Претрага
1220 items
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Numeričko modelovanje povećanja iskorišćenja naftnih ležišta injektiranjem polimera i analiza osetljivosti parametara
Jana Šujica (2024)U toku proizvodnje jednog ležišta, nakon primene sekundarnih metoda iskorišćenja, velika količina nafte ostaje zarobljena u ležištu. Ovaj “problem” rešava se upotrebom tercijarnih metoda iskorišćenja.Tercijarne metode mogu se podeliti na: hemijske, termičke, mikrobiološke i metode utiskivanja gasova u uslovima mešanja i nemešanja.U ovom radu analiziraju se hemijske metode koje se odnose na injektiranje polimera u cilju povećanja iskorišćenja naftnog ležišta “X”. Simulacija je rađena u simulatoru “Tnavigator” na sintetičkom modelu u cilju definisanja stepena iskorišćenja naftnog ležišta “X” nakon ...... mobilitet vode Na slici 1.1.3. prikazane su krive frakcionog protoka u funkciji zasićenja vodom pri različitim uslovima mobiliteta. FR AK CI ON I P R O T O K ZASIČENJE VODOM, % Figure 1.1.3. Krive frakcionog protoka [6] Viskozitet vode predstavlja Jjedan od najvažnijih parametara za definisanje ...
... °+ (1.14.) Pri čemu Jje: P. – kapilarni pritisak; mž N Oow — međufazni napon dvofaznog sistema nafta — voda; — m 0 – ugao kvašenja;rad r — prečnik cevi, mm 1.1.1. Polimeri Polimeri predstavljaju makromolekule koji nastaju procesom polimerizacije monomera. Proces polimerizacije prikazan ...
... odnosu na istorijat proizvodnje, što se može primetiti na slici 3.4.1. 33 250 } 200 300 i|š = 550 - Š 5 Hi Fi 5 200- 8 100 o Fi Š Fl s 5i r Fi s 8 % ž 100} H Fj i š o Š 0 bj 0 2012 2014 2016 2018 2020 42022 2024 2026 2026 2012 2014 2016 2018 2020 2022 2024 2026 DATUM DATUM —— ...Jana Šujica. Numeričko modelovanje povećanja iskorišćenja naftnih ležišta injektiranjem polimera i analiza osetljivosti parametara, 2024
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Determination of wather loss from reservoirs in less permeable karst aquifer- case example of left bank of Lazici dam- western Serbia
Jemcov Igor, Mladenović Ana, Pavlović Radmila, Trivić Branislav, Petrović Dragana, Petrović Rastko (2014)Jemcov Igor, Mladenović Ana, Pavlović Radmila, Trivić Branislav, Petrović Dragana, Petrović Rastko. "Determination of wather loss from reservoirs in less permeable karst aquifer- case example of left bank of Lazici dam- western Serbia" in Proceedings of International conference and field seminar „Karst without boundaries“, 11-15 June 2014, Trebinje, Dubrovnik, Trebinje:Grafokomerc (2014): 307-312
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Koenigsberger ratio and total magnetic field anomaly reduction to the pole for the area of Macedonia
Cvetkov Vesna, Đurić Dragana, Lesić Vesna, Starčević Miroslav, Petković Mirko, Petrović Snežana (2017)Cvetkov Vesna, Đurić Dragana, Lesić Vesna, Starčević Miroslav, Petković Mirko, Petrović Snežana. "Koenigsberger ratio and total magnetic field anomaly reduction to the pole for the area of Macedonia" in Posebno izdanie na Geologica Macedonica; Зборник на трудови, книга 2, Štip:Rudarsko-geološki fakultet (2017): 529-534
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A reinterpretation of the geological map of northwestern part of the Lece volcanic complex
Bojan Kostić, Kristina Šarić, Vladica Cvetković, Nemanja Krstekanic, Nemanja Pantelić, Dragana Bosić (2017)Bojan Kostić, Kristina Šarić, Vladica Cvetković, Nemanja Krstekanic, Nemanja Pantelić, Dragana Bosić. "A reinterpretation of the geological map of northwestern part of the Lece volcanic complex" in Émile Argand Conference - 13th Workshop on Alpine Geological Studies - September 7th-18th 2017 in Serbia, Zlatibor Mts., Beograd:University of Belgrade - Faculty of Mining and Geology (2017): 55-55
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A reinterpretation of the geological map of northwestern part of the Lece volcanic complex
Bojan Kostić, Kristina Šarić, Vladica Cvetković, Nemanja Krstekanic, Nemanja Pantelić, Dragana Bosić (2017)Bojan Kostić, Kristina Šarić, Vladica Cvetković, Nemanja Krstekanic, Nemanja Pantelić, Dragana Bosić. "A reinterpretation of the geological map of northwestern part of the Lece volcanic complex" in Émile Argand Conference - 13th Workshop on Alpine Geological Studies - September 7th-18th 2017 in Serbia, Zlatibor Mts., Beograd:University of Belgrade - Faculty of Mining and Geology (2017): 55-55
