Претрага

Упит dcterms_subject_txt:MIS 5 to MIS 3

1887 items

  • 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 polynomials

  • Improving Document Retrieval in Large Domain Specific Textual Databases Using Lexical Resources

    Ranka Stanković, Cvetana Krstev, Ivan Obradović, Olivera Kitanović (2017)
    Large collections of textual documents represent an example of big data that requires the solution of three basic problems: the representation of documents, the representation of information needs and the matching of the two representations. This paper outlines the introduction of document indexing as a possible solution to document representation. Documents within a large textual database developed for geological projects in the Republic of Serbia for many years were indexed using methods developed within digital humanities: bag-of-words and named ...
    ... queries in Table 3 using the current system and all indexing methods except tfc tfc, where n = 50 is the number of retrieved documents, P (k) is the precision in the intersection point k, and ∆(k) is the change in the recall from item k − 1 to item k. The comparison of all applied methods for 5 queries for ...
    ... which allows a logged user to evaluate the relevance of retrieved documents after the search has been com- pleted.5 Figure 5 depicts the evaluation panel: when the query and the search Fig. 5. The web panel for evaluation of retrieved documents by different methods. 5 Available at http://geoliss.mre ...
    ... for levels of recall ranging from 5 to 50 for all 55 queries. 5 Conclusion and Future Work The evaluation results show that an improvement has indeed been achieved by introducing document indexing in the system. However, the initial solution, besides being simple to apply, outperformed the improved ...

  • Karst aquifer impact on the formation of surface runoff: case study of the Resava River catchment, Serbia

    Marina Mitrašinović, Vesna Ristić Vakanjac, Veljko Marinović, Saša Milanović, Ljiljana Vasić, Dušan Polomčić (2022)
    The paper compares the flow regimes of the Resava River at the gauging stations of the Manasija Monastery (upper course) and the town of Svilