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Publications - 6515

Events based on gastronomic traditions in West Hungary, in Győr-Moson-Sopron County

Adel Vehrer Csaba Kőmíves

Publication Name: Journal of Infrastructure Policy and Development

Publication Date: 2024-01-01

Volume: 8

Issue: 12

Page Range: Unknown

Description:

The transfer of knowledge and the preservation of traditions is passed down from generation to generation. The main objective of this study was to explore people’s knowledge of the gastronomic heritage of the Kisalföld regions through an analysis of the county’s (attendance to, decision-making and willingness to spend on food and beverages) taking place in the county, such as the Flavours of Szigetköz, the County Wines Festival, the Flavours of Rábaköz or Eszterházy Baroque Food Festival at Fertőd. A quantitative research was used to analyse the topic (N = 666), the sample is not representative and the selection of respondents was random. Data were collected between 1 September 2023 and 31 October 2023 using electronic questionnaires shared on Google Drive. Data were processed using SPSS 25.0 and MS Office Excel in addition to the descriptive statistical data (modus, median, standard deviation), correlation, and crosstabulation analyses. Important research questions of the study were whether the respondents’ place of respondents influences gastronomic awareness whether age determines willingness to travel to attend a gastronomy event, The most popular gastronomic event in the county was the Vegetables of Hanság Region (mean 3.35), and the least popular was the Szigetköz Flavours of Szigetköz festival (mean 3.01). The key finding of the study is that an essential aspect of sustainability for decision-makers is to know the characteristics of tourists (middle-aged female target group), to select and maximize the different program packages in the marketing of the offer, to distribute the traffic and to avoid mass tourism.

Open Access: Yes

DOI: 10.24294/jipd.v8i12.8347

Enhancing Decision-Making Through Generative AI: Human-AI Interaction in Organizational Contexts

Boglárka Eisingerné Balassa Réka Koteczki

Publication Name: International Scientific Business Conference Limen Leadership Innovation Management and Economics Integrated Politics of Research

Publication Date: 2024-01-01

Volume: 2024

Issue: Unknown

Page Range: 89-98

Description:

In recent years, Generative Artificial Intelligence (GAI) has evolved significantly and is playing an increasingly important role in supporting business and organisational decision-making. This research aims to explore the role and potential of GAI in this area through a systematic literature review using the PRISMA model. It focuses on the specific tasks in which generative AI can support decision makers and the advantages and disadvantages of using the technology. The research will pay particular attention to the ways in which generative AI can influence human-AI interaction and reduce cognitive biases in the decision-making process. The analysis will explore the experiences and limitations of AI-based decision-making, highlighting the practical benefits and potential limitations of the technology in the corporate environment. The results of this research can contribute to a more effective application of generative AI in decision support and help organisations to optimise their decision-making processes.

Open Access: Yes

DOI: 10.31410/LIMEN.S.P.2024.89

Multiple Roles of Hydrogen in Future Mobility

Virag Meszaros László Csizmadia-Csiky Barna Hanula

Publication Name: Chemical Engineering Transactions

Publication Date: 2024-01-01

Volume: 114

Issue: Unknown

Page Range: 895-900

Description:

Sustainability and GHG reduction are the pivotal points of any future mobility. The European policymakers prioritised the BEV technology from 2035 onward. This decision was based on the universal consensus that the BEV technology offers the highest efficiency and that sufficient green energy will be available on time. In this study, the authors will analyse the feasibility of this concept. Due to the stochastic availability of renewable power, a reliable power supply requires adequate storage capacity at the necessary scale and time. The other universal statement is that the production of e-fuels is too inefficient to compete with BEV technology. Based on different publications, the authors are convinced that only chemical storage can fulfil the requirements nationally or globally. The inevitable first step of this energy conversion is water electrolysis, energised by renewables. The losses occurring during the production of green hydrogen are an unavoidable burden on green electricity production. Due to the availability of the produced hydrogen, these losses do not count toward producing e-fuels like methanol, methane, and ammonia. In that case, the baseline of any efficiency comparison alters, and alternative and e-fuels will severely challenge the BEV technology in multiple applications and locations. These fuels will allow further improvements in the ICE technology. The most important finding of this study is that the investigation of separated sub-systems will not deliver the optimum solution for mobility. Only a holistic approach considering the interactions between power generation, power storage, and propulsion technology leads to reliable answers, and hydrogen is the key element of the solution.

