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442 items
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LRMI markup of OER content within the BAEKTEL project
... like author, publisher, datePublished, etc. It also defines specific metadata for types like Article, ImageObject, AudioObject, VideoObject, and so forth. The LRMI specification proposed classes AlignmentObject and EducationalAudience, as well as properties 1 : alignmentType, education ...
... learning resources is exploring the use of JSON-LD for sharing LRMI metadata as stand-alone records rather than embedded in the HTML of web pages so that it may be used in resource discovery by search services that are connected to the Learning Registry. Other OER projects, similar to BAEKTEL ...
... available in edX-platform, including a comprehensive set of course information, including enrollment information, configurable marketing copy, and so on. Figure 2: LRMI tagging in BAEKTEL Edx platform is using Mongo NoSQL database for storing courses and custom APIs are used for retrieving ...Ranka Stanković, Daniela Carlucci, Olivera Kitanović, Nikola Vulović, Bojan Zlatić. "LRMI markup of OER content within the BAEKTEL project" in The Sixth International Conference on e-Learning (eLearning-2015), September 2015, Belgrade, Serbia, Belgrade : Belgrade Metropolitan Univesity (2015)
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Low-temperature phase transition and magnetic properties of K3YbSi2O7
Predrag Dabić, Volker Kahlenberg, Biljana Krüger, Marko Rodić, Sabina Kovač, Jovan Blanuša, Zvonko Jagličić, Ljiljana Karanović, Václav Petříček, Aleksandar Kremenović (2021)alkalni silikati elemenata retkih zemalja, fazni prelazi, magnetne karakteristike, razdvajanje kristalnog polja, silikati lantanica... local symmetry is lower than cubic, so 2F7/2 splits into four levels with twofold degeneracy (Kramer’s doublets). In order to describe the susceptibility within the whole temperature range, one has to account for the thermal population of Kramer’s doublets, so the molar susceptibility of K3YbSi2O7 ...
... site local symmetry is lower than cubic, so Fp splits into four levels with twofold degeneracy (Kramer’s doublets). In order to describe the susceptibility within the whole temperature range, one has to account for the thermal population of Kramer’s doublets, so the molar susceptibility of K3YbSi,O, is ...
... transition in these apatite compounds is a reversible process. For potassium-containing rare-earth disilicates two struc- ture types have been described so far, which crystallize in the space groups P63/mcm and P63/mmc, respectively (Vidican et al., 2003; Latshaw et al., 2016c; Dabić et al., 2019). The ...Predrag Dabić, Volker Kahlenberg, Biljana Krüger, Marko Rodić, Sabina Kovač, Jovan Blanuša, Zvonko Jagličić, Ljiljana Karanović, Václav Petříček, Aleksandar Kremenović. "Low-temperature phase transition and magnetic properties of K3YbSi2O7" in Acta Crystallographica Section B Structural Science, Crystal Engineering and Materials, International Union of Crystallography (IUCr) (2021). https://doi.org/10.1107/S2052520621006077
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Assessing Criteria Weights by the Symmetry Point of Criterion (Novel SPC Method) - Application in the Efficiency Evaluation of the Mineral Deposit Multi-Criteria Partitioning Algorithm
Information about the relative importance of each criterion or the weights of criteria can have a significant influence on the ultimate rank of alternatives. Accordingly, assessing the weights of criteria is a very important task in solving multi-criteria decision-making problems. Three methods are commonly used for assessing the weights of criteria: objective, subjective, and integrated methods. In this study, an objective approach is proposed to assess the weights of criteria, called SPC method (Symmetry Point of Criterion). This point ...Вишекритеријумско одлучивање, тежине критеријума, тачка симетрије критеријума, налазиште минерала, алгоритам, процена учинкаZoran Gligorić, Miloš Gligorić, Igor Miljanović, Suzana Lutovac, Aleksandar Milutinović. "Assessing Criteria Weights by the Symmetry Point of Criterion (Novel SPC Method) - Application in the Efficiency Evaluation of the Mineral Deposit Multi-Criteria Partitioning Algorithm" in Computer Modeling in Engineering & Sciences (2023). https://doi.org/10.32604/cmes.2023.025021
