Претрага
2655 items
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Development of a petrographic classification system for organic particles affected by self-heating in coal waste. (An ICCP Classification System, Self-heating Working Group – Commission III)
M. Misz-Kennan, J. Kus, D. Flores, C. Avila, Z. Büçkün, N. Choudhury, K. Christanis, J.P. Joubert, S. Kalaitzidis, A.I. Karayigit, M. Malecha, M. Marques, P. Martizzi, J.M.K. O'Keefe, W. Pickel, G. Predeanu, S. Pusz, J. Ribeiro, S. Rodrigues, A.K. Singh, I. Suárez-Ruiz, I. Sýkorová, N.J. Wagner, D. Životić (2020)Self-heating of coal waste is a major problem in the leading coal-producing and consuming countries, independent of the recent or past coal exploitation history. The phenomenon of self-heating is dependent on many factors such as the properties of organic matter (maceral composition and rank), moisture and pyrite content, climate effects, and storage conditions (shape of the dump or compaction of the coal waste). Once deposited, coal waste undergoes oxidation, which can lead to self- heating with the overall temperatures ...M. Misz-Kennan, J. Kus, D. Flores, C. Avila, Z. Büçkün, N. Choudhury, K. Christanis, J.P. Joubert, S. Kalaitzidis, A.I. Karayigit, M. Malecha, M. Marques, P. Martizzi, J.M.K. O'Keefe, W. Pickel, G. Predeanu, S. Pusz, J. Ribeiro, S. Rodrigues, A.K. Singh, I. Suárez-Ruiz, I. Sýkorová, N.J. Wagner, D. Životić. "Development of a petrographic classification system for organic particles affected by self-heating in coal waste. (An ICCP Classification System, Self-heating Working Group – Commission III)" in International Journal of Coal Geology, Elsevier BV (2020). https://doi.org/10.1016/j.coal.2020.103411
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Српски језик у дигиталном добу -- The Serbian Language in the Digital Age
Duško Vitas, Ljubomir Popović, Cvetana Krstev, Ivan Obradović, Gordana Pavlović-Lažetić, Mladen Stanojević (2012)... majority of the population accesses the global Web from desktop computers, one fih from cell phones, and a little less from laptops. As for connection type, almost one half of the house- holds in Serbia that use the Internet have anADSL con- nection, one quarter have cable Internet, whereas 29% of the respondents ...
... also offer some sort of language sup- port, and (c) through in-house development within domestic organisations such as publishing houses and translation agencies. Except in rare cases, these three lines of activities are realised independently from each other. On the other hand, the computer-literate ...
... use such ser- vices. Trading via the Internet has been used by only 13% of the population. According to the Statistical Of- fice of the Republic of Serbia [19], the usage of ICT equipment shows the growth. According to the same source, the number of compa- nies using the Internet was 96.8% in 2010 (compared ...Duško Vitas, Ljubomir Popović, Cvetana Krstev, Ivan Obradović, Gordana Pavlović-Lažetić, Mladen Stanojević. "Српски језик у дигиталном добу -- The Serbian Language in the Digital Age" in META-NET White Paper Series, G. Rehm, H. Uszkoreit (eds.), Springer (2012)
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Machine learning based landslide assessment of the Belgrade metropolitan area: Pixel resolution effects and a cross-scaling concept
Improvements of Machine Learning-based landslide prediction models can be made by optimizing scale, customizing training samples to provide sets with the best examples, feature selection, etc. Herein, a novel approach, named Cross-Scaling, is proposed that includes the mixing of training and testing set resolutions. Hypothetically, training on a coarser resolution dataset and testing the model on a finer resolution should help the algorithm to better generalize ambiguous examples of landslide classes and yield fewer over/underestimations in the model. This ...Uroš Đurić, Miloš Marjanović, Zoran Radić, Biljana Abolmasov. " Machine learning based landslide assessment of the Belgrade metropolitan area: Pixel resolution effects and a cross-scaling concept" in Engineering Geology , Elsevier (2019). https://doi.org/10.1016/j.enggeo.2019.05.007
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Optimizacija i planiranje površinskih kopova stohastičkim modelima
Dejan R. Stevanović (2015-05-29)Savremeno rudarstvo izloženo je stalnom trendu pogoršanja uslova poslovanja.Mogućnost ostvarenja ekonomskih i drugih ciljeva rudarskog projektakompromitovana je stalnim pogoršanjem kvaliteta ležišta na kojima se vršieksploatacija, kao i značajnoj dozi neizvesnosti povezane sa geološkim,ekonomskim i tehničkim parametrima proizvodnje. U ovako kompleksnimuslovima poslovanja, matematički modeli sposobni da odgovore značajnimizazovima, odnosno ponude optimalna rešenja kojima se garantuje maksimalnoispunjenje projektovanih ciljeva, nameću se kao neophodnost.Trenutni, konvencionalni pristup optimizaciji i planiranju površinskih kopovazasniva se na algoritmima, razvijenim sredinom prošlog veka čije je opšteobeležje deterministički ...površinski kop, planiranje, optimizacija, stohastički modeli, kontrola kvaliteta uglja, neizvesnost.... 82-87. Dimitrakopoulos R, Ramazan S, 2008, Stochastic integer programming for optimizing long term production schedules of open pit mines: methods, application and value of stochastic solutions, Mining Technology, Transactions of the Institute of Mining and Metallurgy, Section A, Vol. 117, No. 4, str ...
