Претрага
533 items
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Ležište serizotil-azbesta u rejonu Bosanskog Petrovog Sela
Branimir Vakanjac (1962)Branimir Vakanjac. Ležište serizotil-azbesta u rejonu Bosanskog Petrovog Sela, Beograd:Rudarsko Geološki Fakultet, 1962
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Genetsko i geološko-ekonomsko modeliranje polimetaličnog ležišta Rudnik(Srbija)
Radule Tošović (2000)Radule Tošović. Genetsko i geološko-ekonomsko modeliranje polimetaličnog ležišta Rudnik(Srbija), Beograd:Rudarsko Geološki Fakultet, 2000
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Mineralne parageneze polimetaličnog ležišta čoka marin
Aleksandar Pačevski (2008)Aleksandar Pačevski. Mineralne parageneze polimetaličnog ležišta čoka marin, Beograd:Rudarsko Geološki Fakultet, 2008
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Tehnologija izrade i opremanje magacina eksploziva za potrebe ležišta bakra
Aleksandar Milojević (2024)Nakon radova otvaranja i početka eksploatacije, rudno telo bakra velikih rezervi zahteva i veliku količinu eksploziva da bi se ostvario zacrtan kapacitet. Samim tim, neophodno je izraditi funkcionalan magacin eksploziva koji će biti pristupačan svim horizontima i koji će moći da ispuni celokupni kapacitet svih horizonata. Obzirom da će se u magacinu skladištiti eksploziv, on mora ispunjavati specijalne uslove kako bi skladištenje bilo bezbedno. Neophodno je isprojektovati magacin tako da ispuni sve zahteve po pitanju količine i načina skladištenja eksploziva, ...... pripada seriji endogenih ležišta, odnosno grupi postmagmatskih ležišta. U okviru hidrotermalnog rudonosnog sistema su izdvojene dve genetske klase rudnih ležišta: 1) ležišta (mineralizacija) vezana sa srednjekiselim vulkano-intruzivnim magmatskim kompleksima (podtip: ležišta masivnihsulfida), odnosno ...
... 2.2, desno). U hipsometrijski najvišem, južnom delu ležišta Čukaru Peki, nalazi se masivno-sulfidni — piritski, tip mineralizacije - tzv. „apikalna kapa”. Sadržaj bakra u ovom delu ležišta je izuzetno visok (>9% Cu). Gornja granica ležišta ka okolnim stenama je predstavljena rasedom (tzv. „Moonlight ...
... prožilaka po obodu ležišta. Šupljikava silicija je uočena lokalno, uglavnom unutar ležišta. Alunit je nastao singenetski sa kovelinom ı gradi žice, ali se Javlja ı kao vezivo breča ı u vidu impregnacija u izmenjenim vulkanoklastitima gde zamenjuje feldspate. Geneza ležišta: Nastanak mineralizacije ...Aleksandar Milojević. Tehnologija izrade i opremanje magacina eksploziva za potrebe ležišta bakra, 2024
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Effects of Energy Production and Consumption on Air Pollution in Serbia
Marija Živković (2019)Energy production and combustion, mostly from unregulated or inefficient fuel combustion, are the single most important anthropogenic sources of air pollutant emissions. Energy sector in Serbia is highly fossil fuel intensive: 87.88% of energy consumed in Serbia is related to fossil fuels, while almost 95% of energy sources are combusted. In 2017. energy related carbon dioxide emission in Serbia is was 47.95 million tones. The main source of carbon dioxide emission was coal, responsible for almost 70% of energy ...... 2015, the energy sector was poner: Retrences responsible for over 80 million tonnes (Mt) of SO, emissions, with over 45% from industry and one-third from the power sector. Over one-quarter of total energy-related SO, 0 100000 200000 300000 400000 500000 600000 700000 800000 2 0 0 7 2 0 0 8 ...
... transport and buildings sectors 6. The transport sector is a major source of air pollutants, despite the many policy and technology advances achieved so far. It is responsible for around half of all energy related nitrogen oxide emissions and is an important source of primary particulate matter. The buildings ...
