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Found 6289 publications

UNDERSTANDING AND ACCEPTANCE OF SYSTEMS ENGINEERING IN AUTOMOTIVE PRODUCT DEVELOPMENT

Dániel Feszty Tibor Dory Bálint Filep Tamás Kolossváry

Publication Name: Decision Making Applications in Management and Engineering

Publication Date: 2023-04-01

Volume: 6

Issue: 1

Page Range: 70-91

Description:

Systems Engineering (SE) is a new engineering method for many firms in Automotive Product Development that expectedly advances their development processes to meet their stakeholder needs more effectively. Literature suggest that understanding and acceptance are key factors in the implementation, however comprehensive modes for their increase are barely discussed. In this paper, we propose a Participatory Action Research based on multiple research elements to find an effective technique for gaining understanding and acceptance on SE in a validated model environment of automotive industry called Formula SAE. We present practical outcomes at each steps of the implementation process and analyze the effect of improvements in the context of strategy, structure processes.

Open Access: Yes

DOI: 10.31181/dmame04012023k

Parameter Sensitivity Analysis and Rotor Topology Optimisation of a Synchronous Reluctance Machine

Mihaly Katona Tamas Orosz

Publication Name: Lecture Notes in Networks and Systems

Publication Date: 2025-01-01

Volume: 1258 LNNS

Issue: Unknown

Page Range: 14-23

Description:

As environmental policies tighten and consumers demand sustainable products, transitioning from a linear to a circular economy is crucial. A promising approach to circular economy is remanufacturing end-of-life electric machines to meet original or new specifications. Designing a rotor for remanufacturing with a different topology to fulfil the new requirements is a complex, non-linear optimisation task. In this paper, a permanent magnet-based synchronous machine is transformed into a synchronous reluctance machine with a new rotor topology. In this research, the Taguchi method is used to estimate parameter sensitivity. For optimisation, the Non-dominated Sorting Genetic Algorithm II was selected. Multi-criteria decision-making methods also helped choosing the optimal designs for maximum torque and minimal torque ripple. The sensitivity analysis revealed that the cut-off barrier shape significantly affects the average torque. In contrast, the height of the inner flux barrier had the most negligible effect. Most parameters showed almost the same magnitudes to torque ripple except for the height of the flux barrier, which again was the least significant. TOPSIS and SPOTIS methods using statisticalvariance and entropy weights showed some disagreements, indicating the complexity of selecting the optimal design.

Open Access: Yes

DOI: 10.1007/978-3-031-81799-1_2

Synergies between Fuzzy Signatures and Hypergraphs

Csaba Hajdu Ahmet Mehmet Karadeniz László T. Kóczy

Publication Name: Proceedings of the International Symposium on Applied Machine Intelligence and Informatics Sami

Publication Date: 2025-01-01

Volume: Unknown

Issue: Unknown

Page Range: 495-500

Description:

Fuzzy signatures have demonstrated effectiveness in various knowledge-representation domains, including medical decision-making systems and complex decision-making tasks across numerous fields. Even though the advancements in the field of fuzzy signatures have been substantial, the complete potential for developing a comprehensive graph-theoretical description format for this domain still needs to be fully realized. This paper introduces a novel hypergraph-based method for modeling fuzzy signatures, which offers a structured approach to their representation but also showcases the potential synergy between fuzzy signatures and hypergraphs. The proposed method is designed to improve fuzzy information representation and streamline the aggregation-based decision-making process. Future research is anticipated to extend the applicability of this method to control systems and robotics. Furthermore, the hypergraph-based model opens new avenues for the algebraic analysis of fuzzy signatures through tensor-based representations.

