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Упит dcterms_subject_txt:fluid loss control

348 items

  • Late Triassic radiolarians from the Grivska formation, internal Dinarides, SW Serbia

    Nikita Bragin, Liubov Bragina, Nevenka Đerić, Nataša Gerzina-Spajić (2019)
    Paleontology, Stratigraphy, Economic Geology, Geochemistry and Petrology, Geology, Geophysics, Geotechnical Engineering and Engineering Geology
    ... surrounding rocks. Therefore it was difficult to reconstruct primary strati- graphical relationships ofthese deposits without bios- tratigraphic control. Biostratigraphy of the Grivska Formation can be based only on microfauna; any macrofossils are unknown here. SUDAR [1986, 1996) distinguished ...

  • The influence of alkyl polyglucosides (and highly ethoxylated alcohol boosters) on the phase behavior of a water/toluene/technical alkyl polyethoxylate microemulsion system

    Marija Ilic, Franz-Hubert Haegel, Vesna Pavelkic, Dragan Zlatanovic, Snezana Nikolic-Mandic, Aleksandar Lolic, Zoran Nedic (2016)
    The influence of additives (alkyl polyglucoside, Glucopon 600 CS UP and alcohol ethoxylate C18E100) on the behavior of the water/toluene/Lutensol ON 50 (technical oxoalcohol, i-C10E5) microemulsion system as a function of temperature and composition has been investigated. The phase behavior of the microemulsions was determined by vertical sections through the Gibbs phase prism (fish-like phase diagrams). Alkyl polyglucoside shifts the one phase region to lower temperatures compared with water/toluene/Lutensol ON 50 mixtures. This is contrary to the expectation, considering ...
    микроемулзија, толуен, алкил полиглукозид, оксоалкохол етоксилат, појачивач ефикасности, „fish“ дијаграми
    ... Samples were weighed into test tubes, which were immediately sealed (glass stoppers) and put into a thermostated water bath with temperature control up to 0.2 *C. In the thermostated bath, the mixtures were stirred with small magnetic stirrers to ensure complete mixing of the components at ...

  • Machine Learning and Deep Neural Network-Based Lemmatization and Morphosyntactic Tagging for Serbian

    Ranka Stanković, Branislava Šandrih, Cvetana Krstev, Miloš Utvić, Mihailo Škorić (2020)
    The training of new tagger models for Serbian is primarily motivated by the enhancement of the existing tagset with the grammatical category of a gender. The harmonization of resources that were manually annotated within different projects over a long period of time was an important task, enabled by the development of tools that support partial automation. The supporting tools take into account different taggers and tagsets. This paper focuses on TreeTagger and spaCy taggers, and the annotation schema alignment ...
    Part-of-Speech tagging, lemmatization, corpus, evaluation, Serbian, morphological dictionary
    ... government, common name Vlada,N+NProp+Hum+First // first name, proper name The additional markers enable mapping of SMD tagset to other tagsets without loss of information (e.g. such a mapping was performed for the production of Serbian MULTEXT-East resources (Krstev et al., 2004)). 2.2. Pre-annotated ...

  • 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

  • The Fuzzy–AHP Synthesis Model for Energy Security Assessment of the Serbian Natural Gas Sector

    Aleksandar R. Madžarević, Dejan D. Ivezić, Miloš L. Tanasijević, Marija A. Živković (2020)
    Natural gas is used for the production of almost 20% of total energy today. The natural gas security of the Republic of Serbia is an urgent strategic, political and security issue. Serbia is one of the most vulnerable countries in Southeast Europe, because it only has one supply route. This study is a contribution to efforts to better understand the factors affecting energy security through the implementation of a new methodology based on the fuzzy–AHP synthesis model for measuring ...
    energetska bezbednost, prirodni gas, fazi AHP, AHP višekriterijumska analiza, fazi teorija
    ... ; Mogi, G.; Kim, J.W. Decision support for prioritizing energy technologies against high oil prices: A fuzzy analytic hierarchy process approach. J. Loss Prev. Process. Indust. 2009, 22, 915–920. [CrossRef] 35. Criqui, P.; Mima, S. European climated energy security nexus: A model based scenario analysis ...
    ... Technology Management in the IT-Driven Services (PICMET), San Jose, CA, USA, 28 July–1 August 2013; pp. 2153–2162. 42. Zadeh, L.A. Information and Control. Fuzzy Sets 1965, 8, 338–353. 43. Suganthi, L.; Anand Iniyan, S.; Samuel, A. Applications of fuzzy logic in renewable energy systems—A review. Renew ...
    ... elines-for- national-greenhouse-gas-inventories/ (accessed on 15 April 2020). 76. Krishnendu, M. A Note on Limitations of FAHP. Stud. Syst. Dec. Control 2017, 88, 101–111. [CrossRef] © 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the ...

