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1.
Sensitivity to keV-MeV dark matter from cosmic-ray scattering with current and the upcoming ground-based arrays CTA and SWGO
Igor Reis, Saptashwa Bhattacharyya, Judit Pérez Romero, Samo Stanič, Veronika Vodeb, Serguei Vorobiov, Danilo Zavrtanik, Marko Zavrtanik, Miha Živec, 2023, objavljeni znanstveni prispevek na konferenci

Opis: A wealth of astrophysical and cosmological observational evidence shows that the matter content of the universe is made of about 85% of non-baryonic dark matter. Huge experimental efforts have been deployed to look for the direct detection of dark matter via their scattering on target nucleons, their production in colliders, and their indirect detection via their annihilation products. Inelastic scattering of high-energy cosmic rays off dark matter particles populating the Milky Way halo would produce secondary gamma rays in the final state from the decay of the neutral pions produced in such interactions, providing a new avenue to probe dark matter properties. We compute here the sensitivity for H.E.S.S.-like observatory, a current-generation ground-based Cherenkov telescopes, to the expected gamma-ray flux from collisions of Galactic cosmic rays and dark matter in the center of the Milky Way. We also derive sensitivity prospects for the upcoming Cherenkov Telescope Array (CTA) and Southern Wide-field Gamma-ray Observatory (SWGO). The expected sensitivity allows us to probe a poorly-constrained range of dark matter masses so far, ranging from keV to sub-GeV, and provide complementary constraints on the dark matter-proton scattering cross section traditionally probed by deep underground direct dark matter experiments.
Ključne besede: Cherenkov Telescope Array, CTA, very-high-energy gamma-ray astroparticle physics, instrument response functions, machine learning
Objavljeno v RUNG: 26.09.2023; Ogledov: 527; Prenosov: 6
.pdf Celotno besedilo (713,85 KB)
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Kako se duševne motnje prikazujejo v animacijah studiev Disney in Pixar
Katarina Brglez, 2023, diplomsko delo

Opis: Čeprav se ne zavedamo, so duševne motnje zelo pogosto prisotne v človekovem življenju; z njimi se morda soočamo sami ali naši bližnji, prav tako pa so velikokrat upodobljene tudi skozi like, ki jih srečujemo v umetnosti, filmih in celo animiranih filmih, ki so ustvarjeni za mlajše občinstvo. Diplomsko delo raziskuje pojav duševnih motenj, prisotnih v Disneyjevih in Pixarjevih animiranih filmih. Bolj natančno preiskuje animirane like in kako njihovo vedenje, govor ter telesna govorica prikazujejo različne znake in simptome duševnih motenj. Prvi del diplomskega dela se posveča klasifikaciji in razlagi posameznih duševnih motenj. Namen je bralcu predstaviti in obrazložiti pojme, simptome in bolezni, da mu bo lažje razumljiv drugi del diplomskega dela ter da razume obseg duševnih motenj. Temu sledi analiza likov iz animiranih filmov Vrvež v moji glavi (Inside out, 2015), Iskanje malega Nema (Finding Nemo, 2003), Alica v čudežni deželi (Alice in Wonderland, 1951), Mnoge dogodivščine medvedka Puja (The Many Adventures of Winnie the Pooh, 1977), Ledeno kraljestvo (Frozen, 2013), Mala morska deklica (The Little Mermaid, 1989), Sneguljčica in sedem palčkov (Snow White and the Seven dwarfs, 1937) in Zlatolaska (Tangled, 2010). Praktični del diplomskega dela Pustite mi dihati je 2D-računalniška animacija, ki se posveča občutkom in počutju osebe z duševnimi motnjami. Skozi abstraktno animacijo si lahko gledalec sam razlaga pomen ter občutke depresije in tesnobe.
Ključne besede: duševne motnje, Disney, Pixar, animacija, 2D-animacija, 3D-animacija, depresija, tesnoba, manija, amnezija, motnje, shizofrenija, depersonalizacija, hiperaktivnost, avtizem, narcisizem, bipolarnost.
Objavljeno v RUNG: 23.03.2023; Ogledov: 964; Prenosov: 44
.pdf Celotno besedilo (2,54 MB)
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4.
Composites of transition metal dichalcogenides and topological insulators as a new class of catalytic materials
Jelena Rmuš, Blaž Belec, Igor Milanović, Mattia Fanetti, Sandra Gardonio, Matjaž Valant, Sandra V. Kurko, 2022, objavljeni povzetek znanstvenega prispevka na konferenci

Ključne besede: composites, topological insulators
Objavljeno v RUNG: 13.02.2023; Ogledov: 904; Prenosov: 0
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5.
Učinek srhljive doline v animaciji
Katja Pivk, 2022, diplomsko delo