Open Access: Yes

DOI: 10.1109/SAMI63904.2025.10883273

Mobile Robot Environment Representation Through Fuzzy Signatures-Integrated Quadtrees

Csaba Hajdu Ahmet Mehmet Karadeniz László T. Kóczy

Publication Name: Romanian Journal of Information Science and Technology

Publication Date: 2025-01-01

Volume: 28

Issue: 1

Page Range: 103-116

Description:

This paper presents an innovative environment representation technique for mobile robots, incorporating obstacle detection within their operational space. Leveraging the fuzzy signature method, this approach uses quadtrees for efficient data organization. A set of fuzzy rules evaluates feature points to ascertain the relevance of identified obstacles. These points and their fuzzy associations are systematically arranged using a quadtree structure. The environmental model is reconstructed by traversing this tree and applying the established fuzzy rules. This paper has achieved a high-resolution grid representation of 0.1m within a 20m×20m area. Notably, the inference operation completes in just 0.5 ms, underscoring the method’s efficiency. Additionally, the technique is optimized for low memory consumption, demonstrating effective resource management even on older PCs, such as an Intel Core Duo 2 with 16 GB RAM. This representation is designed to support advanced robotic functions, such as obstacle navigation in a distributed computing environment.

Open Access: Yes

DOI: 10.59277/ROMJIST.2025.1.09

UNDERSTANDING THE CONTRIBUTION OF TURKIC PETROGLYPHS TO CULTURAL TOURISM DEVELOPMENT IN CENTRAL ASIA: A SYSTEMATIC AND META-ANALYTIC PERSPECTIVE

Tamara Gajić Shakhislam Laiskhanov Duman Aliaskarov Kairat Zhoya Yerlan Issakov Zhulduz Nizamatdinova

Publication Name: Geojournal of Tourism and Geosites

Publication Date: 2025-01-01

Volume: 62

Issue: 4

Page Range: 2063-2075

Description:

The petroglyphs of Central Asia represent a distinctive form of symbolic and visual heritage that is gaining relevance in scholarly debates on cultural tourism, regional identity, and sustainable development. Although their archaeological importance has long been recognized, their integration into contemporary tourism planning remains conceptually fragmented and underexplored. This study provides a systematic and meta-analytic synthesis of scientific literature concerning petroglyphs in Kazakhstan, Uzbekistan, Kyrgyzstan, and Tajikistan. Through bibliometric analysis, it identifies dominant research themes, leading institutions, and international collaboration networks. The results confirm increasing interest in the educational, symbolic, and experiential tourism dimensions of petroglyphs. However, the review also highlights thematic and geographical imbalances, particularly the underrepresentation of certain regions and a scarcity of robust empirical studies. The meta-analytic component shows a moderate positive effect of petroglyph-based heritage on cultural tourism development. Kazakhstan emerges as the leading academic node in this domain. The study does not attempt to establish causality but seeks to clarify how petroglyphs have been conceptualized in scientific discourse over the past two decades. Bibliometric mapping shows strong correlations between publication volume and heritage-centered national strategies. Research also indicates that digital tools, such as 3D modeling and GIS, are increasingly employed to preserve and interpret petroglyph sites. Despite these innovations, community-based approaches remain limited, signaling the need for greater local engagement. By linking rock art research with tourism studies, digital humanities, and heritage policy, this article outlines potential directions for more inclusive, interdisciplinary, and empirically grounded future research. Ultimately, the findings support the notion that petroglyphs are not only remnants of the past, but dynamic resources for interpreting identity, enhancing tourism sustainability, and fostering cultural continuity within the evolving framework of regional development in Central Asia. These insights may guide policymakers, researchers, and cultural institutions in shaping integrative strategies. Further efforts should aim to connect heritage preservation with inclusive tourism, education, and long-term regional resilience. Strengthening regional cooperation and cross-border heritage initiatives may also amplify the role of petroglyphs in sustainable cultural development.

Open Access: Yes

DOI: 10.30892/gtg.62406-1572

Superstitious Behaviors in Sports and Exercise: A Systematic Literature Review Update

Ricardo de la Vega Roberto Ruíz-Barquín Ernest Yeboah Acheampong Angéla Somogyi Neha Pirwani Richárd Gábor Szamosi Boróka Veronika Szócska Attila Szabo

Publication Name: Scandinavian Journal of Psychology

Publication Date: 2026-06-01

Volume: 67

Issue: 3

Page Range: 708-724

Description:

