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Упит dcterms_subject_txt:continuous part of combined system (CCS)

2791 items

  • A Model for Determining the Dependability of Continuous Subsystems in Coal Mines Using the Fuzzy Logic Approach

    Nikola Stanić, Miljan Gomilanović, Petar Marković, Daniel Krzanović, Aleksandar Doderović, Saša Stepanović (2024)
    This study presents a unique model for assessing the dependability of continuous parts of combined systems in open-pit mining through the application of fuzzy logic. Continuous sub-systems as part of the combined system of coal exploitation in surface mines have the basic function of ensuring safe operation, high capacity with high reliability, and low costs. These subsystems are usually part of the thermal power plant’s coal supply system and ensure stable fuel supply. The model integrates various independent partial ...
    fuzzy logic, max-min composition, continuous part of combined system (CCS), open pit, mining, dependability

  • 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
    ... n through pipeline system and injection in different geological formations [2,3]. Capturing CO2 is the most expensive phase in the carbon capture and storage process and it accounts for approximately 75 % of overall costs in the CCS system [4]. There are a large number of CCS projects worldwide ...
    ... varius stages of development. According to the Global CCS Institute, in 2020 there were 65 commercial CCS facilities. Currently, there are 26 large- scale CCS facilities in operation, with capture capacity of 40 Mt of CO2 per year [5]. In spite of the growing number of CCS facilities, CCS application ...
    ... natural gas instead of coal, increasing the energy efficiency, and separating CO2 after production using CCS technology which is one of the leading solutions. Capturing CO2 is the most expensive phase in CCS process and it accounts for approximately 75% of overall costs. The selection of CO2 capture systems ...

  • Analysis Of the Process Of Carbon Capture Utilization And Storage In Underground Reservoirs

    John Nyame (2024)
    The importance of mitigating the effects of global climate change has necessitated an in-depth exploration of innovative strategies to reduce carbon dioxide (CO2) emissions. Among these strategies, Carbon Capture, Utilization, and Storage (CCUS) has emerged as a promising and transformative solution. This master thesis delves into the diverse realm of CCUS processes, aiming to unravel the positives challenges, and opportunities within this dynamic field. The analysis begins with a systematic examination of carbon capture technologies, encompassing post-combustion, pre-combustion, and oxy-fuel combustion ...
    Carbon Capture, Utilization and Storage
    ... In All Days, Proceedings of the SPE Europec/EKAGE Annual Conference, Madrid, Spain, 13—16 June 2005; OnePetro: Richardson, TX, USA, 2005 [72] Jeon, S. et al.: Compressor selection methods for multi-stage re-liquefaction system of liquefied CO2 transport ship for CCS. 2015, Volume 83, Pages 360-367 ...
    ... to be needed as there are large uncertainties when it comes to the timeframe of implementation of CCS in specific plants and uncertainties of storage capacities [88]. Large-scale CCS is likely to result in the linking of source clusters with sink clusters by trunk lines (backbone), in combination ...
    ... injection system, the exergy expenditure is divided into two parts. One part refers to the work supplied to the system, and the work is a type of perfect exergy, which can be utilized fully. The other part refers to the difference between the exergy entering and the exergy leaving the system with respect ...

  • Synergy between the mineral deposit exploration and geothermal resources assessment on the example of "Valjevo" boron and lithium deposit in Serbia

    Nebojša Atanacković, Vladimir Živanović, Ana Vranješ, Sava Magazinović, Marinko Toljić, Ana Arifović, Branislav Potić (2023)
    Exploration of mineral deposits involves a collection of vast data sets on geological characteristics of the area. These data can largely contribute to the assessment of the geothermal potential, which can lead to an increase in the share of geothermal resources in the energy mix of the extractive industry and the local community. On the example of the "Valjevo" B-Li deposit, data on structural settings and previous hydrogeological investigations were combined with the results of resource drilling and geophysical ...
    Geothermal assessment, Mineral deposit exploration, Geothermal potential, Serbia
    ... 2. Structural and geological interpretation of the basement of the part of "Valjevo-Mionica" Neogene basin 4.2. Geothermal system According to the geological settings of the terrain and the results of the analyzed parameters, the geothermal system of the Valjevo-Mionica basin belongs to the conductive ...
    ... high compared to the 0.03 "C/m adopted as the average for this part of Europe [3]. The Neogene geothermal gradient map is combined with the map of the thickness of the Neogene sediment cover to estimate temperatures at the upper boundary of the reservoir. Since limited data exist on the temperature ...
    ... Locally, there are minor occurrences of Lower Triassic sediments in the cores of the anticlinal folds. From the periphery of the basin, the Neogene's basal part descends deeper towards the axial part of the basin structure. The central part of the depression extends in the general direction ENE-WSW ...

