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Publications - 6515
From Small Houses to Small Houses: Cabins
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
Investigation of Lubrication Capability of Zinc Oxide-Reinforced Nanolubricants in Automotive Applications †
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
Innovative Thermal Insulations from Cornstalk and Cereal Straw for Sustainable Architecture
Publication Name: Chemical Engineering Transactions
Publication Date: 2024-01-01
Volume: 114
Issue: Unknown
Page Range: 841-846
Description:
Nowadays, architects are increasingly prioritising sustainability, leading to the rise in the popularity of construction products made from renewable raw materials. Using thermal insulation materials has become crucial to ensure the energy-efficient operation of buildings. In the building materials market, especially in the field of thermal insulation products, there is a growing interest in products made from natural, renewable raw materials. This is because their use can reduce the energy consumption of buildings but also the CO2 emissions of the construction industry. There is an urgent need to utilise various industrial and agricultural by-products. In Hungary, a large amount of cereal straw and cornstalks are not used or are burned, which increases CO2 emissions. Using them as a construction product would be an excellent alternative solution for reducing the greenhouse gas emissions of the construction industry. In recent years, there have been two attempts to produce building insulation materials from cornstalks and cereal straws. As part of comprehensive research, a laboratory qualification test of both products was carried out. Based on the evaluation of the results, both thermal insulation products seem promising. Their material properties support their applicability in building construction, although some limitations should be considered. This paper aims to present the two experimental products mentioned above, analyse their material properties, and evaluate their applicability in the construction industry.
Open Access: Yes
DOI: 10.3303/CET24114141
A picolinamide fungicide for controlling Cercospora-leaf spot (CLS) of sugar beet
Publication Name: Bio Web of Conferences
Publication Date: 2024-08-23
Volume: 125
Issue: Unknown
Page Range: Unknown
Description:
Cercospora-leaf spot (CLS) of sugar beet, caused by Cercospora beticola Sacc., is a major foliar disease of sugar beet in all sugar beet growing areas, worldwide, causing up to 50% yield loss. The disease is now dominant in almost all sugar beet growing areas of Europe, including Hungary. The use of fungicides has been being an integral part of the control of CLS of sugar beet. In recent decades, resistance of C. beticola to fungicides belonging to different groups of active substances has been described in many countries worldwide, including Hungary. The picolinamides are a new distinct group of fungal respiration inhibitors (QiI – FRAC Group 21) promise to be a good alternative in the management of fungicide resistance in crops. The florylpicoxamid fungicide were tested and evaluated over two seasons, in vegetation period of 2020 and 2021 for controlling CLS of sugar beet in Hungary. This fungicide was applied as straight formulated product at a range of dose rates, and they showed very effective control of CLS compared to the untreated control check plots and the reference fungicide products difenoconazole and epoxiconazole. All tested dose rates of florylpicoxamid provided effective control of against CLS of sugar beet. The area under the disease progress curve values (AUDPC) was significantly correlated with yield decrease, but AUPDC did not correlated with sugar content of the roots. Additionally, the results showed in two investigated years, the efficacy of florylpicoxamid for the control on CLS of sugar beet crop.
Open Access: Yes
Exploratory analysis of zero waste theory to examine consumer perceptions of sustainability: A covariance-based structural equation modeling (CB-SEM)
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
Psychological and anthropometric characteristics of a Hungarian Elite Football academy's players
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
Tax knowledge in connection with tax compliance in Hungary
Publication Name: Journal of Infrastructure Policy and Development
Publication Date: 2024-01-01
Volume: 8
Issue: 11
Page Range: Unknown
Description:
During the examination of tax education, a significant part of the professional literature defines taxpayers as a homogeneous group, however, among others, the level of educational attainment and the digital skills of taxpayers are also important. This research investigates the role of knowledge in connection with tax compliance. The article is based on the statements from the professional literature and analysis of secondary data from national and international authorities and institutions. It also includes some comparisons of the components of the COM-B model on the data of nine European countries and sets up a model of tax behaviour based on Hungarian conditions. According to the classification based on the comparison, the performance of Hungary is at the lowest level among nine examined countries. Considering the complexity of the tax system, the knowledge of taxpayers is incomplete in Hungary. A developed version of the COM-B model points out that there is a close connection between capability and opportunity as well and these components can reinforce each other. With the adequate motivation and literacy as well as the knowledge of procedures can facilitate tax compliance. It can be concluded that successful tax education recognises and targets various groups of taxpayers. The Hungarian tax authorities treat taxpayers as a homogeneous group, however, there are slight developments by using several communication channels. In the current situation, the most important is to find the forms and levels of tax education to make the taxpayer able to comply.
