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143 items
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A fuzzy-based decision support model for effectiveness evaluation - a case study of examination of bulldozers
Effectiveness evaluation is one of the basic components of engineering asset management and maintenance engineering in general. Effectiveness is an overall concept representing a measurement of quality of service level for the analyzed engineering system. This concept contains a series of partial indicators relating to time in operation and time for maintenance activities, as well as functional properties of the system. This article describes the analysis and structuring of partial indicators, as well as the development of a model ...Miloš Tanasijević, Predrag Jovančić, Dejan Ivezić, Uglješa Bugarić, Radiša Đurić. "A fuzzy-based decision support model for effectiveness evaluation - a case study of examination of bulldozers" in International Journal of Industrial Engineering: Theory, Applications and Practice (2019)
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Geochemical characterization of sediments from the archaeological site Vinča – Belo Brdo, Serbia
Gorica Veselinović, Dragana Životić, Kristina Penezić, Milica Kašanin-Grubin, Nevenka Mijatović, Jovana Malbašić, Aleksandra Šajnović (2020)Gorica Veselinović, Dragana Životić, Kristina Penezić, Milica Kašanin-Grubin, Nevenka Mijatović, Jovana Malbašić, Aleksandra Šajnović. "Geochemical characterization of sediments from the archaeological site Vinča – Belo Brdo, Serbia" in CATENA, Elsevier BV (2020). https://doi.org/10.1016/j.catena.2020.104914
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Моделирање утицаја одступања линије најмањех отпора од пројектоване на интензитет потреса од минирања
Стефан Милановић (2024)Према дефиницији линија најмањег отпора представља најкраће растојање од центра минског пуњења до слободне површине. Oвим истраживањем представљен је утицај линије најмањег отпора, као и њеног одступања од пројектоване на интезитет потреса услед минирања. Проблем линије најмањег отпора је веома заступљен у пракси, где се занемарује изглед слободне површине, који може бити врло неправилан. Линију најмањег отпора је потребно мерити целом дужином минске бушотине према слободној површини, иако је у пракси случај да се мери најчешће као растојање од ...линија најмањег отпора, 3D модел, потреси услед минирања, минирање, слободна површина, метода раздвојених елеменатаСтефан Милановић. Моделирање утицаја одступања линије најмањех отпора од пројектоване на интензитет потреса од минирања, Београд : [С. Милановић], 2024
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Cutting Resistance Laboratory Testing Methodology for Underwater Coal Mining
... Resistance Laboratory Testing Methodology for Underwater Coal Mining. Minerals 2021, 11, 564. https://doi.org/10.3390/min11060564 Academic Editor: Yang Ju Received: 26 April 2021 Accepted: 17 May 2021 Published: 25 May 2021 Publisher’s Note: MDPI stays neutral with regard to jurisdictional claims ...