  • The Fuzzy–AHP Synthesis Model for Energy Security Assessment of the Serbian Natural Gas Sector

    Aleksandar R. Madžarević, Dejan D. Ivezić, Miloš L. Tanasijević, Marija A. Živković (2020)
    Natural gas is used for the production of almost 20% of total energy today. The natural gas security of the Republic of Serbia is an urgent strategic, political and security issue. Serbia is one of the most vulnerable countries in Southeast Europe, because it only has one supply route. This study is a contribution to efforts to better understand the factors affecting energy security through the implementation of a new methodology based on the fuzzy–AHP synthesis model for measuring ...
    energetska bezbednost, prirodni gas, fazi AHP, AHP višekriterijumska analiza, fazi teorija
    ... representation of energy security (ES) for combined scenario 1 (SC1). For this scenario, the value of energy security is for the most part in the area of moderate ES, with a slight shift to the left towards a field that describes dominantly moderate and lower energy security. • Combined scenario 2 (SC2) ...
    ... (million m3 per day), LGI—daily capacity of the largest gas supply infrastructure (million m3 per day). Based on the characteristics of combined scenarios and list a of infrastructure project Table 17 shows N-1 system availability index for different combination of scenarios and Table 18 shows specific ...
    ... as an independent integral part of a more general term [10]. Energy security determines the continuous availability of energy in various forms, at affordable prices and in sufficient quantities [11]. Energy security is a parameter whose specificity lies in the influence of many factors, so it is not ...

  • 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 ...

  • Production information system of the Pljevlja coal mine

    Božo Kolonja, Ranka Stanković, Filip Vuković (2018)

  • Design of the Opencast Coal Mine Drmno Dewatering System

    Vladimir Pavlović, Dušan Polomčić, Tomislav Šubaranović (2014)
    Development of mining in the opencast mine Drmno from Kostolac basin in Serbia is carried out in the increasingly complex geological and hydro geological conditions with the decline of the coal seams to the alluvial part of Europe's largest river Danube. Greater depth and inflow of groundwater significantly increase costs for dewatering facilities construction with the requirement for optimizing of this more and more important surface mining process. Making decision on screen construction in the opencast mine with redesign ...
    dewatering system, groundwater, hydrodynamic model, dewatering wells, screen, reliability, environmental effects.

  • Determining seismic hazard in slowly deforming region: Can we gather enough information from karst caves?

    Ана Младеновић, Јелена Ћалић (2021)
    ... sets of data have to be combined in order to gather necessary information needed todetermine seismic hazard for a given area. One of such regions of low seismicity and very slow deformation is the region of Carpatho-Balkanorogen, situated in Eastern Serbia. This orogen represents the western part of the ...
    ... itssoutheastern part to the Balkan massif in Bulgaria. In its central part, in Eastern Serbia, Carpatho-Balkanides are made up of a system of east-vergent nappes, that have been formed in EarlyCretaceous and were multiply activated during their geological history. This activity led to theformation of faults that ...
    ... that are favorably oriented in respect to the main thrust system. It is suspectedthat some of these fault systems are also active in recent times. Relatively complex geological structure and existence of a large number of rock discontinuities, aswell as relatively long time during which these geological ...

  • 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

  • Development Of The Serbian Geological Resources Portal

    Ranka Stanković, Jelena Prodanović, Olivera Kitanović, Velizar Nikolić (2011)
    ... This part of the portal was Development of the Serbian Geological Resources Portal 63 7 Several projects financed by MEMSP. Geologic Institute od Serbia: Geo-referencing of scanned pages, cropping and linking into the national coordinate system of the ...
    ... possibility of online database search. This paper presents tech- nologies and tools used to develop the portal for geological resources of Serbia, which were created as part of a project funded by the Ministry of Environment, Mining and Spatial Planning (MEMSP). The cartographic part of the portal was ...
    ... enables zooming in real-time, without loss of image quality. Multimedia part of the web portal The part of the web portal pertaining to geoheritage and geodiversity of North-Western Serbia represents the Adriatic geotectonic unit through different cycles of geological history, in the time span between ...

