Претрага
827 items
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Environmental and Safety Accidents Related to Blasting Operation
Kričak Lazar, Kecojević Vladislav, Negovanović Milanka, Janković Ivan, Zeković Dario. "Environmental and Safety Accidents Related to Blasting Operation" in American Journal of Environmental Science 8 no. 4, New York, USA:Science Publication (2012): 360-365. https://doi.org/10.3844/ajessp.2012.360.365
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GIS application for landfill site selection: a case study in Pancevo, Serbia
Đokanović Sonja, Abolmasov Biljana, Jevremović Dragutin. "GIS application for landfill site selection: a case study in Pancevo, Serbia" in Bulletin of Engineering Geology and the Environment 75 no. 3, :Springer Berlin Heidelberg (2016): 1273-1299
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Оптимална конструкција бушотине на експлоатационом пољу Мајдан
Бранислав Миловановић (2024)Одређивање параметара конструкције бушотине представља најважнији корак ка сигурном и ефикасном опремању сваке бушотине. У овом раду биће предложен поступак за одређивање оптималних параметара експлоатационог поља Мајдан. Пример експлоатационог поља Мајдан ће бити коришћен за илустрацију предложеног поступка. Ово поље има специфичне геолошке и хидрогеолошке карактеристике које ће бити детаљно анализиране у раду. На основу ових анализа, биће предложени оптимални параметри бушотине који ће осигурати сигурно и ефикасно опремање бушотина на овом подручју.... MO)Ke OJipeyuiTrH HIpHTHcaK Ha ycTHMa OymoTHHe, ycJe)l OBor e(pekTa, 3a JlaTH HOpHUM, OJHOCHO, CJIOJHH HpHTHCaK, HyOMHy 3aMmeraPba IHIpOJyKTHBHcC CcepuHje H peHaTHBHy crenu(biuHy TexKHHy raca y OJIHOCy Ha Ba3JlyX, TJtacH: Dus = W [bar] (44) e 553,33+7pr Ine cy: Dsi – 1OpHH (c1ojHH) rpurucak [bar] ...
... he OMTHM MeTaJbHO aHanmHM3HpaHe y pamy. Ha OCHOBy OBHX aHannaa, OHhe npejnuoxxeeHuM onrMMaHHH mapaMerpHM OymroTHHe KojH he ocHrypaTH CHrTypHOo H e(bHKacHO OnpeMame OyrInoTHHa Ha OBOM IIOJIipyujy. Koyune peuu: aaumumne ue6u, no:be MajOan, koHcmpykuuja 0yuiomuHe Canp:xaj 84107 AAAAAA AAAAAA ...
... HpHTHCKa a aaaaoaaeaaaaaantoV 7.3 IIpopauyH akcujajiHor Hatpe3aa ..... 7.4 IIipopauyH OHakcHjaJiHor Hanmpe3aba 8. SAKJPVUTAK al a aaaoeraaaaaaa e aaaaiaoaaaatatakot 50 JIgTepaTrTypa..aaaaaaa a aaaoaeaaaaaaaoaoaaaaaaaeaaeaatagtate 51 1.VYBOJI OnpeljuiBabe · reoMerpHje H mapaMerapa KOHCTpyKIMje ...Бранислав Миловановић. Оптимална конструкција бушотине на експлоатационом пољу Мајдан, 2024
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Keyword-Based Search on Bilingual Digital Libraries
This paper outlines the main features of Biblisha, a tool that offers various possibilities of enhancing queries submitted to large collections of aligned parallel text residing in bilingual digital library. Biblishsa supports keyword queries as an intuitive way of specifying information needs. The keyword queries initiated, in Serbian or English, can be expanded, both semantically, morphologically and in other language, using different supporting monolingual and bilingual resources. Terminological and lexical resources are of various types, such as wordnets, electronic ...Ranka Stanković, Cvetana Krstev, Duško Vitas, Nikola Vulović, Olivera Kitanović. "Keyword-Based Search on Bilingual Digital Libraries" in Semantic Keyword-Based Search on Structured Data Sources - Second COST Action IC1302 International KEYSTONE Conference, IKC 2016, Springer (2017). https://doi.org/10.1007/978-3-319-53640-8_10
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The Usage of Various Lexical Resources and Tools to Improve the Performance of Web Search Engines
In this paper we present how resources and tools developed within the Human Language Technology Group at the University of Belgrade can be used for tuning queries before submitting them to a web search engine. We argue that the selection of words chosen for a query, which are of paramount importance for the quality of results obtained by the query, can be substantially improved by using various lexical resources, such as morphological dictionaries and wordnets. These dictionaries enable semantic ...LR web services, MultiWord Expressions & Collocations, Information Extraction, Information Retrieval... are unknown (i.e. that do not have a corresponding entry in our e-dictionaries) do not inflect. It would yield correct examples in some cases (for instance, in šper ploče ‘plywood’ šper does not inflect and it is not in our e-dictionaries since it is not a valid Serbian word). In some other ...
