Претрага
692 items
-
Improvement of geodatabase queries within GeolISS
Ranka Stanković (2008)... for description of spatial data. The previously selected geological unit is shown in figure 2. Each type of geological spatial data has an appropriate form for data management, with the possibility of adding various related data, such as geochemical and geophysical analysis, different types of me ...
... GeolISS The Geological information system of Serbia (GeolISS) represents a repository for digital archiving, query, retrieving, analysis and visualization of geological data. The development and implementation of the GeolISS is managed by a team from the Faculty of Mining and Geology of Belgrade ...
... query 6. Conclusion GeolISS has proved as a substantial and reliable foundation for digital archiving, query, retrieving, analysis and visualization of geological data. GeolISS has been implemented in ESRI ArcGIS technology, designed to function as a personal geodatabase and SDE enterprise ...Ranka Stanković. "Improvement of geodatabase queries within GeolISS" in Review of the National Center for Digitization, Beograd : Faculty of Mathematics, Belgrade (2008)
-
Hidrogeohemijska valorizacija esencijalnih mikroelemenata mineralnih voda Srbije
Jana S. Stojković (2013-09-25)Mineralne vode još od davnina privlače pažnju ljudi i to kako u pogledu istraživanja iproučavanja, tako i u pogledu njihovog iskorišćavanja. Naročito je važno poznavanjesadržaja mikroelemenata u njima, jer su to komponente njihovog hemijskog sastavakoje ih odvajaju od tzv. „običnih“ malomineralizovanih voda.U ovom radu proučavani su odabrani esencijalni mikroelementi (fluor, bor, litijum,kalijum, stroncijum i silicijum), u mineralnim vodama Srbije, pri čemu je analiziranopreko 130 uzoraka mineralnih voda iz različitih geoloških sredina, to jest hidrogeološkihrejona. Cilj ovog istraživanja bio je ...esencijalni mikroelementi, faktori migracije, zakonomernosti rasprostranjenja, hidrogeohemijski procesi, multivarijantna statistička analiza, mineralne vode Srbije... methodology has been used during the field measurements and laboratory analysis, as well as for systematization and data analysis. Multivariate statistical analysis (factor analysis, Q-mode cluster analysis and R-mode cluster analysis) has been applied on the research results of physical and chemical ...
... koja služi za proveru da li je veličina ispitivanog skupa podataka dovoljna, tj. da li za dati broj analiziranih varijabli imamo dovoljan broj uzoraka voda. Ova vrednost pomaže u proceni da li je primena faktorne analize prikladna u datom slučaju (Field 2005). S obzirom da pomenuta vrednost KMO ...
... konstatovano je da je dati skup podataka adekvatne veličine i da je primena faktorne analize moguća. Pored proračuna vrednosti KMO, rađen je i Bartletov test, kojim se proverava da li su analizirane varijable u zadovoljavajućoj meri međusobno korelisane (Field 2005). Utvrđeno je da je test statistički ...Jana S. Stojković. "Hidrogeohemijska valorizacija esencijalnih mikroelemenata mineralnih voda Srbije" in Универзитет у Београду, Универзитет у Београду, Рударско-геолошки факултет (2013-09-25)
-
Multiple-Criteria Decision-Making in Mine Development Planning
Sanja Bajić (2023)The Borska Reka ore deposit is an experimental location where developed methodologies have been applied. It is the largest ore body within the Bor mining complex, which has been the subject of numerous studies and analyses for more than three decades. The paper focuses on the application of FAHP and the VIKOR method to address ranking of alternatives and select the optimal mining method by means of fuzzy multicriteria optimization.Sanja Bajić. "Multiple-Criteria Decision-Making in Mine Development Planning" in Proceedings of the 5th International Underground Excavations Symposium, 5-6-7 June 2023, Istanbul, Topkapi : Dinç Ofset Mat. Rek. San. ve Tic. Ltd. Şti. (2023)
-
Hazardous substances in karst aquifer waters - one of the results of the operational monitoring of groundwater in Serbia