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Rock excavation methods in urban areas
Stefan Milanović, Lazar Kričak, Milanka Negovanović, Nikola Simić, Jovan Marković, Nikola Đokić (2023)Povećan obim građevinskih radova, koji podrazumevaju izgradnju novih stambenih i poslovnih objekata, hotela, garaža, tržnih centara i slično, sve je češći u urbanim sredinama. Ovakvi radovi sve više dolaze u kontakt sa različitom vrstom problema prilikom izgradnje, kao jedan od tih problema izdvajamo pojavu čvrste stenske mase prilikom otkopavanja na lokacijama izgradnje budućih objekata predviđenih građevinskim projektom. Prilikom izgradnje objekata tj. dela objekta koji podrazumeva podzemne prostorije nekog objekta, potrebno je vršiti iskop materijala na lokaciji, međutim taj materijal ...Stefan Milanović, Lazar Kričak, Milanka Negovanović, Nikola Simić, Jovan Marković, Nikola Đokić. "Rock excavation methods in urban areas" in Podzemni radovi, Beograd : Rudarsko-geološki fakultet (2023). https://doi.org/10.5937/podrad2342047m
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Possibilities of retro-digitalized German-Serbian Mining Dictionary
U radu će biti prikazan opis procesa retrodigitalizacije dvojezičnog Nemačko-srpskog rudarskog rečnika iz 1923. godine čiji je autor rudarski inženjer Dragutin Stepanović (Степановић, 1923). Ovaj rečnik je zasnovan na skoro 4 000 leksičkih zapisa koji su prevodilački ekvivalenti ili uputnice. Umesto predgovora autor daje uvid u svoje pismo upućeno “Ministru šuma i rudnika” u kome piše o nameri da zabeleži reči koje se koriste u narodu kako bi izbegao upotrebu nemačkih reči. Iako broj odrednica nije toliko veliki, rečnik ...Biljana Lazić, Olivera Kitanović, Ivan Obradović. "Possibilities of retro-digitalized German-Serbian Mining Dictionary" in E-dictionaries and E-lexicography, Zagreb, 10-11 May 2019, Zagreb : Institut za hrvatski jezik i jezikoslovlje (2019)
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AR, CR and ARCR modeling for simulations and analyses of karst groundwater quality parameters
Although an invisible component of the hydrologic cycle, groundwater generally takes precedence over other water resources in the area of drinking water supply. Among groundwater resources, karst aquifers tend to be rich in sufficiently-accessible amounts of high-quality water. During most of the year, this water requires only disinfection prior to delivery to the end user. However, in many cases extreme rainfall and/or sudden snow melt results in transient turbidity, increase in bacterial count and temporary contamination (e.g. increase in ...autocorrelation, cross-correlation, autoregressive model, cross-regressive model, autocross regressive model, nitrates, Banja Spring, Serbia.Vesna Ristić-Vakanjac, Marina Ćokorilo-Ilić, Petar Papić, Dušan Polomčić, Radisav Golubović. "AR, CR and ARCR modeling for simulations and analyses of karst groundwater quality parameters" in Geološki anali Balkanskoga poluostrva, National Library of Serbia (2018). https://doi.org/10.2298/GABP1879071R
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Why classical sequence stratigraphy doesn't work in Pannonian basin?
Dejan Radivojević (2018)... in back‐arc areas (e.g., Prosser, 1993; Nottvedt et al., 1995; Martins‐Neto and Catuneanu, 2010). This concept significantly evolved in last twenty years, so the rift sequence stratigraphy model was made (Weimer & Posamentier, 1993; Loucks & Sarg, 1993; Emery & Myers, 1996; Posamentier & Allen, 1999; Catuneanu ...