... assistant, Faculty of Mining and Geology, Belgrade 3 professor, Faculty of Mathematics, Belgrade, 4 professor, Faculty of Mining and Geology, Belgrade E-mail: cvetana@matf.bg.ac.yu, ranka@rgf.bg.ac.yu, vitas@matf.bg.ac.yu, ivano@rgf.bg.ac.yu Abstract In this paper we present how resources and tools ...
... Query Expansion) which uses various language resources we have developed for Serbian (Krstev et al., 2008). These resources include morphological e-dictionaries and finite state transducers, which offer the possibilities for solving the problem of flections in queries, and electronic thesauri ...Krstev Cvetana, Stanković Ranka, Vitas Duško, Obradović Ivan. "The Usage of Various Lexical Resources and Tools to Improve the Performance of Web Search Engines" in LREC 2008: Conference on Language Resources and Evaluation, Marrakesh, Morocco, May 2008, European Language Resources Association (ELRA) (2008)
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Application of the VIKOR Method for Selecting the Purpose of Recultivated Terrain after the End of Coal Mining
Radmila Gaćina, Sanja Bajić, Bojan Dimitrijević, Tomislav Šubaranović, Čedomir Beljić, Dragoljub Bajić (2024)Radmila Gaćina, Sanja Bajić, Bojan Dimitrijević, Tomislav Šubaranović, Čedomir Beljić, Dragoljub Bajić. "Application of the VIKOR Method for Selecting the Purpose of Recultivated Terrain after the End of Coal Mining" in Proceedings of the Bulgarian Academy of Sciences, Bulgaria, 28. maj 2024 , Prof. Marin Drinov Publishing House of BAS (Bulgarian Academy of Sciences) (2024). https://doi.org/10.7546/CRABS.2024.07.10
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Numerical Models of Debris Flows with Entrainment Analysis-Case Studies from the Republic of Serbia
The results of material entrainment analysis in RAMMS debris flow software, as well as numerical models of final flow heights for two case studies from the Republic of Serbia are presented. Both of debris flow cases started with initial sliding of huge volume block, prolonging to behave as flowing process. Results of the analysis showed that entrainment material affects final results of transportation model, runout distance, deposition area and volume of debris flow. In both cases entrainment volume is very ...Jelka Krušić , Biljana Abolmasov, Miloš Marjanović. "Numerical Models of Debris Flows with Entrainment Analysis-Case Studies from the Republic of Serbia" in Understanding and Reducing Landslide Disaster Risk. WLF 2020. ICL Contribution to Landslide Disaster Risk Reduction, Springer, Cham (2021). https://doi.org/10.1007/978-3-030-60706-7_25
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Analiza softvera za projektovanje ESP sistema
Aleksandar Sredojević (2024)U momentu kada pritisak na dnu bušotine nije dovoljan da savlada ukupne gubitke pritisaka od dna bušotine do separatora, proizvodnja pomoću ležišne energije nije više moguća i bušotina prestaje sa eruptivnim radom. Kako bi ponovo omogućili proizvodnju fluida iz bušotine, potrebno je primeniti neke od mehaničkih metoda eksploatacije. Najprimenljivije mehaničke metode eksploatacije su: gas lift (GL), dubinske pumpe sa klipnim šipkama (SRP), električne uronjene centrifugalne pumpe (ESP), zavojne pumpe (PCP) i hidraulične pumpe (HP). Jadna od tih metoda koja ...električna centrifugalna pumpa (ESP), proizvodnja fluida, mehaničke metode eksploatacije, Prosper, Pipesim... |> atNA ism3/d v |bara ” 180 1 |Fiowrate=50., 50,11596 __1540873 F šeo o e FROI % 80 0 o LNE T i — O E Stock-tank liquid atnodal point (sm3/d) — itow: — oufow _O OperatngPoPts Ram _ ||__Stop [d]piPesi e [cs Slika 6-17: Prikaz prozora sa izlaznim podacima 72 6.3.3 Rezultati i ...