... Resistance Laboratory Testing Methodology for Underwater Coal Mining. Minerals 2021, 11, 564. https: / /doi.org/10.3390/min11060564 Academic Editor: Yang Ju Received: 26 April 2021 Accepted: 17 May 2021 Published: 25 May 2021 Publisher’s Note: MDPI stays neutral with regard to jurisdictional claims ...Vladimir Čebašek, Veljko Rupar, Stevan Đenadić, Filip Miletić. "Cutting Resistance Laboratory Testing Methodology for Underwater Coal Mining" in Minerals, MDPI AG (2021). https://doi.org/10.3390/min11060564
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Upotreba lidar tehnologije i digitalne fotogrametrije primenom iPhone pametnih telefona na primeru rudnika "Rudnik"
Nikola Mirković, Luka Crnogorac, Aleksa Paunović. "Upotreba lidar tehnologije i digitalne fotogrametrije primenom iPhone pametnih telefona na primeru rudnika "Rudnik"" in 15. Simpozijum „Rudarstvo 2024“ Održivi razvoj u rudarstvu i energetici, Vrnjačka banja, 21-24. maj 2024., Beograd : Institut za tehnologiju nuklearnih i drugih mineralnih sirovina (2024)
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An oilfield in Libya: A new model to enhance waste water disposal
Dušan Danilović, Vesna Karović Maričić, Nori Elhaddad, Branko Leković. "An oilfield in Libya: A new model to enhance waste water disposal" in Energy & Environment (2016)
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Heavy metals in lignite and soil of Kostolac-Kovin coal basin, eastern Serbia - comparative analysis with selected cities in Serbia, region, Europe and world
Bogoljub Vučković, Bojan Dimitrijević (2023)The Kostolac-Kovin coal basin with an area of 320 km2, with 5 separate layers of coal and with a total of about 5.7 Bt of geological resources and reserves represents an exceptional potential for coal production in Serbia. The coal resources listed in this way are not fully exploitable, but they represent potential for consideration. In this paper, we deal with the geochemical characteristics of coal seams and perform a comparative analysis of coal affectation on the environment. With ...... na jalovištu flotacije Rudnik d.o.o. "Rudnik", “XXVI Savetovanje o biotehnologiji”, 2021, str 201-207 DOI: 10.46793/SBT26.501B 6. Chen X., Lu X., Yang G., 2012 - Sources identification of heavy metals in urban topsoil from inside the Xi'an Second Ring road, NW China using multivariate statistical ...Bogoljub Vučković, Bojan Dimitrijević. "Heavy metals in lignite and soil of Kostolac-Kovin coal basin, eastern Serbia - comparative analysis with selected cities in Serbia, region, Europe and world" in 9th International Conference Mining and Environmental Protection, 24–27. May 2023, Sokobanja, Beograd : Univerzitet u Beogradu, Rudarsko-geološki fakultet (2023)
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Hydrothermal Synthesized and Alkaline Activated Carbons Prepared from Glucose and Fructose—Detailed Characterization and Testing in Heavy Metals and Methylene Blue Removal
Sanja Krstić, Milan Kragović, Maja Pagnacco, Vladimir Dodevski, Branka Kaluđerović, Miloš Momčilović, Ivica Ristović, Marija Stojmenović (2018)glukoza, fruktoza, аktivni ugalj, hidrotermalni tretman, aktivacija hidroksida, teški metali, metilen plavo... with Improved Conductivity and Robust Flexibility. ACS Appl. Mater. Interfaces 2016, 8, 14150–141559. [CrossRef] [PubMed] 31. Liu, H.; Huang, W.; Yang, X.; Dai, K.; Zheng, G.; Liu, C.; Shen, C.; Yan, X.; Guob, J.; Guo, Z. Organic vapor sensing behaviors of conductive thermoplastic polyurethane-graphene ...
... microporosity of activated carbons on the lignocellulosic composition of the precursors. Energies 2017, 10, 542. [CrossRef] 60. Deng, H.; Li, G.; Yang, H.; Tang, J.; Tang, J. Preparation of activated carbons from cotton stalk by microwave assisted KOH and K2CO3 activation. Chem. Eng. J. 2010, 163 ...
