Претрага
512 items
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Characterization and Environmental Evaluation of Recycled Aggregates from Construction and Demolition Waste in Belgrade City Area (Serbia)
Filip Abramović, Miroslav Popović, Vladimir Simić, Vesna Matović, Radmila Šerović. "Characterization and Environmental Evaluation of Recycled Aggregates from Construction and Demolition Waste in Belgrade City Area (Serbia)" in Materials, MDPI AG (2024). https://doi.org/10.3390/ma17040820
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A WebGIS Decision Support System for Management of Abandoned Mines
Ranka Stanković, Nikola Vulović, Nikola Lilić, Ivan Obradović, Radule Tošović, Milica Pešić-Georgiadis (2016)... [12]. 2.4. The Classification Method of Abandoned Mines 2.4.1. Analytic Hierarchy Process The Analytic Hierarchy Process (AHP) method used within this project is considered to be one of the most commonly used methods for multi-criteria decision making. The method of analytical hierarchy process ...
... or national park. Statistics of mining facilities and results of remote sensing by property type, by district, municipality, by mineral resource or method of registration and the like are also available. Apart from general statistics related to polygons obtained by remote sensing and classified by property ...
... decision-making as well as in decision-making itself when complex problems encompassing goals, criteria, sub-criteria and alternatives are solved. The method was devised in the 1970s by Saaty [13]. From the methodological point of view, AHP is a multi-criteria technique based on the decomposition of a complex ...Ranka Stanković, Nikola Vulović, Nikola Lilić, Ivan Obradović, Radule Tošović, Milica Pešić-Georgiadis. "A WebGIS Decision Support System for Management of Abandoned Mines" in Energies 7 no. 9 (2016): 567. https://doi.org/10.3390/en9070567
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Novel Methods in Multiple Criteria Decision-Making Process (MCRAT and RAPS)—Application in the Mining Industry
Multiple criteria decision making (MCDM) is a supporting tool which is widely spread in different areas of science and industry. Many researchers have confirmed that MCDM methods can be useful for selecting the best solution in many different problems. In this paper, two novel methods are presented and applied on existing decision-making processes in the mining industry. The first method is multiple criteria ranking by alternative trace (MCRAT) and the second is ranking alternatives by perimeter similarity (RAPS). These ...Katarina Urošević, Zoran Gligorić, Igor MIljanović, Čedomir Beljić, Miloš Gligorić. "Novel Methods in Multiple Criteria Decision-Making Process (MCRAT and RAPS)—Application in the Mining Industry" in Mathematics, MDPI (Basel, Switzerland) (2021). https://doi.org/10.3390/math9161980
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Flyrock Induced by Blasting in Surface Mining
Milanka Negovanović, Lazar Kričak, Snežana Ignjatović, Stefan Milanović, Jovan Marković, Nikola Simić, Rade Šarac (2022)Минирање представља и даље најефикаснији и најјефтинији начин експлоатације великих количина чврстих минералних сировина на површинским коповима. Енергија експлозије се користи за фрагментацију чврсте стенске масе до захтеване гранулације. Поред позитивних ефеката минирања, постоје и одређени нежељени ефекти сваког процеса минирања који се могу јавити, а то су: потреси тла, разлетање комада стене, ваздушни удари, отровни и загушљиви гасови и прашина. Разлетање комада стене је неконтролисано избацивање фрагмената одминиране стенске масе и представља један од главних извора материјалне ...Milanka Negovanović, Lazar Kričak, Snežana Ignjatović, Stefan Milanović, Jovan Marković, Nikola Simić, Rade Šarac. "Flyrock Induced by Blasting in Surface Mining" in 8th Balkan Mining Congress, Belgrade, September 28-30, 2022, Mining Institute Ltd, Belgrade (2022)
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Novel cerium and praseodymium doped phosphate tungsten bronzes: Synthesis, characterization, the behavior in the Briggs-Rauscher reaction and photoluminescence properties
