Претрага
135 items
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Flyrock induced by blasting in surface mining
Milanka Negovanović, Lazar Kričak, Snežana Ignjatović, Stefan Milanović, Jovan Marković, Nikola Simić, Rade Šarac (2022)Miniranje predstavlja i dalje najefikasniji i najjeftiniji način eksploatacije velikih količina čvrstih mineralnih sirovina na površinskim kopovima. Energija eksplozije se koristi za fragmentaciju čvrste stenske mase do zahtevane granulacije. Pored pozitivnih efekata miniranja, postoje i određeni neželjeni efekti svakog procesa miniranja koji se mogu javiti, a to su: potresi tla, razletanje komada stene, vazdušni udari, otrovni i zagušljivi gasovi i prašina. Razletanje komada stene je nekontrolisano izbacivanje fragmenata odminirane stenske mase i predstavlja jedan od glavnih izvora materijalne štete ...Milanka Negovanović, Lazar Kričak, Snežana Ignjatović, Stefan Milanović, Jovan Marković, Nikola Simić, Rade Šarac. "Flyrock induced by blasting in surface mining" in Rudarski glasnik, Beograd : Rudarski institut (2022). https://doi.org/10.25075/BM.2022.05
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Application of geophysical and multispectral imagery data for predictive mapping of a complex geo-tectonic unit: a case study of the East Vardar Ophiolite Zone, North-Macedonia
... MD (1997) Geology of Yugoslavia. Geological Insti-tute - GEMINI, Belgrade, Spec. Publ., Monograph, I—197 Dumurdzanov N, Hristov S, Pavlovski B, Ivanova V (1981) Explana- tory notes for sheets Vitolište and Kajmakčalan. General geologi- cal map (1:100,000) of the Socialist Federal Republic of Yugosla- ...
... 250, with increments of 50. The RE modelling yielded both evaluation metrics and the predictive maps of ophiolites. Figure 6 presents a set of ten evaluation metrics that have been chosen to assess the performance of the model across various training data sets and different numbers of trees ...
... implemented on the RF_C_100_5MI model pertains to the considerable surplus in the number of predicted ophiolite class instances, which surpasses ten thousand, analogous to the statistical parity metric. In addition to variations in the predicted count of ophiolite instances, the KNN models are ...Filip Arnaut, Dragana Đurić, Uroš Đurić, Mileva Samardžić-Petrović, Igor Peshevski. "Application of geophysical and multispectral imagery data for predictive mapping of a complex geo-tectonic unit: a case study of the East Vardar Ophiolite Zone, North-Macedonia" in Earth Science Informatics, Springer Science and Business Media LLC (2024). https://doi.org/10.1007/s12145-024-01243-4
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Models of Determining the Parameters of Rock Mass Oscillation Equation with Experimental and Mass Blastings
... Majdanpek open pit were performed during blasting using half-second electric detonators. Delay time of initiation between boreholes was 0.5 s, which led to ten explosions and appropriate rock mass oscillation velocities. As explosive powdered ammonium nitrate for general purposes Amoneks-I manufactured by Trayal ...
... R, registered values of rock mass oscillation velocities by components vt, vv, vl and resulting rock mass oscillation velocities vrez for a total of ten explosions, are given in Table 1. Minerals 2018, 8, 70 10 of 18 Table 1. Survey of blasting parameters and measurement results in Majdanpek open ...Suzana Lutovac, Branko Gluščević, Rade Tokalić, Jelena Majstorović, Čedomir Beljić. "Models of Determining the Parameters of Rock Mass Oscillation Equation with Experimental and Mass Blastings" in Minerals, Basel : MDPI AG, Basel, Switzerland (2018). https://doi.org/10.3390/min8020070
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FrameNet Lexical Database: Presenting a Few Frames Within the Risk Domain
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 ...... be subjected to the same analysis as other LUs in the frame) (Fillmore et al. 2003, 297). 8. Having 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 ...