... energy consumption a) by sector b) by fuel Households and public and commercial sector (the buildings sector) account 44.45% of final energy consumption, so they need to receive special attention in terms of pollutant emissions. Industry is responsible for 27.62% of final energy consumption, followed with ...Marija Živković. "Effects of Energy Production and Consumption on Air Pollution in Serbia" in Mining and Environmental Protection-MEP 2019, University of Belgrade, Faculty of Mining and Geology (2019)
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Quantitative analysis of syllable properties in Croatian, Serbian, Russian, and Ukrainian
Biljana Rujević, Marija Kaplar, Sebastijan Kaplar, Ranka Stanković, Ivan Obradović, Jan Mačutek (2021)Biljana Rujević, Marija Kaplar, Sebastijan Kaplar, Ranka Stanković, Ivan Obradović, Jan Mačutek. "Quantitative analysis of syllable properties in Croatian, Serbian, Russian, and Ukrainian" in Language and Text: Data, models, information and applications, John Benjamins Publishing Company (2021). https://doi.org/10.1075/cilt.356.04ruj
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Tеслапедиа као централна база библиографских података о Николи Тесли
Циљ овог рада је да прикаже идеју и процес израде најкомплетније електронске библиографске базе о Николи Тесли, симболично назване Теслапедиа. Oвaквa бaзa би укључивaлa Teслину библиoгрaфиjу, кao и библиoгрaфиjу других o њeму. Сaм кoнцeпт рaзвoja Teслaпeдиe je видљив крoз двe глaвнe идeje. Првa идeja je зaснoвaнa нa пoстaвљaњу свих пoстojeћих библиoгрaфских јединица кoje Mузej пoсeдуje нa oдрeђeну вeб-лoкaциjу a другa, пoдjeднaкo вaжнa, oглeдa сe у мoгућнoстимa дaљeг рaзвoja и нaдгрaдњe сaмe структурe базе придруживaњeм нoвих библиoгрaфских пoдaтaкa. Oвa бaзa ...... граф ских пу бли ка- ци ја, 347 на сло ва пе ри о дич них пу бли ка ци ја (ча- со пи са и но ви на) са 2.435 по је ди нач них све за ка и око 50.000 но вин ских исе ча ка. По свом са др жа ју она осли ка ва ин те ре со ва ња и рад ве ли ког ге ни ја и са др жи број не пу бли ка ци је о ње му и пу ...
... го ди не. На кон на стан ка ме ха нич ког раз бо ја1, про на ла сци се ни жу је дан за дру гим, од Ана ли тич ког стро ја, пре ко Ди о ра ме и Зе у со вог ди ги тал ног ра чу на ра2, све до на стан- ка пр ве ра чу нар ске мре же на зва не AРПAНET3 1 Жoзe Шaрл Жaкaр (Jo seph Char les Jac qu ard) je ...
... ли ја. При мер ком плек сне уста но ве за шти те кул тур них до ба ра ко ја у свом фон ду има све вр сте ар те фа ка- та, ко је су пред мет ин те ре со ва ња и об ра де ско ро свих по је ди нач них стру ка из обла сти за шти те, јесте Му зеј Ни ко ле Те сле. Сва ка по је ди нач на об ра да, ана лог ...Ивана Ћирић, Сузана Топаловић, Биљана Лазић. "Tеслапедиа као централна база библиографских података о Николи Тесли" in Читалиште (2013)
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The subthermal potential of karstic groundwater of Kučaj–Beljanica region in Serbia estimated by the multivariate analysis
Earth-Surface Processes, Geology, Pollution, Soil Science, Water Science and Technology, Environmental Chemistry, Global and Planetary ChangeLjiljana Vasić, Dragana Ž. Živojinovic, Vladana Rajaković-Ognjanović, Huang Fen, Cao Jianhua. "The subthermal potential of karstic groundwater of Kučaj–Beljanica region in Serbia estimated by the multivariate analysis" in Environmental Earth Sciences, Springer Science and Business Media LLC (2021). https://doi.org/10.1007/s12665-021-09392-1
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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) ...... da bo odločitve partije zje*** neko Ustavno Sodišče? Pa kaj potem, če mu ni dokazano, kriv je ‘Why did we fight, so that the party decisions would be fu*** by some Constitutional Court? So what if there was no evidence, he is guilty’, where un- derlined words belong to BCMS as well (not necessarily with ...
