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Упит dcterms_subject_txt:production control

295 items

  • A WebGIS Decision Support System for Management of Abandoned Mines

    Ranka Stanković, Nikola Vulović, Nikola Lilić, Ivan Obradović, Radule Tošović, Milica Pešić-Georgiadis (2016)
    ... important for the implementation 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 ...
    ... location, contact person, addresses, phones, emails, web site URL, municipality and administrative area, tax identification number, etc. Domain control for specific data is based on a common vocabulary, integrated in the database and application. All data related to one company, like permits, field ...
    ... mineral resource management, ecology management, energy generation, but also management within official bodies, responsible for legislative legal, control and monitoring activities in realization of the mineral strategy, mineral policy and the concept of sustainable development in the mineral industry ...

  • 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
    ... with load cells and position sensors, a pump shut-off control device, a control panel, and a motor drive, and in some cases, a variable-speed drive. Additionally, a radio for receiving and sending information to/from SCADA (Supervisory Control and Data Acquisition) systems is required. Due to i ...
    ... diagnosing the operation of a deep well pump in oil production Maja Trikić Дигитални репозиторијум Рударско-геолошког факултета Универзитета у Београду [ДР РГФ] Application of machine learning for diagnosing the operation of a deep well pump in oil production | Maja Trikić | | 2024 | | http://dr.rgf.bg ...
    ... represents a key advantage of applying this technology. 2. ROLE AND FUNCTION OF DEEP WELL PUMPS IN OIL PRODUCTION 2.1 Overview of deep well pumping systems In practical applications, oil production is most commonly achieved through deep well pumping using rod pumps. Figure 2.1 illustrates a deep ...

  • Towards a Mining Equipment Ontology

    Ranka Stanković, Ivan Obradović, Olivera Kitanović, Ljiljana Kolonja (2012)
    ... registering of realized an planned production for each day, month and year, as well as for each type of material (coal or overburden) the excavator worked with. The data on the mechanization operation are used for creating reports that show the realized and planned production for a specific period, the realized ...
    ... software supporting RudOnto has been integrated in the SUKU information system, as this system strongly relies on this resource. Namely, in order to control the feature values within an information system it is necessary to create sets of terms that represent the acceptable values for specific features ...
    ... General Interface with its GridViewPros and BiblRgf libraries contains a template of the classes used for different types of data search, domain control, selection of domain elements, and implementation of hierarchical data structures in the form of trees. The business logic of the system is implemented ...

  • A Fuzzy Expert Model for Availability Evaluation

    Dejan Ivezić, Miloš Tanasijević, Predrag Jovančić, Radiša Đurić (2019)
    Each technical system within itself carries the great potential danger of possible occurrence of failure and damages. Mining machines are characteristic by great investment values, costs of unplanned shutdowns, complex working conditions, and environment and workers hazards. Systematic monitoring of the mining machinery is of great importance for the management of the mining companies. Availability is the overall concept of quality of service. Includes information regard to operating state, an idle state, a standby state and shut down. The ...
    raspoloživost, ekspertski sistem, fazi teorija, buldozeri
    ... Availability Evaluation | Dejan Ivezić, Miloš Tanasijević, Predrag Jovančić, Radiša Đurić | Proceedings of the 2019 20th International Carpathian Control Conference (ICCC) | 2019 | | http://dr.rgf.bg.ac.rs/s/repo/item/0005043 Дигитални репозиторијум Рударско-геолошког факултета Универзитета у Београду ...

