Претрага
1477 items
-
Development of the Availability Concept by Using Fuzzy Theory with AHP Correction, a Case Study: Bulldozers in the Open-Pit Lignite Mine
Stevan Đenadić, Dragan Ignjatović, Miloš Tanasijević, Uglješa Bugarić, Ivan Janković, Tomislav Šubaranović (2019)Availability is one of the most used terms in maintainability engineering. This concept is used to denote: The quality of service of an engineering system, i.e., machines, weak points’ analysis, asset management, as well as making decisions in the process of life cycle management. Availability is an overall indicator and contains partial indicators that are oriented towards reliability, maintenance, and logistical support. Availability presents a variable value and changes in time and space. Usually, availability is shown as the ...... function A(t) in this case can be obtained as: A(t) = µ λ+ µ + λ λ+ µ · e−(λ+µ)·t (5) where the stationary value of the availability can be obtained as: A = kA = lim t→∞ A(t) = µ λ+ µ = 1 1 + λ µ (6) The kA value is called the coefficient of availability and is obtained when A(t) is calculated ...
... 2667, 0.675, 0.675, 0.55, 0.3, 0) 3.4. Identification To obtain the final ‘A’ grade for machine B1-N, the best-fit identification method was used as follows: d1(A(B1−N),‘A’) = √ ∑ j = 10 j = 1 ( µ j A(B1−N) − µ j A )2 = √ (0− 0)2 + . . .+ (0− 0)2 + (0.25− 0)2 + (0.475− 0)2 + (0.525− 0)2 ...
... 0)2 + (0.25− 1)2 = 1.16270 where µA(B1-N) according to (22) and µA according to (2) For other fuzzy sets: d2(A(B1−N),‘A’) = 0.91996, d3(A(B1−N),‘C′ = 1.55784, d4(A(B1−N),‘D’) = 1.73580, d5(A(B1−N),‘E′) = 1.70349. For dmin = d2: µ1 = dmin d1 · ∑i=5 i=1 dmin di = 0.91996 ( 1.16270 · ( 0.91996 ...Stevan Đenadić, Dragan Ignjatović, Miloš Tanasijević, Uglješa Bugarić, Ivan Janković, Tomislav Šubaranović. "Development of the Availability Concept by Using Fuzzy Theory with AHP Correction, a Case Study: Bulldozers in the Open-Pit Lignite Mine" in Energies, MDPI AG (2019). https://doi.org/10.3390/en12214044
-
Design of a sucker rod pumping system
Ana Ponoćko (2024)For a long time in the history of oil production, sucker rod pumps have been the first and in many cases the only choice when it comes to mechanical extraction methods. Proper selection of each individual element of the system enables optimization, which entails benefits in the form of increased efficiency and reduced costs. The first part of the paper presents the underground and surface equipment of the rod pump and describes the operation of the entire system. The ...... 2 | Gasanchors....a e eeaeaaaaaaeaeaeaeaa a aaeaeaaeeaeaeaeaaaktaktaet 22 3.3 - Sucker Rods ... eaaeeaeaeaeaaa a aaeaeaeaeeaeaeaeaaaktaktaet 24 3.4 | Tubing anchor........aaaaaaa a anaaanaaaaaeaa a aaa a aaaaaaaaaataatetet 26 4 SURFACE EQUIPMENT7........ a eeaaea a aaeaeae a aataeaataitekot 27 ...
... SUCKER ROD PUMPING SYSTEM.......a a anaeananaeee 32 5.1 · RodStar.a a eeaeaeaaaeaeaeaaaaaaaeaeaeaNeeaeeaeaeaaaataktae t 35 5.1.1. RodStar FeatureS.aaaaaaaaaaaaa a aeaan e ae a aaeaeaeaeaaaaaaeaeaittittkoi 36 5.2 | ProspeF..a a nanaaaraeaaeaaaaa a aaaaaaeaaaaaaa a aaaaaaeaaaaaaaNtatet 37 5.2.1 ...