... solutions. In planning processes and optimization of open pits, usage of stochastic mathematical models is analyzed in the research that is represented by this dissertation. The aim of the dissertation is to prove the advantages of implementations of stochastic or combined (hybrid) stochastic and ...
... 1949, The Monte Carlo Method, Journal of the American Statistical Association (American Statistical Association), Vol. 44 (247): str. 335–341 239 Morley C., Snowden V., and Day D., 1999, Financial impact of resource/reserve uncertainty, The Journal of The Southern African Institute of Mining and ...Dejan R. Stevanović. "Optimizacija i planiranje površinskih kopova stohastičkim modelima" in Универзитет у Београду, Универзитет у Београду, Рударско-геолошки факултет (2015-05-29)
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Optimizacija i planiranje površinskih kopova stohastičkim modelima
Dejan R. Stevanović (2015-05-29)Savremeno rudarstvo izloženo je stalnom trendu pogoršanja uslova poslovanja.Mogućnost ostvarenja ekonomskih i drugih ciljeva rudarskog projektakompromitovana je stalnim pogoršanjem kvaliteta ležišta na kojima se vršieksploatacija, kao i značajnoj dozi neizvesnosti povezane sa geološkim,ekonomskim i tehničkim parametrima proizvodnje. U ovako kompleksnimuslovima poslovanja, matematički modeli sposobni da odgovore značajnimizazovima, odnosno ponude optimalna rešenja kojima se garantuje maksimalnoispunjenje projektovanih ciljeva, nameću se kao neophodnost.Trenutni, konvencionalni pristup optimizaciji i planiranju površinskih kopovazasniva se na algoritmima, razvijenim sredinom prošlog veka čije je opšteobeležje deterministički ...površinski kop, planiranje, optimizacija, stohastički modeli, kontrola kvaliteta uglja, neizvesnost.... 82-87. Dimitrakopoulos R, Ramazan S, 2008, Stochastic integer programming for optimizing long term production schedules of open pit mines: methods, application and value of stochastic solutions, Mining Technology, Transactions of the Institute of Mining and Metallurgy, Section A, Vol. 117, No. 4, str ...
... solutions. In planning processes and optimization of open pits, usage of stochastic mathematical models is analyzed in the research that is represented by this dissertation. The aim of the dissertation is to prove the advantages of implementations of stochastic or combined (hybrid) stochastic and ...
... 1949, The Monte Carlo Method, Journal of the American Statistical Association (American Statistical Association), Vol. 44 (247): str. 335–341 239 Morley C., Snowden V., and Day D., 1999, Financial impact of resource/reserve uncertainty, The Journal of The Southern African Institute of Mining and ...Dejan R. Stevanović. "Optimizacija i planiranje površinskih kopova stohastičkim modelima" in Универзитет у Београду, Универзитет у Београду, Рударско-геолошки факултет (2015-05-29)
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A Data Driven Approach for Raw Material Terminology
Olivera Kitanović, Ranka Stanković, Aleksandra Tomašević, Mihailo Škorić, Ivan Babić, Ljiljana Kolonja (2021)The research presented in this paper aims at creating a bilingual (sr-en), easily searchable, hypertext, born-digital, corpus-based terminological database of raw material terminology for dictionary production. The approach is based on linking dictionaries related to the raw material domain, both digitally born and printed, into a lexicon structure, aligning terminology from different dictionaries as much as possible. This paper presents the main features of this approach, data used for compilation of the terminological database, the procedure by which it has ...sirovine, rudarstvo, terminologija, rečnik, terminološka aplikacija, mobilna aplikacija, digitizacija, leksički podaci, korpusi, otvoreni povezani podaci... from their Appl. Sci. 2021, 11, 2892 5 of 22 initial custom in-house scheme into the TermBase eXchange (TBX) Standard [21]. Another terminological resource, mostly handcrafted, was also developed to support knowledge management in specific subfields of mining engineering, such as mining equipment ...
