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International Spring Seminar on electronics Technology

作者： Barbara Molnár Attila Géczy Dept. of Electronics Technology Faculty of Electrical Engineering and Informatics Budapest University of Technology and Informatics Budapest Hungary

ISBN: (数字)9798350385472

ISBN: (纸本)9798350385489

In this paper, we present an electronic nose application case study based on an affordable Bosch BME688 AI (artificial intelligence) capable sensor module set (and development kit) to distinguish and identify different soft drinks and beverages. During the work, the device was prepared for TinyML and AI-based identification. The module contains eight pieces of BME688 sensors, and it is compatible with the Bosch BME AI Studio software. Based on their unique odor profiles, we created and tested various ML (machine learning) algorithms to distinguish between fruit palinka (fruit spirit) types, different beers, and ethanol. The case study aims to determine whether the module can distinguish between beverages. For this, we applied passive delivery. It was found that the differentiation between air and different samples (cola, lager beer) is possible. Still, ethanol and spirits with high alcohol content saturate the device, pointing to future dynamic sampling (active delivery).

关键词： Seminars Sequential analysis Ethanol Tiny machine learning Position measurement Electronic noses Software

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FC Portugal: RoboCup 2024 3D Simulation League Champions

FC Portugal: RoboCup 2024 3D Simulation League Champions

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27th RoboCup International Symposium, 2024

作者： Abreu, Miguel Mota, Pedro Azevedo, Tomás Silva, Francisco Reis, Luís Paulo Lau, Nuno Florido, Mário LIACC/LASI/FEUP Artificial Intelligence and Computer Science Lab Faculty of Engineering of the University of Port University of Porto Porto Portugal LIACC/LASI/FCUP Artificial Intelligence and Computer Science Lab Faculty of Sciences of the University of Porto University of Porto Porto Portugal IEETA/LASI/DETI Institute of Electronics and Informatics Engineering of Aveiro Department of Electronics Telecommunications and Informatics University of Aveiro Aveiro Portugal

ISBN: (纸本)9783031858581

FC Portugal, a simulated humanoid soccer team from the universities of Porto and Aveiro, achieved the third consecutive victory in the main competition of the 2024 RoboCup 3D Simulation League. The team registered 16 wins, 3 ties, and 2 losses, scoring a total of 105 goals while only conceding 17. FC Portugal also ended first in two secondary events: the Scientific Challenge, which evaluates innovative scientific contributions within the league, and the Fat Proxy Challenge, where teams share a common set of low-level skills and compete for the best high-level strategy. The codebase used in this competition was developed in Python after RoboCup 2021. This paper presents a brief overview of its structure along with the new features developed for this year’s competition. The key developments include a hierarchical learning framework, presented at the Scientific Challenge, and the release of our codebase to the RoboCup community. © The Author(s), under exclusive license to Springer Nature Switzerland AG 2025.

关键词： 3D modeling

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Low-Cost 3D Printed Dielectric Lens Antennas for 5.9 GHz Frequency Band V2X Applications 24

Low-Cost 3D Printed Dielectric Lens Antennas for 5.9 GHz Fre...

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24th International Microwave and Radar Conference, MIKON 2022

作者： Kalista, Weronika Leszkowska, Luiza Rzymowski, Mateusz Nyka, Krzysztof Kulas, Lukasz Gdansk University of Technology Faculty of Electronics Telecommunications and Informatics Department of Microwave and Antenna Engineering Gdansk Poland

ISBN: (纸本)9788395602030

In this paper a selection of designs of directional lens antennas for V2X communication is presented and investigated. We have compared five different types of all-dielectric 3D-printed lenses - extended hemispherical, ellipsoidal, zoned cylindrical, planar graded index, and modified Luneburg lens, all of them using the same patch radiator. The assumed fabrication method for all lenses is 3D printing using low-cost PLA filament. The antennas with the most promising simulated performance and lens constructions were fabricated and measured. © 2022 Warsaw University of Technology.

关键词： 3D printers

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Training T5 Models for Grammatical Error Detection in Slovak: Impact of Dataset Size

Training T5 Models for Grammatical Error Detection in Slovak...

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International Symposium on Applied Machine Intelligence and informatics (SAMI)

作者： Maroš Harahus Matúš Pleva Renáta Rusnáková Department of Electronics and Multimedia Communications Faculty of Electrical Engineering and Informatics Technical University of Košice Slovakia Department of Computers and Informatics Faculty of Electrical Engineering and Informatics Technical University of Košice Slovakia

ISBN: (数字)9798350379365

ISBN: (纸本)9798350379372

Grammatical error detection in low-resource languages like Slovak is challenging due to the scarcity of annotated data and language-specific models. This paper investigates the performance of state-of-the-art multilingual models, including ByT5, mT5, uMT5, and Flan-T5, on the task of grammatical error detection in Slovak sentences. The study explores model efficiency across various dataset sizes and error types, focusing on single-word, multi-word, and random-word corruption scenarios. Our experiments reveal that ByT5 outperforms other models in terms of precision and recall, especially when handling large datasets. The results provide insights into how different multilingual architectures can be applied to improve grammatical error detection in low-resource language contexts.

