811. Modeling hydrological functioning of karst aquifer systems in Slovenia using geomorphological features and random forest algorithmMitja Janža, Valter Hudovernik, Luka Serianz, Andrej Stroj, 2025, original scientific article Abstract: Study region: Slovenia
Study focus: This study investigates the relationship between the hydrological functioning of karst aquifer systems and the geomorphological characteristics of their catchments. It is based on the analysis of discharge time series from 15 karst springs. Hydrograph analysis of these time series was used to estimate 11 hydrological parameters that characterize aquifer system functioning. A spatial analysis of morphological, geological, and hydrological data was carried out to assess 7 lumped geomorphological features of the catchments. These features (independent variables) and hydrological parameters (dependent variables) were used to develop random forest models for predicting the hydrological functioning of karst springs.
New hydrological insights for the region: The developed methodological approach provides a basis for improved characterization and prediction of the hydrological functioning of ungauged karst systems. Groundwater availability in these systems is largely controlled by aquifer retention capacity and spring discharge variability. These characteristics can be inferred from hydrological parameters that can be predicted using the developed random forest models. Feature importance analysis indicated that catchment area, cave density, and slope gradient are the most important geomorphological features for predicting the hydrological characteristics of spring discharge.
Keywords: karst aquifer, random forest, machine learning, ungauged catchment, spring discharge, recession curve analysis
Published in DiRROS: 22.10.2025; Views: 198; Downloads: 125
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812. Anksioznost skozi oči mladostnikov in mladostnic : participativni pristop k razvoju digitalnega programa za krepitev duševnega zdravja mladihMaša Vidmar, Manja Veldin, Igor Peras, 2025, independent scientific component part or a chapter in a monograph Keywords: vzgoja in izobraževanje, anksioznost, duševno zdravje, mladi, digitalni program, participativni pristop, razvoj programa
Published in DiRROS: 22.10.2025; Views: 205; Downloads: 74
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815. Usposabljanje učiteljev za umetno inteligenco : vloga pričakovanj pri zadovoljstvu in angažiranosti v okviru projekta AI4TSimona Bezjak, Borut Čampelj, Petra Bevek, 2025, independent scientific component part or a chapter in a monograph Keywords: vzgoja in izobraževanje, umetna inteligenca v izobraževanju, usposabljanje učiteljev, pričakovanja učiteljev, percepcije učiteljev, pedagoške strategije za UI
Published in DiRROS: 22.10.2025; Views: 180; Downloads: 50
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816. Cross-situational learning of sign-like gestures in children and adults : a behavioural and event-related potential studyArianna Colombani, Peter Varghese, Qian Yin Mai, Amanda Saksida, Natalie Boll-Avetisyan, Outi Tuomainen, Mridula Sharma, 2025, original scientific article Keywords: pseudosigns, sign-like gestures, statistical learning, cross-situational learning, N400, LPC, semantic categorisation, associative learning
Published in DiRROS: 22.10.2025; Views: 175; Downloads: 94
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817. Is pupil response to speech and music in toddlers with cochlear implants asymmetric?Amanda Saksida, Marta Fantoni, Sara Ghiselli, Eva Orzan, 2025, original scientific article Keywords: ear advantage, cochlear implants, toddlers, pupillometry, listening efort, speech perception, music perception, auditory lateralization
Published in DiRROS: 22.10.2025; Views: 211; Downloads: 88
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820. Parallels between quaternionic and matrix NullstellensätzeJaka Cimprič, 2025, original scientific article Abstract: We prove a new quaternionic and a new matrix Nullstellensatz. We also show that both theories are intertwined. For every $g_1, \ldots, g_m, f \in {\mathbb H}[x_1, \ldots, x_d]$ (where $x_1, \ldots, x_d$ are central), we show that the following are equivalent: (a) For every $a \in {\mathbb H}^d$ whose components pairwise commute and which satisfies $g_1(a) = \cdots = g_m(a) = 0$, we have $f(a) = 0$. (b) $f$ belongs to the smallest semiprime left ideal containing $g_1, \ldots, g_m$. On the other hand, for every $G_1, \ldots, G_m, F \in M_n({\mathbb k}[x_1, \ldots, x_d])$, where ${\mathbb k}$ is an algebraically closed field, we show that the following are equivalent (where $I$ is the left ideal generated by $G_1, \ldots, G_m$): (a) For every $a \in {\mathbb k}^d$ and $v \in {\mathbb k}^n$ such that $G_1(a)v = \ldots = G_m(a)v = 0,$ we have $F(a)v = 0$. (b) For every $A \in M_n({\mathbb k})$ there exists $N \in \mathbb{N}_0$ such that $(AF)^N \in I + I(AF) + \ldots + I(AF)^N.$
Keywords: Hilbert's Nullstellensatz, matrix polynomials, quaternionic polynomials, one-sided ideals, free modules
Published in DiRROS: 21.10.2025; Views: 145; Downloads: 79
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