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Упит dcterms_subject_txt:CO2 capture systems

532 items

  • Critical disorder and critical magnetic field of the nonequilibrium athermal random-field Ising model in thin systems

    Svetislav Mijatović, Dragutin Jovković, Sanja Janićević, Đorđe Spasojević (2019)
    Изингов модел, критично понашање, танки системи

  • Nonequilibrium athermal random-field Ising model on hexagonal lattices

    Svetislav Mijatović, Dragutin Jovković, Đorđe Spasojević (2021)
    Изингов модел, хексагонална решетка

  • 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 ...
    ... ). The previous work on definition extraction can be classified as follows: 1) the rule-based approach with linguistic rules and templates that capture patterns to express term-definition relations; 2) the feature engineering approach relying on the statistical machine learning models with syntax ...
    ... from the second group and 13 for the definitions from the third group. When developing these models by means of local grammars with FSTs we tend to capture all types of definitions, namely descriptive, reference-based and synonym-based. The coverage of noun definitions in the SASA dictionary by the developed ...
    ... and they have mostly been fully recognized (from 91 to 100% depending on type). As expected, definitions of encyclopaedic entries are difficult to capture (only 26% of recognized definitions were fully recognized) and it is possible that quite a number of them were not recognized at all. Definitions ...

  • A comparison between ARIMA, LSTM, ARIMA-LSTM and SSA for cross-border rail freight traffic forecasting: the case of Alpine-Western Balkan Rail Freight Corridor

    Miloš Milenković, Miloš Gligorić, Nebojša Bojović, Zoran Gligorić (2023)
    železnica, prekogranični teretni saobraćaj, ARIMA, LSTM, SSA

  • Proizvodnja električne energije iz elektrana na ugalј i prateća emisija CO2: komparacija EU-27 i Srbije

    Aleksandar Madžarević, Predrag Jovančić, Stevan Đenadić, Filip Miletić, Miroslav Crnogorac (2023)
    Velike elektrane su i u trećoj deceniji 21. veka i dalјe odgovorne za više od polovine proizvodnje električne energije u Evropi. U svom radu pretežno koriste fosilna goriva, što rezultira emisijom zagađujućih materija u vazduh. Stoga, zahvalјujući direktivama EU, kao i poremećajima na tržištu, emisije uglјen-dioksida iz velikih postrojenja za sagorevanje u EU-27 intenzivno se smanjuju u poslednje dve decenije. Iako je upotreba uglјa, posebno u zemlјama Evropske unije, u stalnom padu, ima prostora za dodatno smanjenje. Autori su ...
    CO2, emisija, ugalј, termoelektrane, EU-27, Srbija

  • The preliminary selection of oil reservoir in Serbia for carbon dioxide injection and storage by a multicriteria decision-making approach: a case study

    Lola Tomić, Vesna Karović Maričić, Dušan Danilović (2021)
    geološko skladištenje CO2, naftna ležišta, Srbija, VIKOR, TOPSIS

  • A WebGIS Decision Support System for Management of Abandoned Mines

    Ranka Stanković, Nikola Vulović, Nikola Lilić, Ivan Obradović, Radule Tošović, Milica Pešić-Georgiadis (2016)
    ... Potential of Abandoned Underground Coal Mines: A Simple Methodology. Energies 2014, 7, 4241–4260. [CrossRef] 4. Abandoned Mines Hold Potential to Capture Wind Energy. Available online: http://www.nrri.umn.edu/ news/pumpedhydro.htm (accessed on 11 April 2015). 5. Tošović, R. Management in Modern Conditions ...
    ... results. Abbreviations The following abbreviations are used in this manuscript: WebGIS Web Geographical Information Systems AHP Analytic Hierarchy Process GIS Geographical Information Systems KML Keyhole Markup Language WMS Web Map Service WFS Web Feature Service CASE Computer-Aided Software Engineering ...
    ... energy generation. One of them is generation of heating and cooling energy from the natural heat 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 ...

