Search results for: SCATTERING PARAMETER COMPUTATION

• Greedy Multipoint Model-Order Reduction Technique for Fast Computation of Scattering Parameters of Electromagnetic Systems

  Publication

  • M. Rewieński
  • A. Lamęcki
  • M. Mrozowski

  - IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES - Year 2016

  This paper attempts to develop a new automated multipoint model-order reduction (MOR) technique, based on matching moments of the system input–output function, which would be suited for fast and accurate computation of scattering parameters for electromagnetic (EM) systems over a wide frequency band. To this end, two questions are addressed. Firstly, the cost of the wideband reduced model generation is optimized by automating a...

  Full text to download in external service

• Automated Reduced Model Order Selection

  Publication

  • M. Rewieński
  • G. Fotyga
  • A. Lamęcki
  • M. Mrozowski

  - IEEE Antennas and Wireless Propagation Letters - Year 2015

  This letter proposes to automate generation of reduced-order models used for accelerated -parameter computation by applying a posteriori model error estimators. So far,a posteriori error estimators were used in Reduced Basis Method (RBM) and Proper Orthogonal Decomposition (POD) to select frequency points at which basis vectors are generated. This letter shows how a posteriori error estimators can be applied to automatically select...

  Full text to download in external service

• Uniform expansion estimates in the cubic map as a function of the parameter

  Open Research Data

  open access

  • P. Pilarczyk

  - series: Uniform expansion estimates in one-dimensional dynamics

  This dataset contains selected results of numerical computations described in the paper "Quantitative hyperbolicity estimates in one-dimensional dynamics" by S. Day, H. Kokubu, S. Luzzatto, K. Mischaikow, H. Oka, P. Pilarczyk, published in Nonlinearity, Vol. 21, No. 9 (2008), 1967-1987, doi: 10.1088/0951-7715/21/9/002.

• Uniform expansion estimates in the quadratic map as a function of the parameter, with a large range of parameters

  Open Research Data

  open access

  • P. Pilarczyk

  - series: Uniform expansion estimates in one-dimensional dynamics

  This dataset contains selected results of numerical computations described in the paper "Quantitative hyperbolicity estimates in one-dimensional dynamics" by S. Day, H. Kokubu, S. Luzzatto, K. Mischaikow, H. Oka, P. Pilarczyk, published in Nonlinearity, Vol. 21, No. 9 (2008), 1967-1987, doi: 10.1088/0951-7715/21/9/002.

• Uniform expansion estimates in the quadratic map as a function of the parameter, with a very small critical neighborhood

  Open Research Data

  open access

  • P. Pilarczyk

  - series: Uniform expansion estimates in one-dimensional dynamics

  This dataset contains selected results of numerical computations described in the paper "Quantitative hyperbolicity estimates in one-dimensional dynamics" by S. Day, H. Kokubu, S. Luzzatto, K. Mischaikow, H. Oka, P. Pilarczyk, published in Nonlinearity, Vol. 21, No. 9 (2008), 1967-1987, doi: 10.1088/0951-7715/21/9/002.

• Uniform expansion estimates in the unimodal map with γ=1.5 as a function of the parameter

  Open Research Data

  open access

  • P. Pilarczyk

  - series: Uniform expansion estimates in one-dimensional dynamics

  This dataset contains selected results of numerical computations described in the paper "Quantitative hyperbolicity estimates in one-dimensional dynamics" by S. Day, H. Kokubu, S. Luzzatto, K. Mischaikow, H. Oka, P. Pilarczyk, published in Nonlinearity, Vol. 21, No. 9 (2008), 1967-1987, doi: 10.1088/0951-7715/21/9/002.

• Uniform expansion estimates in the unimodal map with γ=2.5 as a function of the parameter

  Open Research Data

  open access

  • P. Pilarczyk

  - series: Uniform expansion estimates in one-dimensional dynamics

  This dataset contains selected results of numerical computations described in the paper "Quantitative hyperbolicity estimates in one-dimensional dynamics" by S. Day, H. Kokubu, S. Luzzatto, K. Mischaikow, H. Oka, P. Pilarczyk, published in Nonlinearity, Vol. 21, No. 9 (2008), 1967-1987, doi: 10.1088/0951-7715/21/9/002.

• Uniform expansion estimates in the quadratic map as a function of the parameter, with a small critical neighborhood

  Open Research Data

  open access

  • P. Pilarczyk

  - series: Uniform expansion estimates in one-dimensional dynamics

  This dataset contains selected results of numerical computations described in the paper "Quantitative hyperbolicity estimates in one-dimensional dynamics" by S. Day, H. Kokubu, S. Luzzatto, K. Mischaikow, H. Oka, P. Pilarczyk, published in Nonlinearity, Vol. 21, No. 9 (2008), 1967-1987, doi: 10.1088/0951-7715/21/9/002.

• Uniform expansion estimates in the quadratic map as a function of the parameter, using the “uniform” partition type

  Open Research Data

  open access

  • P. Pilarczyk

  - series: Uniform expansion estimates in one-dimensional dynamics

  This dataset contains selected results of numerical computations described in the paper "Quantitative hyperbolicity estimates in one-dimensional dynamics" by S. Day, H. Kokubu, S. Luzzatto, K. Mischaikow, H. Oka, P. Pilarczyk, published in Nonlinearity, Vol. 21, No. 9 (2008), 1967-1987, doi: 10.1088/0951-7715/21/9/002.

• Uniform expansion estimates in the quadratic map as a function of the parameter, using the “critical” partition type

  Open Research Data

  open access

  • P. Pilarczyk

  - series: Uniform expansion estimates in one-dimensional dynamics

  This dataset contains selected results of numerical computations described in the paper "Quantitative hyperbolicity estimates in one-dimensional dynamics" by S. Day, H. Kokubu, S. Luzzatto, K. Mischaikow, H. Oka, P. Pilarczyk, published in Nonlinearity, Vol. 21, No. 9 (2008), 1967-1987, doi: 10.1088/0951-7715/21/9/002.

• Uniform expansion estimates in the quadratic map as a function of the parameter, using the “derivative” partition type

  Open Research Data

  open access

  • P. Pilarczyk

  - series: Uniform expansion estimates in one-dimensional dynamics

  This dataset contains selected results of numerical computations described in the paper "Quantitative hyperbolicity estimates in one-dimensional dynamics" by S. Day, H. Kokubu, S. Luzzatto, K. Mischaikow, H. Oka, P. Pilarczyk, published in Nonlinearity, Vol. 21, No. 9 (2008), 1967-1987, doi: 10.1088/0951-7715/21/9/002.

