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Упит dcterms_subject_txt:grain size distribution

508 items

  • Hibridni sistem za planiranje i analizu ventilacije rudnika

    Nikola Lilić, Ranka Stanković, Ivan Obradović (2000)
    Ventilacija rudnika, informacioni sistemi
    ... Aerodynamic Resistance Distribution in Ventilation Networks Modeling and Development of a Software Package for Defining Aerodynamic Resistance Distribution in Complex Mine Ventilation Networks…………………...130 CHAPTER 5 MODELING OF AIR FLOW DISTRIBUTION Air Flow Distribution………………………………………………………………… ...
    ... N., KUZMANOVIĆ D., “Research into possibility of optimizing air distribution in mine ventilation networks“, XIX SYM-OP-IS , Zbornik radova str. 325-328, Beograd, (1992). 47. LILIĆ N., KUZMANOVIĆ D., “Optimization of air distribution in mine ventilation networks“, Yugoslav Journal of Operations Research ...
    ... ventilacije rudnika 8 Kako koristiti elektronsku knjigu? Sadržaj knjige UML notacija Index About the book Partially Regulated Distribution Regulated Air Distribution Methods for Ventilation Network Solving……………………………………………….154 Hardy-Cross Method Application of Genetic Algorithms in Mine Ventilation ...

  • The analysis of the geothermal energy capacity for power generation in Serbia

    Jana Stojković, Goran Marinković, Petar Papić, Mihailo Milivojević, Maja Todorović, Marina Ćuk (2013)
    Renewable Energy, Sustainability and the Environment
    ... of silicate minerals in igneous rocks with the highest proportion of silica in the continental crust. Alkali feldspar and quartz also have large distribution; the two groups of minerals and plagioclases are tectosilicates [10]. Silicon occurs in elevated concentrations in geothermal water as well, for ...

  • A Mathematical Learning Environment Based on Serbian Language Resources

    Radojičić Marija, Obradović Ivan, Stanković Ranka, Utvić Miloć, Kaplar Sebastijan (2018)
    In recent years, in line with ever growing usage of Information technology, the learning environments are changing. The amount of available learning materials in various forms has increased. These new environments demand comprehensive learning systems, which enable management of the learning corpus with special attention paid to relevant lexical resources. In this paper we present the concept of a Mathematical Learning Environment in Serbian (MLES), which is based on a corpus of mathematical materials and various lexical resources, enabling ...
    mathematical content, text processing, mathematical formulae
    ... the search results are presented. Annotation also alleviates the statistical analysis of the corpus, namely automatic assignment of the distribution of annotated linguistic properties. 5. APPLICATION TERMI The Termi application has recently been launched to serve as a support for the d ...

  • Fuzzy optimization in hydrodynamic analysis of groundwater control systems: Case study of the pumping station “Bezdan 1”, Serbia

    Dragoljub Bajić, Dušan Polomčić (2014)
    A groundwater control system was designed to lower the water table and allow the pumping sta-tion “Bezdan 1” to be built. Based on a hydrodynamic analysis that suggested three alternative solutions, mul-ticriteria optimization was applied to select the best alternative. The fuzzy analytic hierarchy process methodwas used, based on triangular fuzzy numbers. An assessment of the various factors that influenced the selec-tion of the best alternative, as well as fuzzy optimization calculations, yielded the “weights” of the alternativesand the ...
    groundwater lowering, groundwater management scenario, fuzzy analytic hierarchy process,expert knowledge, triangular fuzzy numbers, linguistic variables
    ... of the analyzed alternatives. For each alternative, the characteristics of the groundwater control system: the number of wells and their spatial distribution, and the time need- ed to achieve maximal lowering of the water table below the excavation for the “Bezdan 1” PS, were defined as follows: • A ...

