Search Everything

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

Publications - 6278

Comparative Life Cycle Assessment of Alternative Fuels for Transport Sector Decarbonisation

P. Németh Péter Németh Chunyan Si Botond Mecséri Petar Sabev Varbanov

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

Publication Date: 2025-12-01

Volume: 13

Issue: 4

Page Range: Unknown

Description:

Decarbonising the transport sector is crucial, yet selecting the most suitable alternative fuels remains challenging. This study applies life cycle assessment to evaluate six alternative fuels, such as hydrogen, compressed natural gas, methanol, ethanol, Fischer-Tropsch gasoline, and diesel, against conventional gasoline, diesel, and grid electricity, focusing on global warming potential and acidification potential. Emissions were analysed using the Greenhouse gases, Regulated Emissions, and Energy use in Technologies model under two scenarios: current technologies (2025) and projected advancements (2050). The results indicate that, compared to gasoline, compressed natural gas reduces global warming potential and acidification potential by 27% and 23% in the short term, while gaseous hydrogen achieves reductions of 63% and 46% in the long term, respectively. These findings reinforce the theoretical foundation for transport sector decarbonisation and contribute to its sustainable development. Future research will broaden the assessment framework by incorporating complete vehicle life cycle analysis, evaluating additional alternative fuels, and integrating a wider set of indicators.

Open Access: Yes

DOI: 10.13044/j.sdewes.d13.0607

Enhancing ultrafiltration performance for dairy wastewater treatment using a 3D printed turbulence promoter

Cecilia Hodúr Szabolcs Kertész Ákos Ferenc Fazekas Nikolett Sz Gulyás Aws N. Al-Tayawi József Richárd Lennert Balázs Szegedi Gréta Gergely

Publication Name: Environmental Science and Pollution Research

Publication Date: 2023-10-01

Volume: 30

Issue: 50

Page Range: 108907-108916

Description:

Dairy factories annually generate an increasing amount of wastewater, which can cause eutrophication due to high concentrations of amino acids and lipids. To address this issue, membrane technology has emerged as a promising solution, but membrane fouling remains a significant challenge, since it can cause decreased flux, decrease membrane rejection performance, and increased energy demand. This study aimed to reduce membrane fouling by integrated a three-dimensional printed (3DP) turbulence promoter into an ultrafiltration dead-end cell and varying stirring speeds. Two mathematical models, Hermia and resistance-in-series, were used to analyze the fouling process. According to both models, the cake layer formation model indicated the most prevalent fouling mechanism. Specific energy demand, permeate flux, membrane rejection, and membrane reversible and irreversible resistances were measured, calculated, and compared. The results suggest that the combination of an integrated 3DP turbulence promoter and high stirring speeds can effectively reduce membrane fouling in a dairy wastewater treatment module.

Open Access: Yes

DOI: 10.1007/s11356-023-30027-4

Extending the functional training approach for B-splines

Pedro M. Ferreira Cristiano L. Cabrita António E. Ruano László T. Kóczy

Publication Name: Proceedings of the International Joint Conference on Neural Networks

Publication Date: 2012-08-22

Volume: Unknown

Issue: Unknown

Page Range: Unknown

Description:

When used for function approximation purposes, neural networks belong to a class of models whose parameters can be separated into linear and nonlinear, according to their influence in the model output. This concept of parameter separability can also be applied when the training problem is formulated as the minimization of the integral of the (functional) squared error, over the input domain. Using this approach, the computation of the gradient involves terms that are dependent only on the model and the input domain, and terms which are the projection of the target function on the basis functions and on their derivatives with respect to the nonlinear parameters, over the input domain. This paper extends the application of this formulation to B-splines, describing how the Levenberg-Marquardt method can be applied using this methodology. Simulation examples show that the use of the functional approach obtains important savings in computational complexity and a better approximation over the whole input domain. © 2012 IEEE.

Open Access: Yes

DOI: 10.1109/IJCNN.2012.6252741

Emerging Platform Work in the Context of the Regulatory Loophole (The Uber Fiasco in Hungary)

Miklós Illéssy Saeed Nosratabadi József Pap Csaba Makó

Publication Name: Journal of Labor and Society

Publication Date: 2022-01-01

Volume: 26

Issue: 4

Page Range: 533-554

Description:

Platform works are swiftly turning into a big, perhaps game-changing force in the labor market. From low-skilled, low-paid services (like passenger transport) to high-skilled, high-paying project-based labor (like developing artificial intelligence algorithms), digital platforms can handle a wide range of tasks. Our paper discusses the platform-based content, working conditions, employment status, and advocacy problems. Terminological and methodological problems are dealt with in-depth in the course of the literature review, together with the ‘gray areas’ of work and employment regulation. To examine some of the complex dynamics of this fast-evolving arena, we focus on the unsuccessful market entry of the digital platform company Uber in Hungary 2016 and the relationship to institutional-regulatory platform-based work standards. Dilemmas about the enforcement of labor law regarding platform-based work are also paid special attention to the study. Employing a digital workforce is a challenge not only for labor law regulation but also for stakeholder advocacy.

