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Found 6383 publications

Adaptation of road safety inspection method to railway level crossings

Dániel Miletics Marcell Ladich

Publication Name: Pollack Periodica

Publication Date: 2025-03-26

Volume: 20

Issue: 1

Page Range: 39-45

Description:

In recent years, the number of road traffic crashes showed a decreasing trend in Hungary, but this cannot be stated about crashes at road-railway level crossings. The Hungarian Railways has repeatedly called attention to the dangers of rail transport. The main goal of this paper is to develop a new safety inspection method for road-railway level crossings based on the existing road safety inspection method. Based on the experiences of road safety inspections completed at ten locations suggestions were given for the adaptation of the method to railway crossings. The most important findings of the safety inspections are also presented in the paper.

Open Access: Yes

DOI: 10.1556/606.2024.01043

HUNGARIAN LEADERSHIP TYPES AND CLUSTERS CREATED IN THE „HABITS” LEADERSHIP AND ORGANISATIONAL EXCELLENCE RESEARCH PROGRAM

Gábor Szábo-Szentgróti Berke Szilárd Kőműves Zsolt Sándor Csapai Gyopár

Publication Name: Vezetestudomany

Publication Date: 2025-03-14

Volume: 56

Issue: 3

Page Range: 29-44

Description:

The authors of the study look for answers to the question of the relationship between high organizational performance and certain behavioural components of a leader and what factors are the basis for the creation of distinct clusters of leaders in the Hungarian top management. The authors of the paper do not attempt to define leadership excellence at this stage but rather to identify possible links and test some of the subjective (human) and objective (market performance) variables that help to measure excellence. The main results include the identification of 9 leadership subtypes, which are: Tool User, Strategist, Perfectionist, Emotional Leader, Over-sensitive, Secretive, Marketing Oriented, Serene Hedonist and Survivalist. The 3 groups identified as a result of the cluster analysis are: Uncertain Empathiser, Emerging Purposeful, and Experienced Strategist.

Open Access: Yes

DOI: 10.14267/VEZTUD.2025.03.03

Morphological and Molecular Identification of Oryctes (Coleoptera: Scarabaeidae) Collected from Date Palm Plantations in Algeria

Jenő Kontschán Habib Bouazzi Kamel Guimeur Belkacem Boumaraf Sana Rais Inesse Saadi

Publication Name: Journal of Entomological Science

Publication Date: 2025-03-14

Volume: 60

Issue: 2

Page Range: 236-243

Description:

Light traps operated from May 2022 to August 2023 collected Oryctes beetles (Coleoptera: Scarabaeidae) in date palm (Phoenix dactylifera L.) plantations in El Oued, Algeria. Morphological examination of 105 adult Oryctes specimens collected from the plantations revealed them to be Oryctes agamemnon arabicus (Fairmaire). Molecular identification, using the cytochrome oxidase c subunit I (COI) marker, confirmed those identifications. Notably, MASH analysis revealed differing degrees of genetic similarity, suggesting nuanced genetic diversity within the population. Utilizing Kraken2 software and the COI database from the National Center for Biotechnology Information, we also determined a high classification rate of approximately 99% of reads for all samples, reinforcing the identity of the specimens as O. agamemnon. These results help advance taxonomic knowledge of the insect fauna of the region as well as supporting environmental conservation initiatives.

Open Access: Yes

DOI: 10.18474/JES24-11

Positive Motherhood at Work: Factors Supporting a Sustainable Workforce Through Reintegration After Returning from Maternity Leave

Márta Konczos Szombathelyi Petra Kinga Kézai Nikolett Szabó-Cseszneki

Publication Name: International Journal of Innovative Research and Scientific Studies

Publication Date: 2025-03-04

Volume: 8

Issue: 2

Page Range: 3789-3796

Description:

This study explores sustainability through the successful reintegration of women into the workforce following maternity leave. It aims to identify the key factors that contribute to positive motherhood at work and their role in building a sustainable workforce. The research is based on a systematic literature review using Scopus-indexed sources from 2006 to 2024, focusing on "maternity leave" and "wellbeing." The study applies a grounded theory approach to analyze existing organizational policies and workplace practices that influence female employees' reintegration. The findings highlight the necessity of a supportive work environment that facilitates the balance between career and motherhood. Key factors affecting reintegration include organizational policies, workplace culture, and supervisor support. The study also identifies gaps in existing research and the need for further empirical studies on reintegration practices in different industries and countries. Successful reintegration of women after maternity leave is essential for fostering a resilient and inclusive workforce. Organizations that implement supportive measures enhance employee retention, satisfaction, and overall workplace sustainability. The study's insights will inform primary research on reintegration policies in commercial banks across multiple countries. The findings will serve as a foundation for developing a model and best practices to improve the reintegration of women post-maternity leave. This research has broader implications for policymakers, HR professionals, and organizations aiming to promote gender equality and workforce sustainability.

