Претрага
2357 items
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Анализа одрона у стенским косинама: савремени приступи
Милош Марјановић (2023)У Србији и региону познате су бројне појаве одрона које су изазвале велике застоје саобраћаја, материјалне штете или чак имале фаталне исходе, па их је потребно непрестано пратити и изучавати. Mодeловањe одрона скопчано је са ниским нивоом поузданости, али савремене технологије омогућавају да сe такви изгледи донекле побољшају. Једна од технологија која чини искорак утом правцу јe LiDAR-ско скенирање, које обезбеђује детаљне топографске подлоге у виду облака тачака високе резолуције и тачности. Поступак анализе одрона може се свести на: ...Милош Марјановић. "Анализа одрона у стенским косинама: савремени приступи" in Записници Српског геолошког друштва, Београд : Српско геолошко друштво (2023)
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Creation of a Training Dataset for Question-Answering Models in Serbian
Razvoj i primena veštačke inteligencije u jezičkim tehnologijama značajno su napredovali poslednjih godina, posebno u domenu zadatka odgovaranja na pitanja (Question Answering - QA). Dok su postojeći resursi za QA zadatke razvijeni za glavne svetske jezike, srpski jezik je relativno zanemaren u ovoj oblasti. Ovaj rad predstavlja inicijativu za kreiranje obimnog i raznovrsnog skupa podataka za obučavanje modela za odgovaranje na pitanja na srpskom jeziku, koji će doprineti unapređenju jezičkih tehnologija za srpski jezik. Pored brojnih istraživanja o jezičkim modelima ...veštačka inteligencija, obrada prirodnog jezika, jezički resursi, anotirani skupovi, ekstrakcija informacija, odgovaranje na pitanjaRanka Stanković, Jovana Rađenović, Maja Ristić, Dragan Stankov. "Creation of a Training Dataset for Question-Answering Models in Serbian" in South Slavic Languages in the Digital Environment JuDig Book of Abstracts, University of Belgrade - Faculty of Philology, Serbia, November 21-23, 2024, University of Belgrade - Faculty of Philology (2024)
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Analiza sistema odvodnjavanja površinskog kopa Drmno od podzemnih voda sa severnim savršenim ekranom
Izrada nesavršenog ekrana do drugog sloja uglja na površinskom kopu Drmno, pored zadržavanja postojećih standardnih metoda odvodnjavanja od podzemnih voda linijama bunara, predviđena je poslednje decenije u celokupnoj rudarskoj projektnoj dokumentaciji. Iz objektivnih i subjektivnih razloga njegova realizacija nije ostvarena do danas. U međuvremenu je, uz dodatna geološka istraživanja i promenu dinamike i parametara sistema površinske eksploatacije, došlo do određenih značajnih prostornih promena geoloških i rudarskih uslova u eksploatacionom polju. Ovo je omogućilo preliminarno inoviranje pristupa procesu i konceptu ...Tomislav Šubaranović, Dušan Polomčić, Vladimir Pavlović. "Analiza sistema odvodnjavanja površinskog kopa Drmno od podzemnih voda sa severnim savršenim ekranom" in Zbornik apstrakata sa 9. Međunarodne konferencije Ugalj, Zlatibor, 2019., Jugoslovenski komitet za površinsku eksploataciju (2019)
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Legal framework for recultivation of degraded areas caused by mining exploitation
Radmila Gaćina (2023)Prilikom površinske i podzemne eksploatacije uglja eksploatacioni sistemi oštećuju veće ili manje površine zemljišta. Iskustva pokazuju da su oštećenja zemljišta znatno veća kod površinske eksploatacije, gde je prostora degradiran ne samo u konturi rudnika i okoline, već se promene takođe dešavaju u prirodnom okruženju. U članku su predstavljeni rezultati studije zakonskih okvira rekultivacije u nekim zemljama sveta i u Srbiji. Praktično iskustvo rekultivacije pokazalo je da iskorišćenje i devastacija tokom rudarske aktivnosti predstavljaju opasnost ne samo za pogođena ...... publish and represent a detailed regulation on LRR. Regulation on Compiling Land Reclamation Plan (RCLRP) was issued in 2011, contains 7 parts (general rules, opencast coalmine, underground coal mine, metal mine, petroleum and natural gas (including coal-bed gas), construction projects, and uranium ...
