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Упит dcterms_subject_txt:Connected Linear Network Process

615 items

  • VENTEX: An Expert System for Mine Ventilation Systems Analysis

    Ranka Stanković, Nikola Lilić, Ivan Obradović (1996)
    Analiza sistema za ventilaciju je komleksan proces, koji bazira na proračunu brojnih parametara, koji se odnose na: stanje mreže, provetrenost, stabilnost sistema, gubitke vazduha, klimatske uslove, gasno stanje, ugroženost od požara i opasne prašine. Navedeni problemi se uspešno rešavaju paketom SimVent, ali potpuno razumevanje i korišćenje dobijenih rezultata zahteva angažovanje iskusnog specijaliste iz oblasti ventilacije. Rešenje je nađeno u kreiranju ekspertnog sistema VENTEX, čija je baza znanja formalizacija ekspertskog znanja iz oblasti ventilacije rudnika. U radu je prikazana metodologija ...
    ekspertni sistem, ventilacija
    ... the following categories: the ventilation network, aeration of the mine, stability of the ventilation system, air loss, climate conditions, mine gas state, fire risk and harmful dust risk. Once the parameter values are obtained the estimation process for the general ventilation state of the ...
    ... strategy as well as the other objects in the system and their mutual relationships /Fig. 2/. The inheritance relations between hierarchically connected objects representing elements of the strategy are given by full lines, while the exchange of messages between classes is represented with dotted ...
    ... n system analysis are usually of a very complex nature. They involve the estimation of numerous interdependent parameters pertaining to the network status, ventilation status, ventilation system stability, air current losses, climate conditions, gas state, fire risk and dangerous dust pollution ...

  • Primary crusher site selection in open pit mines - case study in Sungun copper mine

    Ali Nasirinezhad, Dejan Stevanović, Dragan Ignjatović, Mehdi Rahmanpou (2021)
    Facility site selection, (such as Primary or in pit Crusher location) is one of the most important steps in mine de-sign process that has a significant impact on economy of the mining operation. This study covers an attempt to find the optimal location forprimary crusher in order to support the expansion of Sungun copper mine, which is the second largest open pit mine in Iran. Recent exploration drilling has led to a considerable increase in the ore reserve. Therefore, ...
    odabir lokacije, višekriterijumsko odlučivanje, analiza osetljivosti, Sungun rudnik bakra

  • Regional Slope Stability Analysis in Landslide Hazard Assessment Context, North Macedonia Example

    Miloš Marjanović, Biljana Abolmasov, Igor Peshevski, James Reeves, Irena Georgievska (2020)

  • Improving efficiency of thermal power plants through mine coal quality planning and control

    Mirjana Banković, Dejan Stevanović, Milica Pešić, Aleksandra Tomašević, Ljiljana Kolonja (2018)
    Главни циљ контроле квалитета угља у рудницима лигнита је снабдевање термоелектрана угљем чији квалитет мора да се креће унутар одређених квалитативних ограничења. Карактеристике угља могу да утичу на ефикасност, поузданост и расположивост како котла тако и јединица за контролу емисије. У овом раду аутори су презентовали интегрисану симулацију рударског процеса као нови приступ у истраживању променљивости калоричне вредности угља приликом експлоатације комплексног лежишта лигнита. Резултати таквог приступа омогућавају драгоцен увид у перформансе континуалног рударског система у смислу контроле променљивости ...
    mine planning, variability of coal quality, simulation, coal blending

  • Open Educational Resources in Serbia

    Ivan Obradović, Ranka Stanković, Marija Blagojević, Danijela Milošević (2020)
    Open educational resources, BAEKTEL, Metadata portal
    ... n. In Serbia, subject communities in the process of developing and publishing OERs usually cooperate with higher education institutions. In the process of collaboration, teachers and students have the possibility to get insight into the industry process, while the company gets scientific knowledge ...
    ... for developing, publishing and applying OERs and MOOCs in the teaching process With development of OER initiative in Serbia teachers developed knowledge and skills related to OERs. They introduced OERs in the teaching process, as a new way of knowledge transfer with a positive effect on students ...
    ... # - will be assigend by editors publishing process teachers also learn about licensing and possibilities in sharing and applying OER. -Learners are able to use OER in education or lifelong learning Beside traditional teaching/learning process in Serbia, blended learning is also very common ...