Open Access: Yes

DOI: 10.53894/ijirss.v8i2.6108

Fetal growth restriction as the disease of the placenta

Belics Zorán Gérecz Balázs Molnár Gizella Hupuczi Petronella

Publication Name: Orvosi Hetilap

Publication Date: 2025-03-02

Volume: 166

Issue: 9

Page Range: 331-340

Description:

Fetal growth restriction (FGR) as a common pregnancy complication is generally defined as the failure of a fetus to achieve its genetically determined full growth potential due to placental dysfunction. Early-onset (<32. gestational week) FGR is associated strongly with abnormal trophoblastic invasion and consequent placental insufficiency. Conditions leading to FGR are the disorders inherent to the fetal-placental-maternal unit, fetal malnutrition, resulting in a significantly increased risk of stillbirth, neonatal morbidity, neonatal death, and long-term adverse outcome. Once the fetal size, typically using estimated fetal weight and/or abdominal circumference below the tenth percentile compared to gestational age reference standards, multimodality assessment (including Doppler velocimetry in umbilical, and middle cerebral arteries, CTG and biophysical profile) is recommended. At present, the most recognized criteria to define early and late FGR are those derived from an international Delphi survey consensus. Early diagnosis, close follow-up and timely delivery of pregnancies with FGR are of crucial importance for perinatal short- and long-term outcome. The main distinction between small for gestational age (SGA) and growth-restricted fetus is that the healthy SGA fetus may be small but not at increased risk of adverse perinatal outcome.

Open Access: Yes

DOI: 10.1556/650.2025.33254

Relationships between Shear Strength Parameters with Mineralogy and Index Properties of Compacted, Unsaturated Soils

Elizabeth Theron Sai K. Vanapalli Armand Augustin Fondjo Richard P. Ray

Publication Name: Studia Geotechnica Et Mechanica

Publication Date: 2025-03-01

Volume: 47

Issue: 1

Page Range: 65-88

Description:

The objective of this study is to assess the influences of soil index properties, swelling parameters, and soil mineralogy on unsaturated shear strength parameters (φ', φb, c') of compacted expansive soils. The laboratory tests include the grain size distribution, specific gravity (Gs), Atterberg limits, swelling potential, X-ray diffraction, modified Proctor compaction, soil suction, and triaxial testing. MINITAB 19 statistical analysis software generates the tri-dimensional surface graphs. The values φ', φb, and c"are majorly influenced by water (%), Gs, and clay (%). φ"shows a strong correlation with free swell ratio (FSR), free swell index (FSI), and void ratio. φb demonstrates a strong relationship with liquid limit, plasticity index, and γd (dry unit weight). φ"and c"portray a moderate relationship with liquid limit, plasticity limit, and γd. φ"exhibits a moderate correlation with smectite (%) and plagioclase (%). φb describes a strong relationship with smectite (%) and a moderate correlation with plagioclase and K-feldspar (%). c"depicts a moderate correlation with smectite (%), K-feldspar (%), and plagioclase (%). The matric suction controls the behaviour of unsaturated soils. Nonetheless, the influences of soil index properties, swelling potential, and mineralogy on shear strength are not marginal. These findings provide a good insight into the behaviour of unsaturated expansive soils and contribute to enhancing geotechnical modelling.

Open Access: Yes

DOI: 10.2478/sgem-2025-0006

Key characteristics and role of lead users in medical device innovations: An exploratory study

Tibor Dőry Béla Venesz

Publication Name: Journal of Innovation and Knowledge

Publication Date: 2025-03-01

Volume: 10

Issue: 2

Page Range: Unknown

Description:

Developing medical device innovations is a lengthy and costly endeavor, so engaging the right participants early in the process is crucial. While much of the existing literature focuses on procedural aspects of innovation, the human factors that influence success are often overlooked. The Lead User Method is designed to identify key contributors based on their ability to stay ahead of market trends and realize significant benefits. However, it has been criticized for inadequacies in its identification process. To address this gap, our study distinguishes seven key personal characteristics of medical lead users that are essential for successful co-created new product development. Through case studies and semi-structured interviews, we demonstrate that engaging lead users throughout the new product development process—regardless of product complexity—enhances product-market fit and profitability. Their involvement becomes increasingly critical as the process advances, particularly during the market diffusion phase. Our research refines the Lead User Method's identification process and provides actionable insights for decision-makers, reducing uncertainty in medical device innovation while lowering development costs and time and increasing product-market fit and profitability.