  • Late and post-collisional tectonic evolution of the Adria-Europe suture in the Vardar Zone

    Emő Márton, Marinko Toljić, Vesna Cvetkov (2022)
    The Vardar Zone is a product of the Triassic-Jurassic opening of the Neotethys, Jurassic obduction, Late Cretaceous/Paleogene consumption of the oceanic crust and continental collision. During the last process, the Eastern Vardar Zone was thrust over the Central and eventually both onto the Western Vardar Zone. The present paleomagnetic and structural study provided new results from the first two zones in the Belgrade area. The younger set of data, together with published ones from the third zone, provide firm ...
    Adria–Europe suture, Vardar Zone, Paleomagnetism, Thrusting, Vertical axis rotation

  • Fuzzy Model for Risk Assessment of Machinery Failures

    Dejan V. Petrović, Miloš Tanasijević, Saša Stojadinović, Jelena Ivaz, Pavle Stojković (2020)
    The main goal of this research was the development of an algorithm for the implementation of negative risk parameters in a synthesis model for a risk level assessment for a specific machine used in the mining industry. Fuzzy sets and fuzzy logic theory, in combination with statistical methods, were applied to analyze the time picture state of the observed machine. Fuzzy logic is presented through fuzzy proposition and a fuzzy composition module. Using these tools, the symmetric position of the ...
    fazi teorija, rizik, otkaz rudarskih mašina
    ... method for process equipment failure risk assessment. J. Loss Prev. Process Ind. 2019, 62, 103953. [CrossRef] 13. Jamshidi, A.; Yazdani-Chamzini, A.; Yakhchali, S.H. Developing a new fuzzy inference system for pipeline risk assessment. J. Loss Prev. Process Ind. 2013, 26, 197–208. [CrossRef] Symmetry ...

  • 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 ...

  • Примена CNC машина при обради мермера

    Ненад Остојић (2024)
    Мермер је стена настала метаморфизмом седиментних карбонатних стена, најчешће кречњака или доломита. Мермер се углавном састоји од калцита,кречњака, серпентина и доломита. Његове главне компоненте су углавном калцијум карбонат, који чини више од 50 посто, и други магнезијум карбонат, калцијум оксид, манган оксид и силицијум диоксид, итд. Фазе обраде мермера су: примарно резање мермерних блокова у плоче, површинска обрада мермерних плоча, секундарно резање мермерних плоча, терцијарна обрада (ако је потребно). CNC машина је електро-механички уређај који управља алатима, користећи програмирање путем ...
    мермер, површинска експлоатација, архитектонско-грађевински камен, обрада мермера, CNC машине
    ... IyTeM pauyHapa. CNC wmammHe cy BeOMa INIpermM3Hc. CaM Ha3HB „CNC“Je cKpaheHMma 3a „PauyHapcKO HyMepMHMuKO ypaBJbaĐe“, cHTM. Compufer Numeric Control.. CNC amuHe 3a MepMep cy ayToOMaTH3OBaHec MaImuHHe 3a pe3abbe HJIH npyru oOmak oOpajne monyT rpaBHpaba. HneanHe cy 3a HpenuH3Hy MaIIHHCKy OOpa/jly ...
    ... MHHHMyM, OJUIHKy]y CC BCJIHKOM IIpermaHomihy oOpaje. CaM Ha3HB „CNC“ je ckpaheHuta 3a "PauyHapcko HyMepHuko yripaBJbabe", cHr. Computfer Numeric Control. IIpencraBJba JenHy OJL BE CTaHJapJIHe MeTOJIE a TO Cy: TeXHOJIOTHJa 3D mramama M Mojnenmaipame Qy3uje ranoxema (Fused deposition modeling FDM), ...
    ... oOpany [5]. • ugrau OymeHe TpaKe, • MarHeTHH uHTau TpaKe H • pauyHap ca npunanajyhHM HHTep(bejcoM. 82 VrpapBjbauka jemMHHIa (eHr. Machine Control Unit- MCU) mnpenncraBjba cpme CNC cucrewma. Kopucrua ce 3a: • uHTaMe KOJUIpaHHX HHCTPpyKIuja, • eKOJUIpaMbec KOJUHpaHHX HHCTPpyKIHJja, • H3BODeMe ...

