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Publications - 6383

Content Credentials: Trust Issues, Technical Solutions and Future Perspectives Using Encrypted Metadata in Image Processing

Victor Koech Gyorgy Wersenyi

Publication Name: Infocommunications Journal

Publication Date: 2026-01-01

Volume: 18

Issue: 1

Page Range: 62-70

Description:

Emerging technologies offer validation and authentication solutions in the field of audiovisual content creation. Visible or invisible watermarking, embedded metadata, and digital signatures can be used to maintain the validity and creditability of still images and video data. The Coalition for Content Provenance and Authenticity (C2PA) was established to create an open source framework and to provide technical solutions for image capture, processing, delivery, and verification. The leading market players in hardware and software development set the goal of applying encrypted metadata information to guarantee the authenticity of the data. Currently, only a few devices and applications are available and have been implemented based on this technology. This paper gives an introductory overview of the recent state, highlighting advantages, drawbacks, available implementations, and future perspectives on research directions.

Open Access: Yes

DOI: 10.36244/ICJ.2026.1.7

Head Checks and the Useful Life of Rails

Zoltán Major Ferenc Horvát Róbert Horváth

Publication Name: Chemical Engineering Transactions

Publication Date: 2023-01-01

Volume: 107

Issue: Unknown

Page Range: 295-300

Description:

Transport systems, including railways, are an important part of everyday life in modern societies. Whether it is passenger or freight transport, railways are an environmentally friendly solution with their robust throughput capacity and modern electrified lines. The significant changes in transport needs over the last fifty years have partly modified its role, increasing both track speed and axle load. Head Checks (HC) appeared on the MÁV (Hungarian Railway Corporation) network in the early 2010s. This phenomenon had been an unknown problem in Hungary before. Several cases abroad (e.g., a train derailment at Hatfield station in 2000 with four fatalities) have highlighted the extreme danger of this phenomenon. Materials and railway track experts at Széchenyi University have been working on the subject of HC defects in rail heads for several years. The results of research work carried out for MÁV Zrt. form the base of this article. The novelty of this article is the complexity consideration. Not only the structural changes of the rail material were investigated, but also the time/traffic load-dependent crack evolution was mathematically described. Based on the strategy outlined in the report of the research work, MÁV has taken up the fight against HC cracks, which were initially proliferating. The modern laboratory test in this article is based on the tests of Csizmazia and Horvát (2014). The stresses causing damage were investigated previously by Horváth and Major (2023). The economic analysis is based on Róbert Horváth's own calculation results.

Open Access: Yes

DOI: 10.3303/CET23107050

The Key Role of 3D Printing Technologies in the Further Development of Electrical Machines

Loránd Szabó Denes Fodor

Publication Name: Machines

Publication Date: 2022-05-01

Volume: 10

Issue: 5

Page Range: Unknown

Description:

There is a strong general demand for the permanent improvement of electrical machines. Nowadays, these are at their near maximum potential, and even small further improvements can only be achieved with great effort and high cost. The single solution should be a paradigm shift in their development, by using radically new approaches to topology, materials, and fabrication. Therefore, the application of diverse 3D printing techniques for advanced fabrication in this field is inevitable. Therefore, these new approaches are receiving a great deal of attention among electrical machines designers. In the paper, the possible applications of these new fabrication technologies in the field of electrical machines are surveyed. The focus is set on emphasizing the advancement over the traditional manufacturing approaches.

Open Access: Yes

DOI: 10.3390/machines10050330

Strain Rate Dependence of PLC Effect in AlMg4.5 Alloys †

Dóra Harangozó Imre Czinege

Publication Name: Engineering Proceedings

Publication Date: 2025-01-01

Volume: 113

Issue: 1

Page Range: Unknown

Description:

Tensile tests of AlMg4.5 alloy were carried out at six strain rates to study the Portevin–Le Chatelier (PLC) effect. The measured engineering stress–time and engineering stress–engineering strain curves were evaluated by direct peak detection and reference function approximation. The waiting and decay times of the PLC effect, and the related stress jumps and drops, were determined. It was shown that, as a function of strain rate, the quotient of the decay and the waiting time forms a curve with a decreasing slope after an initial rapid rise; the same can be stated about the time derivative of the stress jumps. These relationships are suitable for identifying serrations that vary depending on the strain rate, in full harmony with the stress serration amplitudes observed in the tensile test diagrams.

Open Access: Yes

DOI: 10.3390/engproc2025113025

Determination of power and torque curves of electric driven vehicles based on diagnostic methods

I. Lakatos Dávid Czeglédi Dániel Pup

Publication Name: Proceedings of the ASME Design Engineering Technical Conference

Publication Date: 2015-01-01

Volume: 9

Issue: Unknown

Page Range: Unknown

Description:

The transmitted power of motors can be defined by test bench examinations, in which the motor needs to be dismounted. By applying diagnostic methods only minimal disassembly, or indeed none at all, is necessary. In this paper diagnostic methods are systematized by different studies. Moreover, a new diagnostic procedure (established by the authors) is also introduced, which can be carried out by a relatively cheap measuring system design. Power measurement on a roller test bench is a well-Tried technique for vehicle examination. Basically, the wheel parameters (tractive force, torque, power) are measured, but there are also procedures for motor power measurement. By applying the new procedure, the diagnostic method, (simple construction and test bench construction at a favourable price) torque and power characteristics of the mounted motor can be defined. The theoretical considerations of the new measuring technique and the implementation of the measuring system are introduced in this paper. Test bench for drive motor power and torque curve determination. In this study the diagnostical measuring systems and, for the first time, the measuring principle and technology of the new theorybased roller power test bench are presented. For its construction measurements have been carried out which make an important contribution to the research. The results of the research contribute to the development of diagnostics methods and to making them more wide-spread.

