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Упит dcterms_subject_txt:equipment selection

240 items

  • Multi-Criteria Approach for Selecting Optimal Dozer Type in Open-Cast Coal Mining

    Ivan Janković, Stevan Đenadić , Dragan Ignjatović , Predrag Jovančić , Tomislav Šubaranović, Ivica Ristović (2019)
    Analitički hijererhijski proces (AHP), dozeri, eksploatacija uglja, površinski kopovi
    ... don’t consist solely of investing in new equipment. Considerable higher costs emerge with inadequate equipment selection, constant failures, inability to complete assignments and standstill. To minimize the biased evaluation factor, this paper used the AHP method. The main purpose of the analysis is ...
    ... consist solely of investing in new equipment. Considerable higher costs emerge with inadequate equipment selection, constant failures, inability to complete assignments and standstill. To minimize the biased evaluation factor, this paper used the AHP method. The main purpose of the analysis is to define ...
    ... 80-7099-510-6. 12. Ignjatovic, D.; Ristovic, I.; Stojakovic, M. The Methodology of the Selection of Auxiliary Mechanisation for the Open Pit Mines of Llignite. In Proceedings of the Mine Planning and Equipment Selection, Athens, Greece, 6–9 November 2000; pp. 577–581. 13. Nichols, H.; Day, D. Moving the ...

  • Multivarijabilni modeli upravljanja u rudarstvu

    Marjan M. Hudej (2014-02-03)
    osetljivost i rizik. Više pobuda generiše ovakvu atribuciju. Prva je, multivarijabilnostambijentalnih uslova i funkcionalna i strukturna složenost rudarskih sistema (čovek -priroda (radna sredina) - mašina – okruženje); Druga se odnosi na ne postojanje opštenaučne saglasnosti oko ocene pogodnosti modela za podršku odlučivanju i upravljanje.Treća, ako bi saglasnost i postojala, nije sigurno da bi raspoloživi modeli, metode i taktike,dale ekvivalentne rezultate za iste rudničke uslove. Četvrta, sistemske nauke još uveknemaju opšte prihvaćen i u praksi primenljiv algoritam izbora najboljeg rešenja ...
    rudarstvo, odlučivanje, upravljanje, model,multivarijabilno, multiatributno, multikriterijumsko
    ... poređenja sa drugim metodama in na konkretnom primeru demonstrirana je primena predloženog pristupa.  Dagdeviren M., DECISION MAKING IN EQUIPMENT SELECTION: AN INTEGRATED APPROACH WITH AHP AND PROMETHEE / ODLUČIVANJE U IZBORU OPREME: INTEGRISANI AHP I PROMETHEE PRISTUP, Journal of intelligent ...
    ... multikriterijumskog i multiatributnog odlučivanja.  Lashgari A, Yazdani–Chamzini A., Majid Fouladgar M., Kazimieras Z.E., Shahriar S., Abbate n., EQUIPMENT SELECTION USING FUZZY MULTI CRITERIA DECISION MAKING MODEL: KEY STUDY OF GOLE GOHAR IRON MIN / IZBOR OPREME KORIŠĆENJEM FAZI MULTIKRITERIJUMSKOG PRISTUPA: ...
    ... M., Tumala Rao, V.M., Savremeno odlučivanje: metode i primena, Naučna knjiga, Beograd, 1991, 421. 24. Dagdeviren M., Decision Making in Equipment Selection: An Integrated Approach with AHP and PROMETHEE, Journal of intelligent manufacturing, Volume 19, Number 4, 2008, 397-406. 25. De Keyser W ...

