Periodica Polytechnica (Budapest University of Technology and Economics)
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Advanced Driver Assistance Systems in the Driver Training System in Hungary
Get PDFAutomated driving systems can improve road safety, but also carry significant risks. Research has shown that automated features may predispose drivers to riskier driving behaviour, making them more careless, as many drivers over-rely on these systems. Incorrect expectations or insufficient knowledge about automated systems can also easily lead to inappropriate use of the technology or increased driver distraction. In the future, there will be an increasing number of vehicles with varying degrees of automation. These developments raise the need to review and adapt current driver training and testing procedures to increase the ability of users to use automated driving systems properly and be aware of their potential and limitations to take full advantage of their benefits. Although research and regulatory plans focus heavily on Level 3 automation, the management of lower levels of automation adds a new kind of extra task to the usual driving task, and may even complicate it, given that it significantly changes driver behaviour. A survey of driver trainers was carried out in 2022 to identify what safety systems were fitted in their vehicles, how and when they were taught in driver training, and their capabilities and limitations. With EU regulations promoting or requiring the use of safety technologies, it is even more important that driver training and testing include technological developments and guarantee the safe use of all levels of vehicle automation
Design, Development and Enhancement of Suspension Systems Using Diverse Control Mechanisms for Performance Comparison
Get PDFThe study examines the extent of improvement achieved through various control approaches employed in active suspension systems. Real time adaptive suspension systems are stressed in terms of their enhanced possibilities of providing enhanced ride comfort, better vehicle responses and enhanced stability. This study uses the use of quarter car model, utilizing numerical and Simulink/MATLAB modeling to evaluate and analyze the results of P, PI, PD, PID, Fuzzy PID, and Fuzzy Logic controllers in controlling ride comfort, with a focus on displacement, velocity, and acceleration indices under various conditions. The study shows that the active suspension systems, and particularly those with the PID and Fuzzy PID controllers have a strong impact on wheel displacement, on dynamics of the car and passengers’ comfort. More specifically, active systems showed 10.71% higher values of the vertical body displacement and 20% less settling time as compared to the base systems. The study found that active suspension systems mainly PID and FPID were effective ways of improving the control strategies, reducing the oscillations, the movements of the vehicle and thus the impact on passengers and providing better ride comfort
Beengedjük vagy kizárjuk az MI-t a könyvtárpedagógiából?
No full textThis research examines whether we should allow or ban the use of generative AI in schools and thus in library education, or whether there is a reasonable middle ground that serves the fundamental, skill-buildin purpose of learning. Although the use of AI in schools offers quick and effective solutions, students do not acquire the information search and processing skills that are essential in the long term, while their critical thinking skills are also impaired and the focus of their cognitive activity changes as AI users. Based on the example presented and current research findings, the use of AI in education raises the risk of skill skipping and deskilling. It is therefore the responsibility of teachers to use thi technology in a way that supports the learning process rather than shortening it.A tanulmány azt vizsgálja, hogy engedélyezzük vagy tiltsuk a generatív MI használatát iskolai kontextusban, és így a könyvtár-pedagógiában is, vagy létezik egy észszerű középút, amely a tanulás alapvető, képességfejlesztőcélját szolgálja. Bár az MI használata iskolai közegben gyors és hatékony megoldásokat kínál, a diákok eközben nem sajátítják el a hosszú távon elengedhetetlen információkeresés és -feldolgozás kompetenciáit. Ráadásul a kritikai gondolkodás képessége is csorbát szenved, miközben MI-felhasználóként megváltozik a kognitív tevékenység fókusza. A bemutatott példa és az aktuális kutatási eredmények alapján az MI alkalmazása az oktatásban felveti a képességfejlesztés háttérbeszorulásának veszélyét (skill skipping, deskilling). Ezért a pedagógus felelőssége, hogy úgy kezelje e technológia használatát, hogy az elősegítse a tanulási folyamatot, ne pedig lerövidítse
Implementing Official RDA: The experience of the National Library of New Zealand
No full textThis article provides an overview of the steps taken by the National Library of New Zealand (NLNZ) to implement the Official Resource Description and Access (Official RDA) descriptive standard. Implementation occurred in August 2024 following a five- year programme of preparation, development and training. User testing was combined with implementation. Although this resulted in some months of confusion as earlier decisions were modified or reversed, we realised that it is only when working with real resources that we fully understood how the Official RDA Toolkit works in practice.This article provides an overview of the steps taken by the National Library of New Zealand (NLNZ) to implement the Official Resource Description and Access (Official RDA) descriptive standard. Implementation occurred in August 2024 following a five- year programme of preparation, development and training. User testing was combined with implementation. Although this resulted in some months of confusion as earlier decisions were modified or reversed, we realised that it is only when working with real resources that we fully understood how the Official RDA Toolkit works in practice
Welcome
No full textThe 3rd issue of the 12th volume of Opus et Educatio (issue 46, 2025) is our second English-language compilation this year. Significant development work was carried out in the summer months to modernize the journal. Our professional background has been significantly strengthened in recent months by the fact that our university, the first civil engineering training institute founded in 1782, the Institutum Geometrico-Hydrotechnikum, as the legal predecessor of our university, the National Technical Information Center and Library (OMIKK), provides the technical background of our journal and provides modern library support. From this year, the Budapest University of Technology and Economics has also started an epoch-making innovation program; the 244-year-old institution is transitioning to a new corporate-style operating mode, in connection with which the university's professional periodicals are published under the coordination of OMIKK. As part of these changes, our editorial board was renewed in September, which is why it is worth taking a look at the colophon of the journal's electronic interface. In accordance with international practice, one third of the members of the editorial board of Opus et Educatio are distinguished international personalities, forming the International Advisory Board.
