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Publications - 6374

Biomechanical Analysis of Gymnastics Movements Using Wearable Motion Capture Systems and Linear Sensors: A Case Study of the Kipping Bar Muscle-Up

Yaodong Gu Gusztáv Fekete Qichang Mei Zixiang Gao Yining Xu Zhenghui Lu Wei Liu Xin Li

Publication Name: Advances in Transdisciplinary Engineering

Publication Date: 2024-01-01

Volume: 59

Issue: Unknown

Page Range: 523-529

Description:

Gymnastics moves are complex and varied, needing precise technique and body coordination, which traditional biomechanics methods struggle to capture in detail. This study aims to look at and judge how well new motion capture and analysis technology works in gymnastics biomechanics. This study picks the kipping bar muscle up move and uses the IMU-based Xsens system and the GymAware RS unit power test system to finely look at how athletes do the move in terms of body position, power, work done by the body, and main upper limb joint movements. The study tested 8 male elite collegiate gymnasts, collecting movement data with Xsens and power data with GymAware RS unit. Results show the kipping bar muscle up takes 1.42 seconds, with a 1.13-meter shift of the body's center and a peak speed of 3.40m/s. In terms of power, the peak output was 2772.96J/s, showing the need for explosive power and fast strength. Also, the total work done was 889.70J, showing the move's efficiency and energy level. This study shows that new motion capture and analysis tech is effective in capturing complex gymnastics moves. The use of these techs not only expands the ways biomechanics can be studied but also helps in making training better and improving how efficiently moves are done.

Open Access: Yes

DOI: 10.3233/ATDE240589

Testing and Modeling Procedure of the 18650 Lithium Battery at Different Temperatures

Adrienn Dineva I. Lakatos Szabolcs Kocsis Szurke

Publication Name: 2022 22nd International Symposium on Electrical Apparatus and Technologies Siela 2022 Proceedings

Publication Date: 2022-01-01

Volume: Unknown

Issue: Unknown

Page Range: Unknown

Description:

In this paper a two-time constant (TTC) electrical model is investigated to simulate the operation of 18650 batteries at different temperatures. To determine the parameters of the model, a new test procedure is developed, which can be used to obtain a wide range of information on the behavior of the tested batteries after 10 measurements. After performing the tests, detailed information on the constant, transient, and dynamic behavior of the battery over a wide temperature range is available. After, a statistics-based Ordered Weighted Averaging (OWA) aggregation operator is applied to evaluate the results. The general model is developed based on standardized parameters. Worldwide Harmonized Light Vehicle Test Procedure (WLTP) tests are performed to validate the simulation results. The operation of the model has been tested at 4 different temperatures: -15 °C, 0 °C, 25 °C, 60 °C. The simulation results are compared and evaluated with real measurement data.

Open Access: Yes

DOI: 10.1109/SIELA54794.2022.9845767

Sensemaking support system (S3) for manufacturing process improvement

Thomas B. Ladinig Krishna S. Dhir Gyula Vastag

Publication Name: International Journal of Production Research

Publication Date: 2021-01-01

Volume: 59

Issue: 8

Page Range: 2406-2425

Description:

Production management teams often face unfamiliar situations where each team member must understand new phenomena individually before the team can make mutually understandable and acceptable decisions. Contradicting subjective judgments can distort the group’s decision-making process because team members understand situations differently and are generally prone to behavioural biases. This paper presents the development of a sensemaking support system (S3,S cube) for selecting improvement projects in a complex,small-volume batch production system of a premium car manufacturer. All phases of the sensemaking process are facilitated by making various sources of information available to a team of managers and experts to reduce conflicts regarding the selection of improvement projects. S3 is based on a lens model which combines judgments of the management team with discrete event simulation and provides visual representations of the differences and misjudgements related to various improvement options. The results–that can easily be generalised to many similar settings–indicate different understanding and lack of coherence within the management team which prevents them from defining mutually acceptable actions. This is countered with the creation of an action proposal,summarising and visualising causal relationships,and connecting them to improvement options to improve performance of the production system.