• Uniform expansion estimates in the quadratic map as a function of the partition size, using Johnson’s algorithm

  Open Research Data

  open access

  • P. Pilarczyk

  - series: Uniform expansion estimates in one-dimensional dynamics

  This dataset contains selected results of numerical computations described in the paper "Quantitative hyperbolicity estimates in one-dimensional dynamics" by S. Day, H. Kokubu, S. Luzzatto, K. Mischaikow, H. Oka, P. Pilarczyk, published in Nonlinearity, Vol. 21, No. 9 (2008), 1967-1987, doi: 10.1088/0951-7715/21/9/002.

• Uniform expansion estimates in the quadratic map with the smallest critical neighborhood for which the expansion exponent λ0 is positive

  Open Research Data

  open access

  • P. Pilarczyk

  - series: Uniform expansion estimates in one-dimensional dynamics

  This dataset contains selected results of numerical computations described in the paper "Quantitative hyperbolicity estimates in one-dimensional dynamics" by S. Day, H. Kokubu, S. Luzzatto, K. Mischaikow, H. Oka, P. Pilarczyk, published in Nonlinearity, Vol. 21, No. 9 (2008), 1967-1987, doi: 10.1088/0951-7715/21/9/002.

• Uniform expansion estimates in the quadratic map as a function of the partition size, computing λ only

  Open Research Data

  open access

  • P. Pilarczyk

  - series: Uniform expansion estimates in one-dimensional dynamics

  This dataset contains selected results of numerical computations described in the paper "Quantitative hyperbolicity estimates in one-dimensional dynamics" by S. Day, H. Kokubu, S. Luzzatto, K. Mischaikow, H. Oka, P. Pilarczyk, published in Nonlinearity, Vol. 21, No. 9 (2008), 1967-1987, doi: 10.1088/0951-7715/21/9/002.

• Uniform expansion estimates in the quadratic map as a function of the partition size, using the “derivative” partition type

  Open Research Data

  open access

  • P. Pilarczyk

  - series: Uniform expansion estimates in one-dimensional dynamics

  This dataset contains selected results of numerical computations described in the paper "Quantitative hyperbolicity estimates in one-dimensional dynamics" by S. Day, H. Kokubu, S. Luzzatto, K. Mischaikow, H. Oka, P. Pilarczyk, published in Nonlinearity, Vol. 21, No. 9 (2008), 1967-1987, doi: 10.1088/0951-7715/21/9/002.

• Uniform expansion estimates in the quadratic map with the smallest critical neighborhood for which the expansion exponent λ is positive

  Open Research Data

  open access

  • P. Pilarczyk

  - series: Uniform expansion estimates in one-dimensional dynamics

  This dataset contains selected results of numerical computations described in the paper "Quantitative hyperbolicity estimates in one-dimensional dynamics" by S. Day, H. Kokubu, S. Luzzatto, K. Mischaikow, H. Oka, P. Pilarczyk, published in Nonlinearity, Vol. 21, No. 9 (2008), 1967-1987, doi: 10.1088/0951-7715/21/9/002.

• Uniform expansion estimates in the quadratic map as a function of the critical neighborhood size

  Open Research Data

  open access

  • P. Pilarczyk

  - series: Uniform expansion estimates in one-dimensional dynamics

  This dataset contains selected results of numerical computations described in the paper "Quantitative hyperbolicity estimates in one-dimensional dynamics" by S. Day, H. Kokubu, S. Luzzatto, K. Mischaikow, H. Oka, P. Pilarczyk, published in Nonlinearity, Vol. 21, No. 9 (2008), 1967-1987, doi: 10.1088/0951-7715/21/9/002.

• Uniform expansion estimates in the quadratic map as a function of the partition size, using the “critical” partition type

  Open Research Data

  open access

  • P. Pilarczyk

  - series: Uniform expansion estimates in one-dimensional dynamics

  This dataset contains selected results of numerical computations described in the paper "Quantitative hyperbolicity estimates in one-dimensional dynamics" by S. Day, H. Kokubu, S. Luzzatto, K. Mischaikow, H. Oka, P. Pilarczyk, published in Nonlinearity, Vol. 21, No. 9 (2008), 1967-1987, doi: 10.1088/0951-7715/21/9/002.

• Uniform expansion estimates in the quadratic map as a function of the partition size, using the Floyd–Warshall algorithm

  Open Research Data

  open access

  • P. Pilarczyk

  - series: Uniform expansion estimates in one-dimensional dynamics

  This dataset contains selected results of numerical computations described in the paper "Quantitative hyperbolicity estimates in one-dimensional dynamics" by S. Day, H. Kokubu, S. Luzzatto, K. Mischaikow, H. Oka, P. Pilarczyk, published in Nonlinearity, Vol. 21, No. 9 (2008), 1967-1987, doi: 10.1088/0951-7715/21/9/002.

• Uniform expansion estimates in the quadratic map with the smallest critical neighborhood for which the expansion exponent λ0 is greater than 0.1

  Open Research Data

  open access

  • P. Pilarczyk

  - series: Uniform expansion estimates in one-dimensional dynamics

  This dataset contains selected results of numerical computations described in the paper "Quantitative hyperbolicity estimates in one-dimensional dynamics" by S. Day, H. Kokubu, S. Luzzatto, K. Mischaikow, H. Oka, P. Pilarczyk, published in Nonlinearity, Vol. 21, No. 9 (2008), 1967-1987, doi: 10.1088/0951-7715/21/9/002.

• Uniform expansion estimates in the quadratic map with the smallest critical neighborhood for which the expansion exponent λ is greater than 0.1

  Open Research Data

  open access

  • P. Pilarczyk

  - series: Uniform expansion estimates in one-dimensional dynamics

  This dataset contains selected results of numerical computations described in the paper "Quantitative hyperbolicity estimates in one-dimensional dynamics" by S. Day, H. Kokubu, S. Luzzatto, K. Mischaikow, H. Oka, P. Pilarczyk, published in Nonlinearity, Vol. 21, No. 9 (2008), 1967-1987, doi: 10.1088/0951-7715/21/9/002.

• Low energy elastic scattering of electrons from hexafluoropropene (C3F6)

  Publication

  • A. Sakaamini
  • S. Khakoo
  • B. Hlousek
  • M. Khakoo
  • M. Zawadzki
  • M. Kiataki
  • M. Bettega

  - JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS - Year 2019

  We present cross sections from a joint experimental and theoretical study on elastic electron scattering from hexafluoropropene (C3F6) in the gas phase. The experimental results, using low energy electron spectroscopy, were obtained at incident electron energies of 0.5, 1, 1.5, 2, 3, 4, 5, 6, 10, 12, 15 and 20 eV, for scattering angles ranging from 10°to 130°. The theoretical method used in the computation of the integral, momentum...