  • Ograničenja primene optimizacionih algoritama u slučaju kopova

    Dejan Stevanović, Mirjana Banković, Milica Pešić Georgiadis, Petar Marković, Dejan Ranković (2020)
    Proces optimizacije površinskih kopova, kao sastavni deo strateškog planiranja, veoma je važan sa stanovišta ostvarivanja maksimalnih efekata proizvodnje. To je složen zadatak koji vrlo često podleže vrlo strogim geometrijskim i drugim praktičnim rudarskim ograničenjima. Ova ograničenja u posebno su izražena na površinskim kopovima uglja, te u značajnoj meri mogu povećati stepen neizvesnosti rudarskog projekta, odnosno izazvati neželjena dejstva u pogledu profitabilnosti poslovanja. Iz tog razloga, veoma je važna primena savremenih optimizacionih alata, koji u značajnoj meri mogu olakšati celokupan ...
    ... Banković M., Stevanović D., Pešić M., Tomašević A. & Kolonja B.: Improving Efficiency of Thermal Power Plants Through Mine Coal Quality Planning and Control. Thermal Science, 22(1B), pp.721-733, 2017 Benndorf J.: Investigating the variability of key coal quality parameters in continuous mining operations ...
    ... Srbije, pp. 952-960, ISSN 0040-2176, 2014 Stevanović D., Banković M., Pešić Georgiadis M., Stanković R.: Operational Mine Planning and Coal Quality Control: Case Study Tamnava West, Tehnika, Special edition, Savez inženjera i tehničara Srbije, pp. 41-51, ISSN 0040-2176, UDC: 62(062.2) (497.1), 2015 ...
    ... mine optimization, as an integral part of strategic planning, is very important from the point of view of achieving maximum economic efficiency of production. It is a complex task that is very often subject to very strict geometric and other practical mining restrictions. These limitations are particularly ...

  • Analogue modelling of strain partitioning along a curved strike-slip fault system during backarc-convex orocline formation: Implications for the Cerna-Timok fault system of the Carpatho-Balkanides

    Nemanja Krstekanić, Ernst Willingshofer, Taco Broerse, Liviu Matenco, Marinko Toljić, Uroš Stojadinović (2021)
    analogno modelovanje, raspodela deformacija, geometrija indentera, Černa i Timok rasedni sistem
    ... deformation around the NW corner of the indenter creating oblique-slip normal faults (splaying in Fig. 5d, g, h, k, l, 7b). These oblique-slip faults control the subsidence in this NE-SW to E-W oriented basin north of the indenter, which is connected to the main N–S oriented basin along the western margin ...
    ... southwards with subsequent deformation and rotation (i. e., in the direction away from the pole of rotation). Transtensional (dextral-normal) faults control the subsidence and bound the basin to the west and east (structures 2 and 3 in Fig. 8c). Structure 2 accom- modates a larger amount of deformation ...
    ... dextral slip is transferred into dominantly NNW- to N-dipping normal faults (structure 5 in Fig. 8c and d and cross-section a-a’ in Fig. 8e) that control sedi- mentation in the basin. The offsets along these faults are significantly smaller than along faults controlling the N–S oriented basin and, ...

  • 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

  • Upravljanje proizvodnjom nafte – novi alat na bazi fazi logike

    Мирослав Црногорац, Душан Даниловић, Лола Томић (2020)
    ... the authors have tried to look at the problems arising in the work of incoming quality control in one company in Zrenjanin and to provide an adequate set of proposals in aim to avoid destabilization of the production process, reduction of productivity and the cost of additional testing of materials. ...
    ... Incoming Quality Control, https://www.qdatahub.com/q-shop-data- collection-system/incoming-quality-control/ (posećeno oktobra 2020.) [6] Anjoran, R., The Importance of Incoming Quality Control of PCB Components, https://www.cmc-consultants.com/blog/the-importance- of-incoming-quality-control-of-pcb-components ...
    ... show the advantage of modern systems on the example of large - scale production, the importance of the preparation of production for the total time and production costs. Keywords: Optimization, CNC, milling machine, production preparation, costs. UVOD U doba modernih informacionih tehnologija ...

  • Mineral Resources of Serbia: Environmental, Societal and Economic Challenges

    Vladimir Simić, Rade Jelenković, Dragana Životić (2019)
    ... as secondary and micronutrients. Weed control is one of the most important factors in successful soybean production. Soybeans cannot compete with weeds in the early part of the growing season. Herbicides, or cultivation, or both, are often needed to control weeds until the soybeans have developed ...
    ... yield and stability in agriculture production. The nutrition variant had a higher grain yield than the control (5,860 kg ha"! and 5,604 kg ha'!, respectively). The average yields in the nutrition variant were higher by 256 kg ha'!!, or 4.57%, compared with the control. Nutrition proved to be a feasible ...
    ... . and rural development, innovative agriculture production technologies accounting for the effects of climate changes. The environmental pollution issues, including their economic and societal effects, as well as the challenges of their control, are also covered in the book. Although the list ...

