Претрага
612 items
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Characterization of bituminite in Kimmeridge Clay by confocal laser scanning and atomic force microscopy
Paul C. Hackley, Jolanta Kus, João Graciano Mendonça Filho, Andrew D. Czaja, Angeles G. Borrego, Dragana Životić, Brett J. Valentine, Javin J. Hatcheries (2022)This work investigates bituminite (amorphous sedimentary organic matter) in Upper Jurassic Kimmeridge Clay source rock via confocal laser scanning microscopy (CLSM) and atomic force microscopy (AFM). These petrographic tools were used to provide better understanding of the nature of bituminite, which has been historically difficult to identify and differentiate from similar organic matter types in source rocks. As part of an International Committee for Coal and Organic Petrology (ICCP) working group, an immature (0.42% vitrinite reflectance), organic-rich (44.1 wt% ...Битуминит, Kонфокална ласерска скенирајућа микроскопија, Mикроскопија атомских сила, Органска петрологија, Термичка зрелостPaul C. Hackley, Jolanta Kus, João Graciano Mendonça Filho, Andrew D. Czaja, Angeles G. Borrego, Dragana Životić, Brett J. Valentine, Javin J. Hatcheries. "Characterization of bituminite in Kimmeridge Clay by confocal laser scanning and atomic force microscopy" in International Journal of Coal Geology, Elsevier BV (2022). https://doi.org/10.1016/j.coal.2022.103927
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Composition of organic matter and thermal maturity of Mesozoic and Cenozoic sedimentary rocks in East Herzegovina (External Dinarides, Bosnia and Herzegovina)
This paper presents the first data on the organic matter and thermal maturity of Mesozoic and Cenozoic sedimentary rocks in the East Herzegovina region of the External Dinarides. Representative, organic-rich samples from outcropping sedimentary rocks of different ages in the area (Triassic to Neogene) were selected and analysed. The organic matter was studied by Rock-Eval pyrolysis and under the microscope in reflected non-polarized light and incident blue light. The results obtained show the presence of different types of organic ...... P., Read, H., Reyes, J., De La Rosa Rodriguez, G., Viegas Alves Fernandes de Souza, I., Suarez- Ruiz, I., Sykorova, I. & Valentine, J. B., 2015. Standardization of re�ectance measurements in dispersed organic matter: Results of an exercise to improve interlaboratory agreement. Marine and Petroleum ...
... Fernandes de Souza, I., Suarez- Ruiz, L., Sykorova, I. & Valentine, J. B., 2015. Standardization of reflectance measurements in dispersed organic matter: Results of an exercise to improve interlaboratory agreement. Marine and Petroleum Geology, 59: 22-34. Hrvatovic, H., 2006. Geological Guidebook trough ...
... Bouzinos, A., Cardott, J. B., Cook, C. A., Eble, C., Flores, D., Gentzis, T., Goncalves, P. A., Filho Mendoca, G. J., Hamor-Vido, M., Jelonek, I., Kommeren, K., Knowles, W., Kus, J., Mastalerz, M., Menezes, R. T., Newman, J., Oikonomopoulos, K. I., Pawlewicz, M., Pickel, W., Potter, J., Ranasinghe, P ...Nikoleta Aleksić, Aleksandar Kostić, Miloš Radonjić. "Composition of organic matter and thermal maturity of Mesozoic and Cenozoic sedimentary rocks in East Herzegovina (External Dinarides, Bosnia and Herzegovina)" in Annales Societatis Geologorum Poloniae (2021). https://doi.org/10.14241/asgp.2021.16
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Spatial assessment of the areas sensitive to degradation in the rural area of the municipality Čukarica
Nature and Landscape Conservation, Soil Science, Agronomy and Crop Science, Water Science and TechnologyNatalija Momirović, Ratko Kadović, Veljko Perović, Miloš Marjanović, Aleksandar Baumgertel. "Spatial assessment of the areas sensitive to degradation in the rural area of the municipality Čukarica" in International Soil and Water Conservation Research, Elsevier BV (2019). https://doi.org/10.1016/j.iswcr.2018.12.004
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Badenske školjke jugoistočnog oboda Panonskkog basena (Centralni Paratetis)
Gordana M. Jovanović (2014-12-05)Rad obuhvata detaljnu studiju badenskih školjaka koje potiču sa terenajugoistočnog oboda Panonskog basena (Centralni Paratetis). Proučavani su lokaliteti naprostorima Srbije (Fruška gora, Golubac, okolina Beograda, Aranđelovca, Koceljeva,Loznica) i severoistočne Bosne (Ugljevik). Pored taksonomske analize i paleontološkihopisa bivalvija, u radu je dat i spisak revidovanih vrsta koje su do sada pronađene usedimentima badenskog kata istraživanog terena. Do sada je ukupno poznato 41familija, 108 rodova i 174 taksona. Identifikovano je 170 bivalvijskih vrsta, međukojima su neke prvi put konstatovane na ovim ...školjke, baden, Panonski basen (Centralni Paratetis), stratigrafija,paleoekologija, paleogeografija, paleobiogeografija... Revue de paleontologie 13, 1: 97-115. Brenchley, P. J., i Harper D. A. T. 1998. Palaeoecology. Ecosystem, environments and evolution. Champan i Hall, London, Weinhelm, New York, Tokyo, Melbourne, Madras. 402 pp. Brett, C. E., i Thomka, J., R (februar 2013). Fossils and Fossilisation. In: eLS ...
