Претрага
2167 items
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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. "Definition of criteria and alternatives for choosing the optimal mining method deposits when applying multi: Criteria optimization, Belgrade, June 2024" in Podzemni radovi, Beograd, jun 2024, Centre for Evaluation in Education and Science (CEON/CEES) (2024). https://doi.org/10.5937/podrad2444071B
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Building learning capacity by blending different sources of knowledge
... described and tagged in a standard way, and in machine readable form. This makes resources more easily located by search engines, and results returned by are more relevant. Both educators and learners can find and compare described and tagged learning materials more efficiently, and select the ...
... mathematics and informatics at the University of Belgrade Faculty of Mining and Geology and director of the University of Belgrade Center for e-learning and distance education. He has published four books and more than 130 scientific papers related to artificial intelligence methods and tools, language ...
... materials openly and freely to educators, students, and self-learners to use and reuse for teaching, learning, and research, under an open source license (Bissell, 2009). The worldwide OER community established the Open Education Consortium, with hundreds of higher education institutions and associated ...Ivan Obradović, Ranka Stanković, Olivera Kitanović, Dalibor Vorkapić. "Building learning capacity by blending different sources of knowledge" in International Journal of Learning and Intellectual Capital (2016). https://doi.org/10.1504/IJLIC.2016.075698
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Mineralogical study of clays from Dobrodo, Serbia, for use in ceramics
Maja Milošević, Predrag Dabić, Sabina Kovač, Lazar Kaluđerović, Mihovil Logar. "Mineralogical study of clays from Dobrodo, Serbia, for use in ceramics" in Clay Minerals, Mineralogical Society (2019). https://doi.org/10.1180/clm.2019.49
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Determination of Mechanical Properties of Altered Dacite by Laboratory Methods
This paper presents a methodology for determining the uniaxial and triaxial compressive strength of heterogeneous material composed of dacite (D) and altered dacite (AD). A zone of gradual transition from altered dacite to dacite was observed in the rock mass. The mechanical properties of the rock material in that zone were determined by laboratory tests of composite samples that consisted of rock material discs. However, the functional dependence on the strength parameter alteration of the rock material (UCS, intact ...... parameters and mechanism of fail- ure. Intact rock properties σci and mi for homogeneous rock mass should be carefully considered. Using the hard rock properties to determine the overall strength of the rock mass is not appropriate. On the other hand, using the intact properties of the weak rock is too ...
... the heterogeneous rock mass. Based on these recommendations, the intact strength properties of a heterogeneous rock mass σci and mi were determined for 0%, 50%, and 100% of the weaker rock material (altered dacite) volumetric participation. The dependence of the σci and mi parameters and the altered dacite ...
... on its participation and the structure of the heterogeneous rock mass when estimating the strength parameters of the heterogeneous rock mass. The values of intact strength properties of a heterogeneous rock mass σci and mi for 0%, 10%, 30%, 50%, 70%, and 100% of the weaker rock material (altered dacite) ...Veljko Rupar, Vladimir Čebašek, Vladimir Milisavljević, Dejan Stevanović, Nikola Živanović. "Determination of Mechanical Properties of Altered Dacite by Laboratory Methods" in Minerals, MDPI AG (2021). https://doi.org/10.3390/min11080813
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Mineralogical analysis of a clay body from Zlakusa, Serbia, used in the manufacture of traditional pottery
... essential to defining the properties of green pastes during drying and firing (Rivi & Ries, 1997; Milošević et al, 2019a). The tested CIMx and ClIBd samples contain 86.3 and 32.9 wt.% of clay, 10.8 and 6.4 wt.% of silt and 2.8 and 60.6 wt.% of sand fractions, respect- ively. The particle analysis ...
... limestone and dolomite [ Sandstone,shale, marl, and limestone Quartz conglomerate, sandstone quartz breccia, and siltstone 'Sandstone, slate, and phyllite Metasandstone Piedmont deposits Alluvium Microfauna Research area Lat: 43.7883000 Lon:19.9884700 Fig. 1. Geographical (left) and geological ...
