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1997 items

  • Available technological procedures for capturing CO2 in the industrial and power generation sectors

    Lola Tomić, Vesna Karović Maričić, Dušan Danilović, Branko Leković, Miroslav Crnogorac (2021)
    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 ...
    capturing CO2, power plants, CO2 capture systems, CO2 technologies
    ... dr.rgf.bg.ac.rs The Digital repository of The University of Belgrade Faculty of Mining and Geology archives faculty publications available in open access, as well as the employees' publications. - The Repository is available at: www.dr.rgf.bg.ac.rs 249 8th International Conference MINING ...
    ... and in advanced development [5]. Figure 2. CCS facilities in industrial sector in different stages of development [5] 251 2.2. Capturing after combustion In post-combustion systems, CO2 is captured from the flue gases produced by combustion of fossil fuels and biomass in air, ...
    ... capture is shown in Figure 4. Figure 4. Schematic description of a pre-combustion capture [17] 2.4. Capturing CO2 by oxy-fuel In oxy-fuel combustion, nearly pure oxygen (95-99%) is used for combustion in power plants instead of air, resulting in reduced amount of nitrogen in the flue gas mixture ...

  • The analysis of the geothermal energy capacity for power generation in Serbia

    Jana Stojković, Goran Marinković, Petar Papić, Mihailo Milivojević, Maja Todorović, Marina Ćuk (2013)
    Renewable Energy, Sustainability and the Environment
    ... silicate minerals in igneous rocks with the highest proportion of silica in the continental crust. Alkali feldspar and quartz also have large distribution; the two groups of minerals and plagioclases are tectosilicates [10]. Silicon occurs in elevated concentrations in geothermal water as well, for example ...
    ... Mining and Geology archives faculty publications available in open access, as well as the employees' publications. - The Repository is available at: www.dr.rgf.bg.ac.rs THE ANALYSIS OF THE GEOTHERMAL ENERGY CAPACITY FOR POWER GENERATION IN SERBIA by Jana S. STOJKOVI] a*, Goran H. MARINKOVI] b, Petar ...
    ... turbine in the conventional Rankine cycle electricity generation plant. After the vapourized binary fluid has passed and transmitted its energy to the turbine, it condenses and is fed back for use in the heat exchanger. Having passed through the heat exchanger, water is pumped back through the well into ...

  • Project BEWARE—Landslide Post-disaster Relief Activities for Local Communities in Serbia

    Biljana Abolmasov, Dobrica Damjanović, Miloš Marjanović, Ranka Stanković, Velizar Nikolić, Sandra Nedeljković, Žarko Petrović (2017)
    ... Mining and Geology archives faculty publications available in open access, as well as the employees' publications. - The Repository is available at: www.dr.rgf.bg.ac.rs Project BEWARE—Landslide Post-disaster Relief Activities for Local Communities in Serbia Biljana Abolmasov, Dobrica Damjanović, Miloš ...
    ... May 2014 events in Serbia, and prepare them to cope with catastrophic events in the future. This leads to more secure, better prepared and more resilient communities in western, central and eastern Serbia (Fig. 1), which were the most fragile parts of our country in May 2014. In this paper we are ...
    ... es affected byMay 2014 flooding and landslides episode in Serbia, and prepare them to cope with catastrophic events in the future. In this paper we are presenting main BEWARE project activities and results implemented on local communities in Serbia after May 2014 event. Keywords Landslides � Disaster ...

