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367 items

  • Application of stochastic models for mine planning and coal quality control

    Dejan Stevanović, Božo Kolonja, Ranka Stanković, Dinko Knežević, Mirjana Banković (2014)
    ... 7). Ad- justed on share of 95 percentiles content of sul- fur is over 1%, althought content in most of parts of the deposit is under 0.4%. The space distribution of sulfur required the homogeniza- tion of coal according to sulfur as a leading pa- rameter. Slave parameter for homogenization is ...
    ... formed by a set of blocks from different mine faces from multiple benches. The scenarios generated by sequential Gaussian simulation would provide a group of possible values to the blocks that form a homogenization pile. Consequently, the average organic sulfur content calculated for each pile can assume ...

  • Spatial assessment of the areas sensitive to degradation in the rural area of the municipality Čukarica

    Natalija Momirović, Ratko Kadović, Veljko Perović, Miloš Marjanović, Aleksandar Baumgertel (2019)
    Nature and Landscape Conservation, Soil Science, Agronomy and Crop Science, Water Science and Technology

  • Bridging Computational Lexicography and Corpus Linguistics: A Query Extension for OntoLex-FrAC

    Christian Chiarcos, Ranka Stanković, Maxim Ionov, Gilles Sérasset (2024)
    OntoLex, dominantni standard zajednice za mašinski čitljive leksičke resurse u kontekstu RDF-a, Linked Data i tehnologija Semantičkog veba, trenutno se proširuje sa posebnim modulom za Frekvencije, Primere i Informacije zasnovane na Korpusu (OntoLex-FrAC). Predlažemo novi komponent za OntoLex-FrAC, koji se bavi inkorporacijom korpusnih upita za (a) povezivanje rečnika sa korpusnim mašinama, (b) omogućavanje RDF baziranih web servisa da dinamički razmenjuju korpusne upite i podatke odgovora, i (c) korišćenje konvencionalnih upitačkih jezika za formalizaciju unutrašnje strukture kolokacija, skica reči i ...
    standardizacija, digitalna leksikografija, OntoLex, upiti korpusa, povezani podaci, Lingvistički povezani otvoreni podaci

  • A Knowledge-Based Approach to Mine Ventilation Planning in Yugoslav Mining Practice

    Nikola Lilić, Ivan Obradović, Ranka Stanković (2002)
    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 ...
    ... improvement of certain characteristics as well as the overall mine ventilation state. By simply activating the command buttons in the recommendations group, M in . R es . E n g . 2 0 0 2 .1 1 :3 6 1 -3 8 2 . D o w n lo ad ed f ro m w w w .w o rl d sc ie n ti fi c. co m b y U N ...

  • 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
    ... several of the most prominent Fss fault planes is oriented in a NW – SE direction (~ 310-130°) with a steep dipping angle (~80° to vertical). A second group of ob- served faults has a more localized influence on the succession. These faults (Fn in Fig. 2) have normal movements and are related to the Fss ...

  • Hydrographic and hydrological characterization of the Vodenička and Rosomačka rivers

    Vesna Ristić Vakanjac, Marina Čokorilo Ilić, Dušan Polomčić, Dragoljub Bajić, Jelena Ratković (2017)
    The Visočica River rises in Bulgaria, on the Berovo Mountain. Its course in Bulgaria is 16.7 km long. It enters Serbia near the village of Donji Krivodol. Up to the village of Pakleštica, or the beginning of Lake Zavoj, its right-bank tributaries are the Krivodolštica, the Vodenička, the Rosomačka and the Dojkinačka. There are no left-bank tributaries. Among the tributaries, water levels and discharges are gauged only on the Dojkinačka River. The Vodenička had also been gauged but only ...
    hydrographic characteristics, river discharge, the Vodenička River, the Kamenička River
    ... Bara. This streamlet also rises below Begova Kula. The right constituent stream, the Caričin Creek, is 2.057 km long. This stream is formed by a group of springs at elevations 1440 and 1430 m.a.s.l., located southwest of the Tupanac summit. On its way to the union with the Zanoška, it receives only ...