  • Konceptualni model hidrogeotermalnog sistema šire okoline Brusa - geološki, geofizički i hidrogeološki uslovi / Conceptual model of hydrothermal system of Brus area - geological, geophysical and hydrogeological condition

    Dejan Milenić, Ana Vranješ, Marinko Toljić, Ivana Vasiljević, Natalija Radosavljević, Matija Ognjanović (2024)
    Na širem području Brusa izvedena su naučna multidisciplinarna istraživanja za potrebe ocene geotermalnog potencijala sa zadatkom de9inisanja uslova formiranja geotermalnih i termomineralnih resursa. Interpretacijom podataka zaključeno je da je na predmetnom terenu formiran "hibridni" hidrogeotermalni sistem, koji sadrži elemente sistema u rov-strukturi i elemente konvektivnog hidrogeotermalnog sistema sa rezervoarom u pokrivaču granitoidne intruzije. Sistem čine dva nezavisna hidrogeotermalna rezervoara. Prvi rezervoar formiran je u gornjokrednim krečnjacima na dubini od oko 1550 m. Maksimalne prognozne temperature hidrogeotermalnih resursa u krečnjačkom ...
    hidrogeotermalni sistem, gornjokredni krečnjaci, trijaski mermeri, Brus

  • A Tool for Enhanced Search of Multilingual Digital Libraries of E-journals

    Ranka Stanković, Cvetana Krstev, Ivan Obradović, Aleksandra Trtovac, Miloš Utvić (2012)
    This paper outlines the main features of Bibliša, a tool that offers various possibilities of enhancing queries submitted to large collections of TMX documents generated from aligned parallel articles residing in multilingual digital libraries of e-journals. The queries initiated by a simple or multiword keyword, in Serbian or English, can be expanded by Bibliša, both semantically and morphologically, using different supporting monolingual and multilingual resources, such as wordnets and electronic dictionaries. The tool operates within a complex system composed ...
    multilingual digital libraries, query expansion, TMX
    ... category of unstructured and semi-structured collections of data. This term generally refers to heterogeneous (different in format, standard and size, etc.) data, of a potentially variable structure, the content of which can grow exponentially. Manipulation of such data, which in general encompass ...

  • Geoenvironmental Investigations at a Smelter Location in Bor (Serbia)

    Petar Papić, Zvonimir Milijić, Jana Stojković, Jovana Milosavljević, Maja Todorović, Marina Ćuk, Željko Kamberović (2014)

  • A Fuzzy Expert Model for Availability Evaluation

    Dejan Ivezić, Miloš Tanasijević, Predrag Jovančić, Radiša Đurić (2019)
    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 ...
    raspoloživost, ekspertski sistem, fazi teorija, buldozeri
    ... min{μR j = 1, …, 5, μM j = 1, …, 5, μS j = 1, …, 5}, for all o = 1 to O (4) - Outcomes are grouped according to their values Ωc, namely the size of j. - Find the MAXimum between previously identified minimums for each group of outcomes. The maximum which corresponding the jth value is calculated ...

  • Flotability of chalcopyrite from the Rudnik deposit

    Đurica Nikšić, Predrag Lazić, Milena Kostović (2021)
    Директно селективно флотирање олова, бакра и цинка у флотацији рудника „Рудник” датира од 1984. године. Технолошка шема омогућава директно издвајање селективних концентрата у три циклуса. У првом циклусу се издваја минерал олова (галенит), док су минерал бакра (халкопирит) и минерал цинка (марматит) депримирани. У другом циклусу се оток концентрације минерала олова кондиционира и припрема за издвајање минерала бакра. Након кондиционирања, у овом циклусу се издваја минерал бакра. У трећем циклусу се оток концентрације минерала бакра кондиционира и припрема за ...
    Директно селективно флотирање, халкопирит, KAX, NaCN

  • Praktikum za vežbe iz Informatike 1

    Ranka Stanković, Ivan Obradović, Olivera Kitanović, Mirjana Banković (2014)
    informatika

  • 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
    ... national geological units in a homogeneous way: lithology, age, genesis, tectonic structures. Faults were selected based on two criteria: regional distribution and tectonic significance. This paper presents the map made especially for One Geology Plus Europe Project. Figure 4, presents the level of ...
    ... national geological units in a homogeneous way: lithology, age, genesis, tectonic structures. Faults were selected based on two criteria: regional distribution and tectonic significance. This paper presents the map made especially for One Geology Plus Europe Project. Figure 4, presents the level of the ...

