1. A Bayesian analysis of hop price fluctuationsDouglas MacKinnon, Martin Pavlovič, 2020, original scientific article Abstract: This paper quantifies the correlation between U.S. season average prices for hops with U.S. hop stocks and U.S. hop hectarage. The Hop Equilibrium Ratio, a measure of the supply/demand relationship for U.S. hops, was introduced. Through the Bayesian inference method, the authors used these data to calculate the effect an incremental change to one metric had on the probability of directional changes of future U.S. season average prices (SAP). Between 2010 and 2020, the dominance of proprietary varieties created unprecedented cartel-like powers offering opportunities for supply- and price-management. Research results will enable more accurate forecasting and greater price stability in the hop industry. Keywords: alpha-acid, Bayesian theorem, brewing industry, economies of scale, equillbrium, hop market Published in DKUM: 28.01.2025; Views: 0; Downloads: 2
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2. Digital transformation reduces costs of the paints and coatings development processTomaž Kern, Eva Krhač Andrašec, Benjamin Urh, Marjan Senegačnik, 2020, original scientific article Abstract: An essential characteristic of the new product development process is to develop a new marketable product in the shortest possible time with the lowest reasonable costs. Therefore, the key factor of the process is efficiency. The paints and coatings industry development process contain numerous laboratory tests to determine the appropriateness of new formulation. It is proven that digital transformation can reduce the number of laboratory tests and consequently shorten the throughput time of the development process. This raised the question of whether the faster development process also reduces the process’ cost, or they even increase due to information and communication technology implementation. Therefore, the research’s purpose was to determine whether reducing the number of laboratory tests, based on the implementation of information and communication technology (ICT), affects reducing costs in the paints and coatings development process. The conventional process and the redesigned process of paints and coatings development were used as the basis of the research. The comparative analysis of the costs incurred during the development process was made. The analysis compares the types and amount of incurred costs. The article proves that digital transformation has a significant impact on up to 48% on reducing costs of the paints and coatings development process. Keywords: coatings industry, digital transformation, development process, process redesign, technical enabler, implementation cost, rentability threshold Published in DKUM: 24.01.2025; Views: 0; Downloads: 2
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3. Sustainable hydrothermal co-carbonization of residues from the vegetable oil industry and sewage sludge : hydrochar production and liquid fraction valorisationAleksandra Petrovič, Tjaša Cenčič, Jelena Parlov Vuković, Tomislav Jednačak, Silvo Hribernik, Sabina Vohl, Danijela Urbancl, Marina Tišma, Lidija Čuček, 2024, original scientific article Abstract: In this study, the hydrothermal co-carbonization (co-HTC) of residues from the vegetable oil industry (pumpkin oil cake– PC, hemp oil cake– HC) and sewage sludge (SS) was investigated for the first time. The co-HTC was performed at 250 C and atreatment time of 5 h. The effects of the mass ratio of the feedstocks (1:1, 1:3 and 3:1) on the properties of the HTC products were investigated using various analytical methods (NMR, XRD, 3D-EEM, FTIR, etc.). The co-HTC of SS with oil cakes resulted in improved fuel properties of the hydrochar and an increase in C content from 36.9 to 53.7 wt%, and an increase in the higher heating value (HHV) from 14.8 to 23.6 MJ/kg. The combination with HC gave hydrochars with a higher HHV and higher C content than the combination with PC. The hydrochar yield varied in the range of 39.4–55.3 wt%. NMR analysis revealed a higher proportion of aliphatic (~60 %) than aromatic compounds (~35 %) in the hydrochars, as well as a high content of orthophosphate and unsaturated fatty acids. The liquid fractions were rich in nutrients and organic compounds, but toxic to aquatic organisms. The hydrochars and liquid fractions performed well in the germination test with plant species. Keywords: hydrothermal co-carbonization, sewage sludge, vegetable oil industry residues, hydrochar, liquid fraction, valorisation Published in DKUM: 17.01.2025; Views: 0; Downloads: 4
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4. Analysing the relationship between hotelsʹ internal marketing and employee engagement dimensionsKristina Črnjar, Jasmina Dlačić, Borut Milfelner, 2020, original scientific article Abstract: Purpose – In the hotel industry, as in all services, the goal is to have satisfied employees who are engaged in their job. From a marketing perspective, one of the possible ways companies can achieve that is by adopting internal marketing practices. Hence, the purpose of this paper is to research the relationship between internal marketing and different dimensions of employee engagement (emotional, cognitive and physical) in the hotel industry.