Open Access: Yes

DOI: 10.1016/j.jik.2025.100677

The Influence of Different Heel Heights on Squatting Stability: A Systematic Review and Network Meta-Analysis

Gusztáv Fekete Huiyu Zhou Liuran Duan Ukadike Chris Ugbolue

Publication Name: Applied Sciences Switzerland

Publication Date: 2025-03-01

Volume: 15

Issue: 5

Page Range: Unknown

Description:

The back squat (BS) is one of the most effective exercises for enhancing lower limb strength, but an unstable squat can increase shear forces in the lower back. Understanding how to assess the squat stability is useful for avoiding potential sports injury. During the BS, the trunk lean and center of pressure (COP) are relevant to squat safety, and these kinematics can be altered by elevating the heel. However, there is no relevant meta-analysis on the impact of different heel heights on squat stability. This study aims to bridge the gap in the literature by conducting a systematic review and network meta-analysis on how heel elevation affects squat stability. By quantifying the influence of different heel heights on key biomechanical parameters, such as the center of pressure deviation and ankle dorsiflexion, the study provides actionable insights for athletes, trainers, and clinicians. Fourteen articles were included, and the majority of these studies demonstrated that elevated heels (EHs) can reduce COP deviation and trunk lean. In addition, 25 mm heels may be the preferred option for squat stability in the AP direction when COP data and network meta-analysis are combined. However, in the ML direction, the capacity to maintain balance is rather questionable; when ankle peak dorsiflexion is combined, 8 mm heels have higher COP deviation values and 5 mm heels have lower COP deviation values. Regarding limitations, reliance on a single bias assessment tool (Cochrane Risk of Bias Tool) might not fully capture methodological variability across non-RCT studies. Future systematic reviews could consider using multiple bias assessment tools for robust assessment.

Open Access: Yes

DOI: 10.3390/app15052471

Script-Based Material and Geometrical Modeling of Steel–Concrete Composite Connections for Comprehensive Analysis Under Varied Configurations

János Szép Majid Movahedi Rad Daniel Gosztola Péter Grubits

Publication Name: Applied Sciences Switzerland

Publication Date: 2025-03-01

Volume: 15

Issue: 6

Page Range: Unknown

Description:

The behavior of steel–concrete composite structures is significantly influenced by the efficiency of the shear connections that link the two materials. This research examines the performance of stud shear connectors, with an emphasis on analyzing the effect of different geometric design parameters. A computational model was created utilizing Python 3.13 to enable thorough digital monitoring of the influence of these parameters on the structural performance of composite connections. Developed within the ABAQUS framework, the model integrates geometric nonlinearity and the Concrete Damage Plasticity (CDP) approach to achieve detailed simulation of structural behavior. Essential design aspects, including stud diameter, stud height, head dimensions, and spacing in both longitudinal and transverse directions, were analyzed. The Python-based parametric model allows for easy modification of design parameters, ensuring efficiency and minimizing modeling errors. The significance of stud diameter changes was analyzed in accordance with Eurocode standards and previous studies. It was found that stud length has a reduced effect on structural performance, particularly when considering the concrete properties used in bridge construction, where compressive failure of the concrete zone is more critical at lower concrete strengths. Additional factors, such as stud head dimensions, were investigated but were found to have minimal effect on the behavior of steel–concrete composite connections. Longitudinal stud spacing emerged as a critical factor influencing structural performance, with optimal results achieved at a spacing of 13d. Spacings of 2d, 3d, and 4d demonstrated overlapping effects, leading to significant performance reductions, as indicated by comparisons of ultimate load and force–displacement responses. For transverse spacing, closer stud arrangements proved effective in reducing the likelihood of slip at the steel–concrete interface, enhancing composite action, and lowering stress concentrations. Additionally, reducing the transverse distance between studs allowed for the use of more shear connectors, increasing redundancy and enhancing performance, especially with grouped-stud connectors (GSCs).

Open Access: Yes

DOI: 10.3390/app15063095