  • Tеслапедиа као централна база библиографских података о Николи Тесли

    Ивана Ћирић, Сузана Топаловић, Биљана Лазић (2013)
    Циљ овог рада је да прикаже идеју и процес израде најкомплетније електронске библиографске базе о Николи Тесли, симболично назване Теслапедиа. Oвaквa бaзa би укључивaлa Teслину библиoгрaфиjу, кao и библиoгрaфиjу других o њeму. Сaм кoнцeпт рaзвoja Teслaпeдиe je видљив крoз двe глaвнe идeje. Првa идeja je зaснoвaнa нa пoстaвљaњу свих пoстojeћих библиoгрaфских јединица кoje Mузej пoсeдуje нa oдрeђeну вeб-лoкaциjу a другa, пoдjeднaкo вaжнa, oглeдa сe у мoгућнoстимa дaљeг рaзвoja и нaдгрaдњe сaмe структурe базе придруживaњeм нoвих библиoгрaфских пoдaтaкa. Oвa бaзa ...
    библиографије
    ... Kržaк, Informacijsкa tehnologija, arhivistiкa i historiografi ja, (Zagreb: Historijsкi zborniк, 1997), 215.; Fritz Machlup, The production and distribution of knowledge in the United States, (Princeton: Princeton University Press, 1962). до при не су но вом раз во ју и ста ту су ар хи ва, као не- ...
    ... Miroslav. Informacijsкa tehnologija, arhivistiкa i historiografi ja. Zagreb: Historijsкi zborniк, 1997. 4. Machlup, Fritz. The production and distribution of кnowledge in the United States. Princeton: Princeton University Press, 1962. 5. Rudinska, Iwona. “Introduction“. The Tesla collection. ht ...

  • Application of Project Management Process on Environmental Management System Improvement in Mining-Energy Complexes

    Jelena Malenović Nikolić, Dejan Vasović , Ivana Filipović , Stevan Mušicki, Ivica Ristović (2016)
    menadžment, rudrastvo i energetski kompleksi, okruženje, održivi razvoj, mrežno planiranje
    ... generations without compromising the ability of future generations to meet their needs. Brundtland definition of sustainable development implies equal distribution of resources, not only spatially between users in a certain period, but also temporally between different generations of users over time. The idea ...
    ... level of nitrogen oxide emissions, while thermal power plant “Kostolac B” was in fifth place in 2012 and 2013 and in third place in 2014. Spatial distribution of emissions of pollutants is determined according to the level of emissions, in metric tons per annum. Emission values are classified into six ...
    ... have the fifth level of emissions of sulfur oxides (from 50,000 to 100,000 t/year) and nitrogen (from 5000 to 10,000 t/year). Based on the spatial distribution of the particulate emissions, it is concluded that thermal power plants “Kostolac A” and “Kostolac B” are in an area with the fifth level of pollution ...

  • The Importance of Detailed Groundwater Monitoring for Underground Structure in Karst (Case Study: HPP Pirot, Southeastern Serbia)

    Marina Čokorilo Ilić, Ana Mladenović, Marina Ćuk, Igor Jemcov (2019)
    Geography, Planning and Development,Aquatic Science,Biochemistry,Water Science and Technology
    ... were particularly pronounced. The analysis of the total water losses from the tunnel showed that they were relatively acceptable and that their distribution along the tunnel was not uniform. The closer assessment of the zone with the highest water losses pointed to the part of the tunnel where the concrete ...

  • Primena AHP и WoEmetode u proceni podložnosti terena na kliženje za područje opštine Krupanj

    Biljana Abolmasov, Jelka Krušić, Katarina Andrejev, Miloš Marjanović, Ranka Stanković, Uroš Đurić (2017)
    ... but WoE has slightly better va- lidation parameters. These results are a solid background for general overview of the landslide susceptibility distribution at municipality scale, and can be successfully used for further landsli- de risk assessment or large scale planning. Key words: landslides, AHP ...

  • Advantages and Disadvantages of a Parallel and Zigzag Method of Acquisition in Walking Mode in Magnetometric Archeological Research

    Mirko Petković, Vesna Cvetkov, Branislav Sretenović (2014)
    магнетометријска испитивања, цик-цак и паралелна аквизиција у ходајућем моду, линеарне аномалије, археологија
    ... this error can result in the complete fl ecking of the anomalies, such as in this case. Expecting that the GPS error will lead to such a spatial distribution of the measured points, be- fore and after the completion of the measurements with GPS, the geographic coordinates of the cor- ner points of the ...

