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Found 6327 publications

Simulation Model Based Response Management Related to Railway (Earthquake) Disaster

Daniel Rohacs Anita Boros Sergey Kinzhikeyev József Rohács

Publication Name: Periodica Polytechnica Civil Engineering

Publication Date: 2022-01-01

Volume: 66

Issue: 1

Page Range: 40-49

Description:

Railway system as part of the general transportation system is a strategic element that supports the economy and the society. Its role is continuously rising with rapid industrialization, urbanization, and changes in the society expectations regarding sustainable systems. New and emerging technologies call and permit the augmentation of the railway systems’ disaster management. This paper deals with the development of an improved response management concept related to railways’ damage, caused by earthquakes. The paper synthetizes the latest technologies, engineering, and management methods in one improved response management system. After the concept inspiration, the paper describes the applicable novel models and introduces an improved response management being developed for railway systems, damaged by earthquakes. The concept is verified in simulation. The novelty includes a new approach in the identification of the critical infrastructure, the risk assessment, the prediction of aftershocks and the recursive application of the adaptive Markov process to the simulation supporting the response management concept.

Open Access: Yes

DOI: 10.3311/PPci.17578

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

The design of digital motivational systems for online education platform as a functional pre-test for future m-learning application integration

Istvan Biro

Publication Name: 2022 1st IEEE International Conference on Cognitive Aspects of Virtual Reality Cvr 2022

Publication Date: 2022-01-01

Volume: Unknown

Issue: Unknown

Page Range: 73-78

Description:

Today, VR is used in more and more fields (education, production, healthcare, banking, etc.). In connection with the spread of 3D VR, the number of developments aimed at displaying features on mobile devices has increased. The m-learning methodology and application development presented in the article aim to demonstrate the potential of digital motivation systems to expand people's psychological, cognitive, and social skills by developing a system of habits related to digital learning and content consumption. The article thus relates well to the philosophy of cognitive aspects of virtual reality (cVR). The goal of this research was to create and test a new theoretical model of online habit forming motivation system with available 3rd party tools.

Open Access: Yes

DOI: 10.1109/CVR55417.2022.9967660

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

Modification of Concrete Railway Sleeper Mix Design, Using a Hybrid Application of Steel Fibers

Guoqing Jing Farshad Astaraki Mohammad Siahkouhi Majid Movahedi Rad Sashka Uuganbayar Jun Wang

Publication Name: Acta Polytechnica Hungarica

Publication Date: 2022-01-01

Volume: 19

Issue: 3

Page Range: 119-130

Description:

Concrete railway sleepers have been used for years without an update in production and design, to be compatible with demands for increasing train axle loads and speed. In the current research, concrete railway admixture is modified with consuming (0.5% straight-1.5% hooked), (1.5% straight-0.5% hooked) and (1% straight-1% hooked) steel fibers combinations. Three main mechanical experiments as compressive, flexural and splitting tensile strengths and fresh mortar “flowability” were performed. Results showed that the hybrid of 1% straight and 1% hooked steel fibers shows the optimal performance among other hybrid combinations. This hybrid admixture efficiently improves the compressive, flexural and splitting tensile strengths of the concrete railway sleeper mix design.

Open Access: Yes

DOI: DOI not available

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

Cultural Metaphors in Hungarian Folk Songs as Repositories of Folk Cultural Cognition

Judit Baranyiné Kóczy

Publication Name: Journal of Cognition and Culture

Publication Date: 2022-01-01

Volume: 22

Issue: 1-2

Page Range: 136-163

Description:

The paper explores the status of nature metaphors in Hungarian folk songs with respect to their representation and transmission of folk culture and worldview. Employing a Cultural Linguistic analysis, metaphors are observed from three perspectives: in relation to cultural schemas, generic-level conceptual metaphors, and experiential motivation. Nature metaphors are to a large extent framed by cultural experience regarding their experiential basis, conceptual structure and relation with other cultural conceptualizations.

Open Access: Yes

DOI: 10.1163/15685373-12340127

Heat radiation effects on insulating materials used in buildings

F. Hajdu Rajmund Kuti Gabriella Lászlo

Publication Name: Pollack Periodica

Publication Date: 2021-12-31

Volume: 16

Issue: 3

Page Range: 108-113

Description:

In recent years, in order to increase the energy efficiency of older buildings in Hungary, several tenders have supported the modernization of the thermal insulation. Various thermal insulation materials have been installed on walls, on slab and on floor. Unfortunately there are cases where thermal insulation materials are not installed in accordance with the construction permit or the manufacturer's instructions, which poses a serious danger in case of a fire. During the research the effects of heat on the behavior of Expanded PolyStyrene, a thermal insulation material often used in Hungary is examined. Laboratory tests and computer simulations were carried out, which are presented in detail in this paper. The aim of the research is to contribute to increase the fire safety of buildings.

Open Access: Yes

DOI: 10.1556/606.2021.00377

Effect of protein content on the thermal effusivity of foods

G. Szafner Nóra Gombköto Ottó Dóka

Publication Name: Acta Alimentaria

Publication Date: 2021-12-31

Volume: 50

Issue: 4

Page Range: 475-483

Description:

The availability of thermophysical properties of both foods and their constituents is of considerable importance to the industry. The thermal effusivity is one of the less explored thermophysical parameters. It governs the penetration of heat into materials and is defined as the square root of the product of thermal conductivity of the material, volume-specific heat capacity, and density. This paper describes the application of a relatively new inverse photopyroelectric method (IPPE) to determine thermal effusivity of dehydrated whey protein isolate and egg white powder versus protein content. In both cases the effusivity values decreased linearly with increasing protein content. One percent increase in protein content of whey protein isolate and egg white lead to 6.5 and 7.2 Ws1/2 m-2 K-1 decrease in effusivity values, respectively.

Open Access: Yes

DOI: 10.1556/066.2021.00042