  Full text to download in external service

• Coherent-wave Monte Carlo method for simulating light propagation in tissue

  Publication

  • M. Kraszewski
  • J. Pluciński

  - Year 2016

  Simulating propagation and scattering of coherent light in turbid media, such as biological tissues, is a complex problem. Numerical methods for solving Helmholtz or wave equation (e.g. finite-difference or finite-element methods) require large amount of computer memory and long computation time. This makes them impractical for simulating laser beam propagation into deep layers of tissue. Other group of methods, based on radiative...

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• Stochastic intervals for the family of quadratic maps

  Open Research Data

  open access

  • P. Pilarczyk
  • G. Graff

  Numerical analysis of chaotic dynamics is a challenging task. The one-parameter families of logistic maps and closely related quadratic maps f_a(x)=a-x^2 are well-known examples of such dynamical systems. Determining parameter values that yield stochastic-like dynamics is especially difficult, because although this set has positive Lebesgue measure,...

• Electron-scattering cross sections for selected alkyne molecules: Measurements and calculations

  Publication

  • C. Szmytkowski
  • P. Możejko
  • M. Zawadzki
  • K. Maciąg
  • E. Ptasińska-Denga

  - PHYSICAL REVIEW A - Year 2014

  We report cross-section results from experimental and theoretical studies on electron collisions with 1-butyne (HC≡C–CH2CH3) and acetylene (HC≡CH) molecules and from computations for a propyne (HC≡C–CH3) molecule. Absolute grand -total electron-scattering cross sections (TCSs) were measured at impact energies ranging from about 0.5 to 300 eV using the linear electron-transmission method. The TCS energy curve for 1-butyne has a...

  Full text available to download

• A Goal-Oriented Error Estimator for Reduced Basis Method Modeling of Microwave Devices

  Publication

  • M. Rewieński
  • A. Lamęcki
  • M. Mrozowski

  - IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS - Year 2015

  This letter proposes a novel a-posteriori error estimator suitable for the reduced order modeling of microwave circuits. Unlike the existing error estimators based on impedance function residuals, the new one exploits the residual error associated with the computation of the scattering matrix. The estimator can be effectively used in the Reduced Basis Method (RBM) to automatically generate reduced-order models. The results of numerical...

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• Electron scattering cross sections for 1-pentene, H2C=CH-(CH2)2CH3, molecules

  Publication

  • C. Szmytkowski
  • P. Możejko
  • M. Zawadzki
  • E. Ptasińska-Denga

  - JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS - Year 2013

  Cross sections, both experimental and theoretical, are reported for electron scattering from 1-pentene (C5H10) molecules. Absolute grand-total cross sections (TCSs) were measured at electron impact energies ranging from 1 to 300 eV, using a linear electron-transmission technique. The dominant behaviour of the experimental TCS energy function is a distinct asymmetric enhancement with the maximum located around 6.5 eV. Discernible...

  Full text to download in external service

• Scattering of electrons by a 1,2-butadiene (C4H6) molecule: measurements and calculations

  Publication

  • C. Szmytkowski
  • P. Możejko
  • M. Zawadzki
  • E. Ptasińska-Denga

  - JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS - Year 2015

  We present the results of experimental and theoretical study on electron collisions with a 1,2-butadiene (H2C=C=CHCH3) molecule. Absolute grand-total cross sections (TCSs) were measured using a linear electron-transmission method for collision energies in the 0.5–300 eV range. Two distinct features in the TCS energy curve were detected: a narrow peak located at 2.3 eV and a broad enhancement centered around 9 eV. We attributed...

  Full text to download in external service

• The Weibull model of the multipath fading channel

  Open Research Data

  open access

  • B. Pałczyńska
  • K. M. Noga

  - series: Simulations of multipath fading channels using the Monte-Carlo method

  The dataset contains the results of simulations that are part of the research on modelling the multipath fading in the communication channel. The Weibull fading envelope is generated using the Monte-Carlo simulation (MCS) in the LabVIEW programming environment.

• Morse decompositions for a two-patch vaccination model

  Open Research Data

  open access

  • P. Pilarczyk

  - series: A database of global dynamics for a two-patch vaccination model

  This dataset contains selected results of rigorous numerical computations described in Section 5 of the paper "Rich bifurcation structure in a two-patch vaccination model" by D.H. Knipl, P. Pilarczyk, G. Röst, published in SIAM Journal on Applied Dynamical Systems (SIADS), Vol. 14, No. 2 (2015), pp. 980–1017, doi: 10.1137/140993934.

• Continuation classes for a two-patch vaccination model

  Open Research Data

  open access

  • P. Pilarczyk

  - series: A database of global dynamics for a two-patch vaccination model

  This dataset contains selected results of rigorous numerical computations described in Section 5 of the paper "Rich bifurcation structure in a two-patch vaccination model" by D.H. Knipl, P. Pilarczyk, G. Röst, published in SIAM Journal on Applied Dynamical Systems (SIADS), Vol. 14, No. 2 (2015), pp. 980–1017, doi: 10.1137/140993934.

• Parallel multithread computing for spectroscopic analysis in optical coherence tomography

  Publication

  • M. Trojanowski
  • M. Kraszewski
  • M. Strąkowski
  • J. Pluciński

  - Year 2014

  Spectroscopic Optical Coherence Tomography (SOCT) is an extension of Optical Coherence Tomography (OCT). It allows gathering spectroscopic information from individual scattering points inside the sample. It is based on time-frequency analysis of interferometric signals. Such analysis requires calculating hundreds of Fourier transforms while performing a single A-scan. Additionally, further processing of acquired spectroscopic information...

  Full text to download in external service

• Conley-Morse graphs for a two-patch vaccination model

  Open Research Data

  open access

  • P. Pilarczyk

  - series: A database of global dynamics for a two-patch vaccination model

  This dataset contains selected results of rigorous numerical computations described in Section 5 of the paper "Rich bifurcation structure in a two-patch vaccination model" by D.H. Knipl, P. Pilarczyk, G. Röst, published in SIAM Journal on Applied Dynamical Systems (SIADS), Vol. 14, No. 2 (2015), pp. 980–1017, doi: 10.1137/140993934.

• Time travel without paradoxes: Ring resonator as a universal paradigm for looped quantum evolutions

  Publication

  • M. Czachor

  - PHYSICS LETTERS A - Year 2019

  A ring resonator involves a scattering process where a part of the output is fed again into the input. The same formal structure is encountered in the problem of time travel in a neighborhood of a closed timelike curve (CTC). We know how to describe quantum optics of ring resonators, and the resulting description agrees with experiment. We can apply the same formal strategy to any looped quantum evolution, in particular to the...

