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Found 6327 publications

On the Selection the Rule Membership Functions and Fuzzy Rule Interpolation

Ferenc Lilik Brigita Sziová Szonja Krisztina Szujo Ĺaszĺo T. Ḱoczy Szilvia Nagy

Publication Name: Studies in Computational Intelligence

Publication Date: 2022-01-01

Volume: 959

Issue: Unknown

Page Range: 111-118

Description:

In many real physical systems based fuzzy inference systems the rulebase is sparse thus interpolation or the change of the shape of the rules become necessary if the rulebase parameters are selected according to physical parameters of the systems. Often measurements contain noise and outlines which can draw the statistics of the measured data. In the present article based on two independent examples, namely telecommunication line evaluation and colonoscopy image processing, we study the effect of the selection of the rulebase parameters on the effectiveness of stabilized fuzzy KH interpolation.

Open Access: Yes

DOI: 10.1007/978-3-030-74970-5_13

Recommendations on electromagnetic compatibility testing of unmanned aerial vehicles

Miklós Kuczmann Gergely Friedl Zsombor Petho Mate Liszi Gyorgy Wersenyi

Publication Name: 2022 IEEE 1st International Conference on Internet of Digital Reality Iod 2022

Publication Date: 2022-01-01

Volume: Unknown

Issue: Unknown

Page Range: 39-44

Description:

In this paper several recommendations and considerations on electromagnetic compatibility (EMC) testing of unmanned aerial vehicles (UAV, or drone) are presented. Currently, the standardization of drone EMC measurements is not yet fully established. These products are usually tested according to EN 55032, EN 55024, EN 64000-4-3 and EN 61000-4-8, while the scope of these standards is not UAV specific. The focus of this paper is on the testability of UAV emission and immunity from various aspects. The main goal of this paper is to initiate discussions regarding UAV specific conditions to describe measurement setups, conditions, and limitations suitable to drones. First, the UAV and the test environment shall be prepared from safety ant testability point of view. These aspects and recommended conditions - e.g., drone fastening, applying artificial load, and emulating the Earth's magnetic field - are explained in this paper. While the drones are assembled from CE certified components, the whole product requires a system level validation. The test conditions, limits, and stress levels shall be aligned to the specific environment an UAV might be exposed to. An initiative study aiming to describe the UAV exclusive electromagnetic conditions are also presented here. Additionally, several key aspects for EMC engineering of UAV's are also discussed in this paper, mainly focusing on functionality relevant EMC issues and solutions.

Open Access: Yes

DOI: 10.1109/IoD55468.2022.9987138

Interrelation between the climate-related sustainability and the financial reporting disclosures of the European automotive industry

Árpád Tóth Alex Suta Ferenc Szauter

Publication Name: Clean Technologies and Environmental Policy

Publication Date: 2022-01-01

Volume: 24

Issue: 1

Page Range: 437-445

Description:

The financial reports of the automotive companies' are measured in a standardized manner; therefore, they are transparent and comparable to each other, but this is not valid for the sustainability reports and it is not possible to compare their sustainability performances. Standard-setting organizations are currently searching for better reporting procedures. This study aims to investigate the connection between sustainability and financial reports for the most dominant European car manufacturers. It reviews the traceability of the sustainability elements back to the financial statements, which helps transparency, comparability, and impact measurement of the disclosed items and issues. This investigation allowed us to additionally review whether these companies are targeting to disclose the most harmful pollution impacts, or only focus to disclose the required obligatory items. Given the financial and sustainability reports magnitude manual testing would not provide complete and proper coverage, therefore we utilized an automated and AI-assisted content analysis with natural language processing. In this new review method, the sustainable elements of the textual reports were automatically retrieved following the 5-stage model of Landrum & Ohsowski (2018). The study highlights the lack of true sustainability information content of reports and the potential discrepancies and connections between the financial and the sustainability reports. Findings concluded that sustainability disclosures at the reviewed companies from several aspects could be improved and quantified, traced back to the financial disclosures, and to be comparable to each other if they apply a similar review method. Graphic abstract: [Figure not available: see fulltext.].

Open Access: Yes

DOI: 10.1007/s10098-021-02108-w

Investigation of deformations of a lithium polymer cell using the Digital Image Correlation Method (DICM)

Szabolcs Fischer Szabolcs Szalai Dóra Harangozó Szabolcs Szurke Kocsis

Publication Name: Reports in Mechanical Engineering

Publication Date: 2022-01-01

Volume: 3

Issue: 1

Page Range: 116-134

Description:

This research aims to investigate the adaptability of a measurement system or a process in determining the parameters of batteries. Methods are suggested for different applications, and properties gained by these measurements are specified. Deformations of lithium polymer batteries measured by various methodologies are also analyzed in detail. Changes in the geometry of worn-out batteries and the localization of the changes can be better understood by applying the results. The GOM ATOS and the GOM ARAMIS systems were applied to characterize lithium polymer batteries. Discontinuous tests were performed and the battery was discharged to 0 V and then fully charged for both methods. The advantages and disadvantages and the applicability of the two measurement systems were analyzed in this topic.

