Претрага
227 items
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Development of integrated fuzzy model for mine management optimization
Miodrag Čelebić, Sanja Bajić, Dragoljub Bajić, Dejan Stevanović, Duško Torbica, Vladimir Malbašić (2023)... the focus of the paper. Study area and geology. The Bešpelj bauxite mine is located on a spacious karst plateau, on the right bank of the Vrbas River. It is at a beeline distance of 10 km from the town of Jajce to the north. The longer axis of deposit L-29C rends west-to-east (140 m), and the ...Miodrag Čelebić, Sanja Bajić, Dragoljub Bajić, Dejan Stevanović, Duško Torbica, Vladimir Malbašić. "Development of integrated fuzzy model for mine management optimization" in Comptes rendus de l'Académie Bulgare des Sciences (2023)
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Conversion of land areas after coal mine closure and reclamation
Otkopavanje uglja površinski i podzemno praćeno je degradacijom zemljišta, promenom formiranja predela i izmenom flore i faune. Od velikog značaja je razvoj novih naučno utemeljenih pristupa obnovljanje antropogeno poremećenih predela zasnovanih na formiranju rekultivacionih i rudarskih tehnologija. Apsolutno je neophodno obezbediti sveobuhvatno kvalitetno očuvanje zemljišnih i vodnih resursa i odrediti rekultivisano zemljište za novu namenu. U ovom članku je dat pregled najpopularnijih metoda rekultivacije zemljišta i mogućnosti rekultivacije zemljišta nakon završetka rekultivacije i zatvaranja rudnika uglja.... bulk overburden material is 40-50 m. The area belongs to “Drmno” open pit is in the eastern part of the Kostolac coal basin, 1.e., east of the Mlava River. (Figure 1) igure 1. Location of study area - Drmno The Kostolac mining and energy basin is part of the municipality of Kostolac and the Braničevo ...Radmila Gaćina, Bojan Dimitrijević, Sanja Bajić. "Conversion of land areas after coal mine closure and reclamation" in 9th International conference mining and environmental protection MEP 23 Proceedings, Sokobanja, 24-27.05.2023., Belgrade : University of Belgrade - Faculty of mining and geology (2023)
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Electronic Dictionaries - from File System to lemon Based Lexical Database
In this paper we discuss some well-known morphological descriptions used in various projects and applications (most notably MULTEXT-East and Unitex) and illustrate the encountered problems on Serbian. We have spotted four groups of problems: the lack of a value for an existing category, the lack of a category, the interdependence of values and categories lacking some description, and the lack of a support for some types of categories. At the same time, various descriptions often describe exactly the same ...... of Units is dl. Relations can exist between certain markers. For example, the hyperonymy/hyponymy relation exists between seman- tic markers: river (+River), which is a hydronym (+Hyd), which is a geographic concept (+Top), and thus all three are assigned to the lemma Dunav ‘Danube’. Some lemmas ...Ranka Stanković, Cvetana Krstev, Biljana Lazić, Mihailo Škorić. "Electronic Dictionaries - from File System to lemon Based Lexical Database" in Proceedings of the 11th International Conference on Language Resources and Evaluation - W23 6th Workshop on Linked Data in Linguistics : Towards Linguistic Data Science (LDL-2018), LREC 2018, Miyazaki, Japan, May 7-12, 2018, European Language Resources Association (ELRA) (2018)
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Parameter determination of soil oscillation law using quotient of the relative growth increments of oscillation velocity and reduced distances at “Nepričava“ open pit mine
... is situated at a distance of about 7.0 km west of town of Lajkovac, along the road and railroad Lajkovac - Valjevo, on the left bank of Kolubara River in the nearest vicinity of village of Slovac. The limestone deposit "Nepričava" is consisted of rock masses of sedimentary origin, which are not ...Suzana Lutovac, Sanja Bajić, Marina Ravilić, Radmila Gaćina. "Parameter determination of soil oscillation law using quotient of the relative growth increments of oscillation velocity and reduced distances at “Nepričava“ open pit mine" in Underground Mining Engineering, Belgrade : University of Belgrade, Faculty of Mining and Geology (2015). https://doi.org/10.5937/podrad1526009L