  Full text available to download

• Continuation classes for a population model with harvesting. Case He-S1: Equal harvesting of juveniles and adults, survival rates of juveniles and adults add up to 1

  Open Research Data

  open access

  • P. Pilarczyk

  - series: A database of global dynamics for a population model with harvesting

  This dataset contains selected results of rigorous numerical computations conducted in the framework of the research described in the paper "Global dynamics in a stage-structured discrete population model with harvesting" by E. Liz and P. Pilarczyk: Journal of Theoretical Biology, Vol. 297 (2012), pp. 148–165, doi: 10.1016/j.jtbi.2011.12.012.

• Continuation classes for a population model with harvesting. Case Ha-S1: Harvesting adults only, survival rates of juveniles and adults add up to 1

  Open Research Data

  open access

  • P. Pilarczyk

  - series: A database of global dynamics for a population model with harvesting

  This dataset contains selected results of rigorous numerical computations conducted in the framework of the research described in the paper "Global dynamics in a stage-structured discrete population model with harvesting" by E. Liz and P. Pilarczyk: Journal of Theoretical Biology, Vol. 297 (2012), pp. 148–165, doi: 10.1016/j.jtbi.2011.12.012.

• Continuation classes for a population model with harvesting. Case He-Se: Equal harvesting and equal survival rates of juveniles and adults

  Open Research Data

  open access

  • P. Pilarczyk

  - series: A database of global dynamics for a population model with harvesting

  This dataset contains selected results of rigorous numerical computations conducted in the framework of the research described in the paper "Global dynamics in a stage-structured discrete population model with harvesting" by E. Liz and P. Pilarczyk: Journal of Theoretical Biology, Vol. 297 (2012), pp. 148–165, doi: 10.1016/j.jtbi.2011.12.012.

• Continuation classes for a population model with harvesting. Case Hj-S1: Harvesting juveniles only, survival rates of juveniles and adults add up to 1

  Open Research Data

  open access

  • P. Pilarczyk

  - series: A database of global dynamics for a population model with harvesting

  This dataset contains selected results of rigorous numerical computations conducted in the framework of the research described in the paper "Global dynamics in a stage-structured discrete population model with harvesting" by E. Liz and P. Pilarczyk: Journal of Theoretical Biology, Vol. 297 (2012), pp. 148–165, doi: 10.1016/j.jtbi.2011.12.012.

• Continuation classes for a population model with harvesting. Case Hj-Se: Harvesting juveniles only, equal survival rates of juveniles and adults

  Open Research Data

  open access

  • P. Pilarczyk

  - series: A database of global dynamics for a population model with harvesting

  This dataset contains selected results of rigorous numerical computations conducted in the framework of the research described in the paper "Global dynamics in a stage-structured discrete population model with harvesting" by E. Liz and P. Pilarczyk: Journal of Theoretical Biology, Vol. 297 (2012), pp. 148–165, doi: 10.1016/j.jtbi.2011.12.012.

• Continuation classes for a population model with harvesting. Case Ha-Se: Harvesting adults only, equal survival rates of juveniles and adults

  Open Research Data

  open access

  • P. Pilarczyk

  - series: A database of global dynamics for a population model with harvesting

  This dataset contains selected results of rigorous numerical computations conducted in the framework of the research described in the paper "Global dynamics in a stage-structured discrete population model with harvesting" by E. Liz and P. Pilarczyk: Journal of Theoretical Biology, Vol. 297 (2012), pp. 148–165, doi: 10.1016/j.jtbi.2011.12.012.

• Morse decompositions for a population model with harvesting. Case Ha-Se: Harvesting adults only, equal survival rates of juveniles and adults

  Open Research Data

  open access

  • P. Pilarczyk

  - series: A database of global dynamics for a population model with harvesting

  This dataset contains selected results of rigorous numerical computations conducted in the framework of the research described in the paper "Global dynamics in a stage-structured discrete population model with harvesting" by E. Liz and P. Pilarczyk: Journal of Theoretical Biology, Vol. 297 (2012), pp. 148–165, doi: 10.1016/j.jtbi.2011.12.012.

• Morse decompositions for a population model with harvesting. Case He-S1: Equal harvesting of juveniles and adults, survival rates of juveniles and adults add up to 1

  Open Research Data

  open access

  • P. Pilarczyk

  - series: A database of global dynamics for a population model with harvesting

  This dataset contains selected results of rigorous numerical computations conducted in the framework of the research described in the paper "Global dynamics in a stage-structured discrete population model with harvesting" by E. Liz and P. Pilarczyk: Journal of Theoretical Biology, Vol. 297 (2012), pp. 148–165, doi: 10.1016/j.jtbi.2011.12.012.

• Morse decompositions for a population model with harvesting. Case Ha-S1: Harvesting adults only, survival rates of juveniles and adults add up to 1

  Open Research Data

  open access

  • P. Pilarczyk

  - series: A database of global dynamics for a population model with harvesting

  This dataset contains selected results of rigorous numerical computations conducted in the framework of the research described in the paper "Global dynamics in a stage-structured discrete population model with harvesting" by E. Liz and P. Pilarczyk: Journal of Theoretical Biology, Vol. 297 (2012), pp. 148–165, doi: 10.1016/j.jtbi.2011.12.012.

• Morse decompositions for a population model with harvesting. Case He-Se: Equal harvesting and equal survival rates of juveniles and adults

  Open Research Data

  open access

  • P. Pilarczyk

  - series: A database of global dynamics for a population model with harvesting

  This dataset contains selected results of rigorous numerical computations conducted in the framework of the research described in the paper "Global dynamics in a stage-structured discrete population model with harvesting" by E. Liz and P. Pilarczyk: Journal of Theoretical Biology, Vol. 297 (2012), pp. 148–165, doi: 10.1016/j.jtbi.2011.12.012.

• Morse decompositions for a population model with harvesting. Case Hj-Se: Harvesting juveniles only, equal survival rates of juveniles and adults

  Open Research Data

  open access

  • P. Pilarczyk

  - series: A database of global dynamics for a population model with harvesting

  This dataset contains selected results of rigorous numerical computations conducted in the framework of the research described in the paper "Global dynamics in a stage-structured discrete population model with harvesting" by E. Liz and P. Pilarczyk: Journal of Theoretical Biology, Vol. 297 (2012), pp. 148–165, doi: 10.1016/j.jtbi.2011.12.012.

• Morse decompositions for a population model with harvesting. Case Hj-S1: Harvesting juveniles only, survival rates of juveniles and adults add up to 1

  Open Research Data

  open access

  • P. Pilarczyk

  - series: A database of global dynamics for a population model with harvesting

  This dataset contains selected results of rigorous numerical computations conducted in the framework of the research described in the paper "Global dynamics in a stage-structured discrete population model with harvesting" by E. Liz and P. Pilarczyk: Journal of Theoretical Biology, Vol. 297 (2012), pp. 148–165, doi: 10.1016/j.jtbi.2011.12.012.

