Search Everything

Tip: Search using "First Name + Last Name", e.g.
János Kiss instead of Kiss János.

Publications - 6374

Anti-Zionism in the show trials in Rákosi era Hungary (1948–1953)

Róbert Győri Szabó

Publication Name: Journal of Modern Jewish Studies

Publication Date: 2025-01-01

Volume: 24

Issue: 1

Page Range: 24-49

Description:

The Communist regime in Hungary had an ambivalent and contradictory attitude towards Jews, people of Jewish origin, and the Jewish identity during the Rákosi era. While Zionism was tolerated previously, after the Communist takeover, it began to persecute Zionists through (amongst other means) a series of show trials. In these trials, the weight of different accusations (Zionism, anti-Semitism, cosmopolitanism) changed due to various factors, and therefore the anti-Jewish/anti-Semitic characteristics of the court proceedings also changed dynamically. This study draws on archival sources and the Hungarian historical literature to present a comprehensive view of this time and these circumstances.

Open Access: Yes

DOI: 10.1080/14725886.2024.2381637

Health Tourism—A New System-Model Based on the Four Basic Elements

Erzsébet Printz-Markó Elisabeta Ilona Molnar

Publication Name: Springer Proceedings in Business and Economics

Publication Date: 2020-01-01

Volume: Unknown

Issue: Unknown

Page Range: 253-267

Description:

Due to the complexity of health tourism and due to the excellent thermal, mineral, and medicinal water qualities of Hungary and Romania, as water is one of the four ancient elements determined by Aristotle, such treasures play an important role not only in the field of economy, but also in social life. As one of the oldest forms of tourism is spa-tourism, the present research focuses on this branch of health tourism, which, in its offers, has as its main focus on thermal and medicinal waters in Hungary and Romania. Thanks to the favorable geological conditions of the two neighboring countries, the attraction-based system of health tourism is built on a multi-element model. Based on this, the paper aims at discussing the system of water-based health tourism based on the four ancient elements. These four elements are water, fire, earth, and air. Making use of Lee’s European Health and Wellness Model Services, we have created a four-element water-based health tourism system. The modeling of the system consists of a survey of tourism in the selected spa/wellness facilities. In case of successful testing, the model should be incorporated in the terminology of health tourism in both countries.

Open Access: Yes

DOI: 10.1007/978-3-030-43449-6_14

Sustainable Design of Steel Frames Based on Topological Optimization Considering Geometrical and Material Nonlinearities

Marco Domaneschi Majid Movahedi Rad Raffaele Cucuzza Muayad Habashneh Péter Grubits

Publication Name: Lecture Notes in Civil Engineering

Publication Date: 2025-01-01

Volume: 770 LNCE

Issue: Unknown

Page Range: 204-213

Description:

This research introduces a sustainable approach to designing steel frames, specifically focusing on the topological optimization of I-beam webs. The proposed methodology incorporates the plastic behavior of structural steel and considers geometric nonlinearity. The primary objective of the study is to provide an environmentally sustainable design that achieves maximum material efficiency. To accomplish this goal, the bi-directional evolutionary structural optimization (BESO) approach is employed. Four different beam-column setups, each featuring various beam web formations, were validated according to previous experimental tests. Based on the results, topology optimization was conducted, considering the volume fraction corresponding to the different web openings. Subsequently, the structural behavior in terms of stress intensity of the optimized and conventional configurations was compared. Subsequently, during the final stage, the volume fraction was reduced to 60%, and the performance of the resulting setup was examined. The results of this research demonstrate the efficiency of topology optimization and suggest that this technique has the potential to reduce the material quantity required for producing steel structures while achieving better performance in terms of stress levels, thus providing an environmentally sustainable design.

