Results 61 to 70 of about 281,341 (190)

Numerical inverse transformation for map projections

Computers & Geosciences, 2003
In cartography map projections are used to transform geographical coordinates to plane coordinates. This is called forward transformation. For many geographic information system (GIS) applications paper maps are digitised, and so captured data are integrated into another data set.
openaire   +2 more sources

Evaluation of the Convergence Interval of the Fixed Talbot Algorithm for Numerical Inversion of the Laplace Transform Applied to Solving the Wave Equation

Vetor
This work examines the numerical inversion of the Laplace Transform via Fixed Talbot in an initial-boundary value problem for the wave equation. Although various numerical methods exist for the numerical inversion of the Laplace transform, the Fixed ...
Iago Henrique Teixeira Marcolino, Felipe Matheus Mendes Barbosa, Leslie Darien Pérez-Fernández, Camila Pinto da Costa   +3 more
doaj   +1 more source

Riemann zeros, prime numbers and fractal potentials

, 2003
Using two distinct inversion techniques, the local one-dimensional potentials for the Riemann zeros and prime number sequence are reconstructed. We establish that both inversion techniques, when applied to the same set of levels, lead to the same fractal
A. Ramani, Brandon P. van Zyl, David A. W. Hutchinson, H. Wu, H. Wu, H. Wu   +5 more
core   +1 more source

Full waveform inversion based on deep learning and the phase-preserving symplectic partitioned Runge-Kutta method

Frontiers in Earth Science
To obtain more accurate full waveform inversion results, we present a forward modeling method with minimal phase error, low numerical dispersion, and high computational efficiency.
Yanjie Zhou, Xianxiang Leng, Xueyuan Huang, Xijun He, Tianming Cao   +4 more
doaj   +1 more source

Experimental State Observer of the Population Inversion of a Multistable Erbium-Doped Fiber Laser

Photonics
In this work, numerical and experimental implementation of a state observer applied to an erbium-doped fiber laser (EDFL) has been developed. The state observer is designed through the mathematical model of the EDFL to estimate the non-measurable ...
Daniel Alejandro Magallón-García, Didier López-Mancilla, Rider Jaimes-Reátegui, Juan Hugo García-López, Guillermo Huerta Cuellar, Luis Javier Ontañon-García, Fabian Soto-Casillas   +6 more
doaj   +1 more source

Investigation of Inversion Charge Characteristics and Inversion Charge Loss for InGaAs Negative-Capacitance Double-Gate FinFETs Considering Quantum Capacitance

IEEE Journal of the Electron Devices Society, 2020
This paper investigates the inversion charge characteristics and quantum-capacitance induced inversion charge loss for In0.53Ga0.47As negative-capacitance FinFETs (NC-FinFETs) using theoretical calculation corroborated with numerical simulation.
Shih-En Huang, Shih-Han Lin, Pin Su
doaj   +1 more source

Uniform Penalty inversion of two-dimensional NMR Relaxation data

, 2016
The inversion of two-dimensional NMR data is an ill-posed problem related to the numerical computation of the inverse Laplace transform. In this paper we present the 2DUPEN algorithm that extends the Uniform Penalty (UPEN) algorithm [Borgia, Brown ...
Bortolotti, V., Brown, R. J. S., Fantazzini, P., Landi, G., Zama, F.   +4 more
core   +1 more source

Anomalous magneto-oscillations in two-dimensional systems

, 1999
The frequencies of Shubnikov-de Haas oscillations have long been used to measure the unequal population of spin-split two-dimensional subbands in inversion asymmetric systems.
B. Jusserand, C. Kittel, D. Shoenberg, E. A. de Andrada e Silva, E. P. De Poortere, H. L. Störmer, H. Mayer, H.-R. Trebin, J. Bolte, J. Luo, J. Nitta, J. P. Eisenstein, J. P. Lu, L. Onsager, M. Shayegan, M. V. Berry, P. D. Dresselhaus, R. G. Littlejohn, R. Winkler, R. Winkler, R. Winkler, R. Winkler, R. Wollrab, S. J. Papadakis, S. J. Papadakis, T. Ando, U. Ekenberg, U. Rössler, Y. A. Bychkov   +28 more
core   +1 more source

Size dependence of the surface spin disorder and surface anisotropy constant in ferrite nanoparticles. [PDF]

Nanoscale Adv, 2023
Gerina M, Sanna Angotzi M, Mameli V, Gajdošová V, Rainer DN, Dopita M, Steinke NJ, Aurélio D, Vejpravová J, Zákutná D.   +9 more
europepmc   +1 more source