Superstitious behavior is highly prevalent in sports, providing athletes control over anxiety, psychological comfort, and perceived performance benefits. The first literature review on the topic was published in 2016. Since then, new research has expanded the knowledge in the area from cultural, psychological, and situational perspectives. Following the PRISMA guidelines, this systematic review aimed to update and expand the first review on the area. PubMed and Google Scholar articles were scrutinized after the original 2016 review (from 2016 to 2024), and Scopus, Web of Science, and ProQuest databases (not included in the original review) were examined without a time limit. We found 27 eligible studies, including 26 observational and one experimental study. We used the Mixed Methods Appraisal Tool (MMAT) to assess study quality. The included studies stem from India, Canada, Taiwan, Greece, Türkiye, Ghana, Hungary, Poland, Ukraine, the UK, the USA, Italy, Serbia, and Congo. Data extracted included age, gender, sport type, athletic level, cultural influences, psychological traits, and validated measurement tools. Superstitions in sports remain widespread. About 55.1% of athletes reported engaging in at least one superstition, and over 90% reported sport-specific rituals. Younger athletes exhibited higher levels of superstition than older ones. Gender differences were nuanced and context-dependent. Team and elite athletes relied more on superstitions than individual sports and amateurs. Cultural practices strongly influence superstitions, which often serve as coping mechanisms. They reduce anxiety and improve performance through placebo-like effects. However, excessive reliance on them can lead to burnout. This review confirms the enduring relevance of superstitions in sports. It emphasizes their cultural, psychological, and situational roles. The findings highlight gaps in understanding the placebo effects and long-term impacts of superstitious behaviors. Multidisciplinary research is needed to deepen insights into this complex phenomenon.

Open Access: Yes

DOI: 10.1111/sjop.70059

Evaluating Financial Development Indices with a Focus on Sustainability and Financial Resilience

Katalin Czakó István Szalai

Publication Name: Lecture Notes in Networks and Systems

Publication Date: 2025-01-01

Volume: 1574 LNNS

Issue: Unknown

Page Range: 419-426

Description:

This study examines current financial development indices, highlighting the need to incorporate sustainability and resilience metrics. It critically investigates three major indices: the IMF’s Financial Development Index, the World Economic Forum’s Financial Development Index, and the World Bank’s Global Financial Development Database through a comparative analysis. The authors propose the concept of a new Sustainable Financial Development Index (SFDI) that integrates indicators related to economic resilience and sustainability. The proposed composite index aims to provide a more comprehensive measure for policymakers to assess financial development across diverse economic contexts and promote sustainable growth and financial resilience.

Open Access: Yes

DOI: 10.1007/978-3-032-00447-5_40

Vibration characteristics of rolling elements in the presence of different friction and creep models

Mate Antali

Publication Name: Journal of Physics Conference Series

Publication Date: 2026-01-01

Volume: 3190

Issue: 1

Page Range: Unknown

Description:

Dynamics of wheels and other rolling elements in machines are significantly affected by the friction phenomena between the surfaces. When modeling the transitions between rolling and slipping motion, the simplest choice is applying the Coulomb friction model or the similar but improved models like the Stribeck model. However, when the local deformations are not negligible, often the so-called creep force models are used, which contain a coupled nonsmooth effect of the kinematic variables. This study investigates the effects of the different contact models on the properties of the vibrations. The models are demonstrated on 2D test problems of rolling elements. Mathematical methods of nonsmooth dynamics and singular perturbation are utilized to explore the details of the phenomena.

Open Access: Yes

DOI: 10.1088/1742-6596/3190/1/012001

Selective heating of different grain parts of wheat by microwave energy

E. Szijjártó A. J. Kovács E. Pallai-Varsányi M. Neményi

Publication Name: Advances in Microwave and Radio Frequency Processing Report from the 8th International Conference on Microwave and High Frequency Heating

Publication Date: 2006-01-01

Volume: Unknown

Issue: Unknown

Page Range: 312-320

Description:

The aim of author's research work was to investigate the effect of process parameters and microwave heat treatment condition on the inactivation of &-amylase enzyme being in wheat grains, responsible for decomposition of starch molecules without considerable damage of the gluten content. The task was furthermore to clear up the possibilities of selective moistening of the different wheat grain parts containing the &-amylase enzyme and the valuable gluten protein. For checking the results Magnetic Resonance Imaging method was used. © Springer-Verlag Berlin Heidelberg 2006.

Open Access: Yes

DOI: 10.1007/978-3-540-32944-2_33