Results 201 to 210 of about 15,351 (267)

Forensic classification of gunpowder and fireworks powders by ATR-FT-IR spectroscopy and chemometric modelling. [PDF]

Front Chem
Aljanaahi A, Aljanaahi A, Ahli NA, Alblooshi R, Yasin A, Shah I.   +5 more
europepmc   +1 more source

A Peridynamic Framework for Modeling Progressive Failure in Porous Sandstone Indentation

International Journal for Numerical and Analytical Methods in Geomechanics, EarlyView.
ABSTRACT A state‐based peridynamic model is proposed to simulate the failure mechanisms in porous rocks, using Bentheim sandstone as a specific example. Experimental observations reveal a transition from brittle to ductile failure under increasing triaxial compression. This behavior is attributed to pore compaction. The peridynamic model is enhanced to
Sahir N. Butt, Jörg Renner, Günther Meschke   +2 more
wiley   +1 more source

Kinematic simulation and trajectory planning of intelligent tunneling automatic mesh-laying robot. [PDF]

Sci Rep
Chengjun H, Kun Z, Gege P, Mingchao D, Jinglong B, Liangsong H, Bo L, Shuo W.   +7 more
europepmc   +1 more source

A Numerical Method Combining Cubic Interpolated Propagation and Shifted Grünwald–Letnikov for Fractional Advection–Dispersion Equations

International Journal for Numerical and Analytical Methods in Geomechanics, EarlyView.
ABSTRACT Recent advances in the numerical solution of fractional partial differential equations have yielded promising results. In particular, the Shifted Grünwald–Letnikov (SGL) approach allows for a generalization of the traditional finite difference method to the context of fractional differential equations.
Pedro Victor Serra Mascarenhas, André Luís Brasil Cavalcante   +1 more
wiley   +1 more source

Evaluation of the Mechanical Properties of Pine, Larch, and Spruce Wood Subjected to Saline Treatment. [PDF]

Materials (Basel)
Roman K, Grzegorzewska E, Leszczyński M, Pycka S, Hamidi N.   +4 more
europepmc   +1 more source

Elastoplasticity Informed Kolmogorov–Arnold Networks Using Chebyshev Polynomials

International Journal for Numerical and Analytical Methods in Geomechanics, EarlyView.
ABSTRACT Multilayer perceptron (MLP) networks are predominantly used to develop data‐driven constitutive models for granular materials. They offer a compelling alternative to traditional physics‐based constitutive models in predicting non‐linear responses of these materials, for example, elastoplasticity, under various loading conditions. To attain the
Farinaz Mostajeran, Salah A. Faroughi
wiley   +1 more source

Jacobi-Ritz formulation for modal analysis of thick, anisotropic and non-uniform electric motor stator assemblies considering axisymmetric vibration modes. [PDF]

Meccanica
Andreou P, Hajjaj AZ, Mohammadpour M, Theodossiades S.   +3 more
europepmc   +1 more source

Opening the Black Box of Nonprofit Reputation and Volunteer Attraction With Supervised Machine Learning

Nonprofit Management and Leadership, EarlyView.
ABSTRACT With the aim to explore the potential of machine learning for nonprofit research, this article contrasts traditional linear regression with four contemporary supervised machine learning approaches. Concretely, we predict (1) reputation ratings and (2) the total number of volunteers for 4021 non‐profit organizations in the U.S.
Moritz Schmid, Hannes Lampe, Jurgen Willems   +2 more
wiley   +1 more source

3D mapping of static magnetic field magnitude and axial-components around a total body 3T MRI clinical scanner. [PDF]

Front Public Health
Girardello F, D'Avanzo MA, Mattozzi M, Ferro VM, Acri G, Hartwig V.   +5 more
europepmc   +1 more source

Solving for Blameless and Optimal Control Under Prioritized Safety Constraints

Optimal Control Applications and Methods, EarlyView.
Summary of the proposed method for solving for blameless and optimal control sequences. ABSTRACT In many safety‐critical optimal control problems, users may request multiple safety constraints that are jointly infeasible due to external factors such as subsystem failures, unexpected disturbances, or fuel limitations.
Natalia Pavlasek, Behçet Açıkmeşe, Meeko Oishi, Claus Danielson   +3 more
wiley   +1 more source