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Упит dcterms_subject_txt:grain size distribution

508 items

  • Анализа рада дисконтинуалног система на основу симулације утовара и транспорта целог површинског копа

    Милош Јовановић (2024)
    У овом раду анализира се рад дисконтинуалног система утовара и транспорта на површинским коповима користећи софтверски пакет Haulsim. Циљ истраживања је побољшање ефикасности процеса транспорта и оптимизација коришћења ресурса. Симулација је спроведена за различите сценарије утовара и транспорта, укључујући варијације у броју возила, њиховој брзини, капацитету, као и рутама транспорта. Добијени резултати су показали значајне могућности за унапређење постојећих процедура и смањење трошкова. Дисконтинуални системи су сложени и захтевају пажљиву анализу како би се постигла максимална продуктивност и смањење ...
    анализа, симулација, оптимизација, ефикасност, Haulsim
    ... TpaHcCnoprTa IIeJIOr IIOBpIHIHHCKOT KOTa ff-. Edit Configuration - Loading Units - Komatsu - PC 3000-1 – |} x Operational Data | Costing Data - Distribution Data Bucket Capacity/Payload Full Truck Full Bucket a . Defined Capacity 1600|m* _ SAE Rated Capacity i il ' Rated Suspended Load t Last ...
    ... TpaHcCnoprTa IIeJIOr IIOBpIHIHHCKOT KOTa f. Edit Configuration - Load & Haul Units - Belaz - 75135 _ |a| x Operational Data | Costing Data — Distribution Data 'Configuration Tray -- Operation Spot Time -Load |0.40 min 2400s Dump Time 0.20 | min | 12.00 | s [v/} Use Variability s Spot Time ...

  • Upravljanje proizvodnjom nafte – novi alat na bazi fazi logike

    Мирослав Црногорац, Душан Даниловић, Лола Томић (2020)
    ... beer: the role of yeast. Intl. Microbiol. 2011 14, 61-71 [6] Sauerbrei S., Hass E.C., Plath P.J. The Apollonian decay of beer foam bubble size distribution and the lattices of young diagrams and their correlated mixing functions. Disc. Dyn. in Nat. and Soc., 2006, 1-35 [7] Michael J.L., Ashton ...
    ... not advanced. 4. WORLDWIDE WATER USAGE Many variables determine rates of water use worldwide: extent and type of socioeconomic growth, population size, climatic circumstances, and a region's physical nature. Different assessments of worldwide water use have been made, typically by combining regional ...
    ... software. Accent of study is placed on description of topology optimization of support, in other words, mass reduction with equally Von Misses stress distribution taking into account type of material, permissible load capacity as well as constraints. Optimization is conducted within Topology Study module ...

  • 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
    ... (2017) 1-24 12 gauging stations is in essence the discharge of the Vodenička, which amounts to 0.56 m 3 /s. Expressed in terms of catchment size: - the gauging station at Izatovac covers a catchment area of 156 km 2 , - the gauging station at Braćevci covers a catchment area of 227 km ...

  • FrameNet Lexical Database: Presenting a Few Frames Within the Risk Domain

    Aleksandra Marković, Ranka Stanković, Natalija Tomić, Olivera Kitanović (2021)
    U radu se daje kratak prikaz teorije semantike okvira, na kojoj je zasnovana leksička baza Frejmnet. Predstavljena je koncepcija ove mreže, kao i mogućnosti njene primene. Predstavljena je i leksička analiza koja se primenjuje u projektu izrade Frejmneta i ukazano na razlike između analize zasnovane na okviru u odnosu na analizu zasnovanu na reči. Zatim je prikazano nekoliko povezanih okvira koje prizivaju reči iz domena rizika. U radu je predstavljena i platforma NLTК pomoću koje se mogu koristiti ...
    Srpski jezik, semantika okvira, FrameNet, scenario rizika, rudarski korpus, obrada prirodnog jezika
    ... analyzed the definition of the verb to risk in ten general-use dictio- naries of English, Fillmore and Atkins concluded that even dictionaries of a similar size and purpose do not feature the basic meanings of the verb, which are part of basic vocabulary (Fillmore and S. Atkins 1994, 353). 9. There are some ...

