Претрага
265 items
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Serbian NER&Beyond: The Archaic and the Modern Intertwinned
U ovom radu predstavljamo srpski književni korpus koji se razvija pod okriljem COST Akcije „Distant Reading for European Literary History” CA16204. Koristeći ovaj korpus romana napisanih pre više od jednog veka, razvili smo i učinili javno dostupnim Sistem za prepoznavanje imenovanih entiteta (NER) obučen da prepozna 7 različitih tipova imenovanih entiteta, sa konvolucionom neuronskom mrežom (CNN), koja ima F1 rezultat od ≈91% na test skupu podataka. Ovaj model je dalje ocenjen na posebnom skupu podataka za evaluaciju. Završavamo poređenje ...... time period were not digitized before, they were not digitized in the proper manner or were not available (Krstev et al., 2019). This preparation procedure involved several steps: selection of novels, retrieval of hard co- pies, scanning, OCR, automatic correction of OCR errors (for which a specialized ...
... indepen- dent evaluation set, dubbed SrpELTeC-eval, containing corrected annotated chapters from three novels that were not included in the trai- ning procedure. Table 4 displays entity distri- bution over SrpELTeC-eval. Named entities are represented by their first letter (e.g. P re- presents PERS). It should ...
... 55 23 23 3 0 2,027 19180 18 13 2 5 0 5 3,928 19121 33 18 14 2 0 0 3,045 Table 4: SrpELTeC-eval NE distribution. We applied the same evaluation procedure for the both recognizers. After running a them on SrpELTeC-eval, we took the strictest ap- proach and differentiated between the following three ...Branislava Šandrih Todorović, Cvetana Krstev, Ranka Stanković, Milica Ikonić Nešić. "Serbian NER&Beyond: The Archaic and the Modern Intertwinned" in Proceedings of the Conference Recent Advances in Natural Language Processing - Deep Learning for Natural Language Processing Methods and Applications, INCOMA Ltd. Shoumen, BULGARIA (2021). https://doi.org/10.26615/978-954-452-072-4_141
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Results of Recent Monitoring Activities on Landslide Umka, Belgrade, Serbia—IPL 181
Biljana Abolmasov, Uroš Đurić, Jovan Popović, Marko Pejić, Mileva Samardžić Petrović, Nenad Brodić (2021)... accurate mul- titemporal and spatial surface products for landslide moni- toring, primarily Digital Elevation Models (DEMs). Assuming the same procedure and same data quality, DEMs can be collected sequentially and compared. Change detec- tion is used to reveal differences of the resulting DEMs, ...
... area (Fig. 3). “Zero” high resolution orthophoto and Digital Elevation Model (DEM) were principal SfM products from each sequence, as the same procedure was repeated in March 2019 and both obtained DEMs were analyzed and compared (DEM2018 vs DEM2019). These two sets of UAV aerial images (2018 and ...
... mode) (Table 1). PC compiled SarPROZ (Perissin 2016) software was used (https://www.sarproz.com) for the preliminary PSInSAR analysis. Standard procedure was applied for the extraction of master and slave images, co-registration, sparse point selection, APS estimation and Multi-temporal analysis of ...Biljana Abolmasov, Uroš Đurić, Jovan Popović, Marko Pejić, Mileva Samardžić Petrović, Nenad Brodić. "Results of Recent Monitoring Activities on Landslide Umka, Belgrade, Serbia—IPL 181" in Understanding and Reducing Landslide Disaster Risk. WLF 2020. ICL Contribution to Landslide Disaster Risk Reduction, Springer, Cham (2021). https://doi.org/10.1007/978-3-030-60196-6_14
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Classification of mining waste landfills according to legislation in Serbia
... very important procedure that can suggest what measures should be taken to prevent failures at landfills. In many countries there is a legal obligation to classify landfills, while Serbia has included this practice in its legislation by adopting the Bylaw on the conditions and procedure for issuing ...
