Претрага

Упит dcterms_subject_txt:Probability and Uncertainty,Statistics and Probability,Statistical and Nonlinear Physics

2342 items

  • Hydrogeochemical distribution of Ca and Mg in groundwater in Serbia

    Petar Papić, Jovana Milosavljević, Marina Ćuk, Rastko Petrović (2014)

  • Defect Detection in Aluminium Using Pulse Thermography for a Simple width Periode Structure

    Tomić Ljubiša, Elazar Jovan, Damnjanović Vesna, Milanović Bojan (2012)

  • Hydrogeochemistry of Uranium in the Groundwaters of Serbia

    Marina Ćuk, Maja Todorović, Petar Papić, Jovan Kovačević, Zoran Nikić (2015)

  • Analysis of a simplified model for determining rock mass oscillation velocity at the Kovilovača open pit

    Suzana Lutovac, Miloš Gligorić, Jelena Majstorović, Luka Crnogorac (2023)
    ... table 4, a statistical analysis has been done and following values have been obtained. The curved line dependency index QO between the reduced distance R and rock mass oscillation velocity Y : 202 • muodell: ,= 0.9843 for total of 12 data (there is a strong correlation between R and y , given ...
    ... quantity of explosive, distance from the blasting site to the monitoring place, characteristics of the working environment and conditions of blasting. 5. DEFINING STATISTICAL CRITERIA For the above-mentioned models 1 — 5, on the basis of experimental data, we can get equations that can give us ...
    ... Petrosani, Romania, 2022; pp. 291-308. Simeunović, D. Matfhematics, Faculty of Mining and Geology, Mining department, Belgrade, Serbia, 1985; pp. 101-103. Žižić, M.; Lovrić, M.; Pavličić, D. Mezhods of Statistical Analysis, Faculty of Economics in Belgrade: Belgrade, Serbia, 1996; pp. 141—150. ...

  • 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

  • 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
    ... ies of calculating the probability of flotation. In: Coagulation and Flocculation: Theory and Applications (Edited by B. Dobiáš) pp. 321-353 252. Schulze, H.J., Stöckelhuber W., 2005. Flotation as a Heterocoagulation Process: Possibilities of Calculating the Probability of the Microprocesses, Rupture ...
    ... unlike the conventional mathematical methods, exhibit a certain tolerance to imprecision and uncertainty of technological parameters in the description of real systems. Therefore, they offer more flexible and more robust solutions to the problems of modelling of stochastic processes such as froth ...
    ... pp. 323–325 139. Kelsall, D.F., 1961. Application of probability in the assessment of flotation systems. Transactions of the Institution of Mining and Metallurgy, Vol. 70, pp. 191–204 140. King, R.P., 2001. Modeling and Simulation of Mineral Processing Systems. Publisher: Butterworth-Heinemann ...

  • The state and perspective of the natural gas sector in Serbia

    Dejan Ivezić, Marija Živković, Dušan Danilović, Aleksandar Madžarević, Miloš Tanasijević (2016)
    The strategy of long-term energy development of Serbia identifies an increase of share of natural gas in final energy consumption as one of the main aims. Serbia has signed a strategic agreement with the Russian Federation on cooperation in the oil and gas sector, within which the project South Stream pipeline is planned to be realized. In addition, the Republic of Serbia has signed the Treaty that establishes the Energy Community and accepted the obligation to implement the Energy ...
    Consumption, natural gas, scenarios of development

  • Ionic conductivity in single-crystal LiAISi2O6: influece of structure on lithium Mobility

    Welsch Ana-Maria, Murawski Dawid, Prekajski Marija, Vulić Predrag, Kremenović Aleksandar (2015)

  • Lorandite from Allchar as geochemical detector for pp-solar neutrinos

    Pavicevic Miodrag K., Amthauer Georg, Cvetkovic Vladica D., Boev Blazo, Pejovic Vladan, Henning Walter F., Bosch Fritz, Litvinov Yuri A., Wagner Reinhard (2018)

  • Development of the hybrid MCDM model for evaluating and selecting bucket wheel excavators for the modernization process

