Претрага

Упит dcterms_subject_txt:Statistical and Nonlinear Physics

2451 items

  • An oilfield in Libya: A new model to enhance waste water disposal

    Dušan Danilović, Vesna Karović Maričić, Nori Elhaddad, Branko Leković (2016)
    нафта, лежишне воде, припрема
    ... designed with flat, removable and adjustable parallel-plate modules and non-turbulence chambers ‘‘Chimney Zones’’ for solids removal, and oil extraction has over- come abovementioned lacks.10 An efficient and cost-effective process for the preparation of waste water for treating and disposal at the Amal ...
    ... inorganic salts, organic compounds and gases, dispersed oil droplets (oil-in-water emulsion) and solid par- ticles, as well as chemical additives used in treatment and naturally occurring radioactive material. Petroleum Engineering Department, Faculty of Mining and Geology, University of Belgrade, Belgrade ...
    ... together with oil and gas gathering stations.6–8 The crude oil produced at Amal is generally of rather high quality (i.e. low specific gravity and low sulphur content). API gravity of crude oil ranges between 36 and 38�, kinematic viscosity is 0.109 mPas, paraffin content is 20% and sulfur content is ...

  • Polyhedral characteristics of the cosalite-type crystal structures

    Sabina Kovač, Predrag Dabić, Aleksandar Kremenović, Aleksandar Pačevski, Ljiljana Karanović, Marko V. Rodić, Martina Tribus (2019)
    kristalna struktura, kozalit, poliedarske karakteristike
    ... pure Pb (Pb3 and Pb4); one by pure Bi (Bi1); two by a combination of Bi and small amounts of Sb (Bi2/Sb2, Bi4/Sb3); two by Pb and Bi, and in one of these also by a small amount of Ag [Me1¼ Pb2 .. Bi5 . Ag1, Me3¼ Pb1 .. Bi3]; and finally one site, Me2 (Bi6 .. A), is partly occupied by Bi and partly split ...
    ... represented by thin lines and ‘‘in-plane’’ bonds are represented by thick lines. The black and grey lines in the octahedra and bicapped trigonal prisms represent the shorter and the opposite longer distances, respectively, while the blue thick and thin lines represent short and long Cu–S bonds, respectively ...
    ... mean radii and this can be explained by the incorporation of small amounts of Bi and Ag. Samples 7 and 4 are the richest in silver (roughly 1 apfu) and the poorest in lead (6.63 apfu in sample 4 and 6.87 apfu in sample 7). As the content of Pb at Me1 increases, the mean radius increases and the BVS ...

  • 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

  • Influence of Initial Treatment on the Survival and Recurrence in Patients With Differentiated Thyroid Microcarcinoma

    Jasna Mihailović, Ljubomir Stefanović, Ranka Stanković (2013)

  • VENTEX: An Expert System for Mine Ventilation Systems Analysis

    Ranka Stanković, Nikola Lilić, Ivan Obradović (1996)
    Analiza sistema za ventilaciju je komleksan proces, koji bazira na proračunu brojnih parametara, koji se odnose na: stanje mreže, provetrenost, stabilnost sistema, gubitke vazduha, klimatske uslove, gasno stanje, ugroženost od požara i opasne prašine. Navedeni problemi se uspešno rešavaju paketom SimVent, ali potpuno razumevanje i korišćenje dobijenih rezultata zahteva angažovanje iskusnog specijaliste iz oblasti ventilacije. Rešenje je nađeno u kreiranju ekspertnog sistema VENTEX, čija je baza znanja formalizacija ekspertskog znanja iz oblasti ventilacije rudnika. U radu je prikazana metodologija ...
    ekspertni sistem, ventilacija

  • Investigating distant effects of the Moesian promontory: Brittle tectonics along the western boundary of the Getic unit (East Serbia)