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Concepts for Improving Machine Learning Based Landslide Assessment
Miloš Marjanović, Mileva Samardžić Petrović, Biljana Abolmasov, Uroš Đurić. "Concepts for Improving Machine Learning Based Landslide Assessment" in Natural Hazards GIS-based Spatial Modeling Using Data Mining Techniques, Advances in Natural and Technological Hazards Research, volume 48, Springer Nature Switzerland AG 2019 (2019). https://doi.org/10.1007/978-3-319-73383-8_2
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Damage quantification of built stone on Dark Gate (Belgrade, Serbia): sample of damage index application for decay rate evaluation
The Dark Gate is the monument of culture, part of the cultural and historical complex of the Belgrade Fortress. It is constructed of limestone blocks that after 270 years of exposure to environmental conditions and different anthropogenic influences show wide ranges of decay forms. During 2007, detail registration of all built limestone microfacies and weathering forms was done using tools of monument mapping. A correlation scheme ‘‘intensity– damage category’’ was made according to the type, intensity, and distribution of ...... south facade. On the eastern side, the gate is leaning on the slope which descends from the Upper Town of the fortress, while on the western side River Sava is 50 meters away. According to the type of building material, the gate is a heterogeneous structure. South facade is built entirely of ...
... the faster drying process, the lower part of facades is influenced by the groundwater rising up. Additionally, gate position close to the Sava river (only 50 m away) also contributes to the higher moisture influ- ence on stone surface and rising velocity of decay pro- cesses. All of these sources ...Maja Franković, Nevenka Novaković, Vesna Matović. "Damage quantification of built stone on Dark Gate (Belgrade, Serbia): sample of damage index application for decay rate evaluation" in Environmental Earth Sciences, Springer Science and Business Media LLC (2015). https://doi.org/10.1007/s12665-014-3843-z
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Approach to operational mine planning: Case study Tamnava West
... Distance, power 2. A total of 25 coal sub-seam plies, 46 partings (14 sandstone and 32 clay), clay basement, interburden sandstone and overburden river sediments have been modeled within a stratigraphic section up to 98 m thick. The reason for so detail model lies in the fact that this model is ...Dejan Stevanović, Mirjana Banković, Milica Pešić Georgiadis, Ranka Stanković. "Approach to operational mine planning: Case study Tamnava West" in Tehnika, Beograd : Savez inženjera i tehničara Srbije (2014). https://doi.org/10.5937/tehnika1406952S
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Sitni, ali bitni: uloga sitnih sisara, herpetofaune i mekušaca u rekonstrukciji pleistocenskih paleosredina
Fosilni ostaci životinja i biljaka imaju važnu ulogu u rekonstrukciji pleistocenskih paleosredina. U ovom radu opisan je značaj tri grupe životinja: sitnih sisara, herpetofaune I mekušaca. Mada je za rekonstrukciju važan sastav čitave asocijacije, nalasci pojedinih vrsta mogu biti dovoljno indikativni da otkriju tip staništa ili klimatske uslove. Posebnu teškoću pri rekonstrukciji paleosredina u Srbiji predstavlja činjenica da klimatske promene na Balkanskom poluostrvu nisu bile tako oštre kao u srednjoj i zapadnoj Evropi, pa ne postoji drastična razlika u ...... such as whether the immediate environment was forest, steppe or open type (wet meadows to steppe), whether these are species that indicate marshy, river and lake environments or are in question forms that are exclusively related to loess and terrestrial living conditions, etc. Conclusion: The use ...Katarina Bogićević, Draženko Nenadić, Dragana Đurić, Mihajlo Jovanović, Aleksandra Savković. "Sitni, ali bitni: uloga sitnih sisara, herpetofaune i mekušaca u rekonstrukciji pleistocenskih paleosredina" in Zbornik sažetaka III Kongresa geologa Bosne i Hercegovine, Neum, 21.-23.09.2023., Ilidža : Udruženje geologa Bosne i Hercegovine (2023)