... (LCPC, 1987) and calculated according to Atterberg (1911). Results and discussion Chemical composition 'The chemical composition of the CIMx indicates that the raw clay material used for the ceramic production consists mainly of AL,}O, (~16 wt.%) and SiO> (~57 wt.%) and minor CaO, KO and TiO» (Table ...Maja Milošević, Biljana Đorđević, Mihovil Logar. "Mineralogical analysis of a clay body from Zlakusa, Serbia, used in the manufacture of traditional pottery" in Clay Minerals (2020). https://doi.org/10.1180/clm.2020.20
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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 ...... pancreatic phospholipase A2 and [RuCl2(bipy)2]Cl (A) or [PtCl4(bipy)] (B). Peaks of interest are labeled: 486.3 and 490.3 for proton and sodium adducts of LPC 14 : 0 used as internal standard; 496.3 and 518.3 for proton and sodium adducts of LPC 16 : 0; 760.6 and 782.6 for proton and sodium adducts of PC ...
... pancreatic phospholipase A, and [RuCl,(bipy)s|Cl (A) or [PtCl(bipy)] (B). Peaks of interest are labeled: 486.3 and 490.3 for proton and sodium adducts of LPC 14:0 used as internal standard; 496.3 and 518.3 for proton and sodium adducts of LPC 16:0; 760.6 and 782.6 for proton and sodium adducts of PC 16:0 ...
... A2 for 0, 1, 2, 5, 15 and 60 min. Labeled peaks belong to the following ion species: m/z = 760.6 and m/z = 782.6 for proton and sodium adducts of PC 16 : 0, 18 : 1, respectively; m/z = 496.3 and m/z = 518.3 for proton and sodium adducts of LPC 16 : 0, respectively. Proton and sodium adducts of internal ...Tina Kamčeva, Jörg Flemmig, Bojana Damnjanović, Jürgen Arnhold, Aleksandar Mijatović, Marijana Petković. "Inhibitory effect of platinum and ruthenium bipyridyl complexes on porcine pancreatic phospholipase A2" in Metallomics, Oxford University Press (OUP) (2011). https://doi.org/10.1039/c1mt00088h
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Formative evaluation of e-learning projects with the logical framework approach
... 2. EVALUATION OF PROGRAM AND PROJECTS The scientific debate on the evaluation of projects becomes more and more interesting in light of the large economic investments in projects and programs, and the difficulty of assessing the genuine and effective economic and social returns. This issue ...
... Evaluation is the activity aimed to study, evaluate and improve programs and projects in all their important aspects, including the diagnosis of the problem to address, their conception and design, their implementation and management, their effects and their efficiency [4]. Evaluation is a cognitive ...
... effects and impacts, on individuals and organizations, to support the applicant in the design phase. This last purpose is increasingly important for all the stakeholders of e-learning projects (i.e. universities, companies, communities, as well as students and employees), due to a global and highly ...Roberto Linzalone, Giovani Schiuma, Ivan Obradović, Ranka Stanković. "Formative evaluation of e-learning projects with the logical framework approach" in The Sixth International Conference on e-Learning (eLearning-2015), September 2015, Belgrade, Serbia, Belgrade Metropolitan Univesity (2015)
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Surface functional groups and degree of carbonization of selected chars from different processes and feedstock
Marija Ilić, Franz-Hubert Haegel, Aleksandar Lolić, Zoran Nedić, Tomislav Tosti, Ivana Sredović Ignjatović, Andreas Linden, Nicolai D. Jablonowski, Heinrich Hartmann (2022)The knowledge ofthe structural and chemical properties of biochars is decisive for their application as technical products. For this reason, methods for the characterization of biochars that are generally applicable and allow quality control are highly desired. Several methods that have shown potential in other studies were used to investigate two activated carbons and seven biochars from different processes and feedstock. The chars were chosen to cover a wide range of chemical composition and structural properties as a hardness ...Biougalj, različiti procesi dobijanja, različite sirovine, površinski aktivne grupe, x-ray, FT-IR,XPS... intercept is 0.067 and represents the mean influence of the initial composition of the biomass and the changes due thermal degradation. Decarboxylation and decarbonylation result in lower O/C and higher H/C, dehydrogenation in lower H/C and demethanization in lower H/C and higher O/C. Evolution ...
