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Упит dcterms_subject_txt:development of lexical resources

2836 items

  • Fuzzy optimization in hydrodynamic analysis of groundwater control systems: Case study of the pumping station “Bezdan 1”, Serbia

    Dragoljub Bajić, Dušan Polomčić (2014)
    A groundwater control system was designed to lower the water table and allow the pumping sta-tion “Bezdan 1” to be built. Based on a hydrodynamic analysis that suggested three alternative solutions, mul-ticriteria optimization was applied to select the best alternative. The fuzzy analytic hierarchy process methodwas used, based on triangular fuzzy numbers. An assessment of the various factors that influenced the selec-tion of the best alternative, as well as fuzzy optimization calculations, yielded the “weights” of the alternativesand the ...
    groundwater lowering, groundwater management scenario, fuzzy analytic hierarchy process,expert knowledge, triangular fuzzy numbers, linguistic variables
    ... (2004) An approach to elaborate priority preor- ders of water resources projects based on multicriteria Fuzzy optimization in hydrodynamic analysis of groundwater control systems: Case study of the pumping station 109 Table 2. Ultimate evaluation of alternatives. evaluation and fuzzy sets analysis ...
    ... study can be recommended for other fields of science and technology, where opti- mization is required and the best-possible decision needed. Acknowledgement Our gratitude goes to the Ministry of Education, Science and Technological Development of the Republic of Serbia for financing projects OI-176022 ...
    ... decembar 2014 BELGRADE, December 2014 1 University of Belgrade, Faculty of Mining and Geology, Department of Hydrogeology, Djusina 7, 11000 Belgrade, Serbia, e-mail: osljane@orion.rs 2 University of Belgrade, Faculty of Mining and Geology, Department of Hydrogeology, Djusina 7, 11000 Belgrade, Serbia, ...

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

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

  • Optimizacija vodosnabdevanja podzemnim vodama u Srbiji

    Dušan Polomčić, Zoran Stevanović, Petar Dokmanović, Vesna Ristić-Vakanjac, Bojan Hajdin, Saša Milanović, Dragoljub Bajić (2012)
    ... , POLOMCIC D., KOVACS B., TOROK J., MILANOVIC S., HAJDIN B. AND PAPIC P., 2011 Towards sustainable management of transboundary Hungarian — Serbian aquifer. In: Transboundary Water Resources Management: A Multidisciplinary Approach, 1 Ed. (eds. Ganoulis J., Aureli A. and Fried J.). Wiley-VCH Verlag. pp ...
    ... artificial replenishment. The amount of water gained through the application of artificial infiltration together with the estimated renewable groundwater reserves amounts to a total of 107 m 3 /s of quality groundwater. The summary of the status of the quality and protection of groundwater within specific ...
    ... artificial replenishment. The amount of water gained through the application of artificial infiltration together with the estimated renewable groundwater reserves amounts to a total of 107 m/s of quality groundwater. The summary of the status of the quality and protection of groundwater within specific aquifer ...

  • Fuzzy Model for Risk Assessment of Machinery Failures

    Dejan V. Petrović, Miloš Tanasijević, Saša Stojadinović, Jelena Ivaz, Pavle Stojković (2020)
    The main goal of this research was the development of an algorithm for the implementation of negative risk parameters in a synthesis model for a risk level assessment for a specific machine used in the mining industry. Fuzzy sets and fuzzy logic theory, in combination with statistical methods, were applied to analyze the time picture state of the observed machine. Fuzzy logic is presented through fuzzy proposition and a fuzzy composition module. Using these tools, the symmetric position of the ...
    fazi teorija, rizik, otkaz rudarskih mašina
    ... system is based on the state of the machinery at the time it is observed (in this study, we did this in the context of the exploitation of mineral resources and mineral processing). The condition of the machines is examined through an analysis of existing data on the operation of the machine, including ...
    ... for the creation of a favorable atmosphere for improving the functionality of the entire process of exploiting mineral resources. One of the most important details is that the results of fuzzy logic reasoning can indicate trends in risk management and can unambiguously reveal future developments related ...
    ... financial resources that could reduce the number of failures or mitigate the negative effects of a failure. Such investment may be useful: the maintenance system can be modified, achieving considerable savings. In spite the fact that proposed model minimizes the influence of subjectivity of the analyst ...