  • Frequency and Length of Syllables in Serbian

    Marija Radojičić, Biljana Lazić, Sebastijan Kaplar, Ranka Stanković, Ivan Obradović, Ján Mačutek, Lívia Leššová (2019)
    Basic analyses of several properties of syllables (the rank-frequency distribution, the distribution of length, and the relation between length and frequency) in Serbian is presented. The syllabification algorithm used combines the maximum onset principle and the sonority hierarchy. Results indicate that syllables behave similarly to words as far as mathematical models are concerned, but values of parameters in models for syllables are quite different from those for words.
    frekvencije slogova, dužina slogova, srpski jezik
    ... ; however, according to Zec (1995, p.86), it „is not nearly as elaborate as some of the scales proposed in the literature, but is sufficient to capture the most common subdivisions of segments with respect to sonority”. To sum up, in this paper we divide words into syllables using the following ...
    ... Cambridge University Press. Comrie, B. (1996). Adaptations of the Cyrillic alphabet. In: Daniels, P.T., Bright, W. (eds.), The World’s Writing Systems: 700-726. Oxford: Oxford University Press. Crystal, D. (2008). A Dictionary of Linguistics and Phonetics. Oxford: Blackwell. Eddington, D., Treiman ...
    ... variation applied to grapheme frequencies. Journal of Quantitative Linguistics 23, 177-190. Köhler, R. (2005). Properties of lexical units and systems. In: Köhler, R., Altmann, G., Piotrowski, R.G. (eds.), Quantitative Linguistics. An International Handbook: 305-312. Berlin, New York: de Gruyter ...

  • Projecting short to medium-term effects of carbon emissions trading on Serbia's GDP

    Boban Pavlović, Nikola Trtica (2024)
    This paper presents an approach to assess the short to medium-term effects of the Emissions Trading System (ETS), an economic and climate policy instrument aimed at reducing greenhouse gas emissions, on GDP from the expenditure side. The analysis focuses on Serbia’s electricity sector, which relies heavily on lignite-based pro duction dominated by state-owned enterprises. The obtained projections suggest that in the short term, the introduction of an ETS may lead to slower GDP growth compared to official forecasts. However, ...
    ETS, BDP - rashodni pristup, cene električne energije
    ... methodology, which inevitably simplifies real-world complexities. A fundamental limitation of the expenditure side of GDP is its inability to capture certain non-market activities and values, such as household work, volunteer work, and environmental degradation. Also, the effects in other sectors ...
    ... certain variables remain relatively constant according to official projections. This constraint can limit the depth of the analysis and may not capture the full complexity of dynamic interactions within the economy. For a more detailed understanding of the effects, this methodology would need ...
    ... Of the total consumption by end-users, EPS sells 99.9% of electrical energy. The separation of operators of the transmission and distribution systems of electricity is executed through the Joint Stock Company “Elektromreža Srbije” (EMS) for the transmission of electricity, which is 100% state-owned ...

  • Pre-failure deformation monitoring as rockfall prediction tool

    Miloš Marjanović, Biljana Abolmasov, Zoran Berisavljević, Marko Pejić, Petko Vranić (2021)
    General Engineering
    ... increased the acquisition frequency after detecting a large part of one rock face with a massive tabular block slowly detaching. They managed to capture the acceleration stage of the rockslide and provided detailed analysis of pre-failure stages by comparing against numerous (weekly collected) sequences ...
    ... parameters and compensate for the lack of specific data [1]. Suspicious rock faces can be monitored for longer periods, using multiple monitoring systems (primarily Terrestrial Laser Scanning - TLS), seasonally or annually, or even in real-time. This provides systematic data for better understanding ...

  • Coupling of artificial intelligence methods in the development of hybrid intelligent systems

    Ranka Stanković, Ivan Obradović, Nikola Lilić (2001)
    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
    ... as an example of intercommunicating hybrid systems, and a system for the analysis of area air pollution load, with characteristics of both function-replacing and intercommunicating hybrid systems. Key words: hybrid intelligent systems, coupled systems, artificial intelligence methods, mining ap ...
    ... 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 ...
    ... Hybrid intelligent systems [1] are an attempt to solve these complex problems by coupling two or more AI methods, but also by integrating AI methods and conventional computer systems, such as database or spreadsheet applications. In this paper we present two hybrid intelligent systems which couple expert ...