... Use of cellulose-based wastes for adsorption of dyes from aqueous solutions. J. Hazard. Mater. 2002, 92, 263–274. [CrossRef] 70. Gong, R.; Li, M.; Yang, C.; Sun, Y.; Chen, J. Removal of cationic dyes from aqueous solution by adsorption on peanut hull. J. Hazard. Mater. 2005, 121, 247–250. [CrossRef] ...Sanja Krstić, Milan Kragović, Maja Pagnacco, Vladimir Dodevski, Branka Kaluđerović, Miloš Momčilović, Ivica Ristović, Marija Stojmenović . "Hydrothermal Synthesized and Alkaline Activated Carbons Prepared from Glucose and Fructose—Detailed Characterization and Testing in Heavy Metals and Methylene Blue Removal" in Minerals, MDPI (2018)
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Rock slope stability analysis under Hoek–Brown failure criterion with different flow rules
The stability analysis of homogeneous rock slope following the Hoek–Brown failure criterion under the hypothesis of different flow rules is performed based on limit equilibrium and finite element methods. The applied failure criterion is the generalized Hoek–Brown that can be introduced as a shear/normal function in analysis applying different flow rules. The results are compared with those obtained by the application of equivalent shear strength parameters of the Mohr–Coulomb criterion, considering that this is still the most widely used ...Kružna klizna površ, Huk-Braunov kriterijum loma, Kriterijum popuštanja, Smičuća/normalna funkcija, Nivo napona, Verovatnoća i parametarska analizaSvetlana Melentijević, Zoran Berisavljević, Dušan Berisavljević, Claudio Olalla Marañón . "Rock slope stability analysis under Hoek–Brown failure criterion with different flow rules" in Bulletin of Engineering Geology and the Environment , Springer (2024). https://doi.org/10.1007/s10064-024-03667-0
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Hydrochemical features and their controlling factors in the Kucaj-Beljanica Massif, Serbia
Earth-Surface Processes, Geology, Pollution, Soil Science, Water Science and Technology, Environmental Chemistry, Global and Planetary ChangeFen Huang, Ljiljana Vasic, Xia Wu, Jianhua Cao, Saša Milanovic. "Hydrochemical features and their controlling factors in the Kucaj-Beljanica Massif, Serbia" in Environmental Earth Sciences, Springer Science and Business Media LLC (2019). https://doi.org/10.1007/s12665-019-8452-4
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A Knowledge-Based Approach to Mine Ventilation Planning in Yugoslav Mining Practice
Ventilation system analysis is a complex process based on the calculation and analysis of numerous parameters. These problems can be successfully solved by the SimVent numerical package, but a full understanding and use of the obtained results require the involvement of an experienced specialist in the ventilation field. The solution was found in the creation of a hybrid system INVENTS, whose knowledge base represents a formalization of the expert knowledge in the mine ventilation field. In this paper, we ...... Artificial Intelligence (McGraw-Hill, New York, 1983). 12. Z. Y. Yang, I. S. Lowndes and B. Denby, Genetic algorithm optimization of large UK coal mine ventilation network, Proc. 8th US Mine Ventilation Symp., 1998, 625-632. 13. Z. Y. Yang, I. S. Lowndes and B. Denby, Application of genetic algorithms ...Nikola Lilić, Ivan Obradović, Ranka Stanković. "A Knowledge-Based Approach to Mine Ventilation Planning in Yugoslav Mining Practice" in Mineral Resources Engineering 11 no. 4, Imperial College Press (2002): 361-382. https://doi.org/10.1142/S0950609802001014
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Hyperpycnites within the Devonian-Carboniferous flysch of the Carpatho-Balkanides (Kostadinovica, eastern Serbia)
Miloš Radonjić (2020)This study presents new discoveries of vascular plants and the trace fossil Dictyodora liebeana (GEINITZ) from the Devonian–Carboniferous Kučaj-Zvonce flysch of the Carpatho-Balkanides and the implications of this fossil association for its sedimentary setting. The occurrence of the described plant debris in a deep-marine environment indicates the presence of hyperpycnites within the siliciclastic turbidites exposed at the Kostadinovica locality. The sedimentological data and the characteristics of the fossil material support the proposed model in which the sediment was at ...Mississippian flora, Dictyodora liebeana (GEINITZ), hyperpycnites, Kučaj-Zvonce flysch, Carpatho-Balkanides... the sedimentary sequence consisting of couplets of inverse and normally graded layers with intersequence erosional surfaces (MULDER et al., 2003; YANG et al., 2017). Given that the Kostadinovica section is composed of fine-grained rocks which could be considered to belong to the distal part of the ...