  • Петрологија црвених пешчара источне Србијe

    Андреј Марковић (2024)
    У источној Србији формација црвених пешчара има велико распрострањење и улази у састав многих планина овог дела наше земље. Формацију чине кластичне стене интензивно црвене боје псамитске, ређе псамитско-псефитске структуре и алевритске структуре. Ове стене леже трансгресивно преко старијих пермо-карбонских и карбонских стена, док навише прелазе у доњотријаске седименте. Формација црвених пешчара захвата два појаса унутар Карпато-балканида – унутрашњи и средишњи део. Узорци анализирани у овом раду део су средишњег појаса. Тема завршног рада је петрологија црвених пешчара источне ...
    источна Србија, црвени пешчар, петролошко-минералошке карактеристике, аркозе
    ... analyzed sandstones are defined as siltstone sandstones-arkoses. They are built of quartz, feldspar, rock fragments, micas and binders. According to size, degree of roundness and sorting, they are determined as fine-grained medium-sorted sandstones-siltstone- psammitic structure. The binder is calcite ...

  • A multi-criteria approach for assessing the potential of renewable energy sources for electricity generation: Case Serbia

    Boban Pavlović, Dejan Ivezić, Marija Živković (2021)
    When assessing the potential of renewable energy alternatives for electricity generation, it is necessary to implement a multi-perspective approach that includes economic, technical, environmental, and socio-political criteria. For the evaluation of criteria and alternatives, the Fuzzy Analytical Hierarchy Process (FAHP) method is applied. The obtained weights are formed according to the values of energy indicators and expert judgments. The use of a fuzzy numerical value scale for the assessment of expert judgments and energy indicators provides a more sensitive ...
    Proizvodnja električne energije, Obnovljivi izvori energije, Višekriterijumsko odlučivanje, Srbija
    ... Electric Power Industry of Serbia (EPS) is the largest energy company in Serbia. The main activities of EPS are electricity generation, supply, distribution, and trading. Electricity generation in Serbia relies on lignite for around 70% of its electricity production. (EPS, 2018). EPS operates with 6 ...
    ... Parous- sos, 2018). 4. Local biodiversity (SC4) - negative impacts on biodiver- sity from renewable energy projects, as well as energy transport and distribution system (Moreira, 2019). Using the predetermined linguistic variables experts performed a pairwisecomparison of RESs with respect to the chosen ...

  • Hydrochemical features and their controlling factors in the Kucaj-Beljanica Massif, Serbia

    Fen Huang, Ljiljana Vasic, Xia Wu, Jianhua Cao, Saša Milanovic (2019)
    Earth-Surface Processes, Geology, Pollution, Soil Science, Water Science and Technology, Environmental Chemistry, Global and Planetary Change

  • Споменица 1991. – 2015. година: 135 година геологије и 70 година рударства на Универзитету у Београду

    главни и одговорни уредник Душан Поломчић (2016)
    Рударско-геолошки факултет
    ... stability in unsatureated overconsolidated clayey soil. 9th Congress IAEG – Durban South Africa. HADŽI-NIKOVIĆ G., 2009: The influence of the grain-size distribution and soil structure on the unsaturated shear strength of loess sediments in Belgrade, central Serbia. Geološki anali Balkanskoga poluostrva ...
    ... , 2012: Exchange-Bias and Grain-Surface Relaxations in Nano- structured NiO/Ni Induced by a Particle Size Reduction. Journal of Physical Chemistry, C 116 (7), 4356–4364. JOVIĆ N., PREKAJSKI M., KREMENOVIĆ A., JANČAR B., KAHLENBERG V., ANTIĆ B., 2012: Influence of size/crystallinity effects on the ...
    ... anatase/rutile size-strain modelling. Journal of Applied Cry- stallography, 46, 1874–1876. VUCINIC-VASIC M., BOZIN E.S., BESSAIS L., STOJANOVIC G., KOZMIDIS-LUBURIC U., ABEYKOON M., JANCAR B., MEDEN A., KREMENOVIC A., ANTIC B., 2013: Thermal Evolution of Cation Distribution/Crystallite Size and their ...