... language that is being investigated. For example, authors in [31] used a corpus of tweets in Portuguese and patterns specific to the Portuguese language so que, sim, na boa, as well as language inde- pendent ones, like (ADV +ADV |AD J+AD J )3 and (!∗ |?∗ |!∗?∗ |?∗!∗). Authors in [8] propose eight patterns ...
... emphasis, e.g. saaad instead of sad ‘now’. The tweet a saaad, sredjivanje sobee, jupiii, bas sam hepii (‘and noooow, cleaning up the rooom, yippee, I am so happyy’) illustrates all three sources of problems (underlined words). Namely, these words cannot be recognized as words from BCMS as they were not found ...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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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 inflection... ac ij a ni je bi bl io te čk ia so ci ja ci ja bi bl io te čk ia so ci ja ci ja bi bl io te ka dr uš tv o as so ci at io n li br ar y 1, 3, 5, 6 ye s ud ru že nj a ia so ci ja ci ja po pu tb ib li ot ek e ud ru že nj e ia so ci ja ci ja po pu tb ib li ot ek ...
... dr už en je bi bl io te ka dr uš tv o as so ci at io n li br ar y 1, 3, 5, 6 ye s bi bl io te ka rs ki m dr uš tv im a bi bl io te ka rs ki dr uš tv o u bi bl io te ka rs ki dr uš tv o bi bl io te ka dr uš tv o as so ci at io n li br ar y 1, 3, 5, 6 ye s bi ...
... Bag-of-Words (BoW) rep- resentation for the English terms from the Dictionary (de- scribed at subsection 4.2.) and removed stop words from the list, so the list is mainly populated with domain words. Then we lemmatized each token from BoW using Natu- ral Language Toolkit (nltk) Python library and its ...Cvetana 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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Substitution reactions of some novel sterically hindered monofunctional Pd(II) complexes
Reakcije supstitucije monofunkcionalnih kompleksa [(TLtBu)PdCl]+ i [Pd(tpdm)Cl]+, gde je TLtBu = 2,6-bis[(1,3-di-terc-butilimidazolin-2-imino)metil]piridin i tpdm = terpiridindimetan, sa nukleofilima kao što su: tiourea, I−, Br−, NO2−, piridin i dimetil-sulfoksid (DMSO) proučavani su u 0,1 M vodenom rastvoru NaClO4 u prisustvu 10 mM NaCl. Reakcije su sprovedene na tri različite temperature (288, 298 i 308 K) korišćenjem tehnike zaustavljenog protoka na različitim temperaturama. Reakcije supstitucije su praćene pod uslovima pseudo prvog reda sa velikim viškom nukleofila. Dobijeni rezultati pokazuju da kompleks ...... � 10�24 cm3) [31], so it can be classified as ‘‘the softest’’ halide ion. ‘‘Soft’’ (polarizable) nucleophile favors ‘‘soft’’ substrate. Since Pd(II) is a ‘‘soft’’ acid its high reactivity with iodide is not surprising [32]. The polarizability of the Br� is 3.05 � 10�24 cm3 [31], so this ion is also ‘‘soft’’ ...
... (4.7 x 10-74 cm?) [31], so it can be classified as “the softest” halide ion. “Soft” (polarizable) nucleophile favors “soft” substrate. Since Pd(II) is a “soft” acid its high reactivity with iodide is not surprising [32]. The polarizability of the Br~ is 3.05 x 10-74 cm? [31], so this ion is also “soft” ...