У циљу оцене стања животне средине и разумевања потенцијалних узрока још раније евидентираног лошег хемијског статуса водног тела подземних вода „Крш–север“, извршенa je хидрогеолошка проспекција шире околине лежишта бакра Мајданпек, која је укључилаистраживање површинског копа, флотационог језера и главних карстних врела и пећина. Имајући у виду да се експлоатационо поље рудника бакра Мајданпек директно граничи са карстном издани и водним телом подземних вода „Крш–север“, параметри квалитета подземне воде су анализирани (in situ и лабораторијски) на два главна карстна врела ...Zoran Stevanović, Veljko Marinović, Branislav Petrović. "Hazardous substances in karst aquifer waters - one of the results of the operational monitoring of groundwater in Serbia" in Geoloski anali Balkanskoga poluostrva (Annales geologiques de la Peninsule balkanique), University of Belgrade, Faculty of Mining and Geology (2020). https://doi.org/10.2298/GABP201107010S
-
Rift sequence stratigraphy and its contribution to source rock understanding – Serbian part of Pannonian Basin
Filip Anđelković, Dejan Radivojević (2018)... part of Pannonian Basin showed that rifting took place along asymmetric simple shear exten- sional mechanism (Matenco and Radivojević, 2012). The analysis of syn-kinematic reflectors demonstrates that normal faulting migrates in time and space and took place on a wide Miocene time interval (roughly ...
... Marine and Petroleum Geology 18, 133–147. Magyar, I., Fogarasi, A., Vakarcs, G., Bukó, L., Tari, G.C. 2006. The largest hydrocarbon field discovered to date in Hungary: Algyő. In: Golonka, J., Picha, F.J. (Eds). The Carpathians and their foreland: geology and hydrocarbon resources, AAPG Memoir 84, 619–632 ...Filip Anđelković, Dejan Radivojević. "Rift sequence stratigraphy and its contribution to source rock understanding – Serbian part of Pannonian Basin" in CBGA, Salzburg, Austria, Septembar 10-13, 2018, Bulgarian Academy of Science (2018)
-
Preparation, synthesis and characterization of nanometric Ca0.9Er0.1MnO3
Tijana B. Vlašković, Bojana Laban, Maja Milošević, Maria Čebela, Vladimir Dodevski, Milena Rosić (2023)... 800-1000 *C for a period of 15 min. The effects of calcination were characterized through different experimental techniques (differential thermal analysis (DTA), X-ray diffraction (KRD), Fourier transform infrared spectroscopy (FTIR), Field emission scanning eclectron microscopy (FESEM), and inductively ...Tijana B. Vlašković, Bojana Laban, Maja Milošević, Maria Čebela, Vladimir Dodevski, Milena Rosić. "Preparation, synthesis and characterization of nanometric Ca0.9Er0.1MnO3" in Programme and Book of abstracts 15th ECerS Conference for Young Scientists in Ceramics, Novi Sad, Serbia October 11-14, 2023 , Novi Sad : Faculty of Technology, University of Novi Sad (2023)
-
Indexing of textual databases based on lexical resources: A case study for Serbian
In this paper we describe an approach to improvement of information retrieval results for large textual databases by pre-indexing documents using bag-of-words and Named Entity Recognition. The approach was applied on a database of geological projects financed by the Republic of Serbia in the last half century. Each document within this database is described by metadata, consisting of several fields such as title, domain, keywords, abstract, geographical location and the like. A bag of words was produced from these ...... archiving of geologic data, and provide a modern and effective in- formation basis for carrying out all activities related to planning, design and decision-making in the field of geology. Within the project a web portal3 was established that allows quick and easy access to geological data and information ...
... been organized on the principle of traditional libraries and archives, where obtaining specific information was difficult or time consum- ing. Usage analysis of the geological investigations results, stored in numerous archives and document libraries, showed that they were inefficiently used be- cause of ...