Opis: Kaj je resnično in kaj ne, kaj nam je lepo in kaj grdo, kaj je preveč in kaj premalo? Vse to so vprašanja, ki si jih zastavlja človek že od samega začetka. Naj bo to v načinu življenja, vizualni podobi, elektronskih virih in nenazadnje tudi v industriji zabave – filmu ter animaciji. Diplomsko delo se posveča pojavom srhljive doline (ang. Uncanny Valley) predvsem v animaciji. Anima pomeni v latinščini »duša«, animare pa »vdihniti dušo«. Preverili bomo, kaj definira fenomen srhljive doline, zakaj do njega sploh pride ter kako se mu izogniti, če je to sploh mogoče. Glede na prej zastavljena vprašanja bomo v pregled vzeli svetovno znane animacijske studie (Pixar, DreamWorks, Illumination, Disney) ter raziskali, kako se s tem fenomenom spopadajo oziroma kako ga zaobidejo in se mu izognejo. S pomočjo analiz starejših in novejših filmov igrano-animirane zvrsti bomo na koncu diplomskega dela lažje sledili razvojni poti zajčice Juno, ene izmed likov v kratkem diplomskem igranem filmu s stop animacijo z naslovom Ti.
Ključne besede: film, lik, animacija, premikanje, srhljiva dolina
Objavljeno v RUNG: 19.12.2022; Ogledov: 1144; Prenosov: 38
.pdf Celotno besedilo (3,05 MB)
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Modeliranje dinamičnih sistemov z umetnimi nevronskimi mrežami in sorodnimi metodami
Juš Kocijan, 2007, univerzitetni, visokošolski ali višješolski učbenik z recenzijo

Ključne besede: umetne nevronske mreže, dinamični sistemi, modeliranje, učbeniki
Objavljeno v RUNG: 25.04.2022; Ogledov: 1406; Prenosov: 0

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Characterization of a karst aquifer in the recharge area of Malenščica and Unica springs based on spatial and temporal variations of natural tracers
Blaž Kogovšek, 2022, doktorska disertacija

Opis: The aim of the present study is to characterize and improve the still insufficient knowledge of the recharge processes that have an important influence on the flow and solute transport in karst aquifers and thus also on the quantity and quality of karst water sources. A binary karst aquifer in the recharge area of the Malenščica and Unica springs, which covers an area of about 820 km2 in SW Slovenia, was selected as the study area. A dense monitoring network was established at 20 observation points (six springs, four ponors, seven water-active caves and three surface streams) for simultaneous monitoring of the hydrological characteristics and the physicochemical properties of the water, the so-called natural tracers. Data-loggers were installed to measure water pressure, temperature and conductivity. During selected storm events, samples were taken for chemical and microbiological analyses and discharge measurements were made. The meteorological and hydrological data of the Slovenian Environment Agency complemented the extensive dataset. Collected data allowed the analysis and comparison of the spatial and temporal variations of the natural tracers under different hydrological conditions. Frequent discharge measurements allowed the generation of rating curves and proved to be a crucial element for understanding the hydraulic processes that determine the functioning of this system. The calculation of the water budget allowed an assessment of the proportion of autogenic and allogenic recharge of the springs and a quantitative estimate of autogenic recharge under different hydrological conditions. The hydrological analysis, i.e. the flow duration curve, the hydrograph separation techniques and the recession analysis, revealed that the Malenščica spring has a higher storage capacity, a greater proportion of autogenic recharge, especially at low-flow, and a slower recession than the Unica spring. This was also confirmed by correlation and spectral analyses, which were also used to investigate the relationships between discharges at ponors and springs. However, the results of the cross-correlation analysis showed hardly any difference between the two springs and in this case proved to be unsuitable for studying the influence of allogenic recharge. Instead, partial cross-correlation analysis was used to control the input parameters of effective precipitation and discharge of one of the sinking streams to determine the contribution of the other sinking stream to the observed spring. The results confirmed differences in allogenic recharge of the Unica and Malenščica springs. Hysteresis analysis has been applied as a complementary method to time series analysis and represents an improved approach to the characterization of the karst hydrological system. The hydraulic approach to the construction of hysteresis enabled a detailed analysis of allogenic and autogenic water interaction and its influence on the Malenščica and Unica springs under different hydrological conditions. Narrow shapes of the hysteresis indicate a direct hydraulic connection between the ponor and the spring and thus a well-developed drainage system. Any deviation towards a convex or concave shape indicates a less developed, more matrix-related drainage system or the influence of other recharge sources. Analysis of physicochemical hysteretic function of individual locations confirmed the differences in the recharge characteristics of the two springs. Compared to the Unica spring, the Malenščica spring has specific recharge characteristics that result in lower vulnerability to the effects of the sinking streams. A greater proportion of autogenic recharge in the initial phase of the storm event is important, as it allows for a time delay of the possible negative effects of the sinking stream. However, possible pollution from the area of autogenic recharge can have strong negative effects, as in this initial phase with low discharges the dilution effect is negligible.
Ključne besede: karst aquifer, dynamics of natural tracers, storm events, discharge measurements, time series analysis, hysteresis, Unica spring, Malenščica spring
Objavljeno v RUNG: 01.03.2022; Ogledov: 2078; Prenosov: 94
.pdf Celotno besedilo (18,38 MB)

10.
Igor Pison : ODPRTO ZA SREČANJA
2018, radijska ali televizijska oddaja, podkast, intervju, novinarska konferenca

Ključne besede: dramatika, režiserji, Trst, intervjuji
Objavljeno v RUNG: 08.11.2021; Ogledov: 1403; Prenosov: 42
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