Претрага
296 items
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Gate Road Support Deformation Forecasting Based on Multivariate Singular Spectrum Analysis and Fuzzy Time Series
Luka Crnogorac, Rade Tokalić, Zoran Gligorić, Aleksandar Milutinović, Suzana Lutovac, Aleksandar Ganić (2021)Underground mining engineers and planners in our country are faced with extremely difficult working conditions and a continuous shortage of money. Production disruptions are frequent and can sometimes last more than a week. During this time, gate road support is additionally exposed to rock stress and the result is its progressive deformation and the loss of functionality of gate roads. In such an environment, it is necessary to develop a low-cost methodology to maintain a gate road support system. ...deformacije podgrade, lasersko skeniranje, višekanalna singularna spektralna analiza, prognoza, klasterisanje fuzzy vremenskih serija... V(i) Ni = ( v(i)1 , . . . , v(i)Ni ) , (i = 1, . . . , M), where N is the time of monitoring. Here, we provide the procedure for the x coordinates of the markers. The procedure for the z coordinates is completely the same. At the first stage of the algorithm, the decomposition, includes the following ...
... with a series length of N;; Vy = (o!’, Leey oN), (i=1, ...,M), where N is the time of monitoring. Here, we provide the procedure for the x coordinates of the markers. The procedure for the z coordinates is completely the same. At the first stage of the algorithm, the decomposition, includes the following ...
... s caused by tunnel excavation based on the use of analytical functions that describe the movements as a function of time and the face advance. A procedure based on analytical functions has been developed to support the prediction of the tunnel performance and surface movements. Merlini and Falanesca ...Luka Crnogorac, Rade Tokalić, Zoran Gligorić, Aleksandar Milutinović, Suzana Lutovac, Aleksandar Ganić. "Gate Road Support Deformation Forecasting Based on Multivariate Singular Spectrum Analysis and Fuzzy Time Series" in Energies, MDPI (2021). https://doi.org/https://doi.org/10.3390/en14123710
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Available technological procedures for capturing CO2 in the industrial and power generation sectors
Climate change is a major environmental issue caused by anthropogenic emissions of greenhouse gases. Capturing CO2 and storing it in suitable geological formations is one of the main technological solutions that can provide mitigation of CO2 emission into the atmosphere. Capturing CO2 represents the first phase in process of carbon capture and storage, and includes the application of various technologies for the separation of CO2 produced in the energy and industrial sectors. There are four main systems for capturing ...... [20-21]. CO2 solubility depends on presure and temperature, and it will increase with the increase of pressure and decrease of temperature. This procedure has many applications such as: in natural gas processing, in separation of CO2 from synthesis gas which is used in the production of hydrogen, ammonia ...
... reaction between CO2 and a solvent, and it is mainly applied for capturing CO2 in post-combustion systems [18]. Typical solvents for this technological procedure include liquid ammonia and aqueous alkanolamines such as monoethanolamine (MEA) and diethanolamine (DEA) [4,18]. MEA is the most promising solvent ...
