Претрага
639 items
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A WebGIS Decision Support System for Management of Abandoned Mines
Ranka Stanković, Nikola Vulović, Nikola Lilić, Ivan Obradović, Radule Tošović, Milica Pešić-Georgiadis (2016)... nearest town, approved area or local recipient water can optionally be entered manually. Field values for type of mineral resource are domain controlled, so the user can only select from the list of pre-defined values. The same is true for status, which can be: active, abandoned, unknown, temporary suspension ...
... about these facilities. Thus the current state of these facilities can be compared with existing data, followed by an expert assessment of the current situation. For the other subgroup only the expert assessment of the current situation can be carried out, as a basis for further action. Analysis and solutions ...
... contained in the mine water. Geothermal energy systems using heat pumps to extract this heat can be used to offer local employment and energy resilience to the surrounding communities [1]. Abandoned mine methane (AMM) can also be recovered from closed coal mines and used for producing thermal and electrical ...Ranka Stanković, Nikola Vulović, Nikola Lilić, Ivan Obradović, Radule Tošović, Milica Pešić-Georgiadis. "A WebGIS Decision Support System for Management of Abandoned Mines" in Energies 7 no. 9 (2016): 567. https://doi.org/10.3390/en9070567
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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... (filtrate). Municipal waste composition also greatly influences on average unit weight. As an illustrative example for this, we can specify “PET” packaging, or a can whose unit weight is Y=2 kN/m? when it is empty, or around y = 12 kN/m* when it is filled with fluid, and when it is compressed ...
... municipal waste is complex because waste contains pores inside particles and between particles. In the literature certain terms can be found based on which specific gravity can be determined depending on the content of organic matter, noting that the most of results were obtained by the research of ...
... porosity (m) can be analysed as secondary porosity (porosity within particles) and porosity between partcles. However, in this way 109 definition of phase composition as well as determination of mechanical properties of municipal waste is further complicated, because in the landfil can be found ...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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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 ...... of liquid CO2 that can be stored at high pressure through liquid pumping [11,23]. This technological procedure is applied for streams with high concentration of CO2, approximately 90%. The main advantages of cryogenic distillation are: technology is relatively simple, process can be carried out at ...
... nic 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 ...
... of various technologies for the separation of CO2 produced in the energy and industrial sectors. There are four main systems for capturing CO2 that can prevent releasing CO2 into the atmosphere, such as: capturing from industrial process stream, capturing after combustion, capturing before combustion ...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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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.... implementation is a case study that can be further extended to other use cases, such as conferences and digital libraries. The Scholia tool is being developed as part of a lager initiative, WikiCite,7 aiming to index biblio- graphic data in Wikidata on the resources that can be used to corroborate the claims ...
... entry The entry of individual pieces of data is often a time-consuming task, but it can be sped up in the situations where data already exists and is stored in different digital formats. With proper prior preparation, it can be entered in Wikidata semiautomatically. Therefore, the basic idea was to speed ...
... been linked to the corresponding Wikidata entry, so that not only each individual, particular Wikidata view can be accessed directly, but also that some of the useful visual representations can be integrated within the appli- cation itself. Figure 1 features an example of a pattern in Biblisha showing ...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
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VENTEX: An Expert System for Mine Ventilation Systems Analysis
Analiza sistema za ventilaciju je komleksan proces, koji bazira na proračunu brojnih parametara, koji se odnose na: stanje mreže, provetrenost, stabilnost sistema, gubitke vazduha, klimatske uslove, gasno stanje, ugroženost od požara i opasne prašine. Navedeni problemi se uspešno rešavaju paketom SimVent, ali potpuno razumevanje i korišćenje dobijenih rezultata zahteva angažovanje iskusnog specijaliste iz oblasti ventilacije. Rešenje je nađeno u kreiranju ekspertnog sistema VENTEX, čija je baza znanja formalizacija ekspertskog znanja iz oblasti ventilacije rudnika. U radu je prikazana metodologija ...... goal of the system is the evaluation of the general ventilation state of the mine. This global goal can be subdivided into a hierarchical structure of subgoals where each of these subgoals can be viewed as the estimation of a set of parameters which determine the general mine ventilation ...
