Претрага
742 items
-
Hybrid model of evaluation of underground lead–zinc mine capacity expansion project using Monte Carlo simulation and fuzzy numbers
Gligorić Zoran, Beljić Čedomir, Gluščević Branko, Jovanović Saša. "Hybrid model of evaluation of underground lead–zinc mine capacity expansion project using Monte Carlo simulation and fuzzy numbers" in Simulation: Transactions of the Society for Modeling and Simulation International 8 no. 87, :Sage Science Press (UK) ^Subsidiary of: Sage Publications, Inc. (2011): 726-742. https://doi.org/10.1177/0037549711410902
-
Kvantifikacija neodređenosti cene metala u rudarskom projektu primenom procesa povratka na srednju vrednost i teorije intervalno rasplinutih skupova drugog tipa
Gligorić Zoran, Beljić Čedomir, Gluščević Branko, Milutinović Aleksandar. "Kvantifikacija neodređenosti cene metala u rudarskom projektu primenom procesa povratka na srednju vrednost i teorije intervalno rasplinutih skupova drugog tipa" in Časopis Podzemni radovi no. 22, Beograd:Rudarsko-geološki fakultet, Beograd (2013): 71-84
-
Characterization of biochar surface functional groups
In this work, biochar originating from paper fibres was examined. Biochar was prepared via pyrolysis method at 550°C. Oxygen-containing functional groups on biochar surface were determined. The surface functional groups of biochar were analysed by Fourier transform infrared spectroscopy. The amount of oxygen-containing functional groups was performed with Boehm titration. The total acidity of biochar was mostly attributed to carboxylic and lactonic groups.Marija Ilić, Vesna Pavelkić, Aleksandar Lolić, Branko Leković. "Characterization of biochar surface functional groups" in Šesti Naučno-stručni skup Politehnika, Beograd, 10. decembar 2021., Beograd : Akademija tehničkih strukovnih studija (2021)
-
Overview of produced water in Oilfield
Išek Josip, Danilović Dušan, Crnogorac Miroslav, Leković Branko. "Overview of produced water in Oilfield" in Underground mining engineering Podzemni radovi no. 33, Belgrade, Serbia:University of Belgrade Faculty of Mining and Geology (2018): 79-87
-
Productivity improvement with use of beam gas compressor: pilot test in Southeastern Europe mature field
Most of the wells in the oilfield Turija are operating with sucker rod pumps, where casing pressure at around 15 bar, and with marginal production rates. The high value of casing pressure indicates high pressure on the face of the formation and depends directly on well productivity. In addition, with increasing value of the casing pressure gas column in the annulus is moving the dynamic fluid level near pump intake and more gas is entering the pump, it results ...beam gas compressor, BGC, increase productivity, sucker rod pump, SRP, mature field, artificial lift, production optimisationBojan Martinović, Dušan Danilović, Branko Grubač, Robert Fadiga. "Productivity improvement with use of beam gas compressor: pilot test in Southeastern Europe mature field" in International Journal of Oil Gas and Coal Technology (2022)
-
Optimizacija ugla nagiba generalne kosine unutrašnjeg odlagališta površinskog kopa Tamnava-Zapad
Formiranje geomehanički tabilnih unutrašnjih odlagališta otkrivke ima izuzetno značajnu ulogu pri projektovanju i planiranju razvoja površinskih kopova uglja sa aspekta preraspodele masa otkrivke, dinamike eksploatacije, ekoloških zahteva, rudarskih rizika i troškova. Uvećanje zavodnjenosti unutrašnjeg odlagališta otkrivke površinskog kopa Tamnava-Zapadno Polje, kao posledica globalnih klimatskih promena sa pojavom katastrofalnih obimnih padavina i velike poplave, dovelo je i do značajnih ali i trajnih promena geomehaničkih karakteristika materijala, umanjenja stabilnosti generalne kosine unutrašnjeg odlagališta i znatnog povećanja rudarskog rizika. Inovirane varijantne ...Natalija Pavlović, Branko Petrović, Tomislav Šubaranović, Ivan Janković. "Optimizacija ugla nagiba generalne kosine unutrašnjeg odlagališta površinskog kopa Tamnava-Zapad" in 15. Međunarodna konferencija o površinskoj eksploataciji OMC 2022, Zlatibor, 12.-15.10.2022., Jugoslovenski komitet za površinsku eksploataciju (2022)
-
A WordNet Ontology in Improving Searches of Digital Dialect Dictionary
In this paper, we present a method for automatic generation of a digital resource, which connects all indirect synonyms of a dialect term to all indirect synonyms of a corresponding term in the standard language, aiming to improve the search of a digital dialect dictionary. The method uses SWRL rules defined in the Serbian WordNet ontology to identify sets of synonymous words. It also uses e-dictionaries to produce correct lemmas in standard language that users usually employ in searches. ...... и риз т (admit) _/' – д Qo__/ „ 1 ~ пИ imati poverenja (trust) : 7 . „ : р и _ Р и а зупо“ ашогпгоман (ашћог ге) dozvoliti (permit, let) — а /5„,00 ovlastiti (authorize) , 0 ·dozvoliti а55 ~ *0) SV"Onym (р ) Sy?, podneti (endure) Fig. 1. Verb synsets in the SWN ontology which are ...
... given in Table 1. Based on the confusion matrix, per- formance measures were calculated: precision P = tp/(tp + fp) = 1.000, recall R=tp/(tp+ fn)) = 0.874, Fl = 2PR/(P + R) = 0.933, accuracy= 0.897. Table 1. The confusion matrix of the process deciding whether dictionary entries are correctly aligned ...Miljana Mladenović, Ranka Stanković, Cvetana Krstev. "A WordNet Ontology in Improving Searches of Digital Dialect Dictionary" in New Trends in Databases and Information Systems: ADBIS 2017 Short Papers and Workshops - SW4CH (Semantic Web for Cultural Heritage) 767, Springer International Publishing (2017). https://doi.org/10.1007/978-3-319-67162-8_37
-
Pre-failure deformation monitoring as rockfall prediction tool
... possible to extract color information of each point. This scanner has such features, so each point in the cloud is provided with X,Y,Z,I,R,G,B information, but R,G,B values can be also collected by using external, High-Definition cameras to obtain better results. 3.2. Data acquisition The first ...
... spring, on a cloudy but not rainy day, to provide constant light/reflectivity conditions between scanning epochs and to avoid vegetation screening. • R,G,B values are not to be sequentially collected, as they may differ significantly between adjacent scans and time epochs due to change of lighting, ...
... [1] Erismann T and Abele G 2001 Dynamics of Rockslides and Rockfalls (Springer: Berlin) p 316 [2] Rosser N, Lim M, Petley D, Dunning S and Allison R 2007 Patterns of precursory rockfall prior to slope failure. Jour. of Geoph. res. 112 F04014. [3] Abellán A, Calvet J, Vilaplana J M and Blanchard ...Miloš Marjanović, Biljana Abolmasov, Zoran Berisavljević, Marko Pejić, Petko Vranić. "Pre-failure deformation monitoring as rockfall prediction tool" in IOP Conference Series: Earth and Environmental Science, IOP Publishing (2021). https://doi.org/10.1088/1755-1315/833/1/012197
-
Грешка инклинације код депозиционе реманетне магнетизације
Mirko Petković, Vesna Cvetkov (2019)... 8917 44,3 47,26 2,96 6 0,8897 43,4 46,36 2,96 7 0,8924 38,4 41,32 2,92 8 0,9087 23,5 25,74 2,24 RMS 0,9017 F ak to r el ip ti ci te ta ( 𝑓 – fak to r) Faktor anizotropije pojedinačnih minerala (𝑎 – faktor) Slika 1. Funkcija 𝑓(𝑎), 𝑎 ∈ (0,20) za podatak pod rednim brojem ...
... (2011): Propagation and incorporation the error in anisotropy-based inclination corrections, Geophysical Journal International 187, 75-84 3. Butler, R., (2014): Paleomagnetism: Magnetic Domains to Geologic Terranes (Electronic Edition). 4. Hodych, J., & Bijaksana, S., (2002): Plastically deforming ...