Open Access: Yes

DOI: 10.1080/00207543.2020.1733700

Sustainability framework of recycled aggregate concrete produced with supplementary cementitious materials

T. Horváth David Bozsaky Mohammed Abed M. Shmlls

Publication Name: Ain Shams Engineering Journal

Publication Date: 2023-08-01

Volume: 14

Issue: 8

Page Range: Unknown

Description:

Engineering products’ sustainability has changed from being a choice to a crucial requirement. In this study, the impact of employing 20 % fly ash (FA) and/or 12 % silica fume (SF) as cement substitutes in the production of recycled aggregate concrete is examined. The examination was conducted in two stages, evaluation stage and analysis stage. In the evaluation stage, the mechanical characteristics, environmental impact, and production costs of ten concrete mixtures were assessed with laboratory experiments and data collection. While in the analysis stage, three multi-criteria decision-making techniques (namely: EDAS, VIKOR, and TOPSIS) were utilized to optimize the most valuable and sustainable concrete mixture. The key results displayed that utilizing up to 70 % of recycled concrete aggregate with an optimal dosage of a combination of 20 % FA and 12 % SF provides high-quality, environmentally friendly, and costly effective concrete.

Open Access: Yes

DOI: 10.1016/j.asej.2022.102036

Social problem-solving, coping strategies and communication among 5th and 7th graders

László Kasik Edit Tóth Anett Balogh-Pécsi

Publication Name: International Journal of Adolescence and Youth

Publication Date: 2024-01-01

Volume: 29

Issue: 1

Page Range: Unknown

Description:

The aim of the study is to explore the characteristics of social problem-solving, coping strategies and assertive communication among 5th- and 7th-grade students (N = 378). Communication is assessed with the Assertiveness Questionnaire (AQ, Gaumer Erickson et al., 2016), social problem-solving with the Social Problem-Solving Inventory–Revised (SPSI–R, D’Zurilla et al., 2002) and coping strategies with the Ways of Coping Questionnaire (WCQ, Lazarus & Folkman, 1988). The results show that mostly significant differences can be found between pre-adolescents and early adolescents in the three social fields. Low belief in problem-solving is more common among older students, and–besides the age difference–there are a number of areas where boys and girls differ, even among younger students. The SEM clearly identifies strong links between communication, coping strategies and problem solving. The results provide a more nuanced picture of boys’ social problem-solving, coping strategies and communication and the relation between them than before.

Open Access: Yes

DOI: 10.1080/02673843.2024.2331592

Impact of financial technologies on economic development: Theories, methods and analysis

Laszlo Vasa Anel A. Kireyeva Zaira T. Satpayeva Anna Kredina

Publication Name: Journal of International Studies

Publication Date: 2021-01-01

Volume: 14

Issue: 4

Page Range: 286-303

Description:

This research focuses on an analytical review of the scientific literature to select appropriate methods and evaluate the impact of financial technologies on economic growth. Since non-cash payments can be affected by various factors, there is a great variety of studies relating to them in the scientific literature. However, existing scientific papers reflecting on the economic growth and non-cash payments do not determine the cause-effect relationship trends in different periods. Current study intends to fill this gap. Using an original method based on correlation analysis, the relationship of indicators in different periods is calculated with the use of the SPSS software. The data is collected for period of 2004-2019, during which the reviewed countries were actively developing and increasing their financial and technological capacities. Analysis results largely indicate an increase in the number of bank branches in many of the reviewed countries. Further, we consider the correlation between economic growth (expressed by indicators such as GDP), financial technologies (number of ATMs, user access to internet, and number of users of mobile communications) and gender indicators. The conclusions show a correlation between economic growth and financial technologies.