... hierarchical structure incorporating inheritance as an important property. Slots of a frame can obtain values in several different ways. Since the frame system is a hierarchical structure, the slot values can be filled in on of the three following ways: - through direct input, - by activating ...
... environment. In the KAPPA-PC system, the components of the domain are represented by objects that can be either classes or instances within classes. The relationships among the objects in a model can be represented by linking them together into a hierarchical structure. Thus the modified OOA model ...Ranka Stanković, Nikola Lilić, Ivan Obradović. "VENTEX: An Expert System for Mine Ventilation Systems Analysis" in YU Info '96 Brezovica, Društvo za informacione sisteme i računarske mreže (1996)
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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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Развој геолошког терминолошког речника ГеолИССТерм
... ips among concepts represented by the terms are: hypernym and hyp- onym that can also be viewed as the broader and the narrower term respectively. The terms in the hierarchy are linked via the is a relation which can be: • The hyponym of the same type as the hy- pernym • The hyponym is part ...
... these en- tities Therefore, an ontology can be viewed formal representation of knowledge which includes the vocabulary containing a set of concepts, seman- tic relationships between those concepts and simple reasoning about a specific domain. It can also be regarded as a data model describing ...
... The relationships between the concepts repre- sented by the terms are: hyponymy and hyperny- my that can be regarded as referring to a broader and a narrower term respectively. The relations can be further expanded by including synonymy, where the basic term becomes associated with the terms of ...Ranka Stanković, Branislav Trivić, Olivera Kitanović, Branislav Blagojević, Velizar Nikolić. "Развој геолошког терминолошког речника ГеолИССТерм" in INFOteka: časopis za informatiku i bibliotekarstvo, Beograd : Zajednica biblioteka univerziteta u Srbiji (2011)
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Keyword Extraction from Parallel Abstracts of Scientific Publications
... provides a controlled and fair environment for the evaluation. We can conclude that SBKE can be easily ported to a different language, domain and type of text in the sense of its structure. Still, there are drawbacks, the method can extract only the words that appear in the text. However, we per- formed ...
... set, the F1 scores are 40.08% and 45.71% respectively. This work shows that SBKE can be easily ported to new a language, domain and type of text in the sense of its structure. Still, there are drawbacks – the method can extract only the words that appear in the text. Keywords: Graph-based keyword extraction ...
... complex grammatical rules that cannot be adequately expressed by stemming rules. However, for highly-inflected languages, lemmatization can hardly be avoided as each keyword can have many inflected forms (for multiword units from five to ten or even more). On the other hand, for English several efficient and ...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)
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2D geoelectrical resistivity tomography application at the former city waste dump "Ada Huja": Eco-geological problem
... because of that units of the same profile line can have different resistivity scales. Part three of the profile line I has a length of 124 m (Figure 4). A high value resistivity zone with a length of 56 m (252 m to 308 m of the profile line) can be noticed and it represents most likely sand, ...
... the GPR cross section thin layers (laminas) can be seen that indicate a high vertical resolution of the GPR equipment. 2D geoelectrical resistivity tomography … 65 Display of the sand lens distribution (Figure 6) as well as the marl basis can greatly help with getting a better understanding ...
... 7) obtained on six depth levels can be used to further understand the overall geometry of the examined half-space. Layer one, two and three are high resistivity layers due to the disposal of sand, gravel and construction material. This type of resistivity trend can be followed to the depth of 6.95 ...Branislav Sretenović, Filip Arnaut, Ivana Vasiljević, Vesna Cvetkov. "2D geoelectrical resistivity tomography application at the former city waste dump "Ada Huja": Eco-geological problem" in Podzemni radovi, Centre for Evaluation in Education and Science (CEON/CEES) (2019). https://doi.org/10.5937/PodRad1934059S
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Building Terminological Resources in an e-Learning Environment
... registered using the class Koncept. Concepts can be both general, common to all subfields of mining engineering, or specific mining engineering concepts. The hypernym/hyponym relation in RudOnto is enabled by involution, so that each hyponym can appear only once in the resource hierarchy, and ...