  • Review: Methodological approaches and research techniques for addressing construction and remediation problems in karst reservoirs

    Saša Milanović, Ljiljana Vasić (2021)
    Earth and Planetary Sciences (miscellaneous), Water Science and Technology

  • Study of the Synergetic Effect of Co-Pyrolysis of Lignite and High-Density Polyethylene Aiming to Improve Utilization of Low-Rank Coal

    Ivan Kojić, Achim Bechtel, Nikoleta Aleksić, Dragana Životić, Snežana Trifunović, Gordana Gajica, Ksenija Stojanović (2021)
    Polimeri i plastika, opšta hemija
    ... declare no conflict of interest. The funders had no role in the design of the study; in the collection, analyses, or interpretation of data; in the writing of the manuscript; or in the decision to publish the results. References 1. Strategy Energy Development of the Republic of Serbia until 2015. Available ...
    ... Biswas, P. Evaluation of Mass and Surface Area Concentration of Particle Emissions and Development of Emissions Indices for Cookstoves in Rural India. Environ. Sci. Technol. 2011, 45, 2428–2434. [CrossRef] 15. Das, D.; Dutta, S.; Bhandarkar, U.; Sethi, V. Assessment of carbonization of coal as a potential ...
    ... isotope analysis of individual hydrocarbons (δ13C), Rock-Eval pyrolysis, and elemental analysis. Detailed analysis of pyrolysis products and understanding the interactions between lignite OM and HDPE may contribute to the development of cost-effective and environmentally friendly processing of low-rank coal ...

  • Mine surveying works for the purpose of excavating the remaining reserves of bauxite in the deposit of “Podbracan”

    Aleksandar Milutinović, Aleksandar Ganić, Thamer Rayes Diyab, Rade Tokalić, Meri Ganić (2015)
    ... during the pre-project and project stage of mining, as well as during the construction of mining facilities and excavation of mineral resources. Speci�c features of the project concerning excavation of the remaining reserves of bauxite in the deposit of "Podbracan", and in this way the forthcoming mining ...
    ... This paper was realized as a part of the projects TR33029 and TR33044 �nanced by the Ministry of Education, Science and Technological Development of the Republic of Serbia within the framework of Programme of research in the �eld of technological development for the period 2011-2014. 10. References ...
    ... al. REM: R. Esc. Minas, Ouro Preto, 68(3), 323-330, jul. sep. | 2015 4. Selection of opening and development solutions The opening, development and excavation concept is conditioned by the natural conditions of the deposit and by its technical and technological conditions. Figure 2 shows the ...

  • 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
    ... training dataset Imbalanced With hyperparameter tuning WithTuning No hyperparameter tuning NoTuning Table 2. Resources and tags used for each experimentation 6.6.2 Results of Models Trained on Small Datasets Experiments were conducted with 24 models trained on datasets with 30, 90, and 180 ...
    ... learning algorithms are sufficient for achieving good results even without additional descriptors. This means time and resources can be saved by using only the basic set of features. 67 7.4. Iimplementation procedure To ensure successful implementation, several steps need to be followed: ...
    ... 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 University of Belgrade Faculty of Mining and Geology Master ...

  • 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
    ... can address most of the limitations of the absorption processes, the current technologies developed are not cost effective at their current stages of development. [33]Furthermore, no large-scale operation has been fully deployed yet. The design, development, and evaluation of high-performance ...
    ... narrative of how feasible countries and energy players need to invest in climate change and energy sustainability as global warming is on the rise and adapt to the new world of technological innovation and cost saving of energy resources. REFERENCES [1] Stefan Bachu (2000) Sequestration of CO2 in ...
    ... According to the report of the Global Carbon Capture and Storage Institute, the capture capacity of operating large-scale CCS facilities has increased from 31.2 Mt/year in 2017 to 39.2 Mt/year in 2019. At the same time, the total capacity of all facilities, at all stages of development, has increased ...

  • 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
    ... able to perform the required function, under given conditions and at a given moment, or during a given interval of time, and assuming the necessary supply is provided (external resources). Availability may also be expressed as the probability that the system will be available at any calendar time ...
    ... Liebherr in terms of R, with grades "good" in extent of 40% and “average” in extent of 60%; M as "average" in extent of 100% and S as "adequate" in extent of 100%; machine Dressta as "average" in all terms and Caterpillar as "good" in terms of R and S and "excellent" in term of M. This can be written ...
    ... 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 ...

  • Development of the Availability Concept by Using Fuzzy Theory with AHP Correction, a Case Study: Bulldozers in the Open-Pit Lignite Mine

    Stevan Đenadić, Dragan Ignjatović, Miloš Tanasijević, Uglješa Bugarić, Ivan Janković, Tomislav Šubaranović (2019)
    Availability is one of the most used terms in maintainability engineering. This concept is used to denote: The quality of service of an engineering system, i.e., machines, weak points’ analysis, asset management, as well as making decisions in the process of life cycle management. Availability is an overall indicator and contains partial indicators that are oriented towards reliability, maintenance, and logistical support. Availability presents a variable value and changes in time and space. Usually, availability is shown as the ...
    raspoloživost, fazi teorija, AHP višekriterijumska analiza, eksperska ocena, buldozer
    ... Republic of Serbia within the framework of Programme of research in the field of technological development projects TR 33039, TR 35040 and TR 33025. Acknowledgments: This paper was realized as a part of the projects: “Improvement of Lignite Open cast Technology in Order to Increase Energy Efficiency and ...
    ... Programme of research in the field of technological development for the period 2011–2019. Conflicts of Interest: The authors declare no conflict of interest. Energies 2019, 12, 4044 17 of 18 References 1. Papic, L.; Milovanovic, Z.N. Systems Maintainability and Reliability; The Research Center of Dependability ...
    ... 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 energies Article Development of the Availability Concept by ...

  • Photocatalytic Activity of the V2O5 Catalyst toward Selected Pharmaceuticals and Their Mixture: Influence of the Molecular Structure on the Efficiency of the Process

    Sanja J. Armaković, Aleksandra Jovanoski Kostić, Andrijana Bilić, Maria M. Savanović, Nataša Tomić, Aleksandar Kremenović, Maja Šćepanović, Mirjana Grujić-Brojčin, Jovana Ćirković, Stevan Armaković (2023)
    Due to the inability of conventional wastewater treatment procedures to remove organic pharmaceutical pollutants, active pharmaceutical components remain in wastewater and even reach tap water. In terms of pharmaceutical pollutants, the scientific community focuses on -blockers due to their extensive (over)usage and moderately high solubility. In this study, the photocatalytic activity of V2O5 was investigated through the degradation of nadolol (NAD), pindolol (PIN), metoprolol (MET), and their mixture under ultraviolet (UV) irradiation in water. For the preparation of V2O5, facile ...
    DFT analysis, metoprolol, nadolol, nanomaterial characterization, photocatalysis, pindolol, β-blocker
    ... the International Development of Academic and Scientific Collaboration (www.aidasco.org;) for providing the computational resources necessary for the first principles calculations. Conflicts of Interest: The authors declare no conflict of interest. Sample Availability: Samples of the compounds are ...
    ... Becke, A. Density-functional thermochemistry. III. The role of exact exchange. J. Chem. Phys. 1993, 98, 5648–5652. [CrossRef] Lee, C.; Yang, W.; Parr, R. Development of the Colle-Salvetti correlation-energy formula into a functional of the electron density. Phys. Rev. B 1988, 37, 785. [CrossRef] ...
    ... version of the manuscript. Funding; This research was funded by the Ministry of Education, Science and Technological Devel- opment of the Republic of Serbia (grant no. 451-03-68/2022-14/200125 and grant no. 451-03-68/2022- 14/200126), Innovation Fund of the Republic of Serbia—Proof of Concept ...

  • 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

  • Multihazard Exposure Assessment on the Valjevo City Road Network

    Miloš Marjanović, Biljana Abolmasov, Svetozar Milenković, Uroš Đurić, Jelka Krušić, Mileva Samardžić Petrović (2019)
    Prirodni hazardi, izloženost, klizišta, poplave, bujice, GIS, R

