Results 91 to 100 of about 3,864,284 (197)

The application of propensity score methods in observational studies

Frontiers in Applied Mathematics and Statistics
IntroductionIn research, it is crucial to accurately estimate treatment effects and analyze experimental results. Common methods include comparing outcome differences between different groups and using linear regression models for analysis.
Yuejuan Zhao
doaj   +1 more source

Mechanical optimization of plate-screw interfaces in variable-angle locking systems: a parametric study

Frontiers in Bioengineering and Biotechnology
IntroductionVariable-angle locking systems offer increased surgical flexibility by permitting off-axis screw insertion, with some designs allowing angulation up to 15°.
Chen-Chiang Lin, Shun-Ping Wang, Shun-Ping Wang, Kun-Jhih Lin, Ming-Hsien Hu, Ming-Hsien Hu   +5 more
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A Study of the RV Tauri Variables [PDF]

Proceedings of the National Academy of Sciences, 1942
C, Payne-Gaposchkin, V K, Brenton
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GMM Estimation for Long Memory Latent Variable Volatility and Duration Models [PDF]

We study the rate of convergence of moment conditions that have been commonly used in the literature for Generalised Method of Moments (GMM) estimation of short memory latent variable volatility models.
Willa Chen, Rohit Deo
core  

Simulation Study for Variable Selection in Quantile Regression

Wasit Journal for Pure Sciences
Six essential techniques for variable selection in quantile regression models are thoroughly examined in this work. Quantile Lasso, gamma-divergence, quantile elastic net, quantile adaptive Lasso, quantile SCAD, and quantile MCP are some of these ...
HUSSEIN HASHEM
doaj   +1 more source

Study on Nonlinear Behavior of Variable Thickness Plates

International Journal of Engineering and Management Sciences
The analysis of variable-thickness plates is much more complicated than that of uniform-thickness plates because variable coefficients occur in the equations.
Lan Hoang That Ton
doaj   +1 more source

Evaluation of Variable Advisory Speed Limits in Work Zones, TPF-5(081), 2013

, 2013
Variable advisory speed limit (VASL) systems could be effective at both urban and rural work zones, at both uncongested and congested sites. At uncongested urban work zones, the average speeds with VASL were lower than without VASL.

core  

Adaptive Rate DS-CDMA Systems using Variable Spreading Factors

, 2004
—In this contribution, adaptive rate transmissions are investigated in the context of direct-sequence code-division multiple-access (DS-CDMA) systems using variable spreading factors (VSFs).
Yang, L-L., Hanzo, L.
core  

Variable-Temperature Multinuclear Solid-State NMR Study of Oxide Ion Dynamics in Fluorite-Type Bismuth Vanadate and Phosphate Solid Electrolytes

, 2018
In this study, we employ a multinuclear, variable-temperature NMR spectroscopy approach to characterise and measure oxide ionic motion in the V- and P-substituted bismuth oxide materials Bi0.913V0.087O1.587, Bi0.852V0.148O1.648 and Bi0.852P0.148O1.648 ...
Ivana Radosavljevic Evans (6077319), Clare Grey (5740583), Matthew Dunstan (6076610), David M. Halat (5855417), Matthew Tate (6077318)   +4 more
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Variables used in the study

Globally, fourteen percent of adolescents suffer from mental health issues. Among the many contributing factors to mental health problems, parenting is considered to have a significant effect on both the physical and psychological health of adolescents.
Bhatt, Anjali, Khadka, Rabina, Thapa, Milan, Sharma, Anusha, Joshi, Manoj, Mishra, Durga Khadka   +5 more
openaire   +1 more source