... a broad double peak for amorphous carbon between 5 and 29". In addition, HW500f shows sharp intense peaks of quartz and small peaks for Whewellite (Ca(C>Ox)·H»O) at 24.38* and 14.86* (3.650 and 2.987 A) [53] and calcite. The presence of Si and Ca is consistent with the chemical composition (Table ...
... vibrations [85] and may contain overlapping peaks of oxygen functional groups (few oxygen content here). The bands at 873 (untreated) and 872 (treated), 808 (untreated) and 809 (treated) and 748 cm ”' (treated and untreated) for aromatic out-of-plain CH deformation [85,94] are well resolved and relatively ...Marija Ilić, Franz-Hubert Haegel, Aleksandar Lolić, Zoran Nedić, Tomislav Tosti, Ivana Sredović Ignjatović, Andreas Linden, Nicolai D. Jablonowski, Heinrich Hartmann. "Surface functional groups and degree of carbonization of selected chars from different processes and feedstock" in PLOS ONE (2022). https://doi.org/10.1371/journal.pone.0277365
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Sustainable Modularity Approach to Facilities Development Based on Geothermal Energy Potential
The study presented in this paper assessed the multidisciplinary approach of geothermal potential in the area of the most southeastern part of the Pannonian basin, focused on resources utilization. This study aims to present a method for the cascade use of geothermal energy as a source of thermal energy for space heating and cooling and as a resource for balneological purposes. Two particular sites were selected—one in a natural environment; the other within a small settlement. Geothermal resources come ...геотермална енергија, Панонски басен, геотермална каскада, енергетска ефикасност, бањски центри, балнеологија, биоклиматска архитектура, стратегије пасивног дизајнирања, модуларни објекти... types of geothermal reservoirs: fractured and karstified basement reservoirs, and sand/sandy-clay basin-fill reservoirs. The bedrock of the basin in a wider study area is represented by all types of rock: metamorphic, igneous and sedimentary, whereas the Neogene-Quaternary complex is represented by conglomerates ...
... intercalated ophiolites, ophiolitic mélange, and volcanics of the Upper Appl. Sci. 2021, 11, 2691 11 of 24 Permian–Paleogene period, and (3) Miocene–Quaternary sediments [39]. Palaeozoic meta- morphites are in tectonic contact with low- and middle-Triassic rock [40]. In terms of its geothermal features ...
... presence of very thick Neogene sediment (up to 3.5 km), overlaying magmatite and metamorphic rock. The correlation between low geothermal gradients and geological settings of this area can also be found in the existence of marly and silty layers at depths greater than 1000 m. Geothermal gradients measured ...Nataša Čuković-Ignjatović, Ana Vranješ, Dušan Ignjatović, Dejan Milenić, Olivera Krunić. "Sustainable Modularity Approach to Facilities Development Based on Geothermal Energy Potential" in Applied Sciences-Basel, МDPI (2021). https://doi.org/10.3390/app11062691
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Damage quantification of built stone on Dark Gate (Belgrade, Serbia): sample of damage index application for decay rate evaluation
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 ...... This study commenced with detailed study of the Monu- ment: survey, classification, and registration of lithological types and weathering forms. Mapping models used in the study included rock type mapping and weathering form mapping. Determination of damage categories on built stone blocks ...
