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METHOD FOR EVALUATING THE DURABILITY OF MOULD SLEEVES FOR HIGHPRESSURE DIE CASTING OF AL IN MELT
Full text linkThe paper presents the results of research aimed at determining the quality of renovation layers for the restoration of shaped parts of molds for high-pressure casting of aluminum alloys. An analysis of the wear of the shaped parts of the mold was carried out and the dominant degradation mechanisms were identified. A method of modifying the surface of the shaped parts of the molds by creating a stochastic texture with a low-energy laser in combination with duplex PVD coatings on the surfaces of the parts of the molds that are in contact with the molten aluminum alloy was proposed and verified. The methodology of measuring the contact angle for determining the number of sprays with a separating agent - lubricant on the surface of a new or of the renovated shaped part of the mold before the first casting cycle. Dievar, Dratec, UTPA 702 additional materials were verified for the creation of renovation layers. PVD coatings were applied to increase the durability of the layers. The coefficient of corrosion resistance of clads in aluminum alloy was determined
SUSTAINABILITY VIA ACTIVE GARDEN EDUCATION (SAGE): THE PROCESS OF INCORPORATING WATERING INTO STRUCTURED PRESCHOOL CURRICULUM
Full text linkSchool gardens provide rich outdoor learning opportunities for young children. Practical considerations about garden maintenance, in particular, watering, can impeed success. This manuscript chronicles the development of garden maintenance strategies in Sustainability via Active Garden Education (SAGE). SAGE installed raised-bed gardens and provided a complete curriculum focused on increasing children’s active time and improving healthy eating habits while fostering garden stewardship. SAGE was implemented by trained research personnel in four early care and education (ECE) facilities in Houston, Texas (SAGE 1, Summer, 2013), one ECE facility in Phoenix, Arizona (SAGE 2, Spring, 2017), and 24 ECE facilities in Phoenix, Arizona (SAGE 3, Autumn 2017- Spring 2020). ECE facilities offered structured education to preschool-aged children (3-5 years) from lowincome families (~70% Hispanic/Latino). The SAGE curriculum was implemented weekly or twice weekly in 1-hour, continuous sessions that included songs, games, and interactive learning activities involving garden maintenance, i.e., watering the garden. In SAGE 1, watering was completed once a week with high observed fidelity (92.9%). Exit interviews demonstrated ongoing garden maintenance after the formal implementation of SAGE was over. SAGE 2 was adapted to increase watering to twice a week, every time the curriculum was implemented with high fidelity (93.8%). Additional water usage for watering the garden twice a week incurred 251USD (in 2018) in supplies and were easy to install. Watering fidelity was again high (91.4%). The most common reason for not watering was rain. Gardens were watered more consistently when teachers were leading the session (94.7%) compared to when SAGE led the session (88.9%; p < .048). The SAGE studies demonstrated that with modest resources, minimal training and a structured curriculum, preschools can achieve regular garden maintenance, offering unparalleled outdoor learning opportunities for teachers and young children alike
ACCOUNTANCY PROFESSION IN A DIGITAL WORLD – TRANSFORMATION IN PROGRESS
Full text linkThe global economy has been experiencing enormous transformation in recent years. Technology and innovations have enabled organisations to reconsider their business models to satisfy the more specific market needs and the higher social expectations. Digital innovations such as robotic automation, generative artificial intelligence and developed digital platforms have already started reconfiguring traditional business operations. This whole change will not only enhance organizational efficiency but will also bring new potential for additional sustainable value. For sure this will be a change for the better and will leave a permanent footprint on the accountancy profession, being the “language of business”. The purpose of this paper is to analyze the effect of new technological innovations on the role of the professional accountant. To meet the new rapidly shifting expectations, the way in which the accountancy profession is being practiced needs to be transformed and this paper will try to examine the general trends and challenges in this process of transformation. The main finding in this study is that the adoption of new technologies would rather increase than decrease the importance of accounting experts and it is crucial for them to adapt and acquire new digital skills, strategic understanding and a lifelong learning attitude to grasp the opportunities, which the new digital world is bringing to them
