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Publications - 6674

Performance comparison of polymer and fiber modified asphalt mixtures

Richard Nagy Mohammad Fahad

Publication Name: Discover Applied Sciences

Publication Date: 2025-06-01

Volume: 7

Issue: 6

Page Range: Unknown

Description:

The performance of SBS-modified asphalt mixtures can be enhanced by incorporating various types of fibers offering a cost-effective alternative to increasing the SBS content. In this study, three different fibers, Basalt, Polyester, and Lignin fibers were added to a 3% SBS-modified bitumen binder, and their performance was compared to a 7% SBS mixture without fibers. Laboratory tests, including indirect tensile strength and dynamic shear rheometer tests, were used to evaluate the mixtures. The indirect tensile strength of all samples was assessed at loading rates ranging from 10 to 70 MPa/s, while stiffness moduli were tested at frequencies of 5 Hz, 3.5 Hz, 1.9 Hz, and 1.2 Hz. Finite element simulations using the Burger’s Logit model have been performed and microstrain analysis has been carried out to assess rutting and fatigue damage, complementing the experimental results. The findings demonstrated that fiber-modified mixtures exhibited superior performance, with increased tensile strength and complex shear modulus. Among the fiber types, Basalt fiber showed the best results, outperforming the others, while Polyester and Lignin fibers displayed nearly identical performance. The Basalt fiber mixture outperformed the SBS-7% mixture by 25% in rutting resistance and 28% in fatigue damage.

Open Access: Yes

DOI: 10.1007/s42452-025-07134-7

Dem-driven investigation and AutoML-Enhanced prediction of Macroscopic behavior in cementitious composites with Variable frictional parameters

R. M. Movahedi Vahid Shafaie

Publication Name: Materials and Design

Publication Date: 2025-06-01

Volume: 254

Issue: Unknown

Page Range: Unknown

Description:

This study presents a numerical investigation and predictive modeling framework to evaluate the influence of microscale frictional parameters on the mechanical behavior and failure mechanisms of cementitious composites. In the first phase, discrete element modeling (DEM) was employed to analyze the effects of bonded friction angle and non-bonded friction coefficient on the stress–strain response, failure evolution, and macro-scale properties. The results revealed a distinct transition from tensile to shear-dominated failure modes beyond a critical friction angle, accompanied by notable changes in compressive strength and deformation characteristics. Additionally, the role of non-bonded friction coefficient in post-failure behavior was identified, emphasizing its influence on load-redistribution. In the second phase, an AutoML-driven artificial neural network (ANN) was optimized via grid search, selecting an optimal four-layer model to predict macroparameters from microscale DEM inputs. The proposed ANN demonstrated high predictive accuracy, effectively capturing nonlinear dependencies while significantly reducing the need for additional numerical simulations. This integration of DEM and AI-based predictive modeling provides a computationally efficient, scalable solution for material characterization, enabling faster, data-driven insights into cementitious composite behavior without reliance on extensive simulation campaigns.

Open Access: Yes

DOI: 10.1016/j.matdes.2025.114069

Key Performance Indicators for Evaluating Electric Buses in Public Transport Operations

Agoston Winkler Balázs Horváth Xiao Li

Publication Name: Vehicles

Publication Date: 2025-06-01

Volume: 7

Issue: 2

Page Range: Unknown

Description:

The evaluation of electric buses used in public transportation operations encompasses several critical factors that directly influence the operational efficiency, as well as the economic viability, environmental advantages, and user experience. Energy consumption is a critical metric for assessing the energy efficiency of electric buses. It facilitates a better understanding of vehicle performance across varying road conditions and advances the implementation of energy-saving solutions. The passenger demand model is a tool used to assess the quality and experience of electric buses, with the assessment being based on real usage. The operational mileage is defined as the driving distance of electric buses on a single charge. This parameter has a significant impact on both urban coverage and route optimization. The article under consideration identifies evaluation indicators for electric buses. These indicators are derived from a set of 100 questionnaire responses, which were collected in Győr, Hungary. The classification of the indicators into three segments—mechanical, operational and bus transportation system—is proposed, with the underlying rationale and significance of each indicator’s selection being elucidated. The findings indicate that this component is essential for developing a comprehensive evaluation system for electric buses and serves as a solid foundation for more intricate future studies.

