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Found 6407 publications

Determination of Measurement Parameters for Vibration Analysis by Bus

Péter Szalai Péter Horváth F. Hajdu Rajmund Kuti M. Brinissat Antal Apagyi Cs Papp

Publication Name: Strojnicky Casopis Journal of Mechanical Engineering

Publication Date: 2022-11-01

Volume: 72

Issue: 2

Page Range: 189-200

Description:

From the point of view of field examinations, especially in the case of measurements done by instruments, it is crucially important to determine measurement conditions. Accurate identification of parameters enables accurate and certified measurement results to be achieved. In our work, we represent the determination of measurement conditions for harmful vibrations occurring during urban road transport of an Ikarus 55 type long-haul bus. This is a favourable basis for further vibration analysis regarding other buses.

Open Access: Yes

DOI: 10.2478/scjme-2022-0028

Serratia fajok jellemzése, valamint Serratia marcescens kvalitatív kimutatása nyers és pasztőrözött tejből polimeráz láncreakción alapuló vizsgálati módszerrel

E. Korcz Z. Kerényi László Varga

Publication Name: Elelmiszervizsgalati Kozlemenyek

Publication Date: 2021-01-01

Volume: 67

Issue: 2

Page Range: 3441-3452

Description:

No description provided

Open Access: Yes

DOI: 10.52091/EVIK-2021/2-4-HUN

Measuring and simulating magnetic characteristics using Epstein frame

Miklós Kuczmann Zoltan Nemeth

Publication Name: Pollack Periodica

Publication Date: 2018-08-01

Volume: 13

Issue: 2

Page Range: 15-26

Description:

The paper discusses the standard of the Epstein frame that has been used to measure magnetic characteristics of the core made of material M250-35A supplied by different frequencies between 1-400 Hz. The measuring program has been built in LabVIEW including a control, filter and data save section as well. COMSOL Multiphysics 4.3b has been chosen as simulation environment, in which the Jiles-Atherton hysteresis model has been implemented.

Open Access: Yes

DOI: 10.1556/606.2018.13.2.2

Particle Number Concentration and SEM-EDX Analyses of an Auxiliary Heating Device in Operation with Different Fossil and Renewable Fuel

Ibolya Zsoldos György Szabados Péter Nagy I. Szabó

Publication Name: Inventions

Publication Date: 2024-02-01

Volume: 9

Issue: 1

Page Range: Unknown

Description:

Pollution from road vehicles enters the air environment from many sources. One such source could be if the vehicle is equipped with an auxiliary heater. They can be classified according to whether they work with diesel or gasoline and whether they heat water or air. The subject of our research series is an additional heating system that heats the air, the original fuel is gasoline. This device has been built up in a modern engine test bench, where the environmental parameters can be controlled. The length of the test cycle was chosen to be 30 min. The tested fuels were E10, E30, E100 and B7. A 30-min operating period has been chosen in the NORMAL operating mode of the device as a test cycle. The focus of the tests was particle number concentration and soot composition. The results of the particle number concentration showed that renewable fuel content significantly reduces the number concentration of the emitted particles (9.56 × 108 #/cycle for E10 vs. 1.65 × 108 #/cycle for E100), while B7 causes a significantly higher number of emissions than E10 (3.92 × 1010 #/cycle for B7). Based on the elemental analysis, most deposits are elemental carbon, but non-organic compounds are also present. Carbon (92.18 m/m% for E10), oxygen (6.34 m/m% for E10), fluorine (0.64 m/m% for E10), and zinc (0.56 m/m% for E10) have been found in the largest quantity of deposits taken form the combustion chamber.

Open Access: Yes

DOI: 10.3390/inventions9010013

Green City Development in a Mid-Sized Hungarian City: A Case Study of Komárom’s Environmental Initiatives

Márta Konczos Szombathelyi Dóra Csöppüs

Publication Name: Journal of Sustainability Research

Publication Date: 2026-01-01

Volume: 8

Issue: 1

Page Range: Unknown

Description:

Background: This study aims to summarize and analyze the possibilities, findings, and results related to the concept of green cities as an environmentally friendly and sustainable model of urban development. A key aspect of this is the integration of innovative, environmentally friendly solutions into a city’s development. Methods: The study integrates a systematic literature review, synthesizing prior research on the topic, with a detailed examination of a Hungarian city as a case study. This approach provides evidence of how an innovative environmental program and climate strategy can enhance a city’s green spaces, boost its competitiveness, and strengthen its image. Results: The study’s insights, derived from a systematic literature review synthesizing global green city research, can serve as a good example to effectively assist the implementation of future green projects in both domestic and international cities. Compilation of key indicators as a model from both the literature and case study, includes the development of green networks, recreational spaces, and an improved city image through community engagement. Conclusions: By examining the multifaceted impact of various green city functions and solutions on sustainability, the analysis offers a comprehensive understanding of how and to what extent green city concepts contribute to shaping the city’s image. Furthermore, the case study helps to recognize that smaller settlements are also capable of implementing effective, green strategies that contribute to the development of their image. A future research direction could be to assess whether cities have strategic planning documents that specifically promote green cities and solutions, and if so, for what time frame they are designed. Such research would allow us to categorize cities based on their green city strategies.

