University of Miskolc OJS
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Comparison of truss bridge structures designed for conveyor belt systems: ONLINE FIRST (pre-proof)
No full textIn open-pit mines, the installation of conveyor belt tracks may require conveyor bridges to span the terrain or existing structures. The paper compares the structural design options for truss bridge structures, with a particular focus on existing, recycled structures and prefabricated, modular elements. Three-dimensional finite element simulations were used to verify the first option, which is an existing structure meant for reuse to look at the natural frequencies, stress distributions, and deformed shapes. These results highlight the importance of investigating the vibrations caused by the movement of the conveyor belt and the wear of the rollers. The other option examined is a commercial solution based on a Bailey bridge, which is a portable, prefabricated, modular truss bridge designed for quick assembly without heavy equipment. The advantage of the modular design is that the structure can be reinforced by combining the elements, thereby increasing operational safety and economy
Applying Method of Line on cantilever beam under varying loads
No full textThe Method of Lines (MoL) is a powerful numerical technique for solving partial differential equations (PDEs) by discretising the spatial domain while keeping time as a continuous variable. In this study, we employ MoL to solve the fourth-order beam equation, which governs the dynamics of an Euler-Bernoulli cantilever beam. The primary objective is to develop a simplified computational model for a wind turbine blade, treated as a cantilever beam subjected to dynamic loading. The spatial discretisation is performed using finite difference approximations, transforming the governing PDE into a system of second-order ordinary differential equations (ODEs). The resulting ODE system is then integrated over time using Runge-Kutta
Design of an impeller of Pelton turbine
No full textPelton turbine impeller (often called Pelton wheel or Pelton runner) is the main rotating component of a Pelton turbine, which is a type of impulse water turbine used to generate electricity from high-head, low-flow water sources. The Pelton turbine operates on the impulse principle; water jet strikes the buckets of the runner and the change in momentum of the water jet produces a force that causes the runner to rotate. This article focuses on designing procedures to improve a damaged Pelton impeller
Investigation of properties of machine tools
No full textInspection of machine tools is a foundational element of modern manufacturing quality control. As industries demand tighter tolerances, increased automation and higher productivity, machine tools must operate at peak accuracy. Over time, all machine tools experience degradation caused by mechanical wear, thermal effects, vibration and environmental factors. Regular inspection helps ensure that the accuracy and reliability of machine tools remain within acceptable limits. This paper deals with investigation of machine tools
Sport Socialization and Its Role in Shaping Social Innovation in European and African Contexts
No full textThis article explores how sport socialization fosters social innovation in Europe and Africa. Drawing on interdisciplinary literature and empirical studies, the research highlights how sport participation serves as a catalyst for building social capital, promoting inclusion, and fostering community engagement. The analysis identifies family, peers, coaches, organizations, and digital platforms as pivotal agents facilitating sport socialization and driving social innovation. Differences in governance, policy frameworks, and socio-economic contexts between Europe and Africa result in distinct trajectories for leveraging sport in social innovation initiatives. European cases are marked by structured policies and decentralized governance, while African examples demonstrate dynamic grassroots innovation amidst limited formal support. Despite contextual challenges, both regions harness sport to address social exclusion and empower marginalized groups. The findings underscore the need for context-sensitive, participatory approaches to optimize the societal impact of sport-driven social innovations
Determinants of Income Poverty in an Underprivileged Area of Hungary
No full textThis study investigates the determinants of income poverty in Borsod-Abaúj-Zemplén county, one of Hungary’s most disadvantaged areas. Using household-level survey data collected through online and community-based channels, we apply multiple regression analysis to identify the socio-economic factors most strongly influencing per capita monthly net income. Our results highlight three significant determinants of income poverty: education level, household size, and distance from the county seat. Higher educational attainment substantially increases income, underscoring the importance of human capital in reducing poverty risks. Conversely, larger household size reduces per capita income, reflecting demographic pressures on limited resources. Distance from the county center also has a strong negative effect, pointing to the role of spatial inequalities and infrastructural disadvantages in shaping poverty outcomes. These findings highlight the importance of education, regional development, and demographic factors in shaping poverty risks. Policy implications include the need for integrated strategies that strengthen educational opportunities, improve infrastructure and accessibility, and target support for disadvantaged groups. Such measures are essential to break persistent cycles of deprivation and promote inclusive regional development