    Ana Mladenović, Milorad D. Antić, Branislav Trivić, Vladica Cvetković (2019)
    In this study, we report evidence for brittle deformation in a part of the Carpatho–Balkan orogen, which is explained in terms of effects of the rigid Moesian promontory of the European plate on fault kinematics in East Serbia. We focus on the westernmost part of the Getic Unit of the East Serbian Carpatho–Balkanides, i.e. the Gornjak–Ravanica Unit, located between two main thrusts that were repeatedly activated from Early Cretaceous to recent times. We combine a new data set on ...
    Getikum, Mezijska jedinica, Karpato-balkanski orogen, krte deformacije, Gornjačko-ravanička jedinica
    ... calculated stress tensors indicating such extreme R values were treated as implausible and inconclusive and were ignored from further considerations. 4 Results Based on the statistical analyses of measured fault sets and the calculation of the reduced stress tensors, two main tensor groups are distinguished ...
    ... significance (Sperner and Zweigel, 2010). Many authors consider that the occurrence of extreme R values (e.g. radial compression—vertical r3 and 0.75 B RB1, or radial extension—vertical r1 and 0 B RB0.25) are quite difficult to explain in nature (e.g. Ritz and Taboada 1993; Delvaux and Sperner 2003). Conse- ...
    ... the Neotethyan Ocean that existed in-between the Gondwana (Africa) and Eurasian (Europe) continental plates, and subsequent Cretaceous–Neogene collisional and post-collisional phases (Schmid et al. 2008; Cvetković et al. 2016; and references therein). The East Serbian Carpatho–Balkanides consist ...

  • Mio-Pliocene Geodynamics and its Stratigraphic Consequences in the Area of Avala Mt. (Belgrade, Serbia)

    Ljupko Rundić, Meri Ganić, Slobodan Knežević, Dejan Radivojević (2017)

  • Development of integrated fuzzy model for mine management optimization

    Miodrag Čelebić, Sanja Bajić, Dragoljub Bajić, Dejan Stevanović, Duško Torbica, Vladimir Malbašić (2023)
    fuzzy logika, višekriterijumsko odlučivanje, ocenjivanje eksperata
    ... Ko – safe and healthy work environment, Ky - extractable ore reserves, and K+ — coefficient of ore de- pletion. The considered mining: technology options, based on the natural setting, included: Ai — block caving, Ao — sublevel caving, A3 — cutting and filling, and Aa – room and pillar mining ...
    ... inherent uncertainties, vagueness, and inaccuracies. As a result, subjective evaluation by engineers and expert experience have become increas- ingly important. Given that the natural language used by miners and geologists is most suited for relaying: knowledge and expressing; opinions, the paper ...
    ... underlying: and overlying, limestones. The underlying limestones are solid homo- geneous rocks, with numerous fractures and a number of fault zones. Expert experience suggested potential problems for certain types of mining. operations. Additionally, also based on experience and the physical and mechanical ...

  • Production of morphological dictionaries of multi-word units using a multipurpose tool

    Ranka Stanković, Ivan Obradović, Cvetana Krstev, Duško Vitas (2011)
    The development of a comprehensive morphological dictionary of multi-word units for Serbian is a very demanding task, due to the complexity of Serbian morphology. Manual production of such a dictionary proved to be extremely time-consuming. In this paper we present a procedure that automatically produces dictionary lemmas for a given list of multi-word units. To accomplish this task the procedure relies on data in e-dictionaries of Serbian simple words, which are already well developed. We also offer an evaluation ...
    electronic dictionary, Serbian, morphology, inflection, multi-word units, noun phrases, query expansion

  • Advancing Sentiment Analysis in Serbian Literature: A Zero and Few-Shot Learning Approach Using the Mistral Model

