Results 81 to 90 of about 310,979 (266)

Unobservable Selection and Coefficient Stability: Theory and Validation [PDF]

, 2013
A common heuristic for evaluating robustness of results to omitted variable bias is to look at coefficient movements after inclusion of controls. This heuristic is informative only if selection on observables is proportional to selection on unobservables.
openaire   +2 more sources

Characterization of Defect Distribution in an Additively Manufactured AlSi10Mg as a Function of Processing Parameters and Correlations with Extreme Value Statistics

Advanced Engineering Materials, EarlyView.
Predicting extreme defects in additive manufacturing remains a key challenge limiting its structural reliability. This study proposes a statistical framework that integrates Extreme Value Theory with advanced process indicators to explore defect–process relationships and improve the estimation of critical defect sizes. The approach provides a basis for
Muhammad Muteeb Butt, Varma Kvvssn, Hossein Laieghi, Zia Uddin, Peyman Ansari, E. Kıvanç Sadak, Can Barış Toprak, Hüseyin Kızıl, Enrico Salvati   +8 more
wiley   +1 more source

A Workflow to Accelerate Microstructure‐Sensitive Fatigue Life Predictions

Advanced Engineering Materials, EarlyView.
This study introduces a workflow to accelerate predictions of microstructure‐sensitive fatigue life. Results from frameworks with varying levels of simplification are benchmarked against published reference results. The analysis reveals a trade‐off between accuracy and model complexity, offering researchers a practical guide for selecting the optimal ...
Luca Loiodice, Krzysztof S. Stopka, Michael D. Sangid   +2 more
wiley   +1 more source

Scales’ validity and reliability for pain assessment. Pediatric Intensive Care Unit. Cienfuegos 2023

Medisur
Foundation: the assessment of pain requires the use of valid and reliable scales that allow identifying its presence, intensity and characteristics, for better management and treatment.Objective: to determine the scales’ validity and reliability for ...
Jayce Díaz Díaz, Ariel Efrén Uriarte Méndez, Zulema Sánchez Acosta, Yuliett Mora Pérez, Felicia Rodríguez Solís   +4 more
doaj  

A generalized DEMATEL theory with a shrinkage coefficient for an indirect relation matrix

MATEC Web of Conferences, 2017
In this paper, a novel decision-making trial and evaluation laboratory (DEMATEL) theory with a shrinkage coefficient of indirect relation matrix is proposed, and a useful validity index, called Liu’s validity index, is also proposed for evaluating the ...
Liu Hsiang-Chuan, Shia Ben-Chang, Ou Yih-Chang, Su Huan-Wen   +3 more
doaj   +1 more source

A Numerical–Experimental Approach for Multi‐Matrix Fiber‐Reinforced Plastics Characterization Using Finite Element Model Updating

Advanced Engineering Materials, EarlyView.
A numerical–experimental framework is developed for characterizing multi‐matrix fiber‐reinforced polymers (MM‐FRPs) combining epoxy and polyurethane matrices. Harmonic bending tests are integrated with finite element model updating (FEMU) to simultaneously identify elastic and viscoelastic material parameters.
Rodrigo M. Dartora, Tales V. Lisbôa, Axel Spickenheuer, Rogério J. Marczak, Jakson M. Vassoler   +4 more
wiley   +1 more source

Sinicization and reliability and validity test of the Geriatric Self⁃Efficacy Scale for Oral Health

Huli yanjiu, 2021
ObjectiveTo translate the Geriatric Self⁃Efficacy Scale for Oral Health （GSEOH） into Chinese and test its reliability and validity.MethodsAfter obtaining the author's authorization，the GSEOH was translated，back⁃translated，and culturally adjusted to form ...
XU Yuxin, WU Hongmei, MA Junchi, ZHANG Guangdong   +3 more
doaj  

Evaluating Energy Absorption Performance of Filled Lattice Structures

Advanced Engineering Materials, EarlyView.
Maximum stress must be considered to robustly evaluate energy absorber designs. This approach was applied to compare all types of absorbers in a single Ashby diagram and determine the utility of filling lattice voids with a second material. High‐performance fillers can improve the performance of lattices that are limited by buckling or catastrophic ...
Christian Bonney, William P. King, Iwona Jasiuk   +2 more
wiley   +1 more source

Content Validity of Android-Based Sport Training Program Monitor For Tennis Players

Sport i Turystyka
Tracking an athlete’s training program is crucial for objectively monitoring training activities, physical development, skill acquisition, and program adjustments.
Rivan Saghita Pratama, Sri Haryono, Abdul Hafidz, Ali Md Nadzalan, Jaffry Bin Zakaria, Teguh Santosa, Sunanto Sunanto, Agus Himawan, Nur Ahmad Muharram, Septyaningrum Putri Purwoto   +9 more
doaj   +1 more source

Rafting of Ni‐Based Superalloys Under Multiaxial Load as Understood by Phase‐Field Simulations and Critical Experiments

Advanced Engineering Materials, EarlyView.
Phase‐field simulations coupled with dislocation‐density‐based crystal plasticity modeling reproduce γ′ rafting behavior in single‐crystal Ni‐based superalloys under varied loading conditions. The model captures both macroscopic creep and microscopic morphology evolution, with results matching high‐temperature creep experiments.
Micheal Younan, David Bürger, Gunther Eggeler, Oleg Shchyglo, Ingo Steinbach, Muhammad Adil Ali   +5 more
wiley   +1 more source