Student EEICT 2022: Selected Papers

Title: Proceedings II of the 28th Conference STUDENT EEICT 2022
Subtitle: Selected Papers

Publisher: Brno University of Technology, Faculty of Electrical Engineering and Communication
Supervisor: Prof. Vladimír Aubrecht
Editor: Assoc. Prof. Vítezslav Novák
Place and year: Brno, 2022

ISBN: 978-80-214-6030-0
ISSN: 2788-1334
https://www.eeict.cz/

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Now showing 1 - 5 of 66

A Separation and Characteristics of Inner Egg Shell Membrane
(Vysoké učení technické v Brně, Fakulta elektrotechniky a komunikačních technologií, 2022) Charvot, Jakub
The aim of this work is to characterize inner egg shell membrane (IESM) and compare different methods of extracting it from an egg. Scanning electron microscopy (SEM) was used in a combination with energy dispersive X-Ray spectroscopy (EDX) to get an idea of membrane structure and chemical composition and impacts of the used extraction method. Significant differences were found between the measured samples, but it has not been verified whether they affect the resulting physical properties yet. The importance of this study lies mainly in the future investigation of several factors, such as piezoelectric properties, so it serves as a fundamental research.
Design of a micromanipulator for repairs of printed circuit boards
(Vysoké učení technické v Brně, Fakulta elektrotechniky a komunikačních technologií, 2022) Kopřiva, Pavel; Otáhal, Alexandr
This work deals with design of micromanipulator based on pantographic mechanism with electronic control. The main purpose of this micromanipulator is repairing printed circuit boards, but it has been designed to be universal for any use case. The main focus is on creating device that will have the highest possible accuracy, while still being able to provide necessary force to carry out mechanical repairs of printed circuit boards. The work contains the design of the pantographic mechanism, stepper motor based electrical drive section and control circuits with power supplies.
Correction of gradient pulse shape distortions in radial MRI
(Vysoké učení technické v Brně, Fakulta elektrotechniky a komunikačních technologií, 2022) Vitouš, Jiří
This paper focuses on the optimization of gradient-pulse shapes in MRI measurement. The main topic investigated in this paper is optimization of slice-selective gradient, where imperfections may produce phase distortion in the resulting image and also signal loss in the acquired signal. A method for correction is proposed based on the Nelder-Mead algorithm followed by greedy search in the neighborhood of the found solution. The adjustment is evaluated using a simple Fast low angle shot (FLASH) sequence with radial readout. The results show a significant improvement in the Free induction decay (FID) signal magnitude, echo stability, and an improvement in the homogeneity of image phase.
VHDL-based implementation of CRYSTALS-Kyber components on FPGA
(Vysoké učení technické v Brně, Fakulta elektrotechniky a komunikačních technologií, 2022) Jedlicka, Petr; Hajny, Jan
CRYSTALS-Kyber is one of the finalists of the National Institute of Standards and Technology (NIST) post-quantum cryptography competition. In this paper, we deal with effective hardware-accelerated implementations of components intended for the use in the FPGA (Field Programmable Gate Array) implementation of the above-mentioned lattice-based cryptography scheme. The discussed components are NTT (Number Theoretic Transform), inverse NTT (NTT−1), CBD (Centered Binomial Distribution) and the Parse Algorithm (shortly Parse). The improved implementation of NTT (NTT−1) requires 1189 (1568) Look-Up Tables (LUTs), 1469 (2161) Flip-Flops (FFs), 28 (50) Digital Signal Processing blocks (DSPs) and 1.5 (1.5) Block Memories (BRAMs). The latency of the design is 322 (334) clock cycles at the frequency 637 MHz which makes the presented NTT (NTT−1) implementations to be currently the fastest ones. The implementations of the sampling functions (CBD and Parse) requires less than 100 LUTs and FFs with maximum latency 5 clock cycles at the frequencies over 700 Mhz. All implementations has been synthesized for the Xilinx Virtex UltraScale+ architecture.
Readiness of Anonymous Credentials for Real Environment Deployment
(Vysoké učení technické v Brně, Fakulta elektrotechniky a komunikačních technologií, 2022) Casanova-Marqués, Raúl; Dzurenda, Petr
Attribute-based Credentials (ABCs) are a promising technology for protecting users' privacy and digital identity. We can use ABCs in a multitude of contexts. For instance, we can prove the validity of transportation tickets, demonstrate the legal age, prove the health status, or prove access rights in the company environment. All of this, we can do without disclosing complete personal identity. Nevertheless, ABCs generally require computational power that some wearable devices cannot cope with. In this paper, we present our implementation of a privacy-enhancing authentication system based on ABCs technology. The system is suitable for deployment in real-world scenarios and uses a wide range of differently powerful user devices (e.g., smart cards, smartphones, and wearables). Based on our implementation results, we also discuss the implementations aspects of ABCs, their readiness, and usability in real-world applications.

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