  • 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
    ... gravel pack sof sand control well. J.ChinaUniv.Petrol.24 (5), 49–51. Worldlook (2010), Worldlook at reserves and production, Oil and gas journal, Vol. 106, No. 48, 23-24. Xiang W.T., Wang P.S., (2003) Application of bridging theory on saucier gravel to examine the sand control effect, SPE80450 ...
    ... reflected in the original model for a solution of the production problems at the Amal oilfield. The proposed solutions can improve production problems solution, provide more efficient management of the production process and increase oil production. In addition to its importance for the Amal oilfield ...
    ... MODEL FOR ACHIEVING OPTIMUM PRODUCTION AT AMAL OILFIELD Summary In this doctoral dissertation, it has analyzed the problems of oil production and application of methods for their solutions at the Amal oilfield. It has also provided a brief presentation of oil production in Libya, its characteristics ...

  • Using technology for knowledge transfer between academia and enterprises

    Ivan Obradović, Ranka Stanković (2014)
    ... integrated within the TEL platform’s LMS to provide a synergy of functionalities for efficient realization of the proposed approach. A backend control panel within the platform will enable teachers in the academic environment to track the progress of students while using the learning resources, ...
    ... assistants (TA) and publish their own educational materials on the platform. As for the entrepreneurial environment, the TEL platform’s backend control panel provides similar opportunities for tracking the progress of graduate students who started to work in companies and are now involved in life-long ...
    ... HE institutions and enterprises in the Western Balkans. Another objective is to provide training for members of universities and enterprises for production of OER materials. The third objective is to produce materials in various languages, in video, audio and textual format, supported by electronic ...

  • Primena programa UVSZ pri zaštiti od miniranja

    Suzana Lutovac, Miloš Gligorić, Jelena Majstorović, Luka Crnogorac, Rade Tokalić (2021)
    Primena energije eksploziva tj. miniranje, predstavlja osnovni način eksploatacije čvrstih mineralnih sirovina u rudarstvu. Miniranjem se postižu vrlo povoljni tehnoekonomski pokazatelji, koje nažalost prate i negativni efekti miniranja. U cilju zaštite životne sredine potrebno je za svaku radnu sredinu odrediti jednačinu oscilovanja stenske mase pri miniranju. Ova jednačina definiše promenu brzine oscilovanja stenske mase u zavisnosti od rastojanja, količine eksploziva, uslova izvođenja miniranja i geoloških karakteristika stenske
    Program UVSZ, miniranje, potres, zaštita životne sredine
    ... velocity for each subsequent blasting in a given working environment. On that way, shocks from blasting, in a seismic sense, are brought under control. In this paper, the application of UVSZ program is shown, which is used for analysis and presentation of measured data at PC. Key words: UVSZ ...
    ... oscillation velocity for each subsequent blasting in a given working environment. On that way, shocks from blasting, in a seismic sense, are brought under control. In this paper, the application of UVSZ program is shown, which is used for analysis and presentation of measured data at PC. Key words: UVSZ program ...

  • Upper Miocene depositional environments of the Kikinda-Mokrin High (Serbia)

    Saša Ivanišević, Dejan Radivojević (2018)
    Exploration for oil and gas in mature areas, such as the Pannonian Basin, can benefit from reexamination of old data using more advanced modern workflows that focus on the temporal and spatial aspects of sediment deposition. Specifically, we apply a new environment of deposition model that interprets the Upper Miocene- Pliocene sediments as being deposited in a rapidly filling basin characterized by quick shelf edge progradation from the northwest toward the southeast. Reconstruction of this shelf edge trajectory reveals ...
    naftna geologija, depozicione sredine, formacije, Panonski basen