  • Multivarijabilni modeli upravljanja u rudarstvu

    Marjan M. Hudej (2014-02-03)
    osetljivost i rizik. Više pobuda generiše ovakvu atribuciju. Prva je, multivarijabilnostambijentalnih uslova i funkcionalna i strukturna složenost rudarskih sistema (čovek -priroda (radna sredina) - mašina – okruženje); Druga se odnosi na ne postojanje opštenaučne saglasnosti oko ocene pogodnosti modela za podršku odlučivanju i upravljanje.Treća, ako bi saglasnost i postojala, nije sigurno da bi raspoloživi modeli, metode i taktike,dale ekvivalentne rezultate za iste rudničke uslove. Četvrta, sistemske nauke još uveknemaju opšte prihvaćen i u praksi primenljiv algoritam izbora najboljeg rešenja ...
    rudarstvo, odlučivanje, upravljanje, model,multivarijabilno, multiatributno, multikriterijumsko
    ... poređenja sa drugim metodama in na konkretnom primeru demonstrirana je primena predloženog pristupa.  Dagdeviren M., DECISION MAKING IN EQUIPMENT SELECTION: AN INTEGRATED APPROACH WITH AHP AND PROMETHEE / ODLUČIVANJE U IZBORU OPREME: INTEGRISANI AHP I PROMETHEE PRISTUP, Journal of intelligent ...
    ... multikriterijumskog i multiatributnog odlučivanja.  Lashgari A, Yazdani–Chamzini A., Majid Fouladgar M., Kazimieras Z.E., Shahriar S., Abbate n., EQUIPMENT SELECTION USING FUZZY MULTI CRITERIA DECISION MAKING MODEL: KEY STUDY OF GOLE GOHAR IRON MIN / IZBOR OPREME KORIŠĆENJEM FAZI MULTIKRITERIJUMSKOG PRISTUPA: ...
    ... M., Tumala Rao, V.M., Savremeno odlučivanje: metode i primena, Naučna knjiga, Beograd, 1991, 421. 24. Dagdeviren M., Decision Making in Equipment Selection: An Integrated Approach with AHP and PROMETHEE, Journal of intelligent manufacturing, Volume 19, Number 4, 2008, 397-406. 25. De Keyser W ...

  • Self-Engineering: Possibilities for Maintenance Operations in the Mining Machines Industry

    Steven Manders, Milorad Pantelić, Vladimir Milisavljević, Alberto Martinetti (2021)
    Self-engineering is a relatively new branch of knowledge that aims to understand how systems could “autonomously” re-configure or repair themselves without the intervention of the operators. A direct field of application is within the maintenance spectrum. Having systems or machines capable of self-detecting or even self-repairing could represent a game-changer, in capital asset fields such as the mining industry in particular. This paper aims to investigate the possible benefits and challenges of self-engineering / self-maintenance concerning mining machines, specifically bucket-wheel ...
    self-engineering, self-maintenance, maintenance operations, mining industry, bucket-wheel excavator, gearbox revitalization

  • New approach to correlation of hydrocarbon reservoirs in sandstone layers of the "Mokrin" field"

    Saša Ivanišević, Dejan Radivojević (2018)
    геофизички каротаж, депозиционе средине, лежишта угљоводоника, миоцен, пост‐ рифтнo, секвенциона стратиграфија
    ... tratigraphic classification, disregarding depositional environments where hydrocarbon‐ bearing  layers occurred. Due to  inconsistencies  in the selection of markers  in designation and correla‐ tion of hydrocarbon reservoirs, this approach has  led to  incorrect assessments of oil and gas reserves,  ...
    ... tion, designation and correlation  of A, D, E, F and G reservoirs as individual sandstone layers in the “Mokrin” field.  Inconsistencies in the  selection  of  markers,  designation  and  correlation  of  hydrocarbon  reservoirs  have  led  to  incorrect  assessments of oil and gas reserves and conf ...

  • A WebGIS Decision Support System for Management of Abandoned Mines

    Ranka Stanković, Nikola Vulović, Nikola Lilić, Ivan Obradović, Radule Tošović, Milica Pešić-Georgiadis (2016)
    ... layers, the panel for search, the legend, and user manual. Figure 2 shows details from the four tabs: Selection of visible layers (a), Search (b), Legend (c) and Manual (d). The list for layer selection has two distinct groups: one for the base layer and the other for thematic layers. Apart from choosing ...
    ... detailed data. Energies 2016, 9, 567 4 of 14 Figure 1. Main page of the Cadastre of Abandoned Mines of Vojvodina. (a) (b) (c) (d) Figure 2. Selection of (a) visible layers; (b) Search; (c) Legend and (d) Manual. Detailed information about a mine site are shown in a separate page and are grouped ...
    ... beneficiaries, in tabular and detailed form, is presented in Figure 3. Data management is user friendly and includes various types of filtering and selection with flexible output format and preview. All available and relevant data are stored in a database, such as, formal name of company in the Serbian ...