Open Access: Yes

DOI: 10.3390/vehicles7020058

Conservative Method for the Calculation of Thermal Forces in Reinforced Concrete Tunnel Wall During Fire

Éva Lublóy Zoltán Major János Szép

Publication Name: Advances in Transdisciplinary Engineering

Publication Date: 2024-01-01

Volume: 59

Issue: Unknown

Page Range: 455-463

Description:

This article builds on the author's existing knowledge of the heating of reinforced concrete tunnel linings and deals with the structural analysis of tunnel linings under fire exposure. Due to space constraints, the issue of designing for earth pressure and surface loads is not address. Since the analysis of thermal stresses due to restrained deformations is insufficient in the available literature, we complement the existing theoretical knowledge with the knowledge provided by the relevant standards for reinforced concrete tunnel linings. In addition, we add our own individual reflections to the theory where we have identified gaps. In determining the additional stresses due to inhibited thermal expansion, we use a numerical model based on our own ideas. The reason for this is that the heating of reinforced concrete tunnel lining during fire is extremely uneven and it is almost impossible to take this into account in the finite element programs commonly used. The other important reason is that this uneven temperature change that causes the colder zones of the wall to inhibit deformation. Thus, a solution implemented in MS Excel environment is presented, which allows an approximate accurate determination of the force effects due to inhibited deformation. The solution used and the values proposed are based on the authors' individual ideas and are not the result of an accepted professional consensus. In all cases where more precise data are required, it is recommended that a more accurate test be carried out. Advanced finite element modelling can provide the necessary support for designers and experts.

Open Access: Yes

DOI: 10.3233/ATDE240579

In the name of the people? The populist style of judicial reasoning and justificatory formalism

Mátyás Bencze

Publication Name: Hungarian Journal of Legal Studies

Publication Date: 2025-06-01

Volume: 66

Issue: 2

Page Range: 217-231

Description:

The populist political strategy has become a worldwide phenomenon among those in the executive and legislative branches of government. It is therefore justified to scrutinize whether populism influences the third branch of power, and if so, how. In the first instance, this research project will explore the characteristics of populist judicial reasoning in order to identify populist judgements. The results can be used to determine the extent to which populist judicial practice is widespread in a given legal system.First, I distinguish between three types of populist judicial behaviour. Judicial populism can manifest in the content of the decision (‘decisional’), in the court's communication (‘rhetorical’), or in both (‘full-fledged’). I then present the patterns of reasoning that can indicate populist judicial behaviour in each manifestation of judicial populism. Finally, I will address the question of how a variant of judicial formalism, which I term ‘justificatory formalism’, contributes to the spread of ‘decisional’ judicial populism.

Open Access: Yes

DOI: 10.1556/2052.2025.00635

Road Safety and Sustainability: A Comparison of Country Rankings

Csaba Koren Ziyad N. Aldoski

Publication Name: Chemical Engineering Transactions

Publication Date: 2023-01-01

Volume: 107

Issue: Unknown

Page Range: 277-282

Description:

Road traffic deaths are a crucial problem in the world. At the same time, sustainability is a global issue. Numerous publications are dealing with road safety and sustainability separately as a basis for country rankings, but if you are searching for “road safety and sustainability”, no relevant results are found. The research question of this paper is: How is the safety performance of countries with good sustainability ranks? Vice versa: are countries with lower sustainability ranks more dangerous in traffic? To answer these questions, international sustainability and safety ranking scales were compared using Spearman correlation coefficients. The key finding of the paper is that there is a strong correlation between sustainability and the safety ranking of countries. However, there are some exceptions, countries with significantly different sustainability and safety performances.

