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Publications - 6525

Improving the audio game–playing performances of people with visual impairments through multimodal training

Runar Unnthorsson Alin Moldoveanu Hunor Nagy Oana Bălan Oana Bălan György Wersényi Florica Moldoveanu

Publication Name: Journal of Visual Impairment and Blindness

Publication Date: 2017-03-01

Volume: 111

Issue: 2

Page Range: 148-164

Description:

Introduction: As the number of people with visual impairments (that is, those who are blind or have low vision) is continuously increasing, rehabilitation and engineering researchers have identified the need to design sensory-substitution devices that would offer assistance and guidance to these people for performing navigational tasks. Auditory and haptic cues have been shown to be an effective approach towards creating a rich spatial representation of the environment, so they are considered for inclusion in the development of assistive tools that would enable people with visual impairments to acquire knowledge of the surrounding space in a way close to the visually based perception of sighted individuals. However, achieving efficiency through a sensory substitution device requires extensive training for visually impaired users to learn how to process the artificial auditory cues and convert them into spatial information. Methods: Considering all the potential advantages game-based learning can provide, we propose a new method for training sound localization and virtual navigational skills of visually impaired people in a 3D audio game with hierarchical levels of difficulty. The training procedure is focused on a multimodal (auditory and haptic) learning approach in which the subjects have been asked to listen to 3D sounds while simultaneously perceiving a series of vibrations on a haptic headband that corresponds to the direction of the sound source in space. Results: The results we obtained in a sound-localization experiment with 10 visually impaired people showed that the proposed training strategy resulted in significant improvements in auditory performance and navigation skills of the subjects, thus ensuring behavioral gains in the spatial perception of the environment.

Open Access: Yes

DOI: 10.1177/0145482x1711100206

Metaverse a commercial bliss for recreational tourism? A multistage mixed-method investigation

Kamel Khoualdi Ankit Mehrotra Gyan Prakash Csaba Kőmíves Kanishka Pathak

Publication Name: Tourism Recreation Research

Publication Date: 2026-01-01

Volume: Unknown

Issue: Unknown

Page Range: Unknown

Description:

With the rapidly evolving digital landscape, the metaverse presents itself as a promising tool for achieving commercial pursuits in the tourism industry. We apply the presence theory to examine how the industry can leverage the remarkable features of the metaverse to create memorable experiences for tourists at brand destinations–a unique identification or memorable experience associated with a destination, preferably induced by highly immersive services facilitated through the metaverse. The need to discern the impact of metaverse technologies on tourists’ psychological well-being led us to adopt a design science methodology, which enabled us to yield significant findings through a mixed-methods analysis comprising four studies. Firstly, we employ the grounded method approach, utilising think-aloud protocol interviews to elicit various themes. Secondly, we conducted a bibliographic study in RStudio software to extract key insights from 119 Scopus journals. Thirdly, using a structural topic modelling approach, we explored various topics. Finally, we employed the interpretive structural modelling (ISM) approach to establish a cause-and-effect relationship between variables of crucial interest. The significant finding of our study is that the metaverse can be effectively utilised as a highly assistive tool for curating niche experiences for tourists.

Open Access: Yes

DOI: 10.1080/02508281.2025.2611775

From Small Houses to Small Houses: Cabins

Andor Wesselényi-Garay

Publication Name: Metszet

Publication Date: 2024-01-01

Volume: 15

Issue: 2

Page Range: 12-19

Description:

The design of new single occupancy cabins starts with the idea of "a box or house, possibly a box-like house" where the process of generating geometric balance initiates the external form, within this limiting geometry organization of functions needs to be approached in such a manner that the need to design individual items of furniture follows on naturally. Questions of local identity are informed by the choice of materials and general orientation, bearing in mind that architects do not generate a regional character, as this is an act of community over time.