  • 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

  • Application of machine learning for diagnosing the operation of a deep well pump in oil production

    Maja Trikić (2024)
    This paper will thoroughly examine how machine learning can improve the diagnosis of deep well pumps by analyzing the role and function of the pumps, dynamograms, sensor technologies, and diagnostic methods.Our analysis will provide insights into modern techniques and approaches for enhancing the performance and reliability of oil production systems, targeting cost reduction and increased operational efficiency.
    deep well pump, dynamograms, machine learning, diagnostics of operating coditions,Random Forest, XGBoost
    ... subsurface equipment. This system consists of the driving unit (horsehead), a string of sucker rods, and the downhole pump. Walking Beam Equalizer Bearing ii i Countenweight — | Casig Stings = '{I Figure 2.1 Production equipment of a well in deep well pumping 2.1.1 Surface equipment for deep ...
    ... load on the smooth rod during a cycle are balanced using various methods, with the depicted equipment utilizing balance via counterweights on the main lever and balance beam. 2.1.2 Subsurface equipment for deep well pumping includes: a) Downhole pump b) Gas anchor c) Tubing anchor d) Sucker ...
    ... between the viscous fluid and various parts of the downhole equipment (sucker rods with couplings, internal tubing walls) d) Increased friction due to well deviation e) Vibration of the sucker rods f) Inertial effects in the surface equipment g) Slippage effects of the electric motor The resultant ...

  • Eksploatacioni učinci ugljenih sistema na površinskom kopu Tamnava–Zapadno polje

    Marko Lazić, Filip Miletić, Milena Lekić, Veljko Rupar, Željko Petrović, Lazar Žujović (2021)
    U radu su analizirani eksploatacioni učinci ugljenih sistema na površinskom kopu Tamnava–Zapadno polje. Period analize je prvih šest meseci tekuće godine. Analiza je vršena sa aspekta ostvarene proizvodnje, kvaliteta uglja, efektivnog vremena rada, kapacitetnog i vremenskog iskoršćenja i zastoja sistema. Za poređenje podataka različitih parametara koji po svojoj prirodi nisu međusobno uporedivi, u radu su korišćene metode višekriterijumskog odlučivanja.
    proizvodnja uglja, zastoji, metode višekriterijumskog odlučivanja
    ... Samanta, B., Sarkar, B., & Murkherjee, S.K. (2002). Selection of opencast mining equipment by a multi-criteria decision-making process. Mining Technology, 111(2), 136-142; [5] Basçetin, A. (2009). The study of decision making tools for equipment selection in mining engineering operations. Gospodarka Surowcami ...
    ... mineral processing: Applications and trends. Expert [8] Bazzazi, A. A., Osanloo, M., & Karimi, B. (2011). Deriving preference order of open pit mines equipment through MADM methods: Application of modified VIKOR method. Expert Systems with Applications, 38(3), 2550-2556;Systems with Applications, 121, 393-417; ...

  • Improvement of geodatabase queries within GeolISS

    Ranka Stanković (2008)
    ... 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 user can select one or more objects from the map and use the GeolISS toolbar for opening the user interface ...
    ... and data management. Figure 4. Form for spatial objects searching Ranka Stanković 70 4. Web service for query expansion Selection of words chosen for a query, which are of paramount importance for the quality of results obtained by the query, can be substantially improved by ...

  • Preliminary regional landslide susceptibility assessment using limited data

    Igor Peshevski, Milorad Jovanovski, Biljana Abolmasov, Jovan Papic, Uroš Đurić, Miloš Marjanović, Ubydul Haque, Natasha Nedelkovska (2019)
    In this paper a heuristic approach for preliminary regional landslide susceptibility assessment using limited amount of data is presented. It is called arbitrary polynomial method and takes into account 5 landslide conditioning parameters: lithology, slope inclination, average annual rainfall, land use and maximum expected seismic intensity. According to the method, in the first stage, a gradation is performed for each of the carefully selected conditioning parameters by assigning so called rating points to the grid cells on which the ...
    klizišta, podložnost
    ... Also, using a large number of conditioning fac- tors in a particular analysis is not a guarantee for successful susceptibility modelling. Factor selection will always be subjec- tive, so the assessment of regional factors by the expert conduct- ing the analysis is of crucial importance. Statistical ...
    ... stated that every modelling result is highly dependent on the quality of the input data, the assumptions made to set up the model design and the selection of the appropriate performance metrics (PETSCHKO et al. 2014). Furthermore, the evaluation of reliability consists of changing some of the model ...
    ... expected seismic intensity and land use. These parameters are selected as the most representative for landslide susceptibility as- sessment, and their selection is based on analysis of limited his- torical data of landslides that had a destructive effect on the in- frastructure in the Republic of Macedonia ...

