1. Analytical, numerical and experimental performance prediction of a model-sized wind turbineMatej Fike, Andrej Predin, Gorazd Hren, Marko Pezdevšek, 2024, izvirni znanstveni članek Opis: The present work focuses on the comparison of the capabilities of Blade Element Momentum Theory, with and without the high induction factor value model and Computational Fluid Dynamics modelling in relation to experimental measurements of the power coefficient for a model-sized horizontal axial wind turbine. Initially, an analytical investigation was performed to obtain the power coefficient curve. Furthermore, three-dimensional numerical simulations were performed, where a lot of effort was devoted to the preparation of a low y+ structured mesh. Analytical and numerical results of the power coefficient were compared with experimental results, which were obtained with our own conducted experiments in the wind tunnel. The most significant conclusions are that the classic BEM method deviates from measured data in the entire range of tip speed ratios, the BEM method with Spera correction predicts a significantly better agreement with experimental measurements compared to the classic BEM method, especially the part where the power coefficient decreases and finally that CFD computations can accurately predict the performance of wind turbines and compute the flow around an aerofoil of the blade.
Ključne besede: BEM method, CFD, measurements, wind turbine
Objavljeno v DKUM: 06.11.2025; Ogledov: 0; Prenosov: 1
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4. Vpliv pronacije na razvoj poškodb tkiva zaradi tlaka pri bolnikih okuženih s sars-cov-2Mateja Krajnc, 2025, magistrsko delo Opis: Povzetek
Uvod: Covid-19 pogosto povzroči akutno respiratorno odpoved, zaradi česar številni bolniki potrebujejo mehansko ventilacijo in pronacijo. Pronacija izboljša oksigenacijo, vendar poveča tveganje za poškodbe tkiva zaradi tlaka, zlasti na sprednji strani telesa. Namen raziskave je bil analizirati vpliv trajanja pronacije, spola, starosti in indeksa telesne mase na pojav poškodb tkiva zaradi tlaka pri mehansko ventiliranih bolnikih s SARS-CoV-2.
Metode: Izvedli smo retrospektivno kvantitativno raziskavo na vzorcu 100 bolnikov, ki so bili med hospitalizacijo v enoti covid intenzivne terapije pronirani več kot 24 ur. Zbrani podatki so vključevali demografske značilnosti, trajanje pronacije, lokacijo in stopnjo poškodbe tkiva zaradi tlaka. Uporabljena je bila EPUAP klasifikacija. Analizo smo izvedli s statističnim programom SPSS.
Rezultati: Pri 79 % bolnikov smo zabeležili skupaj 184 poškodb tkiva zaradi tlaka, največ na obrazu in prsnem košu. Statistično značilno pogostejše so se poškodbe tkiva zaradi tlaka pojavile pri moških, bolnikih starejših od 60 let, z indeksom telesne mase več kot 28,4 kg/m² in pri dolgotrajni pronaciji (p < 0,05).
Razprava in zaključek: Vpliv pronacije na pojav poškodb tkiva zaradi tlaka je multifaktorski. Na rezultate vplivajo tako fiziološki kot organizacijski dejavniki. Izsledki potrjujejo potrebo po ustrezni zaščiti stičnih točk in individualnem pristopu.
Ključne besede: obračanje na trebuh, covid-19, poškodba zaradi pritiska
Objavljeno v DKUM: 27.10.2025; Ogledov: 0; Prenosov: 7
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5. The antimicrobial effect of various single-strain and multi-strain probiotics, dietary supplements or other beneficial microbes against common clinical wound pathogensSabina Fijan, Primož Kocbek, Andrej Steyer, Polona Maver Vodičar, Maja Strauss, 2022, izvirni znanstveni članek Opis: The skin is the largest organ in the human body and is colonized by a diverse microbiota that works in harmony to protect the skin. However, when skin damage occurs, the skin microbiota is also disrupted, and pathogens can invade the wound and cause infection. Probiotics or other beneficial microbes and their metabolites are one possible alternative treatment for combating skin pathogens via their antimicrobial effectiveness. The objective of our study was to evaluate the antimicrobial effect of seven multi-strain dietary supplements and eleven single-strain microbes that contain probiotics against 15 clinical wound pathogens using the agar spot assay, co-culturing assay, and agar well diffusion assay. We also conducted genera-specific and species-specific molecular methods to detect the DNA in the dietary supplements and single-strain beneficial microbes. We found that the multi-strain dietary supplements exhibited a statistically significant higher antagonistic effect against the challenge wound pathogens than the single-strain microbes and that lactobacilli-containing dietary supplements and single-strain microbes were significantly more efficient than the selected propionibacteria and bacilli. Differences in results between methods were also observed, possibly due to different mechanisms of action. Individual pathogens were susceptible to different dietary supplements or single-strain microbes. Perhaps an individual approach such as a ‘probiogram’ could be a possibility in the future as a method to find the most efficient targeted probiotic strains, cell-free supernatants, or neutralized cell-free supernatants that have the highest antagonistic effect against individual clinical wound pathogens.
