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Упит dcterms_subject_txt:In Pit Crushing and Conveying

2365 items

  • Electronic Dictionaries - from File System to lemon Based Lexical Database

    Ranka Stanković, Cvetana Krstev, Biljana Lazić, Mihailo Škorić (2018)
    In this paper we discuss some well-known morphological descriptions used in various projects and applications (most notably MULTEXT-East and Unitex) and illustrate the encountered problems on Serbian. We have spotted four groups of problems: the lack of a value for an existing category, the lack of a category, the interdependence of values and categories lacking some description, and the lack of a support for some types of categories. At the same time, various descriptions often describe exactly the same ...
    ... matching and replacement, and the newly constructed lemmas had to (a) exist in dictionaries; and (b) have an inverse marker. For instance, verbs afirmisati and afirmirati are two vari- ants (the first one being preferred today in Serbian) of the same verb ‘to establish’. Similarly, hleb and leb are ...
    ... for suffix variations in Figure 4 and for affix varia- tions in Figure 5. Similar procedures are produced to connect some deriva- tionally related entries (e.g. verbs and verbal nouns and adjectives) and to produce explicit inverse relations from originally implicit ones (in DELAS format). Figure ...
    ... 2006), subse- quently upgraded and renamed LeXimir (Stanković, Ranka and Krstev, Cvetana, 2016), was designed and implemented for the purpose of further development and management of morphological electronic dictionaries of Serbian (SMD), presented in more details in Section 3.. However, with the ...

  • 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

  • Analogue modelling of strain partitioning along a curved strike-slip fault system during backarc-convex orocline formation: Implications for the Cerna-Timok fault system of the Carpatho-Balkanides

    Nemanja Krstekanić, Ernst Willingshofer, Taco Broerse, Liviu Matenco, Marinko Toljić, Uroš Stojadinović (2021)
    analogno modelovanje, raspodela deformacija, geometrija indentera, Černa i Timok rasedni sistem
    ... faults and truncation of older structures in the south are common features in other models as well (e.g., fault 6 in M2, 6 and 7 in M3, 6 in M4, southern prolongation of 4 and 5 in M5, 5 in M7, 6 in M8, 6 and 7 in M9, 3 in M10, southern prolongation of 4 in M11 and M12, Fig. 5). The decrease in offset ...
    ... structure (1 in Fig. 3e and f) and the main strike-slip fault (2 in Fig. 3e and f) are connected by obliquely oriented thrusts in map view (3 and 4 in Fig. 3c–f, cross-section b-b’ in Fig. 3g) and NNW-SSE oriented strike-slip faults (5 and 6 in Fig. 3e and f, cross- section b-b’ in Fig. 3g). These ...
    ... without clear faulting (decrease in red and blue intensity westward along the basal thrust, in the region of the gravitational collapse and back-thrust system in Fig. 3f). In this area the strain type changes from shortening and extension in the south (red and blue in Fig. 3f, respectively) to oblique-slip ...

  • INVENTS: a hybrid system for subsurface ventilation analysis

    Nikola Lilić, Ranka Stanković, Ivan Obradović (2000)
    Ventilation system analysis is a complex process based on the calculation and analysis of numerous parameters. These problems can be successfully solved by the SimVent numerical package, but a full understanding and use of the obtained results require the involvement of an experienced specialist in the ventilation field. The solution was found in the creation of a hybrid system INVENTS, whose knowledge base represents a formalization of the expert knowledge in the mine ventilation field. In this paper we ...
    ... understanding and use of the obtained results require the involvement of an experienced specialist in the ventilation field. The solution was found in the creation of a hybrid system INVENTS, whose knowledge base represents a formalization of the expert knowledge in the mine ventilation field. In this paper ...
    ... introduction to the mine design process. In the planning process key relations are defined that have to be taken into account in the mine design phase. The initial step in the mine ventilation planing and design process is the establishment of a basic or initial network and an appropriate database related ...
    ... maintenance, in order to secure the highest possible level of system use and effectiveness. The final phase in the outlined design process is state evaluation and modification. All parameters of mine ventilation obtained by monitoring have to be compared with designed parameters and when differences ...