... Variscan (Carboniferous to Permian) environments in the Circum Pan- nonian Region.– Geologica Carpathica, 60/1, 71–104. doi: 10.2478/v10096-009- 0002-7 YANG, R.C., JIN, Z.J., VAN LOON, A.J.T., HAN, Z.Z. & FAN, A.P. (2017): Climatic and tectonic controls of lacustrine hyperpycnite origination in the Late ...Miloš Radonjić. "Hyperpycnites within the Devonian-Carboniferous flysch of the Carpatho-Balkanides (Kostadinovica, eastern Serbia)" in Geologia Croatica, Croatian Geological Survey (2020). https://doi.org/10.4154/gc.2020.13
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Advancing Sentiment Analysis in Serbian Literature: A Zero and Few-Shot Learning Approach Using the Mistral Model
Ova studija predstavlja analizu sentimenta srpskih starih romana iz perioda 1840-1920, koristeći veliki jezički model (LLM) Mistral za tehniku učenja sa zasnovani na takozvanim "zero" i "few-shot" pokušajima. Glavni pristup uvodi inovacije osmišljavanjem istraživačkih upita (promptova) uključuju tekst sa uputstvom za klasifikaciju bez primera i na osnovu nekoliko primera, omogućavajući jezičkom modelu da klasifikuje osećanja u pozitivne, negativne ili objektivne kategorije. Ova metodologija ima za cilj da pojednostavi analizu osećanja ograničavanjem odgovora, čime se povećava preciznost ...Milica Ikonić Nešić, Saša Petalinkar, Mihailo Škorić, Ranka Stanković, Biljana Rujević. "Advancing Sentiment Analysis in Serbian Literature: A Zero and Few-Shot Learning Approach Using the Mistral Model" in Proceedings of the 2024 Joint International Conference on Computational Linguistics, Language Resources and Evaluation, Sofia, Bulgaria, 9-10 September 2024, LREC | COLING (2024)
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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 ...... K. Gimpel, P. Sharma, and R. Soricut, “ALBERT: A Lite BERT for Self-supervised Learning of Language Representations,” Feb. 2020 [3] Z. Zhang, J. Yang, and H. Zhao, “Retrospective Reader for Machine Reading Comprehension,” Jan. 2020 [4] B. Li, N. Jiang, J. Sham, H. Shi, and H. Fazal, “Real-world ...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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The influence of alkyl polyglucosides (and highly ethoxylated alcohol boosters) on the phase behavior of a water/toluene/technical alkyl polyethoxylate microemulsion system
Marija Ilic, Franz-Hubert Haegel, Vesna Pavelkic, Dragan Zlatanovic, Snezana Nikolic-Mandic, Aleksandar Lolic, Zoran Nedic (2016)The influence of additives (alkyl polyglucoside, Glucopon 600 CS UP and alcohol ethoxylate C18E100) on the behavior of the water/toluene/Lutensol ON 50 (technical oxoalcohol, i-C10E5) microemulsion system as a function of temperature and composition has been investigated. The phase behavior of the microemulsions was determined by vertical sections through the Gibbs phase prism (fish-like phase diagrams). Alkyl polyglucoside shifts the one phase region to lower temperatures compared with water/toluene/Lutensol ON 50 mixtures. This is contrary to the expectation, considering ...микроемулзија, толуен, алкил полиглукозид, оксоалкохол етоксилат, појачивач ефикасности, „fish“ дијаграми... Colloids Surfaces, A 176 (2001) 69-83 K. Fukuda, U. Olsson, M. Ueno, Colloids Surfaces, B 20 (2001) 129-135 J.L. Chai, Y.T. Wu , X.Q. Li, B. Yang, L.S. Chen, S.C. Shang, J.J. Lu, J. Chem. Eng. Data 56 (2011) 48-52 T. Sottmann, Curr. Opin. Colloid Interface Sci. 7 (2002) 57-65 D. Byelov ...Marija Ilic, Franz-Hubert Haegel, Vesna Pavelkic, Dragan Zlatanovic, Snezana Nikolic-Mandic, Aleksandar Lolic, Zoran Nedic. "The influence of alkyl polyglucosides (and highly ethoxylated alcohol boosters) on the phase behavior of a water/toluene/technical alkyl polyethoxylate microemulsion system" in Chemical Industry and Chemical Engineering Quarterly, National Library of Serbia (2016). https://doi.org/ 10.2298/CICEQ141105015I