  • Bilingual lexical extraction based on word alignment for improving corpus search

    Jelena Andonovski, Branislava Šandrih, Olivera Kitanović (2019)
    Library and Information Sciences,Computer Science Applications

  • Using Lexical Resources for Irony and Sarcasm Classification

    Miljana Mladenović, Cvetana Krstev, Jelena Mitrović, Ranka Stanković (2017)
    The paper presents a language dependent model for classification of statements into ironic and non-ironic. The model uses various language resources: morphological dictionaries, sentiment lexicon, lexicon of markers and a WordNet based ontology. This approach uses various features: antonymous pairs obtained using the reasoning rules over the Serbian WordNet ontology (R), antonymous pairs in which one member has positive sentiment polarity (PPR), polarity of positive sentiment words (PSP), ordered sequence of sentiment tags (OSA), Part-of-Speech tags of words (POS) ...
    ... dataset (319 ironic and 1,413 non- ironic tweets), comparison with other similar irony classifiers [27] confirms that when using an imbalanced distribution, the accuracy is higher relative to precision, recall and F1. Our results also show that semantic knowledge in the WordNet ontology can improve ...

  • 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
    ... MWE pairs derived from bilingual dictionaries and morphological dictionaries. We will apply the same approach to other domains – min- ing, electro-distribution and management – since aligned domain corpora have already been prepared. At the same time the presented system will be improved with the user friendly ...

  • Determination of the groundwater-leakage mechanism (binary mixing) in a karstic dam site using thermometry and isotope approach (HPP Visegrad, Bosnia, and Herzegovina)

    Ljiljana Vasić, Saša Milanović, Anita Puskás-Preszner, Laszlo Palcsu (2020)
    Earth-Surface Processes,Geology, Pollution, Soil Science, Water Science and Technology, Environmental Chemistry, Global and Planetary Change

  • Upper Miocene depositional environments of the Kikinda-Mokrin High (Serbia)

    Saša Ivanišević, Dejan Radivojević (2018)
    Exploration for oil and gas in mature areas, such as the Pannonian Basin, can benefit from reexamination of old data using more advanced modern workflows that focus on the temporal and spatial aspects of sediment deposition. Specifically, we apply a new environment of deposition model that interprets the Upper Miocene- Pliocene sediments as being deposited in a rapidly filling basin characterized by quick shelf edge progradation from the northwest toward the southeast. Reconstruction of this shelf edge trajectory reveals ...
    naftna geologija, depozicione sredine, formacije, Panonski basen

  • Одређивање оптималних параметара цевовода за двофазни проток

    Николина Ћурчић (2024)
    Eфикасно управљање протоком флуида је кључно за оптимизацију перформанси система и обезбеђивање оперативне сигурности. Двофазни ток, који подразумева истовремено присуство течне и гасне фазе унутар цевовода и измењивача топлоте, представља један од најсложенијих аспеката динамике флуида. Овај феномен намеће јединствене изазове који захтевају дубоко разумевање и прецизно планирање. Ефикасно управљање двофазним током није само кључно за одржавање ефикасности система, већ је и неопходно за спречавање потенцијалних проблема као што су повећана ерозија, неочекиване флуктуације притиска и ризици по безбедност. У ...
    евовод, оптимизација, двофазни проток, параметри цевовода, трошкови
    ... H Ppae OJ BHCOKHM TIPHTHCKOM y3 MoMoh KOMIIpeCOpcKHXx cTaHHma. FEoaMa yripaBJbajy crteruijam3oBaHe KOMIaHHje. 4. JucrpuoyrHaBHu HeBOBoOJ I (Distribution Pipelines) – MaPH IIeBOBOJIH KOJH J\OBOJIe eHepreHTe JIO KpajbbHx HoTpomraua, Kao ITTO Cy oMahuHHcrTBa H ripe,ny3eha. HouMa ynpanBJbajy KoOMyHalnHa ...

  • Strategic Environmental Assessment in the Application of Preventive Protection for Wind Farm Noise—Case Study: Maestrale Ring Wind Farm

    Boško D. Josimović, Aleksandar Cvjetić, Božidar Manić (2021)
    Determining the spatial position of wind turbines is the initial and most important phase in the development of a wind farm project. In this sensitive phase, all potential problems that may arise in the later stages of project development should be prevented by means of spatial and urban planning instruments. This makes it possible to achieve maximum use of the potential of wind in a particular space and, thus, fulfil the technical and economic requirements of the project while ...
    Energija,energetski inženjering i elektroenergetska tehnologija,obnovljivi izvori energije, održivost i životna sredina,električni i elektronski inženjering,kontrola i optimizacija,inženjering
    ... planned Maestrale Ring wind farm, resulted in the SEA being formed with 4 groups of criteria, with a total of 11 individual criteria, relating to: size (intensity) of impact; spatial dimensions (spatial dispersion) of impact; the likelihood that some of the estimated impacts will occur in reality; ...