... The Hiroshima University, 29, 2: 291-419. Valentine, J. W., Jablonski, D., Kidwell, Sand Roy, K. 2006. Assessing the fidelity of the fossil record by using marine bivalves. Proccedings. Natl. Acad. Sci U S A. 25, 103, 17, 6599-6604. Vermeij, G. J. 1980. Drilling predation in a population of ...
... jugoistočnog oboda Panonskog basena (Centralni Paratetis) Doktorska disertacija 196 Belanger, CL, Jablonski D, Roy K, Berke SK, Krug AZ, Valentine J W. 2012. Global environmental predictors of benthic marine biogeographic structure. Proccedings Naturale Acadenmia Science USA 109, 35: 14046-14051 ...Gordana M. Jovanović. "Badenske školjke jugoistočnog oboda Panonskkog basena (Centralni Paratetis)" in Универзитет у Београду, Универзитет у Београду, Рударско-геолошки факултет (2014-12-05)
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The number of unimodular roots of some reciprocal polynomials
Dragan Stankov (2020)We introduce a sequence P2n of monic reciprocal polynomials with integer coefficients having the central coefficients fixed. We prove that the ratio between number of nonunimodular roots of P2n and its degree d has a limit when d tends to infinity. We present an algorithm for calculation the limit and a numerical method for its approximation. If P2n is the sum of a fixed number of monomials we determine the central coefficients such that the ratio has the minimal limit. ...Algebraic integer, the house of algebraic integer, maximal modulus, reciprocal polynomial, primitive polynomial, Schinzel-Zassenhaus conjecture, Mahler measure, method of least squares, cyclotomic polynomialsDragan Stankov. "The number of unimodular roots of some reciprocal polynomials" in Cmptes rendus mathematique (2020). https://doi.org/10.5802/crmath.28
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Analiza primene višekriterijumskih metoda u optimizaciji izbora hidruličnih bagera na površinskim kopovima uglja
Hidraulični bageri primenjuju se u različitim oblastima privrede a najzastupljeniji su u građevinarstvu i rudarstvu. Na površinskim kopovima sa kontinualnim sistemima, klasifikuju kao pomoćna mehanizacija a na površinskim kopovima sa diskontinualnim sistemima, kao osnovna mehanizacija. Kako je u oba slučaja njihova primena neizostavna, važno je izvršiti adekvatnu analizu postojećih podataka, u cilju optimizacije izbora tipa hidrauličnog bagera u odnosu na uslove rada datog površinskog kopa. U radu su opisane različite višekriterijumske metode koje su korišćene za analizu hidrauličnih bagera. ...... tokovi preferencije: 1 ( ) ( , ) j j j m m a a a (3) 1 ( ) ( , ) j j m j m a a a (4) Kako bi se ostvarilo multikriterijumsko rangiranje uvodi se neto tok: ( ) ( ) ( ); 1, ... ,j j j ja a a j J (5) gde je: J – broj alternativa Alternativa ...
