Претрага
1220 items
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Hidrotermalne alteracije kao kontrolni faktor mineralizacije u ležištu bakra Borska reka
Jovana Mirčeta (2024)Rudno polje Bor kome pripada rudno telo Borska reka se nalazi u severnom delu Borsko- Srednjegorske zone Karpato-balkanske metalogenetske provincije. Ležište Borska Reka se nalazi u krajnjim severozapadnim delovima rudnog polja Bor. Smešteno je u intenzivno izmenjenim andezitima i njihovim piroklastitima. Relativno je jednostavne građe. Ležište Borska reka genetski pripada grupi hidrotermalnih ležišta, klasi porfirskih ležišta bakra i zlata. Sastavni je deo velikog hidrotermalnog rudonosnog sistema Bor, koji je po uslovima stvaranja i tipovima rudne mineralizacije sličan hidrotermalnom rudonosnom ...... Adelaide, 14 p. Banjesevic M., Cocic S., and Radovic M. 2001: Petrology and K/Ar ages of volcanic rocks for widen Bor zone as part of the Timok Magmatic Complex (East Serbia). ABCD GEODE Workshop, Vata Bai, Romania, 39. Banješević M., Cvetković V., Koželj D., Radović M., 2003: The Timok Magmatic ...
... metodom ICP-MS, intervala u kojima se nalaze pomenuti uzorci. Tabela 3. Hemijska analiza intervala analiziranih uzoraka BUŠOTINA OD{m) DO{m) Dužina Uzorka (m) Au_ppm Cu_pct CuEqCalc Ag_ppm ZKBR7 725.5 727.5 2 0.04 0.0628 0.0884 0.25 8.08 ZKBR7 752 754 2 0.02 0.0099 0.0227 0.25 1.55 ZKBR7 ...
... a. Na površini terena, istočno od borskog raseda, konglomerati dostižu širinu i do 700 m. Podinu ležišta čine borski konglomeati. Odnos između konglomerata i ležišta, od kote -315 do krajnje dubine -995 m, je tektonski i kontrolisan je borskim rasedom. Konglomerati transgresivno leže preko g ...Jovana Mirčeta. Hidrotermalne alteracije kao kontrolni faktor mineralizacije u ležištu bakra Borska reka, 2024
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Vodosnabdevanje i održivo upravljanje podzemnim vodnim resursima u Srbiji
Dušan Polomčić, Zoran Stevanović, Dragoljub Bajić, Bojan Hajdin, Vesna Ristić-Vakanjac, Petar Dokmanović, Saša Milanović (2012)Slično većini evropskih zemalja, udeo podzemnih voda u javnom vodosnabdevanju u Srbiji je oko 75%. Najveće rezerve su akumulirane u vodonosnim naslagama intergranularne poroznosti neogene i kvartarne starosti, kao i u karstnim izdanima. One su jedini izvor vodosnabdevanja pijacom vodom za Vojvodinu i veći deo Srbije. Delovi sa malim rezervama podzemnih voda su Šumadija i južni delovi zemlje, gde se koriste u većoj meri površinske vode. Do sada izvedena hidrogeološka istraživanja pokazuju da se zahvata oko 30% obnovljivih rezervi ...Dušan Polomčić, Zoran Stevanović, Dragoljub Bajić, Bojan Hajdin, Vesna Ristić-Vakanjac, Petar Dokmanović, Saša Milanović. "Vodosnabdevanje i održivo upravljanje podzemnim vodnim resursima u Srbiji" in Vodoprivreda, Beograd : Jugoslovensko društvo za odvodnjavanje i navodnjavanje (2012)
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Fuzzy expert analysis of the severity of mining machinery failure
Mining machinery failure is almost an everyday occurrence. Usually the failures bare certain consequences, which require additional financial costs to repair and restore the system to its operational state. The consequences are viewed through negative and damaging effects a failure has on the machine, health and safety of the employees, work environment, and on the environment. The removal of the consequences of the failure requires additional financial investment, which has a negative impact on the company’s business. In order ...... according to the significance when dependability is estimated. The reliability R, maintainability M, and maintenance support L indicators are used, and dependability is estimated by max–min composition, as D = R ◦ (M × L). The authors did not allocate the same significance to all the indicators, so the maintenance ...
