Search in Publications

Found 6374 publications

The Dissonance Within: Identity Regulation and Its Impact on Social Media Discontinuance Intentions

Irum Shahzadi Ankit Mehrotra Nourah O. Alshaghdali Dhruv Galgotia Sushant Kumar Vishnoi Irum Shahzadi

Publication Name: Journal of Global Information Management

Publication Date: 2025-01-01

Volume: 33

Issue: 1

Page Range: Unknown

Description:

This study employs Identity Regulation Theory (IRT) to investigate how identity-related psychological tensions, such as identity incongruence and dissonance, influence the discontinuation intentions of social media users. Using a cross-sectional survey of 294 active users via Prolific Academic, structural equation modeling (PLS-SEM) was employed to analyze the relationships among these tensions, platform fatigue, and discontinuation. Results show neither tension directly affects discontinuation, but both influence it through platform fatigue. This offers a new perspective on the psychological costs of social media, with fatigue serving as a key mediator in transforming identity tension into discontinuation intent. The paper adds to IRT research and helps firms understand why users leave social media.

Open Access: Yes

DOI: 10.4018/JGIM.392502

Artificial Intelligence in the Learning Process of the Subject 'Didactics' with Special Regard to Preparation for Oral Examinations

Laszlo Kadocsa Gyula Gubán Levente Juhász Gyorgy Molnar

Publication Name: Cinti 2025 IEEE 25th International Symposium on Computational Intelligence and Informatics Proceedings

Publication Date: 2025-01-01

Volume: Unknown

Issue: Unknown

Page Range: 319-326

Description:

The issue of higher education examinations, particularly oral examinations, has been addressed in numerous studies as early as the 1970s. Both Hungarian and international experts in educational science drew attention to a number of questions concerning higher education, including the problems related to assessment. This topic has remained a key area of inquiry in higher education, and in recent times it has become an acute issue again, particularly with the rise of objective assessment methods and the opportunities offered by computerbased testing. The aim of our study is to present: the application of AI in the learning process of the subject of Didactics, in students' preparation for examinations; the areas of student use and their opinions regarding the learning of Didactics; and the experiences drawn from the analysis of exam results and exam outlines. Our research methods include literature review, the use of artificial intelligence support, student questionnaires, and the analysis of exam outlines.

Open Access: Yes

DOI: 10.1109/CINTI67731.2025.11311837

Consumer Cost Perception and Its Role in Hydrogen Vehicle Adoption †

Nikolett Gyurián Nagy Nikolett Gyurián Nagy

Publication Name: Engineering Proceedings

Publication Date: 2025-01-01

Volume: 113

Issue: 1

Page Range: Unknown

Description:

The widespread adoption of hydrogen-powered vehicles as a sustainable mobility solution depends on several factors, among which consumer acceptance is particularly important. This study examined how cost perception, demographic characteristics, and environmental attitudes influence the intention to adopt hydrogen-powered vehicles. The quantitative study (n = 1330) was conducted using an online questionnaire in Hungary. The results were verified by linear regression conducted in three steps, depending on the set of dependent variables chosen. The results showed that while cost perception alone has a moderate effect on acceptance, environmental attitudes have a strong and significant explanatory power. Acceptance is not merely an economic decision, but a value-based one closely linked to individuals’ environmental worldviews. The results highlight that the acceptance of hydrogen-based mobility is primarily a value-based decision, and that strengthening environmental commitment is key to promoting it.

Open Access: Yes

DOI: 10.3390/engproc2025113065

Lightweight Solution to Generate Accurate Lanelet Maps †

David Jozsa Gergo Igneczi Matyas Mesics

Publication Name: Engineering Proceedings

Publication Date: 2025-01-01

Volume: 113

Issue: 1

Page Range: Unknown

Description:

As automated driving technologies become more mature, there is an increasing reliance on digital maps to support safe and efficient driving. Sensors like cameras and radars can be limited by occlusions, lighting conditions, or weather, and often fall short. High-definition (HD) maps offer excellent accuracy, but they are expensive to produce. These limitations make these techniques impractical for large-scale deployment. What makes our approach particularly attractive is its hardware simplicity: the entire process requires only a precise GNSS receiver and a commonly available lane detection camera, eliminating the need for expensive sensors like LiDAR or complex multi-vehicle fleets. We rigorously evaluated our method in a highway environment, where a vehicle equipped with our generated maps successfully executed autonomous lane following and adapted its speed based on detected speed limit signs. The positional deviation of the resulting maps was consistently under 5 cm.

Open Access: Yes

DOI: 10.3390/engproc2025113068

First report of Veltheimia mosaic virus in Veltheimia bracteata ‘Lemon Flame’ in Hungary

László Palkovics János Ágoston Asztéria Almási Katalin Salánki

Publication Name: Plant Disease

Publication Date: 2025-01-01

Volume: Unknown

Issue: Unknown

Page Range: 1-6

Description:

No description provided

Open Access: Yes

DOI: 10.1094/PDIS-09-25-1972-PDN

Szekszárd-Palánk and the postglacial recolonization of the Pannonian Basin

György Lengyel Tibor Marton Annamária Bárány Julia Blumenröther Kristóf István Szegedi Gergely Páll-Barna Endre Dobos

Publication Name: Dissertationes Archaeologicae Ex Instituto Archaeologico Universitatis De Rolando Eotvos Nominatae

Publication Date: 2025-01-01

Volume: 3

Issue: 13

Page Range: 321-351

Description:

Szekszárd-Palánk, located in South Transdanubia (Hungary), was discovered in the late 1950s and has yielded several hundred archaeological finds, including lithics and faunal remains. Initially, the site was regarded as ‘the latest Palaeolithic’ site in Hungary; later, it was reclassified as an Early Mesolithic industry bridging the Palaeolithic–Mesolithic transition. More recently, the site was proposed to be evidence for the continuity of Epigravettian hunter-gatherers from the Late Glacial to the Early Holocene. However, recent findings regarding the Late Epigravettian in the Pannonian Basin suggest that these populations vanished with the onset of Greenland Interstadial 1. To address this discrepancy, the authors reassessed the lithic assemblage and archaeozoological remains, obtained new radiocarbon dates, and conducted a new excavation to re-evaluate the stratigraphy and geomorphological processes of the site. Our new absolute dates place the site firmly between 11.6–10.4 ka cal BP, and techno-typo-logical analysis attributes it to the Early Holocene Final Epigravettian. These results indicate that hunter-gatherers largely abandoned the Pannonian Basin during Greenland Interstadial 1 and Greenland Stadial 1. This population vacuum ended at the onset of the Preboreal with the arrival of hunter-gatherers from the Balkans or Adriatic coastlines. The repopulation process appears to have been influenced by palaeoecological factors, with the establishment of the pioneering Early Holocene Final Epigravettian settlement in South Transdanubia coinciding with global sea-level rise Meltwater Pulse Event 1B.

Open Access: Yes

DOI: 10.17204/dissarch.2025.321

Laboratory Investigation on Seams between Rails and Hardened Fine-grained, as well as Hadfield Steel Plates with Manual Arc Welding

Szabolcs Fischer Szabolcs Szalai András Brautigam Nikoletta Légmán

Publication Name: Acta Polytechnica Hungarica

Publication Date: 2025-01-01

Volume: 22

Issue: 4

Page Range: 83-102

Description:

In the last decade, hardened fine-grained plate components have been used in turnouts and crossings on Western European urban rail networks, as well as in Hungary, in place of traditional rail or Hadfield steel components. The first crossing was built in Hungary in 2016. These components have many advantages, such as the ease with which they can be machined in the factory; they are less prone to cracking than rails due to their block design (high load-bearing cross-section); however, their weldability to rails and lifetime repairability present numerous challenges for railway turnout manufacturers and operators. There have been numerous studies on joint and repair welding of rails and hardened finegrained materials, but there is little or no information available on joint welding with manual arc welding of these two different materials. The current study aims to investigate the welds of coated electrode manual arc welding of rails (R260 and R400 HT) and hardened finegrained plates (in this case, Hardox 500) under non-laboratory conditions while strictly adhering to technological specifications, in comparison to manual arc welding of rails and Hadfield steels. Laboratory tests included raw material chemical composition, macroscopic tests, micro-hardness measurements, tensile, shear, and bending tests.

Open Access: Yes

DOI: 10.12700/APH.22.4.2025.4.6

Sustainability and Energy Efficiency in Administrative Processes: A Control Theory Approach with P-graph Optimization

Boglárka Eisingerné Balassa László Buics Boglárka Eisinger

Publication Name: Chemical Engineering Transactions

Publication Date: 2025-01-01

Volume: 120

Issue: Unknown

Page Range: 415-420

Description:

As institutions seek to reduce their environmental impact, administrative processes must be optimized for energy and resource efficiency. This study integrates control theory with P-graph methodology to develop a structured framework for sustainable administrative workflows, focusing on university enrollment systems. P-graph-based optimization identifies minimum-energy pathways and optimal resource configurations, while Model Predictive Control (MPC) and nonlinear control enable real-time process adaptation under dynamic conditions. A Life Cycle Analysis (LCA) compares the carbon footprint of digital and paper-based workflows, evaluating IT infrastructure energy use versus traditional operations. Simulated control strategies support energy-efficient decision-making, highlighting best practices for emission reduction and operational flexibility. The result is a decision-support framework that embeds P-graph into a dynamic control context, guiding control strategy selection to minimize energy use and emissions. This scalable approach supports sustainability-oriented process management across public service domains.

Open Access: Yes

DOI: 10.3303/CET25120070

Parameter Sensitivity Analysis and Rotor Topology Optimisation of a Synchronous Reluctance Machine

Mihaly Katona Tamas Orosz

Publication Name: Lecture Notes in Networks and Systems

Publication Date: 2025-01-01

Volume: 1258 LNNS

Issue: Unknown

Page Range: 14-23

Description:

As environmental policies tighten and consumers demand sustainable products, transitioning from a linear to a circular economy is crucial. A promising approach to circular economy is remanufacturing end-of-life electric machines to meet original or new specifications. Designing a rotor for remanufacturing with a different topology to fulfil the new requirements is a complex, non-linear optimisation task. In this paper, a permanent magnet-based synchronous machine is transformed into a synchronous reluctance machine with a new rotor topology. In this research, the Taguchi method is used to estimate parameter sensitivity. For optimisation, the Non-dominated Sorting Genetic Algorithm II was selected. Multi-criteria decision-making methods also helped choosing the optimal designs for maximum torque and minimal torque ripple. The sensitivity analysis revealed that the cut-off barrier shape significantly affects the average torque. In contrast, the height of the inner flux barrier had the most negligible effect. Most parameters showed almost the same magnitudes to torque ripple except for the height of the flux barrier, which again was the least significant. TOPSIS and SPOTIS methods using statisticalvariance and entropy weights showed some disagreements, indicating the complexity of selecting the optimal design.

Open Access: Yes

DOI: 10.1007/978-3-031-81799-1_2