... Pwr - dinamički pritisak na dnu bušotine, bar Pr it is ak di na mu čk i ı le ži šn i, ba r u i uuu uuu TIII NLJ BE IE E BE IE BE IE BE BE BE BE BE BE BE E EI BEIA 0.0 041 02 603 5'I4 3Š5B05 06 O7 08 oO9 .0 Stvaran ı moguć protok, m*/dan Slika 3-2 Grafički prikaz Vogelove jednačine ...
... demonstrirajući prethodnu izjavu da efikasnost pumpe se ne menja sa brzinom pumpanja (Gabor, T., 2018). G2700 Pumpa BEB __I | BBHIFIEI BE|E Na po r pu mp e, m O l !0 1000 1,500 2,000 2,500 3,000 3,500 „4,000 „4,500 5,000 %,500 „6,00 Protok pumpanja, m3/dan Slika 4-20: H-Q kriva za pumpu ...Aleksandar Sredojević. Analiza softvera za projektovanje ESP sistema, 2024
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Application of ERT in the study of debris-flow source area: Case study Selanac debris flow
Dragana Đurić, Jelka Krušić, Biljana Abolmasov. "Application of ERT in the study of debris-flow source area: Case study Selanac debris flow" in 11th Congress of the Balkan Geophysical Society, Volume 2021, Online-Romania, 10 -14. Oct 2021,, European Association of Geoscientists & Engineers (2021). https://doi.org/10.3997/2214-4609.202149BGS15
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Cenozoic brittle tectonic history of the Kopaonik area (Internal Dinarides, Serbia)
Mladenović Ana, Trivić Branislav (2014)Mladenović Ana, Trivić Branislav. "Cenozoic brittle tectonic history of the Kopaonik area (Internal Dinarides, Serbia)" in Proceedings of the XX CBGA Congress, Tirana, Albania, 23 – 29 September 2014 Jan-16, Tirana, Albania:Buletini i Shkencave Gjeojoglike (2014): 19-19
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Diagnostics of Bucket Wheel Excavator Discharge Boom Dynamic Performance and Its Reconstruction
Brkić Aleksandar, Maneski Taško, Ignjatović Dragan, Jovančić Predrag, Spasojević Brkić Vesna. "Diagnostics of Bucket Wheel Excavator Discharge Boom Dynamic Performance and Its Reconstruction" in Journal of Maintenance and Reliability 16 no. 2, :Polish Maintenance Society (2014): 188-197
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Persistence and failure of mean-field approximations adapted to a class of systems of delay-coupled excitable units
Franović Igor, Todorović Kristina, Vasović Nebojša, Burić Nikola. "Persistence and failure of mean-field approximations adapted to a class of systems of delay-coupled excitable units" in Physical Review E 89 no. 2, Vašington:American Physical Society (2014): 022926-1-022926-10
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Crystal structure of the tetragonal polymorph of bis(1-ethyl-3-methylimidazolium) tetrabromidocadmate
Đordević Tamara, Gerger Sabrina, Karanović Ljiljana. "Crystal structure of the tetragonal polymorph of bis(1-ethyl-3-methylimidazolium) tetrabromidocadmate" in Acta Crystallographica, Section E-Crystallographic Communications E72 no. part 7, 2 Abbey SQ, Chester, CH1 2HU, England :International Union Crystallography (2016): 1013-1016. https://doi.org/10.1107/S2056989016009919
