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Found 6374 publications

SUSTAINABLE APPROACH OF CORPORATE EMBEDDEDNESS: GOOD PRACTICES OF SMALL AND MEDIUM-SIZED FAMILY COMPANIES

Lívia Ablonczy-Mihályka Zsuzsanna Pálffy

Publication Name: Journal of Community Positive Practices

Publication Date: 2024-01-01

Volume: 24

Issue: 2

Page Range: 115-135

Description:

Academic literature explores the term sustainability embeddedness as the highest degree of integration of sustainability into corporate strategies, however, its interpretation lacks the conceptual meaning applied in regional economics. While the focus of sustainability practices is often local, companies embed in the local space, conversely, increasing local embeddedness and commitment are leading companies to move from compliance-based sustainability practices towards sustainability embeddedness. The results based on interviews with small- and medium sized family businesses in Győr-Moson-Sopron County, Hungary illustrate that sustainable embedding as suggested as a new approach of the study are applied by this group of companies, the study concludes with a collection of good practices

Open Access: Yes

DOI: 10.35782/JCPP.2024.2.06

Speeding up the performance analysis of communication systems

No authors available

Publication Name: 2005 European Simulation and Modelling Conference, ESM 2005 - Proceedings

Publication Date: 2005-01-01

Volume:

Issue:

Page Range: 329-333

Description:

The methods for the performance analysis of communication networks are reviewed. Different ways are shown how the combination of DES and TFA can be made faster by using parallelism. An efficient algorithm for the parallel execution of the combined DES and TFA is presented.

Open Access: No

DOI: DOI not available

Frequency- and Temperature-Dependent Uncertainties in Hysteresis Measurements of a 3D-Printed FeSi wt6.5% Material

Tamas Orosz B. Kocsis

Publication Name: Sensors

Publication Date: 2024-05-01

Volume: 24

Issue: 9

Page Range: Unknown

Description:

Additive manufacturing of soft magnetic materials is a promising technology for creating topologically optimized electrical machines. High-performance electrical machines can be made from high-silicon-content FeSi alloys. Fe-6.5wt%Si material has exceptional magnetic properties; however, manufacturing this steel with the classical cold rolling methodology is not possible due to the brittleness of this material. Laser powder bed fusion technology (L-PBF) offers a solution to this problem. Finding the optimal printing parameters is a challenging task. Nevertheless, it is crucial to resolve the brittleness of the created materials so they can be used in commercial applications. The temperature dependence of magnetic hysteresis properties of Fe-6.5wt%Si materials is presented in this paper. The magnetic hysteresis properties were examined from 20 °C to 120 °C. The hysteresis measurements were made by a precision current generator–based hysteresis measurement tool, which uses fast Fourier transformation–based filtering techniques to increase the accuracy of the measurements. The details of the applied scalar hysteresis sensor and the measurement uncertainties were discussed first in the paper; then, three characteristic points of the static hysteresis curve of the ten L-PBF-manufactured identical toroidal cores were investigated and compared at different temperatures. These measurements show that, despite the volumetric ratio of the porosities being below 0.5%, the mean crack length in the samples is not significant for the examined samples. These small defects can cause a significant 5% decrement in some characteristic values of the examined hysteresis curve.

Open Access: Yes

DOI: 10.3390/s24092738

Central and Eastern European Examples of University. Institutional Aspects of Understanding Sustainability

Márta Konczos Szombathelyi István András Gáborné Nagy

Publication Name: Chemical Engineering Transactions

Publication Date: 2023-01-01

Volume: 107

Issue: Unknown

Page Range: 187-192

Description:

The scope of this paper is the interpretation of sustainability through the university as a traditionally recognized, value-based institution of knowledge, based on the example of Central and Eastern Europe, Hungary. Its aim is to interpret sustainability from different aspects, using the example of Central and Eastern Europe, including Hungary. For this purpose, the paper reviews the development policy directions of the past period and institutional realizations through public databases. The results of the research show that there are different dynamics and focus in terms of resources and development implementations. From the point of view of sustainability, it represents that the use of resources with different dynamics and focus is a challenge for the institutions.

