Претрага
858 items
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Structural and microstructural study of brookite based TiO2 nanocomposites with carbon black (C)
Structural and microstructural properties of TiO2-based nanocomposites with carbon black (C), synthesized by sol-gel-hydrothermal method, have been studied by XRPD and Raman scattering. Detailed size-strain analyses of XRPD and Raman scattering results are presented in order to investigate the influence of C content on brokite and anatase phase formation. The XRPD size-strain analyses have resulted in reliable structure and microstructure results for both anatase and brookite and their relative abundance ratio has been refined by Rietveld method. The brookite ...Aleksandar Kremenović, Mirjana Grujić-Brojčin, Nataša Tomić, Maja Šćepanović. "Structural and microstructural study of brookite based TiO2 nanocomposites with carbon black (C)" in The European Powder Diffraction Conference (EPDIC) Book of Abstracts, Šibenik, 31 May - 3 June 2022, EPDIC (2022)
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Integrating landslide magnitude in the susceptibility assessment of the City of Doboj, using machine learning and heuristic approach
In this work, landslide assessment of the Doboj City area was modeled by combining machine learning and heuristic tools. The machine learning part was used to map the Morphometric factor. i.e. probability of landslides based on relation between the magnitude of events and morphometric parameters: elevation, distance to streams, slope, profile curvature, and aspect. The Random Forest and Support Vector Machines algorithms were implemented in the learning protocol, which included several strategies: balancing of the training/testing set size, algorithm ...Cvjetko Sandić, Miloš Marjanović, Biljana Abolmasov, Radislav Tošić. "Integrating landslide magnitude in the susceptibility assessment of the City of Doboj, using machine learning and heuristic approach" in Journal of Maps, Taylor&Francis (2023). https://doi.org/ 10.1080/17445647.2022.2163199
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Estimating hydraulic parameters for the complex hydrodynamic models
Hydrodynamic models have usually been calibrated manually, by trial-and-error, with different values of hydraulic parameters and hydraulic characteristics of boundary conditions. This method of calibration and estimation of hydraulic parameters requires an extensive knowledge and experience of experts, but whether the resulting solution includes an optimal set of parameters still remains an open question. An optimization method founded upon the Gauss-Marquardt-Levenberg algorithm, along with PEST software based on that algorithm, introduces automation of model calibration with regularization, which substantially ...Dušan Polomčić, Dragoljub Bajić, Jelena Ratković, Bojan Hajdin. "Estimating hydraulic parameters for the complex hydrodynamic models" in Mining and Metallurgy Engineering Bor, Centre for Evaluation in Education and Science (CEON/CEES) (2018). https://doi.org/10.5937/mmeb1704029P
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Navigacija budućnosti: poslovni rizici i prilike u rudarskoj industriji
Sektor rudarstva i metalurgije se globalno suočava sa brzo evoluirajućim okruženjem u 2024. godini, koje karakteriše jedinstvena međusobna zavisnost rizika i prilika. Sektor je u središtu globalne energetske tranzicije, uz rastuću potražnju za kritičnim mineralnim sirovinama poput litijuma, nikla i bakra, koji su od suštinskog značaja za tehnologije obnovljive energije i električna vozila. Međutim, ova sve veća odgovornost donosi brojne izazove, uključujući pojačanu pažnju na ekološke, društvene i upravljačke (ESG) faktore, fizičke i tranzicione rizike uzrokovane klimatskim promenama, i ...Petar Marković, Dejan Stevanović, Mirjana Banković, Vuk Lazić. "Navigacija budućnosti: poslovni rizici i prilike u rudarskoj industriji" in XVI međunarodna konferencija OMC 2024, Beograd : Jugoslovenski komitet za površinsku eksploataciju (2024)
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Digital Library From A Domain Of Criminalistics As A Foundation For A Forensic Text Analysis