... lemmatizer based on suffix stripping [5], the same basic idea being used in the stemmer presented in a later paper [11]. The only stemmer available for analysis is the last one since its code is given in the paper. However, although the author claims accuracy of 92% it was evaluated on a very small text (522 ...Ranka Stanković, Cvetana Krstev, Ivan Obradović, Olivera Kitanović. "Indexing of textual databases based on lexical resources: A case study for Serbian" in Semantic Keyword-based Search on Structured Data Sources : First COST Action IC1302 International KEYSTONE Conference, IKC 2015, Coimbra, Portugal, September 8-9, 2015. Revised Selected Papers, Springer (2015). https://doi.org/10.1007/978-3-319-27932-9_15
-
Frequency and Length of Syllables in Serbian
Marija Radojičić, Biljana Lazić, Sebastijan Kaplar, Ranka Stanković, Ivan Obradović, Ján Mačutek, Lívia Leššová (2019)Basic analyses of several properties of syllables (the rank-frequency distribution, the distribution of length, and the relation between length and frequency) in Serbian is presented. The syllabification algorithm used combines the maximum onset principle and the sonority hierarchy. Results indicate that syllables behave similarly to words as far as mathematical models are concerned, but values of parameters in models for syllables are quite different from those for words.... all of them (and also to many other languages). Our data support the hypothesis suggested by Strauss et al. (2008), according to which syllables, as far as models are concerned, behave like words. Syllables in the Serbian text under analysis „mimic“ the behaviour of words with respect to their f ...
... full data can be found at rgf.rs/projekti/bil/sk/results/KakoSeKalioCelik_2019 _01_14.xlsx) can be modelled by one of these distributions as well. Table 2. Rank-frequency distribution of syllables in Serbian rank frequency syllable 1 10103 o 2 6970 je 3 5778 u 4 5291 na 5 5248 da 6 4827 ...
... normalization constant). As several other Poisson-like distributions also fit the data very well, we postpone any attempts to formulate conclusions that could be deduced from the model and parameter values until data for more languages are available. Stretching the analogy between words and syllables ...Marija Radojičić, Biljana Lazić, Sebastijan Kaplar, Ranka Stanković, Ivan Obradović, Ján Mačutek, Lívia Leššová. "Frequency and Length of Syllables in Serbian" in Glottometrics (2019)
-
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
-
Sistem poslovne inteligencije za upravljanje zaštitom na radu u rudarskoj industriji
Ljiljana R. Kolonja (2016-09-23)Postojeća organizacija zaštite na radu na površinskim kopovima uglja često nije umogućnosti da blagovremeno i tačno ukaže na nedostatke, koji mogu u bližoj ilidaljoj budućnosti da budu uzrok narušavanja bezbednosti radnika, ali i uzrokoštećenja materijalnih dobara rudnika. Nemogućnost donošenja pravovremenihodluka je moguće izbeći uvođenjem softverski podržanih sistema za praćenje ianalizu bezbednosti i zaštite na radu.Osnovni cilj ove doktorske disertacije je definisanje metodologije i razvoj modelasistema upravljanja zaštitom na radu, koji će omogućiti savremen, adekvatan isveobuhvatan način praćenja i analize ...... SQL Server 2005 Analysis Services Performance Guide. White Paper, White Paper. 131 WELLS, D. 2003. Ten best practices in business intelligence and data warehousing. Renton, WA: The Data Warehouse Institute. ZINS, C. 2007. Conceptual approaches for defining data, information, and ...
... Records and the analysis of indicators of the state of occupational safety, such as accidents, injuries at work and occupational diseases should enable, with the application of modern information technologies, a complex and comprehensive analysis of collected data, the assessment ...
... Applying UML and patterns: an introduction to object‐oriented analysis and design and iterative development, Pearson Education India. LEI, T. & DING, R.‐J. 2008. Efficiency assessment of coal mine safety input by data envelopment analysis. Journal of China University of Mining and Technology, 18, 88‐92 ...Ljiljana R. Kolonja. "Sistem poslovne inteligencije za upravljanje zaštitom na radu u rudarskoj industriji" in Универзитет у Београду, Универзитет у Београду, Рударско-геолошки факултет (2016-09-23)
-
Cutting Resistance Laboratory Testing Methodology for Underwater Coal Mining
... performed based on available laboratory data for cutting resistance, which was determined by the standard wedge testing procedure that did not include the influence of water pressure at a certain depth at which coal is mined. The bucket-wheel dredger performance analysis so far has recorded a large difference ...