... technology, and it is advantageous because it is suitable for retrofitting the existing power plants [22]. There are several disadvantages of this procedure. The potential amine degradation and evaporation can affect the solvent losses, high concentration of solvents could be corrosive to the equipment ...Lola Tomić, Vesna Karović Maričić, Dušan Danilović, Branko Leković, Miroslav Crnogorac. "Available technological procedures for capturing CO2 in the industrial and power generation sectors" in 8th International Conference Mining and Environmental Protection, 22 – 25th September 2021, Serbia, Univerzitet u Beogradu, Rudarsko-geološki fakultet (2021)
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Smanjenje sleganja plitkih temelja primenom mikrošipova
Slobodan Ćorić, Dragoslav Rakić (2021)Mikrošipovi su šipovi malog prečnika koji se grade tako što se u tlu specijalni postupkom formira bušotina koja se zatim armira i injektira. Njihov prečnik je najčešće 150 – 300 mm, a dužina može da bude i više desetina metara. Mikrošipovi mogu da se grade u svim vrstama tla i mogu da budu vertikalni i kosi. Oni se, stoga, koriste kao zamena za konvencionalne šipove i ankere. Primena mikrošipova u fundiranju predstavlja jedan savremeni način izgradnje i sanacije temelja/objekata. ...Slobodan Ćorić, Dragoslav Rakić. "Smanjenje sleganja plitkih temelja primenom mikrošipova" in Zbornik radova međunarodno naučno-stručnog savetovanja Zemljotresno inženjerstvo i geotehnički aspekti građevinarstva, Vrnjačka banja, 3-5. novembar 2021., Beograd : Savez građevinskih inženjera Srbije (2021)
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Synthesis and characterization of nanostructured Ca0.9Er0.1MnO3
Tijana B. Vlašković, Bojana Laban, Maja Milošević, Maria Čebela, Vladimir Dodevski, Milena Rosić (2023)... Finča“, Nacionalni institut Republike Srbije, P.O. Bok 522, 11001 Beograd, Srbija Nanostrukturni Cao.SEro., MnOx je sintetisan saharoza-nitratnon procedurom (SNP). Tokom ove metode sagorevanja su korišćene sledeće hemikalije: saharoza CxjaH»Oni koja ima dvostruku ulogu i goriva i kompleksanta, kalc ...
... Institute of the Republic of Serbia, P.O. Box 522, 11001 Belgrade, Serbia Nanostructured CaosSEro.,MnOx was synthesized by the sucrose-nitrate procedure (SNP). During this combustion method, sucrose Ci.H»Ori which is both fuel and complexant and metal ions in the form of calcium nitrate tetrahydrate ...Tijana B. Vlašković, Bojana Laban, Maja Milošević, Maria Čebela, Vladimir Dodevski, Milena Rosić. "Synthesis and characterization of nanostructured Ca0.9Er0.1MnO3" in Book of Abstracts Proceedings / 59th Meeting of the Serbian chemical society, Novi Sad, Serbia, June 1-2, 2023, Belgrade : Serbian Chemical Society (2023)
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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.... future, we plan to apply our procedure to dif- ferent corpora in order to obtain more acronym-definitions pairs and to supply missing information concerning gram- matical and inflectional properties of acronyms. Moreover, we intend to improve our extraction procedure in order to improve the recall ...
... rs Abstract 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 ...
... acronyms 987 acr. in masc. 323 acr. in fem. 64 acr. both m&f 35 acr. in plural 2 7 acronyms 987 e-dict_acr_forms 6,946 Table 1: Results of the procedure on our corpus The majority of (acronym, definition) pairs represent proper names – 996, and the majority of these proper names are organizations ...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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A fuzzy-based decision support model for effectiveness evaluation - a case study of examination of bulldozers
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 ...Miloš Tanasijević, Predrag Jovančić, Dejan Ivezić, Uglješa Bugarić, Radiša Đurić. "A fuzzy-based decision support model for effectiveness evaluation - a case study of examination of bulldozers" in International Journal of Industrial Engineering: Theory, Applications and Practice (2019)
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Resource-based WordNet Augmentation and Enrichment
In this paper we present an approach to support production of synsets for SerbianWordNet(SerWN)byadjustingPrincetonWordNet(PWN)synsetsusing several bilingual English-Serbian resources. PWN synset definitions were automatically translated and post-edited, if needed, while candidate literals for Serbian synsets were obtained automatically from a list of translational equivalents compiled form bilingual resources. Preliminary results obtained from a setof1248selectedPWNsynsetsshowthattheproducedSerbiansynsetscontain 4024 literals, out of which 2278 were offered by the system we present in this paper, whereas experts added the remaining 1746. Approximately one half of ...... further develop the semi-automatic procedure to enable automatic evaluation, periodical analysis and automatic extraction of XML synsets structure for further processing and integration into SWN with sumo, sentiments, relations etc. In our approach, we used the procedure described in (Mladenović and Mitrović ...
... and inserting new synsets into SerWN. While inserting, the procedure checks if there are mapping entries for SUMO, SentiWordNet and Domains resources and generates the appropriate links. 4. Initial results As the application of the procedure we have developed is a work in progress so far we can report ...