Open Access: Yes

DOI: 10.31181/rme20008022022s

Digital Competences of Teachers in the Digitalising Education Sector and in the Smart Learning Environment

Katalin Nagy Gyorgy Molnar

Publication Name: Sisy 2022 IEEE 20th Jubilee International Symposium on Intelligent Systems and Informatics Proceedings

Publication Date: 2022-01-01

Volume: Unknown

Issue: Unknown

Page Range: 325-330

Description:

In addition to the specific characteristics of the teaching-learning process, we have faced and continue to face a number of challenges and constraints in the digital era. A common set of challenges has been and will continue to be, at the end of 2021, the issue of digital competences, which is one of the main focal points (in addition to the provision of a modern high-capacity server backbone) of the new European Digital Agenda for Education (2021-27). The focus of our paper is therefore on the study of digital competences among teachers. In Hungary, the adapted frameworks based on the central EU Recommendation were published in 2019 and 2020, the first of which was the digital competence framework for teachers based on DigCompEdu. The digital skills and ICT attitudes of teachers play a key role in digital education. In this article, we present the results of a snow-ball sampling based pilot questionnaire administered to practising teachers in addition to a description and overview of the theoretical framework. Our research questionnaire consisted of 34 items, with N=112 respondents providing a scored response to our survey. The questionnaire survey consisted of a total of six sections, and we intend to use the responses and results obtained in our further research, seeking answers to the main research questions.

Open Access: Yes

DOI: 10.1109/SISY56759.2022.10036290

INTUITIVE DECISION: WHEN TO BEGIN THE SUCCESSION PROCESS

Katalin Darabos

Publication Name: Corvinus Journal of Sociology and Social Policy

Publication Date: 2022-01-01

Volume: 13

Issue: 2

Page Range: 79-105

Description:

The aim of the paper is to increase understanding of the succession decision-making process in family businesses. In understanding this phenomenon on the personal level of reality and understanding the decision-making process involved in succession, the decision-maker’s thought process and aspirations have to be taken into consideration. Based on a survey, a knowledge-based expert system tool (Doctus) was used to order successors’ intuitive knowledge and aspirations in order to deepen our understanding of the succession decision-making phenomenon. The diversity of the identified rules suggests that first generational change does not happen according to a single model but rather a variety of pathways are followed, depending on the context.

Open Access: Yes

DOI: 10.14267/CJSSP.2022.2.4

Analyzing the Performance of TSP Solver Methods

Peter Foldesi Boldizsar Tuu-Szabo Ĺaszĺo T. Ḱoczy

Publication Name: Studies in Computational Intelligence

Publication Date: 2022-01-01

Volume: 955

Issue: Unknown

Page Range: 65-71

Description:

In this paper we analyze the efficiency of three TSP solver methods: the best-performing exact Concorde algorithm, the state-of-the-art inexact Helsgaun’s Lin–Kernighan heuristic and our Discrete Bacterial Memetic Evolutionary Algorithm (DBMEA). In our analysis the run time predictability was also taken into account, not only the tour quality and the run time properties. Three models (polynomial, exponential, square-root exponential) were fitted to the mean run times of VLSI (Very-large-scale integration) instances up to 20,000 nodes. The DBMEA produces the highest (close to 1) R2-values for each model. The Concorde algorithm shows very low run time predictability.

Open Access: Yes

DOI: 10.1007/978-3-030-88817-6_8

Comparative Study of the Mechanical Behavior of Concrete Railway Sleeper Mix Design, using Waste Rubber and Glass Materials

Szabolcs Fischer Guoqing Jing Farshad Astaraki Mohammad Siahkouhi Majid Movahedi Rad Chunchao Li

Publication Name: Acta Polytechnica Hungarica

Publication Date: 2022-01-01

Volume: 19

Issue: 6

Page Range: 213-224

Description:

Waste rubber tires and glass powders, are hazardous materials for the environment. One of the methods to consume them, is their application in railway engineering projects. Rubber and glass materials, in this research, are provided from waste tires and glass bottles. Therefore, a modification is conducted to the concrete railway sleeper mix design, incorporated with waste rubber (R) and glass powder (GP). Three mechanical tests, including compressive, flexural and tensile splitting, have been studied on rubber and glass powder concrete specimens. Three different percentages of 5%, 10% and 15% by cement weight, for GP and by fine aggregate volume for R, are investigated herein. The results show that GP concrete has a better performance over the rubber concrete (RC), but lower than Ref. specimens. 5%GP as the best mix design, has compressive, flexural and tensile strengths of 45.4 MPa, 7.5 MPa and 5.82 MPa, respectively. Moreover, these strengths, for compressive and flexural, of 5%GP are about 24% and 6% lower than the Ref. strengths, respectively, while, tensile splitting strength is almost 14% higher than Ref. strength.

Open Access: Yes

DOI: DOI not available

Modular code generation for creating IoT applications

Gábor Paller Gabor Elo

Publication Name: International Conference on Electrical Computer Communications and Mechatronics Engineering Iceccme 2022

Publication Date: 2022-01-01

Volume: Unknown

Issue: Unknown

Page Range: Unknown

Description:

This paper builds on an earlier work that aims to generate code for connected digital systems (IoT, Internet of Things). Orcc-IoT was the adaptation of the Orcc dataflow design environment and code generator to the IoT problem area. IoT systems are characterized by heterogeneity of both the software and hardware environments therefore code generators targeting them must be able to handle embedded, client and server enviroments too. The first version of Orcc-IoT provided simplistic code generators. The extensions presented in this paper add embedded and server-side modules and more specialized wireless communication options to test Orcc-IoT's modular architecture.

Open Access: Yes

DOI: 10.1109/ICECCME55909.2022.9987980