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Sustainability and Energy Efficiency in Administrative Processes: A Control Theory Approach with P-graph Optimization

Boglárka Eisingerné Balassa László Buics Boglárka Eisinger

Publication Name: Chemical Engineering Transactions

Publication Date: 2025-01-01

Volume: 120

Issue: Unknown

Page Range: 415-420

Description:

As institutions seek to reduce their environmental impact, administrative processes must be optimized for energy and resource efficiency. This study integrates control theory with P-graph methodology to develop a structured framework for sustainable administrative workflows, focusing on university enrollment systems. P-graph-based optimization identifies minimum-energy pathways and optimal resource configurations, while Model Predictive Control (MPC) and nonlinear control enable real-time process adaptation under dynamic conditions. A Life Cycle Analysis (LCA) compares the carbon footprint of digital and paper-based workflows, evaluating IT infrastructure energy use versus traditional operations. Simulated control strategies support energy-efficient decision-making, highlighting best practices for emission reduction and operational flexibility. The result is a decision-support framework that embeds P-graph into a dynamic control context, guiding control strategy selection to minimize energy use and emissions. This scalable approach supports sustainability-oriented process management across public service domains.

Open Access: Yes

DOI: 10.3303/CET25120070

Decisions with general scope in the light of special sectoral regulations in the Hungarian administrative system

János Kálmán

Publication Name: Hungarian Journal of Legal Studies

Publication Date: 2024-03-21

Volume: 64

Issue: 2

Page Range: 220-235

Description:

In the 21st century, the two administrative instruments that have the greatest impact on the legal situation of members of society, administrative enforcement and administrative legislation, have been and are being confronted with a number of social challenges (global economic crisis, refugee crisis, epidemics and pandemics). The challenges of the 21st century require public intervention to provide a rapid, accurate and effective response to the problems that arise, while ensuring legality and the protection of the rights of the citizens. The first responses to social problems are provided by sectoral regulations, which may conflict with general rules of administrative procedure. The study analyses administrative decisions of general scope in the light of special sectoral regulation and review the points of conflict with general rules of administrative procedure. The study concludes with a proposal.

Open Access: Yes

DOI: 10.1556/2052.2023.00439

Sustainable travel to school programs in Hungary Role of Pedibus and Bicibus pilot programs today

Petra Kinga Kézai

Publication Name: Civil Szemle

Publication Date: 2024-03-21

Volume: 21

Issue: 1

Page Range: 71-88

Description:

In the context of modern urban development, various socio-technical innovations have proliferated in response to urban challenges, offering well-defined solutions. Since the 1970s, the so-called ‚backseat generation’, a group of children whose parents drive them to school every day, has emerged in developed countries, particularly in urban areas. This phenomenon has many negative effects on children, the environment and urban spaces. The present study addresses the issue of urban transport management, in particular the issue of daily school transport. It aims to present, based on literature analysis, good international examples, such as the pedibus and the bicycle bus, which emphasise local values and resources in the light of the ‚slow city’ concept. The study concludes with a presentation and evaluation of the pilot programmes (Pedibus in Gödöllő and Bicibus in Pécs) that have also become established in Hungary in recent years. These programmes offer a supervised, safe, group-based solution for school children and their families to go to school, and build community between different generations.

Open Access: Yes

DOI: 10.62560/csz.2024.01.05

Development of tire-road noise measuring system

Balázs Vehovszky István Horváth Zsolt Gaszner

Publication Name: Advances in Acoustics Noise and Vibration 2021 Proceedings of the 27th International Congress on Sound and Vibration Icsv 2021

Publication Date: 2021-01-01

Volume: Unknown

Issue: Unknown

Page Range: Unknown

Description:

In vehicles there are 3 main noise sources: powertrain noise (e.g. engine, gear engagement or exhaust noise), aerodynamic noise (or wind noise), and the noise from the tire-road contact. The first two are traditionally in the primary focus of vehicle manufacturers, however, due to both the already made powerful developments and the spreading of electric vehicles, the rolling noise is gaining more and more attention during the vehicle development process. There are two major influencing factors of this noise source: tire (geometrical and material) characteristics and road (surface) characteristics. The separation of their contribution is not straightforward, investigated rarely, and the requirements of homologation standards do not expect it neither. However, if one would like to meet the new vehicle pass-by noise regulations, it is more and more inevitable to have a sophisticated break-down of rolling noise. A straightforward solution is the usage of a one-wheel testbench developed directly for acoustical measurements. Such design process is presented in this paper, where the most important requirements are: enabling the users to compare tires from acoustical aspect under totally objective conditions, modelling the typical conditions of vehicles and ensuring data for rolling noise simulations. One further functionality of the testbench is to reproduce the real rolling noise by mounting realistic road surface sections onto the superficies.