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A reinterpretation of the geological map of northwestern part of Lece Volcanic Complex
Kostić Bojan, Šarić Kristina, Cvetković Vladica, Krstekanić Nemanja, Pantelić Nemanja, Bosić Dragana (2017)Kostić Bojan, Šarić Kristina, Cvetković Vladica, Krstekanić Nemanja, Pantelić Nemanja, Bosić Dragana. "A reinterpretation of the geological map of northwestern part of Lece Volcanic Complex" in 13th Workshop on Alpine Geological Studies, Zlatibor Mts, Beograd:University of Belgrade-Faculty of mining and geology (2017): 55
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Ecological potential of Epilobium dodonaei Vill. for restoration of metalliferous mine wastes
Ranđelović Dragana, Gajić Gordana, Mutić Jelena,Pavlović Pavle, Mihailović Nevena, Jovanović Slobodan (2016)Ranđelović Dragana, Gajić Gordana, Mutić Jelena,Pavlović Pavle, Mihailović Nevena, Jovanović Slobodan. "Ecological potential of Epilobium dodonaei Vill. for restoration of metalliferous mine wastes" in Environmental Engineering 95, Amsterdam, Netherlands :Elsevier (2016): 800-810. https://doi.org/http://dx.doi.org/10.1016/j.ec
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Geological knowledge in service to archaeological investigations: rock and ceramic findings as examples
Kristina Šarić, Suzana Erić, Vladica Cvetković, Josip Šarić, Dragana Antonović, Vesna Bikić. "Geological knowledge in service to archaeological investigations: rock and ceramic findings as examples" in Science for Conservation of the Danube Limes, Mortar Design for Conservation – Danube Roman Frontier 2,000 Years After. 1st International conference with workshop, Viminacium, Serbia, June 27th - July 1st, 2022, Belgrade : Institute of Archaeology (2022)
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Correlation between alterations and Cu-Au mineralization within first phase andesite in the Čukaru Peki deposit
Dragana Bosić, Vladica Cvetković, Miodrag Banješević, Aleksandar Pačevski, Siyuan Chen, Kristina Šarić (2022)Dragana Bosić, Vladica Cvetković, Miodrag Banješević, Aleksandar Pačevski, Siyuan Chen, Kristina Šarić. "Correlation between alterations and Cu-Au mineralization within first phase andesite in the Čukaru Peki deposit" in XXII International Congress of the Carpathian-Balkan Geological Association, Geologica Balcanica, Plovdiv, Bulgaria, 7–11 September 2022, Geological Institute, Bulgarian Academy of Sciences (2022)
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Stratigrafska pozicija i vulkanološke karakteristike andezita ležišta Čukaru Peki
Dragana Bosić, Vladica Cvetković, Miodrag Banješević, Siyuan Chen, Aleksandar Pačevski, Kristina Šarić (2022)Dragana Bosić, Vladica Cvetković, Miodrag Banješević, Siyuan Chen, Aleksandar Pačevski, Kristina Šarić. "Stratigrafska pozicija i vulkanološke karakteristike andezita ležišta Čukaru Peki" in 18. Kongres geologa Srbije „Geologija rešava probleme”, Divčibare, 1-4 jun 2022., Beograd : Srpsko geološko društvo (2022)
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Automatic construction of a morphological dictionary of multi-word units
The development of a comprehensive morphological dictionary of multi-word units for Serbian is a very demanding task, due to the complexity of Serbian morphology. Manual production of such a dictionary proved to be extremely time-consuming. In this paper we present a procedure that automatically produces dictionary lemmas for a given list of multi-word units. To accomplish this task the procedure relies on data in e-dictionaries of Serbian simple words, which are already well developed. We also offer an evaluation ...electronic dictionary, Serbian, morphology, inflection, multiwordn units, noun phrases, query expansion... applica- tions. PhD thesis, Université de Marne-la-Vallée (2000) 11. Courtois, B., Garrigues, M., Gross, G., Gross, M., Jung, R., Mathieu-Colas, M., Silberztein, M., Vivès, R.: Dictionnaire électronique des noms composés DELAC : les composants NA et NN. Technical Report 55, LADL, Université Paris ...