Open Access: Yes

DOI: 10.14254/2071-8330.2021/14-4/19

Virtual influencer-brand collaborations: a multiple-case study of strategic design and the credibility-engagement paradox

Veronika Keller Donia Khalfallah

Publication Name: Cogent Business and Management

Publication Date: 2026-01-01

Volume: 13

Issue: 1

Page Range: Unknown

Description:

Virtual influencers (VIs) are increasingly integrated into brand communication strategies, offering novel opportunities for audience engagement, message control, and digital differentiation. This study examines brand-virtual influencer collaborations through a multiple-case study approach, analyzing five diverse cases: Lil Miquela, Imma, Noonoouri, Lu do Magalu, and Knox Frost. The analysis focuses on brand motivations for engaging with virtual influencers, strategic design and implementation choices in VI collaborations, and their effects on consumer trust, brand perception, and engagement. Findings indicate that brands are primarily motivated by novelty, differentiation, and the ability to achieve risk-controllable visibility, while effective collaboration strategies depend on aligning virtual influencer characteristics such as form realism, ownership structure, and endorsement format with product category and communication objectives. Cross-case synthesis reveals what we conceptualize as the Credibility-Engagement Paradox: an analytical framework whereby novelty, originality, and visual distinctiveness enhance engagement and opinion leadership, while simultaneously constraining perceived credibility and trust relative to human influencers. This study advances influencer marketing theory by conceptualizing the Credibility-Engagement Paradox as an analytical framework derived from cross-case evidence, demonstrating how novelty-driven engagement and credibility formation operate as partially independent mechanisms shaped by anthropomorphism, ownership structure, and contextual accountability, while also offering actionable guidance for brands deploying virtual influencers in digital marketing ecosystems.

Open Access: Yes

DOI: 10.1080/23311975.2026.2653916

Modified bacterial memetic algorithm used for fuzzy rule base extraction

János Botzheim László Gál Laszlo T. Koczy

Publication Name: 5th International Conference on Soft Computing as Transdisciplinary Science and Technology Cstst 08 Proceedings

Publication Date: 2008-12-01

Volume: Unknown

Issue: Unknown

Page Range: 425-431

Description:

In this paper we discuss an improved version of the Bacterial Memetic Algorithm (BMA) used for fuzzy rule base extraction. In previous works we have found several ways to improve the original BMA. Some of them perform well rather in the case of more complex fuzzy rule base, and some of them perform well rather in the case of less complex fuzzy rule base. We have combined the improvements into a new version of the BMA that performs well in each case investigated. Copyright 2008 ACM.

Open Access: Yes

DOI: 10.1145/1456223.1456310

ANALYSIS OF THE CHARACTERISTICS OF THE FACTORS INFLUENCING THE UNEMPLOYMENT RATE: A COMPARISON OF THREE ASEAN COUNTRIES

Laszlo Vasa P. Karácsony Nguyen Thi Khanh Huyen

Publication Name: Transformations in Business and Economics

Publication Date: 2024-01-01

Volume: 23

Issue: 3

Page Range: 345-361

Description:

Socio-economic issues, including inflation, business volatility, overcrowding, poverty, begging, and falling living conditions, are getting worse and worse every day in the modern day. Unemployment is one of the most hazardous and debilitating issues for any economy among such unfathomable issues. Unemployment is a term often used in macroeconomics to refer to the state of people of working age who have full working capacity and need to find a job but do not yet have one. The unemployment rate is an indicator that affects the economic development of a country, and governments often have to have the most effective unemployment rate management policies. The study focuses on inflation factors, including wages, economic growth, and education. Each country has different effects of the above factors on the unemployment rate. This study shows different conclusions across countries. For the overall population, through the analysis of a sample of all three countries, wage and education have a negative impact on the unemployment rate. This is essentially consistent with many other studies where an increase in wages leads to more workers entering the labour force. The studied countries are all major economies in Asia. For a country with a high growth rate like Vietnam, drivers such as increasing wages or boosting education clearly increase job opportunities and simultaneously reduce unemployment.

Open Access: Yes

DOI: DOI not available