Open Access: Yes

DOI: 10.33268/Met.2024.2.1

An Approach for Hierarchical Clustering of Road Vehicle Vibration Spectrums

Péter Földesi László Róbert Hári

Publication Name: Lecture Notes in Mechanical Engineering

Publication Date: 2023-01-01

Volume: Unknown

Issue: Unknown

Page Range: 799-811

Description:

Research on the non-stationary nature of road vehicle vibrations (RVV) led to advances in simulating such processes. Contemporary methods introduced for the analysis of RVV primarily aimed at partitioning the signal in the time- or time − frequency domain, providing differing segments of a signal. However, a degree of dissimilarity, or conversely similarity, is still challenging to find. Hereunder we argue that in some cases, merely a statement of dissimilarity between neighbouring segments within a signal might be well-enough, though from a broader perspective, the assessment of the similarity of discrete Fourier transforms (DFT) may be the next practical step forward. For this reason, the current paper presents the hierarchical clustering of elements of the short-time Fourier transform (STFT) plane from an RVV measurement; secondly, it introduces a clustering validation metric to arrive at an optimum distance metric and a threshold to use in binary hierarchical clusters.

Open Access: Yes

DOI: 10.1007/978-3-031-15211-5_66

Optimized Implementation of Nature-Based Solutions for Sustainable Economic Benefits in a Watershed with Water Deficit – a Case Study in Hilly Settlements of Lake Velence

Katalin Bene Attila Kálmán

Publication Name: Chemical Engineering Transactions

Publication Date: 2023-01-01

Volume: 107

Issue: Unknown

Page Range: 265-270

Description:

The adverse effects of climate change on water resources have been demonstrated recently. The shallow surface and groundwater levels throughout Europe in 2022 have not been restored, even during the winter-spring recharge period. Water scarcity causes economic damage and may lead to food supply shortages and social tension. For Lake Velence, extreme drought caused damage throughout the watershed. The record low water levels kept away tourists and reduced the revenues. Stakeholder cooperation on sustainable water-related developments is essential to overcome the water deficit in the area. Surveys among local mayors confirmed that there is an affinity and possibility to sustainably utilize rainwater with the application of nature-based solutions. These infrastructures have low impacts on the lake’s water level while noticeably improving plant and agricultural irrigation, though the benefits are mostly unknown among stakeholders. Consequently, profitability per area unit for agricultural and farming activities can be increased. The research quantifies the possible positive effects of economic incentives used to implement nature-based solutions in the hilly settlements of Lake Velence; they sustainably increase the yield of agricultural production and food security and economically beneficial tools for mayors to optimize placement of nature-based solutions within the catchment to achieve adequate soil quality and additional social benefits.

Open Access: Yes

DOI: 10.3303/CET23107045

Exploratory analysis of zero waste theory to examine consumer perceptions of sustainability: A covariance-based structural equation modeling (CB-SEM)

Judit Petra Koltai Tamás Vinkóczi Éva Heimné Rácz

Publication Name: Cleaner Waste Systems

Publication Date: 2024-08-01

Volume: 8

Issue: Unknown

Page Range: Unknown

Description:

Introduction: The analysis of corporate and consumer sustainability practices is currently the focus of several scientific disciplines due to their environmental impact and diversity. Objective: This research aims to create a hierarchy of consumer perceptions of zero waste thinking that can guide government decisions regarding university communities' sustainability efforts. To achieve the objectives of this study, Hungarian university citizens (students, faculty, staff) as potential zero waste consumers in Győr were involved in a purposive sampling approach. Methods: This study adopted the Covariance-Based Structural Equation Modeling (CB-SEM) methodology to prove the hypotheses related to the 7Rs regarding Zero Waste perceptions of university citizens. The rethink element of the hierarchy was defined as the default condition for the 7 R application and therefore remained at the top of the hierarchy as an endogenous variable. Results: The study concluded that it is possible to adapt a business 7 R framework for consumer use, but only 5Rs can be applied. The analysis was conducted at a 90% confidence level, under which condition the independent variables together explain 87% of the variance of the rethink factor. The results show that the four constructs, namely rot (β =0.12, ρ<0.1), reduce (β =0.21, ρ<0.1), recycle (β =0.26, ρ<0.05), and reuse (β =0.43, ρ<0.05) significantly affect rethinking. Based on these regression weights, a hierarchy of importance can be established. In line with the original 7 R business concept, rethink is at the top of the hierarchy, followed by the other elements. Conclusions: The results suggest that the zero waste attitudes of university citizens are currently limited to the 5Rs, which should require government leadership to strengthen these factors or a more consistent presence and support for the 2Rs that are missing from the established model. Governments can use the results of this research in their sustainability-related decisions.