... .., ...,ij ij j n MAX MIN A v j K i v j K v v v v i i (20) ' '' 1 2| | , ,..., ...,ij ij j n MIN MAX A v j K i v j K v v v v i i (21) 2 1 ( ) n ij j j Si v v (22) 2 1 ( ) n ij j j Si v v ...
... nesaglasnosti (30): , 1,2, ..., 1,2, ..., ij j ijv w r i m j n (28) ks 1 ( , ) za C = j C jks sjn kj j j w j c a b x xw , (29) max ksmax za D = j D kj sjks ks sj kj j J kj sj v v j d x xv v (30) U sledećem koraku se određuju ...Stevan Đenadić, Predrag Jovančić, Dragan Ignjatović, Filip Miletić, Ivan Janković. "Analiza primene višekriterijumskih metoda u optimizaciji izbora hidruličnih bagera na površinskim kopovima uglja" in Tehnika, Centre for Evaluation in Education and Science (CEON/CEES) (2019). https://doi.org/10.5937/tehnika1903369D
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On the distribution modulo 1 of the sum of powers of a Salem number
Dragan Stankov (2016)It is well known that the sequence of powers of a Salem number θ, modulo 1, is dense in the unit interval, but is not uniformly distributed. Generalizing a result of Dupain, we determine, explicitly, the repartition function of the sequence , where P is a polynomial with integer coefficients and θ is quartic. Also, we consider some examples to illustrate the method of determination.Algebraic integer, the house of algebraic integer, maximal modulus, reciprocal polynomial, primitive polynomial, Schinzel-Zassenhaus conjecture, Mahler measure, method of least squares, cyclotomic polynomialsDragan Stankov. "On the distribution modulo 1 of the sum of powers of a Salem number" in Comptes rendus Mathematique (2016). https://doi.org/10.1016/j.crma.2016.03.012
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A Fuzzy Expert Model for Availability Evaluation
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 ...... indicators (j = 1 … 5). Defined A fuzzy set can be written as: - poor = (1/j=1, 0.25/j=2, 0/j=3, 0/j=4, 0/j=5); - adequate = (0.25/j=1, 1/j=2, 0.25/j=3, 0/j=4, 0/j=5); - average = (0/j=1, 0.25/j=2, 1/j=3, 0.25/j=4, 0/j=5); (7) - good = (0/j=1, 0/j=2, 0.25/j=3, 1/j=4, 0.25/j=5); - excellent ...
... excellent = (0/j=1, 0/j=2, 0/j=3, 0.25/j=4, 1/j=5); B. Questionnaire, statistical processing Employees operating with the bulldozers or connected to their maintenance and logistic are asked to field in questionnaire. Questionnaire have multiple choices for evaluation (linguistic variables) of each ...
... ns. Each combination represents one possible input for synthesis and evaluation of A. Ac = [μR j=1, …, n, μM j=1, …, n ,…, μS j=1, …, n] , for all c = 1 to C (2) If only values of µR,M,S j = 1, …, 5 ≠ 0 are taken into consideration, o outcomes (o = 1 to O, where O˂=C) are obtained. ...Dejan Ivezić, Miloš Tanasijević, Predrag Jovančić, Radiša Đurić. "A Fuzzy Expert Model for Availability Evaluation" in Proceedings of the 2019 20th International Carpathian Control Conference (ICCC), AGH University of Science and Technology, Kraków - Wieliczka, Poland (2019)
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Organoselenium functionalized oxacycles as ligands in some trans-palladium(II) complexes: biological evaluation and interaction with small biomolecules