... environment, taking into account landscape architecture (Ignatyeva, 2020). Failure to plan and to start rehabilitation early in the life of the operation may create an obstacle to building the knowledge and capacity necessary to deliver a sustainable outcome that meets agreed success criteria (Australian ...
... the usable values to degraded land by appropriate land modelling, improvement of grounds properties, water regulation, soils restoration and roads construction. Rehabilitation means the return to the natural state according to the original land development plan. Tthe return to the natural state ...Radmila Gaćina. "Legal framework for recultivation of degraded areas caused by mining exploitation" in Underground mining engineering, Belgrade : University of Belgrade - Faculty of Mining and Geology (2023). https://doi.org/10.5937/podrad2342027G
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Geotechnical aspects for construction of bank revetment along the Sava river for the “Belgrade waterfront”
Rakić Dragoslav, Basarić Irena, Stanić Nemanja, Filipović Vladimir, Berisavljević Dušan. "Geotechnical aspects for construction of bank revetment along the Sava river for the “Belgrade waterfront”" in Geotechnical aspects for construction of bank revetment along the Sava river for the “Belgrade waterfront”, Vrnjačka Banja:Srpsko geološko društvo (2018): 641-646
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Uniaxial compressive strength test before and after standard fire test on rock mass
Stefan Mitrović, Goran Todorović, Bojan Kostić, Milica Mirković-Marjanović, Nikola Božović, Marija Krstić, Aleksandar Erić, Radovan Gospavić, Snežana Ilić, Aleksandar Kijanović (2022)... fragments of rock minerals and mica (muscovite and chlorite) which are bound with a limonite clay cement. Quartz clusters dominate, building about 60% of the rock mass. They occur in grains of different sizes, from 0.05 to 0.5 mm. The grains are mostly sub-rounded and partly un-rounded. Some have ...
... determining strength and classification of rock mass. It is determined experimentally, by laboratory strength testing. Determination of uniaxial compressive strength is necessary, both in rock mechanics and in the field of application of obtained results during the construction of various underground ...
... underground structures and tunnels. If strength of the rock is lower, it will have an impact on the tunnel structure, different measures will be required to ensure the excavation and a larger amount of material needed for construction of tunnel structure. Incidental actions in tunnels, such as fire ...Stefan Mitrović, Goran Todorović, Bojan Kostić, Milica Mirković-Marjanović, Nikola Božović, Marija Krstić, Aleksandar Erić, Radovan Gospavić, Snežana Ilić, Aleksandar Kijanović. "Uniaxial compressive strength test before and after standard fire test on rock mass" in Fifth symposium of the Macedonian Association for Geotechnics, Ohrid, North Macedonia, 23-25. 06. 2022, Macedonian Association for Geotechnics (2022)
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Prioritization of strategic measures for strengthening the security of supply of the Serbian natural gas sector
To strengthen the security of supply of the Serbian gas sector, it is necessary to analyze the impact of planned strategic measures. The analysis involves the identification of the most influential threats to the security of natural gas supply and prioritization of the strategic measures for overcoming the consequences of threats. The proposed methodology is based on Fuzzy Analytic Hierarchy Process. The obtained weights for the identified threats and strategic measures are formed according to experts' judgments. The results ...Sigurnost snabdevanja, Donošenje odluka, Snabdevanje prirodnim gasom, Fazi AHP, Energetski indikatoriBoban Pavlović, Dejan Ivezić, Marija Živković. "Prioritization of strategic measures for strengthening the security of supply of the Serbian natural gas sector" in Energy Policy, Elsevier BV (2020). https://doi.org/10.1016/j.enpol.2020.111936
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Hazardous substances in karst aquifer waters - one of the results of the operational monitoring of groundwater in Serbia
У циљу оцене стања животне средине и разумевања потенцијалних узрока још раније евидентираног лошег хемијског статуса водног тела подземних вода „Крш–север“, извршенa je хидрогеолошка проспекција шире околине лежишта бакра Мајданпек, која је укључилаистраживање површинског копа, флотационог језера и главних карстних врела и пећина. Имајући у виду да се експлоатационо поље рудника бакра Мајданпек директно граничи са карстном издани и водним телом подземних вода „Крш–север“, параметри квалитета подземне воде су анализирани (in situ и лабораторијски) на два главна карстна врела ...Zoran Stevanović, Veljko Marinović, Branislav Petrović. "Hazardous substances in karst aquifer waters - one of the results of the operational monitoring of groundwater in Serbia" in Geoloski anali Balkanskoga poluostrva (Annales geologiques de la Peninsule balkanique), University of Belgrade, Faculty of Mining and Geology (2020). https://doi.org/10.2298/GABP201107010S
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Available technological procedures for capturing CO2 in the industrial and power generation sectors
Climate change is a major environmental issue caused by anthropogenic emissions of greenhouse gases. Capturing CO2 and storing it in suitable geological formations is one of the main technological solutions that can provide mitigation of CO2 emission into the atmosphere. Capturing CO2 represents the first phase in process of carbon capture and storage, and includes the application of various technologies for the separation of CO2 produced in the energy and industrial sectors. There are four main systems for capturing ...... CCS facilities in operation worlwide (Figure 2), where 12 of them include capturing CO2 from natural gas. There are also 21 facilities under construction and in advanced development [5]. Figure 2. CCS facilities in industrial sector in different stages of development [5] 251 2.2 ...
