1281. Comprehensive framework of sport events managementEdvard Kolar, Elnur E. Mammadov, 2025, original scientific article Abstract: Sports events are the main part of the organizational culture of sport with an impact on the promotion of the environ-ment in which they take place and also deve-lop tourism and other economies. The impacts of major sports events are a direct or indirect result of their management and organization and can be negative or positive. In accordance with this, the purpose of this article is to pre-sent the comprehensive conceptual framework (model) of the sports events management. To design the research, we used the methodology of writing a conceptual paper and the method approach called "model paper" which seeks to build a theoretical framework that predicts re-lationships that provides a bridge or connec-tion between different concepts and scientific disciplines. The developed conceptual frame-work presented in thisarticle comprehensively coverstheissueof management of major sports events and takes into account the specifics or characteristics of this type of project. The mu-tual coherence and connectivity of threemo-dels(strategic management models, projectmanagement methodology, sports event mana-gement theory and practice) define the general management model of a major sport events which holistically covers the problem of mana-gement of large sports events and provides the user of the framework with direct guidance on activities and requirements formanaging of this type of projects.
Keywords: major sport event, strategic management, project management, general framework, benefits of sport events
Published in DiRROS: 21.08.2025; Views: 328; Downloads: 158
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1282. Roman domination of cartesian bundles of cycles over cyclesSimon Brezovnik, Janez Žerovnik, 2025, original scientific article Abstract: A Roman dominating function $f$ of a graph $G(V, E)$ assigns labels from the set $\{0,1,2\}$ to vertices such that every vertex labeled $0$ has a neighbor labeled $2$. The weight of an RDF $f$ is defined as $w(f) = \sum_{v \in V} f(v)$, and the Roman domination number, $\gamma_R(G)$, is the minimum weight among all RDFs of $G$. This paper studies the domination and Roman domination numbers in Cartesian bundles of cycles. Furthermore, the constructed optimal patterns improve known bounds and suggest even better bounds might be achieved by combining patterns, especially for bundles involving shifts of order $4k$ and $5k$.
Keywords: Roman domination, domination, graph bundles, Roman graphs
Published in DiRROS: 21.08.2025; Views: 273; Downloads: 150
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1283. Edge-transitive cubic graphs: analysis, cataloguing and enumerationMarston D. E. Conder, Primož Potočnik, 2026, original scientific article Abstract: This paper deals with finite cubic (3-regular) graphs whose automorphism group acts transitively on the edges of the graph. Such graphs split into two broad classes, namely arc-transitive and semisymmetric cubic graphs, and then these divide respectively into 7 types (according to a classification by Djoković and Miller (1980) [17]) and 15 types (according to a classification by Goldschmidt (1980) [23]), in terms of certain group amalgams. Such graphs of small order were previously known up to orders 2048 and 768, respectively, and we have extended each of the two lists of all such graphs up to order 10000. Before describing how we did that, we carry out an analysis of the 22 amalgams, to show which of the finitely-presented groups associated with the 15 Goldschmidt amalgams can be faithfully embedded in one or more of the other 21 (as subgroups of finite index), complementing what is already known about such embeddings of the 7 Djoković-Miller groups in each other. We also give an example of a graph of each of the 22 types, and in most cases, describe the smallest such graph, and we then use regular coverings to prove that there are infinitely many examples of each type. Finally, we discuss the asymptotic enumeration of the graph orders, proving that if $f_{\mathcal C}(n)$ is the number of cubic edge-transitive graphs of type ${\mathcal C}$ on at most $n$ vertices, then there exist positive real constants $a$ and $b$ and a positive integer $n_0$ such that $n^{a \log(n)} \le f_{\mathcal C}(n) \le n^{b \log(n)}$ for all $n\ge 0$.
Keywords: groups, graphs, symmetry, amalgams, cover
Published in DiRROS: 21.08.2025; Views: 260; Downloads: 133
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1284. Multiphase structure after heat treatment enables a superior strength-plasticity combination in Y-modified ADC12 aluminum alloysWeiye Chen, Linhao Liu, Lai Wei, Nan Jia, Guihong Geng, 2025, original scientific article Keywords: ADC12 aluminum alloy, Y-modification, T6 heat treatment, deep etching, mechanical properties, orthogonal analysis
Published in DiRROS: 20.08.2025; Views: 433; Downloads: 191
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1285. Research on reflection cracking characteristics of warm-mix recycled asphalt mortar under the effect of freeze-thaw cyclesJian Gao, Zhiqiang Liu, Chao Li, Lan Wang, Yudong Ma, 2025, original scientific article Keywords: warm-mix recycled asphalt mortar, freeze-thaw cycle, reflection cracking characteristics, digital image correlation technology, cracking damage factor
Published in DiRROS: 20.08.2025; Views: 405; Downloads: 193
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1286. Effect of catalyst support on dihydroeugenol hydrodeoxygenation on low cost FeNi catalyst to produce renewable alkane fuelZuzana Vajglová, Päivi Mäki-Arvela, Olha Yevdokimova, Mark Martinez-Klimov, Irina Simakova, Kari Eränen, Teija Tirri, Jessi E. S. van Hoeven, Anssi Peuronen, Matej Huš, Blaž Likozar, 2025, original scientific article Published in DiRROS: 20.08.2025; Views: 302; Downloads: 162
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1288. Merging heterogeneous graphitic carbon nitride photocatalysis with cobaloxime catalysis in uphill dehydrogenative synthesis of anilinesSonia Zoltowska, Stefano Mazzanti, Sara Stolfi, Jingsan Xu, Matej Huš, Ana Oberlintner, Matic Pavlin, Paolo Ghigna, Blaž Likozar, Piero Torelli, 2025, original scientific article Published in DiRROS: 20.08.2025; Views: 364; Downloads: 192
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