Results 141 to 150 of about 554,064 (360)

Convergence properties of dynamic mode decomposition for analytic interval maps

Communications on Pure and Applied Mathematics, EarlyView.
Abstract Extended dynamic mode decomposition (EDMD) is a data‐driven algorithm for approximating spectral data of the Koopman operator associated to a dynamical system, combining a Galerkin method with N$N$ functions and a quadrature method with M$M$ quadrature nodes.
Elliz Akindji, Julia Slipantschuk, Oscar F. Bandtlow, Wolfram Just   +3 more
wiley   +1 more source

Randomly sparsified Richardson iteration: A dimension‐independent sparse linear solver

Communications on Pure and Applied Mathematics, EarlyView.
Abstract Recently, a class of algorithms combining classical fixed‐point iterations with repeated random sparsification of approximate solution vectors has been successfully applied to eigenproblems with matrices as large as 10108×10108$10^{108} \times 10^{108}$. So far, a complete mathematical explanation for this success has proven elusive.
Jonathan Weare, Robert J. Webber
wiley   +1 more source

Dimer models and conformal structures

Communications on Pure and Applied Mathematics, EarlyView.
Abstract Dimer models have been the focus of intense research efforts over the last years. Our paper grew out of an effort to develop new methods to study minimizers or the asymptotic height functions of general dimer models and the geometry of their frozen boundaries.
Kari Astala, Erik Duse, István Prause, Xiao Zhong   +3 more
wiley   +1 more source

Active Positive-Definite Matrix Completion

SDM, 2017
Charalampos Mavroforakis, D. Erdös, M. Crovella, Evimaria Terzi   +3 more
semanticscholar   +1 more source

Challenges, models, and algorithms for flow and transport simulations in deep reservoirs

Deep Underground Science and Engineering, EarlyView.
Deep reservoirs are considered a promising resource for future energy supply, but current reservoir simulation technologies may face certain challenges if they are directly used in specific scenarios in deep reservoir development. Models and algorithms were developed to resolve these challenges, including a better phase equilibrium model, a better ...
Tao Zhang, Jie Liu, Shuyu Sun
wiley   +1 more source

Probability prediction of true‐triaxial compressive strength of intact rocks based on the improved PSO‐RVM model

Deep Underground Science and Engineering, EarlyView.
In this work, we propose an improved particle swarm optimization (PSO) algorithm and develop an improved PSO‐relevance vector machine (RVM) model as a substitute for traditional true‐triaxial testing. The model's high prediction accuracy was validated through comparisons with two other machine learning methods and five three‐dimensional Hoek–Brown type
Qi Zhang, Maohui Wang, Ning Wang, Yixin Shen, Xuzhen He   +4 more
wiley   +1 more source

Aggregating distributed energy resources for grid flexibility services: A distributed game theoretic approach

International Journal of Robust and Nonlinear Control, EarlyView., 2023
Abstract We propose a hierarchical energy management scheme for aggregating Distributed Energy Resources (DERs) for grid flexibility services. To prevent a direct participation of numerous prosumers in the wholesale electricity market, aggregators, as self‐interest agents in our scheme, incentivize prosumers to provide flexibility. We firstly model the
Xiupeng Chen, Mehran Shakarami, Jacquelien M. A. Scherpen, Nima Monshizadeh   +3 more
wiley   +1 more source

A two-sided iterative method for computing positive definite solutions of a nonlinear matrix equation [PDF]

, 2003
Salah M. El‐Sayed
openalex   +1 more source

The in‐hospital administration of sacubitril/valsartan in acute myocardial infarction: A meta‐analysis

ESC Heart Failure, Volume 12, Issue 2, Page 998-1012, April 2025.
In patients with Acute Myocardial Infarction related heart failure, the in‐hospital administration of ARNIs was associated with a reduced risk of MACEs and re‐hospitalizations for heart failure, as well as cardiac remodeling, compared to standard therapy.
Gianluca Di Pietro, Riccardo Improta, Paolo Severino, Andrea D'Amato, Lucia Ilaria Birtolo, Ovidio De Filippo, Antonio Lattanzio, Raffaele De Cristofaro, Giacchino Galardo, Fabrizio D'Ascenzo, Roberto Badagliacca, Gennaro Sardella, Maurizio Volterrani, Francesco Fedele, Carmine Dario Vizza, Massimo Mancone   +15 more
wiley   +1 more source

Prognostic significance of somatic mutations in myeloid cells of men with chronic heart failure – interaction between loss of Y chromosome and clonal haematopoiesis

European Journal of Heart Failure, EarlyView.
Abstract Aims Age‐associated clonal haematopoiesis of indeterminate potential (CHIP) has been linked to increased incidence and worse prognosis of chronic heart failure (CHF). CHIP arises from somatic mutations in haematopoietic stem and progenitor cells. Mosaic loss of Y chromosome (LOY), the most common somatic mutation in male blood cells, increases
Sebastian Cremer, Moritz von Scheidt, Klara Kirschbaum, Lukas Tombor, Silvia Mas‐Peiro, Wesley Abplanalp, Tina Rasper, Akshay Ware, Andrin Schuff, Alexander Berkowitsch, Johannes Krefting, David Leistner, Heribert Schunkert, Thimoteus Speer, Stefanie Dimmeler, Andreas Michael Zeiher   +15 more
wiley   +1 more source