... Thiourea is a very useful nucleophile since it combines the ligand properties of thiolates (r-donor) and thio- ethers (r-donor, p-acceptor) [22,24] so it shows the strongest nucleophilicity. Our results confirm this explanation. Better reactiv- ity of I� ion compared to that of Br� and NO2 � ions can ...Aleksandar Mijatović, Jovana Bogojeski, Biljana Petrović, Živadin D. Bugarčić. "Substitution reactions of some novel sterically hindered monofunctional Pd(II) complexes" in Inorganica Chimica Acta, Elsevier BV (2011). https://doi.org/10.1016/j.ica.2011.11.031
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Hidrogeohemijska valorizacija esencijalnih mikroelemenata mineralnih voda Srbije
Jana S. Stojković (2013-09-25)Mineralne vode još od davnina privlače pažnju ljudi i to kako u pogledu istraživanja iproučavanja, tako i u pogledu njihovog iskorišćavanja. Naročito je važno poznavanjesadržaja mikroelemenata u njima, jer su to komponente njihovog hemijskog sastavakoje ih odvajaju od tzv. „običnih“ malomineralizovanih voda.U ovom radu proučavani su odabrani esencijalni mikroelementi (fluor, bor, litijum,kalijum, stroncijum i silicijum), u mineralnim vodama Srbije, pri čemu je analiziranopreko 130 uzoraka mineralnih voda iz različitih geoloških sredina, to jest hidrogeološkihrejona. Cilj ovog istraživanja bio je ...esencijalni mikroelementi, faktori migracije, zakonomernosti rasprostranjenja, hidrogeohemijski procesi, multivarijantna statistička analiza, mineralne vode Srbije... isparavanja tih voda moguće je taloženje soli kalijuma. U slučaju slanih jezera i rasola, koji su u vezi sa ležištima soli kalijuma, takođe može doći do nakupljanja soli kalijuma, kao posledica isparavanja (Перельман 1972). U uslovima oksidacije sulfidnih ležišta, kao i u zonama oksidacije piritonosnih ...
... ih uslova njihovog obrazovanja. Ispitivanje određenih mikroelemenata u podzemnim vodama značajno je i prilikom istraživanja ležišta mineralnih sirovina (nafte, gasa, soli i raznih metaličnih i nemetaličnih sirovina). Predmet ove doktorske disertacije su upravo mikroelementi u mineralnim vodama ...
... molarni odnos K/Na kreće između 0,01 i 0,1, a samo se u retkim slučajevima približava jedinici. Takve su, na primer, formacione vode vezane za ležišta soli natrijuma i kalijuma, gde molarni odnos K/Na iznosi 0,64. Vrednost pomenutog odnosa od čak 7,84 zabeležena je u podzemnim vodama koje su vezane ...Jana S. Stojković. "Hidrogeohemijska valorizacija esencijalnih mikroelemenata mineralnih voda Srbije" in Универзитет у Београду, Универзитет у Београду, Рударско-геолошки факултет (2013-09-25)
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Managing mining project documentation using human language technology
Purpose: This paper aims to develop a system, which would enable efficient management and exploitation of documentation in electronic form, related to mining projects, with information retrieval and information extraction (IE) features, using various language resources and natural language processing. Design/methodology/approach: The system is designed to integrate textual, lexical, semantic and terminological resources, enabling advanced document search and extraction of information. These resources are integrated with a set of Web services and applications, for different user profiles and use-cases. Findings: The ...Digital libraries, Information retrieval, Data mining, Human language technologies, Project documentationAleksandra Tomašević, Ranka Stanković, Miloš Utvić, Ivan Obradović, Božo Kolonja . "Managing mining project documentation using human language technology" in The Electronic Library (2018). https://doi.org/10.1108/EL-11-2017-0239
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Српски језик у дигиталном добу -- The Serbian Language in the Digital Age
Duško Vitas, Ljubomir Popović, Cvetana Krstev, Ivan Obradović, Gordana Pavlović-Lažetić, Mladen Stanojević (2012)... literary texts, as well as different soware tools were developed in the scope of joint projects of the Faculty of Mathematics and the Department of Serbian at the Faculty of Philol- ogy in Belgrade. Language Technology helps unify Europe. Drawing on the insights gained so far, it appears that to- day’s ...
