Results 201 to 210 of about 449,317 (315)

Grain Refinement During Severe Plastic Deformation and Similitude of Subgrain Formation: A Molecular Dynamics Study

open access: yesAdvanced Engineering Materials, EarlyView.
Molecular dynamics is used to investigate structure refinement during severe plastic deformation. The results show similitude with experimental data. Molecular dynamics simulations of severe plastic deformation of monocrystalline and polycrystalline samples by multiaxial compression of aluminum are carried out.
Roberto B. Figueiredo
wiley   +1 more source

Extreme Value Index Estimators and Smoothing Alternatives: A Critical Review

open access: yes
Extreme-value theory and corresponding analysis is an issue extensively applied in many different fields. The central point of this theory is the estimation of a parameter γ, known as the extreme-value index. In this paper we review several extreme-value
Panaretos, John, Tsourti, Zoi
core  

Extreme Value at Risk and Expected Shortfall during Financial Crisis [PDF]

open access: yes
This paper investigates Value at Risk and Expected Shortfall for CAC 40, S&P 500, Wheat and Crude Oil indexes during the 2008 financial crisis. We show an underestimation of the risk of loss for the unconditional VaR models as compared with the ...
D. Dupre   +3 more
core  

Signatures of Extreme Events in Cumulative Entropic Spectrum. [PDF]

open access: yesEntropy (Basel)
Drzazga-Szczȩśniak EA   +8 more
europepmc   +1 more source

Effects of extreme events on land-use-related decisions of farmers in Eastern Austria: the role of learning. [PDF]

open access: yesAgron Sustain Dev, 2023
Egger C   +7 more
europepmc   +1 more source

Enhancing Low‐Temperature Performance of Sodium‐Ion Batteries via Anion‐Solvent Interactions

open access: yesAdvanced Functional Materials, EarlyView.
DOL is introduced into electrolytes as a co‐solvent, increasing slat solubility, ion conductivity, and the de‐solvent process, and forming an anion‐rich solvent shell due to its high interaction with anion. With the above virtues, the batteries using this electrolyte exhibit excellent cycling stability at low temperatures. Abstract Sodium‐ion batteries
Cheng Zheng   +7 more
wiley   +1 more source

Measuring Financial Risk using Extreme Value Theory: evidence from Pakistan

open access: yes
The purpose of the paper is to show some methods of extreme value theory through analysis of Pakistani nancial data. It also in- troduced the fundamental of extreme value theory as well as practical aspects for estimating and assessing nancial models for
Nawaz, Faisal, Qayyum, Abdul
core  

Stretching the Printability Metric in Direct‐Ink Writing with Highly Extensible Yield‐Stress Fluids

open access: yesAdvanced Functional Materials, EarlyView.
This study introduces “drawability” as a new metric for assessing printability in direct‐ink writing, focusing on gap‐spanning performance and speed robustness. By designing yield‐stress fluids with high extensibility, we demonstrate that extensional strain‐to‐break significantly enhances printability.
Chaimongkol Saengow   +9 more
wiley   +1 more source

MODELING MULTIVARIATE CROP YIELD DENSITIES WITH FREQUENT EXTREME EVENTS

open access: yes
Measuring the lower tail of a crop yield distribution is important for managing agricultural production risk and rating crop insurance. Common parametric techniques encounter difficulties when attempting to model extreme yield events.
Chen, Shu-Ling, Miranda, Mario J.
core  

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