81 citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Polish Academy of SciencesPL26 papers
- University of WarsawPL21 papers
- Brno University of TechnologyCZ14 papers
- Institute of MathematicsPL12 papers
- Institute of PhysicsPL12 papers
- National Institute of Technology DurgapurIN12 papers
- Warsaw University of TechnologyPL11 papers
- Institute of High Pressure PhysicsPL8 papers
- Jagiellonian UniversityPL7 papers
- Institute of Nuclear Physics, Polish Academy of SciencesPL6 papers
- University of Silesia in KatowicePL6 papers
- Częstochowa University of TechnologyPL5 papers
19 papers · 1 filter
Properties of graphene deposited on GaN nanowires: influence of nanowire roughness, self-induced nanogating and defects
Jakub Kierdaszuk, Piotr Kaźmierczak, Justyna Grzonka +8
We present detailed Raman studies of graphene deposited on gallium nitride nanowires with different variations in height. Our results show that different density and height of nano…
QTM: computational package using MPI protocol for quantum trajectories method
Marek Sawerwain, Joanna Wiśniewska
The Quantum Trajectories Method (QTM) is one of {the} frequently used methods for studying open quantum systems. { The main idea of this method is {the} evolution of wave functions…
On regular periodic solutions to the Navier-Stokes equations
Wojciech M. Zajaczkowski
We find a global a priori estimate for solutions to the Navier-Stokes equations with periodic boundary conditions guaranteeing in view of the Serrin type condition the existence of…
Face Recognition Based on Sequence of Images
Jacek Komorowski, Przemyslaw Rokita
This paper presents a face recognition method based on a sequence of images. Face shape is reconstructed from images using a combination of structure-from-motion and multi-view ste…
Surface-enhanced Raman scattering in graphene deposited on AlGaN/GaN axial heterostructure nanowires
Jakub Kierdaszuk, Mateusz Tokarczyk, Krzysztof M. Czajkowski +11
The surface-enhanced Raman scattering in graphene deposited on AlxGa1-xN/GaN axial heterostructure nanowires was investigated. The intensity of graphene Raman spectra was found not…
Deep Recurrent Neural Networks for ECG Signal Denoising
Karol Antczak
Electrocardiographic signal is a subject to multiple noises, caused by various factors. It is therefore a standard practice to denoise such signal before further analysis. With adv…
On some regularity criteria for axisymmetric Navier-Stokes equations
Joanna Rencławowicz, Wojciech M. Zajączkowski
We point out some criteria that imply regularity of axisymmetric solutions to Navier-Stokes equations. We show that boundedness of $\|{v_{r}}/{\sqrt{r^3}}\|_{L_2({\rm R}^3\times (0…
Molecular ordering of nematic liquid crystals in tubular nanopores: Tailoring of optical anisotropy at the nanoscale by polymer pore-surface grafting
A. V. Kityk, P. Huber, K. Sentker +7
The optical polarimetry technique is used to explore molecular ordering of nematic liquid crystals 5FPFFPP3 embedded in parallel cylindrical channels of alumina membranes with pore…
Influence of strong-coupling and retardation effects on superconducting state in compound
A. M. Bujak, K. A. Szewczyk, M. Kostrzewa +2
In the framework of strong-coupling formalism, we have calculated the thermodynamic parameters of superconducting state in the compound. The values of critical tempe…
Cooperative system of emission source localization based on SDF
Jan M. Kelner
Efficient and precise location of emission sources in an urbanized environment is very important in electronic warfare. Therefore, unmanned aerial vehicles (UAVs) are increasingly…
BER measurements in the evaluation of operation correctness of VSAT modem traffic interfaces
Jan M. Kelner, Bogdan Uljasz, Leszek Nowosielski
This paper presents using bit error rate (BER) measurements to evaluate operation correctness of traffic (input-output) interfaces in modem of very small aperture terminal (VSAT).…
Correlation properties of signal at mobile receiver for different propagation environments
Cezary Ziolkowski, Jan M. Kelner, Leszek Nowosielski
An issue of the parameter selection in various branches of a multi-antenna receiver system determines its effectiveness. A significant effect on these parameters are correlation pr…
Modeling power angle spectrum and antenna pattern directions in multipath propagation environment
Jan M. Kelner, Cezary Ziolkowski
Most propagation models do not consider the influence of antenna patterns on the parameters and characteristics of received signals. This assumption is equivalent to the use of iso…
Path loss model modification for various gains and directions of antennas
Jan M. Kelner, Cezary Ziolkowski
Emerging telecommunication technologies like 5G, green communications, and massive MIMO contribute to the use of directional antennas and beamforming. For this reason, modern propa…
Evaluation of angular dispersion for various propagation environments in emerging 5G systems
Jan M. Kelner, Cezary Ziolkowski, Bogdan Uljasz
Angular dispersion is the effect of a multi-path propagation observed in received signals. An assessment of this phenomenon is particularly important from the viewpoint of emerging…
Comparison of angular spread for 6 and 60 GHz based on 3GPP standard
Jan M. Kelner, Cezary Ziolkowski, Bogdan Uljasz
In an urban environment, a multipath propagation is one of the basic phenomena affecting a quality of received signals. This causes dispersions in time and angular domains. Basic p…
Modeling the distribution of the arrival angle based on transmitter antenna pattern
Cezary Ziolkowski, Jan M. Kelner, Leszek Nowosielski +1
An angular distribution of received signals has a significant impact on their spectral and correlational properties. Most of angular dispersion models do not consider antenna patte…
Statistical evaluation of the azimuth and elevation angles seen at the output of the receiving antenna
Cezary Ziolkowski, Jan M. Kelner
A method to evaluate the statistical properties of the reception angle seen at the input receiver that considers the receiving antenna pattern is presented. In particular, the impa…
Radio bearing of sources with directional antennas in urban environment
Cezary Ziolkowski, Jan M. Kelner
This paper focuses on assessing the limitations in the direction-finding process of radio sources with directional antennas in an urbanized environment, demonstrating how signal so…