• Conley-Morse graphs for a population model with harvesting. Case He-S1: Equal harvesting of juveniles and adults, survival rates of juveniles and adults add up to 1

  Open Research Data

  open access

  • P. Pilarczyk

  - series: A database of global dynamics for a population model with harvesting

  This dataset contains selected results of rigorous numerical computations conducted in the framework of the research described in the paper "Global dynamics in a stage-structured discrete population model with harvesting" by E. Liz and P. Pilarczyk: Journal of Theoretical Biology, Vol. 297 (2012), pp. 148–165, doi: 10.1016/j.jtbi.2011.12.012.

• Conley-Morse graphs for a population model with harvesting. Case Hj-Se: Harvesting juveniles only, equal survival rates of juveniles and adults

  Open Research Data

  open access

  • P. Pilarczyk

  - series: A database of global dynamics for a population model with harvesting

  This dataset contains selected results of rigorous numerical computations conducted in the framework of the research described in the paper "Global dynamics in a stage-structured discrete population model with harvesting" by E. Liz and P. Pilarczyk: Journal of Theoretical Biology, Vol. 297 (2012), pp. 148–165, doi: 10.1016/j.jtbi.2011.12.012.

• Conley-Morse graphs for a population model with harvesting. Case He-Se: Equal harvesting and equal survival rates of juveniles and adults

  Open Research Data

  open access

  • P. Pilarczyk

  - series: A database of global dynamics for a population model with harvesting

  This dataset contains selected results of rigorous numerical computations conducted in the framework of the research described in the paper "Global dynamics in a stage-structured discrete population model with harvesting" by E. Liz and P. Pilarczyk: Journal of Theoretical Biology, Vol. 297 (2012), pp. 148–165, doi: 10.1016/j.jtbi.2011.12.012.

• Conley-Morse graphs for a population model with harvesting. Case Hj-S1: Harvesting juveniles only, survival rates of juveniles and adults add up to 1

  Open Research Data

  open access

  • P. Pilarczyk

  - series: A database of global dynamics for a population model with harvesting

  This dataset contains selected results of rigorous numerical computations conducted in the framework of the research described in the paper "Global dynamics in a stage-structured discrete population model with harvesting" by E. Liz and P. Pilarczyk: Journal of Theoretical Biology, Vol. 297 (2012), pp. 148–165, doi: 10.1016/j.jtbi.2011.12.012.

• Conley-Morse graphs for a population model with harvesting. Case Ha-S1: Harvesting adults only, survival rates of juveniles and adults add up to 1

  Open Research Data

  open access

  • P. Pilarczyk

  - series: A database of global dynamics for a population model with harvesting

  This dataset contains selected results of rigorous numerical computations conducted in the framework of the research described in the paper "Global dynamics in a stage-structured discrete population model with harvesting" by E. Liz and P. Pilarczyk: Journal of Theoretical Biology, Vol. 297 (2012), pp. 148–165, doi: 10.1016/j.jtbi.2011.12.012.

• Conley-Morse graphs for a population model with harvesting. Case Ha-Se: Harvesting adults only, equal survival rates of juveniles and adults

  Open Research Data

  open access

  • P. Pilarczyk

  - series: A database of global dynamics for a population model with harvesting

  This dataset contains selected results of rigorous numerical computations conducted in the framework of the research described in the paper "Global dynamics in a stage-structured discrete population model with harvesting" by E. Liz and P. Pilarczyk: Journal of Theoretical Biology, Vol. 297 (2012), pp. 148–165, doi: 10.1016/j.jtbi.2011.12.012.

• Scattering Theory Summer School 2022

  e-Learning Courses

  • J. Szostak
  • J. Franz
  • M. Chmielecki
  • J. Borucka
  • M. Hoppe
  • M. Franz

  Summer school on Scattering Theory at Gdańsk University of Technology. 1 - 19 August online 22 - 26 August online or in Gdańsk (you choose) Participation is for free! Attractive fellowships!   More info and registration: https://ftims.pg.edu.pl/en/science-app/summer-schools-2022/scattering-theory  

• Bounds on isolated scattering number

  Publication

  • M. Jurkiewicz

  - Year 2021

  The isolated scattering number is a parameter that measures the vulnerability of networks. This measure is bounded by formulas de- pending on the independence number. We present new bounds on the isolated scattering number that can be calculated in polynomial time.

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• Bounds on isolated scattering number

  Publication

  • M. Jurkiewicz

  - ANZIAM JOURNAL - Year 2021

  The isolated scattering number is a parameter that measures the vulnerability of networks. This measure is bounded by formulas de- pending on the independence number. We present new bounds on the isolated scattering number that can be calculated in polynomial time.

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• The consideration to the dynamic systems parameter identification

  Publication

  • E. Mieloszyk
  • R. D. Gańko

  - International Journal of Modelling, Identification and Control - Year 2013

  In this paper, a concept for continuous-time dynamic systems parameter identification using modulating function approach is presented. It refers to linear as well as selected non-linear systems. It shows the possibility of direct application without converting differential equation. In particular cases direct application can decrease the amount of computation in non-linear system identification, which generally requires Fourier...

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• APPLIED MATHEMATICS AND COMPUTATION

  Journals

  ISSN: 0096-3003 , eISSN: 1873-5649

• Semantics for an Interdisciplinary Computation

  Publication

  • J. Zander
  • P. J. Mosterman

  - Year 2013

  Semantics for an interdisciplinary computation is becoming increasingly difficult to capture while dealing with multi-domain problems. Expertise from Computer Science, Computer Engineering, Electrical Engineering, and other disciplines merges as engineering challenges in modern systems, such as, Cyber-Physical Systems, Smart Cities, and Bionic Systems must be tackled in a methodological manner. In this paper, a paradigm for formalization...

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• Optimizing the computation of a parallel 3D finite difference algorithm for graphics processing units

  Publication

  • J. Porter-Sobieraj
  • S. Cygert
  • K. Daniel
  • J. Sikorski
  • M. Słodkowski

  - CONCURRENCY AND COMPUTATION-PRACTICE & EXPERIENCE - Year 2015

  This paper explores the possibilities of using a graphics processing unit for complex 3D finite difference computation via MUSTA‐FORCE and WENO algorithms. We propose a novel algorithm based on the new properties of CUDA surface memory optimized for 2D spatial locality and compare it with 3D stencil computations carried out via shared memory, which is currently considered to be the best approach. A case study was performed for...

