Multilevel model for description of material deformation under structural superplasticity conditions: Modified kinetic equations

2018 ◽  
Author(s):  
E. R. Sharifullina ◽  
A. I. Shveykin ◽  
P. V. Trusov
Keyword(s):  
Multilevel Model ◽  
Kinetic Equations ◽  
Structural Superplasticity ◽  
Material Deformation

Modeling Intraindividual Variability in Three-Level Multilevel Models

Methodology ◽  
2018 ◽  
Vol 14 (3) ◽  
pp. 95-108 ◽  
Author(s):  
Steffen Nestler ◽  
Katharina Geukes ◽  
Mitja D. Back
Keyword(s):  
Multilevel Model ◽  
Multilevel Models ◽  
Mixed Effects ◽  
Repeated Measurements ◽  
Scale Model ◽  
Suggested Approach ◽  
Psychological Study ◽  
Level Data ◽  
Ecological Momentary ◽  
Momentary Assessment

Abstract. The mixed-effects location scale model is an extension of a multilevel model for longitudinal data. It allows covariates to affect both the within-subject variance and the between-subject variance (i.e., the intercept variance) beyond their influence on the means. Typically, the model is applied to two-level data (e.g., the repeated measurements of persons), although researchers are often faced with three-level data (e.g., the repeated measurements of persons within specific situations). Here, we describe an extension of the two-level mixed-effects location scale model to such three-level data. Furthermore, we show how the suggested model can be estimated with Bayesian software, and we present the results of a small simulation study that was conducted to investigate the statistical properties of the suggested approach. Finally, we illustrate the approach by presenting an example from a psychological study that employed ecological momentary assessment.

Employee well-being: A multilevel model linking work and family domains

2007 ◽  
Author(s):  
Kelly M. Schwind ◽  
Remus Ilies ◽  
Daniel Heller
Keyword(s):  
Multilevel Model ◽  
Well Being ◽  
Work And Family

On Kinetic Equations in Heavy-Ion Physics

1996 ◽  
Vol 21 (5) ◽  
pp. 461-502 ◽  
Author(s):  
E. Suraud
Keyword(s):  
Kinetic Equations ◽  
Heavy Ion ◽  
Heavy Ion Physics

Predictors of grit: A multilevel model examination of demographics and school experiences

2018 ◽  
Author(s):  
Dana Wanzer
Keyword(s):  
Academic Success ◽  
School Culture ◽  
Multilevel Modeling ◽  
Predictive Validity ◽  
School Engagement ◽  
Multilevel Model ◽  
School Experiences ◽  
School Level ◽  
School Demographics ◽  
And Gender

Much of the research on grit has examined its predictive validity toward academic success; however, little research has treated grit as an outcome. This study uses multilevel modeling to examine how student-level demographics, school-level demographics, and students’ experiences in school predict grit. Results demonstrate that students’ experiences in school—including school engagement, relationships with adults and peers, and school culture—and self-reported GPA were most strongly related to grit, ethnicity was weakly related to grit, and gender and school demographics did not significantly relate to grit. Implications of this research on the potential malleability of grit are discussed.

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