  • Управљање радом центрифугалних компресора

    Младен Благојевић (2024)
    Овај мастер рад се бави анализом и управљањем рада центрифугалних компресора у индустријским постројењима, са посебним освртом на управљачке системе који осигуравају њихов ефикасан рад. Рад обухвата разматрање различитих система за регулацију протока, притиска и примену савремених метода регулације као што су повратна и напредна. Такође, анализиране су динамичке промене у раду компресора, утицај поремећајних величина и могућности оптимизације. Резултати су показали да правилна примена управљачких система не само да спречава пумпање, већ и повећава стабилност и продуктивност целокупног ...
    центрифугални компресори, управљање компресорима, проток притисак, повратна регулација, напредна регулација, оптимизација
    ... Op3HHe poropa om 60% o 120% oJl HOMHHaJIHe BpejHoOcTH. Ejumnce Ha upTexxy OJ1TOBapajy KOHCTaHTHHM BpeJIHOCTHMa ce(biKacHOcCTH KOMIIpecopa 1 Process Control for Compression Systems, Article in Journal of Engineering for Gas Turbines and Power, August 2017. 35 140 120 Pri tis ak - % { st ep ...
    ... HJIH IIDpOMeHHTH pajiHy TauKy Ca CIIOJPbaIIPbe Ha JIOKAJIHYy. Anaynna rpepBeHnuje ryOuTaka nokayyjJe Ja Je noMohHu yripaBJbaukH Kpyr (epri. surge control loop) noOpo pememe 3a cBe HHaMHuKe KOMITIpecope. IIloMohHuH ynpaBJbaukH KpyT JIeTeKTyJe II0jaBy IIyMIaFba H HiIpe)ly3HMa yHarnpeji rporpaMupaHc Mepe ...
    ... com/blog/how-do-centrifugal-compressors-work/. . AyroMaTcka peryznanuja KoMiipecopa, 3aBpmrnu paji, Kpacrajar Bakuh, 3arpeo 2015. · Process Control for Compression Systems, Article in Journal Engineering for Gas Turbines and Power, August 2017. .· Linkedin Article, URL: https://www.linkedin ...

  • From DELA Based Dictionary to Leximirka Lexical Database

    Biljana Lazić, Mihailo Škorić (2020)
    In this paper, we will present an approach in transforming Serbian language Morphological dictionaries from a DELA text format to a lexical database dubbed Leximirka. Considering the benefits of storing data within a database when compared to storing them in textual documents, we will outline some of the functionality that the database has made possible. We will also show how hand-made rules that use category labels lexical entries are marked with can be used to link lexical entries. ...
    Morfološki rečnici, jezički resursi, Leksimirka
    ... various information assigned to DELAS entries. The application used several Unitex modules that enable the production of DELAF forms for each selected DE- LAS form (for paradigm checking) or the production of a complete DELAF dictionary from a chosen DELAS file. Opportunities for working with dictio- naries ...
    ... database was conducted. During the transfer of data to the database some errors were discovered, that inevitably occur when working without automatic control of data entry. It happened that category labels were misspelled due to typographical errors; markers were used for the same concept and one marker ...
    ... used system Leximir based on DELA dictionary textual files. As noted in the paper, the new system has brought about many advantages in terms of entry control, au- tomatic vocabulary enrichment, multiuser work, and the establishment of relationships among lexical entries. The plan is to add new rules and ...

  • Understanding partitioning of deformation in highly arcuate orogenic systems: Inferences from the evolution of the Serbian Carpathians

    Nemanja Krstekanić, Liviu Matenco, Marinko Toljić, Oleg Mandić, Uroš Stojadinović, Ernst Willingshofer (2020)
    orogeneza, oroklini, višesmerna ekstenzija, transkurentna kretanja, Srpski Karpati
    ... basement in the centre of the studied area, while northwards and southwards they control the onset of early middle Miocene deposition in the Žagubica and Krivi Vir Basin. Furthermore, similar E-W oriented normal faults control the early middle Miocene onset of deposition in large intramontane basins outside ...
    ... was pro- jected at depth and correlated with other existing surface and depth constraints. The eastern part of these profiles has less structural control at depth and, therefore, our surface to depth projection has a higher degree of uncertainty. 3.1. NW-SE to NE-SW oriented shortening in the vicinity ...
    ... observations in the latter area is reduced. A higher density of such normal faults is observed near the Senje–Resava Basin, where they appear to control the Oligocene–early Miocene sedimenta- tion (e.g., sites De9 and Cg7, structures 10 and 13 in Fig. 7) and are truncated by the subsequent Upper Getic ...