Tijana Maksimović, Pavle Tančić, Jelena Maksimović, Dimitrije Mara, Marija Ilić, Rik Van Deun, Ljubinka Joksović, Maja Pagnacco (2023)Due to the interesting and potentially useful properties, phosphate tungsten bronzes are constantly being studied and attract a lot of attention. In the present work, two different metallic elements, belonging to the group of rare-earth metals, cerium and praseodymium, were used as a dopants for phosphate tungsten bronzes. Novel cerium and praseodymium doped phosphate tungsten bronzes were successfully synthesized and further characterized by thermal analyses, Fourier-transform infrared spectroscopy, X-ray powder diffraction, scanning electron microscopy with energy-dispersive X-ray spectrometer and ...Electrical and Electronic Engineering, Atomic and Molecular Physics and Optics, Electronic, Optical and Magnetic Materials, Inorganic Chemistry, Organic Chemistry, Physical and Theoretical Chemistry, SpectroscopyTijana Maksimović, Pavle Tančić, Jelena Maksimović, Dimitrije Mara, Marija Ilić, Rik Van Deun, Ljubinka Joksović, Maja Pagnacco. "Novel cerium and praseodymium doped phosphate tungsten bronzes: Synthesis, characterization, the behavior in the Briggs-Rauscher reaction and photoluminescence properties" in Optical Materials, Elsevier BV (2023). https://doi.org/10.1016/j.optmat.2023.114125
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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 ...... forest dwellers are more common. Methods of reconstruction: The simplest and at the same time the most frequently used method for habitat type reconstruction is the method of ecological groups. For each species, it is determined in which group of habitats it most often lives today, and then the ...
... representation of each group in the entire fauna is calculated. One of the variants is the TH- index method, where the affinity for 9 habitat types is determined for each species. Another common method for habitat type reconstruction is the creation of a cenogram. Small mammals are also used to reconstruct ...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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Two approaches to compilation of bilingual multi-word terminology lists from lexical resources
In this paper, we present two approaches and the implemented system for bilingual terminology extraction that rely on an aligned bilingual domain corpus, a terminology extractor for a target language, and a tool for chunk alignment. The two approaches differ in the way terminology for the source language is obtained: the first relies on an existing domain terminology lexicon, while the second one uses a term extraction tool. For both approaches, four experiments were performed with two parameters being ...Branislava Šandrih, Cvetana Krstev, Ranka Stanković. "Two approaches to compilation of bilingual multi-word terminology lists from lexical resources" in Natural Language Engineering, Cambridge University Press (CUP) (2020). https://doi.org/10.1017/S1351324919000615
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Primary crusher site selection in open pit mines - case study in Sungun copper mine
Facility site selection, (such as Primary or in pit Crusher location) is one of the most important steps in mine de-sign process that has a significant impact on economy of the mining operation. This study covers an attempt to find the optimal location forprimary crusher in order to support the expansion of Sungun copper mine, which is the second largest open pit mine in Iran. Recent exploration drilling has led to a considerable increase in the ore reserve. Therefore, ...Ali Nasirinezhad, Dejan Stevanović, Dragan Ignjatović, Mehdi Rahmanpou. "Primary crusher site selection in open pit mines - case study in Sungun copper mine" in Underground mining engineering, Универзитет у Београду, Рударско-геолошки факултет (2021)
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Simpson's rule application for experimental determining parameters of rock mass oscillation equation at limestone
By its form, the use of explosives has a destructive character. However, energy of chemical explosives is tamed and perfected in many effects, so that is developed a series of activities which work is unthinkable without the use of explosives. In mining industry, explosives are most commonly used for exploitation in hard rock mass. Thereby, large amounts of explosives can be used, especially for mass blasting. The application of large amounts of explosives gives auspicious techno – economic indicators ...working environment, seismic effects of blasting, oscillation velocity, rock mass oscillation equation, Simpson’s ruleSuzana Lutovac, Miloš Gligorić, Jelena Majstorović, Branko Gluščević, Luka Crnogorac. "Simpson's rule application for experimental determining parameters of rock mass oscillation equation at limestone" in 8th International Conference Mining and Environmental Protection, University of Belgrade, Faculty of Mining and Geology, Belgrade, Serbia (2021)