  • Utilizing sewage wastewater heat in district heating systems in Serbia: effects on sustainability

    Marija Živković, Dejan Ivezić (2021)
    Transformation of the heating sector is recognized as being essential for ensuring reliable and afordable energy services provided with reduced consumption of energy sources and diminished impact on the environment and less import dependency. The possibility of utilizing energy sources that otherwise would be wasted needs to be considered and treated as a big advantage of district heating systems. Despite many advantages, sewage wastewater heat is still a mostly unused resource at the global level and a totally unused ...
    рекуперација топлоте из отпадних вода, систем даљинског грејања, топлотне пумпе, енергетске уштеде, емисија угљендиоксида, енергетска безбедност, Србија
    ... different DH systems. Table 2 presents values for the biggest systems in Serbia. Fig. 3 Overview of district heating systems in Serbia, by fuel and by size M. Živković, D. Ivezić 1 3 It can be seen that DH systems with the lowest primary energy factor and carbon dioxide emission coefficient have ...

  • Efikasnost različitih tipova glina Srbije za adsorpciju metilen plavog

    Maja D. Milošević (2016-12-09)
    Adsorpciona efikasnost različitih uzoraka glina sa lokaliteta Srbije određenaje njihovim tretiranjem različitim koncentracijama rastvora metilen plavog (MP).Detaljna mineraloška karakterizacija ispitivanih glina i rezultati njihove interakcijesa rastvorima MP dobijeni su primenom optičkih, rendgenskih, hemijskih, DTA ispektroskopskih metoda.Na osnovu formiranja MP agregata u izmenljivim pozicijama i površiničestica gline, razlikuju se dva tipa glinovitih minerala: visoko naelektrisani(smektiti) i nisko naelektrisani (kaoliniti). Dimeri se stvaraju na naelektrisanimpovršinama, a granica njihovog razvoja omogućuje determinaciju mineralne vrste.Molekuli MP stoje pod uglom od 21.5o kada se ...
    minerali glina, metilen plavo, kristali metilen plavog, difuznarefleksija, adsorpcija, flokulacija, naelektrisanje slojeva
    ... Color is changing from saturated blue to green (smectite) or it remains blue, followed by changes in saturation (kaolinite). By adjusting grain size, zeta potential and pH of the suspension it is evident that different types of clays are efficient in adsorption of larger quantities of MB molecules ...
    ... methylene blue. Journal of chemical and engineering data 12: 4 Borkovec M., Wu Q., Degovics G., Laggner P. and Sticher H. 1993. Surface area and size distributions of soil particles. Colloids and Surfaces A: Physicochemical and Engineering Aspects 73: 65 - 76 Bradley D.F. and Wolf M.K. 1959. ...

  • Novi model za postizanje optimalne proizvodnje na naftnom polju Amal

    Elnori Elmabrouk Ali Elhaddad (2015-04-16)
    Doktorskom disertacijom analizirani su i proučavani problemi proizvodnje nafte iprimenjene metode za njihovo rešavanje na naftnom polju Amal. Ukratko jeprikazana proizvodnje nafte u Libiji, njene karakteristike i rezerve, da bi se videoznačaj ovog naftnog polja.Utvrđeno je da su na naftnom polju Amal ključni problemi koji prate procesproizvodnje taloženje parafina, pojava slojnog peska, neefikasan rad gasliftsistema, neefikasna desalinizacija nafte i ekološki problemi. Proizvodniproblemi, pojedinačno i više njih zajedno, na nekim bušotinama uzrokovali susmanjenje proizvodnje nafte od 40 do 75%. Zbog ...
    nafta, proizvodnja, optimizacija, Amal, Libija
    ... Petroleum production engineering, Elsevier Science & Technology Books, 288. Guo T., Zhang S., Wang L., Sui W., Wen H. (2012) Optimization of proppant size for frac pack completion using a new equipment, Journal of Petroleum Science and Engineering, Volumes 96–97, 1-9. Gutierrez F., Hallquist A., Shippen ...
    ... system, it has proposed the use of gravel pack method. To achieve more efficient oil production, it has defined a model for adequate distribution of well injection gas, at the level of gathering stations or compressor stations. For the purpose of oil production optimization, it has applied ...