Open Access: Yes

DOI: 10.3303/CET23107047

Nascent entrepreneurship at Hungarian universities: Experiences of the Hungarian Startup University Program

Novotny Ádám Szabolcs Ramhap Tibor Dőry Makai Attila Lajos Bavlsík Richard

Publication Name: Statisztikai Szemle

Publication Date: 2024-01-01

Volume: 102

Issue: 3

Page Range: 231-260

Description:

The creation and growth of new innovative small firms brings significant socio-economic benefits. Developing the entrepreneurial competencies of university students is an effective way to motivate entrepreneurship. In this study, we investigate the characteristics of 187 university start-up project teams, involving 880 students, founded in the Hungarian Startup University Program (HSUP) at 27 Hungarian universities as well as the potential impact of the program. Based on a quantitative content analysis of progress reports prepared by nascent entrepreneurial student teams, we draw conclusions about the competencies and composition of teams, and the market and technological development of the innovative projects they work on. The analysis reveals several useful implications for educators and policy makers regarding the management and development of HSUP and other similar entrepreneurship education initiatives.

Open Access: Yes

DOI: 10.20311/stat2024.03.hu0231

INNOVATIVE ANALYSIS METHODS OF ENERGY PERFORMANCE OF BUILDINGS

T. Horváth Kitti Ajtayné Károlyfi Dániel Hegedűs Árpád Hajdu Olivér Tóth Dóra Szalai

Publication Name: Iet Conference Proceedings

Publication Date: 2024-01-01

Volume: 2024

Issue: 8

Page Range: 53-57

Description:

In the current era of architecture, sustainability and energy efficiency are becoming increasingly important, while at the same time, advanced technological tools and analytical methods are reshaping the design and construction of buildings. Architects must think responsibly and globally, as buildings account for a significant proportion of the world's energy use. As architects, we have a responsibility to create ecologically optimal facilities for the long term. With this in mind, we would like to present applications that trace the chronological milestones in the development of energy analysis. This paper provides a detailed overview of the different methods of energy analysis. The methods include software developed specifically for energy analysis, an analysis add-on built into modeling software, and among the more innovative technologies, we have also examined parametric design and methodologies based on artificial intelligence algorithms. We have tried to select these methodologies and software in a diversified way to get a more comprehensive picture of how they work. The main aim of this paper is to compare the conclusions drawn from case studies of our previous energy research and from the studies of these energy software, partly subjectively and partly with an objective perspective that tightens subjectivity. As such, a set of criteria we have defined will guide the structure of this analysis. In this article, we will try to highlight the advantages and disadvantages of each method, and we will also try to consider the importance of 3D model-based analysis.

Open Access: Yes

DOI: 10.1049/icp.2024.2681

One health agriculture: Heat stress mitigation dilemma in agriculture

Edit Mikó George Wanjala Ingrid Melinda Gyalai Kovács Flórián Violetta Tóth Gizem Yüksel Wissem Baccouri Vineet Srivastava Gideon Adu Donyina Dávid Köteles

Publication Name: One Health

Publication Date: 2025-06-01

Volume: 20

Issue: Unknown

Page Range: Unknown

Description:

The concept of One Health was developed as a successful strategy for addressing global crises that impact the health of animals, humans, and plants. The agriculture industry is facing a huge dilemma due to climate change and the impacts of heat stress, which might pose a threat to mankind in the future. In order to enhance the management of heat stress in the agriculture sector (Agri-heat stress), we suggest implementing the One Health approach. This is because the existing methods employed to alleviate heat stress in both livestock and crop farming may have side-effects on the well-being of animals, plants, humans, and the ecosystem. This review article examines the “dilemma” of mitigating heat stress in animal and crop husbandry. It discusses the One Health approach to heat stress, including a recommended strategy for reducing Agri-heat stress using the One Health approach. The study also highlights the benefits of adopting the One Health approach in mitigating Agri-heat stress. In our opinion, the efficacy of the One Health Approach in reducing Agri-heat stress depends on the process of conceptualization. This process includes recognizing the issue or hypothesis, as well as incorporating cooperating teams in the creation of environmentally friendly approaches. The efficacy and challenges of implementing this notion arise from the precise coordination of resources and collaborators.

Open Access: Yes

DOI: 10.1016/j.onehlt.2025.100966