... correct for paleomagnetic inclination shallowing, Physics and Chemistry of the Earth 27, 1273 – 1279. 5. Jackson, M., Banerjee, S., Marvin, J., Lu, R., & Gruber, W., (1991) Detrital remanence, inclination errors, and anhysteretic remanence anisotropy: quantitative model and experimental results ...Mirko Petković, Vesna Cvetkov. "Грешка инклинације код депозиционе реманетне магнетизације" in II Когрес геолога Босне и Херцеговине са међународним учешћем , Удружење геолога у Босни и Херцеговини (2019)
-
Investigation of quantitative indicators of anisotropy based on longitudinal elastic waves propagation velocities with uncertainty
... sample and well log on the Norwegian Continental shelf. Thesis (MSc), Faculty of Mathematics and Natural Sciences, University of Oslo MOORE R. E., KEARFOTT R. B. and CLOUD M. J. (2009) Introduction to interval analysis. Philadelphia: Society for Industrial and Applied Mathematics. MYRIN M. and MALAGA ...
... ALEFELD G. and MAYER G. (2000) Interval analysis: theory and applications. Journal of Computational and Applied Mathematics, 121, pp. 424–464. ESBERT R. M. (2007) Alteration of granite stone used in building construction. Materiales de Construcción, 57, pp. 77–89. FAVARO M. et al. (2006) Evaluation ...
... treatments of outdoor exposed stone monuments, Part I. Photo-oxidative weathering. Polymer Degradation and Stability, 91, pp. 3083–3096. FORT R., DE BUERGO M. A. and PEREZ-MONSERRAT E. M. (2013) Non- destructive testing for the assessment of granite decay in heritage structures compared to ...Miloš Gligorić, Jelena Majstorović, Suzana Lutovac. "Investigation of quantitative indicators of anisotropy based on longitudinal elastic waves propagation velocities with uncertainty" in Underground Mining Engineering, Belgrade : University of Belgrade - Faculty of Mining and Geology (2018). https://doi.org/10.5937/PodRad1832001G
-
Uticaj starosti i sastava komunalnog otpada na zbijanje
Bez obzira na mogućnost da se komunalni otpad koristi kao sirovina, u Srbiji je i dalje osnovni vid odlaganja na komunalne deponije. Iako je odlaganje na deponije prema hijerarhiji otpada najnepovoljnije rešenje, u odnosu na ranije formirana smetilišta i neuređene deponije, ipak se sistemski dolazi do prikupljanja podataka, što se može smatrati poboljšanjem prakse. Mehanička obrada komunalnog otpada zbijanjem predstavlja jednu od osnovnih metoda tretmana otpada. U radu će biti komentarisan uticaj sastava i starosti komunalnog otpada na parametre ...Jovana Janković Pantić, Dragoslav Rakić, Irena Basarić Ikodinović, Tina Đurić. "Uticaj starosti i sastava komunalnog otpada na zbijanje" in V simpozijum društva za Geotehniku R. Severne Makedonije, ISRM Specialized Conference, Društvo za Geotehniku Severne Makedonije (2022)
-
Rule-based Automatic Multi-word Term Extraction and Lemmatization
In this paper we present a rule-based method for multi-word term extraction that relies on extensive lexical resources in the form of electronic dictionaries and finite-state transducers for modelling various syntactic structures of multi-word terms. The same technology is used for lemmatization of extracted multi-word terms, which is unavoidable for highly inflected languages in order to pass extracted data to evaluators and subsequently to terminological e-dictionaries and databases. The approach is illustrated on a corpus of Serbian texts from ...... , Obradović, I., Stanković, R., and Vitas, D. (2013). An Approach to Efficient Processing of Multi-Word Units. In: Przepiórkowski, A., Piasecki, M., Jassem, K., Fuglewicz, P. (Eds.) Computational Linguistics. Berlin: Springer, pp. 109--129. Krstev, C., Stanković R., Obradović I., and Lazić B. ...
... Piasecki, M. (2008). Recognition of structured collocations in an inflective language. Systems Science, 34, pp. 27--36. Chen, J., Yeh, C. H., and Chau, R. (2006). A multi-word term extraction system. PRICAI 2006: Trends in Artificial Intelligence, Springer Berlin Heidelberg, pp. 1160--1165. Church ...