I. Raković, D. Ćoćić, O. Milošević-Djordjević, I. Radojević, M. N. Živanović, K. Virijević, J. Pavić, J. Tubić Vukajlović, A. Marković, J. S. Marjanović, M. D. Kostić, P. Čanović, A. Mijatović, V. M. Divac (2023)In this article, the biological evaluation and interaction of three selenium-based trans-palladium complexes (Pd–Se1, Pd–Se2, and Pd–Se3) with small biomolecules were performed. The UV–Vis kinetic studies on substitution reaction of synthesized complexes with selected biologically important N- and S-bonding ligands (LCys, GSH, L-Met, 50-GMP, L-His) has emphasized greater affinity of sulphur-based ligands for complex-binding, while the general order of the reactivity was L-Cys > GSH > L-Met > 50-GMP > L-His. The complex reactivity toward small biomolecules is influenced ...I. Raković, D. Ćoćić, O. Milošević-Djordjević, I. Radojević, M. N. Živanović, K. Virijević, J. Pavić, J. Tubić Vukajlović, A. Marković, J. S. Marjanović, M. D. Kostić, P. Čanović, A. Mijatović, V. M. Divac. "Organoselenium functionalized oxacycles as ligands in some trans-palladium(II) complexes: biological evaluation and interaction with small biomolecules" in Journal of Coordination Chemistry, Informa UK Limited (2023). https://doi.org/10.1080/00958972.2023.2256934
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Effects of external noise on threshold-induced correlations in ferromagnetic systems
Dragutin Jovković, Sanja Janićević, Svetislav Mijatović, Lasse Laurson, Đorđe Spasojević. "Effects of external noise on threshold-induced correlations in ferromagnetic systems" in Physical Review E, American Physical Society (APS) (2021). https://doi.org/10.1103/PhysRevE.103.062114
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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... basis set for atoms K through Zn. J. Chem. Phys. 1998, 109, 1223—1229. CrossRef] Rassolov, V.; Ratner, M.; Pople, J.; Redfern, P.; Curtiss, L. 6-31G* basis set for third-row atoms. J. Comput. Chem. 2001, 22, 976–984. CrossRef] Ditchfield, R.; Hehre, W.; Pople, J. Self-Consistent Molecular-Orbital ...
... and diazo dyes. Surf. Interfaces 2020, 19, 100502. [CrossRef] Sun, J.; Li, X.; Zhao, Q.; Ke,J.; Zhang, D. Novel V2O5/BiVO4/TiO2 nanocomposites with high visible-light-induced photocatalytic activity for the degradation of toluene. J. Phys. Chem. C 2014, 118, 10113—10121. [CrossRef] Fu, X.; Tang, W ...
... theory for the calculation of excitation energjies of large molecules. J. Comput. Chem. 2016, 37, 1425-1441. [CrossRef] Bochevarov, A.; Harder, E.; Hughes, T.; Greenwood, J.; Braden, D.; Philipp, D.; Rinaldo, D.; Halls, M.; Zhang, J.; Friesner, R. Jaguar: A high-performance quantum chemistry software ...Sanja J. Armaković, Aleksandra Jovanoski Kostić, Andrijana Bilić, Maria M. Savanović, Nataša Tomić, Aleksandar Kremenović, Maja Šćepanović, Mirjana Grujić-Brojčin, Jovana Ćirković, Stevan Armaković. "Photocatalytic Activity of the V2O5 Catalyst toward Selected Pharmaceuticals and Their Mixture: Influence of the Molecular Structure on the Efficiency of the Process" in Molecules, MDPI AG (2023). https://doi.org/10.3390/molecules28020655
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Insights into dike nucleation and eruption dynamics from high-resolution seismic imaging of magmatic system at the East Pacific Rise
Milena Marjanović, Suzanne M. Carbotte, Alexandre Stopin, Satish C. Singh, René-Édouard Plessix, Miloš Marjanović, Mladen R. Nedimović, Juan Pablo Canales, Hélène D. Carton, John C. Mutter, Javier Escartín (2023)Milena Marjanović, Suzanne M. Carbotte, Alexandre Stopin, Satish C. Singh, René-Édouard Plessix, Miloš Marjanović, Mladen R. Nedimović, Juan Pablo Canales, Hélène D. Carton, John C. Mutter, Javier Escartín. "Insights into dike nucleation and eruption dynamics from high-resolution seismic imaging of magmatic system at the East Pacific Rise" in Science Advances, American Association for the Advancement of Science (AAAS) (2023). https://doi.org/10.1126/sciadv.adi2698
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Application of the Fuzzy Model in the Evaluation and Selection of Hydraulic Excavators on Open-Pit Lignite Mine