... uniformly distributed quartz/quarzite grains and it built up to 10–15 % vol. rock. The cement is sparite pigmented with iron oxides. Rudstone microfacies have an intergranular and intragranular porosity. The results of lithological mapping of north and south facades of Dark Gate are documented ...
... Fig. 6 The percentage amount of built rock type of the Dark Gate to gate's orientation to the south and north, do not differ considerably among themselves and from the damage indices for the whole gate. Only when the gate is consid- ered by its east and west oriented halves, can be noted that ...Maja Franković, Nevenka Novaković, Vesna Matović. "Damage quantification of built stone on Dark Gate (Belgrade, Serbia): sample of damage index application for decay rate evaluation" in Environmental Earth Sciences, Springer Science and Business Media LLC (2015). https://doi.org/10.1007/s12665-014-3843-z
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Rule-based Automatic Multi-word Term Extraction and Lemmatization
In this paper we present a rule-based method for multi-word term extraction that relies on extensive lexical resources in the form of electronic dictionaries and finite-state transducers for modelling various syntactic structures of multi-word terms. The same technology is used for lemmatization of extracted multi-word terms, which is unavoidable for highly inflected languages in order to pass extracted data to evaluators and subsequently to terminological e-dictionaries and databases. The approach is illustrated on a corpus of Serbian texts from ...... following the seminal work of Kenneth Church and Patrick Hanks (1990; 1991) and Frank Smadja (1993). A language independent statistical corpus based term extraction algorithm used on English and Chinese corpora is described in (Pantel&Lin, 2001), while Chen and his associates present a MWT extraction ...
... linguistic rules to parse documents and retrieve candidate terms and statistical measures to deal with ambiguities and rank candidate terms is given in (Bounhas&Slimani, 2009). Several hybrid methods for extraction of MWT candidates that use both syntactic patterns and statistical measures, mainly ...
... Section 5 we give some concluding remarks and present plans for system improvement. 2. Methodology and Design Entries in the Serbian e-dictionary of general multi-word units (MWUs) are classified according to their syntactic structure and inflectional and other properties (omission of a constituent ...Ranka Stanković, Cvetana Krstev, Ivan Obradović, Biljana Lazić, Aleksandra Trtovac. "Rule-based Automatic Multi-word Term Extraction and Lemmatization" in Proceedings of the 10th International Conference on Language Resources and Evaluation, LREC 2016, Portorož, Slovenia, 23--28 May 2016, European Language Resources Association (2016)
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Synthesis and characterization of high-pressure and high-temperature sphene (CaTiSiO5)
Jelena Pantić, Vladimir Urbanovich, Vesna Poharc-Logar, Bojan Jokić, Marija Stojmenović, Aleksandar Kremenović, Branko Matović (2014)Sphene (CaTiSiO5), a calcium titanosilicate ceramic has been prepared from a powder mixture of CaCO3, TiO2 and SiO2 using vibro-milling for homogenization and activation of precursors. During the highpressure and high-temperature synthesis (HPS) process at 4 GPa and 1,200 °C, sphene undergoes into phase transition, from room-temperature phase P21/a to high-temperature phase A2/a. Evidence of that structural phase transition is given in this paper using infrared, Raman spectroscopy and X-ray powder diffraction. Rietveld refinement was employed to get the ...Jelena Pantić, Vladimir Urbanovich, Vesna Poharc-Logar, Bojan Jokić, Marija Stojmenović, Aleksandar Kremenović, Branko Matović. "Synthesis and characterization of high-pressure and high-temperature sphene (CaTiSiO5)" in Physics and Chemistry of Minerals, Springer Science and Business Media LLC (2014). https://doi.org/10.1007/s00269-014-0693-x
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Hydrochemical changes and groundwater grouping data by multivariate statistical methods within one karst system: recharge–discharge zone (Eastern Serbia case study)
Ljiljana Vasić, Dragana Živojinović, Vladana Rajaković-Ognjanović. "Hydrochemical changes and groundwater grouping data by multivariate statistical methods within one karst system: recharge–discharge zone (Eastern Serbia case study)" in Carbonates and Evaporites, Springer Science and Business Media LLC (2020). https://doi.org/10.1007/s13146-019-00548-6
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Flood protection and water utilization of karst poljes: example of Gatačko Polje, Eastern Herzegovina
Tina Dašić, Ljiljana Vasić (2020)Earth-Surface Processes,Geology, Pollution, Soil Science, Water Science and Technology, Environmental Chemistry,Global and Planetary ChangeTina Dašić, Ljiljana Vasić. "Flood protection and water utilization of karst poljes: example of Gatačko Polje, Eastern Herzegovina" in Environmental Earth Sciences, Springer Science and Business Media LLC (2020). https://doi.org/10.1007/s12665-020-08987-4
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A Tel Platform Blending Academic And Entrepreneurial Knowledge
... (multilingual) corpora of lessons and texts in written form, and functionalities for searching and browsing of terminological resources and using them for text annotation. The contents of these resources conform to the methodic/didactic quality criteria and contain very rich metadata sets that ...
