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Found 6334 publications

Assessing Local Site-Specific Response Spectra Based on Site Data in Gyor

O. Kegyes-Brassai Benjamin Labar

Publication Name: Advances in Transdisciplinary Engineering

Publication Date: 2024-01-01

Volume: 59

Issue: Unknown

Page Range: 422-430

Description:

It is essential to understand seismic ground motion in order to understand how dynamically a structure responds to earthquakes. Due to variations in seismic loading, strong ground vibrations can damage structures to varying degrees. The different essential traits of powerful ground motions help explain this ground diversity during moderate to large earthquakes. This study mainly focuses on the comparison between ground motion parameters such as the Peak Ground acceleration (PGA), and local site spectra considering the design response spectrum and site-specific response spectra of varying soil profiles in Gyor. Multichannel analysis of Surface Waves (MASW) data from eleven different places in Gyor were considered and analyzed using the 1-dimensional response analysis software, STRATA, and a detailed comparison was carried out between the different site locations in terms of PGA, and local site spectra. The result revealed the sites with the highest amplifications based on peak ground values of acceleration, velocity, and displacements. With 1-dimensional STRATA software, peak ground acceleration profiles, and response spectrum results are obtained and compared to Eurocode 8 standards.

Open Access: Yes

DOI: 10.3233/ATDE240575

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

Review of multihazards research with the basis of soil erosion

Hamid Reza Pourghasemi Vipin Kumar Imlirenla Jamir Narges Kariminejad Vahid Shafaie Mostafa Biglarfadafan

Publication Name: Advanced Tools for Studying Soil Erosion Processes Erosion Modelling Soil Redistribution Rates Advanced Analysis and Artificial Intelligence

Publication Date: 2024-01-01

Volume: Unknown

Issue: Unknown

Page Range: 295-306

Description:

Soil erosion is a primary geomorphic process that may result in hazards and significant socioeconomic losses. These processes occur mainly through the surface and subsurface flows. We conducted a systematic literature review on the quantitative attribution analysis of soil erosion, presenting state-of-the-art erosion processes and demonstrating the relative importance of soil erosion as a natural hazard responsible for land degradation and desertification. This explains why a multidisciplinary approach is needed to understand how erosion occurs and what factors are involved. This justifies the multihazard analysis and the need to model the erosion processes. Knowledge of the quantitative elements of soil erosion measurement combined with the consideration of multiple risk assessments can help develop conceptual models of slope hydrology and soil erosion that can help decision-makers determine an appropriate early warning system design policy. Filling these gaps will guide us to increase our knowledge of surface and subsurface erosion, thereby helping us to better explore the changing landscape for improvement and develop strategies and effective soil erosion control techniques. However, more research is required to better explore the morphology and connectivity of soil erosion, their subsurface watershed, and behavior, as well as several challenges, opportunities, and strategies facing the analysis of soil erosion.

Open Access: Yes

DOI: 10.1016/B978-0-443-22262-7.00014-X

Naija, the missing spectacle: guidebooks on Nigeria in the neoliberal era

Adam Mayer

Publication Name: African Identities

Publication Date: 2024-01-01

Volume: 22

Issue: 1

Page Range: 213-228

Description:

Nigeria, long a quintessential terrain for the expatriate gaze more than the tourist gaze, has now very nearly disappeared as a topic from standard Western issued guidebooks. The gap in publications was very noticeable by the second decade of the 21st century, but it came as a culmination of the country’s diminishing role in those for the last four neoliberal decades. The country has apparently lost its identifiable role as spectacle in global capitalism in the Debordian sense. At the same time, space opened up for radical Western guidebooks and in the last decade, radical homegrown guides that reflect and celebrate the African gaze on Africa, with a new and unashamedly local frame of reference and context. Not surprisingly, this overlaps meaningfully with socialist and feminist political commitment in most relevant literature. This article deals with the projected image of Nigeria in guidebooks foreign, as well as domestic.

Open Access: Yes

DOI: 10.1080/14725843.2021.2008303

Application Analysis of a Novel Reduction Method for Spurious Oscillations in 2D Impact Problems

Balázs Pere Daniel Serfozo

Publication Name: Advances in Transdisciplinary Engineering

Publication Date: 2024-01-01

Volume: 59

Issue: Unknown

Page Range: 231-239

Description:

The numerical solution of impact problems are oftentimes problematic due to the presence of spurious oscillations in the resulting functions. Eliminating these oscillations is complicated and requires a damping effect to be exerted in the solution. In the proposed method, viscous damping has been applied with a special damping character. Using this scheme, the numerical solution of 2D impact problems contains significantly less oscillations compared to other widely applied methods. In quantitative terms, an improvement of 2.42% and 9.29% or more can be achieved in the time evolution of the velocity and the pressure, respectively.