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Petrofizička svojstva krečnjaka postamenta spomenika „Pobednik” na Beogradskoj tvrđavi
Dijana Trajković (2024)Spomenik „Pobednik” je podignut 1928. godine na Gornjem gradu Beogradske tvrđave. Spomenik je predstavljen bronzanom muškom figurom sa orlom u desnoj ruci i spuštenim mačem u levoj ruci i delo je vajara Ivana Meštrovića, dok je postament delo arhitekte Petra Bajalovića. Postament je u vidu dorskog stuba sa kanelurama na visokoj kubičnoj bazi i izgrađen je od krečnjaka o čijem poreklu ne postoje zvanični literaturni podaci, ali u korelaciji sa ostalim objektima Beogradske tvrđave, pretpostavlja se da je za ...... HCTOBCTHa CJIČKTDpOHCKOJ Bep3HjH KOJy CaM rpennao/na paju ojuraraĐa y JiuraTajiHoM pemo3HToOpHjyMy PynapcKOo-rcoOJIOIHIKOr dakyarera. /7l03BOJbaBaM JIa cc 06jaBe MOjI/I JIHuHH IIOJ1a11H BC3aHH 3a }1061/1jaH>e aKaJIČMCKOT 3BaMba, KaoO IITO Cy HMC H Hipe3HMe, roJuHa H MecTO pobema H JlaTyM oJIOpaHe pajna ...
... onuuje): @penyI«)BaHo juocTyraH Kpo3 HacJIOB 3aBPIIIHOr pajia H pec3HMcC Ppajia Ca KJbyuHHM pcunHMa; II. jaBHo ocTynaH y OTBOpCHOM IIpHcTy1IIy, TaKO JIA ra MOTy KOpHCTHTH CBH KOJH IIOIITy]y ojpenoe cajpxkaHe y oxlaOpaHoM THry JmieHie KpcaraBHe 3ajeJHHie (Creative Commons) 3a Kojy caM Cc y3 Car)1aACHOCT ...Dijana Trajković. Petrofizička svojstva krečnjaka postamenta spomenika „Pobednik” na Beogradskoj tvrđavi, 2024
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Површинско распадање керсантита из Тешића мајдана у корелацији са начином обраде на примеру малог степеништа (Београдска тврђава)
Невенка Новаковић (2024)Архитектуру Београда на прелазу 19. у 20. век обележила је употреба керсантита из каменолома Тешића мајдана. Kao камен високих декоративних својстава, керсантит је коришћен за јавне споменике, делове или потпуну изградњу објеката (Народна скупштина Србије, Мало степениште, Народни музеј и др.). Како очување споменика културе изискује познавање својстава уграђеног камена, истраживања су обухватила детаљно проучавање петролошких, хемијских и физичких карактеристика керсантита из Тешића мајданa и узорака камена из споменика Мало степениште (студија случаја). Након детаљног мапирања стања керсантита, лабораторијских ...керсантит, Мало степениште, споменик културе, архитектонски камен, физичко-хемијско распадање, мапирање, форме распадања, површинска обрадаНевенка Новаковић. Површинско распадање керсантита из Тешића мајдана у корелацији са начином обраде на примеру малог степеништа (Београдска тврђава), Београд : [Н. Новаковић], 2024
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Отварање и припрема лежишта за примену коморно-стубних метода откопавања
Никола Станишић (2024)Циљ мастер рада је да кроз теоријски преглед и практични пример, прикаже процес отварања и припреме лежишта за примену коморно-стубне методе окопавања. Предмет рада је мало лежиште олово-цинкане руде, а од варијација коморно-стубних метода откопавања, изабрана је коморно-стубна метода етажног откопавања са откопавањем одoздо на доле. Рад се бави темама одабира и описа начина отварања и припреме лежишта, методама откопавања, технологијом израде просторија и откопавања лежишта, организацијом рада и проценом трошкова и економичности експлоатације.... 9 BHJIH ce JIa HHJE JIOIHO JIO IpeKOpauekba rpaHHLIe JOM4. 'VikyrnHa ToTaJiHa MaKCHMaJIHa IIOMepaMba y JIpyroM c-ryuajy a3Hoce 0.36 mm. Đakropu craOujHocTH cy H3HaJI rpaHHIIe JIOM4a, TJ. HCITyPbcH Je yCJIOB Fs>1.4 , na ce Ha OCHOBy nonaTaKa JIOOHJeHHX aHaJIH3OM MO)JKE 34KJbyuHTH JIA Cy OTKOIHNIH ...