  • Српски језик у дигиталном добу -- The Serbian Language in the Digital Age

    Duško Vitas, Ljubomir Popović, Cvetana Krstev, Ivan Obradović, Gordana Pavlović-Lažetić, Mladen Stanojević (2012)
    Serbian language
    ... information space, there is in- creasing interaction between different languages, speak- ers and content thanks to new types of media. e cur- rent popularity of social media (Wikipedia, Facebook, Twitter, Google+) is only the tip of the iceberg. The global economy and information space confronts us ...
    ... many applications widely used in today’s information society rely heavily on language technology, particularly in Europe’s eco- nomic and information space. Although this technol- ogy hasmade considerable progress in the last few years, there is still huge potential to improve the quality of lan- guage ...
    ... advances functionalities of net- worked information technology. e network supports a Europe that unites as a sin- gle digital market and information space. It stimulates and promotes multilingual technologies for all Euro- pean languages. ese technologies support automatic translation, content production ...

  • An arid phase in the Internal Dinarides during the early to middle Miocene: Inferences from Mg-clays in the Pranjani Basin (Serbia)

    N. Andrić-Tomašević, V. Simić, O. Mandic, D. Životić, M. Suárez, E. García-Romero (2020)
    Paleontology,Earth-Surface Processes,Ecology, Evolution, Behavior and Systematics,Oceanography

  • Analogue modelling of strain partitioning along a curved strike-slip fault system during backarc-convex orocline formation: Implications for the Cerna-Timok fault system of the Carpatho-Balkanides

    Nemanja Krstekanić, Ernst Willingshofer, Taco Broerse, Liviu Matenco, Marinko Toljić, Uroš Stojadinović (2021)
    analogno modelovanje, raspodela deformacija, geometrija indentera, Černa i Timok rasedni sistem
    ... of the rigid block is 9 cm (Fig. 2c). The experiments presented in this study are subdivided in two groups. Group 1 (models 1–6) consists of experiments with rounded indenters whereas group 2 experiments (models 7–12) are characterized by rectangular indenters (Table 1). These distinct indenter geometries ...
    ... Supplementary Appendix C). 4.2. Parametrical study In the following sections we provide a concise overview of modelling results for the parameter space explored in this study. We start with highlighting similarities and differences of modelling results for different indenter geometries (Figs. 3–5) ...

  • Отпад из процеса сагоревања угља као сировина за добијање елемената ретких земаља

    Бојан Земљак (2024)
    Због великог броја индустрија у којима се користе ови ресурси, глобална економија се у великој мери ослања на елементе ретких земаља. Елементи ретких земаља су есенцијална сировина — материјал за развој савремених технологија, али у односу на њихову огромну потражњу, њихово вађење је ограничено и повезано је са значајним утицајима на животну средину. Због њихове ограничене доступности, проблема који се јављају при процесима експлоатације, све више и више земаља почиње да тражи повољније могућности вађења елемената [REE] из секундарних ...
    Елементи ретких земаља, резерве, употреба, представници и методе опоравка елемената ретких земаља
    ... 8). Springer Science & Business Media. [32] Reznichenko, A.L. and Hultzsch, K.C., 2013. Early transition metal (group 3-—5, lanthanides and actinides) and main group metal (group 1, 2, and 13) catalyzed hydroamination. Hydrofunctionalization, p.51-114. [33] Bunzli, J.C.G., 2000. Lanthanides ...

  • 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 ...
    rudarstvo, odlučivanje, upravljanje, model,multivarijabilno, multiatributno, multikriterijumsko
    ... Operational Research, 2010, 200: 198-215. 11. Behzadian, M., Seyyed, M.H.M., Joshua, I., Mark G., Mohammad, M. S., PROMETHEE Group Decision Support System and the House of Quality, Group Decision and Negotiation, Online ISSN 1572-9907, Publisher Springer Netherlands, 2011. 12. Belegendu A. D., Chandrupatla ...
    ... UNDERGROUND MINING METHOD SELECTION BY DECISION MAKING TOOLS / IZBOR METODE PODZEMNE EKSPLOATACIJE POMOĆU ALATA ZA ODLUĆIVANJE, Tunneling and Underground Space Technology, Elsevier, Vol. 24, No. 2, March 2009, 173–184. Pri projektovanju rudnika jedna od najodgovornijih odluka je izbor metode podzemne e ...
    ... Scientific Research, 29, 2011, 83-91. 4. Alpay S., Yavuz M., Underground mining method selection by decision making tools Tunneling and Underground Space Technology, Elsevier, Volume 24, Issue 2, March 2009, 173–184. 5. Anand, G., Kodali, R., Selection of lean manufacturing systems using the PROMETHEE ...

