This paper researches the influence of the placement during the 3D printing process on the quality of the final product. The tensile tests were carried out on standard dog-bone specimens, which were printed both horizontally or vertically with three orientation angles 0°, 45°, 90°&...

We consider acoustic wave propagation in periodic scaffolds saturated by inviscid fluid at rest. To analyze the wave dispersion, two approaches are examined: the periodic homogenization (PH) and the Floquet-Bloch wave decomposition (FB). While PH gives dispersion-less response, the FB method ...

This paper aims to the modelling and investigation of sub-synchronous vibrations of a rotor supported on poorly lubricated journal bearings. Bores for an oil supply are located in the lower halves of bearing shells. It is shown that the poor lubrication of the described bearin...

For a class of objects with a well-defined isomorphism relation the isomorphism problem asks to determine the algorithmic complexity of the decision whether two given objects are, or are not, isomorphic. Theorems by Steinitz (1916), Whitney (1933) and Mani (1971) show that the isom...

Acoustic waves in a poroelastic medium with periodic structure are studied with respect to permanent seepage flow which modifies the wave propagation. The homogenization method provides the macroscopic equations governing the dynamic response of an effective medium. whose the properties are ...

We compare two homogenized models of the microcirculation which rely on different assumptions. The first model has been derived by the homogenization of the mesoscopic structure with the double-porosity medium represented by the Biot model with large contrasts in the permeability coefficient...

This work focuses on the improvement of the impact protection of a motorcyclist protective equipment under the influence of higher temperature. A created composite shell was added to a foam shoulder protector SAS-TEC SCL-2. A drop test was carried out for protector itself and ...

This work is focused on the identification of mechanical properties of a composite from tension, compression and bending tests according to ASTM standards. Selected stiffness and strength parameters were identified. The composite, which was made from KORDCARBON-CPREG-200-T-3K-EP1-42-A prepreg, consists...

In this paper, we are presenting a method and a tool that allows detecting duplicity in the heap dump of a Java application, based on the shallow and deep object comparison. The tool allows to identify the problematic instances in the memory and thus helps programmers...

Diabetic patient desires to avoid hypo- and hyperglycemic episodes, which result from insufficient insulin production. As the diabetes disease progresses, it requires an advance control of external insulin administration with an insulin pump. Given the importance of blood-glucose level prediction ...

This paper deals with a design of wireless proximity sensing between the stator and rotor of a steam turbine during a final steps of an assembly. The result of this assembly process is an optimal setting of the seal which affects overall turbine efficiency. An innovative&...

The type of environment plays an essential role in mobile robotics. Autonomous robots usually work in static and single type environments. Unfortunately, in the real world, there are many situations when the type of the environment changes. This paper deals with the design of ...

visualization) of 3D geographical data, his or her first reaction is usually very positive. However, after a second look or a longer work with the 3D GIS, the user sometimes realizes no or minimal added value, accompanied by unsolicited complexity caused by the need to ha...

In this paper, we continue to investigate the use of classifiers for the automatic detection of glottal closure instants (GCIs) in the speech signal. We introduce context to extreme gradient boosting (XGBoost) and show that the context-aware XGBoost outperforms its context-free version. ...

This paper concentrates on the design and evaluation of the method that would be able to automatically correct the spelling of i/y in the Czech words at the output of the ASR decoder. After analysis of both the Czech grammar rules and the data, we have decided&#...

This paper describes experiments on speech segmentation by using bidirectional LSTM neural networks. The networks were trained on various languages (English, German, Russian and Czech), segmentation experiments were performed on 4 Czech professional voices. To be able to use various combinations&...

Turbine-generator torsional vibration is linked to electrical events in the power grid by the generator air-gap torque. Modern power systems are subject to gradual transformation by increasing flexibility demands and incorporation of renewable resources. As a result, electrical transient events a...

Building accurate knowledge of the identity, the geographic distribution and the evolution of species is essential for the sustainable development of humanity, as well as for biodiversity conservation. However, the difficulty of identifying plants and animals in the field is hindering the&#x...

Annotating a dataset for training a Supervised Machine Learning algorithm is time and annotator’s attention intensive. Our goal was to create a tool that would enable us to create annotations of the dataset with minimal demands on expert’s time. Inspired by applications such as...

Energy environment is proceeding significant changes, which establish new market arrangements following by penetration of novel technological trends. The complexity of the environment is rapidly increasing. Novel market arrangements brings unprecedented opportunities to prosumers for commercialization of their&...