... lation environments and training programmes. Mobile information services, computer-assisted language learn- ing soware, eLearning environments, self-assessment tools and plagiarism detection soware are just some of the application areas in which language technology can play an important role. e popularity ...
... possible to systematically correct mistakes in the soware and give detailed feedback to the user, es- pecially when rule-based systems are used for language learning. However, due to the high cost of this work, rule-based language technology has so far only been de- veloped for a few major languages ...Duško Vitas, Ljubomir Popović, Cvetana Krstev, Ivan Obradović, Gordana Pavlović-Lažetić, Mladen Stanojević. "Српски језик у дигиталном добу -- The Serbian Language in the Digital Age" in META-NET White Paper Series, G. Rehm, H. Uszkoreit (eds.), Springer (2012)
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Zaštita od miniranja
Suzana Lutovac, Miloš Gligorić (2024)Suzana Lutovac, Miloš Gligorić. Zaštita od miniranja, Beograd : Univerzitet u Beogradu - Rudarsko-geološki fakultet, 2024
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The effect of finite driving rate on avalanche distributions
Statistics, Probability and Uncertainty,Statistics and Probability,Statistical and Nonlinear PhysicsSonja Radić, Sanja Janićević, Dragutin Jovković, Đorđe Spasojević. "The effect of finite driving rate on avalanche distributions" in Journal of Statistical Mechanics: Theory and Experiment, IOP Publishing (2021). https://doi.org/10.1088/1742-5468/ac1f12
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Proračun osnovnih mehanizama na rotornom bageru ShRs 1300 na PK Polje E
Luka Nikolić (2024)Površinska eksoloatacija ležišta mineralnih sirovina, a posebno uglja (lignita) vrši se primenom različitih rudarskih mašina. U zavisnosti od tipa ležišta, rudarsko-geoloških uslova, ekonomske analize i sl. koriste se sistemi sa kontinualnim ili diskontinualnim načinom rada.Kod kontinualnih sistema, primenjuju se kompleksne rudarske mašine kod kojih se proces odvija neprekidno odnosno bez ciklusa utovara, transporta i odlaganja i najčešće rade u sve tri smene. Rotorni bageri i bageri vedričari, transporteri sa gumenom trakom, odlagači ili deponijske mašine čine tkz BTO ili ...... sina Sa1 = So * sinal,a1 = 909 Sa2 = So • sina2 = So * sin(a1 — B),a2 = 90 — 15,65 = 74,35* Sa3 = So • sina3 = So * sin(a1 — 2 * 8),a3 = 90 — 2 • 15,65 = 58,79 Sa4 = So • sina4 = So * sin(a1 — 3 * 8),a4 = 90 — 3 « 15,65 = 43,05* Sa5 = So * sina5 = So * sin(a1 — 5 • B),a5 = 90 — 4 « 15,65 = 27 ...
... Beogradu, Rudarsko-geološki fakultet Datum odbrane: Sažetak Površinska eksoloatacija ležišta mineralnih sirovina, a posebno uglja (lignita) vrši se primenom različitih rudarskih mašina. U zavisnosti od tipa ležišta, rudarsko-geoloških uslova, ekonomske analize i sl. koriste se sistemi sa kontinualnim ...