... 1. Prosper Features al nanaaaaaaaaa a aaaaaaaaaaeaai ttt 38 6 COMPARATIVE ANALYSIS OF DIFFERENT SOFTWARE TOOL ... 39 6.1 „WellXX-1Iin RodStar....a e ee e aeaeaaeeaeeaeaaakaaktaet 40 6.2 WellXX-Iin Prosper......caaaaaaaa a anaraeaa a a aaaaaaaaaaaaea a aaataNtatet 44 63 _ WellXX-Iin QROD.... ...Ana Ponoćko. Design of a sucker rod pumping system, 2024
-
Coupling of artificial intelligence methods in the development of hybrid intelligent systems
In this paper we present an approach which couples various artificial intelligence (AI) methods in the solution of complex problems that cannot adequately be solved by a single AI method. We argue that the resulting, hybrid intelligent systems (HIS) can be successfully implemented with the use of available AI software libraries. Different coupling methods are analyzed and a classification of hybrid systems based on the chosen method is given. Two case studies of hybrid systems used in mining engineering ...hibridni inteligentni sistemi, spregnuti sistemi, metode veštačke inteligencije, rudarske primene veštačke inteligencije... program modules: a software package for aerodynamic definition of mine ventilation networks - ResNet, a software package for ventilation simulation in complex mine ventilation networks - SimVent and a diagnostic expert system for the analysis of ventilation systems - VENTEX. ResNet is a software that ...
... each of them solvable by a different method. These methods were then coupled in various ways which resulted in a hybrid system named INVENTS [5]. Figure 2 illustrates its architecture which, with its interactive use of computational fluid dynamics (CFD) software, presents a novel concept in complex ...
... all procedures for data manipulation. The use of SQL as a standard query language for data manipulation secures the openness of the hybrid system INVENTS for a connection with different environments. The VENTEX [2] system was developed as a knowledge-based (symbolic) upgrade of the SimVent numerical ...Ranka Stanković, Ivan Obradović, Nikola Lilić. "Coupling of artificial intelligence methods in the development of hybrid intelligent systems" in X Kongres Matematičara, Matematički fakultet, Beograd (2001)
-
Coal homogenization stockyard sizing “Tamnava – Zapad” case study
... of layers. However, a problem is encountered when the quality range is large, and the stacker has to work with a large difference in number of layers. Smaller ranges of observed parameters require a smaller number of layers, and vice versa. A small number of layers require a slow stacking speed ...
... (net), meaning a gross value of 1 to 2 days, while emptying takes twice as long. The variability of pile size moves this rule, because filling a shorter pile will take a shorter amount of time, and conversely, a longer pile takes longer to fill. Of course, planning pit operations as a function of ...
... for a power plant, as the end user, is considered to be ±500 kJ/kg [Ignjatović et al, 2007, Stevanović et al, 2015]. By observing the standard deviation, a diagram can be plotted where the number of layers is given as a function of the value range of the observed parameter. Figure 1 shows a standard ...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)
-
The influence of alkyl polyglucosides (and highly ethoxylated alcohol boosters) on the phase behavior of a water/toluene/technical alkyl polyethoxylate microemulsion system
Marija Ilic, Franz-Hubert Haegel, Vesna Pavelkic, Dragan Zlatanovic, Snezana Nikolic-Mandic, Aleksandar Lolic, Zoran Nedic (2016)The influence of additives (alkyl polyglucoside, Glucopon 600 CS UP and alcohol ethoxylate C18E100) on the behavior of the water/toluene/Lutensol ON 50 (technical oxoalcohol, i-C10E5) microemulsion system as a function of temperature and composition has been investigated. The phase behavior of the microemulsions was determined by vertical sections through the Gibbs phase prism (fish-like phase diagrams). Alkyl polyglucoside shifts the one phase region to lower temperatures compared with water/toluene/Lutensol ON 50 mixtures. This is contrary to the expectation, considering ...микроемулзија, толуен, алкил полиглукозид, оксоалкохол етоксилат, појачивач ефикасности, „fish“ дијаграми... Phase diagram determination KahlIweit ef a/ [30,31] introduced a way of study- ing the phase behavior of ternary or quaternary mix- tures. A procedure to obtain an overview of the phases is to draw the phase diagram at a constant oil/water ratio as a function of temperature, 7, and surfactant ...