... deals with economic issues (162), from Verne’s novel Around the world in 80 days (114), from the explanatory dictionary of Serbian, under the letter R (604). As the analysis in the first step indicated that MWU proper names produce in general worse results, we decided to separate these lists in two groups ...
... Stefan”(2006) 192–197 5. Savary, A.: Multiflex: A Multilingual Finite-State Tool for Multi-Word Units. In: CIAA. (2009) 237–240 6. Krstev, C., Stanković, R., Vitas, D., Obradović, I.: The Usage of Various Lexical Resources and Tools to Improve the Performance of Web Search Engines. In: 6th LREC, Marrakech ...Cvetana Krstev, Ranka Stanković, Ivan Obradović, Duško Vitas, Miloš Utvić. "Automatic construction of a morphological dictionary of multi-word units" in Lecture Notes in Computer Science 6233, Advances in Natural Language Processing, Proceedings of the 7thInternational Conference on NLP, IceTAL 2010, Reykjavik, Iceland, August 2010, Springer (2010): 226-237. https://doi.org/10.1007/978-3-642-14770-8_26
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Mineralogical study of clays from Dobrodo, Serbia, for use in ceramics
Maja Milošević, Predrag Dabić, Sabina Kovač, Lazar Kaluđerović, Mihovil Logar. "Mineralogical study of clays from Dobrodo, Serbia, for use in ceramics" in Clay Minerals, Mineralogical Society (2019). https://doi.org/10.1180/clm.2019.49
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Definition of groundwater genesis and circulation conditions of the complex hydrogeological karst system Mlava–Belosavac–Belosavac-2 (eastern Serbia)
Ljiljana Vasić, Saša Milanović, Zoran Stevanović, Laszlo Palcsu. "Definition of groundwater genesis and circulation conditions of the complex hydrogeological karst system Mlava–Belosavac–Belosavac-2 (eastern Serbia)" in Carbonates and Evaporites, Springer Science and Business Media LLC (2020). https://doi.org/10.1007/s13146-020-00550-3
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Regulacija nivoa tečne faze u vertikalnim separatorima
Katarina Šoštarić (2024)Ovaj diplomski rad bavi se regulacijom nivoa tečne faze u vertikalnim separatorima u industriji nafte i gasa. U radu su istraženi različiti metodi merenja nivoa, uključujući plovke, ultrazvučne i radarske senzore. Radarski senzori su se pokazali kao najefikasniji u teškim radnim uslovima, zahvaljujući njihovoj visokoj preciznosti i pouzdanosti. Rad uključuje teoretski pregled metoda merenja nivoa, detaljno poređenje prednosti i nedostataka različitih senzora, kao i studiju slučaja implementacije radarskog senzora u vertikalnom separatoru. Analiza rezultata i preporuke za buduća istraživanja ...... *Izvor: Dr Dragan Stanković, "Fizičko tehnička merenja," Univerzitet u Beogradu, 1997. Sonda za merenje nivoa najčešće je cilindrična (koaksijalna) - kao spoljna elektroda i ima metalni zid rezervoara. C(h) MuomaTop Slika 11. Koaksijalni pretvarač za dielektrične tečnosti *Izvor: Dr Dragan Stanković ...