Open Access: Yes

DOI: 10.1007/978-3-032-08407-1_18

The impact of waste on resource and energy productivity: A circular economy perspective

Sanchita Bansal Dariusz Cichon Priya Nangia Nisha Chanaliya Liliana Śmiech

Publication Name: Journal of International Studies

Publication Date: 2026-01-01

Volume: 19

Issue: 1

Page Range: 207-226

Description:

As cities continue to grow, managing the increasing amount of waste has become an important concern. The study intends to assess the effects of waste generation and treatment on total resource productivity, as well as its subset, energy productivity, in European Union (EU) countries. The research employs the Driscoll-Kraay standard errors fixed effect model using panel regression. The findings reveal that waste generation impacts negatively on overall resource productivity and energy productivity. Furthermore, waste treatment also has a negative impact on resource productivity and energy productivity. These results suggest that despite the reduction in waste volumes achieved through treatment, the process may still have a negative relationship with productivity outcomes. The paper explores the underlying reasons for these findings and evaluates the status of waste generation and treatment across EU countries. Implications suggest introducing public-private partnerships to strengthen waste treatment processes, eco-tax solutions, incentives to green organizations, penalties for environmentally harmful practices, and improved data accessibility for informed decision-making. This study evaluates waste treatment techniques in the EU, focusing on the implementation of circular economy principles to promote sustainable development, increase resource productivity, and strengthen waste management frameworks.

Open Access: Yes

DOI: 10.14254/2071-8330.2026/19-1/11

Surface Modification of Silica Nanoparticles with Ethyl Oleate for the Purpose of Stabilizing Nanolubricants Used for Tribological Tests

D. Tóth I. Szabó Nóra Mike-Kaszás Gábor Bartus Hajnalka Hargitai

Publication Name: Ceramics

Publication Date: 2023-06-01

Volume: 6

Issue: 2

Page Range: 980-993

Description:

Long-term sustainability and decreasing amount of fossil oil reserves require a partial or complete transformation of traditional lubricating oils. The use of silica nanoparticles as a lubricant additive has a huge tribological potential, which has already been discussed in numerous articles. Nanosized silica shows excellent results in reducing friction and preventing wear, but they quickly aggregate and settle after homogenization in oils. For long-term stable dispersion of lubricating oils containing nanoceramics, the surface of the particles was modified with ethyl oleate. The surface modification, the ethyl oleate applied to the surface of the nanosilica, was confirmed by Fourier-transform infrared spectroscopy. Group III based lubricating oil was prepared using the surface-modified nanosilica. The particle size of the nanoparticles in the lubricating oil dispersion was examined by dynamic light scattering. Oscillating tribometer measurements were performed with different concentrations (0.1; 0.2; 0.3 wt%) of nanolubricants. Based on the tribological results, the friction coefficient of the surface-modified nanosilica is more stable, its wear is 15% lower compared to the reference. There is no significant change in the magnitude of the friction coefficient. It can be concluded that the ethyl oleate surface modification method may be suitable for tribological investigations of the acting mechanisms of nanoparticles.

Open Access: Yes

DOI: 10.3390/ceramics6020058

The role of Industry 4.0 technologies in the innovation activities of food manufacturing companies

Judit Oláh Popp József Erdei Edina M. Neményi

Publication Name: Statisztikai Szemle

Publication Date: 2021-01-01

Volume: 99

Issue: 10

Page Range: 978-996

Description:

This study analyses the opinions of Hungarian food production companies on driving forces and barriers of Industry 4.0 investments and their impact on the companies’ business performance. A questionnaire survey was carried out between 2019 and 2020 with data collection from 276 food manufacturing companies. Subsequently, the data were analysed by several statistical methods: factor analysis, K-means clustering, one-way analysis of variance, and cross-tabulation analysis. The goal of this study is to explore the process innovation problems of enterprises and introduce the increasing use of Industry 4.0 tools

Open Access: Yes

DOI: 10.20311/stat2021.10.hu0978

Driving sustainable hydroelectric investments: Leveraging two-step logarithmic normalization for sustainable investment prioritization