Stevan Đenadić, Miloš Tanasijević, Vladimir Milisavljević, Dragan Ignjatović, Predrag Jovančić (2021)The production of lignite in large open-pit mines is mainly performed with continuously operating equipment, where bucket-wheel excavators, bucket-chain excavators, belt conveyors, and spreaders are the basic machines. Smaller machines, usually of discontinuous operating nature, are commonly categorized as auxiliary machines. This paper presents the research related to the analysis of auxiliary machine parameters with the case study for a hydraulic excavator. The purpose of the analysis was to develop a model of rating quality of service of the ...Stevan Đenadić, Miloš Tanasijević, Vladimir Milisavljević, Dragan Ignjatović, Predrag Jovančić. "Application of the Fuzzy Model in the Evaluation and Selection of Hydraulic Excavators on Open-Pit Lignite Mine" in SSRN Electronic Journal, Elsevier BV (2021). https://doi.org/10.2139/ssrn.3945617
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BaTiO3/NixZn1−xFe2O4 (x = 0, 0.5, 1) Composites Synthesized by Thermal Decomposition: Magnetic, Dielectric and Ferroelectric Properties
Marija Šuljagić, Ivan Petronijević, Miljana M. Mirković, Aleksandar Kremenović, Adis Džunuzović, Vladimir B. Pavlović, Aleksandra Kalezić-Glišović, Ljubica Andjelković (2023)To investigate the influence of spinel structure and sintering temperature on the functional properties of BaTiO3/NixZn1−xFe2O4 (x = 0, 0.5, 1), NiFe2O4, ZnFe2O4, and Ni0.5Zn0.5Fe2O4 were in situ prepared by thermal decomposition onto BaTiO3 surface from acetylacetonate precursors. As-prepared powders were additionally sintered at 1150 °C and 1300 °C. X-ray powder diffraction (XRPD) and scanning electron microscopy (SEM) coupled with electron dispersive spectroscopy (EDS) were used for the detailed examination of phase composition and morphology. The magnetic, dielectric, and ...ferroelectric, dielectric properties, magnetic properties, titanate/ferrite composites, phase composition... maximum coupling, in multiferroic magnetoelectric composites by material design. Sci. Rep. 2018, 8, 4866. [CrossRef] Feng, M.; Wang, J.; Hu, J.-M.; Wang, J.; Ma, J.; Li, H.-B.; Shen, Y.; Lin, Y.-H.; Chen, 1.-Q.; Nan, C.-W. Optimizing, direct magnetoelectric coupling, in Pb(Zr,Ti)Os/Ni multiferroic ...
... Petkov, V.; Priya, S. Room-temperature magnetoelectric coupling, in single-phase BaTiOs-BiFeOy system. J. Appl. Phys. 2013, 113, 144101. [CrossRef] Patil, D.; Kim, J.-H.; Chai, Y.S.; Nam, J.-H.; Cho, J.-H.; Kim, B.-I.; Kim, K.H. Large Longitudinal Magnetoelectric Coupling, in NiFe>»Oa-BaTiOy Laminates ...
... 2020, 10, 2072. [CrossRet] 8. _ Mao, Q.; Wu, J.; Hu, Z.; Xu, Y.; Du, Y.; Hao, Y.; Guan, M.; Wang, C.; Wang, Z.; Zhou, Z.; et al. Magnetoelectric devices based on magpnetoelectric bulk composites. J. Mater. Chem. C 2021, 9, 5594–5614. [CrossRef] 9. · Hu,J.-M.; Duan, C.-G.; Nan, C.-W.; Chen, L.-Q. U ...Marija Šuljagić, Ivan Petronijević, Miljana M. Mirković, Aleksandar Kremenović, Adis Džunuzović, Vladimir B. Pavlović, Aleksandra Kalezić-Glišović, Ljubica Andjelković. "BaTiO3/NixZn1−xFe2O4 (x = 0, 0.5, 1) Composites Synthesized by Thermal Decomposition: Magnetic, Dielectric and Ferroelectric Properties" in Inorganics, MDPI AG (2023). https://doi.org/10.3390/inorganics11020051
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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.... j 1 8 j 6 j j j j j j 5 5 j j j j 3 j 4 7 j j 5 8 j 2 4 8 3 1 j 1 3 3 7 j j j 7 4 3 4 6 7 1 4 j 3 j j j j j j 2 4 8 3 1 j 1 3 3 7 j j j 4 j j 1 6 j j j j j j 5 j j 4 4 j 1 2 6 j 5 5 1 j j j j j j 8 j 1 6 j j j j j j 5 j 4 4 5 j j j 3 6 j 2 j 1 j j 2 j j 1 5 8 2 2 7 6 j j 8 8 j j j j 1 1 1 1 1 1 1 ...
