1. Primerjava med 1d in 3d cfd numerično simulacijo motornega prostora delovnega stroja : diplomsko deloTomaž Rejc Zagožen, 2024, diplomsko delo Opis: Namen zaključnega dela je primerjava med 1D in 3D CFD numerično simulacijo kompleksnega motornega prostora delovnega stroja. Zanima nas, ali je 1D CFD simulacija smiselna in dovolj natančna za nadaljni razvoj hladilnega sistema. CAD model delovnega stroja je bil uvožen v GEM3D ter primerno obdelan za izvoz v 1D model. 1D model je bil izdelan in simuliran v programski opremi GT-SUITE.
Končna ugotovitev je, da trenutno GT-SUITE še ne premore obdelovati tako kompleksnih modelov, vendar ima zelo dobro podlago za obdelavo modelov v začetni fazi razvoja modela.
Ključne besede: motorni prostor, delovni stroj, 1D CFD, primerjava med 1D in 3D CFD simulacijo, GT-SUITE, GEM3D, GT-ISE, CFD, 1D model, 3D model, numerična simulacija
Objavljeno v DKUM: 06.05.2025; Ogledov: 0; Prenosov: 2
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2. Moški zbori čeških skladateljev v reviji Novi akordi : magistrsko deloAjda Tušar, 2025, magistrsko delo Opis: V magistrskem delu z naslovom Moški zbori čeških skladateljev v reviji Novi akordi je povzet zgodovinski razvoj moškega petja in glasbenih revij na slovenskih tleh. Podrobneje sta predstavljena ena najpomembnejših glasbenih revij na Slovenskem, z naslovom Novi akordi in njen urednik Gojmir (Gregor) Krek. Ob tem je izpostavljen tudi dvomesečnik za vokalno in inštrumentalno glasbo, ki se je imenoval Nova muzika in predstavlja neke vrste nasledstvo revije Novi akordi. Za lažjo predstavo je v magistrsko delo vključen seznam vseh skladb za moške zbore, ki so bile objavljene tekom izhajanja revije Novi akordi, torej med letoma 1901 in 1914. V osrednjem delu so predstavljeni trije češki skladatelji (Anton Foerster, Vítězslav Novák in Josip Procházka) ter njihove skladbe za moške zbore, objavljene v reviji Novi akordi. V magistrsko delo je vključena tudi podrobnejša analiza vseh osmih skladb za moške zbore omenjenih treh skladateljev (Povejte ve planine!, Spomen-pjesma, V brezupnosti, Bi mirna noć, Himna, Moravska narodna, Vabilo, Zaprto srce!), ki so v Novih akordih izšle med letoma 1901 in 1905.
Ključne besede: moški zbori, revija Novi akordi, Gojmir (Gregor) Krek, češki skladatelji, Anton Foerster, Vítězslav Novák, Josip Procházka
Objavljeno v DKUM: 25.04.2025; Ogledov: 0; Prenosov: 1
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3. Leveraging grammarware for active video game developmentMatej Črepinšek, Tomaž Kosar, Matej Moravec, Miha Ravber, Marjan Mernik, 2025, izvirni znanstveni članek Opis: This paper presents a grammarware-based approach to developing active video games (AVGs) for sensor-driven training systems. The GCGame domain-specific language (DSL) is introduced to define game logic, sensor interactions, and timing behavior formally. This approach ensures cross-platform consistency, supports real-time configurability, and simplifies the integration of optimization and visualization tools. The presented system, called GCBLE, serves as a case study, demonstrating how grammarware enhances modularity, maintainability, and adaptability in real-world physical interaction applications. The results highlight the potential of a DSL-driven design to bridge the gap between developers and domain experts in embedded interactive systems
Ključne besede: active video games, grammarware, internet of things, DSL, procedural level generation, evolutionary computation, game controllers
Objavljeno v DKUM: 23.04.2025; Ogledov: 0; Prenosov: 1
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4. Overview of communication activities and a plan to improve public perception of food additivesAna Starman, Elizabeta Mičović, Tomaž Langerholc, 2023, izvirni znanstveni članek Opis: Food additives are considered a high-risk factor by the EU and Slovenian consumers, although they are strictly regulated by the authorities and pose a low risk to consumers. However, risk communication about food additives is challenging and involves the interactive exchange of information about hazards, taking into account the risk perception of the target groups. A plan for communication activities aimed at improving public perception of food additives was structured based on the review of scientific literature and the overview of previous communication efforts communicated by various information sources to raise awareness among the Slovenian public from January 2015 to January 2022. The overview included governmental and nongovernmental organizations that are credible sources of information on food safety for Slovenian consumers at the national and EU level. The objective was to develop an effective communication plan on food additives with defined objectives, target groups, key communication messages, communication activities, tools, and channels. The proposed plan can serve as a good basis for launching an effective awareness campaign on food additives to reduce public concern and improve the knowledge of average
consumers about the use of additives in food.
