Претрага
945 items
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Geostatički proračuni sanacije klizišta šipovima
U ovom radu su, polazeći od rezultata geotehničkih istraživanja, prikazani geostatički proračuni sanacije klizišta vertikalnim šipovima. Metodologija proračuna je složena, jer podrazumeva interakciju klizišta i stabilizirajućih šipova. Stoga se simultano analiziraju stabilnost klizišta i stabilnost šipova. Prilikom određivanja bočne otpornosti tla oko šipova koristi se metoda Brinč Hansena koja uzima u obzir trodimenzionalne uslove u tlu i može da se primeni u složenim geološkim uslovima koji su česti u Srbiji. Analize stabilnosti klizišta vrše se odgovarajućim metodama granične ravnoteže. ...sanacija klizišta, interakcija klizišta i šipa, bočna otpornost šipova, stabilnost klizišta i šipova... da se odredi prosečna čvrstoća smicanja duž klizne površine tla uay (Slika 4), а u slučaju reaktiviranja starih klizišta, na ovaj način se određuje rezidualna čvrstoća (Chandler, 1977). Slika 4. Površina klizanja Figure 4. Sliding surface 297 mogu da se provere vrednosti dobijene povratnom analizom ...
... trodimenzionalne uslove u kojima se šip nalazi i koja predstavlja razliku bočnih pritisaka, ispred 1 iza šipa, određuje зе 17 sledeće Jednačine: о,Ђ 4 К те К, (1) gde je: o — bočni pritisak па dubini z q = ov – vefftikalni napon na dubini 2 c — kohezija К K. - koeficijenti bočnog pritiska tla ...
... —|s e _J ___M00 __ ______„ljaž 2 РЖИ њ 10 — 5 7___ 40.2 / -_'_________-–·—···""—–"·_– — 1,93 ;zi:: zip 00 __ —18.14 r= 5 1 ___ | _____log? | ) 4»/"_/ К'„' = 0 2а ф = 0% 2 р & a 2 20 0 5 102/B 15 20 2/8 Slika 3. Koeficijent bočnog.pritiska а koji zavisi od kohezije (Brinč Hansen, 1961) ...Slobodan Ćorić, Dragoslav Rakić, Dušan Berisavljević. "Geostatički proračuni sanacije klizišta šipovima" in Zbornik radova osmog naučno-stručnog međunarodnog savetovanja - Geotehnički aspekti građevinarstva, Savez građevinskih inženjera Srbije, (2019)
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Палеомагнетски резултати из Тимочког магматског комплекса, Источна Србија
... Márton, E.2, Јовановић, Д.1, Луковић, А.3, Цветков, В.4 1) Републички геодестки завод, Одељење за геомагнетизам и аерономију, Београд, Србија, e‐mail: vlesić@drenik.net 2) Mining and Gelogical Survey of Hungary 3)Природњачки музеј, Београд, Србија 4) Универзитет у Београду, Рударско‐геолошки факултет ...
... зити сенона, 4:седименти и епикластити турон‐сенона, 5: андезити турон‐кампана, 6: седименти алб‐ценомана, 7: локалитети палео‐ магнетског узорковања магматита, 8: локалитети палеомагнетског узорковања седимената. Назвив локалитета: 1‐Лес‐ ково, 2‐Јасиково 3 , 3‐Јасиково 1, 4‐Јасиково 2, ...
... andesite, 4: Turonian‐Senonian sedi‐ ments and epiclastite, 5: Turonian‐Campanian andesite, 6: Albian‐Cenomanian sediments, 7: paleomagnetic sampling sites of magmatic rocks, 8: paleomagnetic sampling localities of sediments. Name of localities/sites: 1‐Leskovo, 2‐Jasikovo 3, 3‐Jasikovo 1, 4‐Jasikovo 2 ...Весна Лесић, Емо Мартон, Драган Лукић, Весна Цветков. "Палеомагнетски резултати из Тимочког магматског комплекса, Источна Србија" in Knjiga apstrakata 17. Kongres geologa Srbije, Vrnjačka Banja 17-20. maj 2018., Српско геолошко друштво (2018)
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Coal homogenization stockyard sizing “Tamnava – Zapad” case study
... stockyard is shown in Figure 4 and Table 1 on the example of the "Tamnava - Zapad" pit. The example shows stacking in two rows, in four and six piles when the stacking capacity equals the reclaiming capacity, because 2 reclaimers and one stacker are used. Figure 4. Number of piles for the purpose ...