... resemble the shape of a fish. Typically, temperature- -composition phase diagrams obtained for a 1/1 mass ratio of oil and water show a one-phase microemul- sion at relatively high surfactant concentration. At lower surfactant concentration a three-phase body exists consisting of a middle-phase m ...
... 20 and 20 . When a surfactant is mainly dissolved in water and two phases consist of a surfactant-rich water (lower) phase in equilibrium with an excess oil phase, the region is denoted as 20. At high tempe- rature a nonionic surfactant is more soluble in oil and forms a surfactant-rich oil ...Marija Ilic, Franz-Hubert Haegel, Vesna Pavelkic, Dragan Zlatanovic, Snezana Nikolic-Mandic, Aleksandar Lolic, Zoran Nedic. "The influence of alkyl polyglucosides (and highly ethoxylated alcohol boosters) on the phase behavior of a water/toluene/technical alkyl polyethoxylate microemulsion system" in Chemical Industry and Chemical Engineering Quarterly, National Library of Serbia (2016). https://doi.org/ 10.2298/CICEQ141105015I
-
Značaj geografske širine za lociranje uzročnika magnetnih anomalija kod prospekcije arheoloških lokaliteta
Vesna Cvetkov (2020)... Eppelbaum, L., Ben-Avraham, Z., Itkis, S. 2003. Ancient Roman Rema- ins in Israel provide a challenge for 23 A k t u e l n a i n t e rd i s c p l i n a r n a i s t ra ž i v a n j a t e h n o l o g i j e u a r h e o l o g i j i j u g o i s t o č n e E v ro p e physical-archaeological modeling ...
... iz više as- pekata i samim tim tačnije definisanje potencijalnih zona od interesa za arheo- 15 A k t u e l n a i n t e rd i s c p l i n a r n a i s t ra ž i v a n j a t e h n o l o g i j e u a r h e o l o g i j i j u g o i s t o č n e E v ro p e loška istraživanja i lociranje arheoloških ...
... dovoljno malih dimenzija da se ponašaju kao mali magneti i orijentišu paralelno sa MPZ. 17 A k t u e l n a i n t e rd i s c p l i n a r n a i s t ra ž i v a n j a t e h n o l o g i j e u a r h e o l o g i j i j u g o i s t o č n e E v ro p e Drugi bitan i najčešće razma- tran parametar ...Vesna Cvetkov. "Značaj geografske širine za lociranje uzročnika magnetnih anomalija kod prospekcije arheoloških lokaliteta" in Aktuelna interdisciplinarana istraživanja tehnologije u arheologiji jugoistočne Evrope: Zbornik radova, Prvi skup Sekcije za arheometriju, arheotehnologiju, geoarheologiju i eksperimentalnu arheologiju Srpskog arheološkog društva, Beograd, 28.02.2020. , Beograd : Srpsko arheološko društvo (2020)
-
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)
-
Razvoj ARCGIS geobaze površinskog kopa korišćenjem UML CASE alata
... GEODATABASE MODELING The fundamental component of a geographic information system is a spatial database or geodatabase. The concept of a database pertains to a collection of various types of geographic data, stored in the system’s data catalogue or a RDBMS (relational database management system) database ...
... authors’ wish to bring closer to the mining public at least a small part of the possibilities offered by GIS, both in mining activities and in environment protection. This paper outlines a methodology for development of a spatial database, that is, a geodatabase, for open pit mines. The geodatabase dubbed ...
... raster datasets or raster catalogues. Another way of creating a database is the design of a new spatial database using the tools from the ArcCatalog application and the ArcToolbox toolbox. They enable a direct, that is, “ad-hoc” creation of a physical database model, without previous conceptual ad logical ...Aleksandra Tomašević, Ljiljana Kolonja, Ivan Obradović, Ranka Stanković, Olivera Kitanović. "Razvoj ARCGIS geobaze površinskog kopa korišćenjem UML CASE alata" in Podzemni radovi, Beograd : Univerzitet u Beogradu - Rudarsko-geološki fakultet (2012)
-
Збирка задатака из Механике 1 и Отпорности материјала
Aна Петровић, Инес Гроздановић (2023)... Kka3arbke uaCOBHMKa) oko Tauke A. Ha Cnvuu 1.21 npvka3aHe cy cBe cuvine Koje nenyjy Ha ulTarn M RMXOBM kpauu 3a Tauky 4. Kpak cHuIe 3a Tauky A A HHje Kpak cHJIe F Cnuka 1.20 Kpak cune 18 CucrTeMu cuna KpaK cHune Ry (Isin aq) Kpak cuHje S (h sin a) y A KpaK cwute G (I/2 cos ...