... Linguistics, pp. 67--72. Smadja, F.(1993). Retrieving Collocations from Text: Xtract, Computational Linguistics, 19(1), pp. 143-177. Stanković, R., Obradović, I., Krstev, C., and Vitas, D. (2011). Production of morphological dictionaries of multi-word units using a multipurpose tool. In Proc. ...Ranka Stanković, Cvetana Krstev, Ivan Obradović, Biljana Lazić, Aleksandra Trtovac. "Rule-based Automatic Multi-word Term Extraction and Lemmatization" in Proceedings of the 10th International Conference on Language Resources and Evaluation, LREC 2016, Portorož, Slovenia, 23--28 May 2016, European Language Resources Association (2016)
-
Strukture kristala - odabrana poglavlja iz kristalografije i njena multidisciplinarnost
Ljiljana Karanović (2024)Ljiljana Karanović. Strukture kristala - odabrana poglavlja iz kristalografije i njena multidisciplinarnost, Beograd : Univerzitet u Beogradu - Rudarsko-geološki fakultet, 2024
-
The Potential of Biomarkers to Distinguish Lower and Middle Miocene Lignites from the Coal-Mining District of Lusatia
... dane, whereas in Middle Miocene samples it is isopimarane or norabietane. The hopanoid distributions of all samples dominated by C3117(H)21(H)22(R)-hopane, but Lower- and Middle Miocene lignites notably differ according to abundance of hopenes that is order of magnitude higher in later. This ...
... precursor OM of Middle Miocene samples in comparison to Lower Miocene samples. References Bechtel, A., Sachsenhofer, R.F., Markic, M., Gratzer, R., Lücke, A., Püttmann, W., 2003. Organic Geochemistry 34, 1277–1298. Kus, J., Dolezych, M., Schneider, W., Hofmann, T., Visiné Rajczi, E., 2020. ...I. Kojic, J. Kus, D. Zivotic, K. Stojanovic. "The Potential of Biomarkers to Distinguish Lower and Middle Miocene Lignites from the Coal-Mining District of Lusatia" in 30th International Meeting on Organic Geochemistry (IMOG 2021), European Association of Geoscientists & Engineers (2021). https://doi.org/10.3997/2214-4609.202134092
-
Stratigraphy and microfossils (radiolarians and planktonic foraminifers) of the Upper Cretaceous (upper Santonian–lower Campanian) Struganik limestone (Western Serbia)
Liubov G. Bragina, Nikita Yu. Bragin, Ludmila F. Kopayevich, Nevenka Đerić, Nataša Gerzina Spajić (2019)Liubov G. Bragina, Nikita Yu. Bragin, Ludmila F. Kopayevich, Nevenka Đerić, Nataša Gerzina Spajić. "Stratigraphy and microfossils (radiolarians and planktonic foraminifers) of the Upper Cretaceous (upper Santonian–lower Campanian) Struganik limestone (Western Serbia)" in Palaeoworld, Elsevier BV (2019). https://doi.org/10.1016/j.palwor.2019.05.001
-
Geonasleđe Golije i Peštera
Ljiljana V. Grujičić-Tešić (2017-09-01)Sprovedena istraživanja u ovoj studiji obuhvatila su izdvajanje, opis, evaluaciju i valorizaciju objekata geonasleđa u cilju razvoja istraživane oblasti sa stanovišta geonauka, geoturizma i geoekologije. Na izučavanom području objekti geonasleđa su evidentirani, interpretirani, vrednovani i kategorisani, dat je predlog promocije geoobjekata, i na kraju predložena dopuna inventara objekata geonasleđa Srbije.U protekle četiri godine, na kompleksu geotopa Golije i Peštera istražena su geološka svojstva stena (tip stene, starost, fosilni sadržaj, morfološke i hidrogeološke karakteristike itd.), na osnovu čega je bilo ...... VREDNOSTI (DV) UPOTREBNA VREDNOST (UV) RANJIVOST (R) U K U P N A V R E D N O S T ( U V O ) = (3 × N Z ) + ( 2 × D V ) + ( 2 × U V ) + (2 × R ) / 2 ,5 Je di ns tv en os t (J ) R ep re ze nt at iv no st ( R P ) K om pl ek sn os t (K ) O br ...
... K A T G EO N A SL EĐ A GLAVNE VREDNOSTI (Mn) DODATNE VREDNOSTI (Av) G L A V N E V R E D N O S T I (M n) D O D A T N E V R E D N O S T I (A v) R et ko st R ep re ze nt at iv no st Z na nj e o ge ol . n au ka . N iv o in te rp re ta ci ...
