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Abstract: The recent energy crisis has once again confirmed that energy and resource efficiency, combined with the use of renewable-energy sources, must be the backbone of future sustainable development across all sectors. It is also clear that achieving climate neutrality by 2050, or sooner, will require new approaches. At the implementation level, the social, technical and financial realities of local energy projects demand solutions that appeal to a variety of stakeholders, including utilities, energy service companies, banks, and end users, who must collaborate to bring projects from the idea to a practical implementation. Presented here is a methodical approach to establishing advanced energy communities in complex urban environments and implementing advanced projects with a common energy infrastructure. The outcomes of the first use case clearly indicate that investing in an energy community is beneficial from multiple perspectives. Detailed simulations enabled an accurate assessment of additional renewable-energy potential, revealing that the company in question has the capacity to install another 11,000 kWp of PV in Ljubljana and other locations across Slovenia. This would increase the share of renewable energy in its total electricity consumption to 31 %, which is in line with the national target for 2030. In the second use case, a significant potential for utilizing excess heat from a data room was identified. An economic analysis showed that the excess-heat utilization project has a payback period of 2.5 years, a net present value of over EUR 47,000 and an internal rate of return of 40 %.
Keywords: energy communities, excess heat
Published in DiRROS: 24.09.2025; Views: 272; Downloads: 127
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Abstract: Understanding the molecular mechanisms behind plant response to stress can enhancebreeding strategies and help us design crop varieties with improved stress tolerance,yield, and quality. To investigate resource redistribution from growth- to defense-relatedprocesses in an essential tuber crop, potato, here we generate a large-scale compartmen-talized genome-scale metabolic model (GEM), potato-GEM. Apart from a large-scalereconstruction of primary metabolism, the model includes the full known potato sec-ondary metabolism, spanning over 566 reactions that facilitate the biosynthesis of 182distinct potato secondary metabolites. Constraint-based modeling identifies that theactivation of the largest amount of secondary (defense) pathways occurs at a decreaseof the relative growth rate of potato leaf, due to the costs incurred by defense. We thenobtain transcriptomics data from experiments exposing potato leaves to two bioticstress scenarios, a herbivore and a viral pathogen, and apply them as constraints toproduce condition-specific models. We show that these models recapitulate experimen-tally observed decreases in relative growth rates under treatment as well as changes inmetabolite levels between treatments, enabling us to pinpoint the metabolic rewiringunderlying growth–defense trade-offs. Potato- GEM thus presents a useful resource tostudy and broaden our understanding of potato and general plant defense responsesunder stress conditions.
Keywords: systems biology, constraint-based metabolic modeling, growth-defence trade-offs, secondary metabolism
Published in DiRROS: 24.09.2025; Views: 349; Downloads: 136
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Abstract: A walk $W=w_1w_2\dots w_k$, $k\geq 2$, is called a toll walk if $w_1\neq w_k$ and $w_2(w_{k-1})$ are the only neighbors of $w_1(w_k)$ on $W$ in a graph $G$. A toll walk interval $T(u,v)$, $u,v\in V(G)$, contains all the vertices that belong to a toll walk between $u$ and $v$. The toll walk intervals yield a toll walk transit function $T:V(G)\times V(G)\rightarrow 2^{V(G)}$. We represent several axioms that characterize the toll walk transit function among chordal graphs, trees, asteroidal triple-free graphs, Ptolemaic graphs, and distance hereditary graphs. We also show that the toll walk transit function can not be described in the language of first-order logic for an arbitrary graph.
Keywords: toll walk, transit function, axioms, chordal graphs, AT-free graphs, Ptolemaic graphs, distance-hereditary graphs
Published in DiRROS: 24.09.2025; Views: 223; Downloads: 116
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Keywords: mednarodne raziskave, nacionalna poročila
Published in DiRROS: 24.09.2025; Views: 291; Downloads: 93
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Abstract: Pričujoča monografija z naslovom »Raziskovanje v vzgoji in izobraževanju: Digitalizacija vzgoje in izobraževanja – priložnosti in pasti« se osredotoča na kompleksne spremembe, ki jih prinaša digitalizacija ter vključevanje digitalnih tehnologij v izobraževalne procese, ter ponuja različne razmisleke ter poglede na ta proces, saj razčlenjuje večplastne razsežnosti te spremembe in preučuje zapleteno mrežo politik, ki jo podpirajo. Sestavljena je iz dveh delov, od katerih je vsak posvečen samostojnemu, a kljub temu prepletenemu vidiku te digitalne preobrazbe.
Keywords: digitalna tehnologija, digitalizacija v izobraževanju
Published in DiRROS: 24.09.2025; Views: 351; Downloads: 174
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