... Comparing coal stockyard capacity utilization with 4 and 6 piles Number of packages 2 + 2 3 + 3 Total length 570 m Coal mass, total 400,000 t 375,000 t Coal mass per package 100,000 t 65,000 t Reserve 8 days 7.5 days Time per package 6 shifts 4 shifts Max. number of filled packages 2.5 4 ...
... science, Vol. 18., No. 4, 2014, pp.1361-1372, DOI: 10.2298/TSCI130201031S 9. Zhao, S., Lu, T.F., Koch, B. and Hurdsman, A., 2015. 3D stockpile modelling and quality calculation for continuous stockpile management. International Journal of Mineral Processing, 140, pp.32-4 http://dx.doi.org/10 ...Božo Kolonja, Dinko Knežević, Ranka Stanković, Dejan Stevanović, Detlef Trummer. "Coal homogenization stockyard sizing “Tamnava – Zapad” case study" in Proceedings of 13th International Symposium Continuous Surface Mining, ISCSM 2016, / (2016)
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Mine ventilation system planning using genetic algorithms
The most common problem in contemporary mining practice related to the planning and analysis of ventilation systems is the optimization of partially regulated air distribution in mine ventilation networks. This paper presents a two step optimization procedure for partly regulated air distribution in mine ventilation networks. The first step is the determination of air distribution in all branches using the well known Hardy-Cross method. In the second step the distribution and parameters of air flow regulators with minimum engaged ...coal, lignite, and peat; ventilation systems; coal mining; underground mining; ventilation; mathematical models; design; air flow; optimization; calculation methodsNikola Lilić, Ranka Stanković, Ivan Obradović. "Mine ventilation system planning using genetic algorithms" in 6. international symposium on mine planning and equipment selection, Ostrava (Czech Republic), 3-6 Sep 1997, A.A. Balkema, Rotterdam (Netherlands) (1997)
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The optimization of auxiliary machinery in open-cast lignite mines: a case study of bulldozers
One of the most important prerequisites for the successful operation of the open-cast lignite mine is to carry out all the auxiliary works timely with the necessary quality. The most important and most commonly used auxiliary machines are bulldozers. Engaging time of bulldozers use is in direct relation with the coefficients of the time and capacity utilization of the continuous system for the excavation of coal and tailings, which indicates their importance. More than 100 bulldozers have been hired ...... / —о— Аџегаве геа!7еа moto hours — — Ауегаве рјаппеа stoppages 1000 + —-—Average ипрјаппеа stoppages 500 4 + Tr ту — А А Ак.к Д 0 т т 7 т т т — 7 1.year 2. уеаг 3. уеаг 4. уеаг 5. уеаг 6. уеаг5 7. уеаг5 8. уеаг5 9. уеаг5 10. уеаг5 Figure 1. Тће акегаре number ој achieved того hours т ...
... T —time of machine application. Optimal replacement time is at the moment with minimal cost (Figure 3). [2] Equivalent Uniform Annual Cost (EUAC) 4 a Optimal Economic Life: Min EUAC , Total Cost i i Operations and Maintenance Cost Capital Cost vW Time of Use Figure 3. The economic life of the ...
... dozers at 70 C/mh and for уегу strong dozers at 100 е/тћ. Operating costs by years for CAT D8R and Dressta TD25M dozers in PE EPS are shown in Figure 4. Costs increasing trend is evident in this interpretation. In case of applying profit life criterion CAT D8R dozer should be replaced after 7 years ...Dragan Ignjatović, Predrag Jovančić, Stevan Đenadić, Ivan Janković, Ivica Ristović. "The optimization of auxiliary machinery in open-cast lignite mines: a case study of bulldozers" in 7th International Symposium Mining and Environmental Protection, University of Belgrade, Faculty of Mining and Geology, Belgrade, Serbia (2019)
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Application of Project Management Process on Environmental Management System Improvement in Mining-Energy Complexes
... Total Free Independent n (i–j) (tij) (TE)i (TL)i (TE)j (TL)j Pij Sij Nij 1 * 1–2 2 0 0 2 2 0 0 0 2 * 2–3 1 2 2 3 3 0 0 0 3 * 3–4 1 3 3 4 4 0 0 0 4 * 2–5 1 4 4 5 5 0 0 0 5 4–5 2 2 2 5 5 1 1 1 6 * 5–6 1 5 5 6 6 0 0 0 7 6–7 2 6 6 8 9 1 0 0 8 7–13 2 8 9 10 11 1 0 0 9 13–20 1 10 11 11 12 1 0 0 10 6–8 3 6 ...