  • Primena ubrzane konsolidacije kod izgradnje nasipa na deonici priključka Novi Beograd – Surčin autoputa ,,Miloš Veliki"

    Aleksa Tomičić (2024)
    Problem koji se javlja prilikom izgradnje objekata na ne konsolidovanom stišljivom tlu jeste pre svega vezan za prevelika sleganja tla usled opterećenja od objekata, najčešće su to objekti putne infrastrukture (nasipi), ili stambeno poslovni objekti. U tu svrhu se,primenjuju različiti vidovi ubrzanja konsolidacije tla. Stoga za potrebe izrade završnog rada Master akademskih studija studijskog programa geotehnika, na Rudarsko-geološkom fakultetu, izvršena je analiza dva najčešće korišćena postupka ubrzanja konsolidacije: predopterećenjem i ugradnjom peščanih drenova. Glavni cilj ovih postupaka je ...
    stišljivo tlo, konsolidacija, ubrzanje konsolidacije, predopterećenje, peščani drenovi

  • Inhibitory effect of platinum and ruthenium bipyridyl complexes on porcine pancreatic phospholipase A2

    Tina Kamčeva, Jörg Flemmig, Bojana Damnjanović, Jürgen Arnhold, Aleksandar Mijatović, Marijana Petković (2011)
    Fosfolipaza pankreasa A2 (PLA2) igra važnu ulogu u ćelijskoj homeostazi kao iu procesu karcinogeneze. Efekti metalo-lekova koji se koriste kao hemoterapeutici na aktivnost ovog enzima nisu poznati. U ovom radu, interakcija između PLA2 svinjskog pankreasa i dva odabrana kompleksa prelaznih metala — tetrahloro(bipiridin) platine(IV) ([PtCl4(bipi)]) i dihloro (bipiridin) rutenijum(III)hlorida ([RuCl2(bipi)2) ]Cl)—proučavana je. Laserska desorpcija/jonizacija uz pomoć matriksa, vremenska masa spektrometrija (MALDI-TOF MS) i fluorescentna spektroskopija korišćeni su za analizu aktivnosti enzima u odsustvu i prisustvu metalnih kompleksa i za ...
    Metals and Alloys, Biochemistry, Biomaterials, Biophysics, Chemistry (miscellaneous)
    ... PLA2 c = 0.02 mg ml�1 in 50 mM Tris-HCl buffer (37 1C and pH = 8.5) was prepared and applied on the sample plate premixed with sinapic acid, as control. Metal complexes were dissolved in the same buffer to different final concentrations and incubated with the enzyme for three hours and then applied ...
    ... of PLA, c = 0.02 mg ml"! in 50 mM Tris-HCl buffer (37 °C and pH = 8.5) was prepared and applied on the sample plate premixed with sinapic acid, as control. Metal complexes were dissolved in the same buffer to different final concentrations and incubated with the enzyme for three hours and then applied ...
    ... secretory PLA2 is distributed throughout the gastrointestinal tract and is particularly abundant in pancreas and duodenum.49 This enzyme is involved in control of secretin release, which is important for water homeostasis and overall metabolism. The association of pancreatic PLA2 with cancer progression ...

  • 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
    ... Environ. Med. 2014, 56, e108–e130. 63. O’Neal, R.D.; Hellweg, R.D.; Lampeter, R.M. Low frequency noise and infrasound from wind turbines. Noise Control. Eng. J. 2011, 59, 135. 64. Pleban, D.; Radosz, J.; Smagowska, B. Noise and Infrasonic Noise at Workplaces in a Wind Farm. Arch. Acoust. 2017, ...
    ... spatial determination for the wind turbines at the very beginning of a project’s development. This means that there is no need to wait for the production of an EIA at the level of project documentation, because it brings certain risks for investors and for the project itself, given that at that stage ...

  • Mean-based iterative methods for finding multiple roots in nonlinear chemistry problems

    Dejan Ćebić, Nebojša M. Ralević (2021)
    нелинеарне једначине, поступци засновани на срединама, вишеструки корени,