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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... “Bezdan 1”. Tehnika, 65 (6): 956–962 (in Serbian, English summary). SINGH A.P., GHOSH S.K., SHARMA P. (2007). Water quality management of a stretch of river Yamuna: aninteractive fuzzy multi-objective approach. Water Resource Mana- gement, 21: 515–532. UDDAMERI V., HERNANDEZ, A.E. & ESTRADA, F. (2014) ...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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Part of Speech Tagging for Serbian language using Natural Language Toolkit
Ranka Stanković, Boro Milovanović (2020)Dok se razvijaju složeni algoritmi za NLP (obrada prirodnog jezika), osnovni zadaci kao što je označavanje ostaju veoma važni i još uvek izazovni. NLTK (Natural Language Toolkit) je moćna Python biblioteka za razvoj programa zasnovanih na NLP-u. Pokušavamo da iskoristimo ovu biblioteku za kreiranje PoS (vrsta reči) oznake za savremeni srpski jezik. Jedanaest različitih modela je kreirano korišćenjem NLTK API-ja za označavanje. Najbolji modeli se transformišu sa Brill tagerom da bi se poboljšala tačnost. Obučili smo modele na označenom ...... https://python- crfsuite.readthedocs.io, 2014 [19] X. Huang, A. Acero, H. Hon, “Hidden Markov Models” in Spoken Language Processing, Upper Saddle River, New Jersey: USA, ch. 8, sec. 2, pp. 378-391 [20] H. Daume III, “Frustratingly Easy Domain Adaptation,” Proc. 45th Annual Meeting of the Association ...Ranka Stanković, Boro Milovanović. "Part of Speech Tagging for Serbian language using Natural Language Toolkit" in 7th International Conference on Electrical, Electronic and Computing Engineering IcETRAN 2020, Academic Mind, Belgrade (2020)
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A comparative study of the molecular and isotopic composition of biomarkers in immature oil shale (Aleksinac deposit, Serbia) and its liquid pyrolysis products (open and closed systems)
Gordana Gajica, Aleksandra Šajnović, Ksenija Stojanović, Jan Schwarzbauer, Aleksandar Kostić, Branimir Jovančićević (2021)The molecular and isotopic composition of biomarkers in initial bitumen isolated from immature (0.41% Rr) oil shale samples (Aleksinac deposit) and liquid products obtained by pyrolysis in open (OS) and closed (CS) systems are studied. The influence of pyrolysis type and variations of kerogen type on biomarkers composition and their isotopic signatures in liquid products is determined. The applicability of pyrolysis type, numerous biomarkers and carbon isotopic compositions (δ13C) of n-alkanes in liquid pyrolysates is established. Pyrolysis experiments were ...Uljni šejl, Aleksinac, organska supstanca, otvoreni i zatvoreni sistem pirolize, biomarkeri, izotopski sastav ugljjenikaGordana Gajica, Aleksandra Šajnović, Ksenija Stojanović, Jan Schwarzbauer, Aleksandar Kostić, Branimir Jovančićević. "A comparative study of the molecular and isotopic composition of biomarkers in immature oil shale (Aleksinac deposit, Serbia) and its liquid pyrolysis products (open and closed systems)" in Marine and Petroleum Geology, Elsevier BV (2021). https://doi.org/10.1016/j.marpetgeo.2021.105383
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Evidence of Variscan and Alpine tectonics in the structural and thermochronological record of the central Serbo-Macedonian Massif (south-eastern Serbia)
... Ar/Ar thermochronology · Variscan orogeny · Serbia Introduction Crystalline terranes within the KEastern Mediterranean Alpine orogen (e.g. Tisza, Pelagonia, Rhodope, Serbo- Macedonian Massif) commonly display a high degree of structural complexity resulting from the interplay between inherited ...
... adria-derived thrust sheets Miocene thrust belt O adria plate I Tethyan ophiolites | Europe-derived units — Rhodope complex External foredeep B Tisza mega-unit BII suture of Ceahlžu-Severin Ocean Fig.1 Tectonic map of the Balkan Peninsula (modified after Schmid et al. 2008; van Hinsbergen and ...
