Претрага

Упит dcterms_subject_txt:diagnostics of operating coditions,Random Forest

2838 items

  • Assessing Criteria Weights by the Symmetry Point of Criterion (Novel SPC Method) - Application in the Efficiency Evaluation of the Mineral Deposit Multi-Criteria Partitioning Algorithm

    Zoran Gligorić, Miloš Gligorić, Igor Miljanović, Suzana Lutovac, Aleksandar Milutinović (2023)
    Information about the relative importance of each criterion or the weights of criteria can have a significant influence on the ultimate rank of alternatives. Accordingly, assessing the weights of criteria is a very important task in solving multi-criteria decision-making problems. Three methods are commonly used for assessing the weights of criteria: objective, subjective, and integrated methods. In this study, an objective approach is proposed to assess the weights of criteria, called SPC method (Symmetry Point of Criterion). This point ...
    Вишекритеријумско одлучивање, тежине критеријума, тачка симетрије критеријума, налазиште минерала, алгоритам, процена учинка

  • Transboundary groundwater resources of Serbia - present status and future needs for sustainable management

    Veljko Marinović, Branislav Petrović, Zoran Stevanović (2021)
    Republic of Serbia is located at the crossroads of Southeast and Central Europe and belongs to the Central Balkans. With its 88,360 km2, Serbia is one of the larger countries of the Balkan Peninsula. It borders 8 countries and has at least one transboundary aquifer (TBA) with each of them. According to evaluation conducted for UNECE in 2008, Serbia has a total of 17 TBAs, out of which 15 are shared with one neighboring country, while two aquifers are shared with two or three ...
    međugranične izdani, Srbija, monitoring podzemnih voda, upravljanje podzemnim vodama

  • Validation of vulnerability assessment by means of the Time Dependent, Model: case study from the Slovenian karst catchment

    Vladimir Živanović, Nataša Ravbar, Igor Jemcov (2019)
    Groundwater vulnerability assessment methods are continuously being developed and existing methods are very often modified to provide better simulation of natural protection conditions and more objective results. Most frequently used methods are based on calculation of predefined parameters influencing water infiltration and underground flow, which can often lead to bias conclusions related to vulnerability evaluations. Some other methods, like the Time Dependent Model (TDM) are based on an approach, where parametrization is obtained at the final stage of the ...
    Ocena ranjivosti podzemnih voda, karstne podzemne vode, TDM metoda, delineacija sanitarnih zona, Slovenački karst

  • Hazardous substances in karst aquifer waters - one of the results of the operational monitoring of groundwater in Serbia

    Zoran Stevanović, Veljko Marinović, Branislav Petrović (2020)
    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 ...
    Опасне супстанце, карстна издан, бакар, флотацијско језеро, Мајданпек, Србија

  • Prognozna ocena resursa kaolinitskih glina u sedimentnim basenima Srbije

    Vladimir M. Simić (2003)
    Kaolinitske gline predstavljaju jednu od privredno najznačajnijih nemetaličnih mineralnih sirovina u Srbiji. Ležišta tih glina odavno se istražuju i eksploatišu u Aranđelovačkom i Kolubarskom basenu i basenima vlašićkog antiklinorijuma. Osim toga, u većem ili manjem obimu istražene su mnoge lokalnosti, a na nekima od njih vršila se povremena eksploatacija. Dosadašnja istraživanja kaolinitskih glina imala su, međutim, prevashodno uzak istraživački cilj - utvrđivanje rezervi glina određenog ležišta, dok su istraživanja regionalnog karaktera bila malog obima i vezana za delove pojedinih ...
    prognozna ocena, resursi kaolinitskih glina, sedimentni baseni, Srbija, geologija, mineralogija, kvalitet, potencijalnost

  • Energetska bezbednost sektora prirodnog gasa Srbije

    Aleksandar Madžarević, Predrag Jovančić, Miroslav Crnogorac (2023)
    U prve dve decenije 21. veka obezbeđivanje sigurnosti snabdevanja prirodnim gasom domaćeg tržišta bio je jedan od prioriteta razvoja energetike Srbije. Istovremeno, aspekt sigurnog snabdevanja bio je neizostavni deo slagalice stvaranja energetske bezbednosti. Izražena uvozna zavisnost je dominantna karakteristika sektora prirodnog gasa, tačnije, Republika Srbija je snažno zavisna od ruskog gasa, sa više od 80% uvezenih količina gasa, a do pre dve godine snabdevala se isključivo kroz jednu interkonekciju. U radu se razmatra aktuelna situacija u sektoru prirodnog ...
    N-1, IDUPS, energetska bezbednost, sigurnost snabdevanja
    ... MG Energy Security of Serbian Natural Gas Sector Keywords (max. 5 words) Abstract In the first tvo decades of the 21st century, ensuring the security of the (max. 300 words) supply of natural gas to the domestic market was one of the priorities of the development of the Serbian energy sector ...
    ... time, the aspect of secure supply was an indispensable part of the puzzle of creating energy security. Pronounced import dependence is a dominant feature of the natural gas sector, more precisely, the Republic of Serbia is strongly dependent on Russian gas, with more than 80% of imported gas volumes ...
    ... presents a new methodology for determining the impact of system readiness and the number of sources and directions of supply, as well as their mutual interaction, on the security of supply, and ultimately on the energy security of the Republic of Serbia. N-1, IDUPS, security od supply, energy security ...