Open Access: Yes

DOI: 10.1016/j.clwas.2024.100146

Investigation of Lubrication Capability of Zinc Oxide-Reinforced Nanolubricants in Automotive Applications †

D. Tóth I. Szabó

Publication Name: Engineering Proceedings

Publication Date: 2024-01-01

Volume: 79

Issue: 1

Page Range: Unknown

Description:

This article aims to introduce the tribological investigation of nanoscale zinc oxide particles as friction and wear reduction additives in the automotive industry and to present the results of the measurements. The surface-activated nanoparticles were homogenized into a neat Group-III-type base oil at five different concentrations, and their tribological properties were tested using a simplified ball-on-disc tribosystem. The arising wear scar images were investigated, and the occurred wear volume values were also calculated using a confocal microscope. The evaluation presented excellent friction and wear reduction properties, especially at higher concentrations (0.4 and 0.5 wt%). The authors would like to highlight the tribological decreasing potentials provided by such nanoparticles. Nanoparticle-reinforced lubricants can be one of the future solutions to developing operating machines with an achievable maximum energy efficiency.

Open Access: Yes

DOI: 10.3390/engproc2024079087

A Novel Feedback Linearisation Control of Flyback Converter

Miklós Kuczmann Miklos CSIZMADIA

Publication Name: Power Electronics and Drives

Publication Date: 2023-01-01

Volume: 8

Issue: 1

Page Range: 74-83

Description:

This paper presents a novel approach for feedback linearisation in a continuous conduction mode (CCM) of the flyback converter. Due to the unstable zero dynamics, a flyback converter has highly non-linear behaviour. Flyback converters mostly use the indirect (current) control mechanism. In contrast, this paper shows a direct control of the output voltage of a flyback converter with feedback linearisation (a non-linear control method). In the designed controller, an error integrator is applied to improve the dynamic and steady-state behaviour of the controller. To design the feedback linearisation method, the state-space averaged model is determined. The converter and the proposed control are tested in a MatLab/Simulink environment, and the results are compared with other optimal controller methods. The results provide feedback about the efficiency and practical implementation of the proposed method.

Open Access: Yes

DOI: 10.2478/pead-2023-0006

Psychological and anthropometric characteristics of a Hungarian Elite Football academy's players

József Bognár István Csáki Selmeci Zoltán Kiss Barbara Fózer-Selmec Zsolt Szakály

Publication Name: Physical Culture and Sport Studies and Research

Publication Date: 2017-03-01

Volume: 73

Issue: 1

Page Range: 15-26

Description:

Due to the fact that neither physical nor physiological and anthropometric differences in adolescents can serve as definitive differentiating factors in terms of choosing successful and non-successful players, coaches are encouraged to focus more on thepsychological characteristics ofyoung players. Therefore, the purpose of this study was to examine football players' psychological skills in an elite football academy as related to age and position. Every young player at one of the most successful football academies in the country participated in this study (N=119, M=16.44±1.17). The sample was divided into four age groups according to the championship system (U16, U17, U18, U21), and into specific football positions (goalkeeper, defender, midfielder, and striker). Basedonthe results, the young academy football players had a low level ofamotivation (1.45±0.68), a high level of extrinsic motivation (5.96±0.64), and can be characterized with a higher level task (4.02±0.62) than ego orientation (3.01±0.62). All of the results for coping skills were in the mid-range (M=3.00-3.41). There were no differences in motivation, perceived motivational climate, and coping among the football players regarding their positions. However, there were significant differences among the age groups in perceived motivation and coping skills. Older players were more egooriented and had a higher level of peaking under pressure, while younger players demonstrated higher level task, ego, and coach ability levels. Football coaches need to focus less on positions and more on age differences when dealing with motivation, perceived motivation, and coping.

Open Access: Yes

DOI: 10.1515/pcssr-2017-0002