  • Hyperpycnites within the Devonian-Carboniferous flysch of the Carpatho-Balkanides (Kostadinovica, eastern Serbia)

    Miloš Radonjić (2020)
    This study presents new discoveries of vascular plants and the trace fossil Dictyodora liebeana (GEINITZ) from the Devonian–Carboniferous Kučaj-Zvonce flysch of the Carpatho-Balkanides and the implications of this fossil association for its sedimentary setting. The occurrence of the described plant debris in a deep-marine environment indicates the presence of hyperpycnites within the siliciclastic turbidites exposed at the Kostadinovica locality. The sedimentological data and the characteristics of the fossil material support the proposed model in which the sediment was at ...
    Mississippian flora, Dictyodora liebeana (GEINITZ), hyperpycnites, Kučaj-Zvonce flysch, Carpatho-Balkanides
    ... the detrital components combined with pa- laeogeographical information. A further aim should be a recon- struction of the hinterland area of the system which is also lacking at present. Although the framework of the Devonian/Carbonifer- ous flysch systems of SE Europe was developed and compared at regional ...
    ... similar Mississip- pian floras of Europe. Based on the studied sedimentary features and the position and mode of preservation of the palaeontological material, the Ko- stadinovica succession is interpreted as an distal part of the tur- bidite system with the occurrence of hyperpycnites. The detailed ...
    ... séan) as a part of the circum Pannonian flysch system (EBNER et al., 2008). The Kučaj-Zvonce flysch was interpreted as a retro- grading system of deposits of the slope to mid-fan and the outer- fan to basin tract (KRSTIĆ et al., 2004). The Bouma divisions were used for the description of the sedimentary ...

  • Extraction of Bilingual Terminology Using Graphs, Dictionaries and GIZA++

    Branislava Šandrih, Ranka Stanković (2020)
    U nauci, industriji i mnogim istraživačkim oblastima, terminologija se brzo razvija. Najčešće, jezik koji je „lingua franca“ za većinu ovih oblasti je engleski. Kao posledica toga, za mnoga polja termini domena su koncipirani na engleskom, a kasnije se prevode na druge jezike. U ovom radu predstavljamo pristup za automatsko izdvajanje dvojezične terminologije za englesko-srpski jezički par koji se oslanja na usaglašeni dvojezični korpus domena, ekstraktor terminologije za ciljni jezik i alat za usklađivanje delova. Ispitujemo performanse metode na domenu ...
    ekstrakcija terminologije, validacija terminologije, GIZA++, grafovi, Unitex, klasifikacija teksta
    ... target language part of the aligned chunks (chunk); (b) on the target language part of the aligned input sentences (text). Infotheca Vol. 19, No. 2, December 2019 129 Šandrih B., Stanković R., “Extraction of Bilingual . . . ”, pp. 119–138 The summary of results obtained by our system for 8 experiment ...
    ... “Extraction of Bilingual . . . ”, pp. 119–138 This list can be either an external resource from the same domain or obtained from the text. The only system developed specifically for the extraction of MWTs from Serbian texts is a part of LeXimir (Stanković et al., 2016), a tool for management of lexical ...
    ... chunk) or from the target language part of the aligned input corpus (for text). Table 1. Numerical data that describes the results of the term extraction system Experiment A B C I II III IV L I S -d ic t LIS-corp chunk 1 7 ,8 8 9 240,253 26,719 6,646 1,141 647 173 text 49,632 1,531 770 240 LIS-corp+ ...

  • Why classical sequence stratigraphy doesn't work in Pannonian basin?

    Dejan Radivojević (2018)
    basen iza ostrvskog luka, detačment, miocen, Panonski basen, riftogeneza, sekvenciona stratigrafija
    ... formations. The base of  final  sequence  (P4)  is mostly made of continuous  high frequency reflections. Unlike bottom units in this sequence there is no progradation present, while  the  seismic  reflections  toward  top  become more  discontinuous.  The  lower  sequence  part  could  be   178 ...
    ... filled the biggest part of the rest of accommodation space.  The postrift Tertiary sediments are represented with prograding delta system. The delta bottom‐ sets (S4), foresets (F1) and topsets (F2) facies are marked at figure 1. The facies S4 and F1 are separated  with  base  of  slope, while  F1  ...
    ... on of lower intensity while others passed through the multi‐phase rifting. The oldest rift  climax phase is of Early Miocene, while youngest is Early Pontian (Matenco and Radivojević, 2012).   Above pre‐rift sequence (S1) there is rift initiation system tract (S2) which is common in deeper  part of ...

