Претрага
537 items
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LRMI markup of OER content within the BAEKTEL project
... [11] Meusel, R., Petrovski, P., Bizer, C.: The webdatacommons microdata, rdfa and microformat dataset series. In: ISWC, 2014. [12] Paulheim, H. What the Adoption of schema. org Tells About Linked Open Data, 2015, http://ceur- ws.org/Vol-1362/PROFILES2015_paper6.pdf [13] Barker, P and Campbell ...Ranka Stanković, Daniela Carlucci, Olivera Kitanović, Nikola Vulović, Bojan Zlatić. "LRMI markup of OER content within the BAEKTEL project" in The Sixth International Conference on e-Learning (eLearning-2015), September 2015, Belgrade, Serbia, Belgrade : Belgrade Metropolitan Univesity (2015)
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Coal homogenization stockyard sizing “Tamnava – Zapad” case study
... can be stacked in 16 to 90 layers. For a more realistic hourly capacity, the minimum and maximum number of layers changes. For a pit rate of 3000 t/h, coal can be stacked in 25 to 150 layers. The example in Figure 2 shows the problem when the pit operates at a lower capacity, and in a zone containing ...Božo Kolonja, Dinko Knežević, Ranka Stanković, Dejan Stevanović, Detlef Trummer. "Coal homogenization stockyard sizing “Tamnava – Zapad” case study" in Proceedings of 13th International Symposium Continuous Surface Mining, ISCSM 2016, / (2016)
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A business intelligence approach to mine safety management
Ljiljana Kolonja, Ranka Stanković, Ivan Obradović, Olivera Kitanović, Dejan Stevanović, Marija Radojičić (2016)... Information Systems: Concepts, Methodologies, Tools, and Applications: Concepts, Methodologies, Tools, and Applications, 2009. 1: p. 185. 5. Cheng, H., Y.-C. Lu, and C. Sheu, An ontology-based business intelligence application in a financial knowledge management system. Expert Systems with Applications ...Ljiljana Kolonja, Ranka Stanković, Ivan Obradović, Olivera Kitanović, Dejan Stevanović, Marija Radojičić . "A business intelligence approach to mine safety management" in 13th International Symposium Continuous Surface Mining, Beograd : Yugoslav Opencast Mining Committee (2016)
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A hydrogeological model of the open-cast mine Tamnava - West Field (Kolubara Coal Basin, Serbia)
... Ground Water Flow Modelling Applications in Mining Hydrogeology. Mine Water and the Environment, 26 (4), pp. 264-270. RÜHAAK, W., LUO, J. and DIERSCH, H.-J.G. (2009) 3D Modelling of Brine Flow - A Case Study for a Flooded Salt Mine. In: Proceedings of the International Mine Water Conference. Pretoria ...Jelena Ratković, Dušan Polomčić, Dragoljub Bajić, Bojan Hajdin. "A hydrogeological model of the open-cast mine Tamnava - West Field (Kolubara Coal Basin, Serbia)" in Underground Mining Engineering no. 29, Belgrade : University of Belgrade - Faculty of mining and geology (2016): 43-54
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VENTEX: An Expert System for Mine Ventilation Systems Analysis
Analiza sistema za ventilaciju je komleksan proces, koji bazira na proračunu brojnih parametara, koji se odnose na: stanje mreže, provetrenost, stabilnost sistema, gubitke vazduha, klimatske uslove, gasno stanje, ugroženost od požara i opasne prašine. Navedeni problemi se uspešno rešavaju paketom SimVent, ali potpuno razumevanje i korišćenje dobijenih rezultata zahteva angažovanje iskusnog specijaliste iz oblasti ventilacije. Rešenje je nađeno u kreiranju ekspertnog sistema VENTEX, čija je baza znanja formalizacija ekspertskog znanja iz oblasti ventilacije rudnika. U radu je prikazana metodologija ...... Englewood Cliffs, New Jersey. Durkin,J., (1994), Expert Systems, Design and Development, Macmillan Publishing Company, New York. Hartman,H., (ed.), (1992), SME Mining Engineering Handbook, Society for Mining, Metallurgy, and Exploration, Inc. Littleton, Colorado, 2nd Ed. Vol.1. ...Ranka Stanković, Nikola Lilić, Ivan Obradović. "VENTEX: An Expert System for Mine Ventilation Systems Analysis" in YU Info '96 Brezovica, Društvo za informacione sisteme i računarske mreže (1996)
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The different approaches in seismic stratigraphy interpretation