... most suitable tutor for a student depending on the set of new concepts the student needs to learn. Domain expertise can be shared within this model, and it can also serve as a framework for web based integration of multiple tutors. However, realizing that the transformation of Moodle ...
... need to provide for all inflectional forms of terms, as they can be of importance for annotation of lessons. This morphological expansion is realized by the use of lexical resources [6] and the Vebranka web service [7]. The user can select which of the aforementioned term types will be mapped into ...Ranka Stanković, Ivan Obradović, Olivera Kitanović, Ljiljana Kolonja. "Building Terminological Resources in an e-Learning Environment" in Proceedings of the Third International Conference on e-Learning, eLearning-2012, September 2012, Belgrade, Serbia, Belgrade : Belgrade Metropolitan University (2012)
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The interaction of organoselenium trans-palladium(II) complexes toward small-biomolecules and CT-DNA
Serija organoselenijum trans-paladijum(II) kompleksa 1 (bis(2-(fenilselanilmetil)oksolan)dihloropaladijum(II)), 2 (bis(2-(fenilselanilmetil)oksan)dihloropaladijum(II)) i 3 (bis(2) ,2-dimetil-3-(fenilselanil)oksan)dihloropaladijum(II)) su korišćeni za ispitivanje reaktivnosti ovog specifičnog tipa kompleksa prema različitim bio-molekulima. Ovaj sistem je od posebnog interesa jer se jako malo zna o supstitucionim reakcijam organoselenijum paladijum(II) kompleksa sa trans konfiguracijom. Zamena koordinovanog hlorida sa serijom malih bio-molekula (l-Met, l-His, l-Cis, GSH i 5′-GMP) proučavana je pod uslovima pseudo-prvog reda kao funkcija koncentracije nukleofila i temperature korišćenjem tehnika zaustavljenog toka. Rezultati za proučavane komplekse ukazuju da ...Vera M. Divac, Aleksandar Mijatović, Marina D. Kostić, Jovana Bogojeski. "The interaction of organoselenium trans-palladium(II) complexes toward small-biomolecules and CT-DNA" in Inorganica Chimica Acta, Elsevier BV (2017). https://doi.org/10.1016/j.ica.2017.07.012
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Comparative analysis of correlation coefficients in mineralogical and geophysical data from the mine tailing site “Rudnik” (Serbia)
Vesna Cvetkov, Filip Arnaut, Dragana Životić. "Comparative analysis of correlation coefficients in mineralogical and geophysical data from the mine tailing site “Rudnik” (Serbia)" in 5th Congress Geologists of the Republic of North Macedonia, Ohrid, 28-29. 10. 2024, Македонско геолошко друштво (2024)
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From DELA Based Dictionary to Leximirka Lexical Database
Biljana Lazić, Mihailo Škorić (2020)In this paper, we will present an approach in transforming Serbian language Morphological dictionaries from a DELA text format to a lexical database dubbed Leximirka. Considering the benefits of storing data within a database when compared to storing them in textual documents, we will outline some of the functionality that the database has made possible. We will also show how hand-made rules that use category labels lexical entries are marked with can be used to link lexical entries. ...... types of users covering a wide range of users. Those without a registered account can use it for searching, while registered users can access the man- agement and development interface of the Dictionary. Unregistered users can search the Leximirka lexicographic database by querying using Latin script. The ...
... “ljeto” (summer)). The pronunciation relation “Ek-Ijk” can be established only if the record containing the Iekavian entry is marked with “+Ijk” marker and the record containing the corresponding Ekavian entry has “+Ek” marker. This relation can be applied to various PoS. Several rules were defined in ...
... in order to establish it. In Ekavian dialect the reflection of the Old-Church Slavonic “Jat” is an “e”, while in Iekavian it can be “je”, “ije” or “i” which can also modify preceding phoneme: l+je → lje ; n+je → nje etc. For that reason rules are applied to Iekavian entries since the reflection of “jat” ...Biljana Lazić, Mihailo Škorić. "From DELA Based Dictionary to Leximirka Lexical Database" in Infotheca, Faculty of Philology, University of Belgrade (2020). https://doi.org/10.18485/infotheca.2019.19.2.4
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Speleo‐morphology and tectonic processes – What can be seen in slowly deforming regions?