... Since the presented approach used a combination of reuse of data, automatic extraction and manual post-editing, a comparison of those aspects with some similar solutions follows. When it comes to the reuse of data, we followed the idea of the Sõnaveeb language por- tal of the Institute of the Estonian ...
... combination of: reuse of data, automatic extraction and manual postediting. The advantage of using online platforms, which offer the possibility of regular updates and a more effective collaboration via the internet, as well as the use of mobile devices were highlighted in literature [4]. The impact of mobile ...Olivera Kitanović, Ranka Stanković, Aleksandra Tomašević, Mihailo Škorić, Ivan Babić, Ljiljana Kolonja. "A Data Driven Approach for Raw Material Terminology" in Applied Sciences, MDPI AG (2021). https://doi.org/10.3390/app11072892
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Hibridni sistem za planiranje i analizu ventilacije rudnika
... elektronsku knjigu? Sadržaj knjige UML notacija Index About the book 1 Population +Reproduce() +MovePopulation() : int +GetPopulParam() -PopSize : integer = 50 -GenerationNum : integer -StopEvolutionTime : integer -NOfGeneration : integer Chromosome +GetFitness() +PutFitness() -ChromosomeType ...
... re of the hybrid system INVENTS The outlined system (Figure 3) permits an aerodynamic definition of mine ventilation network based on psychrometric recordings and the use of ResNet software, i.e. the establishment of actual aerodynamic resistance of mine chambers and thus the configuration of the ...
... network. The results obtained after the desired analysis by SimVent can be exported to VENTEX – a diagnostic expert system that performs the analysis of obtained results according to a number of criteria. The result of such an expert analysis is an estimate of the validity and effectiveness of the ventilation ...Nikola Lilić, Ranka Stanković, Ivan Obradović. Hibridni sistem za planiranje i analizu ventilacije rudnika, Rudarsko-geološki fakultet, Univerzitet u Beogradu, 2000
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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 ...... fully. The other part refers to the difference between the exergy entering and the exergy leaving the system with respect to the CO2 flow. This exergy expenditure decreases as the process occurs, and the exergy gained is lower than the exergy expended because of the irreversibility of the equipment ...
... oil/gas recovery refers to the injection of materials into the reservoir to maintain the pressure in the formation and to release trapped oil/gas within the pores of the formation. The recovery process allows the injected carbon dioxide to mix with the trapped fluids within the pores and release it for ...
... reduce the cost of the process [15]. If brine, mixed with ammonia is exposed to CO2, already-weak bonds start to form, which leads to the removal of the ions from the water phase. The products sodium bicarbonate and ammonium chloride are heavy and, thus, can easily settle to the bottom of the tank ...John Nyame. Analysis Of the Process Of Carbon Capture Utilization And Storage In Underground Reservoirs, 2024
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The Fuzzy–AHP Synthesis Model for Energy Security Assessment of the Serbian Natural Gas Sector
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 ...... satisfies the condition of outcome, the value of Jc is calculated and rounded as integer, as follows: Jc = (kP1i · j(µP1)c) + (kP2i · j(µP2)c) + (kP3i · j(µP3)c) (14) wherе: - ki is the influential factor of the corresponding partial indicator on the synthesis and obtained on the basis of mutual ranking ...
... Table 19 shows the values of the index in the event of realization of the planned projects of interconnections with the gas systems of Bulgaria, Romania and Croatia. Table 19. Index of diversification of import rights of supply (IDIRS) in case of realization of the planned projects of interconnections ...