Open Access: Yes

DOI: 10.1115/DETC2015-46724

Characterization of the level sets for interactive additions

Lucian Coroianu Robert Fuller

Publication Name: Cinti 2016 17th IEEE International Symposium on Computational Intelligence and Informatics Proceedings

Publication Date: 2017-02-07

Volume: Unknown

Issue: Unknown

Page Range: 35-40

Description:

In this paper, on the set of unimodal fuzzy numbers, first we prove that under some minimal assumptions, it suffices to consider only those joint possibility distributions that satisfy that the left/right side of the fuzzy number generated by the interactive addition based on the given joint possibility distribution, is obtained by evaluating only the left/right side of the summands. Then, we will obtain a representation theorem for the level sets of this interactive addition in terms of the level sets of the summands. These results generalize corresponding results for the special case of triangular-norm-based additions.

Open Access: Yes

DOI: 10.1109/CINTI.2016.7846376

NEW OCCURRENCES OF TWO RARE UROPODINA (ACARI: MESOSTIGMATA) SPECIES FROM IRANIAN FRUIT PLANTATIONS

Sergey G. Ermilov Hadi Ostovan Jenő Kontschán Mehdi Gheibi Shahram Hesami Somayeh Memarzadeh

Publication Name: Acarina

Publication Date: 2024-01-01

Volume: 32

Issue: 2

Page Range: 175-178

Description:

Two rare Uropodina species are reported from Iran: Macrodinychus iranicus Babaeian and Khalili-Moghadam, 2021 from soil in an apricot plantation; Oplitis iranicus Kazemi and Kontschán, 2007 from soils in orange plantations.

Open Access: Yes

DOI: 10.21684/0132-8077-2024-32-2-175-178

Genetic Strategies for Improving Pig Robustness: Reducing Antibiotic Use Through Enhanced Resilience and Disease Resistance

László Búza László Gombos Ferenc Szabó László Varga

Publication Name: Animals

Publication Date: 2025-09-01

Volume: 15

Issue: 18

Page Range: Unknown

Description:

This review investigates genetic strategies aimed at improving robustness in pigs to enhance disease resistance and reduce reliance on antibiotics. Robustness refers to a pig’s ability to stay healthy and productive under stressful or challenging conditions. The review outlines current breeding practices focused on key traits such as maternal ability, growth, immune function, and survival, and highlights that these robustness-related traits show measurable heritability, making them suitable for genetic improvement. Special attention is given to resistance against porcine reproductive and respiratory syndrome (PRRS), a major disease in swine. We also evaluate breed-specific differences, environmental influences, and immune response profiles, emphasizing their impact on breeding outcomes. The development of robust pig lines emerges as a sustainable strategy to reduce antibiotic dependence and enhance herd health. A distinctive contribution of this work is the integration of genetic robustness and resilience strategies with antibiotic stewardship objectives. We link genomic selection, advanced phenotyping, and targeted management interventions within a One Health framework to outline actionable, system-level pathways for reducing antimicrobial inputs. To our knowledge, this combined genetic and public health perspective has not been comprehensively addressed previously.

Open Access: Yes

DOI: 10.3390/ani15182753

Concepts and Examples of Carbon-Free, Self-Sufficient Local Energy Systems

Balázs Vehovszky Zoltán Weltsch Ferenc Magyar Lóránt Kovács

Publication Name: Chemical Engineering Transactions

Publication Date: 2024-01-01

Volume: 114

Issue: Unknown

Page Range: 931-936

Description:

The necessity of the “green revolution” in the field of energetics is not a question anymore; however, switching the current fossil fuel-based energy ecosystem to a fully renewable-based one poses enormous challenges. The historical structure of the present, centralised energy production infrastructure, as well as the fundamentally different characteristics of the three main fields of usage (electricity generation, heating and transportation), are among the most substantial hindering factors. The future energy system has to be much more flexible in several respects, with a fundamental contribution of smaller, independent energy communities. The current study focuses on the realisation aspects of such a small-scale energy community (or micro/nano-grid), considering the suitable technological solutions as well as the cost concerns. A high number of pilot projects and case studies around the world prove that the technical feasibility of a local grid/energy community is no longer a question. The real challenge is to find the appropriate incentives and strategy to catalyse the required transition at the legislation, system operator and end-user level as well. The outcomes of the present work contribute to this goal by pointing out the application potentials of a modular, scalable microgrid system based on a currently running microgrid-realization project at the ZalaZONE proving ground.

Open Access: Yes

DOI: 10.3303/CET24114156