... HaroHuHM nO noJbMMa Cy: _N _SBP_„P "Ca 24A ĆA N, -2P P OI — =—Oo—==>2 Ar A A o _M _9P_ dP M Al 34A A HarnoH je koHcTaHTaH y no7by jep je akcuvjjaniHa cMna KOHCTaHTHa y TIOJby, a nonpeuHu ripecek ce He MeM-=a. HanoHUM ce He Ha/lOBe3yjy, caMO Ce HaHecy Bpe/nHOCTUM y no7bMiMa (Cnuka 2.6). ...
... ŽXi=O=4P—8P+6P—XA X,A=2P Lleo urran je uenMuHM, na ce aHa na je E = 2,1· 104% = cohnst. TlovepaW»a kapakrepucTMuHWX rpeceka cy: A4.=0 DO OB Ac = Ag +g,l,_·[ll,l,l _ Ž,Žl (—ZŽŽ(ZZ) __q ŽŽ LOLO L O _N _2P_P Ta 24 A _Nu_-2P _ _„P OA A ĆA Nn GP „P III == =3= An 24 A 49 36upka aanaTaka ...Aна Петровић, Инес Гроздановић. Збирка задатака из Механике 1 и Отпорности материјала, Београд : Универзитет у Београду, Рударско-геолошки факултет, 2023
-
Integrated Stratigraphy of the Middle–Upper Jurassic of the Krížna Nappe, Tatra Mountains
carbon and oxygen isotopes, radiolarians, calcareous dinoflagellates, radiolarites, Krížna Nappe, West ern Carpathians, Tethys... [wt%] +-Pk201O. + PR948 + Pk1808 radiolarian St om io sp ha er a mo lu cc an a m Co lo mi sp ha er a na gy i ua -— sa Sc hi zo sp ha er el la C o l o m i s p h a e r a pi en in en si s a < Pk35 A. radiolarian o mwp Zadnia Kopka Košcieliska section in the Western ...
... BHISSSBSEEE j sošBSSGčS Š <-Lb51 ŠŠEŠŠEEŠS·” zi III <—-Lb38 A. s*sqassgsoečge d446 BSSsaBSBESS Ha:FO:B:Bo-r:B Cume'Š_EB°E sžaRSŠsSsSBOVŠ s gm%š—„··· & S <-L183 A, HIRKEEE Kl —_u! A ŠES Š8 s 555 90 20 Š a ŠSE Š Š +—-L140 A Šš - <—-L58 A. B Sample | CaCO,{[wt%] Microfacies Calcareous din ...
... versus 6O is used routinely to assess a potential diagenetic imprint on the stable-isotope record (e.g., Banner and Hanson, 1990; Huck ef a/., 2013). A sig- nificant positive correlation between 8IO and 85C may suggest a diagenetic imprint. This is because of a simulta- neous decrease in both 6'5O ...Renata Jach, Nevenka Đerić, Špela Goričan, Daniela Reháková. "Integrated Stratigraphy of the Middle–Upper Jurassic of the Krížna Nappe, Tatra Mountains" in Annales Societatis Geologorum Poloniae (2014)
-
Analysis Of the Process Of Carbon Capture Utilization And Storage In Underground Reservoirs
John Nyame (2024)The importance of mitigating the effects of global climate change has necessitated an in-depth exploration of innovative strategies to reduce carbon dioxide (CO2) emissions. Among these strategies, Carbon Capture, Utilization, and Storage (CCUS) has emerged as a promising and transformative solution. This master thesis delves into the diverse realm of CCUS processes, aiming to unravel the positives challenges, and opportunities within this dynamic field. The analysis begins with a systematic examination of carbon capture technologies, encompassing post-combustion, pre-combustion, and oxy-fuel combustion ...... unit has a fluid knockout drum, a compressor, a cooler and a gas turbine driver. Again, the compressor train with its gas turbine drive was designed and installed as part of the much larger operations of preparing the whole field development. The 4 units cost around 79million USD. A highly deviated ...
