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Упит dcterms_subject_txt:Control and Systems Engineering

2382 items

  • Smanjenje sleganja plitkih temelja primenom mikrošipova

    Slobodan Ćorić, Dragoslav Rakić (2021)
    Mikrošipovi su šipovi malog prečnika koji se grade tako što se u tlu specijalni postupkom formira bušotina koja se zatim armira i injektira. Njihov prečnik je najčešće 150 – 300 mm, a dužina može da bude i više desetina metara. Mikrošipovi mogu da se grade u svim vrstama tla i mogu da budu vertikalni i kosi. Oni se, stoga, koriste kao zamena za konvencionalne šipove i ankere. Primena mikrošipova u fundiranju predstavlja jedan savremeni način izgradnje i sanacije temelja/objekata. ...
    mikrošipovi, sleganje plitkih temelja i mikrošipova, krutost tla i mikrošipova

  • Sistem poslovne inteligencije za upravljanje zaštitom na radu u rudarskoj industriji

    Ljiljana R. Kolonja (2016-09-23)
    Postojeća organizacija zaštite na radu na površinskim kopovima uglja često nije umogućnosti da blagovremeno i tačno ukaže na nedostatke, koji mogu u bližoj ilidaljoj budućnosti da budu uzrok narušavanja bezbednosti radnika, ali i uzrokoštećenja materijalnih dobara rudnika. Nemogućnost donošenja pravovremenihodluka je moguće izbeći uvođenjem softverski podržanih sistema za praćenje ianalizu bezbednosti i zaštite na radu.Osnovni cilj ove doktorske disertacije je definisanje metodologije i razvoj modelasistema upravljanja zaštitom na radu, koji će omogućiti savremen, adekvatan isveobuhvatan način praćenja i analize ...
    rudarstvo, bezbednost i zdravlje na radu, poslovna inteligencija,tehnička zaštita, ontologije
    ... on OLAP cube. International Journal of Engineering Research and Applications (IJERA), 2, 1147‐1151. JIANG, J. J. & KLEIN, G. 1999. User evaluation of information systems: By system typology. Systems, Man and Cybernetics, Part A: Systems and Humans, IEEE Transactions on, 29, 111‐116 ...
    ... 2003. The DeLone and McLean model of information systems success: a ten‐year update. Journal of management information systems, 19, 9‐30. DEVEDZIĆ, V. 2002. Understanding ontological engineering. Communications of the ACM, 45, 136‐144. DHILLON, B. S. 2003. Engineering safety: fundamentals ...
    ... Health and Safety] in the 20th century. Journal of Occupational Health and Safety, Australia and New Zealand, 15, 521‐526. JURISICA, I., MYLOPOULOS, J. & YU, E. 2004. Ontologies for knowledge management: an information systems perspective. Knowledge and Information systems, 6, 380‐401 ...

  • Machine learning based landslide assessment of the Belgrade metropolitan area: Pixel resolution effects and a cross-scaling concept

    Uroš Đurić, Miloš Marjanović, Zoran Radić, Biljana Abolmasov (2019)
    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 ...
    klizišta, podložnost, mašinsko učenje

  • Application of stochastic models for mine planning and coal quality control

    Dejan Stevanović, Božo Kolonja, Ranka Stanković, Dinko Knežević, Mirjana Banković (2014)
    ... [5] Parker, H., The Volume Variance Relationship: A Useful Tool for Mine Planning, Engineering and Min- ing Journal, 180 (1979), 10, pp. 106-123 [6] Schofield, C. G., Homogenisation/Blending Systems Design and Control for Minerals Processing, TransTech Publications, Rockport, Mass., USA, 1980 [7] *** ...
    ... coal quality control is developed and consists of three sub-models: operational mine scheduling model, stocking model and reclaiming model, fig. 5. According simulated daily or shift mine plan each BWE has working bench position and pro- duction parameters. Mass and quality control will be done ...
    ... which should meet maximal efficiency of power plant and the environmental regulations. There is the need to control and to predict the quality of coal at the mine site to meet sulfur emission requirements. Coal quality control between the mine site and the utility plant is a complex problem owing to the variable ...

  • GNSS Time Series as a Tool for Seismic Activity Analysis Related to Infrastructure Utilities

    Sanja Tucikešić, Ankica Milinković, Branko Božić, Ivana Vasiljević, Mladen Slijepčević (2021)
    GNSS, Time series, Seismic deformations, Earthquake, Infrastructure utilities

  • Building learning capacity by blending different sources of knowledge

    Ivan Obradović, Ranka Stanković, Olivera Kitanović, Dalibor Vorkapić (2016)
    ... software solutions, and customize it to the needs of BAEKTEL. To that end a review of most popular open source Digital Asset Management (DAM) systems was performed, and three of them were taken in consideration for BMP: NotreDAM, ResourceSpace and DSpace. After comparing and analysing the three ...
    ... informatics and geoinformatics. She received her Master’s degree in 2000 and Ph.D. 2009 at the Department for Computer science, Faculty of Mathematics University of Belgrade. She is interested in semantic web, information systems, database modelling, geoinformation management and artificial i ...
    ... further advances in the sharing of educational ideas, materials, and knowledge. Social networking, blogs, wikis, cognitive tutors, virtual learning communities, and especially web- based learning management systems (LMS) are being more and more used in TEL (Rhoads, Berdan & Toven‐Lindsey, 2013). ...

  • Valorization of non-balanced coal reserves in Serbia for underground coal gasification

    David Petrović, Lazar Kričak, Milanka Negovanović, Stefan Milanović, Jovan Marković, Nikola Simić, Ljubisav Stamenić (2019)
    In the name of a better and safer energy future, it is our responsibility to focus our knowledge and activities to save on imported liquid and gas fossil fuels, as well as coal on which energy security of Serbia is based. The rationalization in the use of available energy resources certainly positively affects economy and the environment of a country. This paper indicates motivations for the application of the underground coal gasification process, as well as surface gasification for ...
    ugalj, gasifikacija, zaštita životne sredine, skladištenje, solarna
    ... Mining, Geology and Civil Engineering, Tuzla, Yugoslavia, 1987 3] Ag Mohamed, Acheick., et. al., Viability of UCG with Carbon Capture and Storage, 600 UCG Final Re- port, University School of Public and Environmental, Bloomington, Ind., USA, 2011 4] Petrović, D., ef al., Status and Tendecies under ...
    ... gasification of solid fuel at normal pressure, obtained is a gas or gas mix- ture that consists of CO, CO», and H», and at elevated pressures and temperatures (in particular with the current UCG systems), CH, is also present. Generated gas mixture is similar to natural gas. If a vapor-oxygen mixture is ...
    ... onsite combustion, without any personnel involved, and equipment placed underground. Also, there is no need for investments in expensive process equipment, as well as conveyer or tube transportation systems for slag and ash to landfills. Considering these benefits indicates how significant economic ...

  • A WebGIS Decision Support System for Management of Abandoned Mines

    Ranka Stanković, Nikola Vulović, Nikola Lilić, Ivan Obradović, Radule Tošović, Milica Pešić-Georgiadis (2016)
    ... legal, control and monitoring activities in realization of the mineral strategy, mineral policy and the concept of sustainable development in the mineral industry of Serbia. Acknowledgments: This research was supported by the Serbian Ministry of Education and Science under the grant #TR 33039 and Republic ...
    ... closely linked and compatible with KaNaKov to avoid duplication of resources and to ensure that full synergies are achieved. 4. Materials and Methods 4.1. Geodatabase Model The geodatabase model was developed using Unified Modeling Language (UML) and Computer-Aided Software Engineering (CASE) tool ...
    ... tion of the relevant activities within their competence. In particular, this includes the legislative and legal, as well as control and monitoring activities related to geological exploration and exploitation, but also the legal obligation of reclamation. There is also a specific indirect importance ...

  • Definition of Circulation Conditions and Groundwater Genesis of the Complex Krupaja Hydrogeological Karst System (Eastern Serbia)

    Ljiljana Vasić, Saša Milanović, Tina Dašić (2023)
    Management, Monitoring, Policy and Law,Renewable Energy, Sustainability and the Environment, Geography, Planning and Development, Building and Construction
    ... Materials and Methods The Krupaja system represents one of the most complex karst systems within the Beljanica karst massif, and as such, it is of greatimportance for the study of karst ground- water genesis, the depth of cold, subthermal, and thermal groundwater karst channels, and groundwater ...
    ... can be very diverse, starting from the wish to discover the new and unknown (e.g., through speleological and speleo diving, research), all the way to completely scientific research and research related to solving a specific engineering / geological problem or hydrotechnical problem. Analysis of the ...
    ... Beljanica massif, elsewhere, there are several, more complex systems with deep siphonal circulation of groundwater of subthermal and thermal character, among, which the Suvi Do and Krepoljinska Banjica System, the Sisevac System, and the Krivi Vir System stand out [12,21], as well as the Mlav ...