... synsets), we expected to get even better results than the ones in the experiment. Proceedings of CLIB 2018 109 3.2. The semi-automatic adjustment procedure In order to evaluate our approach for expanding SerWN the final list of parallel terms and a subset of non- adjusted PWN synsets were presented ...Ranka Stanković, Miljana Mladenović, Ivan Obradović, Marko Vitas, Cvetana Krstev. "Resource-based WordNet Augmentation and Enrichment" in Proceedings of the Third International Conference Computational Linguistics in Bulgaria (CLIB 2018), May 27-29, 2018, Sofia, Bulgaria, Sofia : The Institute for Bulgarian Language Prof. Lyubomir Andreychin, Bulgarian Academy of Sciences (2018)
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Mine ventilation system planning using genetic algorithms
The most common problem in contemporary mining practice related to the planning and analysis of ventilation systems is the optimization of partially regulated air distribution in mine ventilation networks. This paper presents a two step optimization procedure for partly regulated air distribution in mine ventilation networks. The first step is the determination of air distribution in all branches using the well known Hardy-Cross method. In the second step the distribution and parameters of air flow regulators with minimum engaged ...coal, lignite, and peat; ventilation systems; coal mining; underground mining; ventilation; mathematical models; design; air flow; optimization; calculation methodsNikola Lilić, Ranka Stanković, Ivan Obradović. "Mine ventilation system planning using genetic algorithms" in 6. international symposium on mine planning and equipment selection, Ostrava (Czech Republic), 3-6 Sep 1997, A.A. Balkema, Rotterdam (Netherlands) (1997)
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Istraživanje i valorizacija subgeotermalnih energetskih resursa
Dejan Milenić, Ana Vranješ (2015)Dejan Milenić, Ana Vranješ. Istraživanje i valorizacija subgeotermalnih energetskih resursa, Beograd : Univerzitet u Beogradu, Rudarsko-geološki fakultet, 2015
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GIS Application Improvement with Multilingual Lexical and Terminological Resources
... compounds is a tedious task. In the attempt to alleviate this problem, we have developed a procedure for automatic creation of lemmas for a given list of compounds (Stanković, 2008b). This procedure is based on rules and relies on data from morphological dictionaries of simple words. Automatic ...
... For example, in order to determine the third inflectional transducer for kvarcna stena ‘quartz rock’, the following rule of the abovementioned procedure, imbedded in the query expansion application WS4QE, was used: if the first word is an adjective in nominative singular and the second word is ...
... Dictionnaires électroniques du français. Langue française 87. Paris: Larousse Stanković R., (2008 b). „Improvement of Queries using a Rule Based Procedure for Inflection of Compounds and Phrases“, Polibits (37) 2008, Special section: Natural Langugage Processing, Journal of Research and Developement ...Ranka Stanković, Ivan Obradović, Olivera Kitanović. "GIS Application Improvement with Multilingual Lexical and Terminological Resources" in Proceedings of the 5th International Conference on Language Resources and Evaluation, LREC 2010, Valetta, Malta, May 2010, Valetta, Malta : European Language Resources Association (2010)
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Projektovanje u hidrogeologiji
Dejan Milenić (2010)Dejan Milenić. Projektovanje u hidrogeologiji, Beograd : Univerzitet u Beogradu, Rudarsko-geološki fakultet, 2010
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Геологија угљева
Драгана Животић (2018)Драгана Животић. Геологија угљева, Београд : Универзитет у Београду, Рударско-геолошки факултет, 2018
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Defining structural correlation using of total horizontal gradient
Gravity data can help to define the structural correlation along significant vertical shifts. The different procedures of mathematical transformations on gravity data are applied to define structural correlations. The paper presents the results obtained using the procedure total horizontal gradient on gravity data. The application of the total horizontal gradient helped to detect contacts with a large dip angle (vertical or subvertical contacts), which can be interpreted as faults. The study area located in the wider area of the ...Snežana Ignjatović, Ivana Vasiljević, Milanka Negovanović. "Defining structural correlation using of total horizontal gradient" in The 52nd International October Conference on Mining and Metallurgy, Bor, novembar 29-30.11.2021., University of Belgrade ‐ Technical faculty in Bor, Bor, November 2021 (2021)
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Експерименталне вежбе из физике : за студенте Рударско-геолошког факултета
Весна Дамњановић, Добрица Николић (2002)Весна Дамњановић, Добрица Николић. Експерименталне вежбе из физике : за студенте Рударско-геолошког факултета, Београд : Универзитет у Београду, Рударско-геолошки факултет, 2002
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An Integrated Environment for Management and Exploitation of Linguistic Resources
Ranka Stanković, Ivan Obradović (2009)... compound dictionary. The task of the rule based procedure is to generate a complete compound lemma, based on the strategy. However, the strategy and the procedure are inde- pendent, and changes in the strategy, in general, do not af- fect the procedure itself. Thus experiments with various rule ...