  • Environmental Energy Security Indicators as Tools for Environmental Protection

    Aleksandar Madžarević, Dejan Ivezić, Marija Živković , Miloš Tansijević (2019)
    Еколошка прихватљивост је постала незаменљив синтезни показатељ сваке валидне енергетске анализе у последње две-три деценије. Енергетска безбедност је у директној хармонији с еколошком прихватљивошћу кроз многе прописане политичке циљеве, економске користи, правне тековине итд. Индикатори еколошке сигурности представљају један од основних елемената за одређивање енергетске безбедности и снажне алате за усмеравање енергетског сектора ка одрживом развоју. У овом раду, анализа је била концентрисана на показатеље енергетске безбедности у области животне средине који се односе на сектор природног гаса у ...
    енергетска безбедност, еколошки енергетски индикатори, заштита животне средине, еколошка прихватљивост
    ... SCENARIO DEVELOPMENT AND RESULTS 4.1 Natural gas energy scenario development For the purpose of demonstrating the impact of energy security on environmental protection, through the Indicator of environmental acceptability, the scenario of development of the natural gas sector of the Republic of Serbia ...
    ... purpose of comparing different projections of natural gas consumption, six possible projections were analysed in model. Results of combined scenario of OPT scenario of infrastructure development with Referent consumption scenario is presented. Figure 2 and Table 7 shows the affiliation of Environmental ...
    ... 5258–5263 5. Ministry of Mining and Energy (2015): Strategy of Energy Development of Serbia up to 2025 with projections up to 2030, available online URL: http://www.mre.gov.rs/dokumenta-efikasnost- izvori.php (6.7.2016.) 6. Government of the Republic of Serbia, Ministry of Energy and Mining, AERS ...

  • 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

  • Mineral and Thermal Waters of Serbia: Multivariate Statistical Approach to Hydrochemical Characterization

    Maja Todorović, Jana Štrbački, Marina Ćuk, Jakov Andrijašević, Jovana Šišović, Petar Papić (2016)

  • Some examples of interactions between certain rare earth elements and soil

    Zlatko Nikolovski, Jelena Isailović, Dejan Jeremić, Sabina Kovač, Ilija Brčeski (2021)
    Freundlich adsorption isotherm, sequential extraction, metallic ions, ICP-OES
    ... their properties is their wide- spread use and as the consequence of the widespread use there is an increased quantity of waste that is disposed and often in the inappropriate manner and ends up in the nature, disrupting the resources such as water and soil. The contami- nation occurs due to insufficient ...
    ... 2Faculty of Chemistry, University of Belgrade, Studentski trg 12-16, 11000 Belgrade, Serbia; 3Innovation Center of Faculty of Chemistry, University of Belgrade, Belgrade, Serbia; 4Department of Mineralogy, Crystallography, Petrology and Geochemistry, Laboratory of Crystallography, Faculty of Mining ...
    ... 11000 Belgrade, Serbia; 3Innovation Center of Faculty of Chemistry, University of Belgrade, Belgrade, Serbia; 4Department of Mineralogy, Crystallography, Petrology and Geochemistry, Laboratory of Crystallography, Faculty of Mining and Geology, University of Belgrade, Đušina 7, 11000 Belgrade, Serbia ...

  • Definition of criteria and alternatives for choosing the optimal mining method deposits when applying multi: Criteria optimization, Belgrade, June 2024

    Sanja Bajić, Dragoljub Bajić, Branko Gluščević, Radmila Gaćina, Josip Išek (2024)
    multi-criteria decision-making, definition of criteria, underground exploitation

  • Arsenic in Tap Water of Serbia´s South Pannonian Basin and Arsenic Risk Assessment

    Petar Papić, Marina Ćuk, Maja Todorović, Jana Stojković, Bojan Hajdin, Nebojša Atanacković, Dušan Polomčić (2012)
    kvalitet podzemnih voda, arsen, analiza rizika, Panonski Basen
    ... Technology Development, more than 600,000 inhabitants of Banat and Bačka (or some 40% of the population of Vojvodina) obtain drinking water sup- ply with arsenic concentrations exceeding maximum allow- able concentrations in drinking water (10 µg/L) [19]. However, the actual number of the people in Vojvodina ...
    ... ry and arsenic behaviour in groundwater resources of the Pannonian Basin (Hungary and Romania). Appl. Geochem. 26, 1, 2010. 9. UJEVIĆ M., DUIĆ Ž., CASIOT C., SIPOS L., SANTO V., DADIĆ Ž., HALAMIĆ J. Occurrence and geochemistry of arsenic in the groundwater of Eastern Croatia. Appl. Geochem. 25, 1017 ...
    ... ANWAR J., Argument against natural origin of arsenic in groundwater. Abstract from Arsenic Poisoning in Bangladesh, [Online] 2011: http://www.sos-arsenic.net/ english/natural_origin/1.html#sec4 19. PROVINCIAL SECRETARIAT OF SCIENCE AND TECHNOLOGY DEVELOPMENT (PSSTD). Water Supply and Water Protection ...