Open Access: Yes

DOI: 10.1163/24714607-bja10054

A systematic literature review of the global experience of applying the gamification approach in teaching school geography

Tamara Gajić Gaukhar Aubakirova Didar Kadirbayeva Yerlan Issakov Zhulduz Nizamatdinova Nurbol Ussenov Nurdana Assen Perizat Bakirbayeva Nazerke Shernay Dávid Dénes Lóránt

Publication Name: Frontiers in Education

Publication Date: 2026-01-01

Volume: 11

Issue: Unknown

Page Range: Unknown

Description:

The rapid development of innovative learning technologies in recent years has served as a basis for the transition from traditional teaching methods to interactive, learner-centered approaches. Among such methods, gamification is recognized as a promising pedagogical tool aimed at increasing students’ interest, motivation and engagement in learning. This article proposes a systematic literature review (SLR) of research on the use of gamification in school geography teaching. This review followed the PRISMA protocol and PICOS criteria to ensure transparency and reproducibility. The purpose of the study-Evaluating the effectiveness and directions of gamification in geography lessons and identifying problems arising in the process of its implementation in practice. The research was based on the PRISMA methodology. The search in the international databases Scopus and Google Scholar initially resulted in 22,712 documents. After refining the search, duplicates and irrelevant papers were excluded and 40 scientific articles published between 2019 and 2024 were analyzed in depth. VOSviewer software was used to visualize bibliometric connections and thematic clusters. The results showed that gamification has a positive effect on students’ cognitive development, motivation and spatial reasoning. However, the use of subject-specific digital tools, adapting content to match students’ learning styles, and assessing long-term changes in motivation have not been sufficiently explored. Experience with interactive maps, mobile applications and VR/AR technologies, especially in geography, is rare. Infrastructure, teacher training and challenges of adaptation in rural school settings also require attention. The results show that gamification has a positive effect on students’ motivation and cognitive development, but the limitations are related to the small number of empirical studies and insufficient representation of developing countries. Future research should evaluate the long-term effects of gamification and the possibilities of its wider application in geography teaching.

Open Access: Yes

DOI: 10.3389/feduc.2026.1722540

The effects of different carbon-fiber plate shapes in shoes on lower limb biomechanics following running-induced fatigue

Yaodong Gu Dong Sun Yang Song Zhenghui Lu Yufei Fang Yufan Xu Chengyuan Zhu Chen Hu

Publication Name: Frontiers in Bioengineering and Biotechnology

Publication Date: 2025-01-01

Volume: 13

Issue: Unknown

Page Range: Unknown

Description:

Different shapes of carbon-fiber plates (CFPs) are likely to affect lower limb biomechanics, particularly under conditions of running-induced fatigue, and potentially impact runners’ performance and risk of injury. However, no studies have yet elucidated the precise effects of CFP shapes on the lower limb biomechanical characteristics subsequent to running-induced fatigue. The purpose of this study was to investigate the effects of different CFP shapes in running shoes on the lower limb biomechanics of runners following running-induced fatigue. 12 male runners (aged 21.8 ± 1.3 years, mass 59.1 ± 4.1 kg, height 168.9 ± 2.2 cm, weekly running distance 68.8 ± 5.5 km/week) were recruited for this study. Two-way repeated measures ANOVA was used to compare kinematic and kinetic data, while SPM (Statistical Parametric Mapping) was used to assess the activation levels of lower limb muscles. Compared to wearing flat CFP shoes (“Flat”), wearing curved CFP shoes (“Curve”) resulted in a significant reduction in the hip (p = 0.034) and knee contact angle (p < 0.000), as well as a significant decrease in the hip flexion moment (p = 0.008). The activation level of the tibialis anterior (TA) was significantly higher when wearing “Curve” in pre-fatigue compared to “Flat”, whereas the opposite was observed post-fatigue. The curved CFP altered the bending angle of the forefoot, thereby significantly reducing the joint angles and joint moments of the hip and knee.