  • A contribution to the understanding of hydrochemical properties of thermomineral water on the L’dži locality (eastern part of North Macedonia)

    Hristina Petrova, Katarzyna Wątor, Piotr Rusiniak, Boris Vakanjac, Vesna Ristić Vakanjac, Ewa Kmiecik (2023)
    Regarding the aspect of mineral, thermo-mineral, and thermal waters, on the territory of the Republic of North Macedonia, there are 65 registered locations, of which 8 are categorized as spas. This includes the Kežovica spa, also known as the Štipska spa. In the vicinity of Kežovica Spa is the thermo-mineral L’Dži spring with mineralization around 1.3 g/L and the water temperature at the time of sampling was 50.1 °C. Spring L’Dži is generated by a fault structure and is ...
    thermo-mineral water, water chemistry, hydrochemical properties, L’dži locality, North Macedonia.

  • Equilibrium and kinetic studies of the reactions between [Ru(terpy)(bipy)Cl]Cl complex and biologically important N-donor ligands

    Aleksandar Mijatović, Biljana Petrović, Ratomir Jelić, Živadin Bugarčić (2011)
    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, ...

  • Using English Baits to Catch Serbian Multi-Word Terminology

    Cvetana Krstev, Branislava Šandrih, Ranka Stanković (2018)
    In this paper we present the first results in bilingual terminology extraction. The hypothesis of our approach is that if for a source language domain terminology exists as well as a domain aligned corpus for a source and a target language, then it is possible to extract the terminology for a target language. Our approach relies on several resources and tools: aligned domain texts, domain terminology for a source language, a terminology extractor for a target language, and a ...
    aligned texts, word alignment, terminology extraction, electronic dictionaries, morphological inflection
    ... frequency (*_FREQ), 3) count of chunks in text (*_COUNT), 4) count of present diacritics in Serbian terms (*_DIACRITICS), 5) number of characters in En- glish and Serbian terms (*_LEN), 6) ratio of diacritics count and length (*_DIACRITICS_LEN_RATIO) and 7) ra- tio of lengths of two different terms (*_LEN_RATIO) ...
    ... Terminology consists mainly of Multi-Word Terms (MWT) (data presented in Subsection 4.2. corrobo- rate this claim).1 3. A large portion of MWT terms in Serbian has a limited number of syntactic structures. Namely, 98% of all 1Multiword expressions (MWE) are lexical units composed of more than one word, which ...
    ... 4.2. Dictionary of Library and Information Science The development of the Dictionary of Librarianship: English-Serbian and Serbian-English (in this text referred to as ‘Dictionary’) (Ljiljana Kovačević, 2014) has started in 2001 at the National Library of Serbia, with the aim of presenting the l ...

  • Значај петрографске анализе флуидних инклузија

    Стефан Петровић, Милош Велојић (2022)
    У раду је истакнут значај петрографске анализе током истраживања флуидних инклузија и приказане могућности ове методе на примерима неких од карактеристичних петрографских појава из различитих минерала. Петрографска анализа је први корак у испитивању флуидних инклузија. Правилно спроведена, петрографска анализа омогућава одређивање генетске везе флуидних инклузија и минерала домаћина, препознавање карактеристика флуидних инклузија и релевантну интерпретацију података из наредних корака истраживања. Петрографском анализом се дефинишу: а) дистрибуција флуидних инклузија у минералу; б) облик, величина и фазни састав флуидних инклузија; в) групације ...
    петрографија, флуидне инклузије, флуиди, групације

  • Climate change and their imapct on karst groundwater

    Milan Đelić, Vesna Ristić Vakanjac (2021)
    In the last 30 years, there have been progressively more dry and rainy years, a reduced presence or even absence of snow cover, an increase in air temperature, large-scale fires, intensified glacier melting, and the like. Climate change certainly has an effect on all areas of economic activity, but its largest impact is on water resources and existing ecosystems. One of the most important water resources is groundwater, on account of which more than 70% of the population of ...
    climate change, aquifers, groundwater regime, vulnerability, karst

