• n-ary hyperstructures constructed from binary quasi-ordered semigroups 

  Novák, Michal (Ovidius University, 2014-05-10)

  Based on works by Davvaz, Vougiouklis and Leoreanu-Fotea in the field of n-ary hyperstructures and binary relations we present a construction of n-ary hyperstructures from binary quasi-ordered semigroups. We not only ...

• Persistence of periodic orbits in periodically forced impact systems 

  Fečkan, Michal; Pospíšil, Michal (De Gruyter Open, 2014-02-01)

  This paper is devoted to the study of persistence of forced periodic solutions for impact systems from single periodic solutions of unperturbed impact equations. An example of planar discontinuous ordinary differential ...

• Towards an Optimal Interest Point Detector for Measurements in Ultrasound Images 

  Zukal, Martin; Beneš, Radek; Číka, Petr; Říha, Kamil (Versita Open, 2013-12-16)

  This paper focuses on the comparison of different interest point detectors and their utilization for measurements in ultrasound (US) images. Certain medical examinations are based on speckle tracking which strongly relies ...

• Analysis and Synthesis of Chaotic Circuits Using Memristor Properties 

  Hruboš, Zdeněk; Götthans, Tomáš (FEI STU, 2014-06-01)

  This paper provides an innovative practical realization of a memristor based chaotic circuit. The first part discusses the mathematical analysis of the proposed system, including calculation of an eigenvalues, bifurcation ...

• Unsupervised Pathological Area Extraction Using 3D T2 and FLAIR MR Images 

  Dvořák, Pavel; Bartušek, Karel; Smékal, Zdeněk (Walter de Gruyter, 2014-11-20)

  This work deals with fully automated extraction of brain tumor and edema in 3D MR volumes. The goal of this work is the extraction of the whole pathological area using such an algorithm that does not require a human ...

• Automatic Brain Tumor Detection in T2-weighted Magnetic Resonance Images 

  Dvořák, Pavel; Kropatsch, Walter G.; Bartušek, Karel (Versita Open, 2013-11-02)

  This work focuses on fully automatic detection of brain tumors. The first aim is to determine, whether the image contains a brain with a tumor, and if it does, localize it. The goal of this work is not the exact segmentation ...

• New double current controlled CFA (DCC-CFA) based voltage-mode oscillator with independent electronic control of oscillation condition and frequency 

  Šotner, Roman; Herencsár, Norbert; Jeřábek, Jan; Dvořák, Radek; Kartci, Aslihan; Dostál, Tomáš; Vrba, Kamil (FEI STU, 2013-03-27)

  In this paper, a new electronically tunable quadrature oscillator (ETQO) based on two modified versions of current feedback amplifiers (CFAs), the so called double current controlled CFA (DCC-CFAs) is presented. The frequency ...

• Analog Multipliers-Based Double Output Voltage Phase Detector for Low-Frequency Demodulation of Frequency Modulated Signals 

  Šotner, Roman; Polák, Ladislav; Jeřábek, Jan; Petržela, Jiří; Kledrowetz, Vilém (IEEE, 2021-06-25)

  This work deals with the design of a simple double output voltage phase detector, using a specific type of analog multiplier, and its application in a frequency demodulator. The design of active parts was performed in ...

• Characterization of the native oxide on CdTe surfaces 

  Sobola, Dinara; Kaspar, Pavel; Nebojsa, Alois; Hemzal, Dušan; Grmela, Lubomír; Smith, Steve J. (Sciendo, 2019-05-29)

  This study focuses on the description of oxidation of CdTe monocrystal surfaces after selective chemical etching. Measurements of surface morphology of the oxides occurring in short time are valuable for deeper understanding ...

• Characterization of nanoblisters on HOPG surface 

  Sobola, Dinara; Papež, Nikola; Dallaev, Rashid; Ramazanov, Shihgasan; Hemzal, Dušan; Holcman, Vladimír (De Gruyter OPEN, 2019-08-07)

  We report on influence of the surface functionalization on the properties of highly oriented pyrolytic graphite. The samples were processed in nitric acid and characterized by XPS, Raman and EDX spectroscopies, AFM, SEM ...

• A novel temperature controller for in-situ measurement of radiation-induced changes in temperature effects on space electronics 

  Háze, Jiří; Hofman, Jiří (FEI STU Bratislava, 2019-07-15)

  The paper discusses a novel temperature controller and a related test method allowing in-situ measurement of totalionising dose-induced changes in the impact of temperatureon electronic devices for space applications. ...