  • Damage quantification of built stone on Dark Gate (Belgrade, Serbia): sample of damage index application for decay rate evaluation

    Maja Franković, Nevenka Novaković, Vesna Matović (2015)
    The Dark Gate is the monument of culture, part of the cultural and historical complex of the Belgrade Fortress. It is constructed of limestone blocks that after 270 years of exposure to environmental conditions and different anthropogenic influences show wide ranges of decay forms. During 2007, detail registration of all built limestone microfacies and weathering forms was done using tools of monument mapping. A correlation scheme ‘‘intensity– damage category’’ was made according to the type, intensity, and distribution of ...
    Krečnjak, mapiranje, Indeks raspadanja, brzina raspadanja, progresija
    ... of mapping on the Dark Gate in 2007, linear damage index for the total facades was 3.01, and uniform values of damage indices to the north and south facades were noted. However, com- paring the east and west part of gate, it can be seen that the linear index has higher value on the eastern facade ...
    ... are in relation to gate”s orientation, too. The values of linear damage indices display insignif- icant differences between 2007 and 2014 for the entire gate as well as north and south facades. Nevertheless, the dif- ference of linear damage indexes from 2007 to 2014 is significantly higher ...
    ... 2— 510 >10 Mass of detaching stone material Medium · High _ Number and dimensions of fissures – Small Low Low Low Large _ brick, connected with lime mortar. 283 processed, rectan- gular, less often trapezoid stone blocks are embedded in the facade of the gate. An average size of blocks ...

  • Effectiveness Analysis of Different Bucket-wheel Excavators

    Stevan Đenadić, Predrag Jovančić, Dragan Ignjatović, Miloš Tanasijević, Filip Miletić (2021)
    Coal production in open-pit lignite mines in the Republic of Serbia is performed with continuous work systems. In addition to coal production, the same systems are used for the exploitation of large quantities of overburden. According to the reliability concept, continuous systems are in linear connection. If the failure occurs in one part of the system, that will produce a downtime of the entire system. The initial and most important factor of continuous systems is the bucket-wheel excavator. It ...
    bucket-wheel excavator, open-pit coal mine, mining, multi-criteria decision methods

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

    Ivan Obradović, Ranka Stanković, Olivera Kitanović, Jelena Prodanović (2011)
    ... teams, international organizations etc. Thus, for example, Esri Developer Network (http://edn.esri.com/) is an indispensible web location for this course. The course is designed to involve the students in the process of building systems for solving different kinds of problems. In the exercise ...
    ... Object-Oriented Dynamic Learning Environment) platform was also introduced in the process. Finally, depending on the nature of the courses offered at FMG, other software tools are also being used in the learning process, especially within ICT oriented courses. The current state of the blended learning ...
    ... interest in functionalities that were not supported by the existing FMG CMS, and at the same time, AMRES (Akademska mreža Srbije, Serbian Academic Network) launched an e-learning project (http://elearning.amres.ac.rs/moodle/) aimed at fostering a new approach to instruction at the University of Belgrade ...

  • Nonequilibrium athermal random-field Ising model on hexagonal lattices

    Svetislav Mijatović, Dragutin Jovković, Đorđe Spasojević (2021)
    Изингов модел, хексагонална решетка

  • Laboratory Testing of Nanosilica- Reinforced Silicate and Polyacrylamide Gels

    Irina Zahirovic, Dušan Danilović, Milica Šuput Vranjin, Miloš Tripković (2023)
    drilling fluid formulation, upstream oil and gas, fluid dynamics, fluid loss control, gel

  • 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
    ... sensor faults on surface dynamometric cards include: noisy card, linear card, rotated card, and card with inadequate load values. Additionally, the absence of a card, caused by sensor failures, can also be observed.A noisy card and a linear card typically result from grounding failures or cable faults ...
    ... downhole dynamometric cards: (a) linear card; (b) noisy card; (c, d) rotated card Although most commercial rod pump system controllers are equipped with alarms for sensor faults, some faults may go unnoticed by the controllers, particularly certain types of linear cards, noisy cards, and especially ...
    ... INTRODUCTION In modern oil industry, the efficiency and reliability of the production process play a crucial role in ensuring stable and economical operations. One of the most important elements in this process is the deep well pumps, which enable the extraction of oil from great depths of oil ...