... bo * so * (sina1 + sina2 + sina3 + sina4 + sina5 + sina6) = 0,259 * 0,478 * (sin90 + sin74,35 + sin58,7 + sin43,05 + sin27,4 + sin11,75) = 0,515m? 70 Diplomski rad Univerzitet u Beogradu – Rudarsko-geološki fakultet b _vbo_ 35 – 0259 a 1347 -m Debđina odreska: simal = Ž–Ž > Sa = So * sina ...Luka Nikolić. Proračun osnovnih mehanizama na rotornom bageru ShRs 1300 na PK Polje E, 2024
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Application of stochastic models for mine planning and coal quality control
... ordinary kriging. In these situa- tions, the uncertainty associated with the interpolated value cannot be properly incorporated [9]. As a result of the so-called smoothing effect, the variance of the estimated values is smaller than that of the original data. There are also limitations associated with ...
... blending attempt as distinct coals are combined to ensure sulfur regularity minimum. Software solution takes as input all needed design parameters, so very detailed analy- ses are possible. First input parameter is number of layers in base, from which software calcu- lates total number of layers. ...
... There are n layers in the base. One can observe that there is an n-1 layer in the next row, but also that rhombus, and corner shaped layers are paired. So, in all non-base rows of layers, there is: ( ) ( ) ( ) ( ) n n n n n � � � � � 1 2 3 1 1 2 � pairs of square and corner shaped layers ...Dejan Stevanović, Božo Kolonja, Ranka Stanković, Dinko Knežević, Mirjana Banković. "Application of stochastic models for mine planning and coal quality control" in Thermal Science, Belgrade : Vinča Institute of Nuclear Sciences (2014). https://doi.org/10.2298/TSCI130201031S
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Bridging Computational Lexicography and Corpus Linguistics: A Query Extension for OntoLex-FrAC
OntoLex, dominantni standard zajednice za mašinski čitljive leksičke resurse u kontekstu RDF-a, Linked Data i tehnologija Semantičkog veba, trenutno se proširuje sa posebnim modulom za Frekvencije, Primere i Informacije zasnovane na Korpusu (OntoLex-FrAC). Predlažemo novi komponent za OntoLex-FrAC, koji se bavi inkorporacijom korpusnih upita za (a) povezivanje rečnika sa korpusnim mašinama, (b) omogućavanje RDF baziranih web servisa da dinamički razmenjuju korpusne upite i podatke odgovora, i (c) korišćenje konvencionalnih upitačkih jezika za formalizaciju unutrašnje strukture kolokacija, skica reči i ...standardizacija, digitalna leksikografija, OntoLex, upiti korpusa, povezani podaci, Lingvistički povezani otvoreni podaciChristian Chiarcos, Ranka Stanković, Maxim Ionov, Gilles Sérasset. "Bridging Computational Lexicography and Corpus Linguistics: A Query Extension for OntoLex-FrAC" in Proceedings of the 2024 Joint International Conference on Computational Linguistics, Language Resources and Evaluation (LREC-COLING 2024), Turin, 20-25 May 2024, LREC (2024)
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The analysis of the geothermal energy capacity for power generation in Serbia
Jana Stojković, Goran Marinković, Petar Papić, Mihailo Milivojević, Maja Todorović, Marina Ćuk (2013)... temperature is extensively used as a geothermometer in examinations of geothermal resources. In addition to temperature, SiO2 sol- ubility is affected by acidity/alkalinity of solu- tions and a variety of the salts present. Silica is rapidly dissolving in water of low pH values, such as pit water or ...
... equations, which indicated potential of the hydrogeothermal resource. The first to be implemented was silica geothermometer based on quartz solubility; sol- ubility in water of different silica forms (quartz, chalcedony, and amorphous silica) were mea- sured in relation to temperature and pressure. This ...
... equations, which indicated potential of the hydrogeothermal resource. The first to be implemented was silica geothermometer based on quartz solubility; sol- ubility in water of different silica forms (quartz, chalcedony, and amorphous silica) were mea- sured in relation to temperature and pressure. This ...Jana Stojković, Goran Marinković, Petar Papić, Mihailo Milivojević, Maja Todorović, Marina Ćuk. "The analysis of the geothermal energy capacity for power generation in Serbia" in Thermal Science, National Library of Serbia (2013). https://doi.org/10.2298/TSCI120215033S