Design/Methodology/Approach – The data was collected through a paper-and-pencil questionnaire on a sample of 573 hotel employees in Croatia. Adapted scales from previous research were used for measuring research constructs using the back-translation technique. Conceptual model and hypotheses were tested with covariance based structural equation modelling.
Findings and implications – The results show that internal marketing had a positive and statistically significant impact on emotional and cognitive engagement. Cognitive engagement, in turn, had a positive impact on emotional and physical engagement, while emotional engagement had a positive impact on physical engagement.
Limitations – The use of self-evaluations could potentially cause social desirability bias. The study is limited only to Croatian hotels, which might vary from hotel industries in other parts of the world.
Originality – This paper contributes to the development of internal marketing, as it identifies the relationship between internal marketing and different forms of employee engagement. Employee engagement is approached multidimensionally as consisting of emotional, cognitive and physical engagement. By distinguishing different engagement dimensions, the paper contributes to the theory of personal engagement with testing employee engagement concept in the hotel industry. Keywords: internal marketing, employee engagement, hotel industry, hotels, Croatia Published in DKUM: 16.01.2025; Views: 0; Downloads: 7
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5. Speeding up the implementation of industry 4.0 with management tools : empirical investigations in manufacturing organizationsRok Črešnar, Vojko Potočan, Zlatko Nedelko, 2020, original scientific article Abstract: The main purpose of this study is to examine how the use of management tools supports the readiness of manufacturing organizations for the implementation of Industry 4.0. The originality of the research is reflected in the exploration of the relationship between the use of the selected well-known management tools and their readiness for the implementation of Industry 4.0, which was assessed using a combination of two models—one developed by the National Academy of Science and Engineering (Acatech) and the other by the University of Warwick. The relationship was assessed by applying structural equation modeling techniques to a data set of 323 responses from employees in manufacturing organizations. The results show that the use of six sigma, total quality management, radio frequency identification, a balanced scorecard, rapid prototyping, customer segmentation, mission and vision statements, and digital transformation is positively associated with Industry 4.0 readiness. Inversely, outsourcing and strategic planning are negatively associated with Industry 4.0 readiness, while lean manufacturing, which is often emphasized as the cornerstone of Industry 4.0 implementation, is not associated with Industry 4.0 readiness in our study. These findings can help organizations to understand how to consider and measure readiness for the implementation of Industry 4.0 more comprehensively and present guidelines on how the use of management tools in manufacturing organizations can foster their implementation of Industry 4.0 principles. Keywords: industry 4.0, readiness, implementation, management tools, manufacturing organizations Published in DKUM: 16.01.2025; Views: 0; Downloads: 3
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6. Understanding future leaders : how are personal values of generations Y and Z tailored to leadership in industry 4.0?Rok Črešnar, Zlatko Nedelko, 2020, original scientific article Abstract: This study combines two main challenges for organizations today, as it examines the alignment between personal values of future leaders and the values needed in the Industry 4.0 workplace. Based on the movement of the organizational environment toward a more multidisciplinary, open, collaborative and multicultural environment, we presuppose that the Industry 4.0 workplace requires a more benevolent, universally oriented and generally self-transcended leaders. Drawing upon Schwartz’s value theory, we examine the impact of Generations Y and Z’s personal values on their leadership inclination. The results from the survey of 371 young participants from Generations Y and Z reveal that self-enhancement (i.e., power and achievement), openness to change and conservation values most significantly affect leadership inclination. Meanwhile, benevolence, universalism and general self-transcendence values—cornerstones of the Industry 4.0 workplace—show negative effects on leadership inclination in the frame of the Industry 4.0 workplace. This indicates a poor fit between the values of future leaders and the values of the Industry 4.0 workplace. These findings have significant implications for human resource management in future organizations and contribute to the understanding of future leaders. In addition, the findings can help organizations to manage sustainable workings in an Industry 4.0 environment. Keywords: personal values, future leaders, Industry 4.0, Gen Y, Gen Z, organizations, Industry 4.0 workplace, Slovenia Published in DKUM: 15.01.2025; Views: 0; Downloads: 2