... provided by a regenerable metal oxide catalyst [47]. For pre-combustion CO2 capture, chemical looping can be combined with IGCC to produce syngas as a valuable byproduct. These technologies use a metal oxide as an oxygen carrier to circulate oxygen between the air and fuel reactors. A challenge ...
... exergy difference between the inlet and outlet. Here, the power consumed in a pump is added to the calculation of the exergy loss for a pump. In contrast, the power produced in a turbine is subtracted from the exergy loss of a turbine Pump: AEX loss= n'(eXin-eXou)+W"p (11) Turbine: AEx loss ...John Nyame. Analysis Of the Process Of Carbon Capture Utilization And Storage In Underground Reservoirs, 2024
-
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... optical emission spectrometry (ICP-OES). A Perkin Elmer, Optima 4300 DV spectrometer equipped with an AS-93 plus autosampler was used with a sample flow 1.5 mL min-1 and a wet plasma aerosol. RESULTS AND DISCUSSION Since a major aim of this study was to provide a comprehensive view on the state of ...
... is becoming more and more relevant as a source of drink- ing water. Therefore, an appropriate water quality control is needed as a base for a sustainable usage of river water. Pollution of the aquatic environment caused by inorganic chemicals is con- sidered a major threat to aquatic organisms including ...
... means of a Van Veen grab from a depth of 1.20 m and at the third location (Kapetanija), from a depth of 3.50 m. Sediment samples from the two locations on the Danube River were taken from depths of 0.90 m (Batajnica) and 1.20 m (Vinča). The samples were kept in pre-cleaned vessels and stored at a temperature ...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. "Actual contamination of the Danube and Sava rivers at Belgrade (2013)" in Journal of the Serbian Chemical Society, National Library of Serbia (2014). https://doi.org/10.2298/JSC131105014A
-
A Description of Morphological Features of Serbian: a Revision using Feature System Declaration
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 ...... 03:28:09 A Description of Morphological Features of Serbian: a Revision using Feature System Declaration Cvetana Krstev, Ranka Stanković, Vitas Duško Дигитални репозиторијум Рударско-геолошког факултета Универзитета у Београду [ДР РГФ] A Description of Morphological Features of Serbian: a Revision ...
... Motivation Description of morphological features of a language is a prerequisite for many NLP applications. This description can be simple or complex depending both on a language and application in question. Considerable efforts in standardizing such a description were undertaken, but many applications ...
... 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 ...Cvetana Krstev, Ranka Stanković, Vitas Duško. "A Description of Morphological Features of Serbian: a Revision using Feature System Declaration" in Proceedings of the 5th International Conference on Language Resources and Evaluation, LREC 2010, Valetta, Malta : European Language Resources Association (2010)
-
‘Blue-’ and ‘Brown-speckled’ pottery from Qalhât, the Sultanate of Oman (13–16th centuries): Comparison with traditional Omani 19–20 century productions
Representative ‘Blue speckled’ (13–16th centuries) and ‘Brown speckled’ (13–21st century) wares recovered from the excavations in Qalhât or collected around Bahlâ city (Sultanate of Oman) were characterized by XRPD, SEM-EDS, Raman/optical microspectroscopy, and thermal expansion. Minerals present in the body (quartz, augite and albite as major phases, calcite, dolomite, rutile, anatase, phosphate, hematite and magnetite as minor phases) were identified by XRPD and/or Raman spectroscopy. SEM-EDXS microanalysis was performed on the glazes in order to compare their composition, especially ...Liliana Gianni, Hélène Renel, Aleksandar Kremenović, Philippe Colomban. "‘Blue-’ and ‘Brown-speckled’ pottery from Qalhât, the Sultanate of Oman (13–16th centuries): Comparison with traditional Omani 19–20 century productions" in Boletín de la Sociedad Española de Cerámica y Vidrio, Elsevier BV (2020). https://doi.org/10.1016/j.bsecv.2020.06.005
-
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... can be defined as a triplet (a, b, c). The corresponding membership function is defined as [24]: µA(∆v) = 0, ∆v < a ∆v−a b−a , a ≤ ∆v ≤ b c−∆v c−b , b ≤ ∆v ≤ c 0, ∆v > c , (21) Step 2: determine a fuzzy observation of displacement. Triangular fuzzy number O(t) =(a(t), b(t), c(t)) is ...