    Snezana Savkovic, Predrag Jovancic, Stevan Djenadic, Milos Tanasijevic, Filip Miletic (2022)
    This paper presents a methodology for evaluating and ranking different bucket wheel excavators (BWE) for determining which machine should enter in the process of revitalization and modernization. Various multicriteria methods are used. Combining them achieves the best effect when choosing BVE for the modernization process. AHP, TOPSIS, VIKOR, and PROMETHEE methods are used. The hybrid models are developed from the multi-criteria decision making (MCDM) methods and they are used to evaluate the basic indicators that characterize the operation of ...
    višekriterijumsko odlučivanje, rotorni bageri, modernizacija, ekspertska analiza

  • Модел померања терена услед утицаја рударских радова на основу радарских сателитских снимака

    Зоран Гојковић (2023)
    Површински коп, као систем који обезбеђује енергетску стабилност или снабдевање сировинама које су од изузетне важности за привредни напредак, својим функционисањем утиче на околна насељена места. Међу бројним аспектима овог утицаја, може се издвојити издвојити и анализирати утицај вертикалних и хоризонталних померања која се јављају на површи терена. Мониторинг вертикалних и хоризонталних померања површи терена околних насељених места треба да има што бољу временску резолуцију (временски период између праћења деформација) како би се вертикална и хоризонтална померања контролисала и ...
    Сентинел 1 интерферометрија, слегање, Перманентни скатерери, Костолац

  • Hydraulic impact of pressure transients from water conveyance tunnel on the complex hydrogeological system: A case study HPP

    Igor Jemcov, Maja Todorović, Aleksandar Jemcov, Marina Ćuk Đurović (2024)
    Tunel pod pritiskom, Unutrašnji pijezometri, Tranzijenti pritiska, Karstna izdan, Pukotinska izdan, Hidraulički odziv
    ... Compositional multivariate statistical analysis of hydrogeochemical processes in a fractured massif: la Linea Tunnel project Colombia. Appl Geochem (2018) C.B. Zhou et ol. Groundwater flow through fractured rocks and seepage control in geotechnical engineering: rheories and practices JRMGE (2023) ...
    ... Compositional multivariate statistical analysis of hydrogeochemical processes in a fractured massif: la Linea Tunnel project Colombia. Appl Geochem (2018) C.B. Zhou et ol. Groundwater flow through fractured rocks and seepage control in geotechnical engineering: theories and practices JRMGE [2023} ...
    ... involved monitoring of water pressure in the surrounding rock masses and observing the impact of hydraulic transients generated by HPP operation. A comprehensive analysis of monitoring data, incorporating ordinal and partial correlations and considering geological features, provides a profound understanding ...

  • Composition related properties of (Yb,Y)2O3 nanoparticles synthesized by controlled thermal degradation of AA complexes

    Antić Bratislav, Kremenović Aleksandar, Vučinić-Vasić Milica, Dohčević-Mitrović Zorana, Nikolić Aleksandar S., Gruden-Pavlović Maja, Jancar Bostjan, Meden Anton (2010)

  • The Fuzzy–AHP Synthesis Model for Energy Security Assessment of the Serbian Natural Gas Sector

    Aleksandar R. Madžarević, Dejan D. Ivezić, Miloš L. Tanasijević, Marija A. Živković (2020)
    Natural gas is used for the production of almost 20% of total energy today. The natural gas security of the Republic of Serbia is an urgent strategic, political and security issue. Serbia is one of the most vulnerable countries in Southeast Europe, because it only has one supply route. This study is a contribution to efforts to better understand the factors affecting energy security through the implementation of a new methodology based on the fuzzy–AHP synthesis model for measuring ...
    energetska bezbednost, prirodni gas, fazi AHP, AHP višekriterijumska analiza, fazi teorija
    ... deal with uncertainty in the energy field decision process [39–41]. The key reason is finding an appropriate language to manage imprecise criteria and the possibility of integrating the analysis of qualitative and quantitative factors. Symmetry 2020, 12, 908 3 of 42 1.2. Energy Security and Fuzzy Theory ...
    ... longer exact, and they have fuzzy uncertainty. This is the weakness of the fuzzy–AHP based model. The limits of application of this model lie in situations where clear and continuous data are available. In those characteristic cases, given methods seem to have too much mathematical techniques and too little ...
    ... provides discussions; and finally Section 7 draws conclusions. 2. The Fuzzy–AHP Synthesis Model for Energy Development Scenarios During the procedure, data collection is performed, which can be statistical (based on calculation, software model result, projections, statistical processing, etc.) or based ...