  • Towards Automatic Definition Extraction for Serbian

    Ranka Stanković, Cvetana Krstev, Rada Stijović, Mirjana Gočanin, Mihailo Škorić (2021)
    U radu su prikazani preliminarni rezultati automatske ekstrakcije kandidata za definicije rečnika iz nestrukturiranih tekstova na srpskom jeziku u cilju ubrzanja razvoja rečnika. Definicije u rečniku Srpske akademije nauka i umetnosti (SANU) korišćene su za modelovanje različitih tipova definicija (opisnih, gramatičkih, referentnih i sinonimskih) koje imaju različite sintaksičke i leksičke karakteristike. Korpus istraživanja sastoji se od 61.213 definicija imenica, koje su analizirane korišćenjem morfoloških e-rečnika i lokalnih gramatika implementiranih kao pretvarači konačnih stanja u paketu za obradu korpusa otvorenog ...
    ... dictionary, as well as other dictionaries. Definition extraction is a relevant task in different areas. In addition to dictionary writing, it is also important in the domain of question answering, namely responding to ‘What-is’ questions, as well as for ontology development. The context in which we will ...
    ... is semi-automatic creation of dictionaries. In this paper, we present an approach for definition modelling and extraction, relying on the existing Serbian dictionaries (morphological and descriptive), as well as the results of the preliminary experiments in automatic extraction of definitions from u ...
    ... dr.rgf.bg.ac.rs The Digital repository of The University of Belgrade Faculty of Mining and Geology archives faculty publications available in open access, as well as the employees' publications. - The Repository is available at: www.dr.rgf.bg.ac.rs Towards Automatic Definition Extraction for Serbian ...

  • Long-term planning methodology for improving wood biomass utilization

    Vladimir Vukašinović, Dušan Gordić, Marija Živković, Davor Koncalović, Dubravka Živković (2019)
    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. ...
    Long-term planning methodology, Forest biomass, MINLP, Backcasting

  • Influence of Initial Treatment on the Survival and Recurrence in Patients With Differentiated Thyroid Microcarcinoma

    Jasna Mihailović, Ljubomir Stefanović, Ranka Stanković (2013)
    ... disease in 32% of cases, whereas lymph node metastases were present in only 13.2%; however, in 1992, Hay et al reported that recurrences were influenced by the presence of metastatic lymph nodes as well as the extent of initial surgery.15 Distant metastases at presentation were observed in 1.5% of patients ...
    ... 19 The com- plexity of decision making in determining the optimal course of therapy is well summarized in a recent review: a physician ‘‘must make a patient specific decision in the setting of RAI ablation based upon his/her experience and review of the details in each case and continue to review the evidence ...
    ... of Mining and Geology archives faculty publications available in open access, as well as the employees' publications. - The Repository is available at: www.dr.rgf.bg.ac.rs Influence of Initial Treatment on the Survival and Recurrence in Patients With Differentiated Thyroid Microcarcinoma Jasna Mihailovic ...

  • Increasing the Local Road Network Resilience from Natural Hazards in Municipalities in Serbia

    Biljana Abolmasov, Miloš Marjanović, Ranka Stanković, Uroš Đurić, Nikola Vulović (2024)
    lokalni putevi, prirodni hazardi, otpornost na klimatske promene, MaPLoRds

  • Managing mining project documentation using human language technology

    Aleksandra Tomašević, Ranka Stanković, Miloš Utvić, Ivan Obradović, Božo Kolonja (2018)
    Purpose: This paper aims to develop a system, which would enable efficient management and exploitation of documentation in electronic form, related to mining projects, with information retrieval and information extraction (IE) features, using various language resources and natural language processing. Design/methodology/approach: The system is designed to integrate textual, lexical, semantic and terminological resources, enabling advanced document search and extraction of information. These resources are integrated with a set of Web services and applications, for different user profiles and use-cases. Findings: The ...
    Digital libraries, Information retrieval, Data mining, Human language technologies, Project documentation

  • WS4LR - a Worksation for Lexical Resources

    Cvetana Krstev, Ranka Stanković, Duško Vitas, Ivan Obradović (2006)
    Lexical Resources, Wordnet, Serbian
    ... class, as well as the list of grammatical categories of the form that appears in the compound lemma. For example, in the compound turska kafa (Engl. Turkish coffee), the lemma for the constituent form turska is turski. The form of this adjective in the compound lemma is inflected in order to agree ...
    ... manipulating each particular resource as well as several resources simultaneously. The paper is organized as follows: in section 2 we describe the lexical resources that can be handled by WS4LR, in section 3 we present the WS4LR modules and their functions, in section 4 some software consideration ...
    ... usually constructed in two main steps: in the first step, the texts to be aligned are segmented into equivalent units, and in the second step the correspondence between these units is established. The equivalent units are usually sentences, but the units can be larger, as well as smaller. The standard ...