  • Influence of mono- and two-component organic modifiers on determination of lipophilicity of tetradentate Schiff bases

    Nikola Stevanović, Aleksandar Mijatović, Aleksandar Lolić, Mario Zlatović, Rada Baošić (2021)
    Ispitivani su uticaji primene mono- i dvokomponentnih organskih modifikatora na određivanje lipofilnosti 12 tetradentatnih Šifovih baza metodom reverzno-fazne tankoslojne hromatografije. Osnovni cilj je da se proceni tip interakcije između posmatranih jedinjenja i komponenti primenjenih hromatografskih sistema i uspostavi neki obrazac ponašanja kako bi se lakše izabrala kombinacija organskih modifikatora koji će simulirati interakciju u biološkim sistemima na osnovu činjenica da iste osnovne intermolekularne interakcije su odgovorne za ponašanje supstanci i u biološkom i u hromatografskom sistemu. Primenjeni organski modifikator ...
    Šifove baze, Lipofilnost, RP-TLC, Organski modifikatori

  • Cutting Resistance Laboratory Testing Methodology for Underwater Coal Mining

    Vladimir Čebašek, Veljko Rupar, Stevan Đenadić, Filip Miletić (2021)
    Geology,Geotechnical Engineering and Engineering Geology
    ... Strength and Deformability of Rock Materials; International Society for Rock Mechanics and Rock Engineering: Lisbon, Portugal, 1979. 24. Radojević, J. Rock Mechanics; University of Belgrade—Faculty of Mining and Geology: Beograd, Serbia, 1992. 25. Braja, D. Principles of Geotechnical Engineering; CENGAGE: ...
    ... conditions of mining, i.e., cutting. Keywords: cutting resistance; underwater mining; coal 1. Introduction Continuous mining systems, including bucket-wheel excavators (BWE) and bucket- wheel dredges (BWD), have been used in high-volume mining operations for decades. These excavators offer some advantages ...
    ... conditions of mining, i.e., cutting. Keywords: cutting resistance; underwater mining; coal 1. Introduction Continuous mining systems, including bucket-wheel excavators (BWE) and bucket- wheel dredges (BWD), have been used in high-volume mining operations for decades. These excavators offer some advantages ...

  • An aproach to Implementation of blended learning in a university setting

    Ivan Obradović, Ranka Stanković, Olivera Kitanović, Jelena Prodanović (2011)
    ... creating Internet-based courses and web sites developed using the PHP scripting language (Hypertext Preprocessor), with a SQL type data base (for example MySQL, PostgreSQL, Microsoft SQL Server or Oracle). It can be run on Windows and Mac operating systems and many flavors of Linux. A particularly ...
    ... clients. LITERATURE [1] Devedzic, V., Education and The Semantic Web, International Journal of Artificial Intelligence in Education (IJAIED), Vol.14, No.2, pp.39-65, 2004. [2] Paulsen, M.F., Online Education and Learning Management Systems – Global E-learning in a Scandinavian Perspective ...
    ... 2009. [5] Devedžić V., Semantic Web and Education, Springer, 2006. [6] Bouzeghoub, A. Elbyed, A., Ontology Mapping for Web-Based Educational Systems Interoperability, IBIS – International Journal of Interoperability in Business Information Systems, No.1, pp.73-84, 2006. [7] Bianchi,S. ...