  • Assessments of effects of implementation of strategic plans for development of Belgrade District heating system

    Dejan Ivezić, Marija Živković, Aleksandar Madžarević, Miodrag Grujić (2020)
    The district heating system (DHS) is one of the key elements of the Belgrade energy system. Overview of the current state and basic characteristics of the DHS are presented in this paper. The focus is on the planned development of DHS and on the analyses of effects of realization of measures and projects defined by strategic documents related to DHS which are adopted by city authorities (Development Strategy of DHS and Strategy of Belgrade Development). Two exploratory scenarios were ...
    Daljinsko grejanje, LEAP, Primarni energetski faktor, Uvozna zavisnost, CO2 emisija

  • Indexing of textual databases based on lexical resources: A case study for Serbian

    Ranka Stanković, Cvetana Krstev, Ivan Obradović, Olivera Kitanović (2015)
    In this paper we describe an approach to improvement of information retrieval results for large textual databases by pre-indexing documents using bag-of-words and Named Entity Recognition. The approach was applied on a database of geological projects financed by the Republic of Serbia in the last half century. Each document within this database is described by metadata, consisting of several fields such as title, domain, keywords, abstract, geographical location and the like. A bag of words was produced from these ...
    ... geologic data, and provide a modern and effective in- formation basis for carrying out all activities related to planning, design and decision-making in the field of geology. Within the project a web portal3 was established that allows quick and easy access to geological data and information in the field ...
    ... ungrammatical words — in our case nouns, adjectives, adverbs and acronyms — followed by their frequencies. Thus, the text is lemmatized and lemmas (simple and multi-word) are extracted and their frequency is calculated. In that way 12,204 simple lemmas (with 450,418 occurences) and 271 MWUs (with 6,525 ...
    ... organization, persons — are entered in the index. Figure 1 represents one document from our collection in which recognized NEs are highlighted: locations in blue, persons in pink, and organizations in light green. Determination of term weights is a complex process and there are numerous models, the most ...

  • Effects of Energy Production and Consumption on Air Pollution in Serbia

    Marija Živković (2019)
    Energy production and combustion, mostly from unregulated or inefficient fuel combustion, are the single most important anthropogenic sources of air pollutant emissions. Energy sector in Serbia is highly fossil fuel intensive: 87.88% of energy consumed in Serbia is related to fossil fuels, while almost 95% of energy sources are combusted. In 2017. energy related carbon dioxide emission in Serbia is was 47.95 million tones. The main source of carbon dioxide emission was coal, responsible for almost 70% of energy ...
    energy related emissions, Serbia
    ... consumption in terms of carbon dioxide emission and firewood and oil derivates in terms of carbon monoxide and nitrogen oxides. Actions should sublimate both types of actions: avoid and reduce Effect or some measures that could be option for mitigating air pollution in Serbia are explored in 11.Emissions ...
    ... carbon dioxide emission in the country. Currently the transport sector is the main source of pollution in urban areas in Serbia, while the main sources of air pollution are: biomass (firewood) for carbon monoxide and NOx from the buildings sector and oil derivates for carbon monoxide and NOx from the transport ...
    ... to economic and social development of each community and improved quality of life of citizens. Energy demand in the world has a constant growth, which is driven by increased number of inhabitants and growth of life standard 1. Much of the world's energy is currently produced and consumed in ways that could ...

