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Упит dcterms_subject_txt:fluid production

367 items

  • Improvement of education through the cooperation between CEEPUS EURO Geo-Sci network and scientific projects: examples from UB-FMG

    Kristina Šarić, Dejan Prelević, Miloš Marjanović, Uroš Stojadinović, Vladimir Simić (2024)
    CIII-RS-0038, Recon Tethys, DEMONITOR, TMCmod, REASONING

  • Optimizacija utovarno-transportnih sistema u funkciji planiranja površinskog kopa

    Mirjana V. Banković (2018-07-13)
    Profitabilna eksploatacija sve složenijih ležišta je težak zadatak koji zavisi odtemeljnog procesa analize, planiranja i projektovanja rudnika. Izvodljiv strateškiplan mora da zadovoljava društvena, regulatorna, tehnološka, geometrijska iekonomska ograničenja. Kako bi se postigao osnovni cilj, odnosno profitabilnost iodrživost rudarskog projekta na duži period, neophodno je unapređenjematematičkih modela i informatičke podrške procesima planiranja i optimizacijekoji će omogućiti efikasnu realizaciju ovih ciljeva...
    tehnološki model, integralni model, planiranje, optimizacija,utovarno-transportni sistem, neto sadašnja vrednost projekta
    ... Reclamation and Environment, 6 (2), 57-59. Dagdelen, K., 1985, Optimum multi period open pit mine production scheduling. PhD Thesis, Colorado School of Mines. Dagdelen, K., 1986, Optimum open pit mine production scheduling by Lagrangian parameterization. Proc. of the 19th APCOM, 127-142. Darwen, P. J., ...
    ... Johnson, T., 2005, Fundamental tree algorithm in optimising production scheduling for open pit mine design. Mining Technology, 114 (1), 45-54. 202 Ramazan, S., Dimitrakopoulos, R., 2007, Stochastic optimisation of long-term production scheduling for open pit mines with a new integer programming ...
    ... Santos, J., 2016, Cost value of High-angle conveying - 2011. Mining engineering. Englewood, USA: SME. Douglas, J.,1964, Prediction Shovel-Truck Production: A Reconciliation Of Computer And Conventional Estimates, Technical report no. 37, prepared for: Stanford University, California Durst, W., Vogt ...

  • Integrated Stratigraphy of the Middle–Upper Jurassic of the Krížna Nappe, Tatra Mountains

    Renata Jach, Nevenka Đerić, Špela Goričan, Daniela Reháková (2014)
    carbon and oxygen isotopes, radiolarians, calcareous dinoflagellates, radiolarites, Krížna Nappe, West ern Carpathians, Tethys
    ... is less susceptible to alteration by burial diagenesis than the oxygen record (e.g., Banner and Hanson, 1990; Marshall, 1992). Usually, the rock-fluid al- teration during diagenesis results in a decrease of 6O val- ues, whereas diagenetic modification of Š1ŠC values may remain insignificant (e ...
    ... & ŠC. Increased 6'ŠC values in the Late Callovian, Middle Oxfordian and Late Kimmeridgian (Moluccana Zone) correspond with enhanced radiolarian production. A significant increase in CaCOy content is recorded just above the Late Callovian 6&5C excursion, which coincides with a transition from green ...
    ... on and accumulation (e.g., Jarvis ef al., 2002). It is noteworthy that high biosiliceous productivity associated with a crisis in ca.rbonate production appecars to be corre- lated with positive 8ŠC events (e.g., Bartolini ef a/., 1996; Racki and Cordey, 2000; Morettini ef al1., 2002; O' Dogherty ...

  • Two approaches to compilation of bilingual multi-word terminology lists from lexical resources

    Branislava Šandrih, Cvetana Krstev, Ranka Stanković (2020)
    In this paper, we present two approaches and the implemented system for bilingual terminology extraction that rely on an aligned bilingual domain corpus, a terminology extractor for a target language, and a tool for chunk alignment. The two approaches differ in the way terminology for the source language is obtained: the first relies on an existing domain terminology lexicon, while the second one uses a term extraction tool. For both approaches, four experiments were performed with two parameters being ...
    Linguistics and Language,Software,Artificial Intelligence,Language and Linguistics

  • Генеза хидротермалног Cu-Au система Чукару Пеки (Источна Србија)