  • The optimization of auxiliary machinery in open-cast lignite mines: a case study of bulldozers

    Dragan Ignjatović, Predrag Jovančić, Stevan Đenadić, Ivan Janković, Ivica Ristović (2019)
    One of the most important prerequisites for the successful operation of the open-cast lignite mine is to carry out all the auxiliary works timely with the necessary quality. The most important and most commonly used auxiliary machines are bulldozers. Engaging time of bulldozers use is in direct relation with the coefficients of the time and capacity utilization of the continuous system for the excavation of coal and tailings, which indicates their importance. More than 100 bulldozers have been hired ...
    open-cast coal mine, auxiliary works, bulldozers, optimization, availability
    ... reduce the operational and maintenance costs, increase the volume of auxiliary works and create conditions for maximal utilization of Excavator — Conveyor — Stacker and Excavator — Conveyor — Crusher systems. In another word, these activities will increase time utilization and production rate utilization ...
    ... Education and Science of the Republic of Serbia within the framework of Programme of research in the field of technological development for the period 2011-2019. REFERENCES 1. Optimizing organization, resources and costs of auxiliary mechanization to increase utilization of overburden and coal systems on ...
    ... continuous systems. Below is an example with CAT DSR and Shangai PD320Y-1. Optimal replacement те is established, based оп diagrams ог availability of these dozers (declining trend of technical availability coefficient of bulldozers in Kolubara basin for first ten years of operation) and limiting ...

  • 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 ...
    nafta, proizvodnja, optimizacija, Amal, Libija
    ... 378-385. Gravel Packing and Sand Control, Developments in Petroleum Science, Volume 26, 1989, Pages 699-842. Guerrero-Sarabia I., Fairuzov Y.V. (2013) Linear and non-linear analysis of flow instability in gas lift wells, Journal of Petroleum Science and Engineering, In Press, Accepted Manuscript ...
    ... oils and model systems studied by high-pressure NIR spectroscopy, Energy & Fuels,16,1287-1295. Nazmul H., Rahmani G., Tadeusz D., Jacob M. (2005). Settling properties of asphaltene aggregates, Energy & Fuels, 19,1099 -1108. Nikolaou M. (2013) Computer-aided process engineering in oil and gas ...
    ... Souza J.N.M., Medeiros J.L., Costa A.L.H., Nunes G.C (2010) Modeling, simulation and optimization of continuous gas lift systems for deepwater offshore petroleum production, Journal of Petroleum Science and Engineering, Volume 72, Issues 3–4, 277-289. Tian H., Deng J.G., Meng Y.S., Zeng X.L., Sun ...

  • 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 ...
    nafta, proizvodnja, optimizacija, Amal, Libija
    ... 378-385. Gravel Packing and Sand Control, Developments in Petroleum Science, Volume 26, 1989, Pages 699-842. Guerrero-Sarabia I., Fairuzov Y.V. (2013) Linear and non-linear analysis of flow instability in gas lift wells, Journal of Petroleum Science and Engineering, In Press, Accepted Manuscript ...
    ... oils and model systems studied by high-pressure NIR spectroscopy, Energy & Fuels,16,1287-1295. Nazmul H., Rahmani G., Tadeusz D., Jacob M. (2005). Settling properties of asphaltene aggregates, Energy & Fuels, 19,1099 -1108. Nikolaou M. (2013) Computer-aided process engineering in oil and gas ...
    ... Souza J.N.M., Medeiros J.L., Costa A.L.H., Nunes G.C (2010) Modeling, simulation and optimization of continuous gas lift systems for deepwater offshore petroleum production, Journal of Petroleum Science and Engineering, Volume 72, Issues 3–4, 277-289. Tian H., Deng J.G., Meng Y.S., Zeng X.L., Sun ...

  • 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
    ... in mining and 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 ...
    ... analyzed the exploitation effects of coal systems at the open–pit mine Tamnava–West field for the first six months of the current year. The analysis was performed in the aspect of reached production, coal quality, effective working time, capacity and time utilization and system stoppage using multicriteria ...
    ... king 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 Mineralnymi – Mineral Resource Management, 25, 37-56; [6] Hwang, C. L., & Yoon, K. (1981). Methods for multiple ...