... of mining and energy complex protection systems 1 3–4 4 Defining the impact of energy complex operations on environmental quality 1 2–5 5 Analyzing the possibility of applying the basic principles of sustainable development in the energy sector 2 4–5 6 Selecting the basic sustainable development principles ...
... opportunities for changing the means (n34), which is evident from Figure 4. Figure 4. Illustrative part of gantographic display of the project to improve the environmental protection system in mining and energy complexes. Figure 4. Illustrative part of gantographic display of the project to improve ...Jelena Malenović Nikolić, Dejan Vasović , Ivana Filipović , Stevan Mušicki, Ivica Ristović . "Application of Project Management Process on Environmental Management System Improvement in Mining-Energy Complexes" in Energies (2016). https://doi.org/https://doi.org/10.3390/en9121071
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Gate Road Support Deformation Forecasting Based on Multivariate Singular Spectrum Analysis and Fuzzy Time Series
Luka Crnogorac, Rade Tokalić, Zoran Gligorić, Aleksandar Milutinović, Suzana Lutovac, Aleksandar Ganić (2021)Underground mining engineers and planners in our country are faced with extremely difficult working conditions and a continuous shortage of money. Production disruptions are frequent and can sometimes last more than a week. During this time, gate road support is additionally exposed to rock stress and the result is its progressive deformation and the loss of functionality of gate roads. In such an environment, it is necessary to develop a low-cost methodology to maintain a gate road support system. ...deformacije podgrade, lasersko skeniranje, višekanalna singularna spektralna analiza, prognoza, klasterisanje fuzzy vremenskih serija... 0375 −0.0386 The rank of the matrix YV is d = 4. The contribution of the component YVI is measured by the share of the corresponding eigenvalues (Table 4). Energies 2021, 14, 3710 13 of 20 Table 4. Share of the eigenvalues. Eigenvalue ∑i∈IλVi /∑ 4 i=1λVi Share (%) λV1 = 1066.7105 1066.7105/1067 ...
... Table 1. X coordinates of the markers (m). Marker t = 0 t = 1 t = 2 t = 3 t = 4 t = 5 1 X(1) 0.000 0.011 0.025 0.039 0.055 0.068 2 X(2) 0.000 0.019 0.035 0.053 0.071 0.085 3 X(3) 0.000 0.022 0.047 0.079 0.104 0.135 4 X(4) 0.000 0.030 0.072 0.111 0.153 0.207 5 X(5) 0.058 0.095 0.132 0.192 0.230 0.281 ...