... effects analysis using approximate reasoning, Reliab. Eng. Syst. Saf. 79 (1) (2003) 69–85, http: //dx.doi.org/10.1016/S0951-8320(02)00179-5. [12] M. Braglia, M. Frosolini, R. Montanari, Fuzzy criticality assessment model for failure modes and effects analysis, Int. J. Qual. Reliab. Manag. 20 (4) (2003) ...
... V. Petrović, M. Tanasijević, V. Milić, N. Lilić, S. Stojadinović, I. Svrkota, Risk assessment model of mining equipment failure based on fuzzy logic, Expert Syst. Appl. 41 (18) (2014) 8157–8164, http://dx.doi.org/10.1016/j. eswa.2014.06.042. [18] S. Radosavljević, N. Lilić, S. Ćurčić, M. Radosavljević ...Dejan V. Petrović, Miloš Tanasijević, Saša Stojadinović, Jelena Ivaz, Pavle Stojković. "Fuzzy expert analysis of the severity of mining machinery failure" in Applied Soft Computing, Elsevier BV (2020). https://doi.org/10.1016/j.asoc.2020.106459
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Pseudo-linear combination of fuzzy metrics
... 08:56:33 Pseudo-linear combination of fuzzy metrics Nebojsa M. Ralević, Bratislav D. Iričanin, Dejan Ćebić Дигитални репозиторијум Рударско-геолошког факултета Универзитета у Београду [ДР РГФ] Pseudo-linear combination of fuzzy metrics | Nebojsa M. Ralević, Bratislav D. Iričanin, Dejan Ćebić | Publications ...
... commutativity of N”-1, we have N (ay...,an) = Nkfl(Nm*l(ap(l), ..:ydp(my)), -1 —1 N (ap(mi+1i)i---)Gp(m+na)) -ı NE (ap(aqna_id1)i---iGp(n))), where p is arbitrary permutation of set 1 = {1,...,n} and m + +nk = n. So, N'(a) = a, a2) = N(a,a), a = N(a"),a) = N(N(aya),a) = N*(a,a,a), a) = N(at),a) = N(NŽ(a ...
... each a > 0, there is no e N, for all m > no, such that (i) diza,a,a)>1—=e, (i) d(zn,a,a) < e. DEFINITION 3.5. Let (X,d) be fuzzy metric space. Then a sequence {za} in X is said to be Cauchy if for each e e (0,1) and each a > 0, there is no e N, for all n,m > no, such that (i) d(I„,.TJm, oa)>1-se ...Nebojsa M. Ralević, Bratislav D. Iričanin, Dejan Ćebić. "Pseudo-linear combination of fuzzy metrics" in Publications de l’institut mathematique, Mathematical Institute of the Serbian Academy of Sciences and Arts (2024)
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Modeliranje sistema upravljanja zaštitom životne sredine u rudarsko-energetskim kompleksima
Jelena R. Malenović - Nikolić (2016-07-12)Efikasnost funkcionisanja sistema upravljanja zaštitom životne sredine u rudarskoenergetskimkompleksima zavisi od stepena sprovođenja usvojene politike zaštiteživotne sredine i primene preventivnih mera zaštite životne sredine. Nedostatakfinansijskih sredstava za unapređivanje tehnologije eksploatacije, transporta, pripreme iprerade energetskih mineralnih sirovina u našim rudarsko-energetskim kompleksima,negativno utiče na ostvarivanje ciljeva zaštite životne sredine, a posledice radnihaktivnosti rudarsko-energetskih kompleksa dovode do smanjenja nivoa kvalitetavazduha, vode i zemljišta...rudarsko-energetski kompleks, životna sredina, sistem upravljanja,višekriterijumsko odlučivanje, modeliranjeJelena R. Malenović - Nikolić. "Modeliranje sistema upravljanja zaštitom životne sredine u rudarsko-energetskim kompleksima" in Универзитет у Београду, Универзитет у Београду, Рударско-геолошки факултет (2016-07-12)
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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
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Topic Modeling of the SrpELTeC Corpus: A Comparison of NMF, LDA, and BERTopic
Modeliranje tema je efikasan način da se dobije uvid u velike količine podataka. Neki od najčešće korišćenih metoda za modeliranje tema su Latentna Dirihleova alokacija (LDA) i faktorizacija nenegativne matrice (NMF). Međutim, sa porastom modela samopažnje i unapred obučenih jezičkih modela, pojavili su se novi načini za ekstrakcju tema. BERTopic predstavlja novi pristup modeliranju tema. U ovom radu smo uporedili performanse LDA, NMF i BERTopic na književnim tekstovima na srpskom, merenjem koherentnosti tema i raznovrsnosti tema, kao i kvalitativnom ...Teodora Mihajlov, Milica Ikonić Nešić, Ranka Stanković, Olivera Kitanović. "Topic Modeling of the SrpELTeC Corpus: A Comparison of NMF, LDA, and BERTopic" in Annals of Computer Science and Information Systems, IEEE (2024). https://doi.org/10.15439/2024F1593