  • Utilizing sewage wastewater heat in district heating systems in Serbia: effects on sustainability

    Marija Živković, Dejan Ivezić (2021)
    Transformation of the heating sector is recognized as being essential for ensuring reliable and afordable energy services provided with reduced consumption of energy sources and diminished impact on the environment and less import dependency. The possibility of utilizing energy sources that otherwise would be wasted needs to be considered and treated as a big advantage of district heating systems. Despite many advantages, sewage wastewater heat is still a mostly unused resource at the global level and a totally unused ...
    рекуперација топлоте из отпадних вода, систем даљинског грејања, топлотне пумпе, енергетске уштеде, емисија угљендиоксида, енергетска безбедност, Србија
    ... content of input to the system of the ith energy carrier Kpi Primary CO2 emission coefficient of the ith energy carrier Utilizing sewage wastewater heat in district heating systems in Serbia: effects on… 1 3 K ext Primary CO2 emission coefficient of externally supplied heat K el Carbon dioxide ...
    ... coefficient 328.3 kg MWh Table 2 Key performance indicators for the biggest DH systems in Serbia City/municipality % of households connected to DH Primary factor Import depend- ency Shannon– Wiener index CO2 emission coefficient (kg/ MWh) Belgrade 49.03 1.51 80.99 0.31 316.77 Novi Sad 75 ...
    ... content of the ith energy carrier input to heat producer, Kpi [ kg MWh ] Primary CO2 emission coefficient of the ith energy carrier, Q ext [MWh] Externally supplied heat, Kext [ kg MWh ] Primary CO2 emission coefficient of exter- nally supplied heat, Eel,aux[MWh] Auxiliary electricity ...

  • Towards more sustainable district heating systems in Serbia - Options and obstacles

    Marija Živković, Boban Pavlović, Dejan Ivezić, Miloš Tanasijević, Dejan Stojanović (2024)
    The major share of energy consumed in the building environment is dedicated to meeting heating needs, which makes this sector one of the key players in the transformation of the whole energy system. The accurate approach to the transition process assumes acting on both the demand and supply sides. Lately, the supply side has received more attention, as its transformation is one of the key steps of the energy transition process. District heating systems are recognized as substantial contributors ...
    energetska tranzicija, daljinsko grejanje, dekarbonizacija, obnovljivi izvori energije, prepreke, Srbija

  • Overwiew of In-Pit Crushing & Conveying Technology in Open Pit Mines

    Ali Nasirinezhad, Dejan Stevanović, Dragan Ignjatović, Petar Marković (2021)
    The conditions under which contemporary surface mining operations is carried out obviously becoming increasingly complex. In such complex conditions, the optimization of haulage systems as the technological phase with the largest share in the total operating costs, is very important from the aspect of achieving profitability of the mining project. In a large number of cases, the application of traditional haulage systems with trucks (as the most dominant type of haulage in open pit mines) does not lead to ...
    In Pit Crushing and Conveying, IPCC, open pit mining, haulage, optimization, costs saving

  • A tool for identifying the criticality in the disordered systems with metastable dynamics

    Svetislav Mijatović, Dragutin Jovković, Sanja Janićević, Stefan Graovac, Đorđe Spasojević (2021)
    Физика кондензоване материје

  • State and perspective of individual household heating in Serbia: A survey-based study

    Boban Pavlović, Dejan Ivezić, Marija Živković (2021)
    This paper presents the results of the household survey on individual household heating systems in Serbia. The survey was conducted in the period October to December 2020 with the participation of 1100 households with individual household heating systems. The information collected in the questionnaire can be separated into three main parts: basic household data, current heating system characteristics, and households’ perceptions and attitudes. The survey results provide unique and comprehensive information concerning individual household heating systems and the main ...
    Domaćinstva, Individualni sistemi grejanja, Korišćenje energije, Stavovi potrošača, Anketa, Srbija