  • Novi model za postizanje optimalne proizvodnje na naftnom polju Amal

    Elnori Elmabrouk Ali Elhaddad (2015-04-16)
    Doktorskom disertacijom analizirani su i proučavani problemi proizvodnje nafte iprimenjene metode za njihovo rešavanje na naftnom polju Amal. Ukratko jeprikazana proizvodnje nafte u Libiji, njene karakteristike i rezerve, da bi se videoznačaj ovog naftnog polja.Utvrđeno je da su na naftnom polju Amal ključni problemi koji prate procesproizvodnje taloženje parafina, pojava slojnog peska, neefikasan rad gasliftsistema, neefikasna desalinizacija nafte i ekološki problemi. Proizvodniproblemi, pojedinačno i više njih zajedno, na nekim bušotinama uzrokovali susmanjenje proizvodnje nafte od 40 do 75%. Zbog ...
    nafta, proizvodnja, optimizacija, Amal, Libija
    ... Petroleum production engineering, Elsevier Science & Technology Books, 288. Guo T., Zhang S., Wang L., Sui W., Wen H. (2012) Optimization of proppant size for frac pack completion using a new equipment, Journal of Petroleum Science and Engineering, Volumes 96–97, 1-9. Gutierrez F., Hallquist A., Shippen ...
    ... system, it has proposed the use of gravel pack method. To achieve more efficient oil production, it has defined a model for adequate distribution of well injection gas, at the level of gathering stations or compressor stations. For the purpose of oil production optimization, it has applied ...

  • Mikroelementi u uljnim šejlovima Aleksinca i njihov uticaj na životnu sredinu

    Nikoleta Aleksić (2021)
    ... dr Milena Dalmacija“, 2021. Va-02 [13] Bi, X.Z., Liang, S., Li, X. (2013). A novel in situ method for sampling urban soil dust: Particle size distribution, trace metal concentrations, and stable lead isotopes. Environmental Pollution, 177, 48-57. [14] Martuzevicius, Kliucininkas L., Prasauskas ...
    ... Technology 38, 5458–5464. 16. Zimmerman, J.R., Werner, D., Ghosh, U., Millward, R.N., Bridges, T.S., Luthy, R.G., 2005. Effects of dose and particle size on activated carbon treatment to sequester polychlorinated biphenyls and polycyclic aromatic hydrocarbons in marine sediments. Environmental Toxicology ...
    ... 159, 3560-357. [23] Dzierzanowski, K., Popek, R., Gawronska, H., Sæbø, A., Gawronski, S.W. (2011). Deposition of particulate matter of different size fractions on leaf surfaces and in waxes of urban forest species. International Journal of Phytoremediation, 13, 1037–1046. [24] Bargagli, R. (1998) ...

  • Nelinearno dinamičko modelovanje potresa izazvanih promenom naponskog stanja pri izradi horizontalnih podzemnih prostorija