... ljudstvo i značajnost posledica. Iako se procena rizika ne nameće kao obaveza kroz Uredbu, u više navrata se kroz proces klasifikacije sugerišu procedure koje direktno ili indirektno pozivaju na rezultate analize rizika i proračuna proboja nasipa. Primenom klasifikacije na konkretnom primeru flotacijskog ...Dragana Nišić, Uroš Pantelić, Nikoleta Aleksić, Neda Nišić. "Classification of mining waste landfills according to legislation in Serbia" in Tehnika, Centre for Evaluation in Education and Science (CEON/CEES) (2021). https://doi.org/10.5937/tehnika2105575N
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Machine learning based landslide assessment of the Belgrade metropolitan area: Pixel resolution effects and a cross-scaling concept
Improvements of Machine Learning-based landslide prediction models can be made by optimizing scale, customizing training samples to provide sets with the best examples, feature selection, etc. Herein, a novel approach, named Cross-Scaling, is proposed that includes the mixing of training and testing set resolutions. Hypothetically, training on a coarser resolution dataset and testing the model on a finer resolution should help the algorithm to better generalize ambiguous examples of landslide classes and yield fewer over/underestimations in the model. This ...Uroš Đurić, Miloš Marjanović, Zoran Radić, Biljana Abolmasov. " Machine learning based landslide assessment of the Belgrade metropolitan area: Pixel resolution effects and a cross-scaling concept" in Engineering Geology , Elsevier (2019). https://doi.org/10.1016/j.enggeo.2019.05.007
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VENTEX: An Expert System for Mine Ventilation Systems Analysis
Analiza sistema za ventilaciju je komleksan proces, koji bazira na proračunu brojnih parametara, koji se odnose na: stanje mreže, provetrenost, stabilnost sistema, gubitke vazduha, klimatske uslove, gasno stanje, ugroženost od požara i opasne prašine. Navedeni problemi se uspešno rešavaju paketom SimVent, ali potpuno razumevanje i korišćenje dobijenih rezultata zahteva angažovanje iskusnog specijaliste iz oblasti ventilacije. Rešenje je nađeno u kreiranju ekspertnog sistema VENTEX, čija je baza znanja formalizacija ekspertskog znanja iz oblasti ventilacije rudnika. U radu je prikazana metodologija ...... system is a hierarchical structure, the slot values can be filled in on of the three following ways: - through direct input, - by activating a procedure attached to the slot that calculates its value, - by inheriting all properties (and consequently slot values) from a slot at a higher level ...
... Diagonals class is given in /Fig. 5/. The class has a parent class VentNetwork and three slots. Two methods are listed. One is for a numerical procedure (CalculateDelta) calculating the value of the attribute Delta and the other for rules (EstimateVN) evaluating the mine ventilation state. ...Ranka Stanković, Nikola Lilić, Ivan Obradović. "VENTEX: An Expert System for Mine Ventilation Systems Analysis" in YU Info '96 Brezovica, Društvo za informacione sisteme i računarske mreže (1996)
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Аnaliza mogućnosti povećanja nagiba završne kosine površinskog kopa “Podbraćan”
Vladimir Čebašek, Veljko Rupar (2018)Eksploatacijom boksita iz ležišta "Podbraćan" formiran je površinski kop sa maksimalnom visinom zavšne kosine od 280 m. Redovnom kontrolom stabilnosti trenutnog stanja kosina površinskog kopa utvrđeno je da faktor sigurnosti iznosi Fs = 1.71 – 1.85, a što je ukazalo da postoji mogućnost povećanja nagiba kosine. U radu je prikazan postupak analize mogućnosti povećanja nagiba završne kosine površinskog kopa "Podbraćan".Vladimir Čebašek, Veljko Rupar. "Аnaliza mogućnosti povećanja nagiba završne kosine površinskog kopa “Podbraćan”" in Mining and Geology Today, II international symposium, Belgrade, 04 - 05.12.2018., Rudarski institut, Balkanska akademija nauka, Akademija inženjerskih nauka Srbije (2018). https://doi.org/10.25075/SI.2018.17
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Crystal structure of K3EuSi2O7
alkalni silikati elemenata retkih zemalja, kristalna struktura, sinteza metodom fluksa, rendgenska difrakcija na monokristalu... accepted for publication in the Journal of the Serbian Chemical Society but has not yet been subjected to the editing process and publishing procedure applied by the JSCS Editorial Office. Please cite this article as S. Z. Kovač, P. Z. Dabić, A. S. Kremenović, J. Serb. Chem. Soc. (2021) ...