Open Access: Yes

DOI: 10.3303/CET23107032

Improved Method for Predicting the Performance of the Physical Links in Telecommunications Access Networks

Ferenc Lilik Laszlo T. Koczy Szilvia Nagy

Publication Name: Complexity

Publication Date: 2018-01-01

Volume: 2018

Issue: Unknown

Page Range: Unknown

Description:

A novel approach is presented which is able to predict the available maximal data transfer rate of SHDSL connections from measured frequency dependent electrical parameters of wire pairs. Predictions are made by a fuzzy inference system. The basis of the operable and tested method will be introduced, then an improved version is shown, in which the problems derived from sampling of continuous functions of electrical parameters are eliminated by wavelet transformation. Also possibilities for simplification of the problem and a way of reducing the dimensions of the applied rule bases are presented. As the set of the measured data leads to sparse rule bases, handling of sparseness is unavoidable. Two different ways - fuzzy interpolation and various membership functions - will be introduced. The presented methods were tested by measurements in real telecommunications access networks.

Open Access: Yes

DOI: 10.1155/2018/3685927

Guest editorial: Uncertainty modelling and intelligent information processing

Laszlo T. Koczy Kok Wai Wong

Publication Name: Memetic Computing

Publication Date: 2010-12-01

Volume: 2

Issue: 4

Page Range: 247-248

Description:

No description provided

Open Access: Yes

DOI: 10.1007/s12293-010-0052-5

Evaluation of Human Behaviour at Pedestrian Crossings

Petra Szakonyi Emese Makó

Publication Name: Transportation Research Procedia

Publication Date: 2016-01-01

Volume: 14

Issue: Unknown

Page Range: 2121-2128

Description:

Road traffic crashes result from a combination of factors related to the road layout, the vehicles, the road users and the way they interact. First the main causes of pedestrian fatalities and the safety effects of road measures (traffic lights, roundabouts and refuge islands) at pedestrian crossings before and after implementation were investigated. The results indicate that there is a strong evidence for the positive effect of these measures especially on the number of the pedestrian related accidents. In the next phase a site survey was conducted in order to estimate the irregular crossing manoeuvres of car drivers and pedestrians at designated pedestrian crossings. Having analysed the irregular movements according to the type of crossing it was found, that car drivers behave the most irregularly at crossings without a refuge island. Crossings equipped with flashing yellow lights, refuge islands and traffic lights require a much more appropriate behaviour from car drivers. In the next phase of the research the waiting time of pedestrians and the delay of vehicle drivers again at pedestrian crossings were surveyed. Our results suggest that there is a need for a strong contribution of the human and the engineering fields to obtain an even more positive change in the safety of vulnerable road users.

Open Access: Yes

DOI: 10.1016/j.trpro.2016.05.227

Improved behavioral analysis of fuzzy cognitive map models

Miklós F. Hatwágner Gyula Vastag Laszlo T. Koczy Vesa A. Niskanen

Publication Name: Lecture Notes in Computer Science Including Subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics

Publication Date: 2018-01-01

Volume: 10842 LNAI

Issue: Unknown

Page Range: 630-641

Description:

Fuzzy Cognitive Maps (FCMs) are widely applied for describing the major components of complex systems and their interconnections. The popularity of FCMs is mostly based on their simple system representation, easy model creation and usage, and its decision support capabilities. The preferable way of model construction is based on historical, measured data of the investigated system and a suitable learning technique. Such data are not always available, however. In these cases experts have to define the strength and direction of causal connections among the components of the system, and their decisions are unavoidably affected by more or less subjective elements. Unfortunately, even a small change in the estimated strength may lead to significantly different simulation outcome, which could pose significant decision risks. Therefore, the preliminary exploration of model ‘sensitivity’ to subtle weight modifications is very important to decision makers. This way their attention can be attracted to possible problems. This paper deals with the advanced version of a behavioral analysis. Based on the experiences of the authors, their method is further improved to generate more life-like, slightly modified model versions based on the original one suggested by experts. The details of the method is described, its application and the results are presented by an example of a banking application. The combination of Pareto-fronts and Bacterial Evolutionary Algorithm is a novelty of the approach.

Open Access: Yes

DOI: 10.1007/978-3-319-91262-2_55

Information society, business intelligence

Galli Richárd

Publication Name: Informacios Tarsadalom

Publication Date: 2012-12-01

Volume: Unknown

Issue: 2

Page Range: 68-76

Description:

The article shows that business intelligence cannot only provide a ground for business decisions, but also answers workforce questions. This is why the article revolves around two - connecting - topics: the first is the management of corporate human resources - the definition of who is the most capable of filling which positions and how to keep her/him there - the second part is about hierarchical questions, such as the creation of the business intelligence competency center.

Open Access: Yes

DOI: DOI not available