... diagram. According to the presented results of laboratory tests and comparative analysis, the suggested methodology of cut- ting resistance testing for underwater coal mining is a reliable basis for determining the necessary data for bucket-wheel dredge rehabilitation. Author Contributions: Conceptualization ...
... ation, V.Č.; Methodology, V.Č.; Validation, V.R., S.Ð., and F.M.; Formal analysis, V.R.; Investigation, V.Č. and V.R.; Resources, V.Č. and V.R.; Data curation, V.R., S.Ð., and F.M.; Writing—original draft preparation, V.Č.; Writing—review and editing, V.R.; Visualization, S.Ð. and F.M. All authors ...Vladimir Čebašek, Veljko Rupar, Stevan Đenadić, Filip Miletić. "Cutting Resistance Laboratory Testing Methodology for Underwater Coal Mining" in Minerals, MDPI AG (2021). https://doi.org/10.3390/min11060564
-
Upper Miocene depositional environments of the Kikinda-Mokrin High (Serbia)
Saša Ivanišević, Dejan Radivojević (2018)Exploration for oil and gas in mature areas, such as the Pannonian Basin, can benefit from reexamination of old data using more advanced modern workflows that focus on the temporal and spatial aspects of sediment deposition. Specifically, we apply a new environment of deposition model that interprets the Upper Miocene- Pliocene sediments as being deposited in a rapidly filling basin characterized by quick shelf edge progradation from the northwest toward the southeast. Reconstruction of this shelf edge trajectory reveals ...Saša Ivanišević, Dejan Radivojević. "Upper Miocene depositional environments of the Kikinda-Mokrin High (Serbia)" in Interpretation, AAPG SEG (2018). https://doi.org/10.1190/INT-2017-0084.1
-
Енергетска безбедност Европске уније у светлу актуелне енергетске транзиције
Бобан Павловић, Дејан Ивезић (2021)Енергетска стратегија Европске уније, која од 2015. године обухвата и циљеве у области климатских промена, тежи изградњи „енергетске уније” која потрошачима из ЕУ даје сигурну, приступачну, чисту и одрживу енергију. Енергетска политика ЕУ поставља пред себе амбициозне циљеве у погледу коришћења обновљивих извора – учешће од 32% до 2030. године. Овако опсежну и динамичну енергетску транзицију у Европи усложњава хетерогеност националних енергетских система у погледу структуре енергетског микса, нивоа увозне зависности, као и нивоа технолошког, друштвеног и економског ...енергетска безбедност, Европска унија, енергетски показатељи, природни гас, обновљиви извори енергије... х система [m³/дан], Pm – технички капацитет производње (укупни) [m³/дан], 44 Sm – максимални технички капацитет улаза из подземног складишта природног гаса [m³/дан], Im – технички капацитет највећег улаза у транспортни систем [m³/дан]. За гасоводни систем се сматра да је у инфраструктурном ...
... количинама од минимум 90 дана нето увоза или потрошње током најмање 61 дан. Наведене залихе морају бити спремне за употребу у случају кризе [30]. Ове мере су посебно важне због чињенице да европски сектор саобраћаја доминантно (око 94%) зависи од нафте. У ЕУ постоји консензус о томе да развој унутрашњег ...