... upcisapau 3a Mepelbe noMepama 4 | x=h | || Slika 3.Metoda kontinualnog merenja nivoa tečnosti na bazi konverzije u translaciju *Izvor: Dr Dragan Stanković, "Fizičko tehnička merenja," Univerzitet u Beogradu, 1997. Za veće opsege, plovak se preko kotura vezuje za protivteg. Pomeranje plovka ...
... klizač kružnog potenciometra. Ka npeTnapa'y a MeEpcHib5C yrna Slika 4. Metoda kontinualnog merenja nivoa tečnosti na bazi rotacije *Izvor: Dr Dragan Stanković, "Fizičko tehnička merenja," Univerzitet u Beogradu, 1997. Osim za kontinualno merenje - detektori nivoa imaju mogućnost fiksnog ili ...Katarina Šoštarić. Regulacija nivoa tečne faze u vertikalnim separatorima, 2024
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Efekti potencijalnog korišćenja postrojenja za preradu otpadnih voda kao energetskih izvora u sistemima daljinskog grejanja u Srbiji
Системи даљинског грејања постоје у 57 градова и општина у Србији и доминантно користе фосилна горива. У овим урбаним срединама су изграђени, или се планира градња система за пречишћавање отпадних вода. У раду је размотрена (са еколошког и енергетског аспекта) могућност додатног, енергетског коришћења топлоте пречишћене воде у СДГ, применом топлотних пумпи. На примеру Шапца је извршено поређење постојећег СДГ са системом који би применом топлотних пумпи искористио енергетски потенцијал система за пречишћавање отпадних вода. Добијени индикатори су послужили ...... употребом следећег израза: 𝑁𝑡𝑝 = �̇�𝑃𝑉 ∙ 𝐶𝑂𝑃 = 0,9 ∙ �̇�𝑝𝑣 ∙ 𝑐𝐻2𝑂 ∙ 𝐶𝑂𝑃, MW (2) Јануар Фебруа р Март Април Мај Јун Јул Август Септем бар Октоба р Новем бар Децем бар t H2O СПОВ 11,1 11,3 14,1 15,9 18,8 22,2 23,8 24,2 21,8 18,7 15,8 12,2 t H2O САВА 3,1 3,9 6,9 11 ...
... система пречишћавања отпадних вода су приказане на слици 4. 0 10 20 30 40 50 60 0 500 1000 1500 2000 2500 3000 3500 h e a t lo a d f o r D H g ri d i n M W hours per year 91 | Стручно научна конференција ТОПС 2019 Слика 4 Просечна месечна температура пречишћене ...Dejan Ivezić, Marija Živković, Aleksandar Madžarević . "Efekti potencijalnog korišćenja postrojenja za preradu otpadnih voda kao energetskih izvora u sistemima daljinskog grejanja u Srbiji" in Stručno-naučna konferencija TOPS 2019, Poslovno udruženje toplana Srbije (2019)
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Part of Speech Tagging for Serbian language using Natural Language Toolkit
Ranka Stanković, Boro Milovanović (2020)Dok se razvijaju složeni algoritmi za NLP (obrada prirodnog jezika), osnovni zadaci kao što je označavanje ostaju veoma važni i još uvek izazovni. NLTK (Natural Language Toolkit) je moćna Python biblioteka za razvoj programa zasnovanih na NLP-u. Pokušavamo da iskoristimo ovu biblioteku za kreiranje PoS (vrsta reči) oznake za savremeni srpski jezik. Jedanaest različitih modela je kreirano korišćenjem NLTK API-ja za označavanje. Najbolji modeli se transformišu sa Brill tagerom da bi se poboljšala tačnost. Obučili smo modele na označenom ...... Pre-training of Deep Bidirectional Transformers for Language Understanding,” Oct. 2018 [2] Z. Lan, M. Chen, S. Goodman, K. Gimpel, P. Sharma, and R. Soricut, “ALBERT: A Lite BERT for Self-supervised Learning of Language Representations,” Feb. 2020 [3] Z. Zhang, J. Yang, and H. Zhao, “Retrospective ...