  • Design of a sucker rod pumping system

    Ana Ponoćko (2024)
    For a long time in the history of oil production, sucker rod pumps have been the first and in many cases the only choice when it comes to mechanical extraction methods. Proper selection of each individual element of the system enables optimization, which entails benefits in the form of increased efficiency and reduced costs. The first part of the paper presents the underground and surface equipment of the rod pump and describes the operation of the entire system. The ...
    sucker rod pump, fluid production, mechanical extraction methods,, Prosper, QROD, RODSTAR
    ... necessary data for the final equipment selection and determining the most economical method for fluid production lifting: has been completed. Operational pumping costs, expressed through electrical energy consumption, can be optimized by making the correct equipment choices (pump diameter, sucker ...
    ... mechanical extraction methods. Proper selection of each individual element ofthe system enables optimization, which entails benefits in the form of increased efficiency and reduced costs. The first part of the paper presents the underground and surface equipment of the rod pump and describes the ...
    ... if a tubing anchor is installed [16]. Figure 3.10. Tubing anchor /77/ 26 4 SURFACE EQUIPMENT 1. Drive Equipment: (pogodnska oprema) • Horsehead • Gearbox • Electric or Gas Engine 2. Equipment at the Wellhead: • Polished Rod • Rod Rotator (optional) • Seal Head- zaptivna glava ...

  • Evaluation of the effects of wastewater heat pump integration into district heating systems by simulation

    Dejan Ivezić, Marija Živković, Dimitrije Manić, Aleksandar Madžarević, Boban Pavlović, Dušan Danilović (2023)
    The integration of wastewater heat pumps (using purified water) in district heating systems is analyzed in this paper. The simulation procedure is proposed to analyze the impacts of stochasticity of purified water temperature and flow to heat pump integration and operation. The analysis includes calculation of the daily and seasonal coefficient of performance, as well as fossil fuel savings and CO2 emission reduction due to wastewater heat pump use. The proposed procedure is implemented for the case study in ...
    otpadne vode, toplotna pumpa, daljinsko grejanje, simulacija

  • A hydrogeological model of the open-cast mine Tamnava - West Field (Kolubara Coal Basin, Serbia)

    Jelena Ratković, Dušan Polomčić, Dragoljub Bajić, Bojan Hajdin (2016)
    ... lower aquifer, where there is vertical lithologic stratification and non-uniform horizontal spread of the lithologic members. This affected the selection A hydrogeological model of the open-cast mine… 51 of the main characteristics of the hydrogeologic model, which was comprised of eight layers ...
    ... support a hydrodynamic analysis of the conditions for ensuring protection of the open-cast mine Tamnava - West Field from groundwater, as well as the selection of an optimal dewatering system. ACKNOWLEDGEMENT Our gratitude goes to the Ministry of Education, Science and Technological Development of ...

  • Izbor rotornih bagera za proces revitalizacije: primer rotornih bagera SRs 1200 u rudarskom basenu Kolubara

    Predrag Jovančić, Dragan Ignjatović, Stevan Đenadić, Filip Miletić, Goran Todorović, Dragan Novaković (2020)
    Revitalizacija je proces ili skup tehničkih zahvata na mašini kojim se vrši zamena svih dotrajalih ili oštećenih delova metalne konstrukcije. Sastavni deo procesa revitalizacije je i modernizacija zastarele elektro-mašinske opreme. Principi revitalizacije sasvim sigurno nisu sadržani u okviru redovnog godišnjeg ili dnevnog održavanja. Oni predstavljaju održavanje onih veličina koje su značajne za mašinu kao celinu (u ovom slučaju rotorni bager). U ovom radu su analizirani rotorni bageri oznake SRs 1200. Na površinskim kopovima rudarskog basena Kolubara takvih bagera ima ...
    Rotorni bageri, revitalizacija, SRs1200

  • 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
    ... procedure. The potential amine degradation and evaporation can affect the solvent losses, high concentration of solvents could be corrosive to the equipment, and high energy consumption is present during the solvent regeneration [4, 18, 22]. 3.2. Adsorption In adsorption procedures, a solid sorbent ...
    ... for capturing CO2 from flue gases such as absorption, adsorption, cryogenic distillation, and membrane-based separation have some drawbacks like equipment complexity, high energy consumption, and high capital and operating costs. Membrane-based separation has several advantages over other technologies ...
    ... 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 depends on more factors. Post-combustion CO2 capture is the most mature option, and it can be integrated into existing power ...