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Fuzzy stohastički model izbora sistema otvaranja podzemnog rudnika
Saša M. Jovanović (2016-05-16)Investiciono okruženje skopčano sa rudarskom industrijom je veoma svojstveno kada seuporedi sa okruženjima koje susrećemo u tipičnim proizvodnim industrijama. Neke odkarakterisitka rudarstva, koje su često naznačene kao jedinstvene su: visok intenzitetinvesticija, dugi predproizvodni periodi, visok rizik i neobnovljivost resursa.Investiranje u sistem otvaranja rudnika predstavlja dobar primer ireverzibilneinvesticije. Takva investicija zahteva pažljivu analizu, jer nakon njene realizacije ona sene može nadoknaditi bez značajnog gubitka vrednosti. Očigledno je da izbor sistemaotvaranja podzemnog rudnika pripada strateškom planiranju...... 1-2 do površine terena. POVRSINA GLAVNI NISKOP OKNO SIPKA MESTO UTOVARA DNO OKNA FRONT OTKOPAVANJA B IL A N SN E R E Z E R V E V A N B IL A N SN E R E Z E R V E PRISTUPNI NISKOP PODETAZA 1-1 PODETAZA 1-2 PODETAZA 1-k . . . TRANSPORTNI HORIZONT 1-2 2 3 5 1-1 1-k 2-1 2-2 ...
... grafovi. Grafovi mogu biti neorjentisani i orjentisani. Graf G=(V,E) je neorjentisani graf ako je relacija E simetrična, tj. važi: EvvEvv ijji ,, (1) Graf G=(V,E) je orjentisani graf ako je relacija E antisimetrična, tj. važi: EvvEvv ijji ,, (2) Na slici ...
... poistovećuje sa skupom svih onih parova čije komponente jesu u relaciji. Neka je V neprazan skup i E binarna relacija u V. Uređen par G=(V,E) se naziva graf. Elementi skupa V su čvorovi grafa, a elementi skupa E grane ili ivice grafa. Dakle, graf je zadat ako je zadat skup čvorova i skup grana. Graf ...Saša M. Jovanović. "Fuzzy stohastički model izbora sistema otvaranja podzemnog rudnika" in Универзитет у Београду, Универзитет у Београду, Рударско-геолошки факултет (2016-05-16)
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Multivarijabilni modeli upravljanja u rudarstvu
Marjan M. Hudej (2014-02-03)osetljivost i rizik. Više pobuda generiše ovakvu atribuciju. Prva je, multivarijabilnostambijentalnih uslova i funkcionalna i strukturna složenost rudarskih sistema (čovek -priroda (radna sredina) - mašina – okruženje); Druga se odnosi na ne postojanje opštenaučne saglasnosti oko ocene pogodnosti modela za podršku odlučivanju i upravljanje.Treća, ako bi saglasnost i postojala, nije sigurno da bi raspoloživi modeli, metode i taktike,dale ekvivalentne rezultate za iste rudničke uslove. Četvrta, sistemske nauke još uveknemaju opšte prihvaćen i u praksi primenljiv algoritam izbora najboljeg rešenja ...... 2,0 0,383 2 E 0.558 3.0 0.408 3.0 0,150 3 Tabela 4-35, ELECTRE model, matrica agregatne dominacije Tehnološk. rešenje A1 A2 B1 B2 C D E Nadmašuje R a n g A1 1 0 0 0 0 0 1 4 A2 0 0 0 0 0 0 0 5 B1 1 1 1 0 0 0 2 3 B2 0 1 0 0 0 0 1 4 C 1 1 1 1 0 0 4 2 D 1 1 1 1 0 0 4 2 E 1 1 1 1 0 1 ...