  • On the compatibility of lexical resources for NooJ

    Ranka Stanković, Miloš Utvić, Duško Vitas, Cvetana Krstev, Ivan Obradović (2012)
    Lexical resources for many languages are provided for the NooJ linguistic development environment. Meta-data descriptions of morphosyntactic and semantic properties of these languages and their resources are a mandatory part of each language module. In this paper we analyze how well the meta-data actually describe resources for a chosen subset of languages and to what extent are they compatible across languages to support multilingual processing. We show that there is place for improvement in both directions.
    ... suggest the replacement of the textual form of metadata by a more formal form in XML format, with a defined schema which would enable a stricter control and tighter relation between the *.def file and the dictionary. Given that Data Categories are standardized (ISO 2009) it would be good if some ...

  • E-Connecting Balkan Languages

    Cvetana Krstev, Ranka Stanković, Duško Vitas, Svetla Koeva (2009)
    In this paper we present a versatile language processing tool that can be successfully used for many Balkan languages. This tool relies for its work on several sophisticated textual and lexical resources that were developed for most of Balkan languages. These resources are based on several de facto standards in natural language processing.
    Query expansion, e-dictionary, wordnet, proper name, aligned text
    ... two working languages by adjusting parameters in the “Preferences” manu of WS4LR. Besides, WS4LR provides further possibilities for a user to control the query formulation, since in addition to expansion it also offers a narrowing of ...

  • Medical Domain Document Classification via Extraction of Taxonomy Concepts from MeSH Ontology

    Mihailo Škorić, Mauro Dragoni (2019)
    This paper is a result of a task that was presented to attendants of Keyword Search in Big Linked Data summer school, that was organized by Vienna University of Technology, under the Keystone COST action in the summer of 2017. It presents a specific approach to the classification via creation of minimal document surrogates based on the US National medical library’s MeSH ontology, which is derived from the Medical Subject Headings thesaurus. In a series of previously classified medically ...
    document classification, MeSH, ontology, information extraction
    ... documents using identifiers Two processing procedures were applied to the documents subject to clas- sification, resulting in two test sets. The control method was to replace the identifiers with their class, a more general hierarchical designation. The ex- perimental method also considered the length ...

  • 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
    ... of forming separate fi les, it is recommended that all data be stored in one. In order to be able to individually process the traverses, and to control the data, it is necessary to separate the fi les by using a software tool during the acquisitions. Some companies whose gradiometers are spe- cialised ...

  • OntoLex Publication Made Easy: A Dataset of Verbal Aspectual Pairs for Bosnian, Croatian and Serbian

    Ranka Stanković, Maxim Ionov, Medina Bajtarević, Lorena Ninčević (2024)
    Ovaj rad predstavlja novi jezički resurs za pretraživanje i istraživanje verbalnih aspektnih parova u BCS (bosanskom, hrvatskom i srpskom), kreiran korišćenjem principa Lingvističkih Povezanih Otvorenih Podataka (LLOD). Pošto ne postoji resurs koji bi pomogao učenicima bosanskog, hrvatskog i srpskog kao stranih jezika da prepoznaju aspekt glagola ili njegove parove, kreirali smo novi resurs koji će korisnicima pružiti informacije o aspektu, kao i link ka aspektnim parovima glagola. Ovaj resurs takođe sadrži spoljne linkove ka monolingvalnim rečnicima, Wordnetu i BabelNetu. ...
    aspekt glagola, lingvistički otvoreni podaci, BCS

