Results 61 to 70 of about 31,846 (223)

1165. Echinacea purpurea (L.) Moench

open access: yesCurtis's Botanical Magazine, EarlyView.
Summary Echinacea purpurea (L.) Moench (Compositae: Heliantheae: Zinniinae) is described and illustrated with a colour plate and black and white text figure. An introduction to the history of the appearance of this species in the Magazine appears in brief, together with comments on the treatment of the genus, and the available generic revisions.
Nicholas Hind   +2 more
wiley   +1 more source

Pollution Permits and Financing Costs

open access: yesJournal of Money, Credit and Banking, EarlyView.
Abstract Effective environmental policy should consider how the financiers of polluting firms behave. We study phase III of the EU Emission Trading System. Loan spreads for cap‐and‐trade participants are a function of compliance costs, permit market features, and firms’ strategic actions.
FABIO ANTONIOU   +3 more
wiley   +1 more source

Multiobjective design optimization of a quadrupole resonator under uncertainties

open access: yesPhysical Review Accelerators and Beams, 2022
For a precise determination of the rf properties of superconducting materials, a calorimetric measurement is carried out with the aid of a so-called quadrupole resonator (QPR).
Piotr Putek   +3 more
doaj   +1 more source

Distributional uncertainty analysis using polynomial chaos expansions [PDF]

open access: yes2010 IEEE International Symposium on Computer-Aided Control System Design, 2010
A computationally efficient approach is presented that quantifies the influence of parameter uncertainties on the states and outputs of finite-time control trajectories for nonlinear systems, based on the approximate representation of the model via polynomial chaos expansion.
Zoltan K. Nagy, Richard D. Braatz
openaire   +1 more source

Uncertainty quantification via polynomial chaos expansion of myocardial fibre orientation and cardiac activation patterns

open access: yesThe Journal of Physiology, EarlyView.
Abstract figure legend Graphical representation of methods. We implemented three biventricular geometric models (Zenger et al., 2020) with rule‐based myocardial fibre orientations (Bayer et al., 2018). We evaluated variability in the fibre orientation via four sets of parameter distributions to determine the role of the primary and imbrication angles ...
Lindsay C. R. Tanner   +8 more
wiley   +1 more source

Stochastic Optimization using Polynomial Chaos Expansions

open access: yes, 2020
Polynomial chaos based methods enable the efficient computation of output variability in the presence of input uncertainty in complex models. Consequently, they have been used extensively for propagating uncertainty through a wide variety of physical systems.
openaire   +2 more sources

Interval Uncertainty Analysis for Wheel–Rail Contact Load Identification Based on First-Order Polynomial Chaos Expansion

open access: yesMathematics
Traditional methods for identifying wheel–rail contact loads are based on deterministic models, in which the uncertainties such as material inhomogeneity and geometric tolerance are not considered. For wheel–rail contact load analysis with uncertainties,
Shengwen Yin, Haotian Xiao, Lei Cao
doaj   +1 more source

Non-intrusive uncertainty quantification in structural-acoustic systems using polynomial chaos expansion method

open access: yesMATEC Web of Conferences, 2017
A framework of non-intrusive polynomial chaos expansion method (PC) was proposed to investigate the statistic characteristics of the response of structural-acoustic system containing random uncertainty.
Wang Mingjie   +4 more
doaj   +1 more source

Sensitivity Analysis of an Implanted Antenna within Surrounding Biological Environment

open access: yesEnergies, 2020
The paper describes the sensitivity analysis of a wireless power transfer link involving an implanted antenna within the surrounding biological environment. The approach combines a 3D electromagnetic modeling and a surrogate model (based polynomial chaos
Shuoliang Ding, Lionel Pichon
doaj   +1 more source

General polynomial chaos‐based expansion finite‐difference time‐domain method for analysing electromagnetic wave propagation in random dispersive media

open access: yesIET Microwaves, Antennas & Propagation, 2021
A new approach for using polynomial chaos‐based expansion finite‐difference time‐domain (PCE‐FDTD) is presented to calculate the uncertainty of electromagnetic wave propagation in dispersive materials.
Jiangfan Liu, Huiping Li, Xiaoli Xi
doaj   +1 more source

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