Dejan Radivojević (2018)U tekstu su prikazana dva osnovna pristupa u seizmostratigrafskoj interpretaciji. Prvi kao polaznu osnovu ima seizmičke sekcije, čija se interpretacija u kasnijoj fazi koreliše sa bušotinskim podacima. Drugi u prvoj fazi analizira podatke dobijene dubokim bušenjem koji se kasnije korelišu sa seizmičkim sekcijama. Prikazan je hronološki redosled i objašnjen postupak pri seizmostratigrafskoj interpretaciji oba pristupa. Ovakav način interpretacije omogućio je naftnim kompanijama detaljnije i preciznije sagledavanje geoloških odnosa, smanjenje rizika istraživanja i racionalnije projektovanje razradnih bušotina.seizmostratigrafija, istraživanje nafte i gasa, karakteristične seizmičke sekvence, seiz-mofacijalna analiza... Exploration (ed. by J.S. Schlee). Memoir of the American Association of Petroleum Geologists, 33, 129-144. Tulsa, Oklaho- ma, 1984. [12] Veeken, P. C. H, 2007: Seismic Stratigraphy, Basin Analysis and Reservoir Characterisation, Seismic Exploration, Elsevier, 37, p 509, Amsterdam. D. RADIVOJEVIĆ ...Dejan Radivojević. "The different approaches in seismic stratigraphy interpretation" in Tehnika – rudarstvo, geologija i metalurgija, Savez inženjera i tehničara Srbije, Beograd (2018). https://doi.org/10.5937/tehnika1802211R
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Tektono-termalna evolucija kontakta Dinarida i Karpato-Balkanida u području Jastrepca
Dalibor Erak (2019)Predmet istraživanja doktorske disertacije je tektonska evolucija područja planine Jastrebac u centralnoj Srbiji, gde višefazna tektonska aktivnost od mezozoika do danas komplikuje rekonstrukciju strukturnih odnosa i geološke evolucije ovog prostora. Kompleksna višefazna evolucija planine Jastrebac u Srbiji je demonstrirana kombinovanjem kinematskih podataka prikupljenih na terenu i mikrostrukturnih opservacija sa dodatnim termohronološkim podacima “fission track” i podacima odredbe starosti metodom U-Pb na cirkonima. Gornjokredna ekshumacija bila je praćena gornjokredno-eocenskim navlačenjem i magmatizmom vezanim za kontinentalnu koliziju, pri čemu je akreciona ...... mikroskopskim pločicama su bili tretirani 35 sekundi sa 1,5 N HNO3 na 21 °C, dok su cirkoni na mikroskopskim pločicama bili tretirani oko 20 do 60 h smešom KOH i NaOH na 225 °C. Tako pripremljene pločice bile su priključene na eksterni detektor liskuna (EDM; Gleadow i Duddy, 1981) i zračene u reaktoru ...
... some Yugoslav granites and granodiorites by the rubidium-strontium method. Nature 197, 893-893. Chiari, M., Đerić, N., Garfagnoli, F., Hrvatović, H., Krstić, M., Levi, N., Malasoma, A., Marroni, M., Menna, F., Nirta, G., Pandolfi, L., Principi, G., Saccani, E., Stojadinović, U., Trivić, B., 2011 ...
... Dinarides and the Vardar Zone The Academy of Science and Arts of the Republic of Srpska, Banja Luka, pp. 245-253. Cvetkovic, V., Prelevic, D., Downes, H., Jovanovic, M., Vaselli, O., Pécskay, Z., 2004. Origin and geodynamic significance of Tertiary postcollisional basaltic magmatism in Serbia (Central ...Dalibor Erak. Tektono-termalna evolucija kontakta Dinarida i Karpato-Balkanida u području Jastrepca, Beograd : Rudarsko-geološki fakultet, 2019
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Fuzzy optimization in hydrodynamic analysis of groundwater control systems: Case study of the pumping station “Bezdan 1”, Serbia
Dragoljub Bajić, Dušan Polomčić (2014)A groundwater control system was designed to lower the water table and allow the pumping sta-tion “Bezdan 1” to be built. Based on a hydrodynamic analysis that suggested three alternative solutions, mul-ticriteria optimization was applied to select the best alternative. The fuzzy analytic hierarchy process methodwas used, based on triangular fuzzy numbers. An assessment of the various factors that influenced the selec-tion of the best alternative, as well as fuzzy optimization calculations, yielded the “weights” of the alternativesand the ...groundwater lowering, groundwater management scenario, fuzzy analytic hierarchy process,expert knowledge, triangular fuzzy numbers, linguistic variables... CRAWFORD, G. & WILLIAMS, C. 1985. A note on the analy- sis of subjective judgement matrices. Journal of Mathematical Psychology, 29: 387–405. DENG, H. 1999. Multicriteria analysis with fuzzy pair-wise comparison. International Journal of Approximate Reasoning, 21: 215–231. GRAHAM, I. 1991. Uncertainty ...Dragoljub Bajić, Dušan Polomčić. "Fuzzy optimization in hydrodynamic analysis of groundwater control systems: Case study of the pumping station “Bezdan 1”, Serbia" in Geološki anali Balkanskoga poluostrva, Belgrade : University of Belgrade - Faculty of mining and geology (2014). https://doi.org/10.2298/GABP1475103B