关键词： Training Focusing Data models Multilingual informatics Optimization Machine intelligence

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Matlab software designed for 3D localization by a multistatic UWB radar 20

Matlab software designed for 3D localization by a multistati...

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20th IEEE Jubilee World Symposium on Applied Machine Intelligence and informatics, SAMI 2022

作者： Kelij, Kristian Fortes, Jana Technical University of Košice Faculty of Electrical Engineering and Informatics Department of Electronics and Multimedia Communications Slovakia

ISBN: (纸本)9781665497046

One of the possible approaches to the three-dimensional (3D) localization based on a multistatic ultra-wideband (UWB) radar system, which works with more than three channels, is the application of the so-called direct localization method in 3D. Redundancy of the number of receiving channels can be theoretically used to refine the estimated positions of targets. Such a 3D localization approach is then intended to increase the accuracy of person positioning, as well as the robustness of the localization system as a whole. The software implementation of this idea in the Matlab programming environment is the scope of this paper. The first experimental results suggest that the proposed localization software implementation is fully functional and slightly more accurate in comparison to another 3D localization method. © 2022 IEEE.

关键词： Location awareness Three-dimensional displays Redundancy Software Robustness Real-time systems Ultra wideband radar

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QUBO Formulation of the Shortest Path Algorithm and its Evaluation on a Quantum Annealer

QUBO Formulation of the Shortest Path Algorithm and its Eval...

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International Symposium on Applied Machine Intelligence and informatics (SAMI)

作者： Renáta Rusnáková Martin Chovanec Maroš Harahus Juraj Gazda Department of Computers and Informatics Faculty of Electrical Engineering and Informatics Technical University of Košice Slovakia Department of Electronics and Multimedia Communications Faculty of Electrical Engineering and Informatics Technical University of Košice Slovakia

ISBN: (数字)9798350379365

ISBN: (纸本)9798350379372

This study focuses on reformulating the shortest path problem in undirected weighted graphs into a QUBO problem, leveraging the D-Wave quantum annealing hybrid solver for execution. While A * search with heuristics, a widely used algorithm for solving shortest path problem, serves as a baseline for comparison, our primary contribution lies in analyzing the accuracy and benefits of the proposed QUBO formulation. Our analysis reveals that the proposed QUBO formulation together with selected quantum annealing hybrid solver is loosing its efficiency with increasing number of nodes. This is caused by the size of the problem and related penalty calculation but also by the architecture of the D-Wave QPU and design of the hybrid solver. We are proposing techniques to improve the results, such as graph pruning during preprocessing or penalty parameter tuning to achieve better, more accurate, results. This study provides valuable insights into the limitations of current approaches and explores the future applications of quantum computing in solving real-world challenges.

关键词： Shortest path problem Annealing Accuracy Quantum annealing Search problems Polynomials Complexity theory Tuning Optimization Machine intelligence

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Board Level Underfill - the Influence of Flux 46

Board Level Underfill - the Influence of Flux

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46th International Spring Seminar on electronics Technology, ISSE 2023

作者： Plachý, Zbyněk Hurtony, Tamás Géczy, Attila Dušek, Karel Czech Technical University in Prague Faculty of Electrical Engineering Department of Electrotechnology Prague Czech Republic Budapest University of Technology and Economics Faculty of Electrical Engineering and Informatics Department of Electronics Technology Budapest Hungary

ISBN: (纸本)9798350334845

This work is devoted to investigating the effect of flux residues on the underfill. Prepared samples were made of copper sheets to eliminate the influence of multi-layered, inhomogeneous materials. Two sets of these samples were designed for this work;where one set was cleaned in an isopropyl alcohol bath in an ultrasonic cleaner, and the other was left uncleaned to highlight the presence of flux. Underfill was applied to both sets of samples, and the assemblies created in this way were subjected to several diagnostic methods. The work results showed that even when no-clean flux was used, its residues remained on the base substrates, contaminating the underfill or preventing it from completely filling the gap. The ultrasonic cleaner proved to be a suitable method for cleaning the samples, thus, eliminating the influence of flux residues or other impurities on the underfill. Furthermore, mechanical tests indicated that non-cleaned samples are characterized by a greater dispersion in mechanical properties than cleaned ones. Therefore, eliminating the influence of the flux will allow us to achieve more accurate results in the underfill's effect on the reliability of the assembly, which will allow a better potential comparison of different methods of underfill application and other materials. © 2023 IEEE.