    Milica Ikonić Nešić, Saša Petalinkar, Mihailo Škorić, Ranka Stanković, Biljana Rujević (2024)
    Ova studija predstavlja analizu sentimenta srpskih starih romana iz perioda 1840-1920, koristeći veliki jezički model (LLM) Mistral za tehniku učenja sa zasnovani na takozvanim "zero" i "few-shot" pokušajima. Glavni pristup uvodi inovacije osmišljavanjem istraživačkih upita (promptova) uključuju tekst sa uputstvom za klasifikaciju bez primera i na osnovu nekoliko primera, omogućavajući jezičkom modelu da klasifikuje osećanja u pozitivne, negativne ili objektivne kategorije. Ova metodologija ima za cilj da pojednostavi analizu osećanja ograničavanjem odgovora, čime se povećava preciznost ...
    zero-shot, few-shot, sentiment, Serbian, Mistral model

  • Geochemistry of neutral mine drainage at sulfide deposits ‒ example of the „Grot“ Pb-Zn mine, South-Eastern Serbia

    Snežana Kretić, Jana Štrbački, Nebojša Atanacković (2024)
    U ovom radu proučavan je hemijski sastav voda iz rudnika i izdvojeni su hidro-geohemijski faktori koji utiču na njegovo formiranje. Sakupljeno je 11 uzoraka vode sa 6 lokacija na području Krive Feje, kako bi se utvrdio njihov hemijski sastav. Analizom podataka utvrđeno je da su vode sa ovog područja visokog kvaliteta, HCO3--SO42--Ca2+ i SO42--Ca2+ tipa, sa neutralnom pH vrednošću. Koncentracije metala u ovim vodama (cinka, olova, barijuma, bakra i hroma) generalno su niske i većina uzoraka voda ispunjava kriterijume ...
    podzemne vode, kisele rudničke vode, hidrogeohemijski faktori, metali, PHREEQC modeliranje, indeks saturacije

  • Middle Triassic stepwise deepening and stratigraphic condensation associated with Illyrian volcanism in the Durmitor Mountain, Montenegro

    Milica Mrdak, Martin Đaković, Hans-Jürgen Gawlick, Nevenka Đerić, Ioan I. Bucur, Milan Sudar, Mileva Milić, Damjan Čađenović (2024)
    anizijski kat, amoniti, konodonti, Dinaridi, Neotetis
    ... ic gap between the Wetterstein and Dachstein Carbonate platforms is characterized by block tilting, emersion and deep erosion (Vlahović et al. 2005 and references therein), and in some cases, by the formation of bauxites (Marković 2002; Pajović et al. 2017 and references therein). However, ...
    ... recrystallized radiolarians and few broken “filaments” (Julian 1/Julian 2 boundary interval), and an ammonoid shell. Sample MM 388. Width of the photograph: 0.5 cm. 2 — Turbiditic and bioturbated radiolarian- and *filament” wacke- to packstone with micrite clasts and diffuse silicification (Juli ...
    ... table (Fig. 2), and Middle Carnian with s “Middle Carnian” in text and figures. Methods and samples section in northern Montenegro (Fig. 3) near iješevina (locality Donja Tikova) belongs to the East Bosnian-Durmitor megaunit ofthe Dinarides (Fig. 1). Twelve important and indicative samples ...

  • An Integrated Environment for Management and Exploitation of Linguistic Resources

    Ranka Stanković, Ivan Obradović (2009)

  • English for Geology Students. 2

    Lidija Beko (2023)
    Engleski jezik
    ... of clarity and coherence as a way in which they wish to teach the subject of English language and geology. Six thematic units: 1. Landslides 2. Metamorphic rocks 3. Mineral deposits 4. Hydrological cycle and groundwater 5. Surface water and glaciers 6. Geophysics, seismology and prospecting ...
    ... Faculty of Mining and Geology who have provided Foreword me with valuable assistance, relevant literature and insights, and who have pointed out specific geological terms and translations of those terms in order for me to use them correctly. My reviewers, prof. dr Juliana Vučo and prof. dr Dragoslava ...
    ... conscientiousness and kindness selflessly helped me in all segments of making the textbooks and to whom 1 owe a lot of knowledge aboutlanguage, art and culture.1 use this opportunity to extend a big and heartfelt “thank you” to him. Wulfenite > 10 . Part3 NMetals and gemstones All three ...

