Results 31 to 40 of about 19,232 (304)
Transformation procedures in 3D terrestrial coordinate systems [PDF]
Acta Montanistica Slovaca, 2001 Transformation procedures belong to the main tasks of surveyor working in a field of geodesy, for example in satellite geodesy or astronomical geodesy.
Sedlák Vladimír
doaj
Applied Sciences, 2022 The paper is aimed at an assessment of the importance of the coordinate system (Cartesian vs. cylindrical) assumed for simulations of free-round jets.
Karol Wawrzak, Artur Tyliszczak
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New infinite families of Nth-order superintegrable systems separating in Cartesian coordinates [PDF]
Journal of Physics A: Mathematical and Theoretical, 2020 Abstract A study is presented of superintegrable quantum systems in two-dimensional Euclidean space E 2 allowing the separation of variables in Cartesian coordinates. In addition to the Hamiltonian H and the second order integral of motion X, responsible for the separation of variables, they allow a third integral that ...
A M Escobar-Ruiz +2 more
openaire +3 more sources
Analytical solution to swing equations in power grids.
PLoS ONE, 2019 OBJECTIVE:To derive a closed-form analytical solution to the swing equation describing the power system dynamics, which is a nonlinear second order differential equation.
HyungSeon Oh, HyungSeon Oh
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Analytic solutions of a two-fluid hydrodynamic model
Mathematical Modelling and Analysis, 2021 We investigate a one dimensional flow described with the non-compressible coupled Euler and non-compressible Navier-Stokes equations in the Cartesian coordinate system.
Imre Ferenc Barna, László Mátyás
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Annals of Clinical and Translational Neurology, EarlyView.ABSTRACT Background Myasthenia gravis (MG) is a rare disorder characterized by fluctuating muscle weakness with potential life‐threatening crises. Timely interventions may be delayed by limited access to care and fragmented documentation. Our objective was to develop predictive algorithms for MG deterioration using multimodal telemedicine data ...
Maike Stein +7 more
wiley +1 more source
Experimental Analysis and Physics‐Based Analytical Model on Twisted and Coiled Artificial Muscles
Advanced Engineering Materials, EarlyView.Twisted and coiled artificial muscles made from silver‐coated nylon fibers are investigated through experiments and analytical modeling. The actuators achieve contractions up to 19.3% and specific work of 8 kJ kg−1, though efficiency remains limited (≈0.15%) by thermal losses.
Salvatore Garofalo +3 more
wiley +1 more source
A novel laser-based stereotactic localization device for intracranial mass resection
Brain Hemorrhages, 2021 Unfortunately, both frame-based and frameless stereotactic neuronavigation platforms are far from ubiquitous in global neurosurgery, and many facilities lack accurate localization technology to ensure the safety of intracranial surgery such as cerebral ...
Dan Tang, Jose M. Soto, Lingyun Zhang
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Advanced Engineering Materials, EarlyView.A two‐step approach combining laser powder bed fusion of FeSi electrical steel with Bakelite infiltration enables the fabrication of multifunctional gyroid lattice composites. The resulting structures exhibit high strength, magnetic anisotropy, and complete polymer infiltration, demonstrating a simple and scalable route toward lightweight, mechanically
Angelo F. Andreoli +9 more
wiley +1 more source
Bilateral symmetry detection on the basis of Scale Invariant Feature Transform. [PDF]
PLoS ONE, 2014 The automatic detection of bilateral symmetry is a challenging task in computer vision and pattern recognition. This paper presents an approach for the detection of bilateral symmetry in digital single object images.
Habib Akbar +3 more
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