... is alinated. In grabens with low subsidence, one or more of that systems tract could be absent. They are probably below seismic resolution level, so their recognition was not possible. The early rift cli‐ max systems tract usually ends up with downlap on pre‐Tertiary formations or on the initial ...
... tems tract the early one usually has thinnest sediments. In big grabens, seismic reflections appearance is frequently divergent toward fault plane so they have wedge shape. Because of active faulting sediments are frequently tilted. The late rift climax systems tract (S3c) differ from middle ri ...Dejan Radivojević. "Why classical sequence stratigraphy doesn't work in Pannonian basin?" in 17th Serbian Geological Congress, Vrnjačka Banja, 17-20 maj 2018, Srpsko geološko društvo (2018)
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Numerical Models of Debris Flows with Entrainment Analysis-Case Studies from the Republic of Serbia
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 ...Jelka Krušić , Biljana Abolmasov, Miloš Marjanović. "Numerical Models of Debris Flows with Entrainment Analysis-Case Studies from the Republic of Serbia" in Understanding and Reducing Landslide Disaster Risk. WLF 2020. ICL Contribution to Landslide Disaster Risk Reduction, Springer, Cham (2021). https://doi.org/10.1007/978-3-030-60706-7_25
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Named Entity Recognition for Distant Reading in ELTeC
Francesca Frontini, Carmen Brando, Joanna Byszuk, Ioana Galleron, Diana Santos, Ranka Stanković (2020)Akcija COST „Udaljeno čitanje za evropsku književnu istoriju“, koja je počela 2017. godine, ima među svojim glavnim ciljevima stvaranje višejezične zbirke evropskih književnih tekstova (ELTeC) otvorenog koda. U ovom radu predstavljamo rad koji je obavljen na ručnom označavanju selekcije ELTeC kolekcije za imenovane entitete, kao i na proceni postojećih alata za prepoznavanje imenovanih entiteta u pogledu njihove sposobnosti da automatski urade takve anotacije. U poslednjem paragrafu se razmatraju zajedničke tačke između ove inicijative i CLARIN-a.... C O S T A c tio n , w h ic h s ta r te d in 2 0 1 7 , h a s a m o n g its m a in o b je c tiv e s th e c r e a tio n o f a n o p e n so u rc e , m u lt i l in g u a l E u ro p e a n L ite ra ry T e x t C o l le c tio n (E L T eC ). In th is p a p e r w e p re s e n t th e ...
... l., 2 0 1 7 )) , e s ta b l is h in g a n u m b e r o f c a te g o r ie s a n d ru le s fo r c r e a t in g a n n o ta te d c o rp o ra , so th a t a u to m a tic a lg o r i th m s c a n t ry to r e p l ic a te su c h a n n o ta tio n . H o w e v e r , N E R is a p r e l im in ...
... a b o u rg e o is h o m e , s o m e th in g w h ic h d e m a n d s re s e a rc h e rs to b e a b le to d e te c t in d ic a to r s o f so c ia l s tru c tu re a n d ro le s , su c h a s h o n o r if ic s , n a m e s o f p ro fe s s io n s , e tc . A n o th e r s e t o f re ...Francesca Frontini, Carmen Brando, Joanna Byszuk, Ioana Galleron, Diana Santos, Ranka Stanković. "Named Entity Recognition for Distant Reading in ELTeC" in CLARIN Annual Conference 2020, Oct 2020, Virtual Event, France, CLARIN (2020)
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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... because of its extremely heterogeneous composition, consistency, biodegradability etc. In addition, physical properties of waste change over time, so the method of taking and selection of representative samples is problematic and has not yet been standardized. In this paper, the most common determination ...