... Table 2. Z coordinates of the markers (m). Marker t = 0 t = 1 t = 2 t = 3 t = 4 t = 5 1 Z(1) 0.000 0.000 0.000 0.000 0.000 0.000 2 Z(2) 0.624 0.625 0.622 0.621 0.617 0.614 3 Z(3) 1.245 1.231 1.239 1.221 1.235 1.219 4 Z(4) 1.860 1.846 1.853 1.835 1.826 1.823 5 Z(5) 2.305 2.284 2.266 2.266 2.263 2.269 ...Luka Crnogorac, Rade Tokalić, Zoran Gligorić, Aleksandar Milutinović, Suzana Lutovac, Aleksandar Ganić. "Gate Road Support Deformation Forecasting Based on Multivariate Singular Spectrum Analysis and Fuzzy Time Series" in Energies, MDPI (2021). https://doi.org/https://doi.org/10.3390/en14123710
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Equilibrium and kinetic studies of the reactions between [Ru(terpy)(bipy)Cl]Cl complex and biologically important N-donor ligands
Studije u oblasti antikancerogenih karakteristika jedinjenja rutenijuma(III/II) izazivaju veliku pažnju već nekoliko godina otkako su neka od njih kao što su KP1019 (indazolijum-tetrahloridobis(H-indazol)rutenat(III)) i NAMI-A (imidazolijum) -trans-tetrahlorido(dimetilsulfoksid)indazolerutenat(III)) dostigao nivo kliničkog ispitivanja. Kompleksi rutenijuma u reakciji sa molekulom DNK formiraju prvenstveno gvanin- i adenin-adukt, kao komplekse platine. Takođe, nekoliko studija ukazuje na veoma jake interakcije sa proteinima. Međutim, kompleksi Ru(III/II) pokazuju generalno manje toksične efekte od lekova platine(II).1 Proučavali smo kinetiku reakcija supstitucije kompleksa [Ru(terpi)(bipi)Cl]Cl sa biološki važnim ligandima: dimetilsulfoksidom, gvanozin-5’-monofosfatom, ...Aleksandar Mijatović, Biljana Petrović, Ratomir Jelić, Živadin Bugarčić. "Equilibrium and kinetic studies of the reactions between [Ru(terpy)(bipy)Cl]Cl complex and biologically important N-donor ligands" in EuroAnalysis 16 - Challenges in Modern Analytical Chemistry, Belgrade : Division of Analytical Chemistry of the Serbian Chemical Society (2011)
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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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Lower Berriasian ammonites from Dedina (Golubac Mountains, eastern Serbia) and their biostratigraphic implication
... Arkadiev; Arkadiev and Bogdanova, p. 178, pl. 14, fig. 2a, b, text-fig. 64:7, figs. 3a, b, 4, text-fig. 63:4. 2016 Pseudosubplanites fasciculatus Bogdanova et Arkadiev; Hoedemaaeker et al., p. 118, pl. 1, figs. 4-9. Material. External crushed outer mould with the last and penulti- mate whorls (specimen ...
... 6a–c. 1973 Berriasella (Picteticeras) oxycostata (Jacob); Le Hegarat, p. 78, pl. 8, figs. 4-6; pl. 40, figs. 2–4. 1979 Berriasella (Picteticeras) oxycostata (Mazenot); Sapunov, p. 176, pl. 56, figs. 3, 4. 1982 Berriasella (Hegaratella) oxycostata (Mazenot); Nikolov, p. 70, p. 15, fig. 2. 1985 ...
... carachtheis (Zeuschner); Fozy and Scherzinger, p. 215, pl., fig. 3a, b, non pl. 4, fig. 4a, b; non pl. 5, figs. 1a, b, 2,10 (= H. carachtheis |Zejszner|). ?2020 Haploceras carachtheis leiosoma (Zittel); Sarti, p. 91, pl. 4, fig. 6a, b. Material. Small, partially deformed, and corroded outer mould ...Zdenek Vasícek , Dragoman Rabrenović, Petr Skupien, Barbara Radulović. "Lower Berriasian ammonites from Dedina (Golubac Mountains, eastern Serbia) and their biostratigraphic implication" in Cretaceous Research (2023). https://doi.org/10.1016/j.cretres.2023.105623
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Stratigraphy and microfossils (radiolarians and planktonic foraminifers) of the Upper Cretaceous (upper Santonian–lower Campanian) Struganik limestone (Western Serbia)
Liubov G. Bragina, Nikita Yu. Bragin, Ludmila F. Kopayevich, Nevenka Đerić, Nataša Gerzina Spajić (2019)Liubov G. Bragina, Nikita Yu. Bragin, Ludmila F. Kopayevich, Nevenka Đerić, Nataša Gerzina Spajić. "Stratigraphy and microfossils (radiolarians and planktonic foraminifers) of the Upper Cretaceous (upper Santonian–lower Campanian) Struganik limestone (Western Serbia)" in Palaeoworld, Elsevier BV (2019). https://doi.org/10.1016/j.palwor.2019.05.001