Dragan Pamucar Hasan Dincer Serhat Yuksel Serkan Eti Mustafa Hakan Saldı Edanur Ergün Vladimir Simic

Publication Name: Energy Reports

Publication Date: 2025-12-01

Volume: 14

Issue: Unknown

Page Range: 2110-2122

Description:

Hydroelectric energy investments involve substantial techno-economic risks that can increase costs and undermine economic sustainability if not properly managed. However, the literature lacks comprehensive studies addressing these risks. This study proposes a novel decision-making model to identify and prioritize strategies for effective risk management in hydroelectric projects. The model integrates z-scoring for expert selection, the Criteria Importance Assessment (CIMAS) method for weighting criteria, and the Alternative Ranking using Two-Step Logarithmic Normalization (ARLON) method for ranking EU-15 countries according to their strategies. Pythagorean fuzzy numbers are incorporated to better handle uncertainty and improve evaluation accuracy. Results indicate that challenges in adopting new technologies and grid integration issues are the most influential risk factors. The findings provide actionable insights for policymakers and investors to enhance the sustainability and efficiency of hydroelectric energy investments. Policymakers should implement targeted incentives and regulatory frameworks to accelerate technology adoption and address grid integration challenges in hydroelectric projects. Strategic planning should prioritize infrastructure modernization, cross-border energy cooperation, and capacity-building programs to enhance sector resilience and investment security.

Open Access: Yes

DOI: 10.1016/j.egyr.2025.08.047

Blockchain Technology and the Circular Economy: A Systematic Literature Review

Suhaiza Zailani Abderahman Rejeb

Publication Name: Journal of Sustainable Development of Energy Water and Environment Systems

Publication Date: 2023-06-01

Volume: 11

Issue: 2

Page Range: Unknown

Description:

This paper aims to offer an overview of the features in the existing state of research on blockchains in the circular economy. A total of 79 articles published up to 31 May 2022 have been extracted from Scopus and Web of Science. The research design has enabled us to identify what characterises the present state of research on the use of blockchains in the circular economy. It has also allowed us to obtain a new categorisation scheme of the research that has identified five themes and the contributions in each theme and has allowed us to highlight several research gaps. The review findings indicate that the literature revolved around five research themes, namely, the relationship between blockchains and Industry 4.0, the potential of blockchains for circular economy practices, the role of blockchains in energy management, the role of blockchains in waste management and the impact of blockchains on sustainability. This review suggests several future research opportunities and provides practical implications for researchers and practitioners. To the authors' best knowledge, this study represents one of the first attempts to investigate the interplay between blockchain technology and the circular economy.

Open Access: Yes

DOI: 10.13044/j.sdewes.d10.0436

Determining the Deformation Characteristics of Railway Ballast by Mathematical Modeling of Elastic Wave Propagation

Szabolcs Fischer Balázs Horváth Mykola Kurhan Dmytro Kurhan

Publication Name: Applied Mechanics

Publication Date: 2023-06-01

Volume: 4

Issue: 2

Page Range: 803-815

Description:

The article solves the problem of theoretically determining the deformable characteristics of railway ballast, considering its condition through mathematical modeling. Different tasks require mathematical models with different levels of detail of certain elements. After a certain limit, excessive detailing only worsens the quality of the model. Therefore, for many problems of the interaction between the track and the rolling stock, it is sufficient to describe the ballast as a homogeneous isotropic layer with a vertical elastic deformation. The elastic deformation of the ballast is formed by the deviation of individual elements; the ballast may have pollutants, the ballast may have places with different levels of compaction, etc. To be able to determine the general characteristics of the layer, a dynamic model of the stress–strain state of the system based on the dynamic problem of the theory of elasticity is applied. The reaction of the ballast to the dynamic load is modeled through the passage of elastic deformation waves. The given results can be applied in the models of the railway track in the other direction as initial data regarding the ballast layer.

Open Access: Yes

DOI: 10.3390/applmech4020041