  • 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 ...
    rudarstvo, odlučivanje, upravljanje, model,multivarijabilno, multiatributno, multikriterijumsko
    ... Operational Research, 2010, 200: 198-215. 11. Behzadian, M., Seyyed, M.H.M., Joshua, I., Mark G., Mohammad, M. S., PROMETHEE Group Decision Support System and the House of Quality, Group Decision and Negotiation, Online ISSN 1572-9907, Publisher Springer Netherlands, 2011. 12. Belegendu A. D., Chandrupatla ...
    ... UNDERGROUND MINING METHOD SELECTION BY DECISION MAKING TOOLS / IZBOR METODE PODZEMNE EKSPLOATACIJE POMOĆU ALATA ZA ODLUĆIVANJE, Tunneling and Underground Space Technology, Elsevier, Vol. 24, No. 2, March 2009, 173–184. Pri projektovanju rudnika jedna od najodgovornijih odluka je izbor metode podzemne e ...
    ... Scientific Research, 29, 2011, 83-91. 4. Alpay S., Yavuz M., Underground mining method selection by decision making tools Tunneling and Underground Space Technology, Elsevier, Volume 24, Issue 2, March 2009, 173–184. 5. Anand, G., Kodali, R., Selection of lean manufacturing systems using the PROMETHEE ...

  • Osnovi hidrogeologije

    Petar Dokmanović (2021)
    hidrogeologija, atmosferska voda, površinske vode, podzemne vode, vodni bilans, poroznost stena
    ... Plant Atmosphere Continuum, In: The Handbook of Groundwater Engineering (sec. edition), 29.1- 29.42, Editor: Delleur J , CRC Press Taylor and Francis group, Boca Raton-London-New York 8. Davis, N. S. & De Wiest, R. J. M. (1966): Hydrogeology, New York/ London/ Sydney. 9. Delleur J, (2007): Ellementary ...
    ... and transport processes, In: The Handbook of Groundwater Engineering (sec. edition), 3.1-3.42, Editor: Delleur J , CRC Press Taylor and Francis group, Boca Raton-London-New York 10. De Vries J.J (2000): The Global Cycle of water, In: Environmental Isotopes in the Hydrological Cycle, Editor: Mook ...
    ... Rudarsko geološki fakultet, Beograd 40. Krešić N. (2007): Hydrogeology and Groundwater Modelling, sec. edition, CRC Press Taylor and Francis Group, Boca Raton 41. Kresic N. (2008): Groundwater resources (Sustainability, Mansgement and Restoration), McGraw- Hill, New York 42. Larson, J. (1984): ...

  • State and perspective of individual household heating in Serbia: A survey-based study

    Boban Pavlović, Dejan Ivezić, Marija Živković (2021)
    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 ...
    Domaćinstva, Individualni sistemi grejanja, Korišćenje energije, Stavovi potrošača, Anketa, Srbija

  • A fuzzy-based decision support model for effectiveness evaluation - a case study of examination of bulldozers

    Miloš Tanasijević, Predrag Jovančić, Dejan Ivezić, Uglješa Bugarić, Radiša Đurić (2019)
    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 ...
    Efikasnost, Fazi zaključivanje, Prikupljanje podataka, Buldozer

  • Strategic Environmental Assessment in the Application of Preventive Protection for Wind Farm Noise—Case Study: Maestrale Ring Wind Farm

    Boško D. Josimović, Aleksandar Cvjetić, Božidar Manić (2021)
    Determining the spatial position of wind turbines is the initial and most important phase in the development of a wind farm project. In this sensitive phase, all potential problems that may arise in the later stages of project development should be prevented by means of spatial and urban planning instruments. This makes it possible to achieve maximum use of the potential of wind in a particular space and, thus, fulfil the technical and economic requirements of the project while ...
    Energija,energetski inženjering i elektroenergetska tehnologija,obnovljivi izvori energije, održivost i životna sredina,električni i elektronski inženjering,kontrola i optimizacija,inženjering
    ... while respecting the capac- ity of the space and involving the public in all phases of developing and adopting the SEA. In this context, SEA makes a significant contribution to the decision-making process with regard to the future development of a particular space [15] and it is an important instru- ...
    ... prevented by means of spatial and urban planning instruments. This makes it possible to achieve maximum use of the potential of wind in a particular space and, thus, fulfil the technical and economic requirements of the project while re- specting the goals of environmental protection in that same area ...
    ... Plan of the Maestrale Ring wind farm). Criteria Rank Description Magnitude of Impact Significant −3 Significantly burdens the capacity of the space (increase in noise levels at recep- tors over 4 dB compared to Limit values for the noise indicators (LVNI) Greater −2 Disturbs the environment ...