... of interest and willingness among academia and/or enterprise to participate in producing high quality OER content. A similar lack of interest and willingness among students to invest extra work in learning and knowledge sharing is also a threat. Insufficient availability and accessibility ...
... home campus and thus better prepare themselves in case they are considering to continue their studies abroad. Another goal of BAEKTEL is to be an efficient tool for facilitating and enhancing partnerships between universities and enterprises through blending of academic and entrepreneurial ...Ivan Obradović, Ranka Stanković, Jelena Prodanović, Olivera Kitanović. "A Tel Platform Blending Academic And Entrepreneurial Knowledge" in Proceedings of the The Fourth International Conference on e-Learning (eLearning-2013), September 2013, Belgrade, Serbia, Belgrade, Serbia : Belgrade Metropolitan University (2013)
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Pre-failure deformation monitoring as rockfall prediction tool
... allows planning, prevention and protection, and there is a great deal of interest to standardize it for high-risk slopes and cuts in rock masses. 1. Introduction Rockfalls are studied from various aspects and should be first observed from a wider, geo-structural and geomorphological context, ...
... photographs, suggesting that freshly detached rock bridges will seem more colorful and unweathered unlike joint surfaces or exposed facets. They combined pixel and point-cloud based processing algorithms to reveal fresh scars and rock bridges automatically, and then iteratively per each scanning/imaging ...
... periods; runout and velocity. In practice, this is rarely as systematic as it should be, and data are usually scarce. Modeling and simulation is another tool that can be used to estimate some of the rockfall parameters and compensate for the lack of specific data [1]. Suspicious rock faces can be ...Miloš Marjanović, Biljana Abolmasov, Zoran Berisavljević, Marko Pejić, Petko Vranić. "Pre-failure deformation monitoring as rockfall prediction tool" in IOP Conference Series: Earth and Environmental Science, IOP Publishing (2021). https://doi.org/10.1088/1755-1315/833/1/012197
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Examination and characterization of nanostructured Co0.9Ho0.1MoO4
Милена Росић, Маја Милошевић, Мариа Чебела, Владимир Додевски, Весна Лојпур, Марија Васић, Александра Зарубица (2023)... Technology and Metallurgy Institute for Technology of Nuclear and Other Raw Mineral Materials PROGRAM AND THE BOOK OF ABSTRACTS Serbian Academy of Sciences and Arts, Knez Mihailova 35 Serbia, Belgrade, 18-–20. September 2023. Serbian Ceramic Society Conference ADVANCED CERAMICS AND APPLICATION ...
... Advanced Ceramics and Application : New Frontiers in Multifunctional Material Science and Processing (11 ; 2023 ; Beograd) Program ; and the Book of abstracts / Serbian Ceramic Society Conference Advanced Ceramics and Application XI New Frontiers in Multifunctional Material Science and Processing, Serbian ...