  • Hydrochemical features and their controlling factors in the Kucaj-Beljanica Massif, Serbia

    Fen Huang, Ljiljana Vasic, Xia Wu, Jianhua Cao, Saša Milanovic (2019)
    Earth-Surface Processes, Geology, Pollution, Soil Science, Water Science and Technology, Environmental Chemistry, Global and Planetary Change

  • Advantages and challenges in presenting mathematical content using EDX platform

    Marija Radojičić, Ivan Obradović, Ranka Stanković, Olivera Kitanović, Roberto Linzalone (2016)
    ... industry [5]. The idea of the project was to establish a system for creating, publishing, maintaining and searching of OERs both from academic institutions and enterprises. An important part of this system is the Open edX platform, which was adapted for the needs of BAEKTEL project (edX-BAEKTEL ...
    ... a theoretical part and a part with exercises. The theoretical part contains basic axioms, theorems and formulae related to a specific mathematical topic. Usually that part of the course is static and it does not require any interaction between user and course. It is the part of the course where ...
    ... can be combined in creating mathematical learning content, such as using the Termi application for mathematical terms. Some challenges in creating mathematical courses within the edX-BAEKTEL platform were pointed out. The lack of engines and resources for deeper analysis and search of mathematical ...

  • Adaptive neuro-fuzzy prediction of operation of the bucket wheel drive based on wear of cutting elements

    Filip Miletić, Predrag D. Jovančić, Milos Milovančević, Dragan Ignjatović (2020)
    The capacity of the rotor excavator depends largely on the operation of the subsystem for digging. There is a great contribution to the correct and sharp teeth when the capacity is the highest. In the function of time, the teeth become clogged due to abrasive wear, or changes in their geometric shape. To analyze the bucket wheel drive in depend on wear of the cutting elements in this study adaptive neuro fuzzy inference system (ANFIS) approach was implemented. ANFIS ...
    Pogon rotornog točka, habanje, rezni elementi, ANFIS

  • A business intelligence approach to mine safety management

    Ljiljana Kolonja, Ranka Stanković, Ivan Obradović, Olivera Kitanović, Dejan Stevanović, Marija Radojičić (2016)
    ... n and analysis. The number of injuries, which represents a measure, is the central value of the cube that is analyzed. In our system, dimensions that are structural attributes of the cube, grouping data of similar category, are: type of injury, body part, severity of injury, worker’s age and q ...
    ... with the aim of raising the level of safety equipment for body parts that are most frequently injured. Figure 4. Representation of injuries by body part and body side Figure 5 shows the percentage of the total number of injuries in the database for a selected period by days of the week. One ...
    ... most important parts are the classification of external causes of injury, injury severity assessment and specification of part or parts of the body that were injured. 3.2 Methodology for data analysis Online analytical processing is a capability of management, decision support and executive ...

  • Improvement of geodatabase queries within GeolISS

    Ranka Stanković (2008)
    ... greatly enhances the potential of manipulating each particular resource as well as several resources simultaneously [9]. This tool has already been successfully used for various language processing related tasks including query expansion [10]. A part of the WS4LR system is the web application WS4QE ...
    ... for visualization within ArcMap (part of ESRI ArcGIS), with a list of selected layers of spatial data on the left-hand side and the corresponding map on the right-hand side. In the top part of the snapshot is the GeolISS toolbar that enables the selection of appropriate data management tools. The ...
    ... Geological information system of Serbia (GeolISS) represents a repository for digital archiving, query, retrieving, analysis and visualization of geological data. The development and implementation of the GeolISS is managed by a team from the Faculty of Mining and Geology of Belgrade University and ...

  • 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
    ... significantly smaller for the same number of iterations when combined GA and BP are used for NN training. This justifies the coupling of GA and NN for obtaining a more reliable prediction. Further extension of this system through an expert system which, on basis of the results obtained by the neural ...
    ... s. The VENTEX [2] system was developed as a knowledge-based (symbolic) upgrade of the SimVent numerical package and it thus belongs to the category of coupled numerical and symbolic systems. The numerical part consists of SimVent simulation routines and the symbolic part of the mine ventilation ...
    ... given. Two case studies of hybrid systems used in mining engineering are presented: a system for planing and analysis of mine ventilation, as an example of intercommunicating hybrid systems, and a system for the analysis of area air pollution load, with characteristics of both function-replacing ...