Wyniki wyszukiwania dla: GREEN’S FUNCTION METHODS

• Acceleration of the Discrete Green’s Function Formulation of the FDTD Method Based on Recurrence Schemes

  Publikacja

  • J. Gulgowski
  • T. Stefański

  - Rok 2019

  In this paper, we investigate an acceleration of the discrete Green's function (DGF) formulation of the FDTD method (DGF-FDTD) with the use of recurrence schemes. The DGF-FDTD method allows one to compute FDTD solutions as a convolution of the excitation with the DGF kernel. Hence, it does not require to execute a leapfrog time-stepping scheme in a whole computational domain for this purpose. Until recently, the DGF generation...

  Pełny tekst do pobrania w portalu

• Computational Methods and Function Theory

  Czasopisma

  ISSN: 1617-9447 , eISSN: 2195-3724

• Green`s function methods for Mathematical modeling of unidirectional diffusion process in isothermal metals bonding process

  Publikacja

  • M. Suchecka
  • A. Borisovich
  • W. Serbiński

  - Rok 2005

  Podano wykorzystanie funkcji Greena w rozwiązaniu matematycznego modelu dyfuzji jednowymiarowej podczas izotermicznego łączenia metali.

• Pattern Recognition Methods in Evaluation of the Structure of the Laboratory Data Biominerals, Antioxidant Enzymes, Selected Biochemical Parameters, and Pulmonary Function of Welders

  Publikacja

  • M. Stepniewski
  • E. Kolarzyk
  • P. Zagrodzki
  • K. Solarska
  • A. Pietrzycka
  • M. Kitlinski
  • M. Schlegel-Zawadzka
  • B. Batko

  - BIOLOGICAL TRACE ELEMENT RESEARCH - Rok 2003

  Pełny tekst do pobrania w serwisie zewnętrznym

• Analytical Expression for the Time-Domain Green's Function of a Discrete Plane Wave Propagating in the 3-D FDTD Grid

  Publikacja

  • T. Stefański
  • B. Reichel

  - IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION - Rok 2017

  In this paper, a closed-form expression for the time-domain dyadic Green’s function of a discrete plane wave (DPW) propagating in a 3-D finite-difference time-domain (FDTD) grid is derived. In order to verify our findings, the time-domain implementation of the DPW-injection technique is developed with the use of the derived expression for 3-D total-field/scattered-field (TFSF) FDTD simulations. This implementation requires computations...

  Pełny tekst do pobrania w portalu

• Diethyl carbonate as a green extraction solvent for chlorophenol determination with dispersive liquid–liquid microextraction

  Publikacja

  • M. Tobiszewski
  • W. Zabrocka
  • M. Bystrzanowska

  - Analytical Methods - Rok 2019

  The principles of green analytical chemistry indicate that the search for greener organic solvents for extraction applications is crucial. In this study diethyl carbonate (DEC) is proved to be a green solvent, as it is relatively nontoxic, obtainable from renewable resources and biodegradable. Here it is applied as an extraction solvent for chlorophenol determination in water samples with dispersive liquid–liquid microextraction....

  Pełny tekst do pobrania w portalu

• Discrete Green's function approach to disjoint domain simulations in 3D FDTD method

  Publikacja

  • T. Stefański

  - ELECTRONICS LETTERS - Rok 2013

  A discrete Green’s function (DGF) approach to couple 3D FDTD subdomains is developed. The total-field/scattered-field subdomains are simulated using the explicit FDTD method whilst interaction between them is computed as a convolution of the DGF with equivalent current sources measured over Huygens surfaces. In the developed method, the DGF waveforms are truncated using the Hann’s window. The error varies in the range -65 to -40...

  Pełny tekst do pobrania w portalu

• Quasi-analytical Near-to-Far Field Transformation Based on Field Matching Method for Scattering Problems

  Publikacja

  • M. Warecka
  • P. Kowalczyk
  • R. Lech

  - Rok 2019

  A new quasi-analytical near-to-far field transformation based on field matching method (field expansion in a base of Hankel functions) is presented. This approach uses finite element method to obtain near field, then the field is expressed in a base of Hankel functions. The evaluated coefficients allow to calculate the field outside the numerical domain, also in a far distance. The main advantage of the proposed technique is avoiding of...

  Pełny tekst do pobrania w portalu

• Analysis of graphene multi-strip planar guiding structures with the use of spectral domain approach

  Publikacja

  • W. Marynowski
  • P. Kowalczyk
  • R. Lech
  • A. Kusiek
  • J. Mazur

  - Rok 2017

  Spectral domain approach is modified and used to analyze some simple structures containing graphene strips. The modification is simple and concerns the Green’s function only. Moreover, the method is combined with the recently published root finding algorithms, which significantly improve the efficiency of the analysis. The results obtained for a simple guiding structure is verified and the field displacement effect is confirmed.

• Measurements and Measurement Systems [2021/22]

  Kursy Online

  • A. Golijanek-Jędrzejczyk
  • A. Dzwonkowski
  • M. Śliwiński
  • M. Wołoszyn

  The aim of the course is to introduce theoretical and practical students with basic and advanced methods of measurement of various measured quantity and the design and function of the measurement systems.