  • Хазард од клизишта у Србији у 21. веку

    Biljana Abolmasov (2019)
    клизишта, хазард од клизишта, промене климе
    ... precipitation rainfall and snowmelt, or a combiné 88 ������ ������ �� Landslide risk assessment unfolds gradually, starting from t inventory, selection of conditioning and triggering factors, landslide s hazard assessment, mapping elements at risk, and landslide vulnerab All these segments and their ...
    ... analyzed by tak the Serbian National Climate Scenario Models up to 2100. 88 Landslide risk assessment unfolds gradually, starting from > inventory, selection of conditioning and triggering factors, lands hazard assessment, mapping elements at risk, and landslide vulnera All these segments and their techniques ...

  • Strategic Environmental Assessment in the Application of Preventive Protection for Wind Farm Noise—Case Study: Maestrale Ring Wind Farm

    Boško D. Josimović, Aleksandar Cvjetić, Božidar Manić (2021)
    Determining the spatial position of wind turbines is the initial and most important phase in the development of a wind farm project. In this sensitive phase, all potential problems that may arise in the later stages of project development should be prevented by means of spatial and urban planning instruments. This makes it possible to achieve maximum use of the potential of wind in a particular space and, thus, fulfil the technical and economic requirements of the project while ...
    Energija,energetski inženjering i elektroenergetska tehnologija,obnovljivi izvori energije, održivost i životna sredina,električni i elektronski inženjering,kontrola i optimizacija,inženjering
    ... ve evaluation methods in SEA. These methods positively affect the application of the principle of preventive protection through the opti- mal selection of the number and position of wind turbines on one hand and the objectivity of draw- ing conclusions based on which strategic decisions are made ...
    ... using SEA in the earliest phase of project planning, followed by EIA/ESIA, which would be car- ried out to check the results of the SEA after selection of the specific type of wind turbine and which would also determine the technical measures of environmental protection dur- ing the preparation ...
    ... nation of wind farms and, thus, their importance in implementing these projects. A particularly sensitive methodological step in the SEA is the selection of relevant evaluation criteria. In the case of noise impact assessment from the planned Maestrale Ring wind farm, the criteria for evaluating ...

  • 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
    ... 7. Bogdanović, D.; Nikolić, D.; Ilić, I. Mining method selection by integrated AHP and PROMETHEE method. An. Aced. Bras. Cienc. 2012, 84, 219–233. [CrossRef] 8. Ataei, M.; Jamshidi, M.; Sereshki, F.; Jalali, S.M.E. Mining method selection by AHP Approach. J. S. Afr. Inst. Min. Metall. 2008, 108, ...
    ... “Trepča”. The purpose of this paper is to rank the flotation tailings of MMCC “Trepča” in terms of negative environmental impact. For these purposes, selection of relevant parameters was undertaken and calculations were made through the application of multi-criteria analysis (MCA). This method has recently ...
    ... of 18 do not replace the decision-making process, but can contribute to understanding the deliberated multi-criteria problem [20]. The criteria selection for assessment is an important and very complex step, determining the final results of the MCA. The set criteria estimation result essentially depends ...

  • Развој хибридног модела за оптиматизацију завршне контуре одлагалишта у површинској експлоатацији лежишта минералних сировина

    Aлександар Додеровић (2024)
    Површинска експлоатација минералних сировина захтијева претходно откопавање значајних( милионских) количина јаловине, које је неопходно транспортовати до локације на којој ће сеона трајно одложити. Традиционални приступ избора локације и дизајна одлагалишта се карактерише парцијалним приступом, заснованом на анализи неколико водећих критеријума као и на личном искуству инжењера, често занемарујући синергетски ефекат осталих утицајних фактора Технолошке операције које се односе на манипулацију јаловином, међу којима предњачи транспорт, генеришу највећи дио трошкова у површинској експлоатацији. Такође, цјелокупан процес експлоатације додатно је ограничен ...
    оптимизације завршне контуре одлагалишта, хибридни модел, површинска експлоатација, генетски алгоритам