BANK RUNS: REGULATION VS. COORDINATION PROBLEM
Full text linkThis paper employs game theory to provide insights into the phenomenon of bank runs. The model presented in the study involves each player making a decision between withdrawing their deposit from the bank, thereby forfeiting accumulated interest, or leaving the deposit in the bank, which involves the risk of partial or total loss. The model incorporates variables such as interest rates, transaction fees, stock falls rate, and deposit insurance to reflect real-world conditions. The primary aim of this contribution is to analyze the fundamental causes of bank runs and evaluate the effects of deposit insurance on depositors\u27 withdrawal strategies. Within the framework of a dynamic game with incomplete information, a payoff matrix is constructed for the players, and the results are thoroughly examined. The analysis reveals two Bayesian Nash equilibria and identifies two strategies that are considered optimal in the context of the game without deposit insurance. In this scenario, these strategies lead to the occurrence of a bank run. Conversely, when deposit insurance is introduced into the game, the optimal strategy shifts to keeping deposits in the bank. This adjustment reduces the likelihood of bank runs, highlighting the stabilizing effect of deposit insurance on the banking system. Nevertheless, the article shows with examples, that the deposit insurance is not such effective as it is thought and that the bank run is a coordination problem rather than regulation, while the macroprudential policy plays a significant role in the depositor’s behavior
THE METHODS OF TEACHING AND LEARNING STRUCTURAL MECHANICS
Full text linkStructural mechanics is a key issue to study for engineers. A high rank and high social responsibility profession require both a high graded and intuitive approach. The evolution of learning / teaching methodology follows the novel technical achievements of every decade. The aim remains the same: to produce a professional to perform advanced relevant analysis and safe, optimal structural design
EXPLORING PEER ASSESSMENT IN UNDERGRADUATE ESSAY WRITING: CHEMISTRY MODULE STUDY
Full text linkThis article reports on a study that investigates the impact of peer assessment on undergraduate students\u27 understanding of essay writing criteria within the Chemistry Molecules in Action module. The study involved 44 first-year undergraduate students from diverse academic backgrounds who participated in a formative activity for which they wrote a 700-word essay on a specific topic and assessed two essays from their peers. The research aimed to examine student perceptions of peer assessment as a tool for enhancing essay writing skills, collaborative work, and the ability to provide constructive feedback and engage critically with peers\u27 essays. Data collection included an anonymous online survey distributed to all module students, focusing on the effectiveness, challenges, and benefits of peer assessment. The findings provide insights into diverse perspectives on the efficacy of peer feedback and anticipated challenges, highlighting the importance of tailored support and resources to foster a supportive peer assessment environment. These findings contribute to ongoing discussions on the efficacy of peer assessment and pedagogical enhancement strategies in higher education
THE EXPERIENCES OF PRE-SERVICE TEACHERS WHO PARTICIPATED IN COURSES THAT INCLUDED AN INDEPENDENT STUDY UNIT ON AN ONLINE CAMPUS
Full text linkThis study examined the experiences of pre-service teachers who participated in courses that included an independent study unit on an online campus (Campus IL) to understand the advantages and challenges of this experience. The research was rooted in the Self-Determination Theory (SDT) perspective, which postulates that there are basic universal psychological needs that must be satisfied for people to experience growth: connection and relatedness, competence, and autonomy. The participants were 30 students enrolled in three different courses on Hebrew language teaching. The research tools included a semi-structured questionnaire that the students filled out at the end of the semester and in-depth interviews with 22 students who expressed their consent to be interviewed. Four main findings emerged from the data analysis: (1) a positive, professional, and sense of competence experience (2) enjoyment from the diversity of teaching methods and Improvement in their Academic Learning Skills (3) satisfaction with the flexibility of the schedule; and (4) sense of connection and relatednes
EVALUATION OF MONITORING SYSTEMS FOR SEEDER SEED SPACING UNIFORMITY