... In addition, physical properties of •n žž% M:s| ; H n pj ii r waste change over time, both in depth and from · · O waste- location to location, so the method of taking and O selection of representative samples is problematic and y &@F"c'“f'“ a has not yet been standardized (Rakić et al., 2011) ...
... Grain size distribution of municipal waste was determined on the selected material from both landfills. Material was firstly mixed and homogenized, so the depth of taken material was not taken into consideration. Regardless of the fact that during the waste sorting, particles of larger dimensions ...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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Regional Slope Stability Analysis in Landslide Hazard Assessment Context, North Macedonia Example
Miloš Marjanović, Biljana Abolmasov, Igor Peshevski, James Reeves, Irena Georgievska. "Regional Slope Stability Analysis in Landslide Hazard Assessment Context, North Macedonia Example" in Understanding and Reducing Landslide Disaster Risk, Springer International Publishing (2020). https://doi.org/10.1007/978-3-030-60227-7_29
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WS4LR - a Worksation for Lexical Resources
... handles morphological dictionaries, wordnets, aligned texts and transducers equally and has already proved very useful for various tasks. Although it has so far been used mainly for Serbian, WS4LR is not language dependent and can be successfully used for resources in other languages provided that they follow ...
... manipulation of dictionaries both of lemmas and of inflected forms. In LADL format, all the entries in the dictionary of simple word lemmas, the so called DELAS, have the following form: lemma.Knnn [+SinSem]* where lemma is the simple word, in general in the form usually used in traditional ...
... DELAS dictionary and the set of transducers describing inflectional properties are used to produce the morphological dictionary of word forms, the so called DELAF. All the entries in this dictionary have the following form: form,lemma[:categories]* where form is a simple word form of a lemma that ...Cvetana Krstev, Ranka Stanković, Duško Vitas, Ivan Obradović. "WS4LR - a Worksation for Lexical Resources" in Proceedings of the Fifth Interantional Conference on Language Resources and Evaluation, Genoa, Italy, May 2006, ELRA - European Language Resources Association (2006)
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Fuzzy optimization in hydrodynamic analysis of groundwater control systems: Case study of the pumping station “Bezdan 1”, Serbia
Dragoljub Bajić, Dušan Polomčić (2014)A groundwater control system was designed to lower the water table and allow the pumping sta-tion “Bezdan 1” to be built. Based on a hydrodynamic analysis that suggested three alternative solutions, mul-ticriteria optimization was applied to select the best alternative. The fuzzy analytic hierarchy process methodwas used, based on triangular fuzzy numbers. An assessment of the various factors that influenced the selec-tion of the best alternative, as well as fuzzy optimization calculations, yielded the “weights” of the alternativesand the ...groundwater lowering, groundwater management scenario, fuzzy analytic hierarchy process,expert knowledge, triangular fuzzy numbers, linguistic variables... branch of fuzzy logic applied in hydrogeology is fuzzy optimization. The present paper describes an application of multicriteria fuzzy optimization - the so-called fuzzy analytic hierarchy process (FAHP), to select the optimal groundwater management scenario (groundwater control system) for the pumping station ...
... BAJIĆ (2014) proposed a groundwater control system for the “Bezdan 1” PS, whose function is to lower the water table to below the design eleva- tion, so that the pumping station can be built. Three alternatives were considered, to ensure protection against groundwater intrusion and provide for unhin- ...
