Structural Design Using Cellular Automata

Cílem tohoto textu je čtenáři co nejvíce přiblížit problematiku celulárních automatů, jejich návrhu a použití pro strukturní design. Na návrh automatů se nejčastěji používá genetických algoritmů, které jsou zde pro lepší pochopení také prezentovány. Jako struktury jsou použity řadicí sítě, které však nejsou součástí automatů, ale jsou generovány samostatně, pomocí pravidel lokální přechodové funkce automatu.The aim of this paper is to introduce the readers to the field of cellular automata, their design and their usage for structural design. Genetic algorithms are usually involved in designing complicated cellular automata, and because of that they are also briefly described here. For the purposes of this work sorting networks are considered as suitable structures to be designed using cellular automata, however, they are not a part of the automata but they are generated separately by modified rules of a local transition function.

DAPSET - Concept for characterising socio-economic drivers of and pressures on biodiversity

This article develops eleven criteria focusing on the relative importance and strength of different, especially socio-economic drivers of and pressures on biodiversity. These refer to the syndrome concept designed to assess global environmental risks and the DPSIR framework developed to guide integrative assessment of links between human activities and degradation of the natural environment. The aim is (a) coordinating inter-disciplinary research on distinguishing characteristics of drivers and pressures, (b) structuring interdisciplinary discussions on scale and cross-scale dynamics in assessment of biodiversity change as well as (c) setting priorities in policy making and implementation of response actions. --Biodiversity change,assessment criteria,setting priorities in driver-pressure management

Sentiment Analysis in Automotive Industry

Cieľom tejto práce je oboznámiť sa so základnými metódami analýzy postojov na sociálnych sieťach.  Téma práce je zameraná na automobilový priemysel, avšak princíp práce je možné použiť na akékoľvek iné skúmané odvetie. Podstatou praktickej časti je získanie dát zo sociálnych sietí, ich analýza a následná indexácia do ElasticSearch databáze. Ďaľším cieľom práce je tieto dáta vizualizovať prostredníctvom portálu. Vytvorený webový portál poskytuje rôzne štatistiky popredných automobilových značiek, prehľad nových trendov alebo vizualizáciu názorov na konkrétne aspekty jednotlivých automobilov.The main theme of this thesis is to familiarize with the basic methods of sentiment analysis on social networks. Thesis’s theme is aimed on the automotive industry, although this prinicipal can be used in any different examined branch. The basis of the practical part is to obtain data from the social networks, analyze them and then index them into ElasticSearch database. Another goal of the thesis is to visualize these data by means of a web portal. Created web portal provides various statistics of the leading automobile brands, an overview of new trends or the aspect visualization of the individual cars.

Usage of IEC 61131 and IEC 61499 standards for creating distributed control systems

This publication deals with the application of standards for industrial automation during distributed control systems design. Control systems design consists of a choice between two approaches based on the standards, IEC 61131 and IEC 61499. The question is which of the standards to use for distributed control systems design. The most commonly used standards are briefly listed in the introduction section. Then follows a more detailed description of the IEC 61131 and IEC 61499 standards, future development of the IEC 61499 standard and its usage during the creation of distributed control systems. Further on are lists and descriptions of existing commercial and research software tools, which are necessary in implementing this standard. The main section deals with the methodology for standard application comparison and criteria selection for comparing. This methodology is then verified on real control systems. The final section includes methodology generalization for suitable approach selection, resulting in recommendations for which standard to choose during creation of distributed control systems

Morphological Analyser Implemented as FSAs

Cílem tohoto textu je čtenáři co nejvíc přiblížit problematiku morfologie a morfologické analýzy slovenského jazyka s využitím morfologického analyzátoru a nastínit odlišnost od různých světových jazyků. Text také objasňuje význam hledání základního tvaru slov při analýze slovenských textů. V další části se věnuje optimálnímu uložení rozsáhlých slovníků pomocí konečných automatů s využitím jejich minimalizace. Nakonec jsou srovnáváný různé formy implementace.The aim of this paper is to introduce to its reader the field of morphemics and morphemic analysis of slovak language using morphemic analyser and to signify the difference from other world languages. In this text it is also explained the importance of finding base form of words while analysing slovak texts. Other part analyses the optimal storage of large dictionaries using finite state automata minimization. The end contains the comparison between various forms of implementation.