  • Optimizacija i planiranje površinskih kopova stohastičkim modelima

    Dejan R. Stevanović (2015-05-29)
    Savremeno rudarstvo izloženo je stalnom trendu pogoršanja uslova poslovanja.Mogućnost ostvarenja ekonomskih i drugih ciljeva rudarskog projektakompromitovana je stalnim pogoršanjem kvaliteta ležišta na kojima se vršieksploatacija, kao i značajnoj dozi neizvesnosti povezane sa geološkim,ekonomskim i tehničkim parametrima proizvodnje. U ovako kompleksnimuslovima poslovanja, matematički modeli sposobni da odgovore značajnimizazovima, odnosno ponude optimalna rešenja kojima se garantuje maksimalnoispunjenje projektovanih ciljeva, nameću se kao neophodnost.Trenutni, konvencionalni pristup optimizaciji i planiranju površinskih kopovazasniva se na algoritmima, razvijenim sredinom prošlog veka čije je opšteobeležje deterministički ...
    površinski kop, planiranje, optimizacija, stohastički modeli, kontrola kvaliteta uglja, neizvesnost.
    ... Method, Journal of the American Statistical Association (American Statistical Association), Vol. 44 (247): str. 335–341 239 Morley C., Snowden V., and Day D., 1999, Financial impact of resource/reserve uncertainty, The Journal of The Southern African Institute of Mining and Metallurgy, str. 293-302 ...
    ... Computers and Operations Research, str. 539– 562. Jon Von Neumann, S. Ulam, 1947, Statistical Methods in Neutron Diffusion Journel A, 1989, Fundamentals of geostatistics in five lessons. Short course in geology, vol. 8., American Geophysical Union. Journel A, 1996, Modeling uncertainty and spatial ...
    ... Science and Technology, vol. 10, str. 323–335. Denby, B. and Schofield, D., 1994, Open pit design and scheduling by use of genetic algorithms. Transactions of the Institute of Mining and Metallurgy, Section A), Vol. 103, str.21-26. Dimitrakopoulos R., 2011, Strategic mine planning under uncertainty, stochastic ...

  • Утицај обртног магнетног поља на дерацемизацију кристала натријум-хлората

    М. Милојевић, А. Жекић, П. Дабић, Б. Вучетић, Б. Максимовић (2023)
    ... of Belgrade, Faculty of Physics, Studentski trg 12, 11000 Belgrade; ? University of Belgrade, Faculty of Mining and Geology, Đušina 7, 11000 Belgrade e-mail: andrijana(q)ff.bg.ac.rs Viedma ripening [1], application of ultrasonic waves [2], addition of impurities [3] and temperature changes [4] ...
    ... rotational frequency of the field affects the fraction of the obtained crystals. At frequencies of 800, and 1200 rpm, the amount of both enantiomers is approximately the same; at frequencies of 200, 400, and 1000 rpm, |. – orientation of crystals is dominant, while at 600 rpm, D – orientation of crystals ...
    ... слободном приступу. - Претрага репозиторијума доступна је на www.dr.rgf.bg.ac.rs The Digital repository of The University of Belgrade Faculty of Mining and Geology archives faculty publications available in open access, as well as the employees' publications. - The Repository is available at: www.dr.rgf ...