Ključne besede: food additives, risk communication, risk perception, consumers, communication plan
Objavljeno v DKUM: 23.04.2025; Ogledov: 0; Prenosov: 0
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5. Uporaba namenskega čipa za izvajanje elektrospektroskopije pri določanju različnih stanj SoX litij-ionskih baterijskih celic : magistrsko deloDenis Batiuk, 2025, magistrsko delo Opis: Litij-ionske baterije, zaradi svojih ugodnih karakteristik, kot so visoka energijska gostota, dolga življenjska doba in visoka učinkovitost, danes predstavljajo standardno tehnologijo za tovrstne aplikacije – od prenosnih elektronskih naprav do velikih omrežno povezanih shranjevalnikov energije.
Osrednji cilj magistrskega dela je raziskava zmogljivosti namenskega integriranega vezja za izvajanje elektrokemijske impedančne spektroskopije (EIS) kot orodja za ocenjevanje notranjih stanj litij-ionskih baterijskih celic, zlasti stanja napolnjenosti (SoC), stanja zdravja (SoH) in stanja moči (SoP). EIS je neinvazivna diagnostična metoda, ki omogoča analizo notranjih elektrokemijskih procesov v bateriji z merjenjem frekvenčno odvisne impedance. V kombinaciji z namenskim čipom, ki izvaja generacijo signalov, zajem podatkov ter analizo, ta pristop omogoča integracijo v realnočasovne sisteme za nadzor baterij (BMS).
Magistrsko delo vključuje razvoj in validacijo linearnega in dinamičnega modela litij-ionske baterijske celice v okolju MATLAB/Simulink, ki temelji na Theveninovem pristopu z več RC-členi. V eksperimentalnem delu so bile izvedene meritve z uporabo EIS ter izračun stanja napolnjenosti, pri čemer so rezultati primerjani z vrednostmi, pridobljenimi iz simulacijskega modela. Poseben poudarek je namenjen zanesljivosti meritev, natančnosti identifikacije parametrov nadomestnega vezja in možnostim praktične uporabe EIS čipa v kontekstu naprednega upravljanja baterijskih sistemov.
Rezultati raziskave prispevajo k razumevanju možnosti uporabe cenovno dostopnih in integriranih merilnih rešitev za poglobljeno karakterizacijo baterijskih celic ter potrjujejo uporabnost EIS za napredno diagnostiko in napovedovanje stanja baterije v realnih aplikacijah.
Ključne besede: impedančna elektrospektroskopija, razširjeni Kalmanov filter, stanje zdravja, stanje napolnjenosti, baterijski upravljalnik
Objavljeno v DKUM: 23.04.2025; Ogledov: 0; Prenosov: 16
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6. Specific fertilization practices reveal important insights into the complex interaction between microbes and enzymes in soils of different farming systemsMaša Pintarič, Ana Štuhec, Eva Tratnik, Tomaž Langerholc, 2024, izvirni znanstveni članek Opis: The interaction of microorganisms and their enzyme activity is one of the key indicators for a comprehensive measurement of soil health. The aim of this study was to determine significant correlations between different soil microorganisms and enzyme activities of β-glucosidase, N-acetyl-glucosaminidase, urease, arylamidase, phosphatase, acid phosphatase, alkaline phosphatase, and arylsulfatase after supplementation with standard fertilizer, spent mushroom substrate and composed fertilizer in soils from conventional–integrated, organic and biodynamic farming. Samples were grouped according to the farming system and fertilization for all seasons. The biodynamic farm was the least affected by the different fertilizations, except for standard fertilization. Standard fertilizer caused negative correlations between the actinomycetes and the arylsulfatase in organic and biodynamic farms. The same fertilization affected the actinomycetes/phosphatase relationship differently, regardless of the basic soil structure. Actinomycetes correlated positively with acid phosphatase and urease in conventional–integrated and biodynamic farms after spent mushroom substrate, respectively. Arylamidase activity in relation to total microorganisms responded to fertilization with standard fertilizer and spent mushroom substrate independently of the basic soil structure. Fertilization can influence the soil microbe/enzyme relationships in different soils. Regardless of the basic soil structure, some of these relationships could be important indicators for further studies.