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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 – ...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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Arsenic in Tap Water of Serbia´s South Pannonian Basin and Arsenic Risk Assessment
Petar Papić, Marina Ćuk, Maja Todorović, Jana Stojković, Bojan Hajdin, Nebojša Atanacković, Dušan Polomčić (2012)Petar Papić, Marina Ćuk, Maja Todorović, Jana Stojković, Bojan Hajdin, Nebojša Atanacković, Dušan Polomčić. "Arsenic in Tap Water of Serbia´s South Pannonian Basin and Arsenic Risk Assessment" in Polish Journal of Environmental Studies (2012)
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Garnet-andalusite/sillimanite-biotite xenoliths from the dacite of Slavkovica (Ljig, SW Serbia)
Vasković Nada, Batoćanin-Srećković Danica, Erić Suzana, Matović Vesna. "Garnet-andalusite/sillimanite-biotite xenoliths from the dacite of Slavkovica (Ljig, SW Serbia)" in Posebno izdanie na Geologica Macedonica/ Zbornik na trudovi/Third Congress of geologists of Republic of Macedonia Posebno izdanie na Geologica Macedonica/ Zbornik na trudovi/Third Congress of geologists of Republic of Macedonia 2 no. 4, Struga :Makedonsko-geološko društvo (2016): 389-393
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Осцилаторна зонарност везувијана из скарна Сусуле - Oscillatory zoning in vesuvianite from the skarn Susule.
Срећковић Батоћанин Даница, Ерић Сузана, Васић Небојша, Миловановић Драган. "Осцилаторна зонарност везувијана из скарна Сусуле - Oscillatory zoning in vesuvianite from the skarn Susule." in Записници Српског геолошког друштва за 2012. годину = Comptes Rendus des séances de la Société Serbe de géologie pour l année 2012 = Reports of the Serbian Geological Society for the year 2012, Beograd:Српско геолошко друштвo (2013): 1-18
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Interaction between binding materials—the cause of damage to gabbro stone on the monument to the unknown soldier (Serbia)
Matović Vesna, Vasković Nada, Erić Suzana, Srećković Batoćanin Danica. "Interaction between binding materials—the cause of damage to gabbro stone on the monument to the unknown soldier (Serbia)" in Environmental Earth Sciences 60 no. 6, :Springer (2010): 1153-1164. https://doi.org/10.1007/s12665-009-0257-4
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Hloritska geotermometrija na primeru hidrotermalno alterisanih vulkanita Rudnika (Srbija)
Erić Suzana, Srećković-Batoćanin Danica, Matović Vesna, Zdravković Alena. "Hloritska geotermometrija na primeru hidrotermalno alterisanih vulkanita Rudnika (Srbija)" in Zbornik apstrakata sa 17. Kongresa geologa Srbije-Nacionalni Kongres sa medjunarodnim učešćem, Vrnjačka Banja, 17-20.maj, 2018 no. 1, Beograd:Srpsko geološko društvo (2018): 48-52
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Experimental simulation of chemical weathering of limestone
Erić Suzana, Matović Vesna, Srećković Batoćanin Danica, Matović Nenad. "Experimental simulation of chemical weathering of limestone" in Proceedings / 3rd International Conference Harmony of Nature and Spirituality in Stone, 21-22 March 2013, Kragujevac, Serbia, Belgrade:Stone Studio Association (2013): 147-153
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Pinite in the contact aureole of the Brajkovac granitoid massif
