Results 51 to 60 of about 25,544 (263)

Moment Magnitude Homogenization Relations in the South Korean Region from 1900 to 2020

Applied Sciences, 2022
Utilizing several international and local earthquake catalogs, a set of regression models converting magnitude types typically found in the South Korean region to moment magnitude MW is presented.
Eric Yee, Wonsick Park
doaj   +1 more source

Symbolic Regression and Multi‐Objective Optimization of the Flory–Huggins Interaction Parameter for Hydrogels

Advanced Engineering Materials, EarlyView.
We develop a data‐driven method to derive the mathematical expressions of the Flory–Huggins interaction parameter χ for the swelling behavior of temperature–responsive hydrogels. Starting from initial assumptions of χ, our workflow combines Bayesian optimization, Flory–Rehner theory, and symbolic regression to generate candidate χ expressions.
Yawen Wang, Adrian Ehrenhofer, Thomas Wallmersperger   +2 more
wiley   +1 more source

Preliminary study on uniqueness of stress-strain envelope curves of sand

Yantu gongcheng xuebao
The uniqueness of the stress-strain envelope curves of sand under cyclic unloading is of great importance in understanding the inherent properties of the sand.
SHAO Longtan 1, 2 , GAO Rui 1, 2, XIA Pingxin 3, GUO Xiaoxia 1, 2, SUN Yanpu 1, 2
doaj   +1 more source

Contrasting dose response relationships of neuroactive antidepressants on the behavior of C. elegans

Ecotoxicology and Environmental Safety, 2023
Antidepressant prescriptions are on a rise worldwide and this increases the concerns for the impacts of these pharmaceuticals on nontarget organisms. Antidepressants are neuroactive compounds that can affect organism’s behavior.
Merel A. van der Most, Ignacio Miro Estruch, Nico W. van den Brink   +2 more
doaj   +1 more source

High‐Temperature Nanoindentation of Metals: Assessing Thermal Drift, Frame Compliance, and Chemical Composition Effects on the Reported Mechanical Properties

Advanced Engineering Materials, EarlyView.
Do not let thermal drift and instrument artifacts deceive high‐temperature nanoindentation results. We compare classical Oliver–Pharr and automatic image recognition analyses across steels and a Ni alloy to quantify these effects. Accounting for artifacts reveals systematic softening with temperature, while Cr and Ni additions boost resistance ...
Velislava Yonkova, Steffen Brinckmann, Ruth Schwaiger   +2 more
wiley   +1 more source

Monotone Regression and Covariance Structure

The Annals of Statistics, 1979
The monotone regression of a variable $X$ on another variable $Y$ is of particular interest when $Y$ cannot be directly observed. The correlation of $X$ and $Y$ can be tested if at least high and low values of $Y$ can be recognized. If all the components of a random vector have monotone regression on a variable $Y$, and if they are all uncorrelated ...
openaire   +2 more sources

Molecular Dynamics Studies of Shape Memory Polymers: From Bead–Spring Models to Atomistic Simulations

Advanced Engineering Materials, EarlyView.
Coarse‐grained (left) and atomistic (right) models of the shape memory polymer ESTANE ETE 75DT3 are shown schematically. The two representations bridge molecular detail and mesoscopic description. Both models capture shape memory behavior, linking segmental mobility and conformational relaxation of anisotropic chains to macroscopic recovery, and ...
Fathollah Varnik
wiley   +1 more source

Interfacial behavior of permeable polymer and concrete at joints of cross-river shield tunnels

Yantu gongcheng xuebao, 2023
Joint leakage is one of the main diseases of shield tunnels crossing rivers during operation. The bonding performance with joint concrete and commonly used grouting materials in shield tunnel engineering is poor.
WANG Yuke 1, 2, 3, LI Zhenyu 1, 2, 3, ZHONG Yanhui 1, 2, 3, YU Xiang 1, 2, 3, ZHANG Bei 1, 2, 3, FENG Dakuo 4
doaj   +1 more source

Inverse Identification of Energy‐Dependent Laser Absorptivity in NiTi Laser Powder‐Bed Fusion via Calibrated Melt Pool Simulation

Advanced Engineering Materials, EarlyView.
A combined experimental–computational framework identifies energy‐dependent laser absorptivity for NiTi in laser powder‐bed fusion, applicable to conduction and transition modes. Single‐track experiments and thermofluid smoothed particle hydrodynamics simulations are coupled through inverse analysis of melt pool geometry.
Mohamadreza Afrasiabi, Hadi Moutablaleh, Ignatius A. Setiawan, Mehrshad Mehrpouya   +3 more
wiley   +1 more source

We can make it: A probabilistic analysis on the satisfaction in flexible learning

Journal of Research, Policy & Practice of Teachers & Teacher Education, 2022
When Higher Education Institutions shifted to online learning due to COVID-19, student satisfaction significantly dropped. Study aimed to determine which of the variables significantly influenced the satisfaction in flexible learning.
Ian Saguing Somosot
doaj   +1 more source