... for the security of supply indicator (S) and the partial indicator availability of energy (S1). (II) The second step in the formation of the synthesis model was the fuzzification of the input data. (IIa) In the case of expert evaluations, questionnaires were formed in which the answers of the corresponding ...Aleksandar R. Madžarević, Dejan D. Ivezić, Miloš L. Tanasijević, Marija A. Živković. "The Fuzzy–AHP Synthesis Model for Energy Security Assessment of the Serbian Natural Gas Sector" in Symmetry, MDPI AG (2020). https://doi.org/10.3390/sym12060908
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Novi model za postizanje optimalne proizvodnje na naftnom polju Amal
Elnori Elmabrouk Ali Elhaddad (2015-04-16)Doktorskom disertacijom analizirani su i proučavani problemi proizvodnje nafte iprimenjene metode za njihovo rešavanje na naftnom polju Amal. Ukratko jeprikazana proizvodnje nafte u Libiji, njene karakteristike i rezerve, da bi se videoznačaj ovog naftnog polja.Utvrđeno je da su na naftnom polju Amal ključni problemi koji prate procesproizvodnje taloženje parafina, pojava slojnog peska, neefikasan rad gasliftsistema, neefikasna desalinizacija nafte i ekološki problemi. Proizvodniproblemi, pojedinačno i više njih zajedno, na nekim bušotinama uzrokovali susmanjenje proizvodnje nafte od 40 do 75%. Zbog ...... solution of the paraffin deposition problems, it has defined a set of new actions that must be taken. The analysis of the application of chemical inhibitors has been performed, and the application of thermal method of tubing heating has been proposed. As a solution for the penetration of layer ...
... g problems and the latest technical literature, a new model has been defined for achieving the optimum oil production. The model consists of two major parts; the first one dealing with the solution of the production problems, and the second one dealing with the determination of optimum parameters ...
... parameters for Gas Lift Operations. The originality of the model reflects in the fact that environmental aspects of the functioning of the oil production process have been exactly introduced into it and measures based on algorithms for the decrease of impact on the environment have been proposed. ...Elnori Elmabrouk Ali Elhaddad. "Novi model za postizanje optimalne proizvodnje na naftnom polju Amal" in Универзитет у Београду, Универзитет у Београду, Рударско-геолошки факултет (2015-04-16)
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Novi model za postizanje optimalne proizvodnje na naftnom polju Amal
Elnori Elmabrouk Ali Elhaddad (2015-04-16)Doktorskom disertacijom analizirani su i proučavani problemi proizvodnje nafte iprimenjene metode za njihovo rešavanje na naftnom polju Amal. Ukratko jeprikazana proizvodnje nafte u Libiji, njene karakteristike i rezerve, da bi se videoznačaj ovog naftnog polja.Utvrđeno je da su na naftnom polju Amal ključni problemi koji prate procesproizvodnje taloženje parafina, pojava slojnog peska, neefikasan rad gasliftsistema, neefikasna desalinizacija nafte i ekološki problemi. Proizvodniproblemi, pojedinačno i više njih zajedno, na nekim bušotinama uzrokovali susmanjenje proizvodnje nafte od 40 do 75%. Zbog ...... solution of the paraffin deposition problems, it has defined a set of new actions that must be taken. The analysis of the application of chemical inhibitors has been performed, and the application of thermal method of tubing heating has been proposed. As a solution for the penetration of layer ...
... g problems and the latest technical literature, a new model has been defined for achieving the optimum oil production. The model consists of two major parts; the first one dealing with the solution of the production problems, and the second one dealing with the determination of optimum parameters ...
... parameters for Gas Lift Operations. The originality of the model reflects in the fact that environmental aspects of the functioning of the oil production process have been exactly introduced into it and measures based on algorithms for the decrease of impact on the environment have been proposed. ...Elnori Elmabrouk Ali Elhaddad. "Novi model za postizanje optimalne proizvodnje na naftnom polju Amal" in Универзитет у Београду, Универзитет у Београду, Рударско-геолошки факултет (2015-04-16)
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Model za optimizaciju graničnog saržaja metala u rudi u funkciji dugoročnog planiranja površinskih kopova
Daniel P. Kržanović (2016-06-14)Optimizacija graničnog sadržaja metala u rudi jedan je od osnovnih koraka u planiranju i dizajniranju površinskih kopova i ima za cilj postizanje maksimalne neto sadašnje vrednosti (NPV). Iz tog razloga, optimizacija graničnog sadržaja i danas je predmet mnogih istraživanja u rudarskoj nauci, sa ciljem rešavanja praktičnih problema u eksploataciji ležišta.Dugoročno planiranje eksploatacije na površinskim kopovima podrazumeva sagledavanje svih relevantih parametara i faktora (geologije rudnog ležišta, tehnologije proizvodnog procesa, kapaciteta otkopavanja i prerade, troškova, cena metala, iskorišćenja i dr) kako ...površinski kop, dugoročno planiranje, optimizacija graničnog sadržaja, maksimizacija neto sadašnje vrednosti (NPV).... For this reason, the optimization of cut off grade is even today the subject of many researches in the mining science, with the aim of solving the practical problems in the exploitation of deposits. Long-term planning of exploitation at the open pit involves consideration of all relevant parameters ...
