Results 121 to 130 of about 25,416,119 (357)

Karl Popper and the Mechanisms of Hydrogen Embrittlement

Advanced Engineering Materials, EarlyView.
Representation of the beginning of loss of ductility rather than embrittlement. Small concentrations of hydrogen in a diffusible form within iron are well‐established to harm the mechanical integrity of steels. There are theories that attempt to explain the pernicious role of hydrogen.
H. K. D. H. Bhadeshia
wiley   +1 more source

Beeldreconstructie in MRI met compressed sensing

, 2016
Philips Healthcare is een van de grootste fabrikanten van MRI-scanners ter wereld en is geïnteresseerd in het gebruik van compressed sensing-technieken om MRI-scans te versnellen.
Mathematical Modeling, Sub Mathematical Modeling, van Leeuwen, T.   +2 more
core  

Multiple expansions of real numbers with digits set { 0 , 1 , q}

, 2019
For q> 1 we consider expansions in base q with digits set { 0 , 1 , q}. Let U q be the set of points which have a unique q-expansion. For k= 2 , 3 , … , ℵ let B k be the set of bases q> 1 for which there exists x having precisely k different q-expansions,
Jiang, Kan, Li, Wenxia, Mathematical Modeling, Sub Mathematical Modeling, Kong, Derong, Dajani, Karma   +5 more
core   +1 more source

Multimodal Data‐Driven Microstructure Characterization

Advanced Engineering Materials, EarlyView.
A self‐consistent autonomous workflow for EBSP‐based microstructure segmentation by integrating PCA, GMM clustering, and cNMF with information‐theoretic parameter selection, requiring no user input. An optimal ROI size related to characteristic grain size is identified.
Qi Zhang, Santiago Benito, Özge Özgün, Sebastian Weber, Markus Stricker   +4 more
wiley   +1 more source

Nonstandard finite differences for a truncated Bratu–Picard model [PDF]

, 2018
In this paper, we consider theoretical and numerical properties of a nonlinear boundary-value problem which is strongly related to the well-known Gelfand–Bratu model with parameter λ.
Paul Andries Zegeling, Mathematical Modeling, Sehar Iqbal, Zegeling, Paul Andries, Sub Mathematical Modeling, Iqbal, Sehar   +5 more
core   +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

The Diffusion Equation Involving the Dunkl–Laplacian Operator in a Punctured Domain

Fractal and Fractional
The purpose of this paper is to establish solvability results for both direct and inverse problems associated with the diffusion equation involving the Dunkl–Laplacian operator in a punctured domain.
Bayan Bekbolat, Gulzat Nalzhupbayeva, Niyaz Tokmagambetov   +2 more
doaj   +1 more source

Fatigue Crack Initiation and Growth in Nanocrystalline Ni at Multiple Length‐Scales

Advanced Engineering Materials, EarlyView.
Overview of miniaturized in situ SEM fatigue setup and resultant fatigue crack growth data for nanocrystalline Ni. The presented study focuses on the analysis of fatigue crack growth rate (FCGR) in focused ion beam‐notched microcantilevers prepared from nanocrystalline (NC) Ni as a model material.
Igor Moravcik, Alexander Jelinek, Markus Alfreider, Jutta Luksch, Anton Hohenwarter, Florian Schaefer, Christian Motz, Daniel Kiener   +7 more
wiley   +1 more source

A network property necessary for concentration robustness

Nature Communications, 2016
Absolute concentration robustness (ACR), independence of the steady-state concentration of a molecule from the environment, is difficult to predict.
Jeanne M. O. Eloundou-Mbebi, Anika Küken, Nooshin Omranian, Sabrina Kleessen, Jost Neigenfind, Georg Basler, Zoran Nikoloski   +6 more
doaj   +1 more source

A detectability criterion and data assimilation for nonlinear differential equations [PDF]

, 2018
In this paper we propose a new sequential data assimilation method for nonlinear ordinary differential equations with compact state space. The method is designed so that the Lyapunov exponents of the corresponding estimation error dynamics are negative ...
Dep Wiskunde, Mathematical Modeling, Zhuk, Sergiy, Frank, Jason, Sub Mathematical Modeling   +4 more
core   +1 more source