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Investigation of quantitative indicators of anisotropy based on longitudinal elastic waves propagation velocities with uncertainty
... pulse velocity for the evaluation of physical and mechanical properties of a highly porous building limestone. Ultrasonics, 60, pp. 33 – 40. YAVUZ H. et al. (2006) Estimating the index properties of deteriorated carbonate rocks due to freeze–thaw and thermal shock weathering. International Journal ...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
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Permanent GNSS monitoring of landslide Umka
Mileva Samardžić Petrović, Jovan Popović, Uroš Đurić, Biljana Abolmasov, Marko Pejić, Miloš Marjanović (2020)Клизиште Умка је једно од највећих насељених активних клизишта у Србији. Активност клизишта Умка се прати већ више од 85 година, различитим геотехничким и геодетским техникама. Од 2010. године, активност kлизишта се континуирано прати у реалном времену аутоматизованим перманентним системом за праћење базираним на Глобалним навигационим сателитским системима (ГНСС). Поред тога, од 2018. године активност клизишта се додатно прати кинематичким ГНСС одређивањем положаја скупа карактеристичних тачака као и применом UAV фотограметрије. Главни циљ овог рада је приказ резултата опажања три ...... averaging were made between multiple solutions for a single landslide point position. More specifically, the final landslide points coordinates (E, N, h) were estimated by calculating the arithmetic mean for all four kinematic GPS / GLONASS solutions, with experimental standard deviation σE = 3 mm ...Mileva Samardžić Petrović, Jovan Popović, Uroš Đurić, Biljana Abolmasov, Marko Pejić, Miloš Marjanović. "Permanent GNSS monitoring of landslide Umka" in International Conference on Contemporary Theory and Practice in Construction XIV Stepgrad, University of Banja Luka, Faculty of Architecture, Civil Engineering and Geodesy (2020). https://doi.org/10.7251/STP2014091S
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Adaptive neuro-fuzzy prediction of operation of the bucket wheel drive based on wear of cutting elements
The capacity of the rotor excavator depends largely on the operation of the subsystem for digging. There is a great contribution to the correct and sharp teeth when the capacity is the highest. In the function of time, the teeth become clogged due to abrasive wear, or changes in their geometric shape. To analyze the bucket wheel drive in depend on wear of the cutting elements in this study adaptive neuro fuzzy inference system (ANFIS) approach was implemented. ANFIS ...Filip Miletić, Predrag D. Jovančić, Milos Milovančević, Dragan Ignjatović. "Adaptive neuro-fuzzy prediction of operation of the bucket wheel drive based on wear of cutting elements" in Advances in Engineering Software, Elsevier BV (2020). https://doi.org/10.1016/j.advengsoft.2020.102824
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Geotehnički aspekti izgradnje visećeg pešačkog mosta u Starom gradu u Užicu
U radu su prikazani rezultati geotehničkih istraživanja za potrebe izgradnje visećeg pešačkog mosta preko klisure reke Đetinje u Užicu. Predviđeno je da most, sistema prednapregnute trake, omogući prelaz pešacima sa desne dolinske strane na stranu Starog grada, koja je opasana strmom liticom (cca. 40 m visine). Za potrebe formiranja geotehničkog modela i strukturnog sklopa krečnjačke stenske mase korišćen je postupak fotogrametrijskog snimanja dronom. Predviđeno je da se zatežuća sila (od oko 30 MN), koju most prenosi na obalni stub, ...fotogrametrija, stabilnost kosina, pukotine, prednapregnuta sidra, test granične nosivosti, paker (Ližonov) test... 1,0m u sidrenoj zoni, povratno crevo i sekundarno crevo. Glava privremenog geotehničkog sidra tip 12x0,62", se sastoji od: podložne ploče 340/340/50 h.0136mm; ankerne čaure; 12 klinova i 12 PE prstenova. 122 Sidra su privremenog karaktera, tj. nemaju dodatnu antikorozivnu zašitu potrebnu da bi ...Zoran Berisavljević, Miloš Marjanović, Uroš Đurić. "Geotehnički aspekti izgradnje visećeg pešačkog mosta u Starom gradu u Užicu" in Zbornik radova / Međunarodno naučno-stručno savetovanje Geotehnički aspekti građevinarstva i zemljotresno inženjerstvo, Vrnjačka banja, 1-3. novembar 2023., Beograd : Savez građevinskih inženjera Srbije (2023.)