Full text linkProper seed placement in the soil is crucial for optimal germination and initial plant growth during the seeding operation. Ideally, seeds should be positioned at a predetermined and uniform spacing and depth. However, in practice, there is often a significant deviation from the desired seed placement. Research on a seed flow detection device for seed metering systems of seeders is highly important. It ensures monitoring of the seeding rate, detects missed seeding, allows real-time reseeding during the precision seeding process, and increases overall precision seeding intelligence. Achieving a uniform distribution of seeds in a furrow maximizes the growing area for each plant and enhances yields by reducing competition among neighboring plants. Furthermore, uniform seed placement helps in weed suppression. Precision agriculture plays a crucial role in optimizing crop yield and resource efficiency, and accurate seed spacing is a fundamental aspect of this practice. This paper provides a concise overview of monitoring systems designed to ensure seed spacing uniformity in seeders, addressing the challenges associated with traditional methods and highlighting the advancements in technology. The review encompasses various sensor technologies, including optical, piezoelectric, radio wave, and computer vision-based systems, which enable real-time monitoring of seed placement during the seeding process. The integration of these monitoring systems with seeders allows for instant feedback and adjustment, minimizing the risk of uneven seed distribution. The synthesis of information from recent studies and technological developments underscores the significance of continuous research and innovation in monitoring systems for achieving optimal seed spacing uniformity in modern agriculture
THE FUTURE PERSPECTIVES OF RECEIVING RIVERS UNDER THE REVISED URBAN WASTEWATER TREATMENT DIRECTIVE
Full text linkThe updated Urban Wastewater Treatment Directive (UWWTD) represents a significant change in the European Union\u27s strategy for better surface water quality management. Addressing the increasing pressures from urbanization, climate change, and industrial activities, the directive introduces stricter regulations and innovative approaches to enhance the treatment and achieve integrated wastewater management. The major goal is to pursue synergies with other EU legislation and to meet the requirements of the Water Framework Directive (WFD), Drinking Water Directive. Key measures include enhanced nutrient removal processes, stricter monitoring of micropollutants, and promoting circular economy principles in water management. The main objective of this research is to examine the impact of the urban wastewater treatment plant on the receiving rivers, in the light of the abovementioned new regulations. Therefore, the effect of seasonality at different water levels in Veszprem city area (Hungary) was investigated for one year. The monitored water quality indicators were nitrogen and phosphorus nutrients, some specific pollutants containing heavy metal ions (such as Cd(II), Zn(II), Cu(II), and Pb(II)), and residual traces of pharmaceuticals, which were detected mainly in the spring and autumn seasons respectively, in the form of analgesics (e.g. painkillers)
EXPLORING HUMAN-CENTERED PHILOSOPHY IN SPORT: THE CASE OF RED BULL SALZBURG
Full text linkThis study explores the application of human-centered philosophy in sports, focusing on Red Bull Salzburg\u27s integration of this approach into its management practices. Since its acquisition by the Red Bull Group in 2005, the club has transformed from a traditional football entity into a globally recognized brand by prioritizing player development, community involvement, and ethical values. Led by Dietrich Mateschitz, this shift emphasizes holistic growth, fostering both personal development and social responsibility. This research highlights how philosophical principles, including ethical considerations and intrinsic values, enhance human experience in sports. Red Bull Salzburg\u27s commitment to inclusivity, personal growth, and community engagement is a model that balances business success with human values. The club’s youth academy, fan culture, and community initiatives focus on nurturing life skills and psychological well-being and creating inclusive environments. Although initially criticized for its corporate restructuring, Red Bull Salzburg has successfully balanced its commercial achievements, generating €463 million in transfer profits over the last decade, with a human-centered philosophy. This approach shows how sports organizations can prioritize human dignity and ethical values while achieving financial success, thereby offering a sustainable model for the future of sports management