... 2 1 1 1 1 1 1 1 1 E 2 3 3 3 3 3 5 5 5 6 6 Tabela 4-38, Ppoređenje poredaka tehnoloških rešenja Tehnološko rešenje M o d e l PROMETHEE ELECTRE AHP VIKOR (V1=0,5) Rang tehnološkog rešenje A1 4 4 6 4 A2 6 5 7 7 B1 5 3 4 5 B2 7 4 5 6 C 1 2 2 2 D 2 2 3 1 E 3 1 1 3 Rezultati ...
... saglasne dominacije PIS = 0,5476 A1 A2 B1 B2 C D E A1 1 0 1 0 0 0 A2 0 0 0 0 0 0 B1 1 1 1 0 0 0 B2 0 1 0 0 0 0 C 1 1 1 1 1 1 D 1 1 1 1 0 0 E 1 1 1 1 0 1 Tabela C-11, Matrica nesaglasne dominacije PINS = 0.6270 A1 A2 B1 B2 C D E A1 1 0 0 0 0 0 A2 0 0 0 0 0 0 B1 1 1 1 0 0 0 ...Marjan M. Hudej. "Multivarijabilni modeli upravljanja u rudarstvu" in Универзитет у Београду, Универзитет у Београду, Рударско-геолошки факултет (2014-02-03)
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Multivarijabilni modeli upravljanja u rudarstvu
Marjan M. Hudej (2014-02-03)osetljivost i rizik. Više pobuda generiše ovakvu atribuciju. Prva je, multivarijabilnostambijentalnih uslova i funkcionalna i strukturna složenost rudarskih sistema (čovek -priroda (radna sredina) - mašina – okruženje); Druga se odnosi na ne postojanje opštenaučne saglasnosti oko ocene pogodnosti modela za podršku odlučivanju i upravljanje.Treća, ako bi saglasnost i postojala, nije sigurno da bi raspoloživi modeli, metode i taktike,dale ekvivalentne rezultate za iste rudničke uslove. Četvrta, sistemske nauke još uveknemaju opšte prihvaćen i u praksi primenljiv algoritam izbora najboljeg rešenja ...... 2,0 0,383 2 E 0.558 3.0 0.408 3.0 0,150 3 Tabela 4-35, ELECTRE model, matrica agregatne dominacije Tehnološk. rešenje A1 A2 B1 B2 C D E Nadmašuje R a n g A1 1 0 0 0 0 0 1 4 A2 0 0 0 0 0 0 0 5 B1 1 1 1 0 0 0 2 3 B2 0 1 0 0 0 0 1 4 C 1 1 1 1 0 0 4 2 D 1 1 1 1 0 0 4 2 E 1 1 1 1 0 1 ...
... 2 1 1 1 1 1 1 1 1 E 2 3 3 3 3 3 5 5 5 6 6 Tabela 4-38, Ppoređenje poredaka tehnoloških rešenja Tehnološko rešenje M o d e l PROMETHEE ELECTRE AHP VIKOR (V1=0,5) Rang tehnološkog rešenje A1 4 4 6 4 A2 6 5 7 7 B1 5 3 4 5 B2 7 4 5 6 C 1 2 2 2 D 2 2 3 1 E 3 1 1 3 Rezultati ...
... saglasne dominacije PIS = 0,5476 A1 A2 B1 B2 C D E A1 1 0 1 0 0 0 A2 0 0 0 0 0 0 B1 1 1 1 0 0 0 B2 0 1 0 0 0 0 C 1 1 1 1 1 1 D 1 1 1 1 0 0 E 1 1 1 1 0 1 Tabela C-11, Matrica nesaglasne dominacije PINS = 0.6270 A1 A2 B1 B2 C D E A1 1 0 0 0 0 0 A2 0 0 0 0 0 0 B1 1 1 1 0 0 0 ...Marjan M. Hudej. "Multivarijabilni modeli upravljanja u rudarstvu" in Универзитет у Београду, Универзитет у Београду, Рударско-геолошки факултет (2014-02-03)
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Mineralogical and physicochemical characterization of bentonite clay from Svrljig, Serbia
Maja Milošević, Bojan Kostić (2022)... Geologica Balcanica, Geological Institute, Bulgarian Academy of Sciences Acad. G. Bonchev Street, Bl. 24, 1113 Sofia, Bulgaria Fax: (00359-2) 8724-638; E-mails: geolinst@geology.bas.bg; gbalc@geology.bas.bg; editorial-office@geologica-balcanica.eu Website: www.geologica-balcanica.eu © БАН, Геологически ...