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A treatise about reliability in dating events of evolutionary history of brown trout Salmo cf. trutta (Actinopterygii) at Western Balkans: Impassable barriers, isolation of populations and assistance of geological timeframe
Ana Marić, Danica Srećković Batoćanin, Dubravka Škraba Jurlina, Miloš Brkušanin, Jelena Karanović, Tamara Kanjuh, Vera Nikolić, Danilo Mrdak, Predrag Simonović (2023)Distribucija različitih haplotipova pastrmke u zavisnosti od geoloških dogadjaja.Ana Marić, Danica Srećković Batoćanin, Dubravka Škraba Jurlina, Miloš Brkušanin, Jelena Karanović, Tamara Kanjuh, Vera Nikolić, Danilo Mrdak, Predrag Simonović. "A treatise about reliability in dating events of evolutionary history of brown trout Salmo cf. trutta (Actinopterygii) at Western Balkans: Impassable barriers, isolation of populations and assistance of geological timeframe" in Acta Ichthyologica et Piscatoria, Pensoft Publishers (2023). https://doi.org/ 10.3897/aiep.53.97702
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Multi-Criteria Fuzzy-Stochastic Diffusion Model of Groundwater Control System Selection
When considering data and parameters in hydrogeology, there are often questions of uncertainty, vagueness, and imprecision in terms of the quantity of spatial distribution. To overcome such problems, certain data may be subjectively expressed in the form of expert judgment, whereby a heuristic approach and the use of fuzzy logic are required. In this way, decision-making criteria relating to an optimal groundwater control system do not always have a numerical value. Groundwater control scenarios (alternatives) are identified through hydrodynamic ...expert judgment, linguistic variables, fuzzy dynamic TOPSIS, hydrogeology, groundwater control system, open-cast mine, geometric Brownian motionDušan Polomčić, Zoran Gligorić, Dragoljub Bajić, Miloš Gligorić, Milanka Negovanović. "Multi-Criteria Fuzzy-Stochastic Diffusion Model of Groundwater Control System Selection" in Symmetry, MDPI AG (2019). https://doi.org/10.3390/sym11050705
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Preliminary impact assessment of No2 emission from a heating plant on air pollution: case of Zemun, Serbia
The aim of this paper is to provide a preliminary evaluation of the impact caused by NO2 emissions from a heating plant on the local air quality. To model the spatial distribution of NO2 emissions from the heating plant, the AERMOD model was employed. The evaluation was conducted by analyzing and contrasting the simulated NO2 concentration from the heating plant with the overall NO2 concentration recorded at the nearest monitoring station over the entire heating season. The study focused ...Boban Pavlović, Uroš Pantelić, Marija Živković, Dejan Ivezić. "Preliminary impact assessment of No2 emission from a heating plant on air pollution: case of Zemun, Serbia" in Environmental Engineering and Management Journal (2023). https://doi.org/10.30638/eemj.2023.086
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Surface functional groups and degree of carbonization of selected chars from different processes and feedstock
Marija Ilić, Franz-Hubert Haegel, Aleksandar Lolić, Zoran Nedić, Tomislav Tosti, Ivana Sredović Ignjatović, Andreas Linden, Nicolai D. Jablonowski, Heinrich Hartmann (2022)The knowledge ofthe structural and chemical properties of biochars is decisive for their application as technical products. For this reason, methods for the characterization of biochars that are generally applicable and allow quality control are highly desired. Several methods that have shown potential in other studies were used to investigate two activated carbons and seven biochars from different processes and feedstock. The chars were chosen to cover a wide range of chemical composition and structural properties as a hardness ...Biougalj, različiti procesi dobijanja, različite sirovine, površinski aktivne grupe, x-ray, FT-IR,XPS... spectroscopic properties of biochars. XPS is a powerful method for identifying functional groups and the degree of carbonization at the surface of biochar particles, but yields only semi-quantitative results regarding the large error of the method. It is also not clear what is the relevant result for ...
... It is there- fore no method for quality control, but it is valuable for an integrated evaluation of data from other methods (chemical analysis, XRD, FT-IR, Raman and SIP). The results strongly support the classification of the investigated chars by the production method. FT-IR spectra of hydrochars ...