... чланица ЕУ од најмање 10% до 2020. године [36], како би подстакла чланице ЕУ да повежу своје капацитете за производњу електричне енергије. То значи да би свака држава требало да има инфраструктуру која омогућава да се најмање 10% електричне енергије произведене у њеним електранама преноси преко ...Бобан Павловић, Дејан Ивезић. "Енергетска безбедност Европске уније у светлу актуелне енергетске транзиције" in Безбедносни форум, Евроазијски безбедносни форум, Београд (2021)
-
Simple 2D gravity–density inversion for the modeling of the basin basement: example from the Banat area, Serbia
We have developed a technique to calculate lateral density distribution of the sedimentary basin basement by combining linear gravity–density inversion and 2D forward modeling. The procedure requires gravity anomaly data, depth-to-basement data and density data for the sediments (density–depth distribution). Gravity efect of density variations in the basement was extracted from the total gravity anomaly by removing the joint efect of the sediments with vertical density variations and homogeneous basement of average density contrast (calculated by 2D modeling). Gravity ...Ivana Vasiljević, Snežana Ignjatović, Dragana Đurić. "Simple 2D gravity–density inversion for the modeling of the basin basement: example from the Banat area, Serbia" in Acta Geophysica, Springer (2019). https://doi.org/10.1007/s11600-019-00328-9
-
Српски језик у дигиталном добу -- The Serbian Language in the Digital Age
Duško Vitas, Ljubomir Popović, Cvetana Krstev, Ivan Obradović, Gordana Pavlović-Lažetić, Mladen Stanojević (2012)... knot sea. Да и семогле уочитиовакве грешке, умногим случа- јевима је потрена и анализа контекста. На пример: да ли реч треа да уде написана великим словом у српском језику или не: ‚ Дивио се Ружи. ‚ Дивио се ружи. Да и се ово постигло, могу се користити граматике специфичне за дати језик, што ...
... er ag e M at ur ity Su sta in ab ili ty A da pt ab ili ty Language Technology (Tools, Technologies and Applications) Speech Recognition 2 2 1 1 1 1 0 Speech Synthesis 2 2 4 4 5 5 1 Grammatical analysis 1 1 2,5 2 2 1,5 1,5 Semantic analysis 1 1 1 1,5 1 1 1,5 Language generation 0 0 0 0 0 ...
... сматра да се много може урадити на по- ољшањуквалитета система замашинскопревођење. Изазови оухватају прилагођавање језичких ресурса датом предметном или корисничком домену и укљу- чивање терминолошких аза и преводилачких мемо- рија у постојеће радне процесе. Акције за процењивање омогућавају да се пореде ...Duško Vitas, Ljubomir Popović, Cvetana Krstev, Ivan Obradović, Gordana Pavlović-Lažetić, Mladen Stanojević. "Српски језик у дигиталном добу -- The Serbian Language in the Digital Age" in META-NET White Paper Series, G. Rehm, H. Uszkoreit (eds.), Springer (2012)
-
Sitni, ali bitni: uloga sitnih sisara, herpetofaune i mekušaca u rekonstrukciji pleistocenskih paleosredina
Fosilni ostaci životinja i biljaka imaju važnu ulogu u rekonstrukciji pleistocenskih paleosredina. U ovom radu opisan je značaj tri grupe životinja: sitnih sisara, herpetofaune I mekušaca. Mada je za rekonstrukciju važan sastav čitave asocijacije, nalasci pojedinih vrsta mogu biti dovoljno indikativni da otkriju tip staništa ili klimatske uslove. Posebnu teškoću pri rekonstrukciji paleosredina u Srbiji predstavlja činjenica da klimatske promene na Balkanskom poluostrvu nisu bile tako oštre kao u srednjoj i zapadnoj Evropi, pa ne postoji drastična razlika u ...... važan sastav čitave asocijacije, nalasci pojedinih vrsta mogu biti dovoljno indikativni da otkriju tip staništa ili klimatske uslove. Posebnu teškoću pri rekonstrukciji paleosredina u Srbiji predstavlja činjenica da klimatske promene na Balkanskom poluostrvu nisu bile tako oštre kao u srednjoj i zapadnoj ...
... mekušaca mogu se dobiti ı drugi značajni podaci korisni za rekonstrukciju paleosredina, kao npr. da li je neposredno okruženje bilo šumskog, stepskog ili otvorenog tipa (vlažne livade do stepe), da li su to vrste koje ukazuju na močvarnu, rečnu i Jezersku sredinu ili su u pitanju forme koje su ...