Open Access: Yes

DOI: 10.3303/CET24114150

Optimizing Experimental Design to Determine Friction and Wear Characteristics of Used Oil Contaminated with E20 Fuel †

András Lajos Nagy Dominika Pintér

Publication Name: Engineering Proceedings

Publication Date: 2024-01-01

Volume: 79

Issue: 1

Page Range: Unknown

Description:

The aim of this paper is to develop an experiment design to determine the wear and friction parameters of an SAE 0W20-grade reference oil and an SAE 0W20-grade used oil contaminated with E20 fuel. Wear tests in a ball–disc arrangement were conducted at temperatures and loads established using Design of Experiments. A surface analysis of the wear scars was performed using a digital microscope, while the oils were investigated using a viscometer and a Fourier-transform infrared spectrometer. Design of Experiments was further employed to develop two models using R software. For the reference oil, the developed model was only suitable for screening, while the model for the E20 fuel contaminated used oil showed a 9.8% difference between the measured and estimated coefficients of friction.

Open Access: Yes

DOI: 10.3390/engproc2024079057

Numerical Modeling of Multi-Pass Arc Welding Processes: Integration with Experimental Validation for Distortion analysis and Characterization

János Szép Marco Domaneschi Majid Movahedi Rad Raffaele Cucuzza Daniel Gosztola Péter Grubits

Publication Name: Advances in Transdisciplinary Engineering

Publication Date: 2024-01-01

Volume: 59

Issue: Unknown

Page Range: 248-254

Description:

The increasing significance of numerical simulations in the welding industry arises from their capacity to improve manufacturing conditions, ensuring greater effectiveness and precision. The utilization of the finite element method (FEM) enables comprehensive and focused calculations of mechanical and material structural alterations induced by the welding process. Acquiring knowledge of these parameters not only serves to augment the quality of the manufacturing process but also yields consequential benefits, such as reducing adverse effects like base plate distortion. Consequently, enhancing structural performance and prolonging lifespan becomes achievable, aligning with overarching sustainability goals. To accomplish this objective, this paper involves the numerical simulation of a welding process based on experimental tests, with a focus on investigating the deformations caused by the heat generated during welding as the primary parameter of interest. Advanced modeling techniques are employed to assess the results as part of a comprehensive thermo-mechanical analysis framework, examining and characterizing the impact of the temperature distribution. In the finite element analysis (FEA), a total of 12 welding cycles were systematically modeled to align with experimental conditions, incorporating cooling intervals and preheating considerations. The outcomes of this research exemplify the potential of numerical simulation in the welding industry, demonstrating a diverse range of results achieved through FEA to enhance the quality of structures.

Open Access: Yes

DOI: 10.3233/ATDE240552

Wide Open Spaces: How Low-Context Cultures Foster Creativity

Brant von Goble

Publication Name: International Scientific Business Conference Limen Leadership Innovation Management and Economics Integrated Politics of Research

Publication Date: 2024-01-01

Volume: 2024

Issue: Unknown

Page Range: Unknown

Description:

Why are some cultures more creatively productive than others? This paper explores this question through the framework of high-and low-context cultures. It argues that low-context cultures—where listeners are assumed to have minimal background knowledge or implicit understanding—foster creativity by forcing evaluation of a larger mental search space and encouraging speakers to assess and present their ideas explicitly. High-context cultures pro-mote seamless communication through shared understanding, but they may inadvertently stifle creativity by limiting the mental flexibility of presenters and audiences. They also tend to enforce conformity to cultural expectations. This paper concludes with recommendations to nurture originality and non-traditional thinking in high-context cultures.

Open Access: Yes

DOI: 10.31410/LIMEN.2024.325

Determination of the health-protective effect of different Sempervivum and Jovibarba species

E. Lakatos V. Kapcsándi Székelyhidi Rita Beatrix Sik Angéla Mrázik Zsolt Giczi

Publication Name: Journal of King Saud University Science

Publication Date: 2024-01-01

Volume: 36

Issue: 1

Page Range: Unknown

Description:

This study aimed to examine the micro- and macroelements, as well as the total antioxidant, and polyphenol content of 22 different types of dried houseleek, and fresh plant decoctions. The measurement of antioxidant and polyphenol content was carried out with two drying methods- a drying cabinet and lyophilization. The plants, without exception, were provided by Berger Trio Kft. from Jánossomorja (Hungary), thus, the influencing effect of the environment is negligible in the case of the tested species. Based on the results, the type of houseleek has a clear influencing effect on the amount of the tested constituents. The investigated microelements were B, Cu, Fe, Mn, and Zn, while Ca, K, Mg, Na, P, and S were examined among the macroelements. In terms of microelement content, Mn was present in outstanding amounts (20.67–148.00 mg/kg DW), while among macroelements Ca (44.43–95.27 g/kg DW) and Na (24.07–128.50 g/kg DW) was present in larger quantities in the samples. It can be said that in the case of samples with a high amount of antioxidants and polyphenols, the element content is low and the reverse is also true. During the examination of the dried houseleeks, outstanding values were obtained for the tested compounds. The antioxidant values of the dried leaves were between 2.22 and 317.74 mg AAE/g DW, while their polyphenol contents ranged from 5.52 to 144.16 mg GAE/g DW, however, the drying methods had some influencing effect. Regarding fresh plant decoctions, the polyphenol contents (0,02–1,11 mg GAE/g FW) were negligible, while the amount of antioxidants (2,38–4,61 mg AAe/g FW) were low. With other solvents (e.g. alcoholic extraction - tinctures), better results are likely to be achieved. Houseleek species (especially in dried form) are an excellent source of trace elements, antioxidants, and phenolic components so they can even be used as additives to functional foods or consumed on their own in the form of encapsulated dietary supplements.

Open Access: Yes

DOI: 10.1016/j.jksus.2023.102998

Analysis of the Aerodynamic Parameters of Road Vehicles Affected by Weather Conditions

Istvan Lakatos Péter Brúnó

Publication Name: Chemical Engineering Transactions

Publication Date: 2024-01-01

Volume: 114

Issue: Unknown

Page Range: 1033-1038

Description:

Optimizing the aerodynamic parameters of road vehicles is essential due to their impact on the environment. It is a special aim of developments, including electric and non-electric vehicles. A lot of research is being conducted according to energy efficiency and range. These parts are the most significant directions of development. Aerodynamic parameters such as drag coefficient exert a significant influence on vehicle energy efficiency. The purpose of this paper is to investigate the aerodynamic parameters of the Ahmed body in rainy weather conditions. Different types of rain and vehicle speeds are studied and compared to each other to examine their effect on the drag coefficient. The examination is carried out using the Computational Fluid Dynamics (CFD) method. In the two-phase simulations, the rain is modeled as solid particles. Results can be used to obtain the most fuel- or electricity-efficient rain type-vehicle speed combinations and thereby can help to contribute a more sustainable transport. The results clearly show that rain has a measurable effect on the drag coefficient. As the rain intensity increases, the drag coefficient increases, too. However, there are uncertainties in the upward trend. As airspeed increases, the increasing trend becomes more stable.

Open Access: Yes

DOI: 10.3303/CET24114173

Comparison of Mechanical Properties of PLA-Based Biocomposites Filled with Different Agricultural By-Products

László Lendvai Tej Singh Sándor K. Jakab

Publication Name: Advances in Transdisciplinary Engineering

Publication Date: 2024-01-01

Volume: 59

Issue: Unknown

Page Range: 486-493

Description:

In this study, biopolymer composites were developed using poly(lactic acid) (PLA) as a polymer matrix. Various agricultural by-products, including flax seed meal, rapeseed straw, and mustard seed meal, were added as a reinforcement. The research aimed to provide insight into the valorization of cheap, readily available residues generated in the agricultural industry and assess the mechanical properties of composites prepared using them. The experimental fabrication was conducted by compounding PLA with agro-waste particles in 10 and 20 wt% concentrations. These components were melt mixed with a twin-screw extruder and injection molded into standardized forms. The resulting fabricated composites were tested for tensile and flexural mechanical properties and hardness. Through scanning electron microscopy, images of the natural particles were taken to better understand their structure, geometry, and possible ways of interaction between them and the PLA matrix. The results of quasi-static mechanical tests suggest that using agricultural by-products can effectively improve Young's modulus and flexural modulus of PLA but at the cost of tensile and flexural strength, which decreased with the by-products' introduction. Of the three agro-waste options, rapeseed straw emerged as the superior choice because it only marginally reduced the mechanical strength of the PLA and enhanced its stiffness the most. Hardness was the least affected property, test results showed that the added fillers did not substantially change the polymer matrix's hardness.

Open Access: Yes

DOI: 10.3233/ATDE240584