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Генеза хидротермалног Cu-Au система Чукару Пеки (Источна Србија)
Милош Велојић (2021)Главни циљ испитивања хидротермалног система Чукару Пеки је разумевање процеса који су довели до његовог настанка, а посебно еволуције рудоносних флуида из којих је настала рудна минерализација. Утврђено је да је овај систем настао у периоду пре 86,78 - 85,19 Ma из магматског интрузива који је био богат водом и имао висок оксидативни потенцијал. Током хлађења, из овог магматског интрузива су издвојени веома врели флуиди, који су имали температуре изнад 600°С и висок салинитет. У ...Борска металогенетска зона, Тимочки магматски комплекс, порфирска лежишта, високосулфидациона лежишта, флуидне инклузије, рудне парагенезе, геохронологија, хидротермалне алтерације, LA-ICP-MS... Roedder, E., 1984. Fluid inclusions. De Gruyter, 646 str. 119. Rollinson, H. R., 2014. Using geochemical data: evaluation, presentation, interpretation. Routledge, 382 str. 120. Rusk, Brian G., Reed, Mark H., Dilles, John H., 2008. Fluid inclusion evidence for magmatic-hydrothermal fluid evolution ...
... Горње зоне система Чукару Пеки у плану (а) и у профилу (б). Гранични садржај за овај модел је 0,5% Cuекв. Димензије Горње зоне у плану су приближно 300 х 350 m, док је вертикално пружање око 550 m (модификовано из Бугарин и Маринковић, 2018). На основу података приказаних у Jakubec et al. (2018) ...
... њихове температуре на дијаграму приказане на температури од 650°C. 0 100 200 300 400 500 600 700 0 10 20 30 40 50 Те м пе ра ту ра х ом ог ен из ац иј е (° C ) Салинитет (теж.% NaCl екв.) Тип 1- Примарне високотемпературне инклузије Тип 2а- Инклузије са 2 кристала соли ...Милош Велојић. Генеза хидротермалног Cu-Au система Чукару Пеки (Источна Србија), Београд : [М. Велојић], 2021
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Application of Project Management Process on Environmental Management System Improvement in Mining-Energy Complexes
... Republic of Serbia, Environmental Protection Agency: Belgrade, Serbia, 2015. (In Serbian) 25. Uyterlinde, M.A.; van Arkel, W.G.; Burger, H.; van Dril, A.W.N.; Jeeninga, H.; Kroon, P. Monitoring Energy Efficiency Indicators in The Netherlands in 2000: Dutch Contribution to the Project ‘Cross Country Comparison ...
... 2017–2029. [CrossRef] 29. Szlavik, J.; Csete, M. Climate and Energy Policy in Hungary. Energies 2012, 5, 494–517. [CrossRef] 30. Stefanovic, G.; Skrijelj, H.; Ristovic, I.; Milutinovic, B.; Milosevic, O.; Popovic, S. Sustainable Waste Management Model—Case Study: Novi Pazar. J. Environ. Prot. Ecol. 2014, ...Jelena Malenović Nikolić, Dejan Vasović , Ivana Filipović , Stevan Mušicki, Ivica Ristović . "Application of Project Management Process on Environmental Management System Improvement in Mining-Energy Complexes" in Energies (2016). https://doi.org/https://doi.org/10.3390/en9121071
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Towards a Mining Equipment Ontology
... the IADIS International Conference on Web Based Communities 2006, San Sebastian, Spain, pp. 289-293, 2006. [10] Stahovich, T. F., Davis R., Shrobe, H.: An Ontology of Mechanical Devices, Working notes of AAAI-93 Workshop on Reasoning About Function, Washington, D.C. pp. 137 - 140, 1993. [11] Stanković ...Ranka Stanković, Ivan Obradović, Olivera Kitanović, Ljiljana Kolonja. "Towards a Mining Equipment Ontology" in Proceedings of the 12th International Conference Research and Development in Mechanical Industry, RaDMI 2012, September 2012, Vrnjačka Banja, Serbia no. 1, Vrnjačka Banja, Serbia : SaTCIP (Scientific and Technical Center for Intellectual Property) Ltd. (2012)
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E-Connecting Balkan Languages
In this paper we present a versatile language processing tool that can be successfully used for many Balkan languages. This tool relies for its work on several sophisticated textual and lexical resources that were developed for most of Balkan languages. These resources are based on several de facto standards in natural language processing.... translated to other Balkan languages. Figure 11. Results of a query bilingually expanded by Wordnet 6. References [1] P. Bonhomme, T. M. H. Nguyen, S. O’Rourke. XAlign: l’aligneur de Langue & Dialogue, http://www.loria.fr/equipes/led/outils/ALIGN/align.html, 2001. [2] B. Courtois ...Cvetana Krstev, Ranka Stanković, Duško Vitas, Svetla Koeva. "E-Connecting Balkan Languages" in Proceedings of the Workshop Workshop on Multilingual resources, technologies and evaluation for Central and Eastern European Languages, 17 September 2009, eds. C. Vertan, S. Piperidis, E. Paskaleva and Milena Slavcheva, Borovets, Bulgaria : Association for Computational Linguistics Stroudsburg, PA, USA (2009)