... shells from successive lineages can provide not only information on seasonal climate variations, but also data on global climate changes. Based on the remains of molluscs, other significant data useful for the reconstruction of palaecoenvironments can be obtained, such as whether the immediate e ...Katarina Bogićević, Draženko Nenadić, Dragana Đurić, Mihajlo Jovanović, Aleksandra Savković. "Sitni, ali bitni: uloga sitnih sisara, herpetofaune i mekušaca u rekonstrukciji pleistocenskih paleosredina" in Zbornik sažetaka III Kongresa geologa Bosne i Hercegovine, Neum, 21.-23.09.2023., Ilidža : Udruženje geologa Bosne i Hercegovine (2023)
-
Characterization of Natural Clay from Bogovina (Serbia) and Possible Utilization in Sorption of the Herbicides
... samples from Bogovina (Serbia) were pretreated with 1M NaCl, and then with different concentrations of two organic complexes (HDTMA, PTMA). Chemical analysis of the sample showed that natural montmorillonite from Bogovina (Serbia) was Ca montmorillonite. The whole modification process was monitored ...Lazar Kaluđerović, Zorica Tomić, Rada Đurović-Pejčev, Maja Milošević. "Characterization of Natural Clay from Bogovina (Serbia) and Possible Utilization in Sorption of the Herbicides" in Eurosoil2020, online event 2021, Eurosoil, Frontiers Abstract Book (2021)
-
Strain partitioning around an indenter during oroclinal bending: kinematics of the Circum-Moesian fault system of the Carpatho-Balkanides
Nemanja Krstekanić, Liviu Matenco, Uroš Stojadinović, Ernst Willingshofer, Marinko Toljić, Daan Tamminga (2021)... enter during oroclinal bending by focusing on kinematics and geometry of large-scale faultswithin the Circum-Moesian fault system. Our structural analysis shows that the major strike-slip faults are composed of multi-strandgeometries associated with significant strain partitioning within tens to hundreds ...Nemanja Krstekanić, Liviu Matenco, Uroš Stojadinović, Ernst Willingshofer, Marinko Toljić, Daan Tamminga. "Strain partitioning around an indenter during oroclinal bending: kinematics of the Circum-Moesian fault system of the Carpatho-Balkanides" in EGU General Assembly 2021, Vienna, Austria, 19.-30.4.2021., EGU (2021)
-
Hypogene speleogenesis related to porphyry magmatic intrusions and its influence on subsequent karst evolution in the Peruvian high Andes
Alexander Klimchouk, David Evans, Sasa Milanovic, Cristian Bittencourt, Mauro Sanchez, F. Carlos Aguirre (2022)Alexander Klimchouk, David Evans, Sasa Milanovic, Cristian Bittencourt, Mauro Sanchez, F. Carlos Aguirre. "Hypogene speleogenesis related to porphyry magmatic intrusions and its influence on subsequent karst evolution in the Peruvian high Andes" in Geomorphology, Elsevier BV (2022). https://doi.org/10.1016/j.geomorph.2022.108488
-
Influence of mono- and two-component organic modifiers on determination of lipophilicity of tetradentate Schiff bases
Ispitivani su uticaji primene mono- i dvokomponentnih organskih modifikatora na određivanje lipofilnosti 12 tetradentatnih Šifovih baza metodom reverzno-fazne tankoslojne hromatografije. Osnovni cilj je da se proceni tip interakcije između posmatranih jedinjenja i komponenti primenjenih hromatografskih sistema i uspostavi neki obrazac ponašanja kako bi se lakše izabrala kombinacija organskih modifikatora koji će simulirati interakciju u biološkim sistemima na osnovu činjenica da iste osnovne intermolekularne interakcije su odgovorne za ponašanje supstanci i u biološkom i u hromatografskom sistemu. Primenjeni organski modifikator ...Nikola Stevanović, Aleksandar Mijatović, Aleksandar Lolić, Mario Zlatović, Rada Baošić. "Influence of mono- and two-component organic modifiers on determination of lipophilicity of tetradentate Schiff bases" in Chemical Papers, Springer Science and Business Media LLC (2021). https://doi.org/10.1007/s11696-021-01884-5