  • Actual contamination of the Danube and Sava rivers at Belgrade (2013)

    Milan Antonijević, Marija Arsović, Josef Cáslavský, Vesna Cvetković, Predrag Dabić, Mladen Franko, Gordana Ilić, Milena Ivanovic, Nevena Ivanović, Milica Kosovac, Dragana Medić, Slobodan Najdanović, Milica Nikolić, Jovana Novaković, Tatjana Radovanović, Djurdjina Ranić, Bojan Šajatović, Gorica Špijunović, Ivana Stankov, Jelena Tošović, Polonca Trebse, Olivera Vasiljević, Jan Schwarzbauer (2014)
    rečni sistemi, stanje zagađenja, organski zagađivači, teški metali, skrining analize, non-target screening
    ... (PBDEs) and organochlorine pesticides (OCPs), such as dichlorodiphenyltrichloroethane (DDT) and analogues, hexachlorocyclohexanes (HCHs) and hexachlorobenzene (HCB), were measured in sediments and biota.18 Lipids, amino acids and carbohydrates are reported to be present in particulate and dissolved ...
    ... (N2) temperature and flow were 350 °C and 10 L min-1, respectively. The ion trap scanning range was set from 50 to 800 u. Estradiol (α- and β-), estriol, estrone, diethylstilbestrol and ethinyl estradiol were detected in the negative ESI-mode, and norethindrone and progesterone in the positive ESI-mode ...
    ... SAVA AND DANUBE 1177 diffuse through the skin from alcoholic solutions, they can be stored in human fat tissues and human milk because of their lipophilicity.22 In addition lilial (butyl- phenylmethylpropanal) and methyl dihydrojasmonate frequently appear in frag- rances. They were detected in both ...

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

    Ivan Obradović, Ranka Stanković, Olivera Kitanović, Jelena Prodanović (2011)
    ... lexical resources and ontologies in Moodle, as multilingual language resources and ontologies are gradually becoming more and more important in many areas including education. Ontologies and intelligent services enable transformation of the today's Web of information and data into the Web of ...
    ... resources In the instruction of modern technologies, GIS no doubt being among them, one is very often encountered with the problem of terminology, namely of adequate translations of terms into Serbian. In order to help students in reading scientific articles and texts in English, and finding ...
    ... enhanced education and informal learning in a specific domain. In order to achieve these goals a Semantic Web based infrastructure has been designed, implemented and tested and an educational ontology has been developed. Another example of integration of semantic resources in education is ...

  • Refinement of waste phosphogypsum from Prahovo, Serbia: characterization and assessment of application in civil engineering

    Josip Išek, Lazar Kaluđerović, Nikola Vuković, Maja Milošević, Ivana Vukašinović, Zorica Tomić (2020)
    γ-spectrometry, brushite, chukhrovite, phosphogypsum, radionuclides, recrystallization
    ... XRD analysis, in accordance with the low levels of impurities obtained using SEM-EDS and ICP-OES elemental ana- lyses. Specifically, in the PGIP sample, Al, Si and P calculated as oxides by stoichiometry amount to 1.02 wt.% in SEM-EDS ana- lysis. In addition, 10 trace elements in ICP-OES 5analysis ...
    ... gamma-ray spectrometry in the quantification of _SU and Th in raw materials and by-products. Jourmal of Radioanalytical and Nuclear Chemistry, 311(2), 1163–1168. Jung Y., Lim J.M., Ji Y.Y., Chung K.H. & Kang M.J. (2017) The transport char- acteristics of _*U, Th, ' Ra, and “K in the production cycle ...
    ... 50 million tons are produced in China and 40 million tons are produced in the USA (IAEA, 2013). Raw phosphogypsum is generally yellowish, which, along with its greyish grains, defines it as a low-grade gypsum material in traditional applications, such as in cements and mortars (Costa et al., 2019) ...