... 3 1 j 2 j 2 1 4 j 8 7 4 8 j 1 2 j j j j j j j j j j j 8 2 3 1 j 2 j 2 1 4 j 3 4 j 7 5 j 1 8 5 j 6 6 j j 5 7 j 2 4 j j j 4 6 6 j 7 j j j j j j 5 j 1 8 5 j 6 6 j j 5 2 j j 3 3 8 j 4 2 6 6 4 j 7 2 j j j j j 5 7 3 2 2 j 5 6 j j j j j 3 8 j 4 2 6 6 4 j 7 2 j 7 8 2 j 5 5 j j j j 3 j 4 7 j 2 1 1 6 j j j j ...
... stopa: 10% j j j j 3 6 j 2 j 1 j j 6 1 j 1 7 6 8 1 j 4 7 j 1 6 j 8 j j j 4 5 7 8 4 2 8 j 3 j j j j j j 6 8 1 j 4 7 j 1 6 j 2 j 7 8 j 4 6 j 1 4 8 j 7 5 8 j 1 8 j 3 j 6 7 1 8 5 j 1 5 j j j j j 4 6 j 1 4 8 j 7 5 8 j 7 j j 8 j 5 5 j j 3 4 j 1 5 6 j j 6 8 j 4 j j j 3 2 j j j j j j j j 5 5 j j 3 4 j 1 5 6 8 ...Dejan R. Stevanović. "Optimizacija i planiranje površinskih kopova stohastičkim modelima" in Универзитет у Београду, Универзитет у Београду, Рударско-геолошки факултет (2015-05-29)
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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.... j 1 8 j 6 j j j j j j 5 5 j j j j 3 j 4 7 j j 5 8 j 2 4 8 3 1 j 1 3 3 7 j j j 7 4 3 4 6 7 1 4 j 3 j j j j j j 2 4 8 3 1 j 1 3 3 7 j j j 4 j j 1 6 j j j j j j 5 j j 4 4 j 1 2 6 j 5 5 1 j j j j j j 8 j 1 6 j j j j j j 5 j 4 4 5 j j j 3 6 j 2 j 1 j j 2 j j 1 5 8 2 2 7 6 j j 8 8 j j j j 1 1 1 1 1 1 1 ...
... 3 1 j 2 j 2 1 4 j 8 7 4 8 j 1 2 j j j j j j j j j j j 8 2 3 1 j 2 j 2 1 4 j 3 4 j 7 5 j 1 8 5 j 6 6 j j 5 7 j 2 4 j j j 4 6 6 j 7 j j j j j j 5 j 1 8 5 j 6 6 j j 5 2 j j 3 3 8 j 4 2 6 6 4 j 7 2 j j j j j 5 7 3 2 2 j 5 6 j j j j j 3 8 j 4 2 6 6 4 j 7 2 j 7 8 2 j 5 5 j j j j 3 j 4 7 j 2 1 1 6 j j j j ...