Srećković Batoćanin Danica, Nikić Zoran, Erić Suzana, Vasković Nada. "Pinite in the contact aureole of the Brajkovac granitoid massif" in Proceedings / 3rd International Conference Harmony of Nature and Spirituality in Stone, 21-22 March 2013, Kragujevac, Serbia, Belgrade:Stone Studio Association (2013): 41-47
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Реликти океанске коре на Фрушкој гори, габрови и базалти Јаска -Relics of the Ocean Crust at the Fruska Gora Mountain, Gabbros and Basalts in the Jazak locality
Срећковић Батоћанин Даница, Васковић Нада, Матовић Весна, Ерић Сузана. "Реликти океанске коре на Фрушкој гори, габрови и базалти Јаска -Relics of the Ocean Crust at the Fruska Gora Mountain, Gabbros and Basalts in the Jazak locality" in Зборник радова 15. конгреса геолога Србије са међународним учешћем, Београд, [26-29 мај] 2010. = Proceedings of the 15th Congress of Geologists of Serbia with International Participation, Belgrade [26-29 May] 2010, Beograd:Srpsko geološko društvo, Savez geoloških inženjera i tehničara Srbije, geološki Institut Srbije, Rudarsko geološki fakultet Univerziteta u Beogradu (2010): 25-36
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The influence of rainfall factors on soil resistance to erosion
Nikola Živanović, Vukašin Rončević, Carla Ferreira, Milica Kašanin-Grubin, Stevan Ćorluka, Veljko Rupar, Vladimir Čebašek (2024)Nikola Živanović, Vukašin Rončević, Carla Ferreira, Milica Kašanin-Grubin, Stevan Ćorluka, Veljko Rupar, Vladimir Čebašek. "The influence of rainfall factors on soil resistance to erosion" in EGU General Assembly 2024, Vienna, Austria, Apr 14–19, 2024, Copernicus GmbH (2024). https://doi.org/10.5194/egusphere-egu24-1137
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Anisotropic grossular–andradite garnets: Evidence of two stage skarn evolution from Rudnik, Central Serbia
This paper presents LA-ICP-MS data for garnets from the Rudnik skarn deposit (Serbia), which range from Grs45–58Adr40–52Alm2–3 in the core and Adr70–97Grs2–29Sps1 in the rim displaying anisotropy and zoning. In spite of wide compositional variations the garnets near the end-member of andradite (Adr > 90) are generally isotropic. Fe-rich rims exhibit LREE depletion and flat HREE pattern with weak negative Eu anomaly, including higher As and W contents. On the other side, the Fe-poorer core shows flat REE pattern ...Bojan Kostić, Danica Srećković-Batoćanin, Petyo Filipov, Pavle Tančić, Kristijan Sokol. "Anisotropic grossular–andradite garnets: Evidence of two stage skarn evolution from Rudnik, Central Serbia" in Geologica Carpathica, Central Library of the Slovak Academy of Sciences (2021). https://doi.org/10.31577/GeolCarp.72.1.2
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Medical Domain Document Classification via Extraction of Taxonomy Concepts from MeSH Ontology
Mihailo Škorić, Mauro Dragoni (2019)This paper is a result of a task that was presented to attendants of Keyword Search in Big Linked Data summer school, that was organized by Vienna University of Technology, under the Keystone COST action in the summer of 2017. It presents a specific approach to the classification via creation of minimal document surrogates based on the US National medical library’s MeSH ontology, which is derived from the Medical Subject Headings thesaurus. In a series of previously classified medically ...Mihailo Škorić, Mauro Dragoni. "Medical Domain Document Classification via Extraction of Taxonomy Concepts from MeSH Ontology" in Infotheca, Faculty of Philology, University of Belgrade (2019). https://doi.org/10.18485/infotheca.2019.19.1.3
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Determining threaded machine element fabrication technology by pulsed thermography
Stevan Jovičić, Ljubiša Tomić, Aleksandar Kovačević, Nenad Munić, Vesna Damnjanović. "Determining threaded machine element fabrication technology by pulsed thermography" in Science of Sintering, National Library of Serbia (2024). https://doi.org/10.2298/sos240112005j