  • Numerical Models of Debris Flows with Entrainment Analysis-Case Studies from the Republic of Serbia

    Jelka Krušić , Biljana Abolmasov, Miloš Marjanović (2021)
    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 ...
    tecišta, zadržavanje nanosa, RAMMS, validacija

  • The Nooj System as Module within an Integrated Language Processing Environment

    Ranka Stanković, Duško Vitas, Cvetana Krstev (2008)
    NooJ, electronic dictionary, lexical resources
    ... enables the exploitation of language resources both in Cyrillic and Latin alphabet, as well as in a special encoding, that uses the ASCII character set and that can be unambiguously transformed into Serbian Latin or Serbian Cyrillic alphabet. In that special encoding, for example, “sx” is used as ...
    ... of NooJ the available resources have been expanded by a conversion of all Intex DELAS dictionaries into NooJ dictionaries, in the original, ASCII format as well as in the Latin and Cyrillic version. WS4LR offers to the user the option to apply the transformation only to a part of the file, ...
    ... organized in modular fashion, in several sub-dictionaries as separate files. Without going into details of dictionary management, we will just point out that the dictionary management module enables the user to modify or delete all the information attached to a lemma, or the lemma itself, as well as to ...

  • Classification of Terms on a Positive-Negative Feelings Polarity Scale Based on Emoticons

    Mihailo Škorić (2017)
    The goal of this paper is to draw attention to the possibility of using emoticon-riddled text on the web in language-neutral sentiment analysis. It introduces several innovations in the existing framework of research and tests their effectiveness. It also presents a software tool especially made for that purpose, explains how it builds a database with sentimental value of terms and offers the user manual. Finally, it presents a software tool that tests the new database and gives some examples ...
    data mining, information extraction, emotions, text on the web
    ... refers to. It can be used in different ways in social and demographic research to quickly and efficiently collect large amounts of information. Developing intelligent systems that work with information: – Information retrieval: retrieval of specific information in the text, as well as finding information ...
    ... dr.rgf.bg.ac.rs The Digital repository of The University of Belgrade Faculty of Mining and Geology archives faculty publications available in open access, as well as the employees' publications. - The Repository is available at: www.dr.rgf.bg.ac.rs Scientific paper Classification of Terms on a Po ...
    ... endent, the system would be language-independent as well. If it turns out to be valid, this method could allow machine learning the usage of huge corpus of texts that are pre-labeled with determiners. 1.1 Review of their former similar studies In 2005 a series of experiments with the classification ...

  • Application of Project Management Process on Environmental Management System Improvement in Mining-Energy Complexes

    Jelena Malenović Nikolić, Dejan Vasović , Ivana Filipović , Stevan Mušicki, Ivica Ristović (2016)
    menadžment, rudrastvo i energetski kompleksi, okruženje, održivi razvoj, mrežno planiranje
    ... efficiency of implemented environmental protection measures. The advantage of the presented methodology lies in the comprehensive view of the effects of mining and energy complex operations as well as in the proposal to resolve the existing issues through the realization of management goals and management ...
    ... complex impact on the health and mortality of the population of the surrounding populated areas [37]. 4. Conclusions Increased interest in environmental quality, as well as obligations arising from the EU accession process (particularly derived from the Chapter 27: Environment) impose trend of responsible ...
    ... evaluation of environmental performance level of mining and energy complexes, as well as design of advanced programs of environmental management system improvement in a broader and narrower context and on different spatial and temporal levels. The proposed project management project is based on a realistic ...