Open Access: Yes

DOI: 10.3233/ATDE240550

Comparative Study of Model Order Reduction Methods via Truss Vibrations

Péter Horváth

Publication Name: Advances in Transdisciplinary Engineering

Publication Date: 2024-01-01

Volume: 59

Issue: Unknown

Page Range: 209-216

Description:

The paper examines the accuracy of various model reduction techniques via modal analysis of a truss structure. Besides the widely used Craig-Bampton (CB) method in commercial software, three additional methods - modal truncation augmentation (MTA), system equivalent reduction expansion process (SEREP), and the Rubin method - are briefly introduced. Subsequently, the results provided by these methods are investigated through the comparison of natural frequencies, mode shapes, and frequency response functions. The study reveals that generally, the Rubin method provides the most accurate results, except in higher frequency ranges where its error suddenly spikes. With the MTA method, accuracy can be improved at low frequencies, but the error gradually increases. In the case of SEREP, the error remains approximately constant, resulting in larger errors at low frequencies and smaller errors at high frequencies compared to other methods.

Open Access: Yes

DOI: 10.3233/ATDE240547

Algorithms in judicial decision making - Why can (not) AI be used in judging?

Lea Pődör

Publication Name: Rechtskultur

Publication Date: 2024-01-01

Volume: Unknown

Issue: Unknown

Page Range: 499-513

Description:

This paper examines the integration of artificial intelligence (AI), particularly large language models (LLMs), into judicial decision-making. It highlights the linguistic complexity of adjudication, where judges must interpret ambiguous legal texts and resolve nuanced dilemmas. While LLMs show promise in supporting tasks like document analysis and precedent identification, their limitations in moral reasoning and context sensitivity are evident. Case studies of tools like LexisNexis, COMPAS, and Prometea demonstrate how AI can enhance efficiency but cannot replace human judges. As homo semioticus, judges are indispensable creators of meaning and interpreters of law. The paper concludes that AI’s role in the judiciary should focus on collaboration, ensuring technology supports rather than substitutes human decision-making.

Open Access: Yes

DOI: 10.36213/01-24

Measurement Setup Considerations for Investigating Health Effects of 5G Exposure

Oliver Takacs Gyorgy Wersenyi

Publication Name: 2024 IEEE International Conference on Microwaves Communications Antennas Biomedical Engineering and Electronic Systems Comcas 2024

Publication Date: 2024-01-01

Volume: Unknown

Issue: Unknown

Page Range: Unknown

Description:

The proliferation of 5G technology requires the installation of new radio frequency equipment (antennas, base stations) next to the existing 4G network elements. New frequency bands have been allocated and opened for 5G services in the lower and higher GHz bands. Due to the lack of reliable and conclusive experiments and the uncontrolled spread of false information via media and social networks on the internet, a never seen before resistance has arisen from the public. Although many papers have recently been published suggesting adverse health effects, most of them were inadequately designed, conducted, and evaluated in order to be conclusive. Nevertheless, there is a need for proper experiments. This paper highlights current results, emerging critics, and presents a recommendation for further investigation.

Open Access: Yes

DOI: 10.1109/COMCAS58210.2024.10666173

Selection of Engine Oils with Tribological Examinations Applicable to Specially Operated Diesel Engines

L. Földi Rajmund Kuti D. Tóth L. Csapó F. Könczöl Cs Papp

Publication Name: Fme Transactions

Publication Date: 2024-01-01

Volume: 52

Issue: 2

Page Range: 335-342

Description:

In recent times, many specially engineered diesel engines built in the 1980s are still used in different areas, for which the suggested engine oils are no longer available. These engines are operated reliably in military combat vehicles, electricity generators, and tracked machinery, thus it is essential to examine what engine oils are suitable for their operating conditions and may be used as their engine oil. The aim of our research is to conduct the tribological examination of an oil sample taken from a V-6M type naturally aspirated Diesel engine and the oil prescribed by the manufacturer. After evaluating the results, we determine which type of oil is applicable in the engine to achieve safe operation and a long lifetime.

Open Access: Yes

DOI: 10.5937/fme2402335K