Ključne besede: agriculture, conventional-integrated, organic, biodynamic, fertilization, soil microorganisms, soil enzyme activity
Objavljeno v DKUM: 17.04.2025; Ogledov: 0; Prenosov: 0
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7. Spent mushroom substrate improves microbial quantities and enzymatic activity in soils of different farming systemsMaša Pintarič, Ana Štuhec, Eva Tratnik, Tomaž Langerholc, 2024, izvirni znanstveni članek Ključne besede: conventional-integrated, organic, biodynamic, soil microorganisms, soil enzymatic activity, spent mushroom substrate
Objavljeno v DKUM: 17.04.2025; Ogledov: 0; Prenosov: 0
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8. Search for tetraquark states ▫$X_{c c \bar{s} \bar{s}}$▫ in ▫$D_s^+ D_s^+$▫ (▫$D_s^{\ast +} D_s^{\ast +}$▫) final states at BelleX. Y. Gao, Jyotirmoi Borah, Marko Bračko, Samo Korpar, Peter Križan, Rok Pestotnik, Tomaž Podobnik, Samo Stanič, Marko Starič, Luka Šantelj, Valentina Zhukova, 2022, izvirni znanstveni članek Opis: A search for double-heavy tetraquark state candidates Xccs¯s¯ decaying to Dþ s Dþ s and Dþ s Dþ s is presented for the first time using the data samples of 102 × 106 ϒð1SÞ and 158 × 106 ϒð2SÞ events, and the data samples at ffiffi ps ¼ 10.52, 10.58, and 10.867 GeV corresponding to integrated luminosities of 89.5, 711.0, and 121.4 fb−1, respectively, accumulated with the Belle detector at the KEKB asymmetric energy electron-positron collider. The invariant-mass spectra of the Dþ s Dþ s and Dþ s Dþ s are studied to search for possible resonances. No significant signals are observed, and the 90% confidence level upper limits on the product branching fractions [Bðϒð1S; 2SÞ → Xccs¯s¯ þ anythingÞ × BðXccs¯s¯ → Dþ s Dþ s ðDþ s Dþ s ÞÞ] in ϒð1S; 2SÞ inclusive decays and the product values of Born cross section and branching fraction [σðeþe− → Xccs¯s¯ þ anythingÞ × BðXccs¯s¯ → Dþ s Dþ s ðDþ s Dþ s ÞÞ] in eþe− collisions at pffiffis ¼ 10.52, 10.58, and 10.867 GeV under different assumptions of Xccs¯s¯ masses and widths are obtained.
Ključne besede: tetraquark states, final states at Belle
Objavljeno v DKUM: 15.04.2025; Ogledov: 0; Prenosov: 3
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9. Hybrid model for motorway EV fast-charging demand analysis based on traffic volumeBojan Rupnik, Yuhong Wang, Tomaž Kramberger, 2025, izvirni znanstveni članek Opis: The expected growth of electric vehicle (EV) usage will not only increase the energy demand but also bring the requirement to provide the necessary electrical infrastructure to handle the load. While charging infrastructure is becoming increasingly present in urban areas, special attention is required for transit traffic, not just for passengers but also for freight transport. Differences in the nature of battery charging compared to that of classical refueling require careful planning in order to provide a resilient electrical infrastructure that will supply enough energy at critical locations during peak hours. This paper presents a hybrid simulation model for analyzing fast-charging demand based on traffic flow, projected EV adoption, battery characteristics, and environmental conditions. The model integrates a probabilistic model for evaluating the charging requirements based on traffic flows with a discrete-event simulation (DES) framework to analyze charger utilization, waiting queues, and energy demand. The presented case of traffic flow on Slovenian motorways explored the expected power demands at various seasonal traffic intensities. The findings provide valuable insight for planning the charging infrastructure, the electrical grid, and also the layout by anticipating the number of vehicles seeking charging services. The modular design of the model allowed replacing key parameters with different traffic projections, supporting a robust scenario analysis and adaptive infrastructure planning. Replacing the parameters with real-time data opens the path for integration into a digital twin framework of individual EV charging hubs, providing the basis for development of an EV charging hub network digital twin.
Ključne besede: electric vehicles, EV charging, traffic flow, EV charging hub
Objavljeno v DKUM: 11.04.2025; Ogledov: 0; Prenosov: 2
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