Search in Publications

Found 6334 publications

Sustainable Solutions in Rehabilitation Engineering: Manufacturing of Outer Ear Replicas with Current 3D Technology

Gyorgy Wersenyi

Publication Name: Studies in Systems Decision and Control

Publication Date: 2024-01-01

Volume: 545

Issue: Unknown

Page Range: 323-331

Description:

A workflow pipeline has been constructed and tested for rapid prototyping of outer ear replicas, incorporating 3D scanning, image post-processing, and 3D printing using various synthetic materials. Handheld and volumetric scanners, open-source software solutions, and the availability of 3D printers make time- and cost-effective procedures already possible. The demonstrated solutions may extend or replace expensive tissue engineering methods; thus, they can contribute to new business models and sustainability in facial reconstruction surgery. This allows not only for aesthetic improvement of the patients but also for the restoration of acoustic properties of the outer ears.

Open Access: Yes

DOI: 10.1007/978-3-031-65203-5_29

Investigation of the relationship between cryptocurrency acceptance points and tourism in EU regions

Marcell Kupi

Publication Name: Journal of Infrastructure Policy and Development

Publication Date: 2024-01-01

Volume: 8

Issue: 8

Page Range: Unknown

Description:

This study examined the role of cryptocurrencies in tourism and their acceptance across EU regions, with particular attention to the digital transformation precipitated by the COVID-19 pandemic. The analysis focuses on the relationship between cryptocurrency acceptance points and the intensity of tourism, highlighting that the acceptance of cryptocurrencies is significantly correlated with tourism services. The literature review highlighted that Web 3.0, especially blockchain technology and decentralized applications, opens new possibilities in tourism, including secure and transparent transactions, and more personalized travel experiences. The research investigated cryptocurrency acceptance points and the intensity of tourism within the EU. The study illuminates that the acceptance of cryptocurrencies significantly correlates with tourism services. The data and methodology demonstrated the analysis methods for examining the relationship between cryptocurrency acceptance points and tourism intensity, including the use of clustering neural networks and Eurostat data utilization. The results showed a positive correlation between the number of cryptocurrency acceptance points and tourism intensity in the EU, affirming the research hypothesis. According to the regression analysis results, each additional cryptocurrency acceptance point is associated with an increase in tourism intensity. The significance of the research lies in highlighting the growing role of digital payment solutions, especially cryptocurrencies, in tourism, and their potential impacts on the EU economy. The analysis supports that the intertwining of tourism and digital financial technologies opens new opportunities in the sector for both providers and tourists.

Open Access: Yes

DOI: 10.24294/jipd.v8i8.4637

APPLICATION OF EMISSION FACTORS TO EXPLORE THE POTENTIAL OF HYDROGEN PRODUCTION FROM SEWAGE SLUDGE

Gergely Zoltán Macher Dóra Sipos Judit Pécsinger Dalma Bódizs Éva Veronika Pestiné Rácz

Publication Name: Iet Conference Proceedings

Publication Date: 2024-01-01

Volume: 2024

Issue: 8

Page Range: 16-24

Description:

The study aims to investigate the possibility of producing hydrogen from sewage sludge obtained during wastewater treatment, using emission factors. It provides an overview of current trends in treating sewage sludge, analyses the potential for generating biogas and hydrogen from sewage sludge, and examines the role of hydrogen in transitioning towards greener energy. The research methodology uses statistical approaches to derive potential values from baseline data through emission factors and categorizes study areas based on this information. The background indicates that biogas-based hydrogen production offers benefits such as utilizing renewable energy sources and reclaiming sewage sludge. There has been a substantial increase in municipal wastewater treatment sludge generation while simultaneously reducing non-hazardous sludge disposal by landfilling. The focus is on utilizing these resources effectively instead of squandering them, while also identifying previously wasted potential over recent years. The primary objective of the paper is to assess the untapped potential that has not been fully utilized in recent years. The research direction was shaped by access to statistical data, albeit constrained by its focus on a typical technological process. The study delves into an increasingly relevant area, with outcomes applicable for policymakers as well as professionals in energy and environmental fields.