... of DELAC dictionar- ies for Serbian remained at a slow pace. Thus a procedure for automatic (or semiautomatic) construction of this type of dictionary on basis of a simple list of compounds was added. The procedure for automatic construction of entries for a DELAC dictionary is based ...
... guages. The majority of parallel texts collected within the HLT Groupare are aligned, with Serbian most often being one of the languages. The procedure of transforming paral- lel texts into aligned texts followed two basic steps with the goal of connecting equivalent segments. In the first ...Ranka Stanković, Ivan Obradović. "An Integrated Environment for Management and Exploitation of Linguistic Resources" in Proceedings of the International Multiconference on Computer Science and Information Technology, Computational Linguistics – Applications Workshop (CLA09), Mrągowo, Poland, October 2009, Piscataway : IEEE (2009)
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On the distribution modulo 1 of the sum of powers of a Salem number
Dragan Stankov (2016)It is well known that the sequence of powers of a Salem number θ, modulo 1, is dense in the unit interval, but is not uniformly distributed. Generalizing a result of Dupain, we determine, explicitly, the repartition function of the sequence , where P is a polynomial with integer coefficients and θ is quartic. Also, we consider some examples to illustrate the method of determination.Algebraic integer, the house of algebraic integer, maximal modulus, reciprocal polynomial, primitive polynomial, Schinzel-Zassenhaus conjecture, Mahler measure, method of least squares, cyclotomic polynomialsDragan Stankov. "On the distribution modulo 1 of the sum of powers of a Salem number" in Comptes rendus Mathematique (2016). https://doi.org/10.1016/j.crma.2016.03.012
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Extraction of Bilingual Terminology Using Graphs, Dictionaries and GIZA++
Branislava Šandrih, Ranka Stanković (2020)U nauci, industriji i mnogim istraživačkim oblastima, terminologija se brzo razvija. Najčešće, jezik koji je „lingua franca“ za većinu ovih oblasti je engleski. Kao posledica toga, za mnoga polja termini domena su koncipirani na engleskom, a kasnije se prevode na druge jezike. U ovom radu predstavljamo pristup za automatsko izdvajanje dvojezične terminologije za englesko-srpski jezički par koji se oslanja na usaglašeni dvojezični korpus domena, ekstraktor terminologije za ciljni jezik i alat za usklađivanje delova. Ispitujemo performanse metode na domenu ...... Results Module The basic steps of this module are: 1) keeping only candidates present in the English list (Procedure, ii), 2) performing intersection with Serbian extracted MWUs (Procedure, iii) and 3) additional filtering (optional) of bad candidates from the previous step. The interface of this ...
... December 2019 125 Šandrih B., Stanković R., “Extraction of Bilingual . . . ”, pp. 119–138 Figure 1. A FST for extraction of type N4X 3. A similar procedure was performed for English nouns, verbs and ad- jectives from the bilingual list. In order to obtain inflected forms with grammatical categories we ...