... system, where the sys- tem was analyzed and its cost-effectiveness and flexibility assessed. In the present study, as the number of wells increased, so did capital expendi- ture and operating and maintenance costs. However, it should be noted that in some cases the construction of wells is more economical ...Dragoljub Bajić, Dušan Polomčić. "Fuzzy optimization in hydrodynamic analysis of groundwater control systems: Case study of the pumping station “Bezdan 1”, Serbia" in Geološki anali Balkanskoga poluostrva, Belgrade : University of Belgrade - Faculty of mining and geology (2014). https://doi.org/10.2298/GABP1475103B
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Part of Speech Tagging for Serbian language using Natural Language Toolkit
Ranka Stanković, Boro Milovanović (2020)Dok se razvijaju složeni algoritmi za NLP (obrada prirodnog jezika), osnovni zadaci kao što je označavanje ostaju veoma važni i još uvek izazovni. NLTK (Natural Language Toolkit) je moćna Python biblioteka za razvoj programa zasnovanih na NLP-u. Pokušavamo da iskoristimo ovu biblioteku za kreiranje PoS (vrsta reči) oznake za savremeni srpski jezik. Jedanaest različitih modela je kreirano korišćenjem NLTK API-ja za označavanje. Najbolji modeli se transformišu sa Brill tagerom da bi se poboljšala tačnost. Obučili smo modele na označenom ...... plethora of different algorithms makes this library a good choice for a research. Serbian language belongs to a group of low-resource languages so there’s a modest research on this topic. First attempts to create an automatic PoS tagger for Serbian relied on a dictionary. Delić et al. used custom ...
... distribution is similar. AII 1.1.3 However, taggers performed remarkably worse for the N_POS tagset. Information about the gender added complexity so simpler taggers could not deal with it easily. However, the best tagger models, CRF and Perceptron, kept the accuracy over 90 percent even with the ...
... on the test and unseen data Taggers shown in the Figure 3 are trained on the SMD_POS tagset because it was the most like the one in unseen data so we could map between two easily. CRF and Perceptron taggers saw a small improvement with the corrections from Brill tagger. However, all four models ...Ranka Stanković, Boro Milovanović. "Part of Speech Tagging for Serbian language using Natural Language Toolkit" in 7th International Conference on Electrical, Electronic and Computing Engineering IcETRAN 2020, Academic Mind, Belgrade (2020)
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Non-Detonating Chemical Mixture for Non-Invasive Methods of Rock Breaking
Within the Innovation developed several different non-detonating chemical mixtures for non-invasive methods of rock breaking. Laboratory and polygon tests gave the satisfactory results and knowledge enough to start the practical experiments in the field. The basis of this innovation is a theoretical assumption that certain chemical mixtures release a large quantity of gases during combustion. If these gases are found in the enclosed space a growing pressure on the walls of the chamber in which combustion takes place will ...Lazar Kričak, Milanka Negovanović, Nikola Simić, Stefan Milanović. "Non-Detonating Chemical Mixture for Non-Invasive Methods of Rock Breaking" in X International Scientific Congress Innovations 2024, Varna, Bulgaria, 24-27. jun 2024, Scientific Technical Union of Mechanical Engineering "Industry 4.0" (2024)
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Cutting Resistance Laboratory Testing Methodology for Underwater Coal Mining
... ion of the digging force on scrapers, considering the digging resistance of the soil. The values of digging resistance were determined for scrapers, so it is not recommended to be applied to BWE. Himmel [15] shows that the specific digging resistance is the only parameter that is largely independent ...
... procedure that did not include the influence of water pressure at a certain depth at which coal is mined. The bucket-wheel dredger performance analysis so far has recorded a large difference in cutting resistance, which was especially manifested in the drop of bucket-wheel excavator productivity, increased ...
... change in the mining depth, which is represented by the change of hydrostatic (confining) pressure. The suggested laboratory test methodology is proposed so that different values of hydrostatic (confining) pressure can be provided during the tests. As mentioned before, the basic methodology for determining ...Vladimir Čebašek, Veljko Rupar, Stevan Đenadić, Filip Miletić. "Cutting Resistance Laboratory Testing Methodology for Underwater Coal Mining" in Minerals, MDPI AG (2021). https://doi.org/10.3390/min11060564
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An Approach to Management Decision Support: The Coal Mine Pljevlja Management Information System
In this paper we describe the approach that has been used in the development of the Management Information System (MIS) in the Coal Mine Pljevlja in Montenegro. The methodology of this approach was based on new information technologies and management techniques which have already been successfully applied in other related fields. Its main goal was to introduce modern management techniques to mining, adapted to specific features of the mining industry, its operations and environment, thus enabling the tactical management ...... drawings of technical documentation, orders for prospective drawing up of projects required, orders for modification of technical documentation, and so on. 3 MIS SYSTEM The possibility to apply the most advanced IT in these areas contributes to the value of business in many ways: improvement of ...