Open Access: Yes

DOI: 10.1049/icp.2024.2675

SOCIAL INTEGRATION OF INTERNALLY DISPLACED PERSONS IN UKRAINE: PERCEPTIONS FROM IDPS VS. THE HOST POPULATION

Laszlo Vasa Halyna Mishchuk Natalia Samoliuk Vita Krol

Publication Name: Economics and Sociology

Publication Date: 2024-01-01

Volume: 17

Issue: 4

Page Range: 61-81

Description:

The social integration of internally displaced persons in Ukraine is analysed based on 5 dimensions of social integration: economic, political and religious, social, socio-psychological, and integration into cultural and sports life. The study was conducted using a nationally representative sociological survey of internally displaced persons (500 respondents) and the population of host communities (850 respondents). Differences in the perception of integration are investigated based on comparing the assessments of internally displaced persons and the population of the host communities. The highest integration is obtained in the socio-psychological, political and religious dimensions. The lowest level is in integration into community life. An important empirical result is the lower scores of the population compared to IDPs in almost all 21 criteria for integration. This is an indirect sign of significant social distance and lower readiness of the population of host communities, compared to IDPs themselves, to seek opportunities for interaction. The cluster analysis reveals the links between the most significant factors for successful integration: mutual respect between IDPs and local residents, tolerance, active engagement in local policy-making, and support for country defence. The most crucial obstacles to successful integration according to IDPs’ judgements are lower possibilities compared to the local population in participation in projects aimed at local communities’ development (65,3%), entrepreneurship development (60% of responses), and participation in decision-making regarding the community development (55,9%). The findings are important for developing policies to reduce the social exclusion of IDPs in areas where integration is below average.

Open Access: Yes

DOI: 10.14254/2071-789X.2024/17-4/4

Testing Embedded Software Functionality Of Safety Critical Brake-By-Wire Systems Based On Vector Toolchain

János Májer Szilard Stadinger Akos Krabacz Denes Fodor

Publication Name: Proceedings of the 2024 25th International Carpathian Control Conference Iccc 2024

Publication Date: 2024-01-01

Volume: Unknown

Issue: Unknown

Page Range: Unknown

Description:

Brake-by-wire is an innovative braking system that replaces the traditional hydraulic braking system with an electronic-hydraulic one. The brake-by-wire system is a safety-critical system that requires reliable and efficient communication between the electronic control units (ECUs) in the vehicle. Testing the communication network is critical to ensure the system's safety, reliability, and performance. Vector toolchain provides an efficient and reliable platform for testing the communication network of brake system ECUs. In this research, we present a testing methodology for ECUs in the Vector toolchain environment using Hardware-In-the-Loop (HIL) simulation. The proposed methodology includes the design of test scenarios, the implementation of the test cases, and the analysis of the test results. The results of the research show that the proposed methodology can effectively test the communication network of brake-by-wire ECUs in the Vector toolchain environment and provide insights into the network's performance and reliability.

Open Access: Yes

DOI: 10.1109/ICCC62069.2024.10569260

CSR and SMEs’ competitive advantages—Results from a Hungarian city of Győr based on managing directors’ personal perception

Adrienn Reisinger Norbert Kovács

Publication Name: Journal of Infrastructure Policy and Development

Publication Date: 2024-01-01

Volume: 8

Issue: 12

Page Range: Unknown

Description:

Today it is obvious that corporate social responsibility (CSR) is more than just a volunteer activity, it is also related to the operation of the firms and to competitive advantages. Many factors influence CSR and CSR-competitiveness relations; firm size could be the most crucial one. Originally CSR is related to large companies, although smaller firms can be active in CSR mainly in different ways with different background. Based on this idea the paper aims to explore the correlation between small and medium-sized enterprises’ (SMEs) corporate social responsibility (CSR) and competitive advantages. An interview research was conducted among thirty SMEs in a Hungarian city of Győr in 2021/22 to reveal how owner-managers interpret CSR, competitiveness and their relations. As SMEs cannot provide exact data on this topic the personal perception method was used to explore the CSR-competitiveness relation. A moderate relation was observed between CSR and competitiveness and the research revealed that different methodologies have to be applied for SMEs than large companies which results from the fact that SMEs’ CSR is less formal and lacks exact data.