... Kilgarriff, Adam, Vıt Baisa, Jan Bušta, Miloš Jakubıček, Vojtěch Kovář, Jan Michelfeit, Pavel Rychl, and Vıt Suchomel. 2014. “The Sketch Engine: ten years on.” Lexicography 1 (1): 7–36. Kilgarriff, Adam, Pavel Rychly, Pavel Smrz, and David Tugwell. 2004. “Itri- 04-08 the sketch engine.” Information ...Aleksandra Marković, Ranka Stanković, Natalija Tomić, Olivera Kitanović. "FrameNet Lexical Database: Presenting a Few Frames Within the Risk Domain" in Infotheca, Faculty of Philology, University of Belgrade (2021). https://doi.org/10.18485/infotheca.2021.21.1.1
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Simple 2D gravity–density inversion for the modeling of the basin basement: example from the Banat area, Serbia
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 ...Ivana Vasiljević, Snežana Ignjatović, Dragana Đurić. "Simple 2D gravity–density inversion for the modeling of the basin basement: example from the Banat area, Serbia" in Acta Geophysica, Springer (2019). https://doi.org/10.1007/s11600-019-00328-9
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Bilingual lexical extraction based on word alignment for improving corpus search
Jelena Andonovski, Branislava Šandrih, Olivera Kitanović. "Bilingual lexical extraction based on word alignment for improving corpus search" in The Electronic Library, Emerald (2019). https://doi.org/10.1108/EL-03-2019-0056
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Coal homogenization stockyard sizing “Tamnava – Zapad” case study
... layers. STACKING METHODS AND NUMBER OF LAYERS PER PILE Generally speaking, there are two basic stacking methods, chevron and windrow, from which ten or so sub-methods have been derived by modifications thereof. When the required number of layers is small, the chevron method or a modification thereof ...Božo Kolonja, Dinko Knežević, Ranka Stanković, Dejan Stevanović, Detlef Trummer. "Coal homogenization stockyard sizing “Tamnava – Zapad” case study" in Proceedings of 13th International Symposium Continuous Surface Mining, ISCSM 2016, / (2016)
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Threshold-induced correlations in the Random Field Ising Model
... D,(S; Vin, A) and D, (Tins Vow A) for size S and internal waiting time T;,,, as well as for the distributions D, jena Vip A) and Dy (Tins Vi > X) of Tena and Tini- Now, let us suppose that the elementary probability dp(S,i; bS.) of obtaining the scaled type §,i satisfies dp(8,i; BSA) = b" dp(is 2), (12) ...
... A(T; Vay A), Ds(b*~'S; b* Vy, BSA) = bY *1*D6(S3 Vays A); (13) Dry (Tiny! B5 b* Vi» BoA) = 6" Dep (Tints Vins )> (14) Dy, (Tonal; O° Vi» bSX) bY Dy (Tena Vins ¥)> Dy,,(TinilBs B*Vy BOX) = BY 'Dz, (Tins Vin )- (15) The foregoing general predictions can be tested in the case of any response signal for ...
... derived scaling forms proposed in the previous section. In our analysis we have also identified different contributions of waiting times (Tint Texts Tine Ten» Tia)» Which all follow the same scaling form Eq. (20). This form predicts that rescaled distributions of each type of waiting time, obtained for system ...Sanja Janićević, Dragutin Jovković, Lasse Laurson, Đorđe Spasojević. "Threshold-induced correlations in the Random Field Ising Model" in Scientific Reports, Springer Science and Business Media LLC (2018). https://doi.org/10.1038/s41598-018-20759-6
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Development of Open Educational Resources (OER) for Natural Language Processing
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 ...... [2] Interest in NLP began in 1950 when Alan Turing published his paper entitled “Computing Machinery and intelligence,” [4] but in the past ten years saw a rapid and substantial growth in the commercialization of NLP. We believe that NLP is currently a critical technology for business, ...Cvetana Krstev, Biljana Lazić, Ranka Stanković, Giovanni Schiuma, Miladin Kotorčević. "Development of Open Educational Resources (OER) for Natural Language Processing" in The Sixth International Conference on e-Learning (eLearning-2015), September 2015, Belgrade, Serbia, Belgrade : Belgrade Metropolitan Univesity (2015)
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Towards translation of educational resources using GIZA++
... open-source licence, and competitive translation results. [2] 2. RELATED WORK Coursera, a leading MOOC provider [5], has announced a partnership with ten top organizations from eight countries to translate complete course lectures across multiple disciplines for students around the world, for free. There ...Ivan Obradović, Dalibor Vorkapić, Ranka Stanković, Nikola Vulović, Miladin Kotorčević. "Towards translation of educational resources using GIZA++" in The Seventh International Conference on e-Learning (eLearning-2016), September 2016, Belgrade : Metropolitan Univesity (2016)