... stopa: 10% j j j j 3 6 j 2 j 1 j j 6 1 j 1 7 6 8 1 j 4 7 j 1 6 j 8 j j j 4 5 7 8 4 2 8 j 3 j j j j j j 6 8 1 j 4 7 j 1 6 j 2 j 7 8 j 4 6 j 1 4 8 j 7 5 8 j 1 8 j 3 j 6 7 1 8 5 j 1 5 j j j j j 4 6 j 1 4 8 j 7 5 8 j 7 j j 8 j 5 5 j j 3 4 j 1 5 6 j j 6 8 j 4 j j j 3 2 j j j j j j j j 5 5 j j 3 4 j 1 5 6 8 ...Dejan R. Stevanović. "Optimizacija i planiranje površinskih kopova stohastičkim modelima" in Универзитет у Београду, Универзитет у Београду, Рударско-геолошки факултет (2015-05-29)
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Triassic rift-type basalts and related deep-water sediments in the western ophiolite belt of the Hellenides-Dinarides (from Othrys Mts., Greece to Darno Hill, NE Hungary)
Palinkaš L., Kovacs S., Molnar F., Haas J., Jozsa S., Dosztaly L., Gulacsi Z., Kiss G., Kover S., Ozsvart P., Mikes T., Halamić J., Hravtovič H., Sudar Milan, Jovanović D., Đerić Nevenka, Migiros G, Papanikolau D., Tselepidis V. (2010)Palinkaš L., Kovacs S., Molnar F., Haas J., Jozsa S., Dosztaly L., Gulacsi Z., Kiss G., Kover S., Ozsvart P., Mikes T., Halamić J., Hravtovič H., Sudar Milan, Jovanović D., Đerić Nevenka, Migiros G, Papanikolau D., Tselepidis V.. "Triassic rift-type basalts and related deep-water sediments in the western ophiolite belt of the Hellenides-Dinarides (from Othrys Mts., Greece to Darno Hill, NE Hungary)" in Proceedings of the 19th Congress of the Carpathian Balkan Geological Association, Thessaloniki, Greece, 23-26 September 2010, (Abstract Volume), Geologica Balcanica, Sofia:Carpathian-Balkan Geological Association (2010): 285-286
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Laboratory Testing of Nanosilica- Reinforced Silicate and Polyacrylamide Gels
Irina Zahirovic, Dušan Danilović, Milica Šuput Vranjin, Miloš Tripković. "Laboratory Testing of Nanosilica- Reinforced Silicate and Polyacrylamide Gels" in SPE Journal (2023)
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Threshold-induced correlations in the Random Field Ising Model
... e�ective magnetic �eld acting on spin Si is ∑= + +h J S H h , (21) i j j i eff where Sj are the nearest neighbors of Si, and J > 0 is a ferromagnetic coupling constant. Hence, the system Hamiltonian reads ∑ ∑ ∑= − − − 〈 〉 J S S H S h S , (22)i j i j i i i i i , and in this expression the �rst ...
... Vth); thus, see Fig. 1a, = + +T i j V T i V T i j V T j V( , ; ) ( ; ) ( , ; ) ( ; ), (1)ext th end th mid th ini th where Tend(i; Vth) is the time taken by the avalanche i to end (i.e. fall from Vth to zero), Tmid(i, j; Vth) is the time spent by a whole sequence of consecutive avalanches that lie between ...
... (i.e. fall from V,, to zero), Tpig(is j; Vin) is the time spent by a whole sequence of consecutive avalanches that lie between the avalanches i and j and remain below V,, (note that this sequence may be empty), and T;,;(j; Vi,) is the time taken by the avalanche j to rise from zero to Vip. In the main ...Sanja Janićević, Dragutin Jovković, Lasse Laurson, Đorđe Spasojević. "Threshold-induced correlations in the Random Field Ising Model" in Scientific Reports, Springer Science and Business Media LLC (2018). https://doi.org/10.1038/s41598-018-20759-6
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Understanding the effect of synthesis and sintering temperature on the functional properties of barium titanate/cobalt ferrite composites
Marija Šuljagić, Aleksandar Kremenović, Ivan Petronijević, Adis Džunuzović, Miljana Mirković, Vladimir Pavlović, Ljubica Anđelković (2023)To investigate the effect of synthesis procedure and sintering temperature on the functional properties of perovskite/spinel ceramics, BaTiO3/CoFe2O4 composites were prepared by thermal decomposition, coprecipitation, and microemulsion method, and sintered at 1150°C and 1300°C. The phase composition and morphology of as-prepared powders as well as sintered ceramics were thoroughly examined by X-ray powder diffraction (XRPD) and scanning electron microscopy (SEM) coupled with electron dispersive spectroscopy (EDS). The dielectric and ferroelectric measurements were performed in detail. Generally, the ...Marija Šuljagić, Aleksandar Kremenović, Ivan Petronijević, Adis Džunuzović, Miljana Mirković, Vladimir Pavlović, Ljubica Anđelković. "Understanding the effect of synthesis and sintering temperature on the functional properties of barium titanate/cobalt ferrite composites" in Science of Sintering (2023). https://doi.org/10.2298/SOS220512013S