U ovom radu predstavljen je model koji omogućava prikupljanje, pripremu, opis metapodataka, upravljanje i eksploataciju, uključujući pretragu punog teksta dokumenata iz domena kriminalistike napisanih na srpskom jeziku. Predloženi pristup primenjuje se na veb portalu koji sakuplja različite tekstove nastale iz časopisa Akademije za kriminalistiku i policijske studije, Krivičnog zakona Srbije, konferencija „Tara“ i „Reiss“, kao i iz nekih doktorskih disertacija vezanih za ovu oblast istraživanje. Nakon obrade teksta, korpus koji sadrži preko 5500 stranica običnog teksta, kreiran je i ...Dalibor Vorkapić, Aleksandra Tomašević, Miljana Mladenović, Ranka Stanković, Nikola Vulović. "Digital Library From A Domain Of Criminalistics As A Foundation For A Forensic Text Analysis" in International Scientific Conference “Archibald Reiss Days” Thematic Conference Proceedings Of International Significance, Belgrade, 7-9 November 2017, Academy Of Criminalistic And Police Studies Belgrade (2017)
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Izbor rotornih bagera za proces revitalizacije: primer rotornih bagera SRs 1200 u rudarskom basenu Kolubara
Predrag Jovančić, Dragan Ignjatović, Stevan Đenadić, Filip Miletić, Goran Todorović, Dragan Novaković (2020)Revitalizacija je proces ili skup tehničkih zahvata na mašini kojim se vrši zamena svih dotrajalih ili oštećenih delova metalne konstrukcije. Sastavni deo procesa revitalizacije je i modernizacija zastarele elektro-mašinske opreme. Principi revitalizacije sasvim sigurno nisu sadržani u okviru redovnog godišnjeg ili dnevnog održavanja. Oni predstavljaju održavanje onih veličina koje su značajne za mašinu kao celinu (u ovom slučaju rotorni bager). U ovom radu su analizirani rotorni bageri oznake SRs 1200. Na površinskim kopovima rudarskog basena Kolubara takvih bagera ima ...... 4. Primena višekriterijumskih metoda za rangiranje rotornih bagera Za potrebe kreiranja modela, u prvom koraku izračunate su sve neophodne numeričke vrednosti koje predstavljaju ulazne podatke modela. Naime, ulazne vrednosti izračunate su na osnovu podataka iz Tabela 2 i 3, a primenom jednačina ...
... Business Media: New York, NY, USA, 2012; Volume 175 [6] Mohamadibadi H. S., Tichkowsky G., Kumar A.: Development of a Multi-Criteria Assessment Model for Ranking of Renewable and Non-Renewable Transportation Fuel Vehicles. Energy 2009, 34, 112–125 [7] Tsaur R. C.: Decision risk analysis for an ...
... an interval TOPSIS method. Appl. Math. Comput. 2011, 218, 4295–4304 [8] Tavana M., Di Caprio D., Santos-Alteaga F.: An extended stochastic VIKOR model with decision maker’s attitude towards risk. Inf. Sci. 2018, 432, 301–318 [9] Govindan K., Jepsen M. B.: ELECTRE: A compehensive literature review ...Predrag Jovančić, Dragan Ignjatović, Stevan Đenadić, Filip Miletić, Goran Todorović, Dragan Novaković. "Izbor rotornih bagera za proces revitalizacije: primer rotornih bagera SRs 1200 u rudarskom basenu Kolubara" in XIV Međunarodna konferencija OMC 2020, Zlatibor, Srbija, 14-17. oktobar 2020., Jugoslovenski komitet za površinsku eksploataciju (2020)
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Termičke metode povećanja iskorišćenja naftnih ležišta
Vesna Karović Maričić (2019)Vesna Karović Maričić. Termičke metode povećanja iskorišćenja naftnih ležišta, Beograd : Univerzitet u Beogradu, Rudarsko-geološki fakultet, 2019
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Parallel Stylometric Document Embeddings with Deep Learning Based Language Models in Literary Authorship Attribution
This paper explores the effectiveness of parallel stylometric document embeddings in solving the authorship attribution task by testing a novel approach on literary texts in 7 different languages, totaling in 7051 unique 10,000-token chunks from 700 PoS and lemma annotated documents. We used these documents to produce four document embedding models using Stylo R package (word-based, lemma-based, PoS-trigrams-based, and PoS-mask-based) and one document embedding model using mBERT for each of the seven languages. We created further derivations of these ...Mihailo Škorić, Ranka Stanković, Milica Ikonić Nešić, Joanna Byszuk, Maciej Eder. "Parallel Stylometric Document Embeddings with Deep Learning Based Language Models in Literary Authorship Attribution" in Mathematics, MDPI AG (2022). https://doi.org/10.3390/math10050838
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Human Hemoglobin and Antipsychotics Clozapine, Ziprasidone and Sertindole: Friends or Foes?