... Table I. OnLin e Fir st CRYSTAL STRUCTURE OF K3EuSi2O7 3 An analytical absorption correction based on indexed crystal faces using the procedure of Clark & Reid19 in combination with an empirical absorption correction using spherical harmonics (implemented in SCALE3 ABSPACK scaling algorithm) ...Sabina Kovač, Predrag Dabić, Aleksandar Kremenović. "Crystal structure of K3EuSi2O7" in Journal of the Serbian Chemical Society, National Library of Serbia (2021). https://doi.org/10.2298/JSC210218026K
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Синтеза, структурне и магнетне особине Ca1-xGdxMnO3 нанопрахова
Milena Rosić (2014-12-05)У оквиру ове докторске тезе, испитиване су оптималне методе за добијањенанопраха – калцијум манганског оксида допираног јонима гадолинијума. Циљистраживања је испитивање одговарајућих прекурсора који су подесни да седобију чисти нано прахови манганита са перовскитском структуром, као имонофазни чврсти раствори са перовскитском структуром. Као подесан методкоришћена је модификована глицин нитратна метода, а од прекурсора нитрати иацетати одговарајућих метала. Модификација глицин нитратне методе се односина делимичну замену нитрата ацетатима, чиме је ублажена бурност реакције.Испитан је различити однос прекурсора, који дају наночестичне ...... густина. Шематски приказ експерименталне процедуре приказан је на слици 11. Докторска дисертација Милена Росић 40 Слика 11. Шематски дијаграм експерименталне процедуре Нитрати и ацетати метала Глицин Хомогенизација ...
... As a suitable method used is a modified glycine nitrate method, a precursor nitrates and acetates of the respective metals. Modification of the procedure was performed by partial replacement of nitrates by acetates, in order to control the burn-up reaction. Examined the relationship of various ...
... precursors, which give nanosized powders have a small loss in reactions. Synthesized four nanopowders using modified glycine nitrate procedure with the following nominal composition: Ca0.95Gd0.05MnO3, Ca0.9Gd0.1MnO3, Ca0.85Gd0.15MnO3 and Ca0.8Gd0.2MnO3. The resulting powders were further calcined ...Milena Rosić. "Синтеза, структурне и магнетне особине Ca1-xGdxMnO3 нанопрахова" in Универзитет у Београду, Универзитет у Београду, Рударско-геолошки факултет (2014-12-05)
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A WordNet Ontology in Improving Searches of Digital Dialect Dictionary
In this paper, we present a method for automatic generation of a digital resource, which connects all indirect synonyms of a dialect term to all indirect synonyms of a corresponding term in the standard language, aiming to improve the search of a digital dialect dictionary. The method uses SWRL rules defined in the Serbian WordNet ontology to identify sets of synonymous words. It also uses e-dictionaries to produce correct lemmas in standard language that users usually employ in searches. ...... verbs of the dialect in the same record. At the same time, we made an automatic procedure to check if there were headwords of a dialect dictionary that were not related to any infinitive after inverting the table. This procedure classifies in- finitives on those who take a part in relations (related) and ...Miljana Mladenović, Ranka Stanković, Cvetana Krstev. "A WordNet Ontology in Improving Searches of Digital Dialect Dictionary" in New Trends in Databases and Information Systems: ADBIS 2017 Short Papers and Workshops - SW4CH (Semantic Web for Cultural Heritage) 767, Springer International Publishing (2017). https://doi.org/10.1007/978-3-319-67162-8_37
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Regional Slope Stability Analysis in Landslide Hazard Assessment Context, North Macedonia Example
Miloš Marjanović, Biljana Abolmasov, Igor Peshevski, James Reeves, Irena Georgievska. "Regional Slope Stability Analysis in Landslide Hazard Assessment Context, North Macedonia Example" in Understanding and Reducing Landslide Disaster Risk, Springer International Publishing (2020). https://doi.org/10.1007/978-3-030-60227-7_29
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A Mathematical Learning Environment Based on Serbian Language Resources
In recent years, in line with ever growing usage of Information technology, the learning environments are changing. The amount of available learning materials in various forms has increased. These new environments demand comprehensive learning systems, which enable management of the learning corpus with special attention paid to relevant lexical resources. In this paper we present the concept of a Mathematical Learning Environment in Serbian (MLES), which is based on a corpus of mathematical materials and various lexical resources, enabling ...... 000 grammatically correct forms were identified, and on the basis of these forms 385 basic canonical forms or lemmas were produced, using the procedure described in (Krstev 2015). Among them 191 attributes (A), 174 nouns (N), and 7 verbs (V), such as the noun “ekstremum” (extreme value), represented ...