Open Access: Yes

DOI: 10.3389/fbioe.2025.1539976

The Effect of the Friction Coefficient Between the Steel-Concrete Connection on the Horizontal Load Capacity

János Szép Majid Movahedi Rad Daniel Gosztola

Publication Name: Advances in Transdisciplinary Engineering

Publication Date: 2024-01-01

Volume: 59

Issue: Unknown

Page Range: 143-150

Description:

This article presents experimental tests and numerical modeling of steelcomposite connections. The study considers the interaction and friction coefficient between the steel structure and concrete, as well as between the steel studs and concrete. The numerical model underwent validation through an iterative process, considering various friction coefficients. The friction coefficient between the structure and the concrete exerted the most significant impact on the load capacity. a new finite element model has been developed, with various friction coefficients between steel structure and concrete, and in this model, the concrete was also subjected to different vertical compression loads. A total of 25 numerical tests have been conducted, using various configurations of vertical load and friction coefficient parameters. It was observed that higher friction coefficients increase the impact of vertical forces on the horizontal load capacity. The friction coefficient can be increased through technological interventions, such as surface roughening techniques or the introduction of intermediate materials designed to elevate it.

Open Access: Yes

DOI: 10.3233/ATDE240538

High prevalence of burnout among midwives in Hungary: High job demands and low resources as potential persistent stressors, a focus on prevention

Mihály Dió Ibolya Lipienné Krémer József Vitrai Szilvia Ádám Zsuzsanna Soósné Kiss

Publication Name: Heliyon

Publication Date: 2024-01-30

Volume: 10

Issue: 2

Page Range: Unknown

Description:

Background: Midwifery practice in Hungary is characterized by chronic stress, which may in turn lead to burnout and impaired perinatal care. However, little is known about the degree and potential stressors of burnout, which hinder the development of strategies to promote well-being among midwives in Hungary. Aim: To assess the prevalence of burnout and identify persistent individual and occupational stressors among midwives in Hungary over the past decade to inform prevention. Methods: We conducted two cross-sectional studies among midwives in 2014 and 2022. We used the Maslach Burnout Inventory to assess burnout (emotional exhaustion, depersonalization, and personal accomplishment) over time. We also collected data on individual and work characteristics. We performed a multivariate regression analysis to explore associations between burnout and respondents' characteristics. Findings: The degree and prevalence of emotional exhaustion among midwives increased significantly between 2014 (N = 224) and 2022 (N = 152). High workload, not feeling valued at work, poorly perceived health status and work dissatisfaction emerged as a significant positive correlate of emotional exhaustion or depersonalization in both studies. Living alone showed both a positive and inverse association with burnout in 2014 and 2022, respectively. Work satisfaction was a positive correlate of personal accomplishment in both studies. Conclusions: Our results add to and confirm the growing body of evidence about the high prevalence of burnout among midwives in Hungary. We identified potential risk factors and outcomes of burnout, which remained unchanged over time. To prevent or reduce burnout among midwives, future interventions should focus on addressing these potential persistent risk factors. However, the time-varying role of factors influencing burnout makes it advisable to review preventive interventions from time to time.

Open Access: Yes

DOI: 10.1016/j.heliyon.2024.e24495

Forensic DNA elimination databases in Europe: A comparative analysis of data from seven countries

Mónika Nogel Gabor Kovacs Zsolt Pádár

Publication Name: Forensic Science International Synergy

Publication Date: 2025-12-01

Volume: 11

Issue: Unknown

Page Range: Unknown

Description:

Forensic DNA elimination databases are valuable tools for identifying potential contamination risks during forensic investigations. This study provides a comparative analysis of the design, implementation, and effectiveness of forensic DNA elimination databases across seven European countries: Sweden, Germany, Czechia, Poland, the Netherlands, the UK, and Finland. Data were collected through structured inquiries sent to ENFSI member states’ forensic DNA laboratories, focusing on key aspects such as legal frameworks, database sizes, and contamination cases identified through the elimination database. The results reveal significant differences in the establishment and management of these databases, reflecting diverse legal and operational contexts. The findings underscore the need to ensure that all European countries implement their elimination databases to standardize forensic procedures and improve the reliability of DNA evidence. Furthermore, the study highlights the importance of introducing harmonized frameworks for forensic DNA elimination databases to enhance transparency, accessibility, and efficiency in forensic DNA practices across Europe.

Open Access: Yes

DOI: 10.1016/j.fsisyn.2025.100617