Lena Platanić Arizanović, Nikola Gligorijević, Ilija Cvijetić, Aleksandar Mijatović, Maja Krstić Ristivojević, Simeon Minić, Aleksandra Nikolić Kokić, Čedo Miljević, Milan Nikolić (2023)Packed with hemoglobin, an essential protein for oxygen transport, human erythrocytes are a suitable model system for testing the pleiotropic effects of lipophilic drugs. Our study investi gated the interaction between antipsychotic drugs clozapine, ziprasidone, sertindole, and human hemoglobin under simulated physiological conditions. Analysis of protein fluorescence quenching at different temperatures and data obtained from the van’t Hoff diagram and molecular docking indicate that the interactions are static and that the tetrameric human hemoglobin has one binding site for ...Inorganic Chemistry, Organic Chemistry, Physical and Theoretical Chemistry, Computer Science Applications, Spectroscopy, Molecular Biology, General Medicine, CatalysisLena Platanić Arizanović, Nikola Gligorijević, Ilija Cvijetić, Aleksandar Mijatović, Maja Krstić Ristivojević, Simeon Minić, Aleksandra Nikolić Kokić, Čedo Miljević, Milan Nikolić. "Human Hemoglobin and Antipsychotics Clozapine, Ziprasidone and Sertindole: Friends or Foes?" in International Journal of Molecular Sciences, MDPI AG (2023). https://doi.org/10.3390/ijms24108921
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Using English Baits to Catch Serbian Multi-Word Terminology
In this paper we present the first results in bilingual terminology extraction. The hypothesis of our approach is that if for a source language domain terminology exists as well as a domain aligned corpus for a source and a target language, then it is possible to extract the terminology for a target language. Our approach relies on several resources and tools: aligned domain texts, domain terminology for a source language, a terminology extractor for a target language, and a ...aligned texts, word alignment, terminology extraction, electronic dictionaries, morphological inflectionCvetana Krstev, Branislava Šandrih, Ranka Stanković. "Using English Baits to Catch Serbian Multi-Word Terminology" in Proceedings of the 11th International Conference on Language Resources and Evaluation, LREC 2018, Miyazaki, Japan, May 7-12, 2018, European Language Resources Association (ELRA) (2018)
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Using Lexical Resources for Irony and Sarcasm Classification
The paper presents a language dependent model for classification of statements into ironic and non-ironic. The model uses various language resources: morphological dictionaries, sentiment lexicon, lexicon of markers and a WordNet based ontology. This approach uses various features: antonymous pairs obtained using the reasoning rules over the Serbian WordNet ontology (R), antonymous pairs in which one member has positive sentiment polarity (PPR), polarity of positive sentiment words (PSP), ordered sequence of sentiment tags (OSA), Part-of-Speech tags of words (POS) ...Miljana Mladenović, Cvetana Krstev, Jelena Mitrović, Ranka Stanković. "Using Lexical Resources for Irony and Sarcasm Classification" in Proceedings of the 8th Balkan Conference in Informatics (BCI '17), New York, NY, USA, : ACM (2017). https://doi.org/
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Remontni radovi u bušotini sa dubinskom pumpom
Jovana Milošević (2024)Remontni i stimulativni radovi u naftnom inženjerstvu su radovi koji se primenjuju na bušotinama koje su već u proizvodnji ili potencijalno proizvodnim bušotinama, i u zavisnosti od toga imaju različitu svrhu. Remontni radovi predstavljaju sve radove koji su ograničeni na kanal bušotine, dok se stimulativni radovi odnose pribušotinsku zonu.U prvom slučaju remontni i stimulativni radovi kod proizvodnih bušotina služe za otklanjanje problema i povećavanje proizvodnje bušotine. Dok u drugom slučaju, kod potencijalnih bušotina su ovi radovi namenjeni završnim obradama ...... upumpavanja i potrebne zapremine kiselinskog rastvora moraju da se prate u trenutku koriguju u skladu sa situacijom. Najjednostavniji model za projektovanje je zapreminski model, postoje nepravilni vijugavi kanali koji nastaju usled rastvaranja karbonatnih stena u kiselini. Brzina nastajanja tih kanala ...
... kapacitete. Jer sa nižim kapacitetom dobijamo sporiju višu temperaturu i brže odvijanje reakcije između dolomita i kiseline. Zapreminski model je empirijski model kojim se definiše potrebna zapremina rastvora da vijugavim kanalima što pre dopre do matriksa stene. Pri tome se pretpostavlja da kiselina ...
... za izvođenje radova su definisanje problematične bušotine, pronalaženje uzroka i rešavanja problema. Kako bi se to postiglo uveden je globalni model optimizacije remontnih i stimulativnih radova koji olakšava definisanje problema po matematičkim šablonima i povećava šansu za uspešnim remontom ...Jovana Milošević . Remontni radovi u bušotini sa dubinskom pumpom, 2024
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Why classical sequence stratigraphy doesn't work in Pannonian basin?