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• Normalized Partial Scattering Cross Section for Performance Evaluation of Low-Observability Scattering Structures

  Publication

  • M. Abdullah
  • S. Kozieł
  • S. Szczepański

  - Electronics - Year 2021

  The development of diffusion metasurfaces created new opportunities to elevate the stealthiness of combat aircraft. Despite the potential significance of metasurfaces, their rigorous design methodologies are still lacking, especially in the context of meticulous control over the scattering of electromagnetic (EM) waves through geometry parameter tuning. Another practical issue is insufficiency of the existing performance metrics,...

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• Overall color parameter as a parameter determining the level of oxidation of olive oil

  Publication

  • A. Różańska
  • J. Namieśnik

  - World Scientific News - Year 2017

  Edible fats are an important part of a human daily diet. They have a significant effect on the proper functioning of the human body. During frying, the oil is chemically modified and the fats consumed should have the highest oxidation stability. The subject of the study were samples of olive oil bought at local markets in Gdansk. Samples were heated at 20 °C, 60 °C, 100 °C, 140 °C and 180 °C. The aim of the study was to determine...

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• FPGA computation of magnitude of complex numbers using modified CORDIC algorithm

  Publication

  • M. Czyżak
  • R. Smyk

  - Zeszyty Naukowe Wydziału Elektrotechniki i Automatyki Politechniki Gdańskiej - Year 2015

  In this work we present computation of the magnitude of complex numbers using a modified version of the CORDIC algorithm that uses only five iterations. The relationship between the computation error and the number of CORDIC iterations are presented for floating-point and integer arithmetics. The proposed modification of CORDIC for integer arithmetic relies upon the introduction of correction once basic computations are performed...

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• Journal of Chemical Theory and Computation

  Journals

  ISSN: 1549-9618 , eISSN: 1549-9626

• Mobile Cloud computing architecture for massively parallelizablegeometric computation

  Publication

  • V. Sánchez Ribes
  • H. Mora-Mora
  • A. Sobecki
  • F. José Mora Gimeno

  - COMPUTERS IN INDUSTRY - Year 2020

  Cloud Computing is one of the most disruptive technologies of this century. This technology has been widely adopted in many areas of the society. In the field of manufacturing industry, it can be used to provide advantages in the execution of the complex geometric computation algorithms involved on CAD/CAM processes. The idea proposed in this research consists in outsourcing part of the load to be com- puted in the client machines...

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• Paweł Możejko dr hab.

  People

  Instytut Fizyki i Informatyki Stosowanej, Zakład Fizyki Zderzeń Elektronowych

• Elementary gates for cartoon computation

  Publication

  • M. Czachor

  - Journal of Physics A-Mathematical and Theoretical - Year 2007

  Sformułowano elementarne bramki kwantowe, pozwalające tłumaczyć algorytmy kwantowe na język geometryczny.

  Full text available to download

• A macroscopic device for quantum computation

  Publication

  • D. Aerts
  • E. D'Hondt
  • B. D'Hooghe
  • M. Czachor
  • J. Dehaene
  • B. De Moor

  - INTERNATIONAL JOURNAL OF THEORETICAL PHYSICS - Year 2008

  Przeanalizowano mechaniczny model kwantowego układu 2-bitowego. Model jest zilustrowany algorytmem Deutscha i Arvinda.

• Computation of Cubical Steenrod Squares

  Publication

  • M. Krčál
  • P. Pilarczyk

  - Year 2016

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• Multiclass AdaBoost Classifier Parameter Adaptation for Pattern Recognition

  Publication

  • J. Dembski

  - Advances in Intelligent Systems and Computing - Year 2017

  The article presents the problem of parameter value selection of the multiclass ``one against all'' approach of an AdaBoost algorithm in tasks of object recognition based on two-dimensional graphical images. AdaBoost classifier with Haar features is still used in mobile devices due to the processing speed in contrast to other methods like deep learning or SVM but its main drawback is the need to assembly the results of binary...

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• Elastic scattering of electrons from chloroform

  Publication

  • B. Hlousek
  • M. F. Martin
  • M. Khakoo
  • M. Zawadzki
  • G. M. Moreira
  • L. S. Maioli
  • M. Bettega
  • L. Machado
  • V. A. S. d. Mata
  • A. J. da Silva... and 3 others

  - PHYSICAL REVIEW A - Year 2019

  We present experimental and theoretical cross sections for elastic electron scattering from CHCl3. This is an important target because of its relevance to environmental chemistry and the plasma etching industry as a source of chlorine radicals. The experimental results were obtained at incident electron energies ranging from 0.5 to 800 eV in the 10deg-130deg scattering angle range. Theoretically, the scattering cross sections in...

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• Application of the J-matrix method to multichannel scattering

  Publication

  • P. Syty
  • Ł. Redynk
  • J. E. Sienkiewicz

  - The European Physical Journal-Special Topics - Year 2013

  In this contribution we describe the multichannel extension to the nonrelativistic J-matrix method, and present differential cross sections for scattering of slow electrons from Argon atoms. Nonrelativistic phase shifts, then the S-matrix and the cross sections have been calculated using newly developed Fortran code, JMATRIX-MULTI.We applied the model Hartree-Fock potential as the scattering potential, which was truncated in the...

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• Magnetic switching of Kerker scattering in spherical microresonators

  Publication

  • G. P. Zouros
  • G. D. Kolezas
  • E. Almpanis
  • K. Baskourelos
  • T. Stefański
  • K. L. Tsakmakidis

  - Nanophotonics - Year 2020

  Magneto-optical materials have become a key tool in functional nanophotonics, mainly due to their ability to offer active tuning between two different operational states in subwavelength structures. In the long-wavelength limit, such states may be considered as the directional forward- and back-scattering operations, due to the interplay between magnetic and electric dipolar modes, which act as equivalent Huygens sources. In this...

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• Positron Scattering and Annihilation in Organic Molecules

  Publication

  • A. Karbowski
  • G. P. Karwasz
  • M. Franz
  • J. Franz

  - ACTA PHYSICA POLONICA B - Year 2020

  In this paper, we address the problem of connecting positron lifetimes in liquids with collision cross sections in gases. We present the analyses of annihilation lifetime spectra of positrons in the liquid benzene, c-hexane, n-hexane, methanol and ethanol and calculations of scattering cross sections of positrons with benzene and c-hexane in the gas phase.

  Full text available to download

• Modelling of Mechatronic Systems with Distributed Parameter Components

  Publication

  • C. Orlikowski
  • R. Hein

  - Year 2010

  The paper presents an uniform, port-based approach to modelling of both lumped and distributed parameter systems. Port-based model of distributed system has been defined by application of the bond graph methodology and the distributed transfer function method (DTFM). The proposed method of modelling enables to formulate input data for computer analysis by application of the DTFM. The computational package for the analysis of complex...