... Александра Зарубица | Serbian Ceramic Society Conference - Аdvanced ceramics and application XI New Frontiers in Multifunctional Material Science and Processing Program and the Book of Abstracts, Serbian Academy of Sciences and Arts, Serbia, Belgrade, 18-20. September 2023. | 2023 | | http://dr.rgf.bg ...Милена Росић, Маја Милошевић, Мариа Чебела, Владимир Додевски, Весна Лојпур, Марија Васић, Александра Зарубица. "Examination and characterization of nanostructured Co0.9Ho0.1MoO4" in Serbian Ceramic Society Conference - Аdvanced ceramics and application XI New Frontiers in Multifunctional Material Science and Processing Program and the Book of Abstracts, Serbian Academy of Sciences and Arts, Serbia, Belgrade, 18-20. September 2023., Belgrade : Serbian Ceramic Society (2023)
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Stratigraphy and microfossils (radiolarians and planktonic foraminifers) of the Upper Cretaceous (upper Santonian–lower Campanian) Struganik limestone (Western Serbia)
Liubov G. Bragina, Nikita Yu. Bragin, Ludmila F. Kopayevich, Nevenka Đerić, Nataša Gerzina Spajić (2019)Liubov G. Bragina, Nikita Yu. Bragin, Ludmila F. Kopayevich, Nevenka Đerić, Nataša Gerzina Spajić. "Stratigraphy and microfossils (radiolarians and planktonic foraminifers) of the Upper Cretaceous (upper Santonian–lower Campanian) Struganik limestone (Western Serbia)" in Palaeoworld, Elsevier BV (2019). https://doi.org/10.1016/j.palwor.2019.05.001
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INVENTS: A Hybrid Mine Ventilation Planning and Design System
Ventilation system analysis is a complex process based on the calculation and analysis of numerous parameters. These problems can be successfully solved by the SimVent numerical package, but a full understanding and use of the obtained results require the involvement of an experienced specialist in the ventilation field. The solution was found in the creation of a hybrid system INVENTS, whose knowledge base represents a formalization of the expert knowledge in the mine ventilation field. In this paper we ...... estimation ventilation simulation Design CFD Estimates estimation of gas and dust emission and temperature conditions flow process modelling using CFD Data acquis ition ventilation and psychrometric parameters ventilation and psychrometric parameters Fig. 3. Architecture of the hybrid system INVENTS ...
... Professor, Faculty of Mining and Geology, University of Belgrade, Djusina 7, 11.000 Belgrade 2 Bsc, Faculty of Mining and Geology, University of Belgrade, Djusina 7, 11.000 Belgrade Abstract: Ventilation system analysis is a complex process based on the calculation and analysis of numerous parameters ...
... the hybrid system INVENTS, as well as system structure and user interface. Keywords: hybrid systems, mine ventilation, expert systems 1. Introduction The methodology of mine ventilation planing and design in contemporary mine theory and practice differs substantially from the traditional approach ...Lilić Nikola, Stanković Ranka, Obradović Ivan. "INVENTS: A Hybrid Mine Ventilation Planning and Design System" in Proceedings of International Scientific Conference of FME Session 4: Automation Control and Applied Informatics , Hong Kong : iConcept Press (2013)
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Geoenvironmental Investigations at a Smelter Location in Bor (Serbia)
Petar Papić, Zvonimir Milijić, Jana Stojković, Jovana Milosavljević, Maja Todorović, Marina Ćuk, Željko Kamberović (2014)Petar Papić, Zvonimir Milijić, Jana Stojković, Jovana Milosavljević, Maja Todorović, Marina Ćuk, Željko Kamberović. "Geoenvironmental Investigations at a Smelter Location in Bor (Serbia)" in Challenges : Sustainable Land Management – Climate Change, Advances in Geoecology 43, Catena Verlag GMBH (2014)