Open Access: Yes
Improved control performance of the 3-DoF aeroelastic wing section: a TP model based 2D parametric control performance optimization
Publication Name: Asian Journal of Control
Publication Date: 2017-03-01
Volume: 19
Issue: 2
Page Range: 450-466
Description:
Based on the most recent Tensor Product model transformation solutions, the paper presents an improved control performance for the most recent version of the three Degree of Freedom aeroelastic wing section model including Stribeck friction, according to signals pitch, plunge, trailing edge and control value, based on practical engineering criteria such as overshoot, undershoot, signal end values and settling time. This is achieved through proposing a novel two dimensional parametric convex hull manipulation based method for Tensor Product model transformation based Control Design Frameworks. The approach provides two TP model representations for the different requirements of the controller and observer of a given model, opening the possibility to utilize the TP model transformation's convex hull manipulation potential in control performance optimization for a separate optimization of the two TP model representations. Numerical simulation results are provided to illustrate the control performance improvements of the aeroelastic wing section model through the proposed 2D parametric convex hull manipulation based design method.
Open Access: Yes
DOI: 10.1002/asjc.1418
Ballast Settlement Accumulation in Zones with Unsupported Sleepers
Publication Name: Transportation Infrastructure Geotechnology
Publication Date: 2024-08-01
Volume: 11
Issue: 4
Page Range: 2598-2637
Description:
The high influence of impact and vibration on the behavior of crushed stone and ballast materials has been known for a long time. The zones with unsupported sleepers, which are always present in transition zones, crossings, welds, etc., are typically characterized by impact interaction, ballast full unloading, and additional preloading. However, no studies on ballast layer settlements consider impact vibration loading. Moreover, the influence of the cyclic loading on the ballast settlement intensity is considered ambiguously, with both decelerating and accelerating trends. The comprehensive literature review presents the influence of factors on settlement intensity. The present study aims to estimate the long-term processes of sleeper settlement accumulation depending on the loading factors: impact, cyclic loading, and preloading. The typical for a void zone ballast loading pattern was determined for various void sizes and the position along the track by using a model of vehicle-track interaction that was validated by experimental measurements. The loading patterns were parametrized with four parameters: maxima of the cyclic loading, impact loading, sleeper acceleration, and minimal preloading. A specially prepared DEM simulation model was used to estimate the ballast settlement intensity after initial settlement stabilization for more than 100 loading patterns of the void zone cases. The settlement simulation results clearly show that even a low-impact loading pattern causes many times increased settlement intensity than ordinary cyclic loading. Moreover, the initial preloading in the neighbor-to-void zones can cause even a decrease in the settlement intensity compared to the full ordinary or partial unloading. A statistical analysis using a machine learning approach and an analytic one was used to create the model for the intensity prediction regarding the loading patterns. The analytic approach demonstrates somewhat lower prediction quality, but it allows to receive plausible and simple analytic equations of the settlement intensity. The results show that the maximal cyclic loading has a nonlinear influence on the settlement intensity that corresponds to the 3–4 power function, and the impact loading is expressed by the linear to parabolic function. The ballast’s minimal preloading contributes to the reduction of the settlement intensity, especially for high cyclic loadings that are typical for neighbor-to-void zones. The results of the present study could be used for the complementing of the present phenomenological equations with the new factors and further application in the algorithms of the settlements accumulation prediction.
Open Access: Yes