... and Practice Radojičić et al. 251 A large number of terms in mathematics, as in other domains, are multiword expressions (MWE). Thus a procedure described in [12] has been used for semi-automatic extraction of MWEs on basis of lexical resources and local grammars developed for Serbian ...Radojičić Marija, Obradović Ivan, Stanković Ranka, Utvić Miloć, Kaplar Sebastijan. "A Mathematical Learning Environment Based on Serbian Language Resources" in Proceedings of the 7th International Scientific Conference Technics and Informatics in Education, Faculty of Technical Sciences, Čačak (2018)
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Quantitative landslide risk assessment in the city of Tuzla
In the climate-changing conditions, geological environment interacts more dramatically with the urban fabric than before. The urbanization is expansive and more aggressive than before, but so are the weather extremes and long-term climate trends. In effect, many processes which can be triggered by either side, nature or engineering, are becoming more pervasive than before, and such is the case with landslides. Dealing and managing landslides requires few crucial steps, starting from collecting data on landslide location and typology – ...... to complete the full scope from landslide inventorying to societal landslide risk quantification. Figure 1. Flow chart of the modeling procedure. The following sequence of techniques and procedures (Fig. 1) was implemented to that end ● Landslide inventorying: compiling long- term landslide ...
... through comprehensive mapping of elements at risk. This raster dataset was nominal, just as in the case of engineering geological units, so the same procedure of its aggregation into dummy variables was followed. Distance to mining sites was calculated to depict disturbed zones, since mining in Tuzla ...Miloš Marjanović, Biljana Abolmasov, Cvjetko Sandić, Miralem Mulać, Petar Begović. "Quantitative landslide risk assessment in the city of Tuzla" in SCG-Xiii International Symposium on Landslides. Cartagena, Colombia- February 22-26, 2021, International Society for Soil Mechanics and Geotechnical Engineering (2021)
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Non-Detonating Chemical Mixture for Non-Invasive Methods of Rock Breaking
Within the Innovation developed several different non-detonating chemical mixtures for non-invasive methods of rock breaking. Laboratory and polygon tests gave the satisfactory results and knowledge enough to start the practical experiments in the field. The basis of this innovation is a theoretical assumption that certain chemical mixtures release a large quantity of gases during combustion. If these gases are found in the enclosed space a growing pressure on the walls of the chamber in which combustion takes place will ...Lazar Kričak, Milanka Negovanović, Nikola Simić, Stefan Milanović. "Non-Detonating Chemical Mixture for Non-Invasive Methods of Rock Breaking" in X International Scientific Congress Innovations 2024, Varna, Bulgaria, 24-27. jun 2024, Scientific Technical Union of Mechanical Engineering "Industry 4.0" (2024)
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Laboratory testing of fly ash
Fly ash is one of the most common waste materials created by burning of coal. It is composed of smaller particles, consisting mainly of aluminosilicate glass, mullite and quartz, which are collected by electrostatic separators (filter) of gaseous products arising from the combustion of coal. This paper presents the pozzolanic properties, mechanical properties, chemical and mineral composition of fly ash obtained in the combustion process in a power plant Nikola Tesla A (PPNT A) with the addition of a ...chemical composition, fly ash, mechanical properties, mineral properties, pozzolanic properties, X-ray diffraction... used and prepared by the procedure of Proctor homogenized samples, with diameter of (D) 100 mm and hight of (h) 200 mm, which satisfied the standard height to diameter ratio of 2:1. The samples were specially prepared in a three-part mold and compacted by Proctor procedure in five layers. All prepared ...