    Милош Велојић (2021)
    Главни циљ испитивања хидротермалног система Чукару Пеки је разумевање процеса који су довели до његовог настанка, а посебно еволуције рудоносних флуида из којих је настала рудна минерализација. Утврђено је да је овај систем настао у периоду пре 86,78 - 85,19 Ma из магматског интрузива који је био богат водом и имао висок оксидативни потенцијал. Током хлађења, из овог магматског интрузива су издвојени веома врели флуиди, који су имали температуре изнад 600°С и висок салинитет. У ...
    Борска металогенетска зона, Тимочки магматски комплекс, порфирска лежишта, високосулфидациона лежишта, флуидне инклузије, рудне парагенезе, геохронологија, хидротермалне алтерације, LA-ICP-MS
    ... Рош и Камењар) и издвојио 2 типа флуида: 1) средњетемпературне хидротермалне флуиде (150-250°C) са салинитетом од 2-14 теж. % NaCl екв. и ГЕНЕЗА ХИДРОТЕРМАЛНОГ Cu-Au СИСТЕМА ЧУКАРУ ПЕКИ (ИСТОЧНА СРБИЈА) 5 2) нискотемпературне хидротермалне флуиде (130-220°C) ниског салинитета (< ...
    ... путем фазног издвајања флуида из кристалишуће магме. Обично се овим путем издваја суперкритични флуид средњег салинитета, који се кључањем раздваја на течну фазу високог салинитета и гасовиту фазу ниског салинитета (Bodnar, 1995; John et al., 2010). Како би издвајање флуида и метала било успешно ...
    ... формирања већине порфирских лежишта слани магматски флуиди били доминатни, а да у каснијим стадијумима метеорски флуиди добијају све већу важност (Hedenquist & Lowenstern, 1994). На слици 50 приказано је претпостављено кретање магматских и метеорских флуида у хидротермалном систему током формирања порфирских ...

  • Development of Open Educational Resources (OER) for Natural Language Processing

    Cvetana Krstev, Biljana Lazić, Ranka Stanković, Giovanni Schiuma, Miladin Kotorčević (2015)
    In this paper we present the development of an online course at the edX BAEKTEL platform named “Lexical Recognition in the Natural Language Processing (NLP)”. It is based on the course of the same name for PhD studies at the University of Belgrade, Faculty of Philology. There are not many courses in Computational Linguistics (CL) on OER platforms, and there is none in Serbian either for CL or NLP. We have developed this course in order to improve this ...
    E-Learning, Open Educational Resources, Computational Linguistics, Lexical Resources, edX
    ... almost each moment. The vast majority of information is still expressed in natural language, so language processing has an important role in production of information.[5] Computational Linguistics started to attract attention of researchers in Serbia more than 35 years ago when Professor ...

  • Towards translation of educational resources using GIZA++

    Ivan Obradović, Dalibor Vorkapić, Ranka Stanković, Nikola Vulović, Miladin Kotorčević (2016)
    ... segments). Mistakes in pairing, however, must be corrected manually, which is done through the Concordancier software. [13] The next step is the production of a TMX document [14]. The document consists of
    , ,

    (paragraph), (Translation Unit) and (Translation unit variant) ...

  • 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
    ... separated from the closed loop working fluid used in the turbine by a heat exchanger. The hot water gives up its heat in the heat exchanger to a working fluid with a low boiling point and high vapour pressure at low temperatures when compared to steam. The working fluid is usually ammonia or some organic ...
    ... lower fluid temperatures, chalcedony is used, which controls the amount of dis- solved silicon. Many geothermometers have been developed, of which the quartz geothermo- meter for thermal water most frequently uses the formula [7]: t [ C] (SiO2 � � � � 1309 519 27315 [ . log )] . (1) Fluid temperatures ...
    ... than 150 °C. For lower fluid temperatures, chalcedony is used, which controls the amount of dis- solved silicon. Many geothermometers have been developed, of which the quartz geothermo- meter for thermal water most frequently uses the formula [7]: _ 1309 [5.19 — log(SiO, )] Fluid temperatures from 120° ...

  • 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
    ... their essence is to handle knowledge that can be highly imprecise and expressed verbally. In fuzzy logic systems this “knowledge” is represented by production (expert) rules, which are a suitable verbal means of expressing the knowledge of each individual. Consequently, fuzzy logic is the codi- fication ...

  • Part of Speech Tagging for Serbian language using Natural Language Toolkit

    Ranka Stanković, Boro Milovanović (2020)
    Dok se razvijaju složeni algoritmi za NLP (obrada prirodnog jezika), osnovni zadaci kao što je označavanje ostaju veoma važni i još uvek izazovni. NLTK (Natural Language Toolkit) je moćna Python biblioteka za razvoj programa zasnovanih na NLP-u. Pokušavamo da iskoristimo ovu biblioteku za kreiranje PoS (vrsta reči) oznake za savremeni srpski jezik. Jedanaest različitih modela je kreirano korišćenjem NLTK API-ja za označavanje. Najbolji modeli se transformišu sa Brill tagerom da bi se poboljšala tačnost. Obučili smo modele na označenom ...
    obrada prirodnog jezika, mašinsko učenje, neuronske mreže
    ... 2004. [10] M. Gavrilidou, P. Labropoulou, S. Piperidis, V. Giouli, N. Calzolari, M. Monachini, C. Soria, and K. Choukri, “Language Resources Production Models: the Case of the INTERA Multilingual Corpus and Terminology,” Proc. Fifth International Conference on Language Resources and Evaluation ...