... part of speech tagger”, Proc. Third conference on Applied natural language processing (ANLC '92), Stroudsburg, Pennsylvania, USA, Mar. 1992. [23] R. Stanković, B. Šandrih, C. Krstev, M. Utvić, and M. Škorić, “Machine Learning and Deep Neural Network-Based Lemmatization and Morphosyntactic Tagging ...
... Tagging for Serbian,” Proc. International Conference on Language Resources and Evaluation, pp. 3954‑3962, May 2020 [24] A. Akbik, D. Blythe, and R. Vollgraf, “Contextual String Embeddings for Sequence Labeling,” Proc. 27th International Conference on Computational Linguistics, Santa Fe, New Mexico, ...Ranka Stanković, Boro Milovanović. "Part of Speech Tagging for Serbian language using Natural Language Toolkit" in 7th International Conference on Electrical, Electronic and Computing Engineering IcETRAN 2020, Academic Mind, Belgrade (2020)
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Quantitative landslide risk assessment in the city of Tuzla
In the climate-changing conditions, geological environment interacts more dramatically with the urban fabric than before. The urbanization is expansive and more aggressive than before, but so are the weather extremes and long-term climate trends. In effect, many processes which can be triggered by either side, nature or engineering, are becoming more pervasive than before, and such is the case with landslides. Dealing and managing landslides requires few crucial steps, starting from collecting data on landslide location and typology – ...... landslide assessment of the Belgrade metropolitan area: Pixel resolution effects and a cross-scaling concept”. Engineering Geology 256, 23-38. Fell, R., Corominas, J., Bonnard, C., Cascini, L., Leroi, E., Savage W. Z. (2008) “Guidelines for landslide susceptibility, hazard and risk zoning for land ...
... on international landslide literature (1945–2008)”. Landslides 6: 345. Haque, U., Blum, P., da Silva, F. P., Andersen, P., Pilz, J., Chalov, S. R., Malet, J-P., Jemec Auflič, M., Andres, N., Poyiadji, E., Lamas, P. C., Zhang, W., Peshevski, I., Pétursson, H. G., Kurt, T., Dobrev, N., García-Davalillo ...
... Suchitra, S. P. (2013) “Landslide hazard assessment: recent trends and techniques”. Springer Plus 2, 523. van Westen, C. J., Rengers, N., Soeters, R. (2003) “Use of Geomorphological Information in Indirect Landslide Susceptibility Assessment”. Natural Hazards 30(3): 399–419. ...Miloš Marjanović, Biljana Abolmasov, Cvjetko Sandić, Miralem Mulać, Petar Begović. "Quantitative landslide risk assessment in the city of Tuzla" in SCG-Xiii International Symposium on Landslides. Cartagena, Colombia- February 22-26, 2021, International Society for Soil Mechanics and Geotechnical Engineering (2021)
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Production of electricity from coal-fired power plants and accompanying CO2 emissions: comparison of EU-27 and US
Even in the third decade of the 21st century, large power plants are still responsible for more than half of the electricity production in Europe and US. They predominantly use fossil fuels in their work, which results in the emission of pollutants into the air, soil and water. In addition to the production of electric energy, fossil fuels, including coal, are used for industrial purposes. Although the use of coal, especially in the countries of the European Union, is ...... 4000 j 2000 j ——LFU-27 <——=US 0 eo w i e T T n o u 00 miuČ- O T W i m TO O ~ 0 O O a eNeon E:o:u: ' o e i e oč reeo oeezkžjjBNj“”oZr I eeeee e io a B e e e eoeo>o S Wwe e esA Č e!đ e RT NTe ı.I I K TTKR OT G Figure 2. Ratio of specific electricity production in EU-27 a US Nevertheless ...
... the USA from 2000. US electricity generation for 2021 are 4433,9 TWh, of which it is 1273 TWh (28,7%) from coal and coal products [6, 7]. 3500 , r 35,0 3000 2500 2000 | 1500 _ El ec tr ic it y ge ne ra ti on [1 Wh ] 1000 _ 500 _ Pa rt ic ip at io n of co al in el ec ...
