Results 61 to 70 of about 184,147 (237)

Generalized Tikhonov regularization method for an inverse boundary value problem of the fractional elliptic equation

Boundary Value Problems
This research studies the inverse boundary value problem for fractional elliptic equation of Tricomi–Gellerstedt–Keldysh type and obtains a condition stability result.
Xiao Zhang
doaj   +1 more source

A Type of Multigrid Method Based on the Fixed-Shift Inverse Iteration for the Steklov Eigenvalue Problem

Advances in Mathematical Physics, 2016
For the Steklov eigenvalue problem, we establish a type of multigrid discretizations based on the fixed-shift inverse iteration and study in depth its a priori/a posteriori error estimates.
Feiyan Li, Hai Bi
doaj   +1 more source

Accelerating the prioritisation of plant species with underexplored medicinal potential: The pm4mp (Phylogenetic Methods for Medicinal Plants) R package

PLANTS, PEOPLE, PLANET, EarlyView.
Medicinal plants used in ethnobotanical traditions to treat or prevent diseases have gained renewed interest for their largely untapped potential in drug discovery. In this study, we developed and tested novel methods to prioritise plant species based on their unexplored medicinal potential. By enabling researchers to target the most promising species,
Giovanni Zecca, Elisa Toini, Massimo Labra, Fabrizio Grassi   +3 more
wiley   +1 more source

Applicability of Kerker preconditioning scheme to the self-consistent density functional theory calculations of inhomogeneous systems

, 2018
Kerker preconditioner, based on the dielectric function of homogeneous electron gas, is designed to accelerate the self-consistent field (SCF) iteration in the density functional theory (DFT) calculations.
Gao, Xingyu, Liu, Yu, Song, Haifeng, Wang, Han, Zhou, Yuzhi   +4 more
core   +1 more source

Forecast verification using information and noise

Quarterly Journal of the Royal Meteorological Society, EarlyView.
Verification of weather forecasts is usually expressed in terms of total error metrics. This is useful for end users of the forecasts but does not allow evaluation of the intrinsic information content of the forecasts. To overcome this limitation, we propose a new total error decomposition into information and noise error measures, connect it to ...
Massimo Bonavita, Alan J. Geer
wiley   +1 more source

Are we misdiagnosing ensemble forecast reliability? On the insufficiency of spread–error and rank‐based reliability metrics

Quarterly Journal of the Royal Meteorological Society, EarlyView.
We demonstrate that the spread–error relationship, rank histogram, and continuous rank probability score reliability component can falsely indicate reliability under climatological variance biases, yielding ensemble members that are overly or insufficiently extreme.
Arlan Dirkson, Mark Buehner
wiley   +1 more source

Addressing Biases in Ice Jam Observations by Integrating Multi‐Source Data in a Forested Fluvial Landscape, Southern Quebec

River Research and Applications, EarlyView.
ABSTRACT Exhaustive long‐term and large‐scale ice jam records are scarce in most cold river environments. Many discrete events occur in small, sparsely populated river systems and are poorly represented in open‐source databases. These observation biases are transferred to predictive models of ice jams and the collective understanding of their formation
Lisane Arsenault‐Boucher, Étienne Boucher, Rachid Lhissou, Karem Chokmani, Christophe Kinnard   +4 more
wiley   +1 more source

Numerical Computations with H(div)-Finite Elements for the Brinkman Problem

, 2011
The H(div)-conforming approach for the Brinkman equation is studied numerically, verifying the theoretical a priori and a posteriori analysis in previous work of the authors. Furthermore, the results are extended to cover a non-constant permeability.
A Hannukainen, B Cockburn, BM Fraejis de Veubeke, C D’Angelo, C Lovadina, D Braess, DN Arnold, E Burman, E Burman, E Burman, E Burman, E Gekeler, F Brezzi, F Brezzi, G Allaire, G Allaire, G Kanschat, J Könnö, J Könnö, J-C Nédélec, Juho Könnö, KA Mardal, KR Rajagopal, M Griebel, M Juntunen, MA Christie, O Iliev, P Hansbo, P Popov, R Stenberg, Rolf Stenberg, T Arbogast, T Kaya, X Xie, X Xu   +34 more
core   +1 more source

Experimental and theoretical investigation of longitudinal tunnel lining joints with confining reinforcement

Structural Concrete, EarlyView.
Abstract Precast reinforced concrete segmental linings are frequently used in modern tunneling. In these linings, the longitudinal joints typically have a reduced contact cross‐section and thus often govern the design, particularly in tunnels under high hydrostatic pressure or crossing squeezing or swelling ground with correspondingly high ...
Fabian Morger, Albin Kenel, Walter Kaufmann   +2 more
wiley   +1 more source

Proactive unmanned aerial systems cybersecurity analysis: combining a priori – a posteriori IMECA and penetration testing methods

Радіоелектронні і комп'ютерні системи
The subject of this study is the proactive cybersecurity analysis process of Unmanned Aerial Systems (UAS). The goal of this study is to reduce cybersecurity risks in UAS operations by developing a proactive analysis method that combines systematic risk ...
Artem Abakumov, Vyacheslav Kharchenko, Peter Popov   +2 more
doaj   +1 more source