... Svrljig, Serbia Maja Milošević, Bojan Kostić University of Belgrade, Faculty of mining and geology, Djusina 7, Belgrade, Serbia; corresponding author e-mail: maja.milosevic@rgf.bg.ac.rs This study focuses on the mineralogical characterization of bentonite clay from Svrljig, Serbia. It has been found ...Maja Milošević, Bojan Kostić. "Mineralogical and physicochemical characterization of bentonite clay from Svrljig, Serbia" in Abstracts XXII International Congress of the Carpathian Balkan Geological Association (CBGA), September 7–11, 2022 Plovdiv, Bulgaria, Софиа : Геологически институт „Акад. Страшимир Димитров“ (2022)
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Utilizing sewage wastewater heat in district heating systems in Serbia: effects on sustainability
Marija Živković, Dejan Ivezić (2021)Transformation of the heating sector is recognized as being essential for ensuring reliable and afordable energy services provided with reduced consumption of energy sources and diminished impact on the environment and less import dependency. The possibility of utilizing energy sources that otherwise would be wasted needs to be considered and treated as a big advantage of district heating systems. Despite many advantages, sewage wastewater heat is still a mostly unused resource at the global level and a totally unused ...рекуперација топлоте из отпадних вода, систем даљинског грејања, топлотне пумпе, енергетске уштеде, емисија угљендиоксида, енергетска безбедност, Србија... Shannon–Wiener index FRES Share of renewable energy sources E i,RES Energy content of input to the system of the ith renewable energy carrier Qext,RES Externally supplied heat produced from renewables Kp,dh Carbon dioxide emission coefficient E i Energy content of input to the system of the ith ...
... primary energy factor. It is calculated by: where E i,RES[MWh] Energy content of input to the system of the ith renewable energy carrier. Qext,RES[MWh] Externally supplied heat produced from renewables, Q ext [MWh] Externally supplied heat, E i [MWh] Energy content of input to the system of ...
... Jadwiszczak P, Axcell BP, Niemierka E, Brys K, Jou- hara H (2018) Heat pump placement, connection and operational modes in European district heating. Energy Build 166:122–144. https:// doi. org/ 10. 1016/j. enbui ld. 2018. 02. 006 Somogyi V, Sebestyén V, Domokos E (2018) Assessment of wastewater heat ...Marija Živković, Dejan Ivezić. "Utilizing sewage wastewater heat in district heating systems in Serbia: effects on sustainability" in Clean Technologies and Environmental Policy, Springer Science and Business Media LLC (2021). https://doi.org/10.1007/s10098-021-02063-6
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Creating an environment for free education and technology enhanced learning
Radojičić Marija, Obradović Ivan, Tatar Saša, Linzalone Roberto, Schiuma Giovanni, Carlucci Daniela (2014)Radojičić Marija, Obradović Ivan, Tatar Saša, Linzalone Roberto, Schiuma Giovanni, Carlucci Daniela. "Creating an environment for free education and technology enhanced learning" in Proc. of the Fifth International Conference on e-learning (eLearning-2014), 22-23 September, Belgrade, Serbia, Belgrade:Metropolitan University (2014): 44-48
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Definition of archeological objects on the location kremenite njive using euler 3d deconvolution on magnetic data
Cvetkov V., Vasiljević I., Sretenović B., Damnjanović Vesna. "Definition of archeological objects on the location kremenite njive using euler 3d deconvolution on magnetic data" in Book of abstracts - 17th. Serbian geological congress no. 2, :Serbian Geological Society (2018): 736-741