Data Profiling Using IPFIX Mediator

Tato práce se zabývá profilováním síťových dat pomocí IPFIX mediátoru. Hlavní úlohou je efektivní filtrování dat a konfigurovatelná správa profilů. Pro IPFIX mediátor dosud neexistuje řešení, které by tuto funkcionalitu zajišťovalo. Uživatelé tak ztrácí přehlednost při analýze nasbíraných dat a odhalování anomálií. Z toho důvodu je v bakalářské práci navrženo a implementováno řešení ve formě zásuvného modulu pro IPFIX mediátor, který využívá hierarchii profilů s definovanými filtračními pravidly pro třídění dat.This thesis deals with the network data profiling using IPFIX mediator. The main task is effective data filtering and configurable profiles management. The profiles management is still not available for IPFIX mediator, which makes analysis of network traffic for users more difficult. Therefore this thesis deals with the design and implementation of configurable profiles management as a plug-in for IPFIX mediator. The plug-in uses profiles hierarchy with filtering rules for data sorting.

Anti-windup Schemes for Linear Dynamical Systems Control

Cílem této bakalářské práce je studovat windup jev a metody jeho potlačení. Představenými metodami jsou clamping, back-calculation, řízení s vnitřním modelem soustavy a návrh pomocí LMI. Pro poslední dvě zmíněné metody byla vytvořena aplikace pro Matlab. Tyto metody byly následně otestovány na vybraných soustavách pomocí simulace Matlab Simulink. Následně byly zhodnoceny s ohledem na výpočetní náročnost, překmit, dobu ustálení a hodnotu ITAE kritéria.The aim of this bachelor thesis is to study windup effect and methods of its compensation. Introduced methods are clamping, back-calculation, internal model control (IMC) and design based on solution of linear matrix inequalities (LMI). The Matlab tool was created for the last two methods. All mentioned methods were then tested on chosen systems by simulaton in Matlab Simulink. After that results of simulation were evaluated with respect to computational time, overshoot, settling time and ITAE criterion.

Speed Control of PMSM with Finite Control Set Model Predictive Control Using General-purpose Computing on GPU

In this article, novel approach in implementing finite control set predictive control is introduced. Algorithm is implemented using general-purpose computing on graphics processing unit. Predictions are computed using parallel threads on the GPU. Optimal switching state is then selected in dependence on the cost function given by angular speed error and constraints on the current. The algorithm is tested in the PIL simulation using Simulink and Jetson Nano. The ability of the algorithm to ensure the reference tracking and keeping the current within its limits are discussed

Raman spectroscopic study of counterfeit electronic components

The paper deals with the potential of Raman spectroscopy as an analytical method for the authenticity assessment of electronic components. Electronic components are an integral part of the devices that people use in their daily activities. Incidence of counterfeit electronic components is an increasingly common phenomenon in our modern world that may compromise reliability, functionality and other related purposes of the devices. As the Raman spectroscopy provides detailed information on the material used, the focus of the Raman spectroscopic study of selected original components was given especially on materials of polymer-based and ceramic-based packages and markings. Knowledge of this information can help to distinguish between genuine and counterfeit component. The non-original component was revealed using other methods used in our workplace. Raman spectroscopy also confirmed the differences in materials of counterfeits compared to the original. © 2018, World Scientific and Engineering Academy and Society. All rights reserved

Differential Evolution Based Nonlinear Model Predictive Speed Control of PMSM Implemented on GPU

In this paper, the novel approach to the nonlinear model predictive speed control of a permanent magnet synchronous motor and its implementation is introduced. The implementation is performed using general-purpose computing on graphics processing unit. The introduced algorithm uses the optimization method based on the differential evolution to get the optimal increment of stator voltage. The proposed algorithm is tested in the processor in the loop simulation with the Simscape model for the simulation of PMSM and the Jetson Xavier embedded device for the algorithm execution. The results show the ability of the algorithm to ensure the reference tracking and to keep the requested variables within their limits

Kultura romska na Słowacji – refleksje pedagogiczne i społeczne

The paper is a contribution to the discussion on the possibilities and obstacles to supporting education of the Romany and their social situation through culture. Despite the fact that the Romological literature contains many scientific works or quality final research reports, there exists a blank page in the field of culture of Eastern Slovakia segregated settlements inhabitants. We humbly perceive that our explanation can raise several methodological questions. The presence itself of a non-Roma researcher in Romany society requires a description of the stay process in the field through his optics. In our case of pedagogue and social worker with a focus on Romany society, the combination of science and literary genre seemed a suitable method for drawing an image of poverty in 21st-century settlements.3540542722Studia Edukacyjn