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A Lexical Approach to Acronyms and their Definitions
In this paper we present a comprehensive approach to acronyms for Natural-Language Processing (NLP) of Serbian texts. The proposed procedure includes extraction of acronyms and their definitions that are usual Multi-Word Units (MWUs), shallow parsing of MWUs that enables MWU lemmatization and production of entries in morphological electronic dictionaries, both for MWU and acronyms, that are provided with grammatical, syntactic, semantic and domain information. This approach enables representation that reflects complex relations between acronyms and their definitions.... processing of proper names in texts. In Proceedings of the 7th conference on European chapter of the ACL. Morgan Kaufmann Publishers Inc. Wren, J. D., H. R. Garner, et al., 2002. Heuristics for identification of acronym-definition patterns within text: towards an automated construction of comprehensive ...Cvetana Krstev, Duško Vitas, Ranka Stanković. "A Lexical Approach to Acronyms and their Definitions" in Proceedings of the 7th Language & Technology Conference, November 27-29, 2015, Poznań, Poland, Springer (2015)
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The Dictionary of the Serbian Academy: from the Text to the Lexical Database
In this paper we discuss the project of digitization of the Dictionary of the Serbo-Croatian Standard and Vernacular Language. Scanning and character recognition were a particular challenge, since various non-standard character set encoding was used in the course of the almost 60-year long production of the dictionary. The first aim of the project was to formalize the micro-structure of the dictionary articles in order to parse the digitized text of and transform it into structured data stored in relational lexical database. This approach ...... Natural Language Processing, Corpus Linguistics, Lexicography. Eight International Conference Bratislava, Slovakia, pp. 21-22. Berg, D. L., Gonnet, G. H., & Tompa, F. W. (1988). The New Oxford English Dictionary Project at the University of Waterloo (pp. 2-7). UW Centre for the New Oxford English Dictionary ...Ranka Stanković, Rada Stijović, Duško Vitas, Cvetana Krstev, Olga Sabo. "The Dictionary of the Serbian Academy: from the Text to the Lexical Database" in Proceedings of the XVIII EURALEX International Congress: Lexicography in Global Contexts, Ljubljana : Ljubljana University Press, Faculty of Arts (2018)
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Using Query Expansion for Cross-Lingual Mathematical Terminology Extraction
Velislava Stoykova, Ranka Stanković (2018)Velislava Stoykova, Ranka Stanković. "Using Query Expansion for Cross-Lingual Mathematical Terminology Extraction" in Advances in Intelligent Systems and Computing, Springer International Publishing (2018). https://doi.org/10.1007/978-3-319-91189-2_16
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Flotability of chalcopyrite from the Rudnik deposit
Директно селективно флотирање олова, бакра и цинка у флотацији рудника „Рудник” датира од 1984. године. Технолошка шема омогућава директно издвајање селективних концентрата у три циклуса. У првом циклусу се издваја минерал олова (галенит), док су минерал бакра (халкопирит) и минерал цинка (марматит) депримирани. У другом циклусу се оток концентрације минерала олова кондиционира и припрема за издвајање минерала бакра. Након кондиционирања, у овом циклусу се издваја минерал бакра. У трећем циклусу се оток концентрације минерала бакра кондиционира и припрема за ...Đurica Nikšić, Predrag Lazić, Milena Kostović. "Flotability of chalcopyrite from the Rudnik deposit" in Journal of Mining Science, Springer Verlag (2021). https://doi.org/10.1134/S1062739121030170