  • Simple 2D gravity–density inversion for the modeling of the basin basement: example from the Banat area, Serbia

    Ivana Vasiljević, Snežana Ignjatović, Dragana Đurić (2019)
    We have developed a technique to calculate lateral density distribution of the sedimentary basin basement by combining linear gravity–density inversion and 2D forward modeling. The procedure requires gravity anomaly data, depth-to-basement data and density data for the sediments (density–depth distribution). Gravity efect of density variations in the basement was extracted from the total gravity anomaly by removing the joint efect of the sediments with vertical density variations and homogeneous basement of average density contrast (calculated by 2D modeling). Gravity ...
    funkcije raspodele gustine, lateralna raspodela gustine, karta gustine podloge

  • Hydrothermal Synthesized and Alkaline Activated Carbons Prepared from Glucose and Fructose—Detailed Characterization and Testing in Heavy Metals and Methylene Blue Removal

    Sanja Krstić, Milan Kragović, Maja Pagnacco, Vladimir Dodevski, Branka Kaluđerović, Miloš Momčilović, Ivica Ristović, Marija Stojmenović (2018)
    glukoza, fruktoza, аktivni ugalj, hidrotermalni tretman, aktivacija hidroksida, teški metali, metilen plavo
    ... major drawback of the conventional activated carbon-based adsorption process is the usage of non-renewable and relatively expensive raw materials (i.e., wood and coal), and therefore, it is still considered to be a high cost process with restricted applicability. To overcome such drawbacks and attain ...
    ... 240 min). The specific surface area (SBET) of obtained samples was calculated by the law of BET (Brunauer, Emmet, Teller) theory [41] from the best linear fit in the region p/po < 0.01 (p and po represent the equilibrium and saturation pressures of nitrogen at a fixed temperature). Using BJH (Barrett ...
    ... activated glucose and fructose samples (measured at 664 nm) were then fitted to different kinetic model: pseudo I, pseudo II and Elovich model, which linear forms are given in Equations (1)–(3) [65], respectively: ln qt qe = k1t (1) t qt = 1 k2·q2 e + 1 qe t (2) qt = b· ln(ab) + b·lnt (3) where ...

  • Model inteligentnog sistema adaptivnog upravljanja procesom prerade rude

    Ivana M. Jovanović (2016-01-13)
    U oblasti procesa prerade rude, flotacijska koncentracija predstavlja jednu od najznačajnijih i najčešće primenjivanih metoda separacije korisnih od nekorisnih minerala. Samim tim, veoma je važno osigurati uspešan rad flotacijskog postrojenja kroz dostizanje zadovoljavajućih tehno-ekonomskih pokazatelja. Cilj upravljanja procesom flotacijske koncentracije je upravo optimizacija kvaliteta i iskorišćenja korisne komponente u koncentratu uz maksimizaciju profita. Shodno tome, istraživanja na polju modelovanja i upravljanja ovim procesom zauzimaju značajno mesto u praksi kontolnog inženjenringa.Teorijska istraživanja u okviru doktorske disertacije obuhvatila su analizu položaja ...
    flotacijska koncentracija, modelovanje, upravljanje, inteligentni sistem, soft kompjuting, fazi logika, veštačke neuronske mreže
    ... Handbook (Edited by O. Maimon and L. Rokach), Springer, pp.165–192 240. Rughooputh, H.C.S., Rughooputh, S.D.D.V., 2002. Neural network process vision systems for flotation process. Kybernetes 31 (3/4), pp. 529–535 241. Runge, K.C., Franzidis J.P., Manlapig, E.V., 2003a. A study of the flotation chara ...
    ... Gas Dispersion Characteristics and Application ofNeural Network. International Journal of Advanced Scientific and Technical Research 4 (2), pp. 619–640 23. Bloom, F., Heindel, T.J., 1997. Mathematical Modelling of the Flotation Deinking Process. Mathematical and Computer Modelling, Vol. 25, No. 5, ...
    ... based on Artificial Neural Network. Industrial Minerals and Processing 2, pp. 1–3 165. Liu, J., Gui, W., Tang, Z., Yang, C., Zhu, J., Li, J., 2013. Recognition of the operational statuses of reagent addition using dynamic bubble size distribution in copper flotation process. Minerals Engineering 45 ...

