Results 21 to 30 of about 32,867,929 (328)

A Two-Dimensional Mesh Refinement Method for Problems with One-Dimensional Singularities [PDF]

, 1985
This paper introduces a method for resolving internal layers that can occur in the solutions of time-dependent differential equations in two space dimensions. Singular features in these solutions that are essentially one-dimensional in nature but are not
Brown, David L., Reyna, Luis Guillermo M.   +1 more
core   +1 more source

Partially Implicit FDTD (PI-FDTD) Method for Lower Dispersion and Anisotropic Errors

IEEE Access, 2022
A new partially implicit 3D FDTD (PI-FDTD) method is introduced. The method is not unconditionally stable, but its stability limit is 6 times higher than that of the classic Yee’s FDTD method.
Mehmet Kusaf, Abdullah Yucel Oztoprak
doaj   +1 more source

A generalized ADI iterative method

Numerische Mathematik, 1993
The ADI iterative method for the solution of Sylvester's equation \(AX - XB = C\) proceeds by strictly alternating between the solution of the two equations \((A - \delta_{k+1} I)X_{2k+1} = X_{2k}(B - \delta_{k + 1} I)+ C\) and \(X_{2k + 2}(B - \tau_{k + 1} I) = (A - \tau_{k + 1} I) X_{2k+1} - C\), for \(k = 0,1,2,\dots\).
Reichel, L., Levenberg, N.
openaire   +2 more sources

Study of two-dimensional transient heat transfer through a multi-layers wall: Application to the buildings thermal insulation

Revue des Énergies Renouvelables, 2021
The two-dimensional transient heat conduction through a multilayers wall made of different materials and thicknesses was numerically resolved. The equations system resolution was carried out by Alternating direction implicit method (ADI). The outdoor and
Youcef Tamene, Cherif Boulebbina
doaj  

SFADI: the Speckle-Free Angular Differential Imaging method [PDF]

, 2017
We present a new processing technique aimed at significantly improving the angular differential imaging method (ADI) in the context of high-contrast imaging of faint objects nearby bright stars in observations obtained with extreme adaptive optics (EXAO)
Antoniucci, Simone, Causi, Gianluca Li, Mattioli, Massimiliano, Pedichini, Fernando, Stangalini, Marco, Testa, Vincenzo   +5 more
core   +2 more sources

Characteristics of tempering response of austempered ductile iron

Journal of Materials Research and Technology, 2018
Austempered ductile iron (ADI) is produced by an isothermal heat treatment. Tempering is an effective method to increase the toughness and decrease the hardness of ADI.
Bingxu Wang, Gary C. Barber, Chuanlin Tao, Xichen Sun, Xu Ran   +4 more
doaj   +1 more source

New Techniques for High-Contrast Imaging with ADI: the ACORNS-ADI SEEDS Data Reduction Pipeline [PDF]

, 2013
We describe Algorithms for Calibration, Optimized Registration, and Nulling the Star in Angular Differential Imaging (ACORNS-ADI), a new, parallelized software package to reduce high-contrast imaging data, and its application to data from the SEEDS ...
Abe, L., Brandner, W., Brandt, Timothy D., Carson, J., Egner, S., Feldt, M., Golota, T., Goto, M., Grady, C. A., Guyon, O., Hashimoto, J., Hayano, Y., Hayashi, M., Hayashi, S., Henning, T., Hodapp, K. W., Ishii, M., Iye, M., Janson, M., Kandori, R., Knapp, G. R., Kudo, T., Kusakabe, N., Kuzuhara, M., Kwon, J., Matsuo, T., McElwain, Michael W., Miyama, S., Morino, J. -I., Moro-Martin, A., Nishimura, T., Pyo, T. -S., Serabyn, E., Suto, H., Suzuki, R., Takami, H., Takami, M., Takato, N., Tamura, M., Terada, H., Thalmann, C., Tomono, D., Turner, Edwin L., Usuda, T., Watanabe, M., Wisniewski, J. P., Yamada, T.   +46 more
core   +3 more sources

Alternating-direction implicit finite difference methods for a new two-dimensional two-sided space-fractional diffusion equation

Advances in Difference Equations, 2018
According to the principle of conservation of mass and the fractional Fick’s law, a new two-sided space-fractional diffusion equation was obtained. In this paper, we present two accurate and efficient numerical methods to solve this equation.
Xiucao Yin, Shaomei Fang, Changhong Guo
doaj   +1 more source

Socioeconomic deprivation and survival outcomes in primary central nervous system lymphomas

Frontiers in Oncology, 2022
ObjectiveTo our knowledge, the impact of area-level socioeconomic status (SES) has not yet been described in primary central nervous system lymphomas (PCNSLs).
Xiangyang Deng, Xionggang Yang, Chunlei Yang, Kezhu Chen, Junwei Ren, Jun Zeng, Quan Zhang, Tianwen Li, Qisheng Tang, Jianhong Zhu   +9 more
doaj   +1 more source

Alternating Direction Implicit Method for Solving Parabolic Partial Differential Equations in Three Dimensions [PDF]

Al-Rafidain Journal of Computer Sciences and Mathematics, 2012
In this paper, the parabolic partial differential equations in three-dimensions are solved by two types of finite differences, such as, Alternating Direction Explicit (ADE) method and Alternating Direction Implicit (ADI) method.
Abdulghafor Al-Rozbayani, Mahmood Yahya
doaj   +1 more source