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An Italian-Serbian Sentence Aligned Parallel Literary Corpus
This article presents the construction and relevance of an Italian-Serbian sentence-aligned parallel corpus, delving into the aligned sentences in order to facilitate effective translation between the two languages. The parallel corpus serves as a valuable resource for language experts, researchers, and language enthusiasts, fostering a deeper understanding of linguistic nuances and cultural expressions. By bridging the gap between Serbian and Italian, this corpus opens new avenues for cross-cultural communication and collaboration, and ultimately contributes to the improvement of language-related ...Saša Moderc, Ranka Stanković, Aleksandra Tomašević, Mihailo Škorić. "An Italian-Serbian Sentence Aligned Parallel Literary Corpus" in Review of the National Center for Digitization, Belgrade : Faculty of Mathematics, University of Belgrade (2023). https://doi.org/10.5281/zenodo.11203388
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Методологија интегралне анализе сценарија енергетског развоја
Александар Маџаревић (2019)енергетска безбедност, сценарио развоја, фази логика, сигурност снабдевања, доступност, расположивост, природни гас... .3 + 2 x 0 .5 + 0 .8 + 0 .7 )/ 5 (0 .5 + 0 .4 + 2 x 0 .2 + 0 .3 )/ 5 (0 .1 + 0 .1 )/ 5 0 0 (0 .2 5 + 0 .5 + 0 .4 + 0 .2 )/ 5 (2 x 0 .5 + 0 .4 + 0 .3 + 0 .6 )/ 5 (0 .2 5 + 2 x 0 .2 + 0 .4 + 0 .3 )/ 5 0 n=5 0.08 0.56 0.32 0.04 0 0 0.27 ...
... 0(10)); C = (0(1), 0(2), 0(3), 0.5(4), 1(5), 1(6), 0.5(7),1(8), 0(9), 0(10)); (5.2) D = (0(1), 0(2), 1(3), 1(4), 0.33(5), 0(6),…, 0(10)); E = (1(1), 1(2), 0(3),…, 0(10)). АЛЕКСАНДАР МАЏАРЕВИЋ 71 ИНДИКАТОРСКА СТРУКТУРА И ПАРЦИЈАЛНИ ИНДИКАТОРИ 1 2 3 4 5 6 7 8 9 10 1.00 0.50 0.75 ...
... C = (0(1), 0(2), 0(3), 0(4), 1(5), 1(6), 0(7), 1(8), 0(9), 0(10)); (5.3) D = (0(1), 0(2), 1(3), 1(4), 0(5),…, 0(10)); E = (0(1), 1(2), 0(3),…, 0(10)). РУДАРСКО-ГЕОЛОШКИ ФАКУЛТЕТ 72 МЕТОДОЛОГИЈА ИНТЕГРАЛНЕ АНАЛИЗЕ СЦЕНАРИЈА ЕНЕРГЕТСКОГ РАЗВОЈА 1 2 3 4 5 6 7 8 9 10 1.00 0.50 ...Александар Маџаревић. Методологија интегралне анализе сценарија енергетског развоја, Рударско-геолошки факултет, 2019
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Efficiency and lifetime of medium voltage transformers
Snežana Aleksandrović, Vesna Damnjanović. "Efficiency and lifetime of medium voltage transformers" in XVI International Scientific – Professional Symposium, INFOTEH, Jahorina, 22. mart - 24. mart 2017., Istočno Sarajevo : Elektrotehnički fakultet, Univerzitet u Istočnom Sarajevu (2017)
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Hronološki pregled razvoja površinske eksploatacije lignita u Srbiji
U ovom preglednom radu dat je istorijski pregled razvoja površinske eksploatacije lignita na teritoriji Srbije, uz kratak osvrt na geološki nastanak i kvalitet i rezerve uglja, kao i mogućnosti korišćenja za dalju upotrebu. Kolubarski, Kostolački i Kovinski ugljeni baseni lignita u Srbiji, ne računajući Kosovsko-Metohijski i Drenički u sastavu AP Kosovo i Metohija po Rezoluciji 1244 UN, su ležišta najrasprostranjenijeg uglja - lignita u Srbiji koji se eksploatiše od druge polovine 20. veka na velikom broju površinskih kopova ...Bojan Dimitrijević, Radmila Gaćina, Bogoljub Vučković. "Hronološki pregled razvoja površinske eksploatacije lignita u Srbiji" in XI Međunarodna konferencija ugalj i kritični mineral CCM 2023, Zlatibor, 11-14. oktobar 2023., Beograd : Jugoslovenski komitet za površinsku eksploataciju (2023)
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Development of A Business Intelligence Tool For Accident Analysis in Mines
... nadkolenica 11 2 1 14 podkolenica 3 4 7 prsti noge 2 2 stopalo 2 4 6 ruka 11 26 18 55 nadlaktica 8 1 9 podlaktica 3 1 4 prsti na ruci 11 5 4 20 rame 1 3 4 šaka 9 9 18 trup 18 18 ostali delovi tela 11 11 unutrašnji organi 7 7 Total 64 44 40 148 6 4. CONCLUSION Both managers and ...