  • Adaptive neuro-fuzzy prediction of operation of the bucket wheel drive based on wear of cutting elements

    Filip Miletić, Predrag D. Jovančić, Milos Milovančević, Dragan Ignjatović (2020)
    The capacity of the rotor excavator depends largely on the operation of the subsystem for digging. There is a great contribution to the correct and sharp teeth when the capacity is the highest. In the function of time, the teeth become clogged due to abrasive wear, or changes in their geometric shape. To analyze the bucket wheel drive in depend on wear of the cutting elements in this study adaptive neuro fuzzy inference system (ANFIS) approach was implemented. ANFIS ...
    Pogon rotornog točka, habanje, rezni elementi, ANFIS

  • Analysis of the exhaust emissions inventory from auxiliary mining machines

    Stevan Đenadić, Aleksandar Mirković, Jovana Mitrović, Filip Miletić, Predrag Jovančić, Dragan Ignjatović (2023)
    Open-pit coal mines are equipped with a large number of mining machines and vehicles with diesel engines. Due to common daily operation of these machines and vehicles large amounts of exhaust gases which contain numerous pollutants are emitted into the atmosphere. The demand to reduce air pollution induced the activities in developed countries to map and calculate all gases emitted by industries to formulate and select adequate preventive activities. In collaboration with machine manufacturers, emission standards for off-road machines ...
    emissions, mining, auxiliary machines

  • Non-Detonating Chemical Mixture for Non-Invasive Methods of Rock Breaking

    Lazar Kričak, Milanka Negovanović, Nikola Simić, Stefan Milanović (2024)
    Within the Innovation developed several different non-detonating chemical mixtures for non-invasive methods of rock breaking. Laboratory and polygon tests gave the satisfactory results and knowledge enough to start the practical experiments in the field. The basis of this innovation is a theoretical assumption that certain chemical mixtures release a large quantity of gases during combustion. If these gases are found in the enclosed space a growing pressure on the walls of the chamber in which combustion takes place will ...
    non-detonating, chemical mixture, rock breaking, borehole pressure

  • Dehydroicetexanes in sediments and crude oils: Possible markers for Cupressoideae

    Hans Peter Nytoft, Geir Kildahl-Andersen, Sofie Lindström, Frode Rise, Achim Bechtel, Danica Mitrović, Nataša Đoković, Dragana Životić, Ksenija A. Stojanović (2019)
    Two previously unidentified dehydroabietane isomers were isolated from Miocene Serbian lignite and Rhaetian (Late Triassic) coaly mudstones from South Sweden and characterized using NMRspectroscopy as cis- and trans-dehydroicetexane. Both have a 9(10?20)-abeo-abietane or icetexane skeleton, consisting of a 6-7-6 tricyclic framework with seven carbons in ring B instead of the usual six in common diterpanes of the abietane-type. Dehydroicetexanes can be detected using GC-MS-MS in m/z 270?146 chromatograms without interference from dehydroabietane or other isomers. Dehydroicetexanes are often abundant ...
    Geochemistry and Petrology

  • 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
    ... 1990); Miroslav 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 ...
    ... (2010): 297. 3. Kržaк, 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 ...

  • 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

  • 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
    ... development [2]. Regular monitoring of air, water, and soil quality enables timely response and prevention of hazardous events [3]. Alignment of production and consumption with the available natural resources plays a significant role in creating the basis for harmonious relations between the energy sector ...
    ... establishing the procedures of performing work activities while reducing environmental pollution and complying with the European standards (n35), production of documentation for the implementation of regular analysis procedures for the impact of work activities and timely risk identification (n36), and ...
    ... establishing the procedures of performing work activities while reducing environmental pollution and complying with the European standards (n35), production of documentation for the implementation of regular analysis procedures for the impact of work activities and timely risk identification (n36), ...

  • Developing Termbases for Expert Terminology under the TBX Standard

    https://dr.rgf.bg.ac.rs/s/repo/item-set/522 (2014)
    ... reference resource for mining terminology in Serbian. RudOnto is managed by a terminological information system, and one of its intended uses is the production of derived terminological resources in sub-fields of mining engineering, such as planning and management of exploitation, mine safety or mining equipment ...
    ... some areas, such as mining and geology, which motivated the language technol- ogy team at FMG to build such a dictionary for these areas. For its production and management we used an integrated and easily adjustable tool for language resources, LeXimir, also developed at FMG within the Human Language ...
    ... can handle several lan- guage resources simultaneously, thus enhancing the potential of each particular resource in realizing a task, in this case production of morphological dictionaries [13]. Some examples from the simple word DELAS dictionary of terms related to mining and geology, represented by their ...

  • An aproach to Implementation of blended learning in a university setting

    Ivan Obradović, Ranka Stanković, Olivera Kitanović, Jelena Prodanović (2011)
    ... The courses supported by the portal involve a teaching staff of 143 professors and teaching assistants. The development environment for the production of the portal was based on the PHP scripting language, and the portal database was implemented on MS SQL Server 2008. For each of the several ...

  • 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
    ... Undergr. Space Technol. 2013, 37, 165–179. [CrossRef] 13. EN 206-1. European Standardization Committee, Concrete—Part 1: Specification, Performance, Production and Conformity, EN 206-1; NSAI: Northwood, Dublin, Ireland, 2002. 14. California Department of Transportation; Materials Engineering and Testing ...