  • Evidence for Ladinian (Middle Triassic) platform progradation in the Gyulakeszi area, Tapolca Basin, Western Hungary: Microfacies Analysis and Biostratigraphy

    Zsolt Robert Nagy, Nevenka Đerić, Sándor Kovács, Anna Oravecz-Scheffer, Felicitász Velledits, Olga Piros, Gabor Csillag (2014)
    anizik, ladin, karbonati, litostratigrafija, biostratigrafija, konodonti, radiolarije, dijageneza
    ... and Ombrettola platforms in the Dolomites resulted from the sealing effect of the low- permeability Ladinian volcanics preventing dolomitiz- ing fluid from circulating through these units. The ab- sence of Ladinian volcanics (“\/engen”) in the succes- sions of the Balaton Highland is well known ...
    ... Anisian structural highs, which were surrounded by the Bu- chenstein basin (Maurer 2000; Emmerich et al. 2005). "There was a strong biological control on reef evolution since microbial carbonates were dominant while frame- lowing the Permian- 'Triassic biological crisis (Flagel 1982, 2002; Senow- ...
    ... paleogeographic positions where the subsi- dence rate, local and regional tectonics, sediment pro- duction, or distance form volcanic centers were control- ling the growth of these platforms (Maurer 2000). The rest of this section describes some well-known examples to illustrate this point. In ...

  • A Model for Determining the Dependability of Continuous Subsystems in Coal Mines Using the Fuzzy Logic Approach

    Nikola Stanić, Miljan Gomilanović, Petar Marković, Daniel Krzanović, Aleksandar Doderović, Saša Stepanović (2024)
    This study presents a unique model for assessing the dependability of continuous parts of combined systems in open-pit mining through the application of fuzzy logic. Continuous sub-systems as part of the combined system of coal exploitation in surface mines have the basic function of ensuring safe operation, high capacity with high reliability, and low costs. These subsystems are usually part of the thermal power plant’s coal supply system and ensure stable fuel supply. The model integrates various independent partial ...
    fuzzy logic, max-min composition, continuous part of combined system (CCS), open pit, mining, dependability

  • Model predviđanja potresa od miniranja na površinskim kopovima primenom simulacione metode Monte Karlo i fazi logike

    Milanka N. Negovanović (2015-06-30)
    Modeliranje predviđanja potresa tla od miniranja primenom fazi logike i metode MonteKarlo zasnovano je na podacima dobijenim terenskim merenjima potresa uzrokovanihminiranjem. Promenljive modela definisane su analizom parametara bušenja i miniranjaminskih serija, kao i velosigrama izmerenih potresa od miniranja. Iskorišćene suprednosti fazi logike u implementaciji mnogo većeg broja ulaznih i izlaznih veličina zamodeliranje u odnosu na postojeće empirijske modele. Na osnovu identičnih podataka,dobijen je regresioni model predviđanja potresa, da bi se izvršilo testiranje novogmodela. U cilju povećanja pouzdanosti modela predviđanja, ...
    model, predviđanje potresa, miniranje, površinski kop, Monte Karlo, fazilogika, regresiona analiza, FFT analiza, spektri odziva, pomeraj pukotina
    ... predicting ground vibration caused by rock blasting in surface, Journal of Vibration and Control 0(0) 1–16. DOI: 10.1177/1077546312437002, 2012. 24. Singh, T.N., Singh, V., An intelligent approach to predict and control ground vibration in mines, Geotechnical and Geological Engineering 23(3), 2005, 249-262 ...
    ... Man-Machine Studies, 7(1), 1975, 1-13. 122. Lee, C.-C., Fuzzy logic in control systems: fuzzy logic controller - part1, IEEE Transactions on Systems, Man, and Cybernetics, 20(2), 1990, 404-418. 123. Lee, C.-C., Fuzzy logic in control systems: fuzzy logic controller - part2, IEEE Transactions on Systems ...
    ... zaključivanja su korišćena kao kontroleri za stvaranje ulaza toplote rezervoara i otvora ventila cilindra generatora pare, za regulaciju pritiska fluida u rezervoaru i brzine rada generatora. Pošto je postrojenju bila potrebna samo klasična vrednost kao ulaz, potrebno je primeniti defazifikator ...