  • Towards Sustainable Management of Transboundary Hungarian-Serbian Aquifer

    Zoran Stevanović, Peter Kozák, Milojko Lazić, Janos Szanyi, Dušan Polomčić, Balazs Kovács, Jozsef Török, Saša Milanović, Bojan Hajdin, Petar Papić (2011)
    ... management and monitoring at all levels. 4.9.2 Study Area The aquifer system under study is located between the Danube and Tisa (Tisza) rivers and extends to the vicinity of lGskunfelegyhaza on the Hungarian side (north) and to Vrbas in Serbia (souih). The main groundwater consumers are the cities and industries ...
    ... recreation and medical purposes in several spas in both countries, while geothermal energy is more efficiently used in Hungary. The number of wells that tap deeper aquifer layers with thermal waters is over 100 on the Hungarian side, while in Serbia there are some 15-20 such wells. In the Hungarian ...
    ... industries of Szeged, I(skunhalas, Baja, Tompa, H6dmez5vdsdrhely (csongr6d and Bdcs-Ifiskun counties in Hungary) and subotica, sombor, Baika Topola, vrbas, I(ula (in total 16 municipalities in Serbia, vojvodina province, Baika region). The study area is populated by over 800 000 inhabitants, about 407o ...

  • Distribution of major and trace elements in the Kovin lignite (Serbia)

    Dragana Životić, Olga Cvetković, Predrag Vulić, Ivan Gržetić, Vladimir Simić, Konstantin Ilijević, Biljana Dojčinović, Suzana Erić, Bogdan Radić, Sanja Stojadinović, Snežana Trifunović (2019)
    geochemical and mineralogical study was performed on lignite samples from the Upper Miocene Kovin deposit, hosting three coal seams. The Kovin lignite is characterized by high moisture content, medium to high ash yield, medium to high sulphur content and a relatively low gross and net calorific value. The mineralogical composition, and major and trace element contents were determined by X-ray diffraction, scanning electron microscopy with energy dispersive Xray spectroscopy (SEM-EDS) analyses, and inductively coupled plasma optical emission spectrometry (ICP-OES). ...
    General Earth and Planetary Sciences, General Environmental Science
    ... flakes and usually appears in association with haematite and other minerals including siderite and clays. The Fe­Mn oxides and Mn hydroxides were also detected in small amounts in coal seams I and II. The Ti and Ti­Fe oxides (rutile and ilmenite; Fig. 4i, j) oc­ cur as small aggregates in low amounts ...
    ... elements in seam II are both inorganically and organ­ ically bound. The results of the correlation analysis indicate a pyritic form of As and Cd in seam I, and an organic form in seam III. Cr, Pb and Se occur in aluminosilicate minerals in all three coal seams. Ni is associated with sulphides in coal ...
    ... present in thin layers near the up­ per and lower parts of the seam. A mixture of mineral­rich and matrix coal is present in thin layers near the floor of the seam. Stratified matrix coal in seam I predominates in the whole seam, while xylite­rich coal is present in thin layers in the upper and lower ...

  • Adsorption and degradation of some psychiatric drugs by sol-gel synthesized titania-based photocatalysts: influence of tungsten and sodium content

    Nina L. Finčur, Maja J. Šćepanović, Mirjana Grujić-Brojčin, Biljana F. Abramović, Jugoslav B. Krstić, Aleksandar Kremenović, Tatjana Srećković, Aleksandar Golubović (2019)
    Mesoporous anatase nanopowders were doped with 0.05−0.5 mol% of W6, in order to obtain more efficient photocatalyst than TiO2 Degussa P25 in the degradation of amitriptyline (AMI) under simulated solar irradiation (SSI). Dominant XRPD peaks were ascribed to anatase phase, with additional peaks which could correspond to brookite, TiO2 bronze and sodium titanate, Na2Ti9O19. The Raman scattering measurements have confirmed anatase as dominant phase, with broad Raman feature at ~270 cm−1 possibly related to Ti–O–Na stretching vibration. All W-doped ...
    Sol-gel synthesis, Doped titania nanopowders, XRPD, Raman spectroscopy, Adsorption and photocatalytic degradation, Psychiatric drugs