... economic results in the integrated system of exploitation, flotation and metallurgical processing of ore. In particular, the application of proposed model is achieved by maximization the net present value of the project. The importance of optimization the cut off grade of metal in the ore for long-term ...
... Slovaca, The Union of Metallurgy, Mining Industry and Geology of Slovak Republic, the Slovak Mining Society, the Faculty of Mining, Ecology, Process Control and Geotechnologies (FBERG) of the Technical University of Kosice (Slovakia), and the Faculty of Mining and Geology (HGF) of the VSB Technical ...Daniel P. Kržanović. "Model za optimizaciju graničnog saržaja metala u rudi u funkciji dugoročnog planiranja površinskih kopova" in Универзитет у Београду, Универзитет у Београду, Рударско-геолошки факултет (2016-06-14)
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Анализа утицаја искоришћења у преради на резултате оптимизације површинских копова
Стефан Митић (2024)Одређивање оптималних граница површинског копа је сложен и итеративни процес који захтева мултидисциплинарну експертизу, софистициране технике анализе и пажљиво разматрање геолошких, рударских, економских,техничких, еколошких и друштвених фактора. Оптимизација подразумева генерисање серије шкољки, површинског копа на основу различитих фактора прихода (Revenue factor) са итеративним кораком промене цене метала у односу на базну цену. Свака генерисана шкољка представља инкрементално повећање запремине резерви према инкременталном повећању продајне цене метала. Велики број техно -економских фактора утиче на овај процес, и промена сваког од њих ...оптимизација површинског копа, анализа границе копа, оптимална контура копа, лежиште Бувач, профит, искоришћење у преради, трошкови прераде руде... Претрага репозиторијума доступна је на www.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 Pynapcko ...
... oomku (pakynTerT. 17.Lane, K. F., 1988. The Economic Definition of Ore Cutoff Grades in Theory and. Ist edition ed. s.l.:Communications Ltd. 18.Lee, T. D., 1984. Planning and mine feasibility study—4n owne?r s perspective. Spokane, Proceedings of the 1984 NWMA Short Course “Mine Feasibility—- ...
... Mining, Metallurgy, and Exploration, Inc. (SME). 30. Whittle J., 1999. A decade of open pit mine planning and optimization - The craft of turning algorithms into packages. Golden, Colorado, Colorado School of Mines. 31. Electronic source [Online] Available at: https://www.3ds.com/product ...Стефан Митић. Анализа утицаја искоришћења у преради на резултате оптимизације површинских копова, 2024
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Prognoza operativne efikasnosti aktivnog podzemnog rudnika zasnovana na teoriji sivih sistema
Svetlana M. Štrbac-Savić (2016-06-10)Efikasnost predstavlja preduslov za opstanak svake rudarske kompanije, posebno u uslovima izuzetno konkurentnog trţišnog okruţenja kao što je to rudarska industrija. Efikasnost oznaĉava sposobnost kompanije da ispuni svoje kratkoroĉne ili dugoroĉne ciljeve. Operativna efikasnost se definiše kao odnos izmeĊu ulaznih parametara potrebnih za odvijanje proizvodnje i pokazatelja dobijenih proizvodnjom. U kontekstu rudarskog poslovanja, operativna efikasnost se odnosi na vreme potrebno da se mineralno dobro transformiše u novĉana sredstva. Visoka operativna efikasnost se postiţe kada se ostvari prava kombinacija karakteristika ...podzemni rudnik, operativna efikasnost, prognoza, teorija sivih sistema, stohastiĉke diferencijalne jednaĉine, simulacija... Zhongzhe and Yang Zheba, The macro control model for the teachers of university, Applications of System Engineering, 1, pp. 32-39, 1986. [WEYGANDT10] Weygandt J.J., Kimmel P.D., Kieso D.E., ―Managerial Accounting: Tools for Business Decision Marketing‖, 5th edition, Publishing House Wiley&Sons, 2010 ...