    Srđan D. Kostić (2013-11-04)
    U ovoj disertaciji, cilj istraživanja bio je određivanje dinamičkih svojstava potresaizazvanih promenom naponskog stanja pri izradi horizontalnih podzemnih prostorija.Analiza potresa izvedena je sa dva aspekta – u prvom delu istraživanja izučavane suvremenske serije oscilovanja tla za vreme potresa, a u drugom delu vršena je analizastabilnosti fenomenološkog Baridž-Knopof modela bloka sa oprugom. Vremenske serijeoscilovanja tla proučavane su primenom postupka analize surogat podataka, kao ikorišćenjem metoda analize nelinearnih vremenskih serija (primena teoreme orazvijanju skalarne vremenske serije). Analiza vremenskih serija izvedena je ...
    potres, naponsko stanje, podzemne prostorije, bifurkacije, vremenskaserija, deterministički haos, stohastičnost, perturbacije, vremensko kašnjenje, jačina trenja
    ... , Australia (http://www.portergeo.com.au/) 145.Pradhan, S., Chakrabarti, B., Ray, P., Dey, M K. 2003. Magnitude distribution of earthquake: Two fractal contact area distribution, Physica Scripta T 106, 77, 1-8. 146.Pradhan, S., Hansen, A., Chakrabarti, B.K. 2010. Failure Processes in Elastic ...
    ... Hedley, D.G.F. 1992. Rockburst handbook for Ontario hardrock mines. CANMET Special Report SP92-1E, 305 p. 70. Hemmer, P., Hansen, A. 1992. The Distribution of Simultaneous Fiber Failures in Fiber Bundles, Journal of Applied Mechanics 59, 909-914. 71. Hergarten, S., Neugebauer, H.J. 2000. Self-organized ...
    ... 423-453. Hedley, D.G.F. 1992. Rockburst handbook for Ontario hardrock mines. CANMET Special Report SP92-1E, 305 p. Hemmer, P., Hansen, A. 1992. The Distribution of Simultaneous Fiber Failures in Fiber Bundles, Journal of Applied Mechanics 59, 909-914. Hergarten, S., Neugebauer, H.J. 2000. Self-organized ...

  • Nelinearno dinamičko modelovanje potresa izazvanih promenom naponskog stanja pri izradi horizontalnih podzemnih prostorija

    Srđan D. Kostić (2013-11-04)
    U ovoj disertaciji, cilj istraživanja bio je određivanje dinamičkih svojstava potresaizazvanih promenom naponskog stanja pri izradi horizontalnih podzemnih prostorija.Analiza potresa izvedena je sa dva aspekta – u prvom delu istraživanja izučavane suvremenske serije oscilovanja tla za vreme potresa, a u drugom delu vršena je analizastabilnosti fenomenološkog Baridž-Knopof modela bloka sa oprugom. Vremenske serijeoscilovanja tla proučavane su primenom postupka analize surogat podataka, kao ikorišćenjem metoda analize nelinearnih vremenskih serija (primena teoreme orazvijanju skalarne vremenske serije). Analiza vremenskih serija izvedena je ...
    potres, naponsko stanje, podzemne prostorije, bifurkacije, vremenskaserija, deterministički haos, stohastičnost, perturbacije, vremensko kašnjenje, jačina trenja
    ... , Australia (http://www.portergeo.com.au/) 145.Pradhan, S., Chakrabarti, B., Ray, P., Dey, M K. 2003. Magnitude distribution of earthquake: Two fractal contact area distribution, Physica Scripta T 106, 77, 1-8. 146.Pradhan, S., Hansen, A., Chakrabarti, B.K. 2010. Failure Processes in Elastic ...
    ... Hedley, D.G.F. 1992. Rockburst handbook for Ontario hardrock mines. CANMET Special Report SP92-1E, 305 p. 70. Hemmer, P., Hansen, A. 1992. The Distribution of Simultaneous Fiber Failures in Fiber Bundles, Journal of Applied Mechanics 59, 909-914. 71. Hergarten, S., Neugebauer, H.J. 2000. Self-organized ...
    ... 423-453. Hedley, D.G.F. 1992. Rockburst handbook for Ontario hardrock mines. CANMET Special Report SP92-1E, 305 p. Hemmer, P., Hansen, A. 1992. The Distribution of Simultaneous Fiber Failures in Fiber Bundles, Journal of Applied Mechanics 59, 909-914. Hergarten, S., Neugebauer, H.J. 2000. Self-organized ...

  • Supstitucione reakcije Pd(II) kompleksa sa biološki važnim biomolekulima

    Aleksandar M. Mijatović, Jovana Bogojeski (2017)
    Kompleksi Pd(II), supstitucione reakcije

  • Determining the Availability of Continuous Systems at Open Pits Applying Fuzzy Logic

    Miljan Gomilanović, Miloš Tanasijević, Saša Stepanović (2022)
    This work presents a model for determining the availability of continuous systems at open pits by applying fuzzy logic and fuzzy inference systems. The applied model was formed by the synthesis of independent partial indicators of availability. The model is based on an expert system for assessing the availability of continuous mining systems. The availability of the system, as a complex state parameter, is decomposed into the partial indicators, reliability, and convenience of maintenance, and the fuzzy compositions, used ...
    системи, континуални систем експоатације, површински коп, рударство, расположивост, фази логика, max–min композиција, min–max композиција