... way. It is necessary that all the operative business segments of interest for the managerial structure of the company be electronically supported, so that summary information can be automatically provided. A production balance is made at the end of each shift, i.e. the data on the produced quantities ...
... patterns, trends, and exception conditions. An OLAP session takes place online in real time, with rapid responses to manager’s or analyst’s queries, so that their analytical or decision-making process is undisturbed. Online analytical processing involves several basic analytical operations, including ...Božo Kolonja, Ranka Stanković, Filip Vuković, Ivan Obradović. "An Approach to Management Decision Support: The Coal Mine Pljevlja Management Information System" in Proceedings of the Fifteenth International Symposium on Mine Planning and Equipment Selection, Torino, Italy, September 2006, Vol. 1,, Balkema (2006)
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Determining seismic hazard in slowly deforming region: Can we gather enough information from karst caves?
Ana Mladenović, Jelena Ćalić (2021)Methods to determine seismic hazard in any region vary depending on the regional seismicity, but can be roughly grouped into two main groups: one based on probabilistic methods that use data about known seismicity in the region, and another, which is based on data related to the faulting processes and determination of seismically active faults. Both groups of methods are relatively good for seismically active regions. However, in regions of low seismic activity and slow deformations, there is neither ...Ana Mladenović, Jelena Ćalić. "Determining seismic hazard in slowly deforming region: Can we gather enough information from karst caves?" in EGU General Assembly 2021, European Geosciences Union (2021). https://doi.org/10.5194/egusphere-egu21-8723
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Models of Determining the Parameters of Rock Mass Oscillation Equation with Experimental and Mass Blastings
... = ax + b. (23) Minerals 2018, 8, 70 7 of 18 We will increase ordinate values y = logv by one positive number c, so that all points Mi(xi, yi + c) are above axis x = logR, i.e., so that yi + c = logvi + c > 0. In this manner, the Equation (23) becomes equation: y + c = ax + b + c. (24) In practice ...
... logR-0-logv, certain points (logRi, logvi) will be below logR axis. In this case, we will increase the values of the logv ordinates by a positive number, so that all points are above the abscissa axis logR [11]. Such a procedure offers possibility to determine of parameters K and n from the equation for ...
... + B, (27) where: B = b + 3. (28) If we connect points Mi(xi, yi + 3) by line segments Mi Mi+1(i = 1, 2, ..., N − 1) we will get one broken line. In so doing, the area bounded by x-axis, line segments x1M1 and xN MN and broken line, consisting of (N − 1) trapezoid [12,13], has the value: ST = 1 2 [ ...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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Machine learning based landslide assessment of the Belgrade metropolitan area: Pixel resolution effects and a cross-scaling concept
Improvements of Machine Learning-based landslide prediction models can be made by optimizing scale, customizing training samples to provide sets with the best examples, feature selection, etc. Herein, a novel approach, named Cross-Scaling, is proposed that includes the mixing of training and testing set resolutions. Hypothetically, training on a coarser resolution dataset and testing the model on a finer resolution should help the algorithm to better generalize ambiguous examples of landslide classes and yield fewer over/underestimations in the model. This ...Uroš Đurić, Miloš Marjanović, Zoran Radić, Biljana Abolmasov. " Machine learning based landslide assessment of the Belgrade metropolitan area: Pixel resolution effects and a cross-scaling concept" in Engineering Geology , Elsevier (2019). https://doi.org/10.1016/j.enggeo.2019.05.007