakas, Vangelis Daskalakis, Maria Dimarogona   +5 more
wiley   +1 more source