  • Model predviđanja potresa od miniranja na površinskim kopovima primenom simulacione metode Monte Karlo i fazi logike

    Milanka N. Negovanović (2015-06-30)
    Modeliranje predviđanja potresa tla od miniranja primenom fazi logike i metode MonteKarlo zasnovano je na podacima dobijenim terenskim merenjima potresa uzrokovanihminiranjem. Promenljive modela definisane su analizom parametara bušenja i miniranjaminskih serija, kao i velosigrama izmerenih potresa od miniranja. Iskorišćene suprednosti fazi logike u implementaciji mnogo većeg broja ulaznih i izlaznih veličina zamodeliranje u odnosu na postojeće empirijske modele. Na osnovu identičnih podataka,dobijen je regresioni model predviđanja potresa, da bi se izvršilo testiranje novogmodela. U cilju povećanja pouzdanosti modela predviđanja, ...
    model, predviđanje potresa, miniranje, površinski kop, Monte Karlo, fazilogika, regresiona analiza, FFT analiza, spektri odziva, pomeraj pukotina
    ... predicting ground vibration caused by rock blasting in surface, Journal of Vibration and Control 0(0) 1–16. DOI: 10.1177/1077546312437002, 2012. 24. Singh, T.N., Singh, V., An intelligent approach to predict and control ground vibration in mines, Geotechnical and Geological Engineering 23(3), 2005, 249-262 ...
    ... Man-Machine Studies, 7(1), 1975, 1-13. 122. Lee, C.-C., Fuzzy logic in control systems: fuzzy logic controller - part1, IEEE Transactions on Systems, Man, and Cybernetics, 20(2), 1990, 404-418. 123. Lee, C.-C., Fuzzy logic in control systems: fuzzy logic controller - part2, IEEE Transactions on Systems ...
    ... zaključivanja su korišćena kao kontroleri za stvaranje ulaza toplote rezervoara i otvora ventila cilindra generatora pare, za regulaciju pritiska fluida u rezervoaru i brzine rada generatora. Pošto je postrojenju bila potrebna samo klasična vrednost kao ulaz, potrebno je primeniti defazifikator ...

  • Centar za hidrogeologiju karsta - 15 godina nauke i struke

    urednici Saša Milanović, Ljiljana Vasić, Zoran Stevanović, Branislav Petrović (2023)
    Centar za hidrogeologiju karsta
    ... (Herzegovina, Montenegro) and for the first-time successful results were achieved in such porous media as karst. Technical applications for the control and regulation of karst aquifer through the construction of galleries, batteries of wells, and groundwater rTeservoirs (storage) represented an ...
    ... the Centre for karst hydrogeology in Serbia, several successful projects were designed and implemented in Serbia with technical applications for control and engineering regulation of karst aquifer through the 15 CKH Grupa učesnika Međunarodne IAH konferencije KARST 2005 ispred spomenika Jovanu ...
    ... Basin Management Plans Capacity Building in Woater Sector River Basin Management Plan for Sava River in B&H (Hydrogeological part) Monitoring, control, and protection of the regional water supply source “Bolje sestre” for Montenegro Coast o Tracer tests with Na-fluoresceine oh the Orah collapse ...

  • Determining the Groundwater Balance and Radius of Influence Using Hydrodynamic Modeling: the Case Study of the Groundwater Source “Šumice” (Kikinda, Serbia)

    Dušan Polomčić, Dragoljub Bajić, Jelena Zarić (2015)
    A groundwater flow model was developed to simulate groundwater extraction from the public water supply source of the City of Kikinda. The hydrodynamic model includes the municipal groundwater source of Kikinda (Šumice and the Jezero Well), but also an extended area where there are groundwater sources that provide water supply to three factories: (MSK, TM and LŽT - Kikinda). Hydrodynamic modeling, based on the numerical method of finite differences will show the groundwater balance of the sources in the ...
    Water supply, Aquifer, Flow, Groundwater regime, Numerical modeling, Particle tracking
    ... Issue 3, pp 217-229 218 Nowadays, water supply is a highly complex and significant issue in every society. It is of vital importance to control and monitor the operation of each water source. Unfortunately, there are many problems. Even when the required legislation is in place, it is sometimes ...