  • Long-term rockslope monitoring and rockfall prediction

    Miloš Marjanović, Biljana Abolmasov, Marko Pejić, Jelka Krušić (2021)

  • Balance between tectonics and sedimentation during geodynamic evolution of the Adria-Europe convergence zone in central Serbia

    Uroš Stojadinović, Nemanja Krstekanić, Bojan Kostić, Tamara Bogdanović (2021)
    ... infill and basement of the European fore-arc over the Sava trenchturbidites. The continued continental collision led to the propagation of thrusting during Eocene,which was characterized by formation of the large offset out-of-sequence thrusts. The eductionthat followed break-off of the Neotethys slab ...
    ... sedimentation during geodynamicevolution of the Adria-Europe convergence zone in central Serbia Uros Stojadinovic1, Nemanja Krstekanić1,2, Bojan Kostić1, and Tamara Bogdanović3 1Faculty of Mining and Geology, University of Belgrade, Belgrade, Serbia. 2Faculty of Geosciences, Utrecht University, Utrecht ...
    ... радовима запослених доступним у слободном приступу. - Претрага репозиторијума доступна је на www.dr.rgf.bg.ac.rs The Digital repository of The University of Belgrade Faculty of Mining and Geology archives faculty publications available in open access, as well as the employees' publications. - The Repository ...

  • Srbija u OneGeology Europe

    Danka Blagojević, Ranka Stanković, Petar Stejić, Velizar Nikolić (2014)
    Геолошки завод Србије као носилац Пројекта ОneGeologyEurope заједно са Рударско геолошким факултетом и Министарством за природне ресурсе, рударство и просторно планирање су се укључили у међународни Пројекат OneGeology Europe у мају 2013. године у већ поодмаклој фази израде Пројекта. До краја 2013. године испунили су завршене активности које треба да доведу до пуноправног укључења у Пројекат чиме је Република Србија нашла своје место на Геолошкој карти Европе 1:1М. Геолошка карта Србије 1:1М представља компилациону односно поједностављену верзију ОГК 1:500 ...
    OneGeologyEurope, метаподаци, хармонизација података, вишејезични мета-информациони систем
    ... European trend of exchanging data on the basis of uniform criteria for separation, harmonization and improvement of the results achieved. The positive side of this kind of data archiving, is that it ensures that the data are archived, accessible and harmonized. It enables the comparison of data from ...
    ... European trend of exchanging data on the basis of uniform criteria for separation, harmonization and improvement of the results achieved. The positive side of this kind of data archiving, is that it ensures that the data are archived, accessible and harmonized. It enables the comparison of data from different ...
    ... ty of metadata is developed a multilingual terminology database. Each participating country, or national data provider, has received a list of terms in English which was translated into the native language of one-to-one, so that the integration of all possible paired terms describes sets of data ...

  • Флотабилност халкопирита из полиметаличне руде рудника „Рудник”

    Ђурица Н. Никшић (2022)
    The doctoral dissertation Chalcopyrite flotability from polymetallic "Rudnik" mine ore consists of two parts. The first part is a general part in which the theoretical foundations of the flotation concentration process, the flotation properties of chalcopyrite, the influence of certain flotation reagents and the mechanism of action on the flotation properties of chalcopyrite are presented. This part also describes the process of flotation concentration of polymetallic ore from the "Rudnik" mine. The second part is ...
    Халкопирит, флотацијска концентрација, KAX, NaCN, pH пулпе

  • 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
    ... in the catchment of the Rosomačka, and Senokos and Kamenica in the catchment of the Vodenička. After World War II, the population of these villages declined. According to Wikipedia, based on the 1948 census, the population of Slavinja was 403, of Rosomač 606, of Senokos 568 and of Kamenica 365. However ...
    ... Further downstream, at the beginning of the village of Senokos, the Vodenička receives a nameless right-bank tributary and in the middle of the village its most important tributary, the Gradeščica, from the left. After the village of Senokos (and the mouth of the Gradeščica), the Vodenička flows south ...
    ... catchments of the Dojkinačka and the Rosomačka, such that the immediate catchment of the Visočica itself is 176 - 139 - 22.9 = 14.1 km 2. Along the subject reach the Visočica receives the discharges of the said tributaries and from the immediate catchment in the amount of 3.98 m 3 /s, of which 3 ...