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7. Big data usage in European Countries : cluster analysis approachMirjana Pejić Bach, Tine Bertoncel, Maja Meško, Daila Suša-Vugec, Lucija Ivančić, 2020, original scientific article Abstract: The goal of this research was to investigate the level of digital divide among selected European countries according to the big data usage among their enterprises. For that purpose, we apply the K-means clustering methodology on the Eurostat data about the big data usage in European enterprises. The results indicate that there is a significant difference between selected European countries according to the overall usage of big data in their enterprises. Moreover, the enterprises that use internal experts also used diverse big data sources. Since the usage of diverse big data sources allows enterprises to gather more relevant information about their customers and competitors, this indicates that enterprises with stronger internal big data expertise also have a better chance of building strong competitiveness based on big data utilization. Finally, the substantial differences among the industries were found according to the level of big data usage. Keywords: big data, cluster analysis, digital divide, k-means, enterprise, industry, Europe, quality Published in DKUM: 14.01.2025; Views: 0; Downloads: 2
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8. Emotional intelligence of engineering students as basis for more successful learning process for Industry 4.0Slavica Mitrović Veljković, Ana Nešić, Branislav Dudić, Michal Gregus, Milan Delić, Maja Meško, 2020, original scientific article Abstract: The purpose of this paper is creating analyses for understanding the personality characteristics related to emotional intelligence and how can this define the development program of personal characteristics in the processes of education for Industry 4.0. The main research goal is to measure dimensions of emotional intelligence in the student population based on a quantitative survey (Emotional Competence Inventory) through dimensions of emotional intelligence: self-regulation, self-awareness, and attitude towards changes. Since the student population was the research target, a group of 338 engineering students was selected. The group was characterized by highly diversified geographic origin, having previously completed school and achieved success. The results show that there are statistically significant differences between all three dimensions of emotional intelligence. Namely, self-regulation and attitude towards changes (both directly and indirectly through self-regulation) are positively affected by self-awareness, while attitude towards changes is positively affected by self-regulation. Developing student emotional potential is one of the most important actuators of business for Industry 4.0, especially in countries with low educational attainment and low social and economic indicators. Keywords: learning process, emotional intelligence, Industry 4.0, students, engineering studies Published in DKUM: 06.01.2025; Views: 0; Downloads: 2
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9. Eco-design processes in the automotive industryEwelina Staniszewska, Dorota Klimecka-Tatar, Matevž Obrecht, 2020, original scientific article Abstract: Every year approximately 70 million passenger cars are being produced and automotive industry is much bigger then just passenger cars. The impact of automotive industry on the environment is tre-mendous. From extracting raw materials through manufacturing and assembly processes, exploitation of the vehicle to the reprocessing irreversible, extensive environmental damage is done. The goal of this study is to show how implementing eco-design processes into supply chain management can re-duce the impact of automotive industry on the environment by e.g. reducing the use of the fuel, in-creasing the use of recycled materials. Focus is on evaluation of current state, environmental impacts and potential improvements for design, raw materials, manufacturing and distribution and end-of-life phase. Keywords: eco-design processes, automotive industry, supply chain management, business processes, cleaner production, environmental impacts, logistics Published in DKUM: 18.12.2024; Views: 0; Downloads: 2
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10. The influence of negotiation approaches on supplier relationship management in Zimbabwe's fast-food industryPaul Mukucha, Felix Chari, Divaries Cosmas Jaravaza, Victor Shumba, 2024, original scientific article Abstract: Supplier Relationship Management (SRM) has become a cornerstone of business success since the transformation of the procurement function to supply chain management. Extant literature has documented various predictors of vibrant supplier relationships. However, missing in the extant literature is the potential of negotiation approaches to cultivation of healthy supplier relationships. This study therefore sought to determine the influence of negotiation approaches on SRM. A sample of 150 dyadic transactions in the fast-food restaurant industry was surveyed. The broad dichotomous categorisation of negotiation methods into distributive and integrative approaches was used. SRM was operationalised using dimensions such as commitment, trust, communication, adaptation, and satisfaction. After conducting a Multivariate Analysis of Variance (MANOVA) the results revealed that the distributive strategy was weakly linked to supplier relationship, while a strong supplier relationship was observed in the use of integrative negotiation strategy. It was therefore recommended that procurement practitioners must employ integrative negotiation strategies and tactics in order to create sustainable supplier relationship management. Keywords: distributive negotiation, integrative negotiation, supplier relationship management, fast-food industry Published in DKUM: 17.12.2024; Views: 0; Downloads: 2
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