... linguistic variable. It can be defined as a triplet (a, b, c). The corresponding membership function is defined as [24]: 0, Av <a Av—a ac Step 2: determine a fuzzy observation of displacement. Triangular fuzzy number O(f) =(a(t), b(t), c(t)) is also used to represent ...
... [20-22]. A fuzzy set A of AViyx.n is defined as follows: Av Av Ad a — faldou) | fal 2) 4 falAbmn) Avi, Avi2 Aomn (15) where f4 is the membership function of A, and f4: AV — [0,1]. The symbol “+” de- notes the union operator. Membership function represents the degree of membership of Av; in A, where ...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
-
Infotheca (Q25460443) in Wikidata
Ranka Stanković, Lazar Davidović (2021)Vikipodaci su baza znanja Zadužbine Vikimedija koja predstavlja zajednički izvor različitih vrsta podataka koje koriste ne samo drugi Vikipedijini projekti, već sve više i brojne aplikacije semantičkog veba. U ovom radu ćemo prezentovati primer integracije Vikipodataka sa digitalnim bibliotekama i eksternim sistemima, kao i mogućnost ubrzanja pripreme i unosa podataka na primeru radova iz časopisa za digitalnu humanistiku Infoteka.... of an item cam be a literal itself, that is, a character string (for instance: the length of the Danube is 2860 km) or a reference to some other item (the capital of Serbia is Belgrade, for example). An item can be described by a string of statements, each of which provides a fact or a piece of data about ...
... assigned a persistent identifier, a positive integer with an upper-case Q as a prefix, known as QID. This makes translation of the basic information necessary for recognizing a topic covered by an item without favouring any language whatsoever, the aim being to ensure the uniqueness of meaning of a particular ...
... item is, thus, linked to a unique identifier (QID), the identifier is, in turn, linked to the item’s corresponding title and description, so as to remove any ambiguity. An identifier of a data item (QID) can, in addition to being linked to a title and a description, have a number of aliases and statements ...Ranka Stanković, Lazar Davidović. "Infotheca (Q25460443) in Wikidata" in Infotheca, Faculty of Philology, University of Belgrade (2021). https://doi.org/10.18485/infotheca.2021.21.1.5
-
Keyword Extraction from Parallel Abstracts of Scientific Publications
... deriva- tionally related forms of a word to a common base form. Lemmatization is the process of grouping together the inflected forms of a word so they can be ana- lyzed as a single item, identified by the word’s lemma, or a dictionary form. Stemming usually refers to a process that chops off the ends ...
... method (algorithm) with a human annotation, precision is calculated as the number of keywords in the inter- section of a set of keywords annotated by a human (A) and a set of keywords annotated using algorithm (B) divided by the number of keywords annotated using the algorithm: P = A ∩ B B . (1) The recall ...
... recall is calculated as the number of keywords in the intersection of a set of keywords annotated by a human and a set of keywords annotated using the algorithm divided by the number of keywords annotated by a human: R = A ∩ B A . (2) The F1 score is the harmonic mean of precision and recall, calculated ...Slobodan Beliga, Olivera Kitanović, Ranka Stanković, Sanda Martinčić-Ipšić . "Keyword Extraction from Parallel Abstracts of Scientific Publications" in Sematic Keyword-Based Search on Structured Data Sources - Third International KEYSTONE Conference, IKC 2017 Gdańsk, Poland, September 11–12, 2017 Revised Selected Papers and COST Action IC1302 Reports, Springer (2017)
-
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 ...... ( in t w i t t e r corpus ) : lopov f r a c : f requency [ a : atv i tkoFrequency ; r d f : va lue "17"^^ xsd : i n t ] . # usage examples as a t t e s t a t i o n s : lopov f r a c : a t t e s t a t i o n attes tat ion_1324567 ; at tes tat ion_1324567 a f r a c : At t e s ta t i on ; c i t o : hasCitedEnt ...