  • Vebran Web Services for Corpus Query Expansion

    Ranka Stanković, Miloš Utvić (2020)
    U ovom radu se govori o razvoju veb usluga Vebran i njihovoj primeni u poboljšanju pretraživanja korpusa. Veb-servisi Vebran koriste se za konsultovanje spoljnih leksičkih izvora za srpski jezik (uglavnom elektronski morfološki rečnici i srpski Vordnet) i proširivanje korisničkih upita radi dobijanja relevantnijih rezultata iz srpskih korpusa.
    corpus search, web service, Serbian lexical resources, query expansion
    ... equivalent terms and definition in another language (presently only English equivalents of definitions are in the database). Externally developed Dictionary of library and information sciences10 encompasses the terminology of theory and practice of librarianship and in- formation sciences and a wide range ...
    ... database and to store all information about lemma and form entries as structured data. DELAS-lemma entries are generally mapped to entries in tables LexicalEntry and LexicalSense (Figure 1). A lemma, its corresponding PoS and inflectional class code (defining all in- flected forms) are stored in the Le ...
    ... re- sources are discussed in Section 4. Morphological and semantic corpus query expansion, based on Vebran web services, is described in detail in subsec- tions 4.2 and 4.3 respectively. Finally, in Section 5 we conclude with some remarks concerning the future work. 2 Corpora Numerous corpora are developed ...

  • Microstructural and magnetic properties of electrospun hematite/cuprospinel composites

    Mira Ristić, Aleksandar Kremenović, Michael Reissner, Željka Petrović, Svetozar Musić (2020)
    Phase composition, microstructural and magnetic properties of electrospun hematite/cuprospinel composites were investigated. Samples were synthesized starting with 0 to 10 mol% of copper relative to iron. The round shape of reference electrospun fbres was preserved upon their heating up to 600 °C in air, whereas at 700 °C hollow substructure was additionally formed. In these reference samples the presence of hematite phase was detected by XRPD. A small amount (traces) of Fe3O4 /γ-Fe2O3 was also found, due to the ...
    Electrical and Electronic Engineering, Condensed Matter Physics, Atomic and Molecular Physics and Optics, Electronic, Optical and Magnetic Materials

  • Geodynamics of basins above subducted slabs: An integrated modelling study of tectonics, sedimentation, and magmatism in the Timok Magmatic Complex

    Uros Stojadinovic, Marinko Toljic, Branislav Trivic, Radoje Pantovic, Danica Sreckovic-Batocanin, Nemanja Krstekanic, Bojan Kostic, Milos Velojic, Jelena Stefanovic, Nikola Randjelovic, Maja Males (2024)
    Timok Magmatic Complex, Neotethys subduction, basin geodynamics, analogue modelling

  • Overcoming the Low Oral Bioavailability of Deuterated Pyrazoloquinolinone Ligand DK-I-60-3 by Nanonization: A Knowledge-Based Approach

    Jelena R. Mitrović , Branka Divović-Matović, Daniel E. Knutson, Jelena B. Ðoković, Aleksandar Kremenović, Vladimir D. Dobričić, Danijela V. Randjelović, Ivana Pantelić, James M. Cook, Miroslav M. Savić, Snežana D. Savić (2021)
    Poor water solubility of new chemical entities is considered as one of the main obstacles in drug development, as it usually leads to low bioavailability after administration. To overcome these problems, the selection of the appropriate formulation technology needs to be based on the physicochemical properties of the drug and introduced in the early stages of drug research. One example of the new potential drug substance with poor solubility is DK-I-60-3, deuterated pyrazoloquinolinone, designed for the treatment of various neuropsychiatric ...
    pyrazoloquinolinones, nanocrystals, wet media milling, fasted/fed bioavailability
    ... of DK-I-60-3 in nanocrystal dispersions (F5, F6, and F8) and corresponding suspensions (S5, S6, and S8) in different media at 37 ◦C. Solubility of DK-I-60-3 in nanocrystal dispersions as well as in corresponding suspen- sions was determined in water, 0.1 M hydrochloride acid, and phosphate buffer ...
    ... Detection and quantification of DK-I-60-3 and internal standard were performed in positive HESI mode (m/z = 328.10–282.05 and m/z = 349.00–303.85, respec- tively). 2.2.6. Statistical Analysis All measurements were performed in triplicate, and results were expressed as mean value ± SD, except in in vivo ...
    ... solubility of DK-I-60-3 in medium containing SLS and PVP in concentrations as in F5, F6, and F8 was 5.52 ± 1.22, 3.47 ± 0.25, and 3.05 ± 0.82 µg/mL, respectively, i.e., similar to the solubility in water. As for the polymeric stabilizers, molecular weight is an important factor in overcoming the van der ...