... commercial oxy-fuel combustion projects in operation worldwide [5]. This system has only been tested on pilot scale. There are few projects in construction and in early development. An illustration of oxy-fuel combustion process is given in Figure 5. Figure 5. An illustration of oxy-fuel combustion ...
... high energy consumption, and high capital and operating costs. Membrane-based separation has several advantages over other technologies due to its high CO2 capture efficiency and small capital and operational investments, and this process is fully automated, easy to control and operate. ...Lola Tomić, Vesna Karović Maričić, Dušan Danilović, Branko Leković, Miroslav Crnogorac. "Available technological procedures for capturing CO2 in the industrial and power generation sectors" in 8th International Conference Mining and Environmental Protection, 22 – 25th September 2021, Serbia, Univerzitet u Beogradu, Rudarsko-geološki fakultet (2021)
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Analiza seizmičkog dejstva eksplozije pri miniranju na primeru izrade tunela Golubac kod Golupca
Savremeno rudarstvo, a pogotovo masovna eksploatacija metaličnih ležišta, ne bi se mogla zamisliti bez primene eksploziva. Rudarstvo je privredna grana, gde su eksplozivi našli najširu primenu za eksploataciju čvrstih mineralnih sirovina. Primena energije eksploziva dovodi do poboljšanja tehničkoekonomskih pokazatelja pri eksploataciji mineralnih sirovina, ali i do pojave negativnih efekata koji prate radove na miniranju. Eksplozivni materijali u rudarstvu, geologiji i drugim delatnostima, svojim dejstvom narušavaju prirodnu sredinu u vidu drobljenja, razbacivanja komada stene, vazdušnih udara, pojave sezmičkih efekata, pojave ...Suzana Lutovac, Miloš Gligorić, Jelena Majstorović, Luka Crnogorac. "Analiza seizmičkog dejstva eksplozije pri miniranju na primeru izrade tunela Golubac kod Golupca" in XV Međunarodna konferencija OMC 2022, Zlatibor, 12-15. oktobar 2022., Jugoslovenski komitet za površinsku eksploataciju (2022)
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Određivanje zbijenosti starog komunalnog otpada
Bez obzira na savremene tretmane komunalnog otpada u svetu, u Srbiji je i dalje najčešći vid odlaganja na komunalne deponije, pa zbijanje otpada predstavlja jednu od ključnih faza formiranja deponije. Na ovaj način znatno se smanjuje zapremina otpada, ubrzava proces degradacije i produžava radni vek deponije. Zbog toga su geotehničke karakteristike komunalnog otpada prilikom zbijanja, veoma bitne kako u fazi projektovanja tako i u fazi izgradnje deponije i optimizacije prostora. Tu se pre svega misli na maksimalnu suvu zapreminsku ...Jovana Janković, Dragoslav Rakić, Irena Basarić Ikodinović, Tina Đurić. "Određivanje zbijenosti starog komunalnog otpada" in Konferencija Otpadne vode, komunalni čvrsti otpad i opasan otpad, 16-18.06.2021., Beograd : Udruženje za tehnologiju vode i sanitarno inženjerstvo (2021)
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Geotechnical Conditions of Industrial Waste Landfill Construction for U.S. Steel Serbia
Rakić Dragoslav, Vojnović Bogdan, Berisavljević Dušan, Basarić Irena. "Geotechnical Conditions of Industrial Waste Landfill Construction for U.S. Steel Serbia" in Proceedings of the XV Balkan Mineral Processing Congress, Sozopol, Bulgaria: (2013): 1056-1060
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Geotechnicsl conditions for construction of bank revetment on the Sava amphitheatre area in Belgrade - Serbia