... and Dialogue, pages 103–114. Springer, 2019. 24 John McCrae, Guadalupe Aguado-de Cea, Paul Buitelaar, Philipp Cimiano, Thierry Declerck, Asunción Gómez-Pérez, Jorge Gracia, Laura Hollink, Elena Montiel-Ponsoda, Dennis Spohr, et al. Interchanging lexical resources on the Semantic Web. Language Resources ...
... corpname=user%2Franka%2Fatwitco> ; r d f s : comment " Immoral or c r i m i n a l a c t i v i t i e s " ; f r a c : l o c u s : locus_2415677 ; f r a c : quotat ion " s v i p o l i t i č a r i su l o p o v i . " . : locus_2415677 a : Occurrence ; n i f : beginIndex 19 ; n i f : endIndex 25 . and emoticons ...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
-
A Tel Platform Blending Academic And Entrepreneurial Knowledge
... resource is the Serbian wordnet. A wordnet is composed of synsets, or sets of synonymous words representing a concept, with basic semantic relations between them forming a semantic network. Each synset word or “literal” is denoted by a “literal string” followed by a “sense tag” which represents ...
... the BAEKTEL language support system are managed by a web application (VebRanka), a web service (wsQueryExpand.asmx), an executable Windows application derived from our multipurpose tool LeXimir [10], and a function library (LeXimirCore), a component of LeXimir. The language support system ...
... technology plays a significant supportive role, thus encompassing the OER/OCW initiative. Goodyear and Retalis argue that designing usable, effective interactive TEL environments, such as BAEKTEL, in an efficient affordable way "is a demanding task, which requires creativity and a significant ...Ivan Obradović, Ranka Stanković, Jelena Prodanović, Olivera Kitanović. "A Tel Platform Blending Academic And Entrepreneurial Knowledge" in Proceedings of the The Fourth International Conference on e-Learning (eLearning-2013), September 2013, Belgrade, Serbia, Belgrade, Serbia : Belgrade Metropolitan University (2013)
-
Sustainable Modularity Approach to Facilities Development Based on Geothermal Energy Potential
The study presented in this paper assessed the multidisciplinary approach of geothermal potential in the area of the most southeastern part of the Pannonian basin, focused on resources utilization. This study aims to present a method for the cascade use of geothermal energy as a source of thermal energy for space heating and cooling and as a resource for balneological purposes. Two particular sites were selected—one in a natural environment; the other within a small settlement. Geothermal resources come ...геотермална енергија, Панонски басен, геотермална каскада, енергетска ефикасност, бањски центри, балнеологија, биоклиматска архитектура, стратегије пасивног дизајнирања, модуларни објекти... Dehghani-Sanij, A.; Kazemi, A.; Bordbar, N.; Farshchi, M.; Elmi, M.; Gharali, K.; Dusseault, M.B. A comprehensive study of geothermal heating and cooling systems. Sustain. Cities Soc. 2019, 44, 793–818. [CrossRef] 7. Soltani, M.; Kashkooli, F.M.; Dehghani-Sanij, A.; Nokhosteen, A.; Ahmadi-Joughi, A.; Gharali ...
... n. This study aims to present a method for the cascade use of geothermal energy as a source of thermal energy for space heating and cooling and as a resource for balneological purposes. Two particular sites were selected—one in a natural environment; the other within a small settlement. Geothermal resources ...
... n. This study aims to present a method for the cascade use of geothermal energy as a source of thermal energy for space heating and cooling and as a resource for balneological purposes. Two particular sites were selected—one in a natural environment; the other within a small settlement. Geothermal resources ...Nataša Čuković-Ignjatović, Ana Vranješ, Dušan Ignjatović, Dejan Milenić, Olivera Krunić. "Sustainable Modularity Approach to Facilities Development Based on Geothermal Energy Potential" in Applied Sciences-Basel, МDPI (2021). https://doi.org/10.3390/app11062691