291. Iterative construction of conserved quantities in dissipative nearly integrable systemsIris Ulčakar, Zala Lenarčič, 2024, izvirni znanstveni članek Povzetek: Integrable systems offer rare examples of solvable many-body problems in the quantum world. Because of the fine-tuned structure, their realization in nature and experiment is never completely accurate, and therefore effects of integrability are observed only transiently. One way to overcome this limitation is to weakly couple nearly integrable systems to baths and driving: this will stabilize integrable effects up to arbitrary time and encode them in the stationary state approximated by a generalized Gibbs ensemble. However, the description of such driven dissipative nearly integrable models is challenging and no exact analytical methods have been proposed so far. Here, we develop an iterative scheme in which integrability breaking perturbations (baths) determine the conserved quantities that play the leading role in a highly efficient truncated generalized Gibbs ensemble description. Our scheme paves the way for easier calculations in thermodynamically large systems and can be used to construct unknown conserved quantities.
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292. The influence of health claims and nutritional composition on consumers' yoghurt preferencesKrista Miklavec, Igor Pravst, Klaus G. Grunert, Marija Klopčič, Jurij Pohar, 2015, izvirni znanstveni članek Ključne besede: health claims, biotin, probiotics, conjoint analysis, cluster analysis
Objavljeno v DiRROS: 28.11.2025; Ogledov: 171; Prenosov: 82
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293. PV-related rooftop fires – national statistics and the impact of reporting methodsNik Rus, Vincenzo Puccia, Aleš Jug, Grunde Jomaas, 2025, objavljeni znanstveni prispevek na konferenci Povzetek: PV-related fires have caused significant property damage over the last decade, and their numbers are still rising, thus potentially undermining solar power's intended contributions towards sustainability. Robust solutions are needed to ensure risk reduction, and incident reporting is an important part of the risk analysis process. Statistics on the adverse events provide a good insight into the more prevalent failure modes and establish the failure frequency. An assessment of the data on PV-related fires shows that Italy can expect about 10 fires per GW annually, while Slovenia can expect about 37 fires per GW annually, compared to a previously established number for an international average of 29 fires per GW. Although the rates for both countries are in the same order of magnitude as the international average, the differences can be attributed to different methods of data collection, as well as to some differences in legislation and installation requirements in the two countries. Importantly, while acceptable risk levels are typically in the order of 10⁻⁶, the observed rates are in the order of 10⁻⁴, which is in a range that demands immediate risk management actions.
Ključne besede: fire safety, photovoltaic systems, statistics
Objavljeno v DiRROS: 28.11.2025; Ogledov: 141; Prenosov: 100
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298. Principles for the fire performance of external wall systemsAndrea Lucherini, Rauan Adikey, Grunde Jomaas, Jose L. Torero, 2025, objavljeni znanstveni prispevek na konferenci Povzetek: Recent high-profile fires involving combustible façades have exposed significant gaps in both the understanding and regulation of external wall systems. Modern façade designs frequently employ polymers as insulation and/or laminated composite materials that, while improving energy efficiency, can inadvertently create pathways for vertical fire spread. Thus, there is a need to establish fundamental principles for evaluating the fire spread performance of these systems. Drawing on notable incidents, it is shown how uncontrolled flame spread can defeat compartmentation strategies, compromise occupant egress, and overwhelm firefighting efforts. Extending on previous studies, a performance-based approach to fire spread is proposed, examining four levels of relevance: material properties, product characteristics, assembly configuration, and overall building context. Key factors include combustibility, ventilation effects, and real-world variables (e.g., building characteristics). Case studies of testing methods illustrate both utility and limitations in capturing metrics relevant to façade design. Ultimately, it is advocated that there is an urgent need for rigorous, tailored assessment protocols supported by professional competence, thereby ensuring that complex external wall systems can be designed and managed to balance fire safety with sustainability and safety objectives.
Ključne besede: fire safety, facades, external wall systems, fire spread
Objavljeno v DiRROS: 28.11.2025; Ogledov: 85; Prenosov: 45
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