  • 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
    ... Fundamentals and Long-Stroke Rod Pumping, University of Miskolc, Hungary [10] 4PI Technical report IIL fifth edition, Jun 2008. [11] Ahmet, T., 2000: Resevoir Engineering Handbook, Gulf Publishing, USA [12] Design Calculation for Sucker Rod Pumping Systems (Conventional Units) [13] THETA OILFIELD ...
    ... of sucker rods and wave effects in pumping systems. 34 — QROD - Utilizes the wave equation for the analysis and optimization of sucker rod pumping systems, focusing on dynamic responses and system performance. — PROSPER - This software uses the wave equation to simulate and analyze dynamic ...
    ... required power and capacity, and ensuring optimal system efficiency. It is also important to account for the specific characteristics ofthe reservoir and the challenges associated with equipment and system maintenance. Proper design can maximize the performance of sucker rod pump systems and reduce operational ...

  • Multiple-Criteria Decision-Making in Mine Development Planning

    Sanja Bajić (2023)
    The Borska Reka ore deposit is an experimental location where developed methodologies have been applied. It is the largest ore body within the Bor mining complex, which has been the subject of numerous studies and analyses for more than three decades. The paper focuses on the application of FAHP and the VIKOR method to address ranking of alternatives and select the optimal mining method by means of fuzzy multicriteria optimization.

  • Споменица 1991. – 2015. година: 135 година геологије и 70 година рударства на Универзитету у Београду

    главни и одговорни уредник Душан Поломчић (2016)
    Рударско-геолошки факултет
    ... Monte Carlo simulation and fuzzy numbers, Simulation: Transactions of the Society for Modeling and Simulation International, 2011. 76. Batalović V., Danilović D., Karović-Maričić V.: Hydraulic lift systems with piston type pump, Journal of Petroleum Science and Engineering 2011, 2011. 77. Burić ...
    ... Dependability Evaluation for Multi-hierarchical Systems Based on Max–Min Composition. Quality and Reliability Engineering International, Vol. 29, No. 3, pp. 317–326. IVEZIĆ D., PETROVIĆ T., 2010: Robust IMC Controllers with Optimal Setpoints Tracking and Disturbance Rejection for Industrial Boiler. ...
    ... i Niezawodnosc – Maintenance and Reliability, 14 (4), 333–341. TANASIJEVIĆ M., IVEZIĆ D., JOVANČIĆ P., ĆATIĆ D., ZLATANOVIĆ D., 2013: Study of Dependability Evaluation for Multi-hierarchical Systems Based on Max–Min Composition. Quality and Reliability Engineering International, 29 (3), 317– 326 ...

  • Modeliranje tehnoloških procesa u rudarstvu u uslovima nedovoljnosti podataka primenom teorije grubih skupova

    Zoran M. Štirbanović (2015-07-01)
    Rudarstvo, a u okviru njega i priprema mineralnih sirovina, se odlikuje složenošću tehnoloških procesa što je posledica velikog broja uticajnih parametara. Samim tim je potrebno biti veoma obazriv prilikom donošenja odluka u oblasti rudarstva. U cilju što efikasnijeg funkcionisanja procesa, moguće je primeniti različite metode koje služe za pojednostavljenje procesa odlučivanja. Jedna od takvih metoda jeste i teorija grubih skupova. Ona predstavlja relativno novu matematičku teoriju koja je pogodna za razumevanje nepreciznih i nepotpunih podataka kao i za otkrivanje ...
    rudarstvo, priprema mineralnih sirovina, teorija grubih skupova, višekriterijumsko odlučivanje, flotacijsko jalovište, flotacijski kolektor, flotaciona mašina
    ... Networks in Engineering ANNIE 2005, St. Louis, Missouri, November 7–9, 2005. 42. T. Maciag, D. Hepting, D. Slezak, Personalizing User Interfaces for Environmental Decision Support Systems, Proceedings of International workshop on Rough Sets and Soft Computing in Intelligent Agent and Web Technologies ...
    ... Proceedings of International Conference on Computational Intelligence and Software Engineering (CiSE), Wuhan, China, December 10–12, 2010. 45. L. Feng, Water Treatment Plant Decision Making Using Rough Multiple Classifier Systems, Procedia Environmental Sciences 11, 2011, pp. 1419–1423. 46. R. H ...
    ... Munakata, Z. Pawlak, Rough control application of rough set theory to control, Fourth European Congress on Intelligent Techniques and Soft Computing, Aachen, Germany, September 2 – 5, 1996, Proceedings, Volume 1, pp. 209–218. 3. Z. Suraj, An Introduction to Rough Set Theory and Its Applications, ICENCO’2004 ...