• Experimental Measurement of Nanolayers via Electromagnetic, Near Infrared, and Gamma Radiation 

  Fiala, Pavel; Bartušek, Karel; Dědková, Jarmila; Kadlec, Radim; Dohnal, Přemysl (https://content.sciendo.com/configurable/contentpage/journals$002fmsr$002f19$002f4$002farticle-p144.xml, 2019-07-30)

  We discuss and compare the results obtained from experimental measurements of a two-layer, Ni and TiO2 nanometric structure deposited on siliceous glass. Utilizing previous theoretical models of multilayers or periodic ...

• Tracking Filter Design for Predictive Maintenance of Jet Engine - Different Approaches and Their Comparison 

  Kunz, Jan; Čala, Martin; Pikula, Stanislav; Beneš, Petr (Sciendo, 2018-12-26)

  The aim of this paper is to design, implement, test and compare several tracking filtration methods for predictive maintenance of a jet engine. Based on literature review multiple possible methods are described. Appropriate ...

• Low-power ASIC suitable for miniaturized wireless EMG systems 

  Kledrowetz, Vilém; Prokop, Roman; Fujcik, Lukáš; Pavlík, Michal; Háze, Jiří (Slovenska Technika Univerzita, 2019-11-26)

  Nowadays, the technology advancements of signal processing, low-voltage low-power circuits and miniaturized circuits have enabled the design of compact, battery-powered, high performance solutions for a wide range of, ...

• Influence of heat flow direction on solder ball interfacial layer 

  Otáhal, Alexandr; Szendiuch, Ivan (2018-09-19)

  This paper deals with the research of an intermetallic layer of SAC305 solder balls soldered from three directions of the heat flow in the ball-attach process for BGA package. From the point of view of the heat flow ...

• Visual Diagnosis of the Varroa Destructor Parasitic Mite in Honeybees Using Object Detector Techniques 

  Bilík, Šimon; Kratochvíla, Lukáš; Ligocki, Adam; Boštík, Ondřej; Zemčík, Tomáš; Hýbl, Matouš; Horák, Karel; Žalud, Luděk (MDPI, 2021-04-14)

  The Varroa destructor mite is one of the most dangerous Honey Bee (Apis mellifera) parasites worldwide and the bee colonies have to be regularly monitored in order to control its spread. In this paper we present an object ...

• On a class of difference equations withinterlacing indices 

  Stevič, Stevo; El-Sayed, Ahmed; Kosmala, Witold; Šmarda, Zdeněk (Springer, 2021-06-16)

  Some results on the long-term behavior of solutions to a class of difference equations,which includes numerous nonlinear difference equations of various orders thatattracted some attention in the last 15 years, are presented. ...

• Optimal Approximation of Fractional-Order Butterworth Filter Based on Weighted Sum of Classical Butterworth Filters 

  Mahata, Shibendu; Herencsár, Norbert; Kubánek, David (IEEE, 2021-06-02)

  In this paper, a new two-steps design strategy is introduced for the optimal rational approximation of the fractional-order Butterworth filter. At first, the weighting factors of the summation between the nth -order and ...

• Developing an Unreal Engine 4-Based Vehicle Driving Simulator Applicable in Driver Behavior Analysis—A Technical Perspective 

  Michalík, David; Jirgl, Miroslav; Arm, Jakub; Fiedler, Petr (MDPI, 2021-04-01)

  In this paper, we emphasize understanding the driver’s control performance via obtaining valuable data and relevant characteristics using an in house-designed, laboratory-built vehicle driving simulator. This simulator ...

• A System Using Artificial Intelligence to Detect and Scare Bird Flocks in the Protection of Ripening Fruit 

  Marcoň, Petr; Janoušek, Jiří; Pokorný, Josef; Novotný, Josef; Vlachová Hutová, Eliška; Širůčková, Anna; Čáp, Martin; Lázničková, Jana; Kadlec, Radim; Raichl, Petr; Dohnal, Přemysl; Steinbauer, Miloslav; Gescheidtová, Eva (MDPI, 2021-06-20)

  Flocks of birds may cause major damage to fruit crops in the ripening phase. This problem is addressed by various methods for bird scaring; in many cases, however, the birds become accustomed to the distraction, and the ...

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