... ok tu že nj u (D R) Tu ris tič ka in fra str uk tu ra (T I) E ko no m sk i p ot en ci ja l (E P ) U V = P R + V D + D R + T I + ( 2 × E P ) St ep en u gr ož en os ti (S U ) St ep en z aš tit e (S Z) R = S U + S Z Po sto ...Ljiljana V. Grujičić-Tešić. "Geonasleđe Golije i Peštera" in Универзитет у Београду, Универзитет у Београду, Рударско-геолошки факултет (2017-09-01)
-
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
-
Dimenzionisanje deponija za ugalj
... kao rezerva. -100 -50 0 50 100 150 Ja nu ar Feb ru ar M ar t A pr il M aj Ju n Ju l A vg ust S ep te m ba r O kt oba r N ove m ba r D ece m ba r mesec od no s pr oi zv od nj e i p ot ro šn je u gl ja , h ilj ad a to n a Tabela 2. Količina uglja koja se ...Dinko Knežević, Božo Kolonja, Ranka Stanković, Aleksandra Tomašević, Dragana Nišić. "Dimenzionisanje deponija za ugalj" in Jedanaesta međunarodna konferencija o površinskoj eksploataciji OMC, 2014, Zlatibor, 15-18 oktoba 2014, Zlatibor : Jugoskovenski komitet za površinsku eksploataciju (2014)
-
Terminological and lexical resources used to provide open multilingual educational resources
Open educational resources (OER) within BAEKTEL (Blending Academic and Entrepreneurial Knowledge in Technology enhanced learning) network will be available in different languages, mostly in the languages of Western Balkans, Russian and English. University of Belgrade (UB) hosts a central repository based on: BAEKTEL Metadata Portal (BMP), terminological web application for management, browse and search of terminological resources, web services for linguistic support (query expansion, information retrieval, OER indexing, etc.), annotation of selected resources and OER repository on local edX ...... Benjamins, 1999, pp. 115. [5] I. Obradović, R. Stanković, J. Prodanović and O. Kitanović, “A TEL platform blending academic and entrepreneurial knowledge,” in Proc. 4 th Conference on e- Learning, 2013, pp. 65–70. http://termi.rgf.bg.ac.rs/ [6] R. Stanković, D. Carlucci, O. Kitanović, N. Vulović ...
... e-Learning (eLearning-2015), 2015, pp. 98–103. [7] C. Krstev, Processing of Serbian. Belgrade, Serbia: Faculty of Philology, 2008, pp. 40–47. [8] R. Stanković, I. Obradović, O. Kitanović and Lj. Kolonja, “Building terminological resources in an e- learning envinronment,” in Proc. 3rd International ...
... and Flexible Tool for Automatic Terminology Extraction,” in Proc. Recent Advances in Natural Language Processing, 2015, pp. 473–479. [15] C. Krstev, R. Stanković, I. Obradović and B. Lazić, “Terminology Acquisition and Description Using Lexical Resources and Local Grammars,” in Proc. 11th Conference ...Biljana Lazić, Danica Seničić, Aleksandra Tomašević, Bojan Zlatić. "Terminological and lexical resources used to provide open multilingual educational resources" in The Seventh International Conference on eLearning (eLearning-2016), 29-30 September 2016, Belgrade, Serbia, Belgrade : Belgrade Metropolitan University (2016)
-
Late and post-collisional tectonic evolution of the Adria-Europe suture in the Vardar Zone
The Vardar Zone is a product of the Triassic-Jurassic opening of the Neotethys, Jurassic obduction, Late Cretaceous/Paleogene consumption of the oceanic crust and continental collision. During the last process, the Eastern Vardar Zone was thrust over the Central and eventually both onto the Western Vardar Zone. The present paleomagnetic and structural study provided new results from the first two zones in the Belgrade area. The younger set of data, together with published ones from the third zone, provide firm ...Emő Márton, Marinko Toljić, Vesna Cvetkov. "Late and post-collisional tectonic evolution of the Adria-Europe suture in the Vardar Zone" in Journal of Geodynamics, Elsevier BV (2022). https://doi.org/10.1016/j.jog.2021.101880