Open Access: Yes

DOI: 10.24294/jipd.v8i12.8588

Same Goal, Different Paths – Sustainability in Hungarian Cultural Heritage Protection

Viktória Verebélyi

Publication Name: Rechtskultur

Publication Date: 2024-01-01

Volume: Unknown

Issue: Unknown

Page Range: 659-670

Description:

This study explores the requirement of sustainability in cultural heritage protection from the perspective of constitutionality. Following an indispensable overview of certain concepts relating to its subject it discusses the constitutional framework of legislation on cultural heritage protection. Through an analysis of the applicable legal regulations, it examines the way the Hungarian State can enforce the requirement of sustainability in the specific field of cultural heritage protection. This is, indeed a topical subject, particularly in view of the Act on the Sustainable Development of Certain Elements of Cultural Heritage (hereinafter: “Castles Act”) which was adopted by the Hungarian National Assembly on 12 December 2023, but was not promulgated pursuant to Decision 5/2024. (II. 6.) of Constitutional Court. Ensuring sustainability is, according to the explanatory memorandum attached to the Castles Act is one of the key aspect of the regulation, just like in the case of the act regulating the returning of cultural objects of disputed ownership, kept in public collections.

Open Access: Yes

DOI: 10.36213/01-25

Reliability-Based Optimization of Sinusoidal-Web Steel Beams: Integrating Experimental and Numerical Analyses for Enhanced Structural Performance

Gábor Csaba Soóki-Tóth Majid Movahedi Rad Muayad Habashneh Imre Cserpes Gábor Csaba Soóki-Tóth

Publication Name: Advances in Transdisciplinary Engineering

Publication Date: 2024-01-01

Volume: 59

Issue: Unknown

Page Range: 415-421

Description:

A new method for optimizing the design of nonlinear sinusoidal-web steel beams is introduced in this paper, focusing on reliability-based design principles. Utilizing a custom-written code with a reliability index as a key control factor, the study incorporates stochastic variables such as flange thickness, sinus wave width, sinusoidal-web plate thickness, and applied load magnitudes. Employing Finite Element Analysis (FEA) through ABAQUS software conducting experimental testing on sinusoidal HEA beams, this research showcases the successful application of reliability-based design in modifying beam design to meet the reliability requirements. The adoption of the suggested approach, which incorporates Monte Carlo simulation, is crucial in guiding the development of structural configurations that are robust to random nature in both load and manufacturing conditions. Results showcase improved structural integrity, and the successful convergence of optimized values, emphasizing the potential for enhanced steel structure design.

Open Access: Yes

DOI: 10.3233/ATDE240574

Analysis of Transient-Like Vertical acceleration Events on Semi-Trailer Truck to Simulate Package Testing

Péter Böröcz Renáta Pidl

Publication Name: Advances in Transdisciplinary Engineering

Publication Date: 2024-01-01

Volume: 59

Issue: Unknown

Page Range: 217-223

Description:

In road traffic, encountering significant bumps is common, especially at sunken railway crossings, tertiary roads, and poorly maintained access roads. Speed bumps, also known as "sleeping policemen," exacerbate the issue, requiring drivers to slow down abruptly. Depending on visibility and anticipation, vehicles approach these obstacles at various speeds, resulting in impact loads primarily in the vertical direction on the vehicle's load platform. Accelerations exceeding g-force levels can cause cargo to bounce, leading to potential damage and horizontal sliding, particularly problematic for semi-trailer trucks carrying high-value goods. This study focused on measuring and evaluating this effect using a specific speed bump model simulating a defined road defect on a particular vehicle. The highest vertical acceleration recorded was 2.4G at a speed of 10 km/h. At 5 km/h, the acceleration was 0.76G, while at 15 km/h, it reached 1.9G. These findings suggest that a speed around 10 km/h poses the most risk for such vehicles, with acceleration levels expected to decrease for both slower and faster speeds.

Open Access: Yes

DOI: 10.3233/ATDE240548