Pavel Tomasek

• Doctor of Philosophy
• Senior Lecturer at Tomas Bata University in Zlín

The article deals with the issue of evaluation of the causes of accidents at level crossings in the Czech Republic, including the prediction of the development and proposals of measures for prevention and thus reduction of their number. The goal of this work is to verify the hypothesis that the number of accidents at level crossings in the Czech Re...

Compliance with the principles of occupational safety and health is one of the preconditions for avoiding emergency events. Without a doubt, this is one of the underlying duties of every employer or operator of waste recycling centers. The risk to health resulting from an orphan source of ionizing radiation in the form of scrap metal is quite high...

Occupational safety and health belong to fundamental human rights. This fully applies to the protection of employees and other persons, which operate or are located in facilities for the collection of scrap metal. The founder of the landfill or the employer has an irreplaceable place in the field of protection of persons against the effects of ioni...

This article is focused on the creation of a data model of an information system to support the processes of population sheltering (PoS). PoS processes have undergone significant changes in the Czech Republic. The PoS system was transformed for the use of improvised shelters. For sustainable PoS, it is necessary to standardize the approach of crisi...

High quality pseudorandom number generators were needed in many software solutions throughout the history of programming. Nowadays, these generators play an even more significant role in software development. Generally, these generators bring a certain level of coincidence in some algorithms which need it. This work focuses on the statistical evalu...

Camera traps are increasingly one of the fundamental pillars of environmental monitoring and management. Even outside the scientific community, thousands of camera traps in the hands of citizens may offer valuable data on terrestrial vertebrate fauna, bycatch data in particular, when guided according to already employed standards. This provides a p...

The development of science and technology brings new tools to improve security features on banknotes as well as methods to verify their authenticity. This development also expands the technical possibilities for money counterfeiting. The paper deals with the experimental examination of selected protective elements - paper and inks used on euro bank...

Recently, the interest in development of service robots highly increases. The annual turnover in this area is estimated to a number close to 17 milliard Euro in the past years. The annual turnover could rise to 0.1 billion Euro by 2020 by IFR considering 30 % growth every year. Investments are expected to flow into all areas related to service robo...

The expanding capabilities of today’s microcontrollers and other devices lead to an increased utilization of these technologies in diverse fields. The automation and issue of remote control of moving objects belong to these fields. In this project, a microcontroller Raspberry Pi 2B was chosen for controlling DC motors and servo-motors. This paper p...

This work is aimed at a preliminary design and implementation of a system solving the inverse problem of reconstruction of relative permittivities of several dielectric layers. Computations are based on real measurements of the transmission and reflection coefficients in free space using higher frequencies (millimetre and sub-millimetre waves). How...

This work is presenting a technique of automated design of a Frequency Selective Surface aimed at shielding wireless communication under a very new standard of IEEE 802.11ah. This standard is primarily focused on rapidly growing network of communicating electrical devices called Internet of Things. Shielding of such a communication can be, in certa...

This paper is focused on current possibilities of the measurement and predictions of intense convective precipitation through the mobile meteorological radar (MMR50). This meteorological radar equipment is part of the Information, Notification and Warning system of the Zlin Region in the Czech Republic, which consists of information and communicati...

This work aims at comparison of some traditional evolutionary algorithms (GA, DE, PSO) used in the computation and optimization of transmission coefficients of waveguide filters and in the estimation of the permittivity formed by multi-sectional diaphragms in a waveguide of rectangular cross-section.

This paper describes an interesting approach aimed at analysis of material properties. This work is based on simulated measurements of transmission coefficients of multi-layered materials. These measurements (in a waveguide) are taken as a product of a certain situation, therefore there is an inverse problem in which we try to estimate the original...

Owing to the recent research a method of estimating transmission coefficients for a waveguide of rectangular cross-section loaded with multi-layered parallel-plane dielectrics is found. Consequently, the analysis of the transmitted and reflected fields in terms of the scattering matrix formalism can be performed explicitly. This article is mainly b...

This article presents a technique for analysis and automated design of frequency selective surfaces. The approach allows to automate the whole process of the filter design and frees the users from the detailed knowledge of the filter design theory. Whole process of automation is implemented in Matlab. An optimisation of a band-stop filter for Wi-Fi...

This work aims at description of the optimization process of frequency selective surfaces. The method of moments is used to analyze the planar periodic structure and thus to estimate the corresponding transmission coefficients. The algorithm of Levenberg-Marquardt is chosen as a local optimization method. The approach of combination of the method o...

The paper presents results of measurements conductivity of carbon fibers from DC to 13 GHz. The measurements were performed on the microstrip measurement line, where a section of the line is made from a flat tow of carbon fibers. Physical conductivity of carbon fibers is derived from the measured value of S21 of the section of microstrip line in tw...

This work aims at computation and optimization of transmission coefficients of waveguide filters formed by one- or multi-sectional diaphragms in a waveguide of rectangular cross-section. An approach for designing band-stop and band-pass filters is proposed employing analysis of closed-form solutions and numerical multi-parameter optimization.

This article presents a technique for analysis and automated design of frequency selective surfaces. In this work the method of moments is used to analyse a planar periodic structure. The approach allows to automate the whole process of the filter design and frees the users from the detailed knowledge of the filter design theory. For the practical...

This paper presents a preliminary study on the use of the Factor Analysis (FA) methods in an automatic speaker diarization process, dedicated to the meeting rooms. In-deed, the speaker diarization process, based on the top-down E-HMM approach, integrates a FA-based speaker modeling in an additional resegmentation step, which aims at helping the ref...

The project aims at a system for recognition Skype calls. This work also focuses on finding out high-quality Skype recorder. Signal processing (there are used techniques of phoneme recognition and logical segmentation), speech recognition, and results presentation follows. Essential part of this work is also index and search implementation. This pr...