Although the structure of Opus et Educatio has not changed, the process of internationalization is also reflected in the fact that the authors of this issue are researchers and educators who "arrived" from seven countries. Our first column is Online First, in which Saule Anafimova's reflections on the phenomenon of the Open Education movement in the 21st century, which interests many, can be found. Four significant articles are featured in our "Studies" column, followed by four additional publications in our "Start-up" column, which showcases the writings of young researchers. The manuscripts submitted by half of the authors of the issue arrived at our editorial office from several continents, from Canada to Europe to Asia, demonstrating not only the thematic diversity but also the innovative characteristics of the development of an international approach.
Our traditions remain unchanged, and in addition to studies, we would like to allow our readers to review and look ahead. Therefore, we report on a significant international conference, the European Society for Disability Research, which is a scholarly network that promotes research on disability in the social sciences and humanities (13th ALTER Conference at the University of Innsbruck from 8 - 10 July 2025), and the presentation of a forum on the educational problems of people with disabilities. Finally, as usual, we close our current issue with a review, the title of which is also mysterious: The Shape of Things Unseen, so this issue figuratively opens a window onto the world, providing an outlook for readers interested in the multidisciplinary themes of Opus et Educatio
Mechanical, Morphological, and Electrical Properties of Polylactic Acid-based Conductive Polymer Composites through Polyethylene Glycol and Carbon Nanotubes Integration
Get PDFPolylactic acid (PLA) is a biodegradable aliphatic polymer obtained from renewable sources, primarily used in the packaging sector. Electronic components require antistatic packaging to prevent electrostatic discharge (ESD). PLA, being non-conductive, necessitates the addition of conductive carbon nanotube (CNT) to reduce its resistivity and make it suitable for antistatic packaging applications. This research investigates the effect of polyethylene glycol (PEG) on the properties of conductive polymer composites (CPCs) based on PLA, using solvent casting to form film sheets. Four different concentrations of PEG-1,000 and PEG-10,000 (0, 6, 10, and 14 wt%) were utilized to improve the ductility of PLA. CNT was incorporated at a concentration of 8 wt% to enhance the mechanical and electrical properties of PLA. The addition of PEG to the PLA/CNT composites resulted in a reduction in tensile strength while increasing elongation at break, thereby indicating improved flexibility. FTIR analysis revealed significant changes in the carbonyl group peak at 1747 cm−1, with a decrease in carbonyl content observed as the concentration and molecular weight of PEG increased. The electrical conductivity of the CPCs showed a notable increase with the incorporation of 14 wt% PEG, rising from 1.89 × 10−11 S cm−1 to 5.62 × 10−8 S cm−1 (PEG-1,000) and 1.25 × 10−7 S cm−1 (PEG-10,000). These results demonstrate that PEG enhances the mechanical flexibility and electrical conductivity of PLA/CNT composites, making them promising candidates for antistatic packaging applications
Conversion of Edamame Pods (Glycine max) and Cassava Peel into Biobriquettes Using a Mixture Fly Ash and Bottom Ash: Thermal Characteristics and Optimization
Get PDFThe increase in population has led to a rise in energy demand, resulting in the depletion of energy reserves, particularly non-renewable sources. One solution to this issue is the development of alternative energy sources, such as biomass-derived biobriquettes. This study investigates the impact of material composition and mesh size on the thermal characteristics of biobriquettes. The raw materials used include edamame pods, bottom ash, and cassava peel as an adhesive. The pyrolysis of edamame pods was conducted at 250 °C for 30 min. An experimental method was employed to test the thermal characteristics, including calorific value, moisture content, ash content, volatile matter content, and combustion rate. The results of the biobriquette test were compared to the standards set by SNI 01-6235-2000, which pertains to wood charcoal briquettes. The test results indicate that the optimal briquettes consist of 90% edamame pods charcoal and 10% bottom ash, with a mesh size of 40. These briquettes exhibit a calorific value of 20,717.1 J/g, a moisture content of 2.72%, an ash content of 18.67%, a volatile matter of 61.49%, and a burning rate of 0.146 g/min
Intelligent Control on Industrial Vinyl Chloride Monomer Column: A System Identification and Artificial Intelligence Based Control Approach
Get PDFIn the production of vinyl chloride monomer (VCM), the separation of VCM vapors from ethylene dichloride (EDC) in the distillation column is complicated due to uncertain dynamic behavior and nonlinearity of the process and results in poor controlling of the column which may overlook product quality. In this regard, the column is simulated with integrated tuned-controllers using Aspen Plus dynamics. For system identification of the VCM column, the nonlinear autoregressive model with exogenous inputs (NLARX) gives a higher Fit% for the real-time data in comparison with the first order plus time delay (FOPTD) model. The study shows the application of artificial neural network (ANN) and adaptive neuro-fuzzy inference system (ANFIS) based control strategies, alongside a traditional proportional-integral-derivative (PID) controller for the control of the top composition and bottom composition of the VCM column. The results indicate that for top composition, the ANFIS-based controller having an integral time absolute error (ITAE) value of 0.132 outperforms ANN-based controller with an ITAE value of 0.78 in terms of set point tracking, and a similar behavior is found for bottom composition. In terms of disturbance rejection, the ANFIS having an ITAE value of 0.036 outperforms ANN having an ITAE value of 1.03 for top composition and shows the same behavior for bottom composition while the PID control exhibits significantly lower performance in both set point tracking and disturbance rejection