  • Utilizing sewage wastewater heat in district heating systems in Serbia: effects on sustainability

    Marija Živković, Dejan Ivezić (2021)
    Transformation of the heating sector is recognized as being essential for ensuring reliable and afordable energy services provided with reduced consumption of energy sources and diminished impact on the environment and less import dependency. The possibility of utilizing energy sources that otherwise would be wasted needs to be considered and treated as a big advantage of district heating systems. Despite many advantages, sewage wastewater heat is still a mostly unused resource at the global level and a totally unused ...
    рекуперација топлоте из отпадних вода, систем даљинског грејања, топлотне пумпе, енергетске уштеде, емисија угљендиоксида, енергетска безбедност, Србија
    ... efficiencies—Part 4–5. District heating and cooling Statistical Office of the Republic of Serbia (2013) Installations and aux- iliary premises in dwellings. http:// publi kacije. stat. gov. rs/ G2013/ Pdf/ G2013 4008. pdf. Accessed 2 Aug 2019 Statistical Office of the Republic of Serbia (2017) Total ...
    ... accounts for 45.45% of final energy consump- tion in Serbia (Statistical Office of the Republic of Serbia 2017). The highest share of energy consumed in the build- ings sector, more than 60%, is related to space heating (Econoler 2012; Stoiljković and Todorović 2015). District heating systems exist in 57 ...
    ... 2018). Approximately 20% of the total number of households in Serbia and 43.8% of households in cities are supplied with heat from district heating systems (Association of Serbian district heating companies 2018; Statistical Office of the Republic of Serbia 2013). In some urban areas (Bor, Novi ...

  • Overcoming the Low Oral Bioavailability of Deuterated Pyrazoloquinolinone Ligand DK-I-60-3 by Nanonization: A Knowledge-Based Approach

    Jelena R. Mitrović , Branka Divović-Matović, Daniel E. Knutson, Jelena B. Ðoković, Aleksandar Kremenović, Vladimir D. Dobričić, Danijela V. Randjelović, Ivana Pantelić, James M. Cook, Miroslav M. Savić, Snežana D. Savić (2021)
    Poor water solubility of new chemical entities is considered as one of the main obstacles in drug development, as it usually leads to low bioavailability after administration. To overcome these problems, the selection of the appropriate formulation technology needs to be based on the physicochemical properties of the drug and introduced in the early stages of drug research. One example of the new potential drug substance with poor solubility is DK-I-60-3, deuterated pyrazoloquinolinone, designed for the treatment of various neuropsychiatric ...
    pyrazoloquinolinones, nanocrystals, wet media milling, fasted/fed bioavailability
    ... results or ANOVA with Turkey HSD as a post hoc test for three results groups. Statistical analysis was performed using IBM SPSS Statistics software (v. 25). p < 0.05 was considered as statistically significant. 3. Results and Discussion 3.1. Preformulation Studies Substance DK-I-60-3 appeared as a yellow ...
    ... respec- tively). 2.2.6. Statistical Analysis All measurements were performed in triplicate, and results were expressed as mean value ± SD, except in in vivo study where SEM was used instead of SD. After checking the normality of distribution, the statistical analysis involved Student’s t-test for two sets ...
    ... K., V.D.D., D.V.R., and I.P.; investigation, J.R.M., D.E.K., J.B.Ð., A.K., V.D.D., D.V.R., and I.P.; writing—original draft preparation, J.R.M.; writing—review and editing, A.K., J.M.C., M.M.S., and S.D.S.; funding acquisition, J.M.C., M.M.S., and S.D.S. All authors have read and agreed to the published ...

  • Curcumin nanonization using an alternative small-scale production unit: selection of proper stabilizer applying basic physicochemical consideration and biological activity assessment of nanocrystals

    Ines Nikolić, Jelena Antić-Stanković, Dragana Božić, Danijela Ranđelović, Bojan Marković, Dominique Jasmin Lunter, Aleksandar Kremenović, Miroslav Savić, Snežana Savić (2020)
    As the number of poorly soluble drugs is increasing, nanocrystals have become very interesting due to wide range of application possibilities. Curcumin was used as a model active ingredient in this work. Even though it has many proven positive effects, due to its physicochemical issues, its possibilities have not been fully exploited. The goal of this work was to select optimal conditions for a top-down method for curcumin nanosuspension production, and to perform their comprehensive characterization applying complementary methodologies: ...
    nanocrystal, curcumin, top-down method, wetball milling

  • Paleomagnetic evidence for post-collisional Miocene clockwise rotation in the Serbian segment of the Vardar Zone and the Danubicum

    Vesna Lesić, Emő Márton, Vesna Cvetkov, Dragana Tomić (2015)