  • Pre-failure deformation monitoring as rockfall prediction tool

    Miloš Marjanović, Biljana Abolmasov, Zoran Berisavljević, Marko Pejić, Petko Vranić (2021)
    General Engineering
    ... distribution were reported in [7,8]. One set of bedding (orientation 39/44°) and two conjugated joint sets (orientation 187/62° and 148/79°) were established, appointing to the block and wedge failure potential. Rock block size and volumes (0.5-2.7 m3) were reported in [9], as well as the first monitoring ...
    ... epochs, as well as in respect to the final situation, (2019). It is safe to conclude that the slope material exhibits expected detachment mechanism, which fits into the progressive failure along developing joint concept, while the general retreat of the fallen rock mass is expectedly in the upslope ...
    ... dr.rgf.bg.ac.rs The Digital repository of The University of Belgrade Faculty of Mining and Geology archives faculty publications available in open access, as well as the employees' publications. - The Repository is available at: www.dr.rgf.bg.ac.rs IOP Conference Series: Earth and Environmental Science ...

  • Evaluation And Perspectives Of Underground Coal Mines In Serbia

    Vladimir Milisavljević, Milena Lekić, Ivica Ristović, Vojin Čokorilo, Aleksandar Cvjetić (2017)
    ... of Mining and Geology archives faculty publications available in open access, as well as the employees' publications. - The Repository is available at: www.dr.rgf.bg.ac.rs EVALUATION AND PERSPECTIVES OF UNDERGROUND COAL MINES IN SERBIA Vladimir Milisavljević1, Milena Lekić1, Ivica Ristović1 ...
    ... ranged from 1 to 5 in relation to actual value of parameter or parameters. Due to restricted number of pages, scores of selected criteria required for AHP are given in Table 2. To provide more complete picture, coal productions achieved in period 2010-2015 in these mines are given in Table 3. Table ...
    ... one of the major coal producers in Europe, with over 38 Mt of coal per year. But most of this production is achieved in lignite open cast mines, which in 2016 produced 37.6 million tonnes [1]. On the other hand, combined production of all underground coal mines in Public Company for Underground ...

  • Debris-flow Susceptibility Assessment in Flow-R: Ribnica River Case Study

    Ksenija Micić, Miloš Marjanović, Biljana Abolmasov (2024)
    Debris flows are among the most dangerous erosional geohazards due to the fast rate of movement and long runout zones. Even though the initiation can be triggered in mountainous areas, inhabited and with steep slopes, their propagation and deposition can endanger not only buildings and infrastructure in the urbanized areas, but also threaten human lives. As these initiation areas usually represent unattainable terrains with rapid vegetation cover development, field observations and aerial photo analysis become high-demanding tasks. Consequently, medium-to-regional ...
    tečenje drobine, Flow-R, procena podložnosti, empirijski model

  • Application of a Method for Intelligent Multi-Criteria Analysis of the Environmental Impact of Tailing Ponds in Northern Kosovo and Metohija

    Gordana Milentijević, Blagoje Nedeljković, Milena Lekić, Zoran Nikić, Ivica Ristović, Jelena Đokić (2016)
    flotacijska jalovišta, životna sredina, višekriterijumska analiza, ekologija, Trepča
    ... faculty publications available in open access, as well as the employees' publications. - The Repository is available at: www.dr.rgf.bg.ac.rs energies Article Application of a Method for Intelligent Multi-Criteria Analysis of the Environmental Impact of Tailing Ponds in Northern Kosovo and Metohija ...
    ... drainage systems in the tailings. The water bodies from the area as well as those from remote areas are highly endangered by the Energies 2016, 9, 935 3 of 18 leaching contamination from the tailings. The characteristics of the analyzed flotation tailing waste deposits are shown in Table 1. ● đ ...
    ... material (chemical, quantities and other), elements with special value in their environments (natural rarities, archaeological and religious sites, etc.), technical and sociological aspects as well as many others are included in the assessment of the tailing ponds’ impact on the surrounding ecosystem ...

