Results 101 to 110 of about 1,838,692 (271)
Quarterly Journal of the Royal Meteorological Society, EarlyView.The Weak‐Constraint Four‐Dimensional Variational (WC‐4DVAR) system markedly improved the analysis and forecasting of the 2024 sudden stratospheric warming (SSW) event. It reduced biases and enhanced 7–9 day predictions of temperature across the SSW life cycle, with the most pronounced gains for winds also during the critical onset period.
Shaoying Li +5 more
wiley +1 more source
Space-time adaptive solution of inverse problems with the discrete adjoint method [PDF]
, 2010 Adaptivity in both space and time has become the norm for solving problems modeled by partial differential equations. The size of the discretized problem makes uniformly refined grids computationally prohibitive.
Adrian, Sandu, Alexe, Mihai
core +1 more source
Evaluation and assimilation of Arctic Weather Satellite data in the AROME‐Arctic forecast system
Quarterly Journal of the Royal Meteorological Society, EarlyView.The Arctic Weather Satellite (AWS), launched in August 2024, is a prototype for the future EPS–Sterna constellation of small satellites carrying an innovative microwave sounder. We present the first assessment of AWS in the regional AROME‐Arctic numerical weather prediction system, covering post‐launch calibration results and the impact of AWS ...
Stéphanie Guedj +2 more
wiley +1 more source
Digital EngineeringAdvances in deep learning have impacted all areas of business, government and academia, and deep learning is expanding into domains that are beyond the scope of the standard Computer Science curriculum.
Joseph M. Worsham, Jugal K. Kalita
doaj +1 more source
Reflexivity, the dual Radon-Nikodym property, and continuity of adjoint semigroups II
Indagationes Mathematicae, 1990 The author continues his investigation [see the same journal 1, No. 3, 365-380 (1990; Zbl 0728.46019)] on the relations between the behaviour of a \(C_ 0\)-semigroup \(T(t)\) and the structure of the underlying Banach space \(X\). He proves that if \(X\) fails to have Radon-Nikodym property then \(X^{\odot *}/X\) is nonseparable and if \(X^*\) lacks ...
openaire +3 more sources
Enhancing severe convection forecasts with microwave radiance assimilation in limited‐area models
Quarterly Journal of the Royal Meteorological Society, EarlyView.Microwave satellite radiances remain largely underexploited in convection‐permitting limited‐area models. We assess the assimilation of humidity‐sensitive radiances from the MHS instrument in the operational ICON‐2I model, improving the precipitation forecast of a severe convective event over the Marche region, Italy, substantially by correcting ...
Marcello Grenzi +5 more
wiley +1 more source
Accounting Perspectives, EarlyView.ABSTRACT The transition from doctoral student to tenure‐track assistant professor marks a critical juncture in an academic career. This conceptual commentary offers experience‐based insights for early‐career accounting faculty, addressing the distinct pressures of a discipline shaped by professional certification requirements, diverse institutional ...
Seda Oz, Steve Fortin, Christopher Wong
wiley +1 more source
Dependence of eigenvalues of 2mth-order spectral problems
Boundary Value Problems, 2017 A regular 2mth-order spectral problem with self-adjoint boundary conditions is considered in this paper. The continuous dependence of eigenvalues and normalized eigenfunctions on the problem is researched.
Zhaowen Zheng, Yujuan Ma
doaj +1 more source
The computation of eigenvalues and eigenvector of a completely continuous self-adjoint operator
Journal of Computer and System Sciences, 1967 AbstractIf A is a completely continuous self-adjoint operator on a Hilbert space its eigenvalues are the values of the inner product at stationary points on the unit sphere. Gradient procedures can be used to determine eigenvectors and eigenvalues provided that certain regularity conditions hold at the eigenvectors.
openaire +2 more sources
Hierarchical Differentiable Fluid Simulation
Computer Graphics Forum, EarlyView.We introduce a two‐step algorithm that significantly reduces memory usage for solving control problems using differentiable fluid simulation techniques: our method first optimizes for bulk forces at reduced resolution, then refines local details over sub‐domains while maintaining differentiability. In trading runtime for memory, it enables optimization
Xiangyu Kong +4 more
wiley +1 more source