... Eng-TE in the other, while the extraction of Serbian terms (Input iii) was done by Serb-TE. With the notation introduced in Section 3, the extraction procedure con- sists of the following steps: 8 MULTEX-East English lexicon 126 Infotheca Vol. 19, No. 2, December 2019 Scientific paper Figure 2. Software ...Branislava Šandrih, Ranka Stanković. "Extraction of Bilingual Terminology Using Graphs, Dictionaries and GIZA++" in Infotheca, Faculty of Philology, University of Belgrade (2020). https://doi.org/10.18485/infotheca.2019.19.2.6
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Geoenvironmental Investigations at a Smelter Location in Bor (Serbia)
Petar Papić, Zvonimir Milijić, Jana Stojković, Jovana Milosavljević, Maja Todorović, Marina Ćuk, Željko Kamberović (2014)Petar Papić, Zvonimir Milijić, Jana Stojković, Jovana Milosavljević, Maja Todorović, Marina Ćuk, Željko Kamberović. "Geoenvironmental Investigations at a Smelter Location in Bor (Serbia)" in Challenges : Sustainable Land Management – Climate Change, Advances in Geoecology 43, Catena Verlag GMBH (2014)
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Comprehensive Profiling of Microbiologically Induced CaCO3 Precipitation by Ureolytic Bacillus Isolates from Alkaline Soils
Olja Šovljanski, Lato Pezo, Jovana Stanojev, Branimir Bajac, Sabina Kovač, Elvira Tóth, Ivan Ristić, Ana Tomić, Aleksandra Ranitović, Dragoljub Cvetković, Siniša Markov (2021)MICP process, kinetic study, calcite, vaterite, MALDI-TOF identification, Bacillus licheniformis, Sporosarcina pasteurii... Bacillus strains was performed through a newly formed procedure that involved six steps from selection and identification, through kinetic study, to the characterization of the obtained precipitates, for the first time. To shorten the whole selection procedure of 43 bioagents with the MICP potential, Standard ...
... Bacillus strains was performed through a newly formed procedure that involved six steps from selection and identification, through kinetic study, to the characterization of the obtained precipitates, for the first time. To shorten the whole selection procedure of 43 bioagents with the MICP potential, Standard ...
... Carpone, France) was performed following standard procedure using VITEK® 2 BCL ID cards (BioMérieux, Carpone, France). Additionally, identification by MALDI-TOF mass spectrometry was performed following Bruker’s direct transfer sample preparation procedure. MALDI- TOF mass spectra were obtained by using ...Olja Šovljanski, Lato Pezo, Jovana Stanojev, Branimir Bajac, Sabina Kovač, Elvira Tóth, Ivan Ristić, Ana Tomić, Aleksandra Ranitović, Dragoljub Cvetković, Siniša Markov. "Comprehensive Profiling of Microbiologically Induced CaCO3 Precipitation by Ureolytic Bacillus Isolates from Alkaline Soils" in Microorganisms, MDPI AG (2021). https://doi.org/10.3390/microorganisms9081691
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Hibridni sistem za planiranje i analizu ventilacije rudnika
... predstavlja skup procedura za izvršavanje proračuna aerodinamičkih otpora složenih ventilacionih mreža. Procedure su delovi koda za izvršavanje nekog zadatka i obično se pišu da bi odgovorile na određeni događaj. U okviru pomenutih procedura klase SimResNet karakteristične su sledeće: procedura za interpolaciju ...
... Vrši se procedura numerisanja čvorova: broj ulaznog čvora je 1,. a potom se numeriše svaki čvor ispod koga se nalazi već numerisan čvor. Procedura se vrši dok svi čvorovi ne budu numerisani. Svi ogranci (i,j) zadovoljavaju uslov iProcedura računanja ...
... prikazana je klasa Simulacije-DP sa svim procedurama u okviru ove klase. Osim uobičajenih procedura za logičku kontrolu i manipulaciju sa bazom podataka na slici 5.9 dijagramom stanja je prikazan dinamički model ove klase koji obuhvata karakteristične procedure za izvršavanje logike modela proračuna ...Nikola Lilić, Ranka Stanković, Ivan Obradović. Hibridni sistem za planiranje i analizu ventilacije rudnika, Rudarsko-geološki fakultet, Univerzitet u Beogradu, 2000