• A Stand for Measurement and Prediction of Scattering Properties of Diffusers

  Publication

  • A. Kurowski
  • D. Koszewski
  • J. Kotus
  • B. Kostek

  - Year 2018

  In this paper we present a set of solutions which may be used for prototyping and simulation of acoustic scattering devices. A system proposed is capable of measuring sound field. Also a way to use an open source solution for simulation of scattering phenomena occurring in proximity of acoustic diffusers is shown. The result of our work are measurement procedure and a prototype of the simulation script based on FEniCS - an open source...

  Full text to download in external service

• Elastic scattering of electrons by water: An ab initio study

  Publication

  • F. Triggiani
  • T. Morresi
  • S. Taioli
  • S. Simonucci

  - Frontiers in Materials - Year 2023

  In this work we devise a theoretical and computational method to compute the elastic scattering of electrons from a non-spherical potential, such as in the case of molecules and molecular aggregates. Its main feature is represented by the ability of calculating accurate wave functions for continuum states of polycentric systems via the solution of the Lippmann-Schwinger equation, including both the correlation effects and multi-scattering...

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• Nanoparticle-free tissue-mimicking phantoms with intrinsic scattering

  Publication

  • M. Wróbel
  • A. P. Popov
  • A. Bykov
  • V. Tuchin
  • M. Szczerska

  - Biomedical Optics Express - Year 2016

  We present an alternative to the conventional approach, phantoms without scattering nanoparticles, where scattering is achieved by the material itself: spherical cavities trapped in a silicone matrix. We describe the properties and fabrication of novel optical phantoms based on a silicone elastomer polydimethylsiloxane (PDMS) and glycerol mixture. Optical properties (absorption coefficient µa, reduced scattering coefficient µs',...

  Full text available to download

• Estimation of a smoothness parameter by spline wavelets

  Publication

  • N. Jarzębkowska
  • M. Meller

  - Applicationes Mathematicae - Year 2013

  We consider the smoothness parameter s*(f) of a function f∈L2(R) in terms of Besov spaces. The existing results on estimation of smoothness [K. Dziedziul, M. Kucharska and B. Wolnik, J. Nonparametric Statist. 23 (2011)] employ the Haar basis and are limited to the case 0

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• Low energy elastic electron scattering from benzonitrile (C6H5CN)

  Publication

  • G. Tatreau
  • B. Diaz
  • F. Alharthi
  • M. Zawadzki
  • M. Khakoo

  - Journal of Physics : Conference Series - Year 2020

  We present experimental differential elastic scattering cross sections (DCSs) for low energy electron scattering from benzonitrile along with integral and momentum-transfer cross sections that are determined from these DCSs. The measurements of DCSs are obtained using the relative flow method with helium as the standard gas, in a crossed electron-molecular gas beam arrangement. Our measurements are made at incident electron energies...

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• Consistency of Quantum Computation and the Equivalence Principle.

  Publication

  • M. Nowakowski

  - Foundations of Science - Year 2023

  The equivalence principle, being one of the building blocks of general relativity, seems to be crucial for analysis of quantum effects in gravity. In this paper we consider the relation between the equivalence principle and the consistency of quantum information processing in gravitational field. We propose an analysis with a looped evolution consisting of steps both in the gravitational field and in the accelerated reference frame....

  Full text available to download

• Maciej Wróbel dr inż.

  People

  Department of Metrology and Optoelectronics

  Received PhD from Gdańsk University of Technology in 2019. Research interests involve non-invasive applications of Raman spectroscopy for tissue analysis, specifically blood parameters measurements. Tissue mimicking phantoms, measurement of optical properties (scattering, absorption), as well as other optical sensing methods. Raman spectroscopy and surface-enhanced Raman spectroscopy (SERS) utilized for measurements of biological...

• Low energy differential elastic electron scattering from trichloromethane

  Publication

  • B. Diaz
  • G. Tatreau
  • B. Hlousek
  • M. Zawadzki
  • M. Khakoo

  - Journal of Physics : Conference Series - Year 2020

  Experimental differential cross sections for low energy electron scattering from trichloromethane is measured utilizing a crossed electron-molecular beam experiment via the relative flow method, for the incident electron energies in the range of E = 0.5 eV-30 eV and the scattering angles in the range of θ = 10◦ − 130◦ .

  Full text available to download

• Polarisation effects in low-energy positron–molecule scattering

  Publication

  • J. Franz
  • K. Baluja
  • R. Zhang
  • J. Tennyson

  - NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS - Year 2008

  The UK molecular R-matrix method has been adapted to treat positron collisions from polyatomic targets. A simple empirical enhancement factor which corrects for the underestimation of electron–positron polarisation and correlation effects in the calculations performed with the static-plus-polarization model at low scattering energies is presented. Application of this model to positron scattering from carbon dioxide at energies...

  Full text to download in external service

• Hybrid, Approximate Models of Distributed-Parameter Systems

  Publication

  • C. Orlikowski
  • R. Hein

  - Year 2010

  The paper introduces the method of distributed-parameter systems modelling. It enables to obtain low order modal model of the system that experiences Coriolis acceleration component and gyroscopic effect. In such cases, corresponding system equations are non-self-adjoined. To solve this problem modal reduced model is built up for the system without Coriolis acceleration or gyroscopic effect terms. These phenomena are next included...

• Methylation effect in e−— scattering on methyl-substituted ethylenes

  Publication

  • S. Stefanowska-Tur
  • C. Szmytkowski
  • E. Ptasińska-Denga
  • P. Możejko

  - Journal of Physics : Conference Series - Year 2020

  Methylation effect has been observed and studied in electron-scattering from selected hydrocarbon molecules. In measured total cross section (TCS) functions we have noticed energy shifts and changes in the intensity of observed structures.

  Full text available to download

• Low-energy positron collisions with water: elastic and rotationally inelastic scattering

  Publication

  • K. Baluja
  • R. Zhang
  • J. Franz
  • J. Tennyson

  - JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS - Year 2007

  Differential, integral and momentum transfer cross sections for the vibrationally elastic and rotationally inelastic scattering of positrons from water at low collision energy (E ≤ 10 eV) are reported. Several models within the R-matrix method are used to compute the body-fixed T-matrices, while the scattering calculations are performed within the fixed-nuclei approximation corrected with the standard Born-closure formula. These...