Using motion planning and genetic algorithms in movement optimization of industrial robots

The issues of path and trajectory planning algorithms and optimization of industrial manipulator trajectory generation are still not completely solved due to their variability and increasing complexity with the growing number of robot degrees of freedom. Generation of an optimal trajectory can be solved in several ways, such as traditional numeric and more recent approaches, which include evolutionary algorithms and genetic algorithms within them. The first chapter is devoted to a brief overview of path planning methods, especially in mobile robots. The second chapter deals with a more detailed overview of robot path planning methods in continuous and discrete environments. The third chapter describes the most popular motion planning algorithms. The fourth chapter is dedicated to genetic algorithms which we used as an optimization method. The fifth chapter focuses on optimal robot motion control and optimization methods using genetic algorithms as the method for an industrial manipulator control. The next chapter contains a solution and its implementation in support software, as well as the experimental verification of the results. The last chapter evaluates the results and their benefits

Recurrent mini-outbursts and a magnetic white dwarf in the symbiotic system FN Sgr

AIMS: We investigated the optical variability of the symbiotic binary FN Sgr, with photometric monitoring during $\simeq$55 years and with a high-cadence Kepler light curve lasting 81 days. METHODS: The data obtained in the V and I bands were reduced with standard photometric methods. The Kepler data were divided into subsamples and analyses with the Lomb-Scargle algorithm. RESULTS: The V and I band light curves showed a phenomenon never before observed with such recurrence in any symbiotic system, namely short outbursts, starting between orbital phase 0.3 and 0.5 and lasting about a month, with a fast rise and a slower decline, and amplitude of 0.5-1 mag. In the Kepler light curve we discovered three frequencies with sidebands. We attribute a stable frequency of 127.5 d$^{-1}$ (corresponding to an 11.3 minutes period) to the white dwarf rotation. We suggest that this detection probably implies that the white dwarf accretes through a magnetic stream, like in intermediate polars. The small outbursts may be ascribed to the stream-disc interaction. Another possibility is that they are due to localized thermonuclear burning, perhaps confined by the magnetic field, like recently inferred in intermediate polars, albeit on different timescales. We measured also a second frequency around 116.9 d$^{-1}$ (corresponding to about 137 minutes), which is much less stable and has a drift. It may be due to rocky detritus around the white dwarf, but it is more likely to be caused by an inhomogeneity in the accretion disk. Finally, there is a third frequency close to the first one that appears to correspond to the beating between the rotation and the second frequency.Comment: Accepted for publication in Astronomy and Astrophysic

Methods of pre-identification of TITO systems

The content of this article is the presentation of methods used to identify systems before actual control, namely decentralized control of systems with Two Inputs, Two Outputs (TITO) and with two interactions. First, theoretical assumptions and reasons for using these methods are given. Subsequently, two methods for systems identification are described. At the end of this article, these specific methods are presented as the pre-identification of the chosen example. The Introduction part of the paper deals with the description of decentralized control, adaptive control, decentralized control in robotics and problem formulation (fixing the identification time at the existing decentralized self-tuning controller at the beginning of control and at the beginning of any set-point change) with the goal of a new method of identification. The Materials and methods section describes the used decentralized control method, recursive identification using approximation polynomials and least-squares with directional forgetting, recursive instrumental variable, self-tuning controller and suboptimal quadratic tracking controller, so all methods described in the section are those ones that already exist. Another section, named Assumptions, newly formulates the necessary background information, such as decentralized controllability and the system model, for the new identification method formulated in Pre-identification section. This section is followed by a section showing the results obtained by simulations and in real-time on a Coupled Drives model in the laboratory. © 2021 by the authors. Licensee MDPI, Basel, Switzerland.European Regional Development Fund under the project CEBIA-Tech [CZ.1.05/2.1.00/03.0089]; Ministry of Education, Science, research and Sport of the Slovak Republic [1247/2018]Ministerstvo školstva, vedy, výskumu a športu Slovenskej republiky; European Regional Development Fund, ERDF: CZ.1.05/2.1.00/03.008

Testing of adhesive spray painting with robot

Cilj je ovoga rada određivanje odgovarajućih parametara za raspršivanje adheziva korištenih u industriji uz primjenu robota. Korišten je robot ABB IRB 1600 u neeksplozivnom okruženju. Adheziv se oslobađao iz tlačne posude i nanosio raspršivačem Krautzberger RA5. U radu se daje detaljan opis dijagrama za automatsko spajanje pištolja za bojenje. Rezultati pojedinačnih testova dani su u tablicama, a ovisnosti pojedinih parametara prikazane su u grafikonima. Ovisno o količini nanesenog mlaza, najbolji uzorci su ocijenjeni u skladu s preporukama proizvođača adheziva.This article aims at setting appropriate parameters for robotic spraying of adhesives used in industry. The robot ABB IRB 1600 was used in a non-explosive environment. The adhesive was dispensed from pressure sweat and applied by a Krautzberger RA5 spray head. The article describes a detailed diagram for automatic connection of a painting gun. The results of the individual tests are shown in the tables and the dependencies of the individual parameters are described in the graphs. Depending on the amount of spray applied, the best samples are evaluated according to the adhesive manufacturer\u27s recommendations