Open Access: Yes

DOI: DOI not available

Evaluation Criteria and Their Impact on the Success of Humanitarian Projects

Laszlo Vasa Moaaz Kabil Md Billal Hossain Nassar Samia Zsuzsanna Toth Naarne

Publication Name: Journal of Human Earth and Future

Publication Date: 2025-06-01

Volume: 6

Issue: 2

Page Range: 276-292

Description:

Objectives: This study examines the impact of evaluation criteria—relevance, coherence, and effectiveness—on the success of humanitarian projects in the Gaza Strip, with efficiency as a mediating factor. It aims to provide a comprehensive understanding of how these criteria interact to enhance project outcomes in complex humanitarian settings. Methods/Analysis: The research employs Structural Equation Modelling (SEM) to analyze data collected from 350 respondents involved in humanitarian projects. The analysis assesses the direct and mediated effects of relevance, coherence, and effectiveness on project success, offering empirical insights into the role of efficiency in optimizing resource utilization. Findings: The results indicate that relevance, coherence, and effectiveness significantly influence project success, while efficiency strengthens these relationships by ensuring better resource allocation and implementation. The study highlights the importance of community engagement, alignment with local needs, and cultural sensitivity in achieving sustainable project outcomes. Novelty/Improvement: This research presents an integrated evaluation framework that enhances understanding of the interplay between key project assessment criteria and efficiency in humanitarian work. The findings provide actionable insights for organizations operating in complex environments like Gaza, helping refine project planning and execution strategies to improve sustainability and impact.

Open Access: Yes

DOI: 10.28991/HEF-2025-06-02-03

Discrete fourier transform and cepstrum analysis of vibration events on semi-trailer truck

Péter Böröcz Renáta Pidl

Publication Name: Fme Transactions

Publication Date: 2019-01-01

Volume: 47

Issue: 1

Page Range: 177-182

Description:

The aim of this paper is to present a novel techniqe to analyse the vibration signals during transportation in order to give new information to engineers to better understand these physical events. One of the primary sources of damages during transportation is the permanent vibration transmitted from the platform of semi-trailer to the cargo. The nature of this vibration depends on the road conditions and the features of the vehicle. In this study, a 2-axle-truck with a 3-axle-semi-trailer equipped with air spring suspension was observed to analyse the vibration circumstances. The affecting factors during the transportation were the type of the road (motorway, primary road, secondary road, tertiary road), and different vehicle speed levels. The vibration events were measured and registered on the platform of the trailer, then these values were evaluated in MATLAB environment. The presence of the harmonic vibrational components, the stationarity of the mode shapes, the characteristic frequency narrow-bands of the RMS and PSD values were primarily studied. The applied methods that were used are: discrete Fourier transformation, autocorrelation-, cross-correlation functions and cepstrum analysis.

Open Access: Yes

DOI: 10.5937/fmet1901177P

Peer education program to improve fluid consumption in primary schools—lessons learned from an innovative pilot study

Helga Judit Feith Johanna Takács J. Ágnes Lukács József Vitrai András Falus Zsuzsanna Soósné Kiss

Publication Name: Heliyon

Publication Date: 2024-03-15

Volume: 10

Issue: 5

Page Range: Unknown

Description:

Background: Although it is widely recognized that more attention needs to be paid to children's fluid intake, there is little information on how to improve it. Peer education has been suggested as an effective approach to changing health behaviors among school children. As a new approach, our study piloted a peer education program to improve children's fluid intake in primary schools. Methods: University students were prepared for their role as peer educators in an elective university course, including the concept of peer education and different pedagogical methods. The peer educators evaluated the training process by completing a questionnaire. The intervention took place during a School Health Day led by the peer educators. An anonymous survey with a questionnaire on knowledge of fluid intake was administered two weeks before, at the end of, and 15 weeks after the intervention. Changes in hydration knowledge were tested using repeated measures ANOVA. Results: The pilot program showed increased knowledge about fluid consumption (p < 0.001) in lower and upper primary school children (N = 326) at the end of the School Health Day compared to pre-intervention measures. A positive change was observed after 15 weeks only in upper primary students. Feedback from peer educators was useful for fine-tuning the program. Conclusions: This innovative program induced positive changes in knowledge about fluid intake in primary school children. The persistence of the changes differed between lower and upper primary school children. Based on the results, the intervention should be replicated to adapt the program to the needs of lower primary school children. Because the training of peer educators and the peer education program appeared to be successful, this program is worthy of international replication. This approach may also be suggested for other behavior change issues.

Open Access: Yes

DOI: 10.1016/j.heliyon.2024.e26769

Averaged vibration levels during courier parcel delivery service in small truck in Hungary

Péter Böröcz

Publication Name: Fme Transactions

Publication Date: 2018-01-01

Volume: 46

Issue: 2

Page Range: 211-217

Description:

In recent years there continues to be an increase in courier parcel delivery services due to the growing global online economy and express parcel shipments. It is therefore important to measure and quantify the levels of vibration that occur inside the vehicle during transport, as it can be one of the primary sources of damages. The purpose of this study was to measure the averaged vibration levels in vertical, lateral and longitudinal directions that occur in courier delivery shipments from pickup to delivery involving small trucks over ground road transportation in Hungary. The recorded acceleration data were analyzed in terms of power spectral densities (PSD) and presented with overall Grms. The results of the separated afnd averaged vibration levels provide physical circumstances for various road and load conditions showing those frequency bands that have significant intensities.

Open Access: Yes

DOI: 10.5937/fmet1802211B

Integral operators in relation to the HOSVD-based canonical form

András Rövid Peter Varlaki Lászlõ Szeidl

Publication Name: Asian Journal of Control

Publication Date: 2015-03-01

Volume: 17

Issue: 2

Page Range: 459-466

Description:

This paper describes the relation of the higher order singular value decomposition (HOSVD) based canonical form to the Hilbert-Schmidt type integral operators. This connection between the canonical form of f(x) and the integral operators determined by function f(x) is important; on the one hand it gives a new aspect for the consideration of LPV models, and on the other hand it allows for the approximation of eigenfunctions and integral operators based on a numerical reconstruction of the canonical form.

Open Access: Yes

DOI: 10.1002/asjc.1017