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Overwiew of In-Pit Crushing & Conveying Technology in Open Pit Mines
The conditions under which contemporary surface mining operations is carried out obviously becoming increasingly complex. In such complex conditions, the optimization of haulage systems as the technological phase with the largest share in the total operating costs, is very important from the aspect of achieving profitability of the mining project. In a large number of cases, the application of traditional haulage systems with trucks (as the most dominant type of haulage in open pit mines) does not lead to ...Ali Nasirinezhad, Dejan Stevanović, Dragan Ignjatović, Petar Marković. "Overwiew of In-Pit Crushing & Conveying Technology in Open Pit Mines" in 8th International Conference MIining And Environmental Protection, Sokobanja, 22-25 September 2021, University of Belgrade, Faculty of Mining and Geology, Belgrade, Serbia (2021)
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Phase relations and physical indicators of municipal waste from old landfills in Serbia
Due to certain similarities of municipal waste and soil, usually for the determination of basic parameters of physical state, laboratory and field tests which are common in geotechnical investigations are used. It is often to construct an apparatus for special purpose to perform some specific laboratory and field tests. Therefore, different values of indicators of municipal waste physical state can be found in the literature. The basic reasons should be found in different definitions and methods that researchers use ...municipal waste, moisture content, unit weight, specific gravity, grain size distribution, porosityGeneral Computer Science... and thus automatically calculates the density of solids, using a pre-defined dry sample mass. The pycnometer produces accurate results based on ten consecutive measurements. The «analyses · werc performed on five municipal waste samples of different composition. The obtained specific gravity ...Dragoslav R Rakić, Irena G Basarić Ikodinović, Jovana M Janković, Tina D Đurić. "Phase relations and physical indicators of municipal waste from old landfills in Serbia" in Japanese Geotechnical Society Special Publication, The Japanese Geotechnical Society (2021). https://doi.org/10.3208/jgssp.v09.cpeg016
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Хазард од клизишта у Србији у 21. веку
Biljana Abolmasov (2019)... Yrephusarbe ytnuaja npoueca/nojasa Ha YrephvBatbe ontumanHnx ycnoBa UM MeTo”a UVJbEBY caHaunje ycnose Kopuuherba npoctopa Teometpnjcka 3D Kapaktepusauyja Tena KnMsMUTa, PervoHanHa cBojcTBa reonowke cpeAnHe nono>kaj HW o6nMK KnMsHe NoBpuIN penesanTua 3a pasBoj npoueca Mexanusam Kpetatea UW Bpcta noKpeHytor ...Biljana Abolmasov. "Хазард од клизишта у Србији у 21. веку" in Геохазард у Србији у 21. веку – знање је најбољи бедем против стихије, Српска академија наука и уметности (2019)
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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 ...Hans Peter Nytoft, Geir Kildahl-Andersen, Sofie Lindström, Frode Rise, Achim Bechtel, Danica Mitrović, Nataša Đoković, Dragana Životić, Ksenija A. Stojanović. "Dehydroicetexanes in sediments and crude oils: Possible markers for Cupressoideae" in Organic Geochemistry, Elsevier BV (2019). https://doi.org/10.1016/j.orggeochem.2019.01.001
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A Twitter Corpus and Lexicon for Abusive Speech Detection in Serbian
Uvredljivi govor na društvenim medijima, uključujući psovke, pogrdni govor i govor mržnje, dostigao je nivo pandemije. Sistem koji bi bio u stanju da detektuje takve tekstove mogao bi da pomogne da internet i društveni mediji postanu bolji virtuelni prostor sa više poštovanja. Istraživanja i komercijalna primena u ovoj oblasti do sada su bili fokusirani uglavnom na engleski jezik. Ovaj rad predstavlja rad na izgradnji AbCoSER-a, prvog korpusa uvredljivog govora na srpskom jeziku. Korpus se sastoji od 6.436 ručno označenih ...... As the data source, we used tweets from the Twitter social network. Tweets from user timelines of 111 Twitter accounts were gathered and annotated by ten independent annotators working in pairs so that each tweet was annotated by two independent annotators while one supervising annotator resolved inconsistent ...