  • Evaluation And Perspectives Of Underground Coal Mines In Serbia

    Vladimir Milisavljević, Milena Lekić, Ivica Ristović, Vojin Čokorilo, Aleksandar Cvjetić (2017)

  • 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

  • Pseudo-linear combination of fuzzy metrics

    Nebojsa M. Ralević, Bratislav D. Iričanin, Dejan Ćebić (2024)
    fazi metrike, filtriranje slika
    ... Michalek, Fuzzy metrics and statistical metric spaces, Kybernetika 11 (1975), 326-334. 9. N.D. Narvekar, L.J. Karam, 4An mproved no-reference sharpness metric based on the proba- bility of blur detection, in: Conf. Proc. 2009 International Workshop on Video Processing and Quality Metrics or Consumer ...
    ... where 6 and 0 are fuzzy metrics with respect to a norm Ni. 44 RALEVIĆ, IRIČANIN, AND ĆEBIĆ IF Nı and N-» are continuous triangular norm and conorm, respectively, where the superdistributivity of No according to Ni hold and 6, 0 are fuzzy T-metrics with respect to the strict -norm Ni and a; c |0 ...
    ... filtered using: a median filter, 10% salt and pepper Taking the values of the parameters p = 2 and q = 2, and by varying the value t c |0.1,4.0] (with step 0.1) and K c |125,1500) (with step 125), in metrics and for filtered image contaminated with 10% salt and pepper noise, the best values of metric ...

  • Fuzzy expert analysis of the severity of mining machinery failure

    Dejan V. Petrović, Miloš Tanasijević, Saša Stojadinović, Jelena Ivaz, Pavle Stojković (2020)
    Mining machinery failure is almost an everyday occurrence. Usually the failures bare certain consequences, which require additional financial costs to repair and restore the system to its operational state. The consequences are viewed through negative and damaging effects a failure has on the machine, health and safety of the employees, work environment, and on the environment. The removal of the consequences of the failure requires additional financial investment, which has a negative impact on the company’s business. In order ...
    Severity of failure, Severity of failure assessment, Mining machinery, Fuzzy sets, Fuzzy logic
    ... can be classified in two categories: the first includes maintenance and mining machin- ery functioning, and the second includes reliability assessment analysis. The statistical analyses of the existing data on the time of a failure and the duration of the mining machinery failure, depending on the maintenance ...
    ... level of severity of a failure is determined by applying fuzzy logic conclusion and min–max composition. The analyzed severity indicators, based on which the estimate is obtained, are acquired by combining statistical data and expert estimation. Model developed for this paper is established on the example ...
    ... obtained from the field data. In addition to the statistical data, the analysis based on the data gathered from the employees’ experience can be found in literature. However, there is a problem with quantification of such data. The data on detectability and severity of the failure is obtained mostly from ...

  • Demise of the Wetterstein Carbonate Platform and onset of the Dachstein Carbonate Platform recorded in deep-water successions of the East Bosnian-Durmitor megaunit (Pliješevina, northern Montenegro, Dinarides)

    Milica Mrdak, Eva Wagerer, Milan Sudar, Nevenka Djerić, Martin Đaković, Hans-Jürgen Gawlick (2024)
    Triassic, Carnica event, clay mineralogy, conodont biostratigraphy, Neo-Tethys

  • Petrographical and organic geochemical study of the subbituminous coal from the Dubrava field, Aleksinac basin (Serbia)

    Željana Sekulić, Ksenija Stojanović, Achim Bechtel, Reinhard Sachsenhofer, Miomir Petrović, Ivan Kojić, Dragana Životić (2019)