  • The shear strength evaluation of rough and infilled joints and its indications for stability of rock cutting in schist rock mass

    Dušan Berisavljević, Zoran Berisavljević, Svetlana Melentijević (2022)
    Construction of E75 highway section through Grdelica gorge was one of the most demanding projects realized in recent Serbian history. The alignment approximately 25 km long consists of several tens of bridges, two tunnels, three galleries and cuts with total length of 6 km. The alignment passes through highly anisotropic Palaeozoic schist rock formation of different weathering grades. This study focuses on shear strength properties of discontinuities, which are found to be the critical feature contributing to the occurrence ...
    Diskontinuitet, nelinearni kriterijum loma, anizotropija, hiperbolična anvelopa

  • Aлтерације перидотита контролисане карактером флуида на примеру харцбургита Рудника - Серпентинизација или талкизација?

    Стефан Петровић, Наталија Батоћанин (2020)
    У раду су приказани резултати испитивања серпентинисаних харцбургита Брђана (43°58'45.1" СГШ, 20°25'12.6" ИГД) и талкизираних харцбургита откривених у интервалу 429-559.8 m у истражној бушотини 330А/18 (44°07'33.2" СГШ, 20°30'28.5" ИГД) на Руднику. Узорци оба локалитета показују карактеристике резидуалних харцбургита из омотача, односно тектонита; лепидобластичне, бластозрнасте, или порфирокластичне структуре и масивне текстуре. Серпентинисани харцбургити и серпентинити Брђана су изграђени од серпентина, ретких реликата оливина и ортопироксена, акцесорног спинела, и веома ретког секундарног магнезита и магнетита. Најдоминантнији састојак (местимично гради и преко ...
    Рудник, Брђани, харцбургити, серпентинити, талк
    ... 2 mm thick) of fibrous serpentine of different generations. Serpentine is magnesium-rich variety of average composition [(Mg10.66Fe2+ 1.04)11.70(Fe3+ 0.06Al0.03Si7.94)8.03O5(OH)4]. Orthopyroxene is the second mineral in abundance making up to 30 vol. % of rocks. Subhedral grains of it, sporadically ...
    ... Студентски трг 3/III, Београд, Србија; University of Belgrade, Faculty of Geography, Studentski trg 3/III, 11000 Belgrade, Serbia 2 Универзитет у Бeограду, Рударско-геолошки факултет, Ђушина 7, 11000 Београд, Србија; University of Belgrade, Faculty of Mining and Geology, Djusina 7, 11000 Belgrade, Serbia ...
    ... Projection of the borehole 330A/18. Detail from the geological map of the Rudnik deposit (DJOKOVIĆ et al., 2014). Слика 2. Геолошка карта ширег подручја Брђана. Детаљ са ОГК 1:100.000, лист "Чачак"- К 34-5 (BRKOVIĆ et al., 1970). Figure 2. Geological map of the broader area of the locality ...

  • Synthesis and characterization of nanostructured Ca0.9Er0.1MnO3

    Tijana B. Vlašković, Bojana Laban, Maja Milošević, Maria Čebela, Vladimir Dodevski, Milena Rosić (2023)
    ... Belgrade - Department of Mineralogy, Crystallography, Petrology and Geochemistry, Faculty of Mining and Geology, Đušina 7, 11000 Belgrade, Serbia " University of Belgrade - Laboratory for Material Science, Institute of Nuclear Science „ Pinča“, National Institute of the Republic of Serbia, P.O. Box ...
    ... tion of nanostructured Ca„Er.,MnO, Tijana B. Vlašković-, Bojana Laban!, Maja Milošević?, Maria Čebelaš, Vladimir Dodevski*, Milena Rosić* _ University of Priština in Kosovska Mitrovica, Faculty of Sciences and Mathematics, Lole Ribara 29, 38220 Kosovska Mitrovica, Serbia "University of Belgrade ...
    ... радовима запослених доступним у слободном приступу. - Претрага репозиторијума доступна је на www.dr.rgf.bg.ac.rs The Digital repository of The University of Belgrade Faculty of Mining and Geology archives faculty publications available in open access, as well as the employees' publications. - The Repository ...

  • Examination of the possibility of obtaining pyrite concentrate from the flotation tailings of the Lece mine

    Predrag Lazić, Đurica Nikšić, Dejan Stojanović, Tamara Stojanović (2022)
    Рудник Леце је карактеристичан по томе што у флотацијским концентратима олова и цинка као корисну примену има злато и сребро. Практично од отварања рудника и флотације трају истраживања и борба за што боље технолошке показатеље на сва четири платива метала (олово, цинк, злато и сребро) посебно на злату. Овај рад представља допринос тој борби у циљу повећања искоришћења злата. Како је начин појављивања злата веома различит (самородно, са оловом и цинком, са пиритом и кварцом) то је и технолошка ...
    Флотација Леце, концентрат пирита, злато, сребро