Results 41 to 50 of about 640,764 (331)

Well-posedness of the fully coupled quasi-static thermo-poro-elastic equations with nonlinear convective transport [PDF]

, 2018
This paper is concerned with the analysis of the quasi-static thermo-poroelastic model. This model is nonlinear and includes thermal effects compared to the classical quasi-static poroelastic model (also known as Biot's model).
Ahmed, Elyes, Brun, Mats K., Nordbotten, Jan Martin, Radu, Florin A.   +3 more
core   +2 more sources

Evaluation of Different Calibration Approaches for Merchantable Volume Predictions of Norway Spruce Using Nonlinear Mixed Effects Model

, 2019
Research Highlights: Determination of merchantable wood volume is one of the key preconditions for sustainable forest management. This study explores accuracy of calibrated predictions of merchantable wood volume of Norway spruce (Picea abies (L.) H ...
Z. Adamec, Radim Adolt, K. Drápela, Jiří Závodský   +3 more
semanticscholar   +1 more source

A Nonlinear Mixed-Effects Height-to-Diameter Ratio Model for Several Tree Species Based on Czech National Forest Inventory Data

Forests, 2019
Height-to-diameter at breast height (DBH) ratio (HDR) is an important tree and stand stability measure. Several factors such as stand dynamics, natural and anthropogenic disturbances, and silvicultural tending significantly affect HDR, and, therefore, in-
R. Sharma, Z. Vacek, S. Vacek, M. Kučera   +3 more
semanticscholar   +1 more source

Determination of optimal tree height models and calibration designs for Araucaria araucana and Nothofagus pumilio in mixed stands affected to different levels by anthropogenic disturbance in South-Central Chile

Annals of Forest Science, 2023
Key message Here, we present a workflow for determining the optimal tree height model and calibration design for forests affected to varying degrees by anthropogenic disturbance.
Xinying Zhou, Erico Kutchartt, Jaime Hernández, Patricio Corvalán, Álvaro Promis, Martin Zwanzig   +5 more
doaj   +1 more source

Longitudinal nonlinear mixed effects modeling of EGFR mutations in ctDNA as predictor of disease progression in treatment of EGFR‐mutant non‐small cell lung cancer

Clinical and Translational Science, 2022
Correlations between increasing concentrations of circulating tumor DNA (ctDNA) in plasma and disease progression have been shown. A nonlinear mixed effects model to describe the dynamics of epidermal growth factor receptor (EGFR) ctDNA data from ...
J. Janssen, R. Verheijen, T. T. van Duijl, Lishi Lin, M. M. van den Heuvel, J. Beijnen, N. Steeghs, D. van den Broek, A. Huitema, T. Dorlo   +9 more
semanticscholar   +1 more source

Most Likely Separation of Intensity and Warping Effects in Image Registration

, 2017
This paper introduces a class of mixed-effects models for joint modeling of spatially correlated intensity variation and warping variation in 2D images. Spatially correlated intensity variation and warp variation are modeled as random effects, resulting ...
Kühnel, Line, Pai, Akshay, Raket, Lars Lau, Sommer, Stefan   +3 more
core   +1 more source

Investigations of a compartmental model for leucine kinetics using nonlinear mixed effects models with ordinary and stochastic differential equations

, 2011
Nonlinear mixed effects models represent a powerful tool to simultaneously analyze data from several individuals. In this study a compartmental model of leucine kinetics is examined and extended with a stochastic differential equation to model non-steady
Adiels, Martin, Berglund, Martin, Jirstrand, Mats, Sunnåker, Mikael, Wennberg, Bernt   +4 more
core   +1 more source

Functional mixed effects wavelet estimation for spectra of replicated time series

, 2016
Motivated by spectral analysis of replicated brain signal time series, we propose a functional mixed effects approach to model replicate-specific spectral densities as random curves varying about a deterministic population-mean spectrum.
Chau, Joris, von Sachs, Rainer
core   +1 more source

Assessment of a common nonlinear eddy-viscosity turbulence model in capturing laminarization in mixed convection flows [PDF]

, 2015
Laminarization is an important topic in heat transfer and turbulence modeling. Recent studies have demonstrated that several well-known turbulence models failed to provide accurate prediction when applied to mixed convection flows with significant re ...
Gohari Darabkhani, Hamidreza, Keshmiri, Amir, Revell, Alistair   +2 more
core   +1 more source

Passive scalar anisotropy in a heated turbulent wake: new observations and implications for LES [PDF]

, 2001
The effects of passive scalar anisotropy on subgrid-scale (SGS) physics and modeling for Large-Eddy Simulations are studied experimentally. Measurements are performed across a moderate Reynolds number wake flow generated by a heated cylinder, using an ...
Kang, Hyung Suk, Meneveau, Charles
core   +2 more sources