  • 3D modeling and monitoring of karst system as a base for its evaluation and utilization: a case study from eastern Serbia

    Saša Milanović, Zoran Stevanović, Ljiljana Vasić, Vesna Ristić-Vakanjac (2013)
    Earth-Surface Processes, Geology, Pollution, Soil Science, Water Science and Technology, Environmental Chemistry, Global and Planetary Change

  • Transboundary groundwater resources of Serbia - present status and future needs for sustainable management

    Veljko Marinović, Branislav Petrović, Zoran Stevanović (2021)
    Republic of Serbia is located at the crossroads of Southeast and Central Europe and belongs to the Central Balkans. With its 88,360 km2, Serbia is one of the larger countries of the Balkan Peninsula. It borders 8 countries and has at least one transboundary aquifer (TBA) with each of them. According to evaluation conducted for UNECE in 2008, Serbia has a total of 17 TBAs, out of which 15 are shared with one neighboring country, while two aquifers are shared with two or three ...
    međugranične izdani, Srbija, monitoring podzemnih voda, upravljanje podzemnim vodama

  • Determining the Groundwater Balance and Radius of Influence Using Hydrodynamic Modeling: the Case Study of the Groundwater Source “Šumice” (Kikinda, Serbia)

    Dušan Polomčić, Dragoljub Bajić, Jelena Zarić (2015)
    A groundwater flow model was developed to simulate groundwater extraction from the public water supply source of the City of Kikinda. The hydrodynamic model includes the municipal groundwater source of Kikinda (Šumice and the Jezero Well), but also an extended area where there are groundwater sources that provide water supply to three factories: (MSK, TM and LŽT - Kikinda). Hydrodynamic modeling, based on the numerical method of finite differences will show the groundwater balance of the sources in the ...
    Water supply, Aquifer, Flow, Groundwater regime, Numerical modeling, Particle tracking
    ... paper that does not address new and innovative aspects of the topics of the meeting may be rejected by editors before entering the review process. In order to process the reviewing in time, please submit your manuscript via web interface in camera-ready form and in Microsoft Word format. CONCLUSION ...
    ... at Šumice came from the south (35.23%). Assuming Darcian unsteady-state three-dimensional flow and based on the major hypotheses of this method (linear form of the sink term in the mass transfer equation and negligible order of magnitude of dispersion effects), the particle tracking method for ...
    ... contours – general head boundary Figure 6. Discretization of the groundwater source at Šumice along the west-east section (Legend: blue network – aquifer) Hydraulic parameters The seepage characteristics of the model layers were specified by the values of hydraulic conductivity, storage ...

  • 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

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

    John Nyame (2024)
    The importance of mitigating the effects of global climate change has necessitated an in-depth exploration of innovative strategies to reduce carbon dioxide (CO2) emissions. Among these strategies, Carbon Capture, Utilization, and Storage (CCUS) has emerged as a promising and transformative solution. This master thesis delves into the diverse realm of CCUS processes, aiming to unravel the positives challenges, and opportunities within this dynamic field. The analysis begins with a systematic examination of carbon capture technologies, encompassing post-combustion, pre-combustion, and oxy-fuel combustion ...
    Carbon Capture, Utilization and Storage
    ... transport and storage network in the North Sea Canal area. The hub will contain onshore CO-» transport pipelines, offshore storage facilities, and eXxit- and feed-in points for companies directly connected to the network, or those connected via other forms of CO- transport. The network is expected to ...
    ... gas fields in the Norwegian sector of the North Sea [97]. The process selected for capturing the CO> was the use of the absorption process. This is a well-established process for this purpose, but it was the first time for the process to be packed together on an offshore platform. It consists of ...
    ... Capture and Storage Process [7] Capture . _ Transport Utilization/Storage CCUS Facility . CO, Sources Oil/gas Prođuction imcreaxe Figure 1.3 A full scale ofa Carbon Capture, Utilization and Storage process 2. CARBON CAPTURE ANALYSIS Carbon capture is the process of trapping carbon dioxide ...

  • Using Metadata For Content Indexing Within An OER Network

    Ranka Stanković, Olivera Kitanović, Ivan Obradović, Roberto Linzalone, Giovanni Schiuma, Daniela Carlucci (2014)
    ... academic or entrepreneurial equally, which might join the BAEKTEL network in the future, can be easily integrated in the current network. In addition, the framework can integrate OER that are not created by institutions within the network, the only condition being that those resources are registered ...
    ... academic or entrepreneurial equally, which might join the BAEKTEL network in the future, can be easily integrated in the current network. In addition, the framework can integrate OER that are not created by institutions within the network, the only condition being that those resources are registered and ...
    ... Indexing Within An OER Network Ranka Stanković, Olivera Kitanović, Ivan Obradović, Roberto Linzalone, Giovanni Schiuma, Daniela Carlucci Дигитални репозиторијум Рударско-геолошког факултета Универзитета у Београду [ДР РГФ] Using Metadata For Content Indexing Within An OER Network | Ranka Stanković, ...