... experiment the cylindrical shape samples were used D = 102 mm with the length (L) 116 mm, and specially prepared in a standard mold by Proctor procedure in three layers. These samples were cured in a wet chamber for 28 days. Indirect tensile strength – Brazilian experiment, was done according to ...Miloš Šešlija, Aleksandra Rosić, Nebojša Radović, Milinko Vasić, Mitar Đogo, Milovan Jotić. "Laboratory testing of fly ash" in Tehnički vijesnik (2016). https://doi.org/10.17559/TV-20150317171035
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Knowledge and Rule-Based Diacritic Restoration in Serbian
In this paper we present a procedure for the restoration of diacritics in Serbian texts written using the degraded Latin alphabet. The procedure relies on the comprehensive lexical resources for Serbian: the morphological electronic dictionaries, the Corpus of Contemporary Serbian and local grammars. Dictionaries are used to identify possible candidates for the restoration, while the dataobtainedfromSrpKorandlocalgrammarsassistsinmakingadecisionbetween several candidates in cases of ambiguity. The evaluation results reveal that,dependingonthetext,accuracyrangesfrom95.03%to99.36%,whilethe precision (average 98.93%) is always higher than the recall (average 94.94%).Cvetana Krstev, Ranka Stanković, Duško Vitas. "Knowledge and Rule-Based Diacritic Restoration in Serbian" in Proceedings of the Third International Conference Computational Linguistics in Bulgaria (CLIB 2018), May 27-29, 2018, Sofia, Bulgaria, Sofia : The Institute for Bulgarian Language Prof. Lyubomir Andreychin, Bulgarian Academy of Sciences (2018): 41-51
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Primena AHP и WoEmetode u proceni podložnosti terena na kliženje za područje opštine Krupanj
Biljana Abolmasov, Jelka Krušić, Katarina Andrejev, Miloš Marjanović, Ranka Stanković, Uroš Đurić (2017)... prostorna distribucija klasa hazarda, odnosno rizika od procesa kliženja. U ve- likom broju primera u literaturi i praksi, za nivo srednje razmere, proceduru procene hazarda nije moguće spro- vesti u potpunosti, te zadovoljavajuće rezultate daje i procena podložnosti terena na kliženje (landslide suscep- ...
... (jednačina 1). wM M i i i n AHP = ∑ = 1 (1) Dodeljivanje težinskih vrednosti pojedinim parame- trima je dvostepen postupak. Kao prvo, procedura zahte- va ukupnu procenu relativnog značaja svakog parametra u odnosu na druge i definisana je ekspertskom procenom. Ukoliko je n broj uzročnika ...Biljana Abolmasov, Jelka Krušić, Katarina Andrejev, Miloš Marjanović, Ranka Stanković, Uroš Đurić . "Primena AHP и WoEmetode u proceni podložnosti terena na kliženje za područje opštine Krupanj" in Izgradnja, Beograd : Udruženje inženjera građevinarstva, geotehnike, arhitekture i urbanista Izgradnja (2017): 239-246
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Low-temperature phase transition and magnetic properties of K3YbSi2O7
Predrag Dabić, Volker Kahlenberg, Biljana Krüger, Marko Rodić, Sabina Kovač, Jovan Blanuša, Zvonko Jagličić, Ljiljana Karanović, Václav Petříček, Aleksandar Kremenović (2021)alkalni silikati elemenata retkih zemalja, fazni prelazi, magnetne karakteristike, razdvajanje kristalnog polja, silikati lantanica... crys- tals were fixed on glass fibres using nail polish as glue. An analytical absorption correction based on indexed crystal faces using the procedure of Clark & Reid (1995) in combination with an empirical absorption correction using spherical harmonics (implemented in SCALE3 ABSPACK scaling ...
... Single crys- tals were fixed on glass fibres using nail polish as glue. An analytical absorption correction based on indexed crystal faces using the procedure of Clark & Reid (1995) in combination with an empirical absorption correction using spherical harmonics (implemented in SCALE3 ABSPACK scaling algorithm) ...
... radiation using a Rigaku Oxford Diffraction Gemini Ultra diffractometer. An analytical absorption correction based on indexed crystal faces using the procedure of Clark & Reid (1995) in combination with an empirical absorption correction using spherical harmonics (implemented in SCALE3 ABSPACK scaling algorithm) ...Predrag Dabić, Volker Kahlenberg, Biljana Krüger, Marko Rodić, Sabina Kovač, Jovan Blanuša, Zvonko Jagličić, Ljiljana Karanović, Václav Petříček, Aleksandar Kremenović. "Low-temperature phase transition and magnetic properties of K3YbSi2O7" in Acta Crystallographica Section B Structural Science, Crystal Engineering and Materials, International Union of Crystallography (IUCr) (2021). https://doi.org/10.1107/S2052520621006077
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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.... se došlo do optimalnog rešenja. Ulazni parametri karakterišu se različitom prirodom (geološki, rudarski, tehnološki, ekonomski, organizacioni, administrativni faktori) i veoma kompleksnim međusobnim interakcijama tj. zavisnošću. U slučaju konvencionalnog pristupa, ovako složen problem zahteva obimne istražne ...