... zone (Fig. 6). Vranjska Banja area Metamorphic rocks of Vranjska Banja area, located between the Surdulica granodiorite and the Južna Morava River (Fig. 2), were traditionally attributed to Vlasina Unit, although they show evidence of higher metamorphic grade than the greenschist facies typical ...Milorad D. Antić, Alexandre Kounov, Branislav Trivić, Richard Spikings, Andreas Wetzel. "Evidence of Variscan and Alpine tectonics in the structural and thermochronological record of the central Serbo-Macedonian Massif (south-eastern Serbia)" in International Journal of Earth Sciences, Springer Science and Business Media LLC (2016). https://doi.org/10.1007/s00531-016-1380-6
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Srbija u OneGeology Europe
Геолошки завод Србије као носилац Пројекта ОneGeologyEurope заједно са Рударско геолошким факултетом и Министарством за природне ресурсе, рударство и просторно планирање су се укључили у међународни Пројекат OneGeology Europe у мају 2013. године у већ поодмаклој фази израде Пројекта. До краја 2013. године испунили су завршене активности које треба да доведу до пуноправног укључења у Пројекат чиме је Република Србија нашла своје место на Геолошкој карти Европе 1:1М. Геолошка карта Србије 1:1М представља компилациону односно поједностављену верзију ОГК 1:500 ...... iD | Age lithology litologiia New_age [New| _New_jtology New_Description OQuartemary — Water flows Vodeni tokovi Quatemary 0 Eartsurface deposits River plain system 4 Quarternary Holocene in general Holocen uopate 2 Quartemary Pleistocene in general Pleistocen uopste ee 3 Quarternary _Quarternary in ...
... uopate Quatemary | 4 Terrestrial deposits Se Cae 1241 up. ptht 1.21.34 4 Quartemary Loess Les 5 Quarterary _Eolian sands Eolski pesak Quaternary and) River-lacustine 7 Pliocene _Pliocene-Quarternary: unconsolidated sediments Pliocen-kvartar nevezani sediment Pliocene deposits (Crane Ea (2112 geld FB daily ...Danka Blagojević, Ranka Stanković, Petar Stejić, Velizar Nikolić. "Srbija u OneGeology Europe" in Zapisnici Srpskog geološkog društva za 2013. godinu, Beograd : Srpsko geološko društvo (2014)
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State and perspective of individual household heating in Serbia: A survey-based study
This paper presents the results of the household survey on individual household heating systems in Serbia. The survey was conducted in the period October to December 2020 with the participation of 1100 households with individual household heating systems. The information collected in the questionnaire can be separated into three main parts: basic household data, current heating system characteristics, and households’ perceptions and attitudes. The survey results provide unique and comprehensive information concerning individual household heating systems and the main ...Boban Pavlović, Dejan Ivezić, Marija Živković. "State and perspective of individual household heating in Serbia: A survey-based study" in Energy and Buildings, Elsevier BV (2021). https://doi.org/10.1016/j.enbuild.2021.111128
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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... construction. Currently, approx. 60,000 inhabitants are connected to the existing plant. Data on average monthly temperature of treated water and river Sava (recipient) are presented in Table 3. Even in the winter period, the temperature of treated water is higher than 11 °C, so it is adopted to be ...