... 2012., Volume VII, pp., 1-5, ISSN 1801-1764 (printed version) [4] Dhillon, BS: Engineering Safety: Fundamentals, Techniques, and Applications. World Scientific Publishing Co. Pte. Ltd, Singapore, 2003., ISBN: 978-981-238-221-4 [5] Gagné, C., Lazure, L., Ledoux, É., Ouellet, S., & Fournier, P ...
... Mining and Geology, Belgrade, ranka.stankovic@rgf.bg.ac.rs 3 University of Belgrade, Faculty of Mining and Geology, Serbia, ivan.obradovic@rgf.bg.ac.rs 4 University of Belgrade, Faculty of Mining and Geology, Serbia, olivera.kitanovic@rgf.bg.ac.rs 5 University of Belgrade, Faculty of Mining and Geology ...Ljiljana Kolonja, Ranka Stanković, Ivan Obradović, Olivera Kitanović, Uroš Pantelić. "Development of A Business Intelligence Tool For Accident Analysis in Mines" in Proceedings of the 5th International Symposium Mining And Environmental Protection, June 10-13, 2015, Vrdnik, Serbia, Belgrade : Faculty of Mining and Geology (2015)
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Eksploatacioni učinci ugljenih sistema na površinskom kopu Tamnava–Zapadno polje
U radu su analizirani eksploatacioni učinci ugljenih sistema na površinskom kopu Tamnava–Zapadno polje. Period analize je prvih šest meseci tekuće godine. Analiza je vršena sa aspekta ostvarene proizvodnje, kvaliteta uglja, efektivnog vremena rada, kapacitetnog i vremenskog iskoršćenja i zastoja sistema. Za poređenje podataka različitih parametara koji po svojoj prirodi nisu međusobno uporedivi, u radu su korišćene metode višekriterijumskog odlučivanja.... v = 0,6 v = 0,7 Qj Rang Qj Rang Qj Rang I BTD 0,153015 1 0,183619 1 0,214222 1 II BTD 0,5 3 0,4 3 0,3 2 III BTD 1 4 1 4 1 4 IV BTD 0,246826 2 0,296191 2 0,345556 3 Na osnovu rezultata analize dolazi se do zaključka da je I BTD sistem ostvario najbolje eksploatacione ...
... Petrović[footnoteRef:3], Lazar Žujović[footnoteRef:4] [1: PD PRO TENT Površinski kop Tamnava–Zapadno polje] [2: Univerzitet u Beogradu – Rudarsko–geološki fakultet] [3: JP Elektroprivreda Srbije, Ogranak RB Kolubara, Površinski kop Tamnava–Zapadno polje] [4: Doktorand Rudarsko–geološkog fakulteta Un ...