... tipom mineralizacije. Ekonomski uslovi poslovanja vezani su za globalna tržišna kretanja, zbog čega su podložni čestim i značajnim promenama. Administrativna regulativa pogotovo u delu koji se odnosi na ekološke norme, postaje sve restriktivnija. Takođe, ležišta, odnosno prateći rudarski objekti, nalaze ...
... geoloških procesa na analiziranom prostoru, − potrebne investicije za usvojenu rudarsku tehnologiju, koje su takođe određene tržišnim faktorima, − administrativne norme i ograničenja, koji su definisani zakonskim aktima, itd. U tom smislu stručna komponenta rudarskog projekta se u velikoj meri svodi na uspešno ...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.... se došlo do optimalnog rešenja. Ulazni parametri karakterišu se različitom prirodom (geološki, rudarski, tehnološki, ekonomski, organizacioni, administrativni faktori) i veoma kompleksnim međusobnim interakcijama tj. zavisnošću. U slučaju konvencionalnog pristupa, ovako složen problem zahteva obimne istražne ...
... tipom mineralizacije. Ekonomski uslovi poslovanja vezani su za globalna tržišna kretanja, zbog čega su podložni čestim i značajnim promenama. Administrativna regulativa pogotovo u delu koji se odnosi na ekološke norme, postaje sve restriktivnija. Takođe, ležišta, odnosno prateći rudarski objekti, nalaze ...
... geoloških procesa na analiziranom prostoru, − potrebne investicije za usvojenu rudarsku tehnologiju, koje su takođe određene tržišnim faktorima, − administrativne norme i ograničenja, koji su definisani zakonskim aktima, itd. U tom smislu stručna komponenta rudarskog projekta se u velikoj meri svodi na uspešno ...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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Model za optimizaciju graničnog saržaja metala u rudi u funkciji dugoročnog planiranja površinskih kopova
Daniel P. Kržanović (2016-06-14)Optimizacija graničnog sadržaja metala u rudi jedan je od osnovnih koraka u planiranju i dizajniranju površinskih kopova i ima za cilj postizanje maksimalne neto sadašnje vrednosti (NPV). Iz tog razloga, optimizacija graničnog sadržaja i danas je predmet mnogih istraživanja u rudarskoj nauci, sa ciljem rešavanja praktičnih problema u eksploataciji ležišta.Dugoročno planiranje eksploatacije na površinskim kopovima podrazumeva sagledavanje svih relevantih parametara i faktora (geologije rudnog ležišta, tehnologije proizvodnog procesa, kapaciteta otkopavanja i prerade, troškova, cena metala, iskorišćenja i dr) kako ...površinski kop, dugoročno planiranje, optimizacija graničnog sadržaja, maksimizacija neto sadašnje vrednosti (NPV).... Marginalni (minimalni) granični sadržaj (engl. Marginal Breakeven Cutoff Grade) razlikuje se od prelomnog graničnog sadržaja po tome što alocirani administrativni i drugi fiksni i kapitalni troškovi nisu uključeni u sračunavanje neto novčanog toka. Isto tako, ovaj granični sadržaj uzima u obzir samo varijabilne ...
... metala ($/t) rn troškovi metalurške prerade metala ($/t) mn troškovi otkopavanja ($/t) cn troškovi flotacijske prerade ($/t) fn administrativni/fiksni troškovi ($/god). 4.4. Metode optimizacije graničnog sadržaja Optimizacija graničnog sadržaja bila je predmet mnogih istraživanja ...
... ($/t) rn troškovi metalurške prerade metala ($/t) mn troškovi otkopavanja ($/t) cn troškovi flotacijske prerade ($/t) f administrativni/fiksni troškovi ($/god). Izraz u jednačini: (4.11) predstavlja dodatni vremenski trošak, gde je V* optimalna sadašnja vrednost ...Daniel P. Kržanović. "Model za optimizaciju graničnog saržaja metala u rudi u funkciji dugoročnog planiranja površinskih kopova" in Универзитет у Београду, Универзитет у Београду, Рударско-геолошки факултет (2016-06-14)