... Qi- – konuuHa OJ—MHHHpaHor MaTepujajma. 118 Ta6ena 9.5 – Ipopauynamu napaempu ymogapa u mpaucnopma wamepujana Ha omkonagarby Jeorcuuma Ma re pu ja jn a Tp au Hc no pr a C H a r a Mo To pa TI or po ur t» 24 ry Ma I I o r p o m i m a yj ba o r o H u M a r e p u j a ...
... yCBOJeH je MH3 JmTepaType Tipojekmosatbe u npopauyH no0epaOa xopusoHmanux npocmopuja, ayTopa II. JoBaHopBHha.!? /lyxxuHa cunpa Mopa OHTH JIOBOJbHa JIa CaBJIaJla OCJI4OJbeHy 3OHy H JA CHJIDO JeJ(HHM JleJ1OM Oy/1e yTHCHyTO y HeOCJI4aOJBeHy 3OHy H3HaJI CBOJIa IIDHpo7]iHe paBHOTe)Ke. IIIeMa 3a rpopauyH ...Никола Станишић . Отварање и припрема лежишта за примену коморно-стубних метода откопавања, 2024
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Mechanosynthesis and structural characterization of nanocrystalline Ce1–Y O2– (x=0.1–0.35) solid solutions
Martin Fabián, Bratislav Antić, Vladimír Girman, Milica Vučinić-Vasić, Aleksandar Kremenović, Shigeru Suzuki, Horst Hahn, Vladimír Šepelák (2015)A series of nanostructuredfluorite-type Ce1–xYxO2–δ (0rxr0.35) solid solutions, prepared via highenergy milling of the CeO2/Y2O3mixtures, are investigated by XRD, HR-TEM, EDS and Raman spectroscopy. For thefirst time, complementary information on both the long-range and short-range structural features of mechanosynthesized Ce1–xYxO2–δ, obtained by Rietveld analysis of XRD data and Raman spectroscopy, is provided. The lattice parameters of the as-prepared solid solutions decrease with increasing yttrium content. Rietveld refinements of the XRD data reveal increase in microstrains in the host ceria ...Martin Fabián, Bratislav Antić, Vladimír Girman, Milica Vučinić-Vasić, Aleksandar Kremenović, Shigeru Suzuki, Horst Hahn, Vladimír Šepelák. "Mechanosynthesis and structural characterization of nanocrystalline Ce1–Y O2– (x=0.1–0.35) solid solutions" in Journal of Solid State Chemistry, Elsevier BV (2015). https://doi.org/10.1016/j.jssc.2015.06.027
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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 ...... of fuzzy sets to safety and reliability engineering, International Journal of Approximate Reasoning, Vol. 100, Pages 29-55, 2018. [8] Wang, J., Yang, J.B., Sen, P. Safety analyses and synthesis using fuzzy sets and evidential reasoning. Reliability Engineering and System Safety, 47(2), 103-118 ...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)