... different inputs. The simulation allows analysts to describe the uncertainty of variables that influence the value of DOL by different time depending scenarios. The first objective of the use of simulation in the forecasting is to determine the distribution of the DOL from the variables that affect ...
... defined as the ratio between the input required to run production process and the output gained from the production. In the context of mining business, operational efficiency refers to the length of time until mineral assets are transformed to money. Peak operational efficiency occurs when the right ...Svetlana M. Štrbac-Savić. "Prognoza operativne efikasnosti aktivnog podzemnog rudnika zasnovana na teoriji sivih sistema" in Универзитет у Београду, Универзитет у Београду, Рударско-геолошки факултет (2016-06-10)
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Geološko-geofizički model dela Timočkog magmatskog kompleksa
Snežana M. Ignjatović (2014-06-30)Timočki magmatski kompleks (TMK) u geotektonskom smislu pripada KarpatoBalkanidimaistočne Srbije, koji su deo Tekijsko-Dakijske jedinice. TMK je nastaotokom kontinuirane vulkanske aktivnosti, koja je trajala oko deset miliona godina iodvijala se generalno u tri faze (Zimmerman et al., 2008, Kolb et al., 2013, Banješević,2006). Pomeranje vulkanskog fronta je išlo od istoka ka zapadu (von Quadt et al., 2002,2003, 2007). Ovaj kompleks pripada tetijskom evroazijskom metalogenetskom pojasu usvetu poznat po ležištima bakra i zlata (Janković, 1990).U doktorskoj disertaciji su prikazani rezultati ...Timočki magmatski kompleks, aeromagnetska istraživanja, gravimetrijskaistraživanja, 2D geološko-geofizički model, Valja Strž, magmatsko telo... Geological-geophysical model of the part of the Timok Magmatic Complex Abstract The Timok Magmatic Complex (TMC) belongs to the East Serbian Carpatho- Balkanides which is part of the Tisza-Dacia Unit. The TMC was formed by continuous volcanic activity throughout the period of ten million years that ...
... exposures. The results of modelling shown that pluton continues towards the south and north. The outspread of this pluton is larger in the south than in the north. The model also revealed that the subvolcanic bodies, placed mostly in central part and partly in western part of the TMC, correspond ...
... Symposium – Geology and metallogeny of copper and gold deposits in the Bor metallogenic zone – Bor 100 years, Special issue, Bor, 199-202. Banješević, M., 2002. Geology of the area between eastern hillslope of the Crni Vrh Mt. and the Kriveljska reka area – part of the Timok Magmatic Complex. 34 th ...Snežana M. Ignjatović. "Geološko-geofizički model dela Timočkog magmatskog kompleksa" in Универзитет у Београду, Универзитет у Београду, Рударско-геолошки факултет (2014-06-30)
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Optimizacija utovarno-transportnih sistema u funkciji planiranja površinskog kopa
Mirjana V. Banković (2018-07-13)Profitabilna eksploatacija sve složenijih ležišta je težak zadatak koji zavisi odtemeljnog procesa analize, planiranja i projektovanja rudnika. Izvodljiv strateškiplan mora da zadovoljava društvena, regulatorna, tehnološka, geometrijska iekonomska ograničenja. Kako bi se postigao osnovni cilj, odnosno profitabilnost iodrživost rudarskog projekta na duži period, neophodno je unapređenjematematičkih modela i informatičke podrške procesima planiranja i optimizacijekoji će omogućiti efikasnu realizaciju ovih ciljeva...tehnološki model, integralni model, planiranje, optimizacija,utovarno-transportni sistem, neto sadašnja vrednost projekta... achieve the basic goal, that is, the profitability and sustainability of the mining project in the long run, it is necessary to improve the mathematical models and IT support to the processes of planning and optimization that will enable efficient realization of these goals. Optimization of mine planning ...
... affects the economic efficiency of mining companies in the long run. The dissertation developed an integral approach and optimization model of planning process with special emphasis on the optimization of the mining excavation and transport systems, bearing in mind that these systems on the surface mines ...