... RRKRKPRKRNRKRRSGSKRGSG l4 Total electricity generation a Flectricity generation from coal —Coal [%] Figure 4. EU-27 electricity generation [8] 4500 , r 60,0 4000 50,0 3500 3000 40,0 2500 30,0 2000 1500 20,0 El ec tr ic ty ge ne ra ti on [1 Wh ] 1000 10,0 Pa rt ic ip at ...Uroš Djorgovski, Aleksandar Madžarević, Predrag Jovančić. "Production of electricity from coal-fired power plants and accompanying CO2 emissions: comparison of EU-27 and US" in International Conference on Global Energy and Climate Change - ICGRECC-23, New York, 2023, Research Galery- Science Leagues (2023)
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New data on the age of an Upper Cretaceous clastic-carbonate succession in Brežđe (Western Serbia)
Nevenka Đerić, Nataša Gerzina (2014)... 14-17, 26-28 are from Sample BR 1/3. Scale bar length for images 1-4, 7-24, 26-30 is 50um; for images 5, 6, 25 is 100nm. Geologia Croatica 67/3 r č| F3 |E -i | s s|s = LNKOS s|s žš|a& Hi F| t [} = s lo ME 5 fj FH s Fj s|m El 5 F| s [5] r3 - |H s E 20 s & Š s s < šŠ Age ...
... the Coniacian-Santo- nian deposits of the Mt. Ak-Kaya, Crimean Mountains, Ukraine.- Stratigr. Geol. Correl., 20/1, 73-96. LUGOVIĆ, B., ALTHERR, R., RACZEK, ., HOFMANN,A.W. & MA- JER, V.(1991): Geochemistry ofperidotites and mafic igneous rocks from the Central Dinaric Ophiolite Belt, Yugoslavia ...
... moyen: les biozoncs a radiolaires.- Sci. Geol. Bull., 38/2, 227—269. SCHMID, M.S., BERNOULLI, D., FOGENSCHUH, B., MATENCO, L., SCHEFER, S., SCHUSTER, R., TISCHLER, M. & USTASZE- WSKI, K. (2008): The Alpine-Carpathian-Dinaridic orogenic sys- tem: correlation and cvolution of tectonic units.– Swiss J ...Nevenka Đerić, Nataša Gerzina. "New data on the age of an Upper Cretaceous clastic-carbonate succession in Brežđe (Western Serbia)" in Geologia Croatica (2014)
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Konceptualni model hidrogeotermalnog sistema šire okoline Brusa - geološki, geofizički i hidrogeološki uslovi / Conceptual model of hydrothermal system of Brus area - geological, geophysical and hydrogeological condition
Dejan Milenić, Ana Vranješ, Marinko Toljić, Ivana Vasiljević, Natalija Radosavljević, Matija Ognjanović (2024)Na širem području Brusa izvedena su naučna multidisciplinarna istraživanja za potrebe ocene geotermalnog potencijala sa zadatkom de9inisanja uslova formiranja geotermalnih i termomineralnih resursa. Interpretacijom podataka zaključeno je da je na predmetnom terenu formiran "hibridni" hidrogeotermalni sistem, koji sadrži elemente sistema u rov-strukturi i elemente konvektivnog hidrogeotermalnog sistema sa rezervoarom u pokrivaču granitoidne intruzije. Sistem čine dva nezavisna hidrogeotermalna rezervoara. Prvi rezervoar formiran je u gornjokrednim krečnjacima na dubini od oko 1550 m. Maksimalne prognozne temperature hidrogeotermalnih resursa u krečnjačkom ...Dejan Milenić, Ana Vranješ, Marinko Toljić, Ivana Vasiljević, Natalija Radosavljević, Matija Ognjanović. "Konceptualni model hidrogeotermalnog sistema šire okoline Brusa - geološki, geofizički i hidrogeološki uslovi / Conceptual model of hydrothermal system of Brus area - geological, geophysical and hydrogeological condition" in XVII Srpski simpozijum o hidrologiji sa međunarodnim učešćem , Pirot, Srbija, 02-06. October 2024, Beograd : Univerzitet u Beogradu - Rudarsko-geološki fakultet (2024). https://doi.org/10.5281/zenodo.13739406