... 1 , 00 i i ii S CC SS - -+ =££ + 0 +e VIKOR | —a - TOPSIS IBTD 1 II BTID 3 2 II BTD IVBID 4 2 4 3 IVBTD Ill BTD ILBTD IBTD 996.300 1.004.500 0 500.000 1.000.000 1 = Meduslojna jalovina (m3) 500.000 ...Marko Lazić, Filip Miletić, Milena Lekić, Veljko Rupar, Željko Petrović, Lazar Žujović . "Eksploatacioni učinci ugljenih sistema na površinskom kopu Tamnava–Zapadno polje" in 10th International Conference Coal 2021, Jugoslovenski komitet za površinsku eksploataciju, Zlatibor (2021)
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Rezultati ispitivanja parametara čvrstoće i dinamičkih svojstava mermera i mogućnost njihove korelacije
Ispitivanja stena kao radne sredine, odnosno materijala sa kojim se gradi, na kome se gradi i u kome se gradi, svojom složenošću zahteva njeno svestrano izučavanje po velikom broju parametara. Zadatak Mehanike stena je da što bolje upozna ponašanje stenske mase i njenu otpornost na dejstvo pritiska, zatezanja i smicanja, kao i dinamičkih svojstava. Poznavanje navedenih parametara i njihova korelacija omogućavaju pouzdaniji izbor parametara za projektovanje danas sve zahtevnijih uslova kako podzemne, tako i površinske eksploatacije. U ovom radu ...mermer, jednoosna čvrstoća na pritisak, čvrstoća na istezanje, brzina longitudinalnih elastičnih talasa, korelacijaJelena Majstorović-Necković, Vladimir Čebašek, Veljko Rupar. "Rezultati ispitivanja parametara čvrstoće i dinamičkih svojstava mermera i mogućnost njihove korelacije" in 11. Međunarodna konferencija “Ugalj i kritični materijali" CCM 2023, Zlatibor, 11-14. oktobar 2023., Beograd : Jugoslovenski komitet za površinsku eksploataciju (2023)
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On the distribution modulo 1 of the sum of powers of a Salem number
Dragan Stankov (2016)It is well known that the sequence of powers of a Salem number θ, modulo 1, is dense in the unit interval, but is not uniformly distributed. Generalizing a result of Dupain, we determine, explicitly, the repartition function of the sequence , where P is a polynomial with integer coefficients and θ is quartic. Also, we consider some examples to illustrate the method of determination.Algebraic integer, the house of algebraic integer, maximal modulus, reciprocal polynomial, primitive polynomial, Schinzel-Zassenhaus conjecture, Mahler measure, method of least squares, cyclotomic polynomialsDragan Stankov. "On the distribution modulo 1 of the sum of powers of a Salem number" in Comptes rendus Mathematique (2016). https://doi.org/10.1016/j.crma.2016.03.012
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Control of substructure construction of railways in the Republic of Serbia
Контрола збијености природног тла (у ископу) или збијеног у насипу при изградњи саобраћајница представља један од основних облика контроле квалитета доњег строја. Код изградње брзих саобраћајница (аутопутеви и брза железница) приоритет је постизање високог нивоа контроле извршених радова. У циљу онемогућавања диференцијалног слегања (при изградњи насипа), или промене запремине услед допунског збијања материјала, које неминовно доводе до деформација, потребно је извршити оптимално збијање материјала. У оквиру овог рада приказује се техничка регулатива која регулише контролу збијености при изградњи железничке ...... Professor - Associate Professor - DIGITAL PUBLICATION – DISTRIBUTION THROUGH CONFERENCE WEB SITE – ISBN 978-99976-978-4-4 ISSN 2566-4484 Banja Luka, june 2022 INTERNATIONAL CONFERENCE ON CONTEMPORARY THEORY AND PRACTICE IN CONSTRUCTION XV STEPGRAD ...
... material. The foundation soil planum must meet the geometric requirements [3:6-6]: flatness of the soil material layer 30 mm/4 m; flatness of the stone material layer 50 mm/4 m; the maximum allowed deviation of the elevation of the planum of the foundation soil from the projected elevation is ± 2.5 ...
... n of geosynthetics, chemical stabilization, etc.). Table 4.Proposed presentation of compaction test results 607 STEPGRAD2022 PROCEEDINGS OF INTERNATIONAL CONFERENCE ON CONTEMPORARY THEORY AND PRACTICE IN CONSTRUCTION XV 4. CONCLUSION The aim of the author of this paper is to present ...Dragan Lukić, Dragoslav Rakić, Irena Basarić Ikodinović. "Control of substructure construction of railways in the Republic of Serbia" in International Conference On Contemporary Theory and Practice in Construction XV, Banja Luka 16-17 jun 2022., University of Banja Luka Faculty of Architecture, Civil Engineering and Geodesy (2022)