... allows a rough characterization of surface functional groups, but cannolt discriminate aliphatic and aromatic OH groups. FT-IR might be a suitable method for the quality control of biochars made at lower temperature. The results of Raman spec- troscopy did not well correlate with the amount of sp ...Marija Ilić, Franz-Hubert Haegel, Aleksandar Lolić, Zoran Nedić, Tomislav Tosti, Ivana Sredović Ignjatović, Andreas Linden, Nicolai D. Jablonowski, Heinrich Hartmann. "Surface functional groups and degree of carbonization of selected chars from different processes and feedstock" in PLOS ONE (2022). https://doi.org/10.1371/journal.pone.0277365
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Extensive vibrations of the belt conveyer drive electromotor of a bucket wheel excavator as a result of intesified wear-and-tear of its mount support
Vesna Damnjanović, Predrag Jovančić, Snežana Aleksandrović. "Extensive vibrations of the belt conveyer drive electromotor of a bucket wheel excavator as a result of intesified wear-and-tear of its mount support" in Journal of Vibroengineering (2017). https://doi.org/10.21595/jve.2016.17321
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Analiza primene višekriterijumskih metoda u optimizaciji izbora hidruličnih bagera na površinskim kopovima uglja
Hidraulični bageri primenjuju se u različitim oblastima privrede a najzastupljeniji su u građevinarstvu i rudarstvu. Na površinskim kopovima sa kontinualnim sistemima, klasifikuju kao pomoćna mehanizacija a na površinskim kopovima sa diskontinualnim sistemima, kao osnovna mehanizacija. Kako je u oba slučaja njihova primena neizostavna, važno je izvršiti adekvatnu analizu postojećih podataka, u cilju optimizacije izbora tipa hidrauličnog bagera u odnosu na uslove rada datog površinskog kopa. U radu su opisane različite višekriterijumske metode koje su korišćene za analizu hidrauličnih bagera. ...... višekriterijumske metode su: AHP - Analytical Hierarchy Process [8], Thomas L. Saaty PROMETHEE (I, II) - Preference ranking orga- nization method for enrichment evaluation [9], Jean-Pierre Barns TOPSIS - Technique for Order of Preference by Similarity to Ideal Solution [10], Ching-Lai ...
... postojećih podataka o radu hidrauličnih bagera. Korišćene su: metoda AHP (Analytical Hierarchy Process), PROMETHEE (Prefe- rence ranking organization method for enrichment evaluation), TOPSIS (Technique for Order of Prefe- rence by Similarity to Ideal Solution), VIKOR (Multi- criteria Optimization and ...
... Energy, 34, pp. 112-125, 2009. DOI: 10.1016/j.energy.2008.09.004 [10] Ashrafzadeh M, Rafiei F M, Isfahani M-N, Zare Z, Application of fuzzy TOPSIS method for the sele- ction of Warehouse Location: A Case Study. Interdi- sciplinary, Journal Of Contemporary Research In Business, 3, pp. 655-671, 2012 ...Stevan Đenadić, Predrag Jovančić, Dragan Ignjatović, Filip Miletić, Ivan Janković. "Analiza primene višekriterijumskih metoda u optimizaciji izbora hidruličnih bagera na površinskim kopovima uglja" in Tehnika, Centre for Evaluation in Education and Science (CEON/CEES) (2019). https://doi.org/10.5937/tehnika1903369D
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Machine learning based landslide assessment of the Belgrade metropolitan area: Pixel resolution effects and a cross-scaling concept
Improvements of Machine Learning-based landslide prediction models can be made by optimizing scale, customizing training samples to provide sets with the best examples, feature selection, etc. Herein, a novel approach, named Cross-Scaling, is proposed that includes the mixing of training and testing set resolutions. Hypothetically, training on a coarser resolution dataset and testing the model on a finer resolution should help the algorithm to better generalize ambiguous examples of landslide classes and yield fewer over/underestimations in the model. This ...Uroš Đurić, Miloš Marjanović, Zoran Radić, Biljana Abolmasov. " Machine learning based landslide assessment of the Belgrade metropolitan area: Pixel resolution effects and a cross-scaling concept" in Engineering Geology , Elsevier (2019). https://doi.org/10.1016/j.enggeo.2019.05.007
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Sustainable Modularity Approach to Facilities Development Based on Geothermal Energy Potential
The study presented in this paper assessed the multidisciplinary approach of geothermal potential in the area of the most southeastern part of the Pannonian basin, focused on resources utilization. This study aims to present a method for the cascade use of geothermal energy as a source of thermal energy for space heating and cooling and as a resource for balneological purposes. Two particular sites were selected—one in a natural environment; the other within a small settlement. Geothermal resources come ...геотермална енергија, Панонски басен, геотермална каскада, енергетска ефикасност, бањски центри, балнеологија, биоклиматска архитектура, стратегије пасивног дизајнирања, модуларни објекти... and chemical characteristics have been analyzed simultaneously to define the method for balneological use (drinking, swimming, inhalation). Furthermore, the concept of the geothermal heating system is conditioned by the method of balneological application. For example, drinking does not consider temperature ...