Ključne besede: probiotics, beneficial microbes, wound pathogens, skin pathogens, agar spot, co-culturing, agar well diffusion, molecular methods, PCR
Objavljeno v DKUM: 23.10.2025; Ogledov: 0; Prenosov: 3
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6. Study of the in vitro antagonistic activity of various single-strain and multi-strain probiotics against Escherichia coliSabina Fijan, Dunja Šulc, Andrej Steyer, 2018, izvirni znanstveni članek Opis: Escherichia coli is an important commensal of our gut, however, many pathogenic strains exist, causing various severe infections in the gut or beyond. Due to several antibiotic resistance patterns of E. coli, research of alternative treatments or adjuvant therapy is important. One of these is the use of probiotics as antagonistic agents against E. coli. Most published studies investigate only one strain of E. coli and single-strain probiotics. The objectives of this study were to evaluate the antagonistic activity of selected single-strain and multi-strain probiotic supplements against selected clinical E. coli pathotypes using the in vitro agar spot test and the co-culturing method. Molecular methods were used to determine the presence of the genus lactobacilli and bifidobacteria as well as certain selected strains in the probiotic supplements. The agar-spot test showed that the multi-strain probiotics were more effective than the single-strain probiotics. On the other hand, the co-culturing method showed the opposite result, indicating that results are importantly influenced by the chosen method. The most effective single-strain probiotics against E. coli strains were Bifidobacterium animalis subsp. lactis BB-12 and Lactobacillus reuteri DSM 17938. The most effective multi-strain probiotics contained lactobacilli, bifidobacteria and enterococci strains, thus proving that most effective probiotics against E. coli strains are the lactic acid bacteria and bifidobacteria. The overall results from both in vitro tests reveal that all selected probiotics exhibited an antagonistic activity against all E. coli strains. From a public health perspective probiotics have thus proved to be successful in inhibiting the growth of E. coli and could therefore be used as adjuvant therapy or alternative therapy in E. coli infections.
Ključne besede: probiotic, Escherichia coli, antagonistic effect
Objavljeno v DKUM: 23.10.2025; Ogledov: 0; Prenosov: 6
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7. Cesar Karel I. Habsburški v češki zgodovinski perspektivi : magistrsko deloPeter Donko, 2025, magistrsko delo Opis: Karel I./IV. je prevzel vodenje habsburške monarhije ob koncu leta 1916 sredi vihre prve svetovne vojne. Kljub težavnim okoliščinam si je le malo ljudi predstavljalo konec države, ki je kmalu sledil. Obkrožen z vojnimi hujskači, nezmožen doseči mir ob vsesplošnem pomanjkanju, je mlad in neizkušen cesar, za katerega si ob njegovem rojstvu prav nihče ni predstavljal, da bo sedel na habsburškem prestolu. Soočiti se je moral z nacionalnimi nasprotji, ki so tlela v državi. Ker so bili Čehi eni najvidnejših nasprotnikov režima in del njih je kot prvi izražal zahteve po samostojni državi, je pomembno, da poznamo njihovo politično realnost in njihove narodne voditelje, ki so s svojimi dejanji prispevali delček, ki je vodil k razpadu Avstro-Ogrske in h Karlovemu osebnemu zatonu. Češka je pri raziskovanju cesarja Karla zanimiva tudi iz vidika, da je tam avstrijski cesar in ogrski kralj preživel lep del mladosti, hkrati pa je govoril tudi češki jezik. Od priljubljenega meščana do osovraženega monarha je bila usoda Karla, ki jo bomo spremljali skozi dela čeških zgodovinarjev in čeških političnih časnikov. Osredotočil se bom na dojemanje Karla in drugih ključnih dogodkov ob nastanku prve češkoslovaške republike. Dalje je Karel v obupu poskušal z restavracijo monarhije na Madžarskem, kjer pa je prav Češkoslovaška bila ena izmed glavnih nasprotnic, pripravljenih tudi vojaško posredovati za to, da Habsburžan ne bi nikoli več sedel na ogrski prestol. Poleg tega bom analiziral reakcije čeških časnikov na Karlovo mnogo prezgodnjo smrt.