  • Ventex: an expert system for mine ventilation systems analysis

    Nikola Lilić, Ranka Stanković, Ivan Obradović (1997)
    roblems relating to mine ventilation systems analysis are usually of a very complex nature. They involve the estimation of numerous interdependent parameters pertaining to the network status, ventilation status, ventilation system stability, air current losses, climate conditions, gas state, fire risk and dangerous dust pollution risk. The solution to these problems relies, to a great extent, on numerical methods. With the development of computer technology these methods were incorporated as numerical routes in software packages, such as the mine ...
    expert system, mine ventilation

  • Agent-based modeling as a support to an expert-based approach: Exploring individual heating systems transition

    Boban Pavlović, Marija Živković, Dejan Ivezić (2022)
    Expert-based energy scenarios are mainly developed following assumptions of experts and, in most cases, a limited number of stakeholders. Such an approach will provide satisfactory results in centrally managed energy sectors where further decisions could be envisaged relatively precisely (electricity production/distribution, district heating systems, etc.). The same approach will provide more uncertain outcomes of future energy structure in the household sector, where decisions related to consumption, selection of energy source, or application of specific technology are made by numerous ...
    Energetska tranzicija, Grejanje domaćinstava, Individualni sistemi grejanja, Energetsko planiranje, Integrisano energetsko planiranje, ABM, LEAP, Srbija

  • A Model for Determining Fuzzy Evaluations of Partial Indicators of Availability for High-Capacity Continuous Systems at Coal Open Pits Using a Neuro-Fuzzy Inference System

    Miljan Gomilanović, Miloš Tanasijević, Saša Stepanović, Filip Miletić (2023)
    This paper presents a model for determining fuzzy evaluations of partial indicators of the availability of continuous systems at coal open pits using a neuro-fuzzy inference system. The system itself is a combination of fuzzy logic and artificial neural networks. The system availability is divided into partial indicators. By combining the fuzzy logic and artificial neural networks, a model is obtained that has the ability to learn and uses expert judgment for that learning. This paper deals with the ...
    системи, континуални системи експлоатације (роторни багер-транспортер-дробилично постројење), рударство, расположивост, меко рачунарство, фази логика, ANN, ANFIS

  • Life Cycle Assessment of Individual Wood Biomass Heating Systems in Households

    Boban Pavlović, Dejan Ivezić, Marija Živković (2020)
    The use of solid fuels (wood biomass and coal) for heating of households continues to be common practice within European countries. Solid fuel combustion in households contributes more than 46% to total emissions of fine particulate matter. In this study, a life-cycle assessment (LCA) of firewood-based and pellet-based heating systems is performed. These two systems represent two different types of individual wood biomass heating systems. In the case of the firewood-based heating systems, it is analyzed a typical stove ...
    Grejanje, Analiza životnog ciklusa, Drvna biomasa, Individualni sistemi grejanja
    ... modern wood pellet-based furnace is analyzed. The objective of the LCA study is to assess the environmental performance of heating systems using GWP index, expressed through CO2-eq emissions. According to the results, wood pellet furnace could reduce emissions by 38% compared with the firewood stove. The ...
    ... planted one. Life Cycle Assessment of Individual wood Biomass Heating Systems in Households 433 Table 4. LCA of wood pellet-based HS - MBS PELLET [22], [23], [24] LC phase Contribution Amount [kg] GWP100 per kg [kg CO2-Eq/kg] GWP100 total [kgCO2-eq] Production Steel production 97 2 ...
    ... materials of HSs which represent 90% of complete HSs were analyzed. According to the total GWP 100, wood pellet HS could reduce CO2-eq emissions by 38% (814 kg CO2-eq) compared with firewood-based HS if the whole life cycle is analyzed. In the production phase of the LC, firewood-based HS has a ...