Zobrazeno 1 - 9
of 9
pro vyhledávání: '"Vladimir Schmidt"'
Autor:
Ann-Kathrin Ozga, Christian Hofmann, Frederic Madesta, Thilo Sentker, Tobias Gauer, René Werner, Cordula Petersen, Vladimir Schmidt
Publikováno v:
Radiotherapy and Oncology. 148:229-234
Background and purpose: 4D CT images often contain artifacts that are suspected to affect treatment planning quality and clinical outcome of lung and liver SBRT. The present study investigates the correlation between the presence of artifacts in SBRT
Autor:
Vladimir Schmidt, Peter M. Kruse
Publikováno v:
ICST Workshops
Combinatorial test design is one common test design methods. In its original version, it lacks support for product lines and variants. In this work we propose an enhanced combinatorial test design considering product variants. We show how to integrat
Autor:
Vladimir Schmidt, Thomas Wriedt
Publikováno v:
Journal of Quantitative Spectroscopy and Radiative Transfer. 113:1712-1718
Using the T-matrix approach electromagnetic scattering by a non-axisymmetric particle with an arbitrary permittivity tensor is studied. The electromagnetic fields inside the scatterer are expressed by a system of quasi-spherical vector wave functions
Publikováno v:
Journal of Quantitative Spectroscopy and Radiative Transfer. 112:1697-1704
The implementation of iterative methods as solvers for the Discrete Sources Method (DSM) is presented. In this method, light scattering computation linear systems with dense and relative small matrices are generated. The linear systems are traditiona
Publikováno v:
Journal of Quantitative Spectroscopy and Radiative Transfer. 112:1679-1686
Over the years the T-matrix method based on the nullfield method established itself as a fast and reliable approach for light scattering simulation. Compared to other programs based on discrete dipole approximation or finite different time domain, pr
Publikováno v:
Journal of Quantitative Spectroscopy and Radiative Transfer. 112:1705-1710
Different preconditioning techniques for the iterative method MinRes as solver for the Discrete Sources Method (DSM) are presented. This semi-analytical method is used for light scattering computations by particles in the Mie scattering regime. Its n
Autor:
Vladimir Schmidt, Thomas Wriedt
Publikováno v:
Journal of Quantitative Spectroscopy and Radiative Transfer. 110:1392-1397
Using the T-matrix approach electromagnetic scattering by a biaxial anisotropic non-axisymmetric particle is studied. Electromagnetic fields inside the scatterer are expressed by a system of quasi-spherical vector wave functions which are derived by
Publikováno v:
Addiction. 94:1533-1540
Aims. This study addressed the following questions for patients after 1 year of methadone maintenance treatment (MMT); (1) What are the demographic features and past history of drug use of benzodiazepine (BZD) abusers? (2) Do BZD abusers abuse more h
Autor:
Vladimir Schmidt, Christian Matyssek, Roman Schuh, Gerhard Seifert, Thomas Wriedt, Mirza Karamehmedovic, Wolfram Hergert, Ondrej Stranik, A. Stalmashonak
Publikováno v:
Optics express. 19(9)
Four widely used electromagnetic field solvers are applied to the problem of scattering by a spherical or spheroidal silver nanoparticle in glass. The solvers are tested in a frequency range where the imaginary part of the scatterer refractive index