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• Application of the numerical-analytic method for systems of differential equations with parameter

  Publication

  • T. Jankowski

  - Ukrainian Mathematical Journal - Year 2002

  The numerical-analytic method is applied to systems of differential equations with parameter under the assumption that the corresponding functions satisfy the Lipschitz conditions in matrix notation. We also obtain several existence results for problems with deviations of an argument

• Graph Approach to the Computation of the Homology of Continuous Maps

  Publication

  • K. Mischaikow
  • M. Mrozek
  • P. Pilarczyk

  - FOUNDATIONS OF COMPUTATIONAL MATHEMATICS - Year 2005

  Full text to download in external service

• 1.21 Computation of Structure, Dynamics, and Thermodynamics of Proteins

  Publication

  • S. OŁdziej
  • C. Czaplewski
  • A. Liwo
  • J. Vila
  • H. Scheraga
  • C. Czaplewski

  - Year 2012

  Full text to download in external service

• Accurate Computation of IGBT Junction Temperature in PLECS

  Publication

  • P. Górecki
  • D. Wojciechowski

  - IEEE TRANSACTIONS ON ELECTRON DEVICES - Year 2020

  In the article, a new method to improve the accuracy of the insulated-gate bipolar transistor (IGBT) junction temperature computations in the piecewise linear electrical circuit simulation (PLECS) software is proposed and described in detail. This method allows computing the IGBT junction temperature using a nonlinear compact thermal model of this device in PLECS. In the method, a nonlinear compact thermal model of the IGBT is...

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• KOLMOGOROV EQUATION SOLUTION: MULTIPLE SCATTERING EXPANSION AND PHOTON STATISTICS EVOLUTION MODELING

  Publication

  • M. Guirao Galcera
  • S. Leble

  - TASK Quarterly - Year 2014

  We consider a formulation of the Cauchy problem for the Kolmogorov equation which corresponds to a localized source of particles to be scattered by a medium with a given scattering amplitude density. The multiple scattering amplitudes are introduced and the corresponding series solution of the equation is constructed. We investigate the integral representation for the first series terms, its estimations and values of the photon...

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• [NF] Physical Research Methods III: Scattering Theory

  e-Learning Courses

  • J. Franz

  {mlang pl} Dyscyplina: NF Zajęcia obowiązkowe dla doktorantów II i III roku Prowadzący:  Prof. Simone Taioli Liczba godzin: 15 Forma zajęć: wykład/seminarium {mlang} {mlang en} Discipline: NF Obligatory course for 2-nd and 3-rd year PhD students Academic teacher: Prof. Simone Taioli  Total hours of training: 15 teaching hours Course type: lecture/seminar {mlang}    

• Convergence of Monte Carlo algorithm for solving integral equations in light scattering simulations

  Publication

  • M. Kraszewski
  • J. Pluciński

  - OPTICA APPLICATA - Year 2020

  The light scattering process can be modeled mathematically using the Fredholm integral equation. This equation is usually solved after its discretization and transformation into the system of algebraic equations. Volume integral equations can be also solved without discretization using the Monte Carlo (MC) algorithm, but its application to the light scattering simulations has not been sufficiently studied. Here we present implementation...

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• Port-Based Modelling of Distributed-Lumped Parameter Systems

  Publication

  • C. Orlikowski
  • R. Hein

  - Solid State Phenomena - Year 2010

  There in the paper is presented an uniform, port-based approach to modelling of both lumped and distributed parameter systems. Port-based model of the distributed system has been defined by application of bond graph methodology and distributed transfer function method (DTFM). The approach proposed combines versatility of port-based modelling and accuracy of distributed transfer function method. The concise representation of lumped-distributed...

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• Scattering and Propagation Analysis for the Multilayered Structures Based on Field Matching Technique

  Publication

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

  - Year 2019

  A semi-analytical method is employed to the analysis of scattering and guiding problems in multilayer dielectric structures. The approach allows to investigate objects with arbitrary convex cross section and is based on the direct field matching technique involving the usage of the field projection at the boundary on a fixed set of orthogonal basis functions. For the scattering problems the scattered field in the far zone is calculated...

  Full text available to download

• Computational algorithm for the analysis of mechatronic systems with distributed parameter elements

  Publication

  • C. Orlikowski
  • R. Hein
  • R. Cyran

  - Year 2010

  The paper presents a systematic computational package for analysis of complex systems composed of multiple lumped and distributed parameter subsystems. The algorithm is based on the transfer function method (DTFM). With this algorithm, a bond graph technique for the modelling is developed to simplify computations. Analysis of different systems requires only changing the inputs data in the form of the bond graph diagram

• Low to intermediate energy elastic electron scattering from dichloromethane (CH2Cl2)

  Publication

  • B. Hlousek
  • M. Martin
  • M. Zawadzki
  • M. Khakoo
  • L. Machado
  • R. Lucchese
  • V. A. S. da Mata
  • I. Iga
  • M. Lee
  • M. Homem

  - JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS - Year 2019

  We report a theoretical-experimental investigation of electron scattering by dichloromethane (CH2Cl2) in the low- and intermediate energy ranges. Experimental elastic differential cross sections (DCS), in the incident electron energy range of 0.5-800 eV and scattering angle range of 10°–130°, were measured using a crossed beam relative flow technique. Integral and momentum- transfer cross sections were determined from the experimental...

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• Positron scattering on molecular hydrogen: Analysis of experimental and theoretical uncertainties

  Publication

  • K. Fedus
  • J. Franz
  • G. P. Karwasz

  - PHYSICAL REVIEW A - Year 2015

  Experiments performed in recent years on positron scattering from molecular hydrogen indicated a rise of the total cross section in the limit of zero energy, but essentially disagree on the amplitude of this rise. Mitroy and collaborators [J.-Y. Zhang et al., Phys. Rev. Lett. 103, 223202 (2009)] predicted a scattering length somewhat different from values deduced experimentally. Using a Markov chain Monte Carlo modified effective...

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• Application of the Monte Carlo algorithm for solving volume integral equation in light scattering simulations

  Publication

  • M. Kraszewski
  • J. Pluciński

  - OPTICA APPLICATA - Year 2020

  Various numerical methods were proposed for analysis of the light scattering phenomenon. Important group of these methods is based on solving the volume integral equation describing the light scattering process. The popular method from this group is the discrete dipole approximation (DDA). DDA uses various numerical algorithms to solve the discretized integral equation. In the recent years, the application of the Monte Carlo (MC)...

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• Low energy differential elastic electron scattering from acetonitrile (CH3CN)

  Publication

  • M. Zawadzki
  • M. Khakoo

  - JOURNAL OF CHEMICAL PHYSICS - Year 2018

  Measurements of elastic differential cross sections for electron scattering from acetonitrile (CH3CN) have been performed utilizing a crossed electron-molecular beam experiment and with the relative flow method, for the incident electron energy range of 0.7 eV–30 eV and the scattering angle range of 10◦–130◦. These differential cross sections have been used to calculate the elastic integral and momentum- transfer cross sections,...

  Full text available to download