... only one person can be biased because it reflects his (or her) personal opinion [3], we decided each tweet be annotated by two independent annotators. Ten annotators participated in the annotation and therefore the data set was split into five parts and each part was annotated by an annotator pair. All ...Danka Jokić, Ranka Stanković, Cvetana Krstev, Branislava Šandrih. "A Twitter Corpus and Lexicon for Abusive Speech Detection in Serbian" in 3rd Conference on Language, Data and Knowledge (LDK 2021), MDPI AG (2021). https://doi.org/10.4230/OASIcs.LDK.2021.13
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A Lexical Approach to Acronyms and their Definitions
In this paper we present a comprehensive approach to acronyms for Natural-Language Processing (NLP) of Serbian texts. The proposed procedure includes extraction of acronyms and their definitions that are usual Multi-Word Units (MWUs), shallow parsing of MWUs that enables MWU lemmatization and production of entries in morphological electronic dictionaries, both for MWU and acronyms, that are provided with grammatical, syntactic, semantic and domain information. This approach enables representation that reflects complex relations between acronyms and their definitions.... much as in many other lan- guages, represent abbreviations usually formed from ini- tial letters of a multi-word name or a phrase, they are of- ten written in upper-case letters only, without any space or other separators. As a result, MWUs are squeezed into simple words which have specific orthography ...Cvetana Krstev, Duško Vitas, Ranka Stanković. "A Lexical Approach to Acronyms and their Definitions" in Proceedings of the 7th Language & Technology Conference, November 27-29, 2015, Poznań, Poland, Springer (2015)
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Using Query Expansion for Cross-Lingual Mathematical Terminology Extraction
Velislava Stoykova, Ranka Stanković (2018)Velislava Stoykova, Ranka Stanković. "Using Query Expansion for Cross-Lingual Mathematical Terminology Extraction" in Advances in Intelligent Systems and Computing, Springer International Publishing (2018). https://doi.org/10.1007/978-3-319-91189-2_16
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Multi-Criteria Approach for Selecting Optimal Dozer Type in Open-Cast Coal Mining
Ivan Janković, Stevan Đenadić , Dragan Ignjatović , Predrag Jovančić , Tomislav Šubaranović, Ivica Ristović (2019)... Average of machine-hours per ten years, work until a general repair, average number of failures per thousand working hours of machine, and technical availability. The evaluation of the average working hours (WH) was analysed by observing each machine individually during the first ten years it spent in exploitation ...Ivan Janković, Stevan Đenadić , Dragan Ignjatović , Predrag Jovančić , Tomislav Šubaranović, Ivica Ristović . "Multi-Criteria Approach for Selecting Optimal Dozer Type in Open-Cast Coal Mining" in Energies, MDPI (2019). https://doi.org/https://doi.org/10.3390/en12122245
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Multiple-Criteria Decision-Making in Mine Development Planning
Sanja Bajić (2023)The Borska Reka ore deposit is an experimental location where developed methodologies have been applied. It is the largest ore body within the Bor mining complex, which has been the subject of numerous studies and analyses for more than three decades. The paper focuses on the application of FAHP and the VIKOR method to address ranking of alternatives and select the optimal mining method by means of fuzzy multicriteria optimization.Sanja Bajić. "Multiple-Criteria Decision-Making in Mine Development Planning" in Proceedings of the 5th International Underground Excavations Symposium, 5-6-7 June 2023, Istanbul, Topkapi : Dinç Ofset Mat. Rek. San. ve Tic. Ltd. Şti. (2023)
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Речник САНУ као база терминолошких речника (на примеру речника кулинарства)
... Springer-Verlag. 3. Kilgarriff, A., Baisa, V., Bušta, J., Jakubíček, M., Kovář, V., Michelfeit, J., Rychlý, P., Suchomel, V. (2014). The Sketch Engine: ten years on. Lexicography 1(1), pp.7–36. 4. Dunning, T. (1993). Accurate methods for the statistics of surprise and coincidence. Computational Linguistics ...Рада Стијовић, Олга Сабо, Ранка Станковић. "Речник САНУ као база терминолошких речника (на примеру речника кулинарства)" in Словенска терминологија данас, Београд : Српска академија наука и уметности (2017)