关键词： Ball grid arrays

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Constant-Factor Approximation Algorithm for Binary Search in Trees with Monotonic Query Times 47

Constant-Factor Approximation Algorithm for Binary Search in...

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47th International Symposium on Mathematical Foundations of Computer Science, MFCS 2022

作者： Dereniowski, Dariusz Wrosz, Izajasz Faculty of Electronics Telecommunications and Informatics Gdańsk University of Technology Poland Intel Gdańsk Poland

ISBN: (纸本)9783959772563

We consider a generalization of binary search in linear orders to the domain of weighted trees. The goal is to design an adaptive search strategy whose aim is to locate an unknown target vertex of a given tree. Each query to a vertex v incurs a non-negative cost ω(v) (that can be interpreted as the duration of the query) and returns a feedback that either v is the target or the edge incident to v is given that is on the path towards the target. The goal of the algorithm is to find a strategy that minimizes the worst-case total cost. We propose a constant-factor approximation algorithm for trees with a monotonic cost function. Such function is defined as follows: there exists a vertex r such that for any two vertices u, v on any path connecting r with a leaf it holds that if u is closer to r than v, then ω(u) ≥ ω(v). The best known approximation algorithm for general weight functions has the ratio of O(√log n) [Dereniowski et al. ICALP 2017] and it remains as a challenging open question whether constant-factor approximation is achievable in such case. This gives our first motivation towards considering monotonic cost functions and the second one lies in the potential applications. © 2022 Schloss Dagstuhl- Leibniz-Zentrum fur Informatik GmbH, Dagstuhl Publishing. All rights reserved.

关键词： Cost functions

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Effect of Incorporation of Ceramic Nanoparticles in Bismuth-Tin Solder Paste on Electrochemical Migration 46

Effect of Incorporation of Ceramic Nanoparticles in Bismuth-...

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46th International Spring Seminar on electronics Technology, ISSE 2023

作者： Veselý, Petr Froš, Denis Klimtová, Markéta Gharaibeh, Ali Medgyes, Bálint Czech Technical University in Prague Faculty of Electrical Engineering Department of Electrotechnology Prague Czech Republic Budapest University of Technology and Economics Faculty of Electrical Engineering and Informatics Department of Electronics Technology Budapest Hungary

ISBN: (纸本)9798350334845

This work aimed to investigate the susceptibility of novel nanocomposite solder paste to electrochemical migration (ECM). Bismuth-tin solder paste was filled with 0.1 wt.% of TiO2 nanoparticles. The electrochemical migration behavior was evaluated using a water drop (WD) test. High-purity water and 10 VDC bias voltage were applied. The experiments were performed on two types of samples differing in the surface finish of conductive pattern- bare copper without surface protection and copper with applied galvanic gold finish. The results revealed a trend when the mean time to failure decreased for samples with deposited nanocomposite solder paste, regardless of the surface finish. Thus, the electronics' reliability may be lowered when using Bi-Sn paste doped with TiO2 nanoparticles, at least in terms of ECM. This deterioration of the solder paste should be considered a significant drawback for further development. However, the nanoparticles could improve other properties related to modified microstructure, such as mechanical or thermal. These aspects will be the subject of further research. © 2023 IEEE.

关键词： TiO2 nanoparticles

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Cross-Layer Distributed Attack Detection Model for the IoT

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International Journal of Ambient Computing and Intelligence 2022年第1期13卷 1-17页

作者： Ahmed, Hassan I. Nasr, Abdurrahman A. Abdel-Mageid, Salah M. Aslan, Heba K. Informatics Department Electronics Research Institute Cairo Egypt Computer Engineering Faculty of Engineering Al-Azhar University Cairo Egypt Computer Engineering Department College of Computer Science and Engineering Taibah University Saudi Arabia Center of Informatics Science Faculty of Information Technology and Computer Science Nile University Egypt

The security of IoT that is based on layered approaches has shortcomings such as the redundancy, inflexibility, and inefficiently of security solutions. There are many harmful attacks in IoT networks such as DoS and DDoS attacks, which can compromise the IoT architecture in all layers. Consequently, cross layer approach is proposed as an effective and practical security defending mechanism. Cross-layer distributed attack detection model (CLDAD) is proposed to enhance security solutions for IoT environments. CLDAD presents a general detection method of DDoS in sensing layer, network layer, and application layer. CLDAD is based on big data analytics techniques, which enable the detection process to be performed in a distributed way, so the model can detect DDoS attacks in any layer on-the-fly and the model support the scalability of the IoT environment. CLDAD is tested based on three datasets, namely artificial jamming attack dataset, BoT-IoT dataset, and BoT-IoT-based HTTP. The results showed that the proposed model is efficient in detecting attacks in the three layers of the IoT. Copyright © 2022, IGI Global.

关键词： Big data

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