The computational complexity of the graph isomorphism problem is considered to be a major open problem in theoretical computer science. It is known that testing isomorphism of chordal graphs is polynomial-time equivalent to the general graph isomorphism problem. Every chordal graph can ...

This paper studies the interaction of laser-driven γ photons and high-energy charged particles with high-Z targets through Monte Carlo simulations. The interacting particles are taken from particle-in-cell simulations of the interaction of a tightly focused ultra-intense laser pulse with a titani...

We deal with efficient techniques for numerical simulation of the incompressible fluid flow based on the Navier–Stokes equations discretized using the isogeometric analysis approach. Typically, the most time-consuming part of the simulation is solving the large saddle-point type linear systems ar...

Radial tilt-pad journal bearings are used to support machinery with journals of high circumferential speed. A unique design of these bearings prevents the formation of oil-induced instability. However, the design allows for so-called pad spragging and fluttering, which can damage bearing&#x...

This paper deals with cross-lingual sentiment analysis in Czech, English and French languages. We perform zero-shot cross-lingual classification using five linear transformations combined with LSTM and CNN based classifiers. We compare the performance of the individual transformations, and in addition...

This paper describes the experimental evaluation of several attribution methods on two NLP tasks: Sentiment analysis and multi-label document classification. Our motivation is to find the best method to use with Transformers to interpret model decisions. For this purpose, we introduce two&#x...

The work is aimed to the numerical modeling of low-velocity impact and validation of the hyperplastic material model with damage designed by authors for modeling of woven composites and implemented into commercial FEM software Abaqus. The woven composite plates were subjected to the...

The study focuses on minimally invasive fixation techniques of sacral bone fractures by means of the transiliac internal fixator (TIFI). Several implementations of TIFI for unilateral transforaminal fracture treatment are studied both experimentally and computationally. The comparison of fixation tech...

We describe a single-sided crank-based cycling powermeter intended for mountainbike (MTB) use. The device is based on a printed circuit board (PCB) supplied by its manufacturer, but its assembly differs from the official instructions. The main difference is that the strain gauges are&#x...

This paper presents a transient analysis of the motion of unloaded upper pads in a tilting pad journal bearing. It is known that such pads can exhibit self-excited vibration called pad fluttering, which can initiate fatigue damage due to elastic contacts between the fluttering ...

This work presents a novel method for image-to-image translation named X-Bridge. The method is based on a conditional adversarial network. X-Bridge is a supervised method build upon the Pix2pix approach, however, it extends the original system with an additional reconstruction path and ...

This paper presents methods that were utilized in the ImageCLEFcoral 2020 challenge. The challenge contains two following subtasks: automatic coral reef annotation and localization, and automatic coral reef image pixel-wise parsing. In the first subtask, we tested two methods - SSD, and ...

This paper deals with multi-lingual dialogue act (DA) recognition. The proposed approaches are based on deep neural networks and use word2vec embeddings for word representation. Two multi-lingual models are proposed for this task. The first approach uses one general model trained on the...