... (temperature, chemical composition, flow capacity). For the purpose of geothermal wa- ter and reservoir characterization, the D’Amore method and diagram was applied [42]. The method is based on the determination of six main genetic parameters, mainly based on cation–anion ratios. Calculated genetic parameters ...
... geothermal potential in the area of the most southeastern part of the Pannonian basin, focused on resources utilization. This study aims to present a method for the cascade use of geothermal energy as a source of thermal energy for space heating and cooling and as a resource for balneological purposes. ...Nataša Čuković-Ignjatović, Ana Vranješ, Dušan Ignjatović, Dejan Milenić, Olivera Krunić. "Sustainable Modularity Approach to Facilities Development Based on Geothermal Energy Potential" in Applied Sciences-Basel, МDPI (2021). https://doi.org/10.3390/app11062691
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Geotechnical effects of municipal solid waste destruction with different compaction methods
Jovana M Janković Pantić, Dragoslav R Rakić, Irena G Basarić Ikodinović, Tina D Đurić, Gordana Hadži-Niković (2022)Disposal of waste in municipal solid waste landfills is the only way of waste disposal in Serbia, with daily compaction and covering with soil material. Due to less space for the construction of new landfills, it is necessary to use their maximum capacity. Well-compacted municipal solid waste takes up less volume and enables safer storage, so it is useful to previously determine the compaction parameters in the laboratory: maximum dry unit weight (γdmax) and optimal water content (wopt). In ...Jovana M Janković Pantić, Dragoslav R Rakić, Irena G Basarić Ikodinović, Tina D Đurić, Gordana Hadži-Niković. "Geotechnical effects of municipal solid waste destruction with different compaction methods" in Доклади на Българската академия на науките Comptes rendus de l’Acad´emie bulgare des Sciences (2022). https://doi.org/10.7546/CRABS.2022.01.13
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Influence of Post-Synthesis Treatments on the Properties of Brushite/Monetite Powders
Željko Radovanović, Lidija Radovanović, Aleksandar Kremenović, Đorđe Janaćković, Rada Petrović (2022)Dicalcium phosphate (DP) materials, of which brushite and monetite were the most known, have been intensively studied for several decades because of excellent resorptive and osteoconductive properties that can satisfy the requirements needed for various medical applications, such as bone cements, coatings of metallic implants and bone grafts ...Željko Radovanović, Lidija Radovanović, Aleksandar Kremenović, Đorđe Janaćković, Rada Petrović. "Influence of Post-Synthesis Treatments on the Properties of Brushite/Monetite Powders " in Second International Conference on Electron Microscopy of Nanostructures ELMINA 2022, August 22nd–26th, 2022, Belgrade, Serbia, Serbian Academy of Sciences and Arts Knez Mihailova 35, 11000 Belgrade, Serbia (2022)
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Towards translation of educational resources using GIZA++
... examples of segmented XML texts: English left and Serbian right Document with the extension _fs contains the information about paired segments. The method used in the alignment is based on the number of characters (length of the segment). This approach is very successful (on the average as much as ...
... corpus of texts related to education, finance, health and law, aligned at the sentence level within Intera project. The corpus was lemmatized and the method applied on lemmas of word forms from the corpus, by extracting candidate translational equivalents through a ranking based on lemma frequencies ...
... and cleaning. At the end, the language model (LM) is used to ensure fluent output, and is thus built with the target language. The presented method yielded promising results, but bigger corpus is needed for better results. Therefore, great efforts are being made for additional text alignment ...Ivan Obradović, Dalibor Vorkapić, Ranka Stanković, Nikola Vulović, Miladin Kotorčević. "Towards translation of educational resources using GIZA++" in The Seventh International Conference on e-Learning (eLearning-2016), September 2016, Belgrade : Metropolitan Univesity (2016)