Dejan Radivojević (2018)Dejan Radivojević. "Why classical sequence stratigraphy doesn't work in Pannonian basin?" in 17th Serbian Geological Congress, Vrnjačka Banja, 17-20 maj 2018, Srpsko geološko društvo (2018)
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Pregled hidrogeoloških istraživanja novootkrivenih ležišta metaličnih mineralnih sirovina na prostoru Srbije
Nebojša Atanacković, Vladimir Živanović, Veselin Dragišić, Sava Magazinović, Jakov Andrijašević (2022)Rastuća potražnja za mineralnim sirovinama, zavisnost evropske industrije od njihovog uvoza, kao i otvaranje tržišta u zadnjih 20-ak godina bili su pokretač intenzivnih istraživanja ležišta mineralnih sirovina na području Srbije. Ova istraživanja za rezultat su imala otkriće važnih ležišta bora i litijuma „Jadar“ i „Valjevo“, sedimentnih ležišta zlata „Bigar i Korkan“ i bakra i zlata „Čukaru Peki“. Sastavni deo ovih aktivnosti, posebno u okviru značajnijih novootkrivenih metaličnih ležišta, bila je hidrogeološka karakterizacija ležišta i okolorudnih terena. U razmatranom periodu ...Nebojša Atanacković, Vladimir Živanović, Veselin Dragišić, Sava Magazinović, Jakov Andrijašević. "Pregled hidrogeoloških istraživanja novootkrivenih ležišta metaličnih mineralnih sirovina na prostoru Srbije" in Zbornik radova XVI srpskog Simpozijum o hidrogeologiji sa međunarodnim učešćem, Univerzitet u Beograd, Rudarsko-geološki fakultet (2022)
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Analiza hidrauličke veze između reke Save i podzemnih voda na izvorištu za vodosnabdevanje Obrenovca
Na izvorištu „Vić bare“ formiranom u aluvijonu Save za vodosnabdevanje Obrenovca u poslednje dve decenije izvedeno je više detaljnih hidrogeoloških istraživanja u cilju utvrđivanja rezervi podzemnih voda i izdvajanja zona sanintarne zaštite. Monitoring podzemnih voda u celoj zoni izvorišta, za potrebe izrade hidrodinamičkog modela, omogućio je i hidrauličku analizu odnosa površinskih voda reke Save i podzemnih voda na izvorištu sa kojeg se trenutno zahvata do 310 l/s vode. U radu su prikazani rezultati korelacione analize, odnosno ispitivanja na ...Dragoljub Bajić, Bojan Hajdin, Dušan Polomčić, Vesna Ristić Vakanjac. "Analiza hidrauličke veze između reke Save i podzemnih voda na izvorištu za vodosnabdevanje Obrenovca" in XVI Srpski simpozijum o hidrogeologiji sa međunarodnim učešćem, Zlatibor, 28.09.-02.10.2022., Beograd : Rudarsko-geološki fakultet (2022)
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Coal: exploration, reserves, and utilization
Dragana Životić, Gligor Jovanovski, Vladimir Simić, Ivan Boev, Vesna Cvetkov, Petre Makreski, Dušan Polomčić, Vesna Ristić Vakanjac (2024)Coal exploration is a very demanding task, highly dependent on geological and economic factors and the utilization of coal. This lecture text includes information on a variety of geological techniques used in the exploration of coal and coal-bearing sequences, as well as on the calculation, assessment, classification, and reporting of coal resources and reserves. The main features of coal utilization and some environmental aspects are explained briefly. Special attention is paid to the by-products of coal utilization, their uses, ...угаљ, истраживање, ресурси, резерве, коришћење, сагоревање, карбонизација, гасификација, угљенични материјали... starts from a known real physical model (the rock complex) and proceeds towards the unknown response of that model. This means that the physical properties, shape, and position in the sub- surface are known for the given model, and the response of that model is calculated, e.g., the response ...
... also produce three-dimensional data (3D reflective seismic, 3D electri- cal tomography). Likewise, a quasi-2D model can be con- structed by merging a series of 1D data, or a quasi-3D model by merging 2D data. In general, there are two basic principles of interpreta- tion and modeling of geophysical ...