Open Access: Yes

DOI: 10.20900/jsr20260018

The effects of the differences between the austrian and the hungarian regulation of the rights of citizenship in a commune (Heimatrecht, indigénat, pertinenza, illetőség) on the nationality of the successor states of the Austro-Hungarian Monarchy

Mónika Ganczer

Publication Name: Journal on European History of Law

Publication Date: 2017-01-01

Volume: 8

Issue: 2

Page Range: 100-107

Description:

The rights of citizenship in a commune were characteristically used in Central Europe as a basis of the regulation of nationality of persons affected by state succession, and the peace treaties concluded after the First World War by the successor states of the Austro-Hungarian Monarchy notably included this criterion. Although the rights of citizenship in a commune seemed more serviceable criterion during at the peace conference than habitual residence in these states, the different domestic regulations concerning Austrian and Hungarian territories and their interpretations by other states caused numerous problems and resulted in statelessness en masse. The aim of the present paper is to analyse the features and the differences of acquisition and loss of Austrian and Hungarian rights of citizenship in a commune, and to reveal their practical and interpterational problems. This study identifies the problems related to the nationality of persons affected by state succession after the First World War. These problems may also serve as an important lesson for the present, as the criteria that define persons concerned by the change of nationality in modern cases of state succession need to be selected carefully.

Open Access: Yes

DOI: DOI not available

Dynamic Vehicle Dashboard Design for Reduced Driver Distraction

Viktor Nagy Ágoston Pál Sándor

Publication Name: Mechanisms and Machine Science

Publication Date: 2025-01-01

Volume: 174 MMS

Issue: Unknown

Page Range: 645-654

Description:

In the context of contemporary vehicle dashboard systems, advanced In-Vehicle Information Systems (IVIS) often employ touchscreen functionalities, and multi-layered menu structures. However, these solutions have been identified as more distracting for drivers compared to traditional tactile switches and buttons with single, dedicated functions. Our primary focus is on exploring the design capabilities of dynamic vehicle center console interfaces, leading to the inception of the Dynamic Human-Computer Interface System (DHCIS). DHCIS employs a context-aware, adaptive functional framework structure, which, rather than relying on deep menu layers, enhances the safety level in varied traffic situations by simplifying controls to one-touch features. The design concept has been compared with a generic user interface in terms of the handling method, operational steps and layout design.

Open Access: Yes

DOI: 10.1007/978-3-031-80512-7_63

Fuzzy rule based systems as tools towards solving the "key problem of engineering"

Laszlo T. Koczy

Publication Name: Studies in Fuzziness and Soft Computing

Publication Date: 2013-01-01

Volume: 298

Issue: Unknown

Page Range: 311-323

Description:

No description provided

Open Access: Yes

DOI: 10.1007/978-3-642-35641-4_46

Factors of Responsible Entrepreneurial Behaviour: Empirical Findings from Hungary

Áron Szennay Judit Csákné Filep Melinda Krankovits

Publication Name: Chemical Engineering Transactions

Publication Date: 2023-01-01

Volume: 107

Issue: Unknown

Page Range: 25-30

Description:

Sustainability is a contemporary global challenge that could be resolved only with the active and effective contribution of businesses. Thus, this paper aims to shed light on factors influencing entrepreneurs’ responsible behaviour. The analysis is based on the Hungarian merged dataset of the Global Entrepreneurship Monitor (GEM) Adult Population Survey (APS) 2021 and 2022 (n=697). The results are based on statistical analyses, namely non-parametric correlation analyses and factor analysis. The findings show that variables concerning entrepreneurs’ responsible attitudes and behaviours significantly correlate with each other – except for two variables concerning directly with the SDGs, namely SDG awareness and considering SDG in KPIs. Using the five correlated variables, two factors can be created, where variables concerning intentions decouple from those concerning taking any steps towards minimising environmental or maximising social impacts. These results implicate that although entrepreneurs tend to consider environmental and/or societal aspects of their business decisions, they come short of taking steps towards them. Thus, responsible actions should be incentivised with education or targeted aids.

Open Access: Yes

DOI: 10.3303/CET23107005