  • Efikasnost različitih tipova glina Srbije za adsorpciju metilen plavog

    Maja D. Milošević (2016-12-09)
    Adsorpciona efikasnost različitih uzoraka glina sa lokaliteta Srbije određenaje njihovim tretiranjem različitim koncentracijama rastvora metilen plavog (MP).Detaljna mineraloška karakterizacija ispitivanih glina i rezultati njihove interakcijesa rastvorima MP dobijeni su primenom optičkih, rendgenskih, hemijskih, DTA ispektroskopskih metoda.Na osnovu formiranja MP agregata u izmenljivim pozicijama i površiničestica gline, razlikuju se dva tipa glinovitih minerala: visoko naelektrisani(smektiti) i nisko naelektrisani (kaoliniti). Dimeri se stvaraju na naelektrisanimpovršinama, a granica njihovog razvoja omogućuje determinaciju mineralne vrste.Molekuli MP stoje pod uglom od 21.5o kada se ...
    minerali glina, metilen plavo, kristali metilen plavog, difuznarefleksija, adsorpcija, flokulacija, naelektrisanje slojeva
    ... Science, Elsevier Ltd. 1: 19 - 86 Brown G. (Eds). 1961. The x-ray identification and crystal structures of clay minerals, Miner. Soc. (Clay Miner. Group), London, pp. 544 https://scholar.google.com/citations?view_op=view_citation&hl=en&user=yoRdi8AAAAAJ&citation_for_view=yoRdi8AAAAAJ:9yKSN-GCB0IC ...
    ... Clay Science. The Clay Minerals Society, Chantilly, VA. Crowley J.K. and Vergo N. 1988. Near infrared reflectance spectra of mixture of kaolin-group minerals: use in clay minerals studies. Clays & Clay Miner. 36 (4): 310 - 316 https://en.wikipedia.org/wiki/International_Commission_on_Illumination ...
    ... of the Ussher Society 8: 357 - 362 Wilson M. T. 1907. On the chemistry and staining properties of certain derivatives of the methylene blue group when combined with eosin. The Rockefeller University Press 9 (6): 645 - 644 Yamaoka K., Sasai R. and Takata N. 2000. Electric linear dichroism. ...

  • Основи геологије

    Урош Стојадиновић (2024)
    геологија

  • Determining the Availability of Continuous Systems at Open Pits Applying Fuzzy Logic

    Miljan Gomilanović, Miloš Tanasijević, Saša Stepanović (2022)
    This work presents a model for determining the availability of continuous systems at open pits by applying fuzzy logic and fuzzy inference systems. The applied model was formed by the synthesis of independent partial indicators of availability. The model is based on an expert system for assessing the availability of continuous mining systems. The availability of the system, as a complex state parameter, is decomposed into the partial indicators, reliability, and convenience of maintenance, and the fuzzy compositions, used ...
    системи, континуални систем експоатације, површински коп, рударство, расположивост, фази логика, max–min композиција, min–max композиција

  • Photocatalytic Activity of the V2O5 Catalyst toward Selected Pharmaceuticals and Their Mixture: Influence of the Molecular Structure on the Efficiency of the Process

    Sanja J. Armaković, Aleksandra Jovanoski Kostić, Andrijana Bilić, Maria M. Savanović, Nataša Tomić, Aleksandar Kremenović, Maja Šćepanović, Mirjana Grujić-Brojčin, Jovana Ćirković, Stevan Armaković (2023)
    Due to the inability of conventional wastewater treatment procedures to remove organic pharmaceutical pollutants, active pharmaceutical components remain in wastewater and even reach tap water. In terms of pharmaceutical pollutants, the scientific community focuses on -blockers due to their extensive (over)usage and moderately high solubility. In this study, the photocatalytic activity of V2O5 was investigated through the degradation of nadolol (NAD), pindolol (PIN), metoprolol (MET), and their mixture under ultraviolet (UV) irradiation in water. For the preparation of V2O5, facile ...
    DFT analysis, metoprolol, nadolol, nanomaterial characterization, photocatalysis, pindolol, β-blocker
    ... process. 2. Results and Discussion 2.1. XRPD Only one crystalline phase Shcherbinaite, V»Os (PDF card no. 01-072-0433; orthorhom- bic Pmnm space group) could be identified in the sample, Figure 2. Refined unit cell parameter values (a = 11.506 (2), b = 4.3708 (6), c = 3.5627 (4) A,V = 179.17 (4) ...