Ključne besede: Karel I./IV., Habsburžani, Avstro-Ogrska, Češkoslovaška, prva svetovna vojna
Objavljeno v DKUM: 22.10.2025; Ogledov: 0; Prenosov: 11
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8. Integrating computer science and informatics education in primary schools : insights from a Slovenian professional development initiativeAndrej Flogie, Alenka Lipovec, Jakob Škrobar, 2025, izvirni znanstveni članek Opis: In this study, we present a professional development programme for teachers launched to introduce Computer Science and Informatics (CSI) in primary education in Slovenia. The study aims to examine which CSI core concepts teachers most frequently choose to integrate into their lessons when given the freedom to select the topics within the framework, and to explore how students engage with and respond to these activities, as reported in teachers’ reflections. This study is based on reflective feedback from forty-seven teachers from seven primary schools who implemented interdisciplinary lessons that integrate CSI content into existing primary school curricula. Qualitative data from 152 reflections were used to support our research findings. The results show that teachers most frequently introduced the concepts from the content area of algorithms and programming. In contrast, content areas such as computing systems, networks and the internet, data and analysis, and impacts of computing received less attention. Teachers reported that students were motivated and engaged, although some challenges emerged, including difficulties in solving tasks or following instructions. As this pilot study reports on the first year of a two-year initiative, the findings provide preliminary insights into how a structured professional development programme for teachers can support interdisciplinary approaches in CSI education.
Ključne besede: computer science education, computational thinking, STEM, professional development, engagement, motivation, primary schools
Objavljeno v DKUM: 20.10.2025; Ogledov: 0; Prenosov: 4
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9. Pomen taborništva v nacionalnovarnostnem sistemu Republike Slovenije : diplomsko delo univerzitetnega študijskega programa VarstvoslovjeAnja Antončič, 2025, diplomsko delo Opis: V diplomskem delu je obravnavana vloga taborništva v nacionalnovarnostnem sistemu Republike Slovenije. Poudarek je namenjen analizi vključevanja Zveze tabornikov Slovenije (ZTS) v sistem zaščite, reševanja in pomoči ter raziskavi njenega formalnega in dejanskega prispevka k obvladovanju kriznih razmer. Ugotovitve so pridobljene z uporabo kombinacije kvalitativnih in kvantitativnih metod, vključno z analizo dokumentov in intervjuji. Ugotovljeno je, da ZTS razpolaga s specializiranimi enotami, ki so bile usposobljene za izvajanje različnih operativnih nalog, kot so postavljanje zasilnih prebivališč, logistična podpora in krizno odzivanje. Taborniki so bili v preteklosti aktivno vključeni v intervencije ob naravnih nesrečah, kar je bilo prepoznano kot pomemben prispevek k odpornosti lokalnih skupnosti. Njihove kompetence, kot so organizacija, timsko delo, krizno komuniciranje in prilagodljivost, so ocenjene kot ključne za delovanje v izrednih razmerah. Kljub formalni možnosti vključevanja taborniških organizacij v nacionalnovarnostni sistem je ugotovljeno, da vloga tabornikov še ni zadostno prepoznana, kar odpira možnosti za nadgradnjo obstoječih sodelovalnih mehanizmov. Predlagane so izboljšave, ki vključujejo okrepljeno sodelovanje z državnimi strukturami, večjo formalizacijo vloge taborniških organizacij, skupna usposabljanja ter dolgoročno podporo pri razvoju zmogljivosti. Taborniki so prepoznani kot pomemben dejavnik pri razvoju varnostne kulture, krepitvi družbene odpornosti in dolgoročni stabilnosti varnostnega sistema Republike Slovenije.
Ključne besede: taborništvo, sodelovanje, diplomske naloge
Objavljeno v DKUM: 17.10.2025; Ogledov: 0; Prenosov: 15
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10. Hibridni priporočilni sistem za izposojo knjig v sistemu COBISSRene Svenšek, 2025, magistrsko delo Opis: V magistrskem delu obravnavamo razvoj in primerjavo različnih pristopov priporočilnih sistemov na področju knjižničnih sistemov. Najprej so predstavljeni teoretična izhodišča, uporabljene tehnologije in obdelava podatkov, ki so služili kot podlaga za implementacijo. V nadaljevanju so razviti in analizirani štirje pristopi: sodelovalno filtriranje, vsebinsko filtriranje ter mešani in kaskadni hibridni pristop. Eksperimentalni del temelji na vrednotenju z uporabo metrik HR@K, MRR@K in NDCG@K. Rezultati kažejo, da hibridni pristopi presegajo osnovne metode. Med njimi se je kot najbolj učinkovit izkazal kaskadni hibridni model, ki najbolje združuje prednosti obeh osnovnih tehnik in se prilagaja značilnostim knjižničnih podatkov.
Ključne besede: hibridni priporočilni sistem, knjižnični sistem, sodelovalno filtriranje, vsebinsko filtriranje, obdelava naravnega jezika
Objavljeno v DKUM: 17.10.2025; Ogledov: 0; Prenosov: 13
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