... Serbian electricity sector, dominantly based on lignite-fuelled thermal power plants (Statistical Office of Table 3 Temperature of treated water and river Sava (recipient), (°C) Month Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Treated water 11.1 11.3 14.1 15.9 18.8 22.2 23.8 24.2 21.8 19.7 15.8 ...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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The Importance of Detailed Groundwater Monitoring for Underground Structure in Karst (Case Study: HPP Pirot, Southeastern Serbia)
... Dag Banjica, Glame, Dobri Do and Nišor), the observation wells along the tunnel (PP-1, PP-3 and PP-4), a surface water reservoir and the Dobrodolska River. Monitoring within the tunnel and at the control gate was conducted while the tunnel was out of operation. Water 2019, 11, 603 4 of 10 Summary losses ...Marina Čokorilo Ilić, Ana Mladenović, Marina Ćuk, Igor Jemcov. "The Importance of Detailed Groundwater Monitoring for Underground Structure in Karst (Case Study: HPP Pirot, Southeastern Serbia)" in Water, MDPI AG (2019). https://doi.org/10.3390/w11030603
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Uticaj proširenja nuklearne elektrane “Pakš” (Mađarska) na resurse podzemnih voda u Vojvodini
Bojan Hajdin, Dušan Polomčić (2016)... current decision of the neighbouring Republic of Hungary to enlarge the capacities of the existing nuclear power plant „Paks“, located on the Danube river, by two new reactors, poses a significant issue which requires extensive assessment of all aspects of the impact of such a decision on the enviroment ...Bojan Hajdin, Dušan Polomčić. "Uticaj proširenja nuklearne elektrane “Pakš” (Mađarska) na resurse podzemnih voda u Vojvodini" in Tehnika 66 no. 5, Beograd : Savez inženjera i tehničara (2016): 777-786. https://doi.org/10.5937/tehnika1604545H
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A Fuzzy Expert Model for Availability Evaluation
Each technical system within itself carries the great potential danger of possible occurrence of failure and damages. Mining machines are characteristic by great investment values, costs of unplanned shutdowns, complex working conditions, and environment and workers hazards. Systematic monitoring of the mining machinery is of great importance for the management of the mining companies. Availability is the overall concept of quality of service. Includes information regard to operating state, an idle state, a standby state and shut down. The ...... Serbia, 28. Sep - 01. Oct, 2016. [6] G. Klir G.J., Yuan B., Fuzzy sets and fuzzy logic: theory and applications, Prentice-Hall, Inc. Upper Saddle River, NJ, USA [7] Kabir S., Papadopoulos Y., A review of applications of fuzzy sets to safety and reliability engineering, International Journal of ...Dejan Ivezić, Miloš Tanasijević, Predrag Jovančić, Radiša Đurić. "A Fuzzy Expert Model for Availability Evaluation" in Proceedings of the 2019 20th International Carpathian Control Conference (ICCC), AGH University of Science and Technology, Kraków - Wieliczka, Poland (2019)
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Advantages and Disadvantages of a Parallel and Zigzag Method of Acquisition in Walking Mode in Magnetometric Archeological Research
магнетометријска испитивања, цик-цак и паралелна аквизиција у ходајућем моду, линеарне аномалије, археологија... University Press. McCullough, R. 2007 Geophysical survey and limited test exvatinos to locate the Hargrove Cemetery on a land par- cel in the Patoka River National Wildlife Refuge and management Area near Oakland City, Gibson Country, Indiana, Ph.D Tessis, Indiana University. Smekalova T.N., Voss ...Mirko Petković, Vesna Cvetkov, Branislav Sretenović. "Advantages and Disadvantages of a Parallel and Zigzag Method of Acquisition in Walking Mode in Magnetometric Archeological Research" in Arheologija i prirodne nauke (2014)
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Održivo korišćenje mađarsko-srpskih međugraničnih vodnih tela
Dušan Polomčić, Zoran Stevanović, Saša Milanović, Stanko Sorajić, Bojan Hajdin, Željko Kljajić (2010)... granica zadatog kapaciteta • grani ni uslov "drenaža" (engl. "Drainge Boundary") • granica konstantnog potencijala • grani ni uslov reka (engl. "River Boundary"). Grani ni uslovi su zadavani u stacionarnim i nestacionarnim uslovima, prema kvalitetu i broju pribavljenih podataka. Na podru ju severne ...
... Boundary") granica zadatog kapaciteta grani¢ni uslov "drenaza" (engl. "Drainge Boundary") granica konstantnog potencijala grani¢ni uslov reka (engl. "River Boundary"). Grani¢éni_ uslovi su zadavani u_ stacionarnim i nestacionarnim uslovima, prema kvalitetu i broju pribavljenih podataka. Na podrucju severne ...Dušan Polomčić, Zoran Stevanović, Saša Milanović, Stanko Sorajić, Bojan Hajdin, Željko Kljajić. "Održivo korišćenje mađarsko-srpskih međugraničnih vodnih tela" in Vodoprivreda 42 no. 04-Jun, Beograd : Jugoslovensko društvo za odvodnjavanje i navodnjavanje (2010): 223-235