Rakić Dragoslav, Stanić Nemanja, Basarić Irena, Filipović Vladimir. "Geotechnicsl conditions for construction of bank revetment on the Sava amphitheatre area in Belgrade - Serbia" in XVI Danube - European conference on geotechnical engineering – DECGE 2018, Skoplje:Wely (2018): 755-760
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Application of unconventional methods of underground premises construction in coal mines
Vidanović Nebojša, Ognjanović Saša, Ilinčić Nebojša, Ilić Nebojša, Tokalić Rade. "Application of unconventional methods of underground premises construction in coal mines" in Technics Technologies Education Management / TTEM 6 no. 4, Sarajevo, Bosnia & Herzegovina:DRUNPP, Sarajevo (2011): 861-865
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Construction of Bijelo Polje bypass on the section over the active landslide “Obrov”
Lapčević Radojica, Maksović Mišo, Bogdanović Snežana, Basarić Irena. "Construction of Bijelo Polje bypass on the section over the active landslide “Obrov”" in 2st Regional Symposium on Landslides in the Adriatic-Balkan Region - ReSyLAB 2015, Beograd:Rudarsko-geološki fakultet, Univerzitet u Beogradu (2015): 59-59
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Inženjerskogeološki uslovi izgradnje prve deonice autoputa Niš – Merdare“ (Engineering-geological conditions for the construction of the first section of Niš-Merdare highway),
Rakić Dragoslav, Berisavljević Zoran, Basarić Irena, Lazić Mirko, Miloš Stevanović. "Inženjerskogeološki uslovi izgradnje prve deonice autoputa Niš – Merdare“ (Engineering-geological conditions for the construction of the first section of Niš-Merdare highway)," in Treći Srpski kongres o putevima, Beograd: (2018): 12-23
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Parametric adjustment of a junction triangle in terms of the precise construction of haulage drives in underground mines
Ganić Aleksandar, Ristović Ivica, Đorđević Dragan, Vulić Milivoj. "Parametric adjustment of a junction triangle in terms of the precise construction of haulage drives in underground mines" in REM – Revista Escola de Minas 63 no. 3, Ouro Preto, Brasil:RBC Editoracao Eletronica (2010): 529-538
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Preliminary Examination of the System Fly Ash–Bottom Ash–Flue Gas Desulphurization Gypsum–Portland Cement–Water for Road Construction
Tokalić Rade, Marinković Slobodanka, Trifunović Prvoslav, Dević Gordana, Zildzović Snežana. "Preliminary Examination of the System Fly Ash–Bottom Ash–Flue Gas Desulphurization Gypsum–Portland Cement–Water for Road Construction" in Journal of Chemistry, :Hindawi Publishing Corporation (2013). https://doi.org/doi:10.1155/2013/421480
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The effect of the content of unburned carbon in bottom ash on its applicability for road construction
Trifunović Prvoslav, Marinković Slobodanka, Tokalić Rade, Matijašević Srdjan. "The effect of the content of unburned carbon in bottom ash on its applicability for road construction" in Тhermochimica Acta, 20 January 2010 498 no. 1–2, Amsterdam, Netherlands:Elsevier BV (2010): 1-6. https://doi.org/10.1016/j.tca.2009.10.022
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Case Study of Ventilation Method Development for Bar-Boljare Highway Tunnel Construction in Montenegro
Cvjetić Aleksandar, Lilić Nikola, Čokorilo Vojin, Milisavljević Vladimir. "Case Study of Ventilation Method Development for Bar-Boljare Highway Tunnel Construction in Montenegro" in Tehnika LXXII no. 5, Beograd:Savez Inžinjera i Tehničara Srbije (2017): 667-674