  • Simple 2D gravity–density inversion for the modeling of the basin basement: example from the Banat area, Serbia

    Ivana Vasiljević, Snežana Ignjatović, Dragana Đurić (2019)
    We have developed a technique to calculate lateral density distribution of the sedimentary basin basement by combining linear gravity–density inversion and 2D forward modeling. The procedure requires gravity anomaly data, depth-to-basement data and density data for the sediments (density–depth distribution). Gravity efect of density variations in the basement was extracted from the total gravity anomaly by removing the joint efect of the sediments with vertical density variations and homogeneous basement of average density contrast (calculated by 2D modeling). Gravity ...
    funkcije raspodele gustine, lateralna raspodela gustine, karta gustine podloge

  • Numerical Models of Debris Flows with Entrainment Analysis-Case Studies from the Republic of Serbia

    Jelka Krušić , Biljana Abolmasov, Miloš Marjanović (2021)
    The results of material entrainment analysis in RAMMS debris flow software, as well as numerical models of final flow heights for two case studies from the Republic of Serbia are presented. Both of debris flow cases started with initial sliding of huge volume block, prolonging to behave as flowing process. Results of the analysis showed that entrainment material affects final results of transportation model, runout distance, deposition area and volume of debris flow. In both cases entrainment volume is very ...
    tecišta, zadržavanje nanosa, RAMMS, validacija

  • Multi-word Expressions for Abusive Speech Detection in Serbian

    Ranka Stanković, Jelena Mitrović, Danka Jokić, Cvetana Krstev (2020)
    Ovaj rad predstavlja istraživanja na usavršavanju i unapređenju srpske verzije rečnika Hurtlex, višejezičnog leksikona uvredljivih reči. Posebnu pažnju posvećujemo dodavanju izraza sa više reči (polileksemskih jedinica) koji se mogu smatrati uvredljivim, jer su takvi leksički zapisi veoma važni za postizanje dobrih rezultata u mnoštvu zadataka otkrivanja uvredljivog jezika. Srpski morfološki rečnici se koriste kao osnova za čišćenje podataka i stvaranje rečnika. Istaknuta je veza sa drugim leksičkim i semantičkim resursima na srpskom jeziku i predviđena je izgradnja sistema za ...
    uvredljiv govor, govor mržnje, leksički izvori, višejezični leksikon, izrazi sa više reči
    ... introduced in Subsection 2.2. The analysis and improvement of Hurtlex for Serbian is given in Subsection 3.1. Overview of acquiring, describing and classifying the additional dataset is given in Section 4.1. Building of the morphological dictionary and its application in graphs is given in Subsection ...
    ... used HurtLex in the TRAC-2 task for aggression and misogyny detection, to facilitate retrofitting of fastText word embeddings for English, Hindu, and Bengali. In Pamungkas et al. (2018), HurtLex was used to aid auto- matic identification of misogyny in English and Italian tweets, while in Colla et al ...
    ... Valerio Basile, and V. Patti. 2018. Automatic iden- tification of misogyny in english and italian tweets at evalita 2018 with a multilingual hate lexicon. In EVALITA@CLiC-it. Endang Wahyu Pamungkas, Valerio Basile, and Viviana Patti. 2020. Misogyny detection in twitter: a multilingual and cross-domain ...