Ana Mladenović, Jelena Ćalić (2022)There are a lot of methods used to determine tectonic process active in a region, and they vary depending on the purpose of the research. However, a number of them cannot be used in slowly deforming regions, because the effects of active tectonic process on the rocks in such regions could be negligible. This is especially true for the recently active tectonics in such regions, since most of the recently active tectonic structures never reach the surface. Because of ...Ana Mladenović, Jelena Ćalić. "Speleo‐morphology and tectonic processes – What can be seen in slowly deforming regions?" in 18th International Congress of Speleology, Savoie Mont Blanc, 24-31 July 2022, Postojna : International Union of Speleology (2022)
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Long-term planning methodology for improving wood biomass utilization
The insufficiently developed forest management system is often followed by undeveloped forest resources supply chain and insufficient institutional support. These cause inefficient usage of fuel-wood as well as huge amounts of unused forest residues. In order to achieve optimal and long-term sustainable utilisation of biomass, an original methodology based on the interaction of mathematical optimization and backcasting approach has been developed. Mathematical optimization is used for both generation and consideration of techno-economic parameters of the forest biomass supply chain. ...Vladimir Vukašinović, Dušan Gordić, Marija Živković, Davor Koncalović, Dubravka Živković. "Long-term planning methodology for improving wood biomass utilization" in Energy, Elsevier BV (2019). https://doi.org/10.1016/j.energy.2019.03.105
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Can the dynamics of a subducted slab account for the Upper Cretaceous magmatism in the Sava-Vardar Zone and Timok Magmatic Complex? A Numerical Modelling Approach
Nikola Stanković, Ana Mladenović, Dejan Prelević, Vesna Cvetkov, Vladica Cvetković. "Can the dynamics of a subducted slab account for the Upper Cretaceous magmatism in the Sava-Vardar Zone and Timok Magmatic Complex? A Numerical Modelling Approach" in 16th Alpine Workshop, European Geosciences Union (2024)
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English for Geology Students. 2
Lidija Beko (2023)... which they can be taught and arranged. Furthermore, we aimed to make the text and the space around it aesthetically pleasing from the very beginning, introducing decorative components wherever possible, as well as trying to confi- gure the chapters in such a manner that students can easily spot ...
... towards the bottom of the chamber. Such conditions can often produce deposits of apatite, magnetite and chromite; respectively the ores from which phosphorus, iron and chromium are derived. As notedin the chapter on igneous rocks, min- erals can be formed as a result of the intrusion of molten ...
... way that each chapter is independent, so that they could be taught even in a differ- ent order that the one offered in the book. Therefore, teachers can combine the previous textbook with this one, putting their own principles of clarity and coherence as a way in which they wish to teach the subject ...Lidija Beko. English for Geology Students. 2, Belgrade : The Faculty of Mining and Geology, 2023
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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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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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Development of A Business Intelligence Tool For Accident Analysis in Mines
... the age of the injured worker. Based on the first cube we can conclude that the number of injuries in the year 2011 was way over the average, and that the greatest number of injuries happened in the second quarter. From the second cube we can see that the majority of injured workers were of the age ...
... for a data survey and within this slot different dimensions that will be used for calculating the number of injuries can be defined in a quick and simple manner The BI model can offer important information for safety management but also allows different ways of presenting data. Figure 3 depicts ...
... by body parts. Due to the hierarchical structure of the RudOnto dictionary the analysis can be performed on several levels of detail. 5 Figure 2 The BI development environment Thus we can observe injuries on the arm, head, leg, or hull, or browse for a knee, feet or forearm injury ...Ljiljana Kolonja, Ranka Stanković, Ivan Obradović, Olivera Kitanović, Uroš Pantelić. "Development of A Business Intelligence Tool For Accident Analysis in Mines" in Proceedings of the 5th International Symposium Mining And Environmental Protection, June 10-13, 2015, Vrdnik, Serbia, Belgrade : Faculty of Mining and Geology (2015)