... Paleozoic to recent times are foumn throughout the world. The origin of coal has been stud- 1ed for over a century, but no one has identified a model that can predict the occurrence, development, and type o: coal, or provide a satisfactory explanation for the cyclic nature of coal sequences ...Dragana Životić, Gligor Jovanovski, Vladimir Simić, Ivan Boev, Vesna Cvetkov, Petre Makreski, Dušan Polomčić, Vesna Ristić Vakanjac. "Coal: exploration, reserves, and utilization" in ChemTexts, Springer Science and Business Media LLC (2024). https://doi.org/10.1007/s40828-023-00186-5
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Football terminology: compilation and transformation into OntoLex-Lemon resource
У овом раду представља се пројекат који је у развоју, креирање првог дигиталног фудбалског речника на српском језику, као и да демонстрација примене модела OntoLex и љегових модула. OntoLex-FrAC модул укључује информације о учесталости и примерима употребе екстрахованих из корпуса. У овом случају, креиран је корпус за специфичан домен под називом СрФудКо, који садржи чланке вести о фудбалу на српском језику. Вишечлани термини аутоматски су екстраховани из српског корпуса, а затим ручно евалуирани и класификовани као спортски или ...Jelena Lazarević, Ranka Stanković, Mihailo Škorić, Biljana Rujević. "Football terminology: compilation and transformation into OntoLex-Lemon resource" in LDK 2023 – 4th Conference on Language, Data and Knowledge, 12-15 September in Vienna, Austria, Lisabon : NOVA FCSH - CLUNL (2023). https://doi.org/10.34619/srmk-injj
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Neanderthal Settlement of the Central Balkans during MIS 5: Evidence from Pešturina Cave, Serbia
Dušan Mihailović, Stefan Milošević, Bonnie A.B. Blackwell, Norbert Mercier, Susan M. Mentzer, Christopher E. Miller, Mike W. Morley, Katarina Bogićević, Dragana Đurić, Jelena Marković, Bojana Mihailović, Sofija Dragosavac, Senka Plavšić, Anne R. Skinner, Iffath I.C. Chaity, Yiwen E.W. Huang, Seimi Chu, Draženko Nenadić, Predrag Radović, Joshua Lindal, Mirjana Roksandić (2022)Recent research in the southern Central Balkans has resulted in the discovery of the first Middle Paleolithic sites in this region. Systematic excavations of Velika and Mala Balanica, and Peˇsturina (southern Serbia) revealed assemblages of Middle Paleolithic artifacts associated with hominin fossils and animal bones. This paper focuses on Pesturina Layer 4, radiometrically and biostratigraphically dated to Marine Isotope Stage (MIS) 5, which yielded traces of temporary hunting camps. The remains of large ungulate prey are associated with predominantly ...Dušan Mihailović, Stefan Milošević, Bonnie A.B. Blackwell, Norbert Mercier, Susan M. Mentzer, Christopher E. Miller, Mike W. Morley, Katarina Bogićević, Dragana Đurić, Jelena Marković, Bojana Mihailović, Sofija Dragosavac, Senka Plavšić, Anne R. Skinner, Iffath I.C. Chaity, Yiwen E.W. Huang, Seimi Chu, Draženko Nenadić, Predrag Radović, Joshua Lindal, Mirjana Roksandić. "Neanderthal Settlement of the Central Balkans during MIS 5: Evidence from Pešturina Cave, Serbia" in Quaternary International (2022)
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Vulnerability methods in hard rock formation as a basis for groundwater risk assessment – from resource to source
Groundwater in a hard rock formation is most endangered at places where a potential source can discharge contaminants that can reach the saturated zone of an aquifer. In these circumstances, an essential tool for groundwater protection is the contamination risk map. This map is based on the integration of two maps: a hazards map, i.e., map of potential sources of contamination and a vulnerability map. The selection of a proper vulnerability method is an important task since the resulting ...karta rizika od kontaminacije, ranjivosti podzemnih voda, DRASTIC, EPIK, PI, COP, Nacionalni park TaraVladimir Živanović, Igor Jemcov, Veselin Dragišić. "Vulnerability methods in hard rock formation as a basis for groundwater risk assessment – from resource to source" in Geologia Croatica, Croatian Geological Survey (2022). https://doi.org/10.4154/gc.2022.23
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The challenges for Z-generation geologists
Dejan Radivojević (2022)Nastupajuća generacija geologa suočava se sa nekim problemima koji su poznati i njihovim prethodnicima, ali takođe i sa do sada novim i nepoznatim izazovima. Činjenica da mnogi geologiju povezuju sa „prljavim“ industrijama u kojima će biti sve manje prilika za zaposlenje u vreme kada se teži čistoj vodi, zemljištu i vazduhu kao i to da je smatraju zastarelom u sadašnje vreme brzog tehnološkog razvoja dovela je do velikog pada interesovanja za studije geologije svuda u svetu. Neophodno je još ...Dejan Radivojević. "The challenges for Z-generation geologists" in Tehnika, Beograd : Savez inženjera i tehničara Srbije (2022). https://doi.org/10.5937/tehnika2201037R