... generate over 50% of the total cost of exploitation. The results of the research through the case study showed that the developed methodology and integral model with software support can be efficiently applied in order to achieve maximum economic effects, especially in exploitation of low quality coal ...Mirjana V. Banković. "Optimizacija utovarno-transportnih sistema u funkciji planiranja površinskog kopa" in Универзитет у Београду, Универзитет у Београду, Рударско-геолошки факултет (2018-07-13)
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Rezultati ispitivanja parametara čvrstoće i dinamičkih svojstava mermera i mogućnost njihove korelacije
Ispitivanja stena kao radne sredine, odnosno materijala sa kojim se gradi, na kome se gradi i u kome se gradi, svojom složenošću zahteva njeno svestrano izučavanje po velikom broju parametara. Zadatak Mehanike stena je da što bolje upozna ponašanje stenske mase i njenu otpornost na dejstvo pritiska, zatezanja i smicanja, kao i dinamičkih svojstava. Poznavanje navedenih parametara i njihova korelacija omogućavaju pouzdaniji izbor parametara za projektovanje danas sve zahtevnijih uslova kako podzemne, tako i površinske eksploatacije. U ovom radu ...mermer, jednoosna čvrstoća na pritisak, čvrstoća na istezanje, brzina longitudinalnih elastičnih talasa, korelacijaJelena Majstorović-Necković, Vladimir Čebašek, Veljko Rupar. "Rezultati ispitivanja parametara čvrstoće i dinamičkih svojstava mermera i mogućnost njihove korelacije" in 11. Međunarodna konferencija “Ugalj i kritični materijali" CCM 2023, Zlatibor, 11-14. oktobar 2023., Beograd : Jugoslovenski komitet za površinsku eksploataciju (2023)
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Hronološki pregled razvoja površinske eksploatacije lignita u Srbiji
U ovom preglednom radu dat je istorijski pregled razvoja površinske eksploatacije lignita na teritoriji Srbije, uz kratak osvrt na geološki nastanak i kvalitet i rezerve uglja, kao i mogućnosti korišćenja za dalju upotrebu. Kolubarski, Kostolački i Kovinski ugljeni baseni lignita u Srbiji, ne računajući Kosovsko-Metohijski i Drenički u sastavu AP Kosovo i Metohija po Rezoluciji 1244 UN, su ležišta najrasprostranjenijeg uglja - lignita u Srbiji koji se eksploatiše od druge polovine 20. veka na velikom broju površinskih kopova ...Bojan Dimitrijević, Radmila Gaćina, Bogoljub Vučković. "Hronološki pregled razvoja površinske eksploatacije lignita u Srbiji" in XI Međunarodna konferencija ugalj i kritični mineral CCM 2023, Zlatibor, 11-14. oktobar 2023., Beograd : Jugoslovenski komitet za površinsku eksploataciju (2023)
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Методологија интегралне анализе сценарија енергетског развоја
Александар Маџаревић (2019)енергетска безбедност, сценарио развоја, фази логика, сигурност снабдевања, доступност, расположивост, природни гас... which resulted from the partial review of the interaction of energy development with the economic, ecological, social and institutional aspect of development. By applying the methodology to the case study of the energy safety assessment of the natural gas sector, based on the development scenarios ...
... find an assessment of the energy security of the energy development scenarios. Energy security is a synthesis of the geopolitical and energy aspects of the availability of energy in various forms and enough quantities at favourable prices. The main goal of the doctoral dissertation is to create ...
... analysing the energy security of the energy development scenarios. This methodology is based on the theory of the fuzzy logic and the fuzzy conclusion considering energy, economic, ecological and social criteria. The dissertation contributed to overcoming the inconsistencies in the assessment of the ...Александар Маџаревић. Методологија интегралне анализе сценарија енергетског развоја, Рударско-геолошки факултет, 2019
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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 ...... literature review on methodological applications, European Journal of Operational Research, 2010, 200: 198-215. 11. Behzadian, M., Seyyed, M.H.M., Joshua, I., Mark G., Mohammad, M. S., PROMETHEE Group Decision Support System and the House of Quality, Group Decision and Negotiation, Online ISSN 1572-9907 ...
... mines. Since the goal is not to select the best model, but rather the best solution for the task in question, the procedure of selection of the best ranked alternative, or the best order of alternatives is accomplished depends on the instabilities of multi-model ranks according to the algorithm set ...
... case of multi-model ranks equivalence, the order of alternatives is accepted as the final solution, otherwise the process of defining the final order of alternatives is achieved by pondering. If the goal is the best (the first ranked) alternative, the procedure is optional, depending on the multi-model ...Marjan M. Hudej. "Multivarijabilni modeli upravljanja u rudarstvu" in Универзитет у Београду, Универзитет у Београду, Рударско-геолошки факултет (2014-02-03)