Understanding Contextual Variations in the Trust–Well-Being Nexus: An Examination of Social Mechanisms in Austria and Hungary
No full textThis study analyzes ESS Wave 11 data using PLS-SEM to assess how generalized trust shapes subjective well-being in Austria and Hungary through two mediators: social life (social contacts, participation) and solidarity/helpfulness (value-based prosocial orientations). In Austria, trust significantly predicts both mediators, which transmit its positive effects on well-being. In Hungary, trust relates only to social life, while solidarity shows no connection. Overall, results reveal strong context-specific differences in the trust–well-being relationship
A Van Hiele-szintek és a geometriai ábraértelmezés kapcsolata
No full textElsőéves matematika szakos egyetemi hallgatók geometriai szemléletének fejlettségét vizsgáltuk. Kutatásunk célja egyrészt annak feltárása volt, hogy a hallgatók átlagos Van Hiele-szintje megfelel-e az érettségi követelmények által implikált elvárásoknak, másrészt annak vizsgálata, hogy kimutatható-e kapcsolat a Van Hiele-szintek és a helyes geometriai ábraértelmezés között. A méréshez az Usiskin-féle Van Hiele-tesztet, az ábraértelmezés vizsgálatához pedig Usiskin bizonyítási tesztjének egy feladatát használtuk. Az eredmények azt mutatták, hogy a hallgatók jelentős része nem éri el az érettségi követelmények által feltételezett szintet, és statisztikailag szignifikáns kapcsolat sem mutatható ki a Van Hiele-szintek és a geometriai ábraértelmezés pontossága között
An Analysis of the Financial Sustainability of Public Universities in South Africa
Get PDFPurpose of the study: The purpose of this study is to analyse the financial sustainability of South African public universities from 2017 to 2021. The paper, therefore, seeks to analyse how these universities manage their resources amidst increasing student enrolment, increased costs, and limited state support.
Design/methodology/approach: The study follows a qualitative methodology. The research paper uses calculated and analysed financial ratios to analyse various aspects of financial sustainability, together with a methodical assessment of existing literature and a content analysis of the annual audited financial statements of 23 different public universities.
Findings: The research indicates that while several public universities have improved their financial stability over time, the extent of this improvement varies among universities. While some universities exhibit a high level of financial management, at the same time, others are exposed to financial risks. The improvement in reserve ratios also points towards better financial planning; however, the increasing operational costs, specifically those of personnel, are a cause for concern. The complex relationship between state support, own funding, and operational efficiency has been highlighted, besides pointing to an orientation towards innovative funding solutions for enhancing financial sustainability and education quality.
Recommendations/value: To secure financial sustainability, universities must adopt robust risk management strategies, improve liquidity by managing debt more effectively, and shift towards more diversified funding sources. Additionally, aligning financial strategies with operational efficiency will be crucial in maintaining educational quality amid growing fiscal pressures.
Managerial implications: The findings of this study have significant managerial implications for the contemporary field of higher education management. The findings underscore the urgent need for national policy reforms to ensure predictable and equitable funding allocations. Government should reassess the sustainability of current NSFAS funding models. Furthermore, policies promoting third-stream income generation such as research commercialisation and public-private partnerships should be prioritised to reduce reliance on government grants. Strategic policy alignment is essential to ensure that higher education institutions remain financially viable while fulfilling their social mandate of access and quality educatio
Efficiency analysis of the Hill Climbing and Elitist Strategy of Ant System in the application of Flow Shop Scheduling Problems
Get PDFThis paper examines the efficiency of the Hill Climbing and Elitist Strategy of Ant System algorithms on a well-known production scheduling task, the Flow Shop Scheduling task. In the task, the properties of the machines and jobs are given and all jobs must be performed on each machine. The objective function is the makespan minimization. For this task, the researchers created benchmark datasets on which the efficiency of each algorithm can be proven. This research uses the Taillard dataset to demonstrate the efficiency of the algorithms