  • Towards Semantic Interoperability: Parallel Corpora as Linked Data Incorporating Named Entity Linking

    Ranka Stanković, Milica Ikonić Nešić, Olja Perisic, Mihailo Škorić, Olivera Kitanović (2024)
    U radu se prikazuju rezultati istraživanja vezanih za pripremu paralelnih korpusa, fokusirajući se na transformaciju u RDF grafove koristeći NLP Interchange Format (NIF) za lingvističku anotaciju. Pružamo pregled paralelnog korpusa koji je korišćen u ovom studijskom slučaju, kao i proces označavanja delova govora, lematizacije i prepoznavanja imenovanih entiteta (NER). Zatim opisujemo povezivanje imenovanih entiteta (NEL), konverziju podataka u RDF, i uključivanje NIF anotacija. Proizvedene NIF datoteke su evaluirane kroz istraživanje triplestore-a korišćenjem SPARQL upita. Na kraju, razmatra se povezivanje Linked ...
    paralelni korpusi, povezivanje imenovanih entiteta, prepoznavanje imenovanih entiteta, NER, NEL, povezani podaci, NIF, Vikipodaci

  • Serbian NER&Beyond: The Archaic and the Modern Intertwinned

    Branislava Šandrih Todorović, Cvetana Krstev, Ranka Stanković, Milica Ikonić Nešić (2021)
    U ovom radu predstavljamo srpski književni korpus koji se razvija pod okriljem COST Akcije „Distant Reading for European Literary History” CA16204. Koristeći ovaj korpus romana napisanih pre više od jednog veka, razvili smo i učinili javno dostupnim Sistem za prepoznavanje imenovanih entiteta (NER) obučen da prepozna 7 različitih tipova imenovanih entiteta, sa konvolucionom neuronskom mrežom (CNN), koja ima F1 rezultat od ≈91% na test skupu podataka. Ovaj model je dalje ocenjen na posebnom skupu podataka za evaluaciju. Završavamo poređenje ...
    ... results shown in Figure 3 (upper part) and Table 5, it becomes obvious that SrpCNNER does not perform so well on un- seen texts. In order to understand the reasons for that, we observed each and single case in isolation, which brought us to certain findings. SrpCNNER performed rather well in re- cognizing ...
    ... Belgrade Faculty of Mining and Geology archives faculty publications available in open access, as well as the employees' publications. - The Repository is available at: www.dr.rgf.bg.ac.rs Proceedings of Recent Advances in Natural Language Processing, pages 1252–1260 Sep 1–3, 2021. https://doi.org/10 ...
    ... new tools, combined into a web platform NER&Beyond.2 Although NER systems in general were de- veloped mostly for newspaper and similar te- xts, there were some endeavours to produce functional systems for literary texts as well. Enrichment of French Renaissance texts with proper names (Maurel et al., ...

  • The Importance of Geotechnical Investigations for the Construction of Transfer Station „Prelići“ on Landfill in Cacak – Serbia

    Dragoslav Rakić, Irena Basarić, Jovana Janković, Tina Đurić (2019)
    For the purpose of the facilities construction within the transfer station „Prelici“ in Cacak, specific geotechnical investigations were carried out based on which the technological project with the facilities schedule was developed. Significant deviations in relation to the presented results were determined during earthworks, so the additional geotechnical investigation works were carried out. Since the new investigation works have determined a different cross section of the terrain, it was proposed to move the planned facilities which led to the ...
    landfill, geotechnical investigations, transfer station
    ... All rights reserved / www.cisapublisher.com machinery. In the bottom part, the waste is saturated with liquid waste materials and eulath (caused by the infiltration of the flowing waters in the terrain), as well as by the occasional rise in the groundwater level. Figure 3. Characteristic ...
    ... dr.rgf.bg.ac.rs The Digital repository of The University of Belgrade Faculty of Mining and Geology archives faculty publications available in open access, as well as the employees' publications. - The Repository is available at: www.dr.rgf.bg.ac.rs Proceedings SARDINIA2019. © 2019 CISA Publisher ...
    ... 2011). In this regard, the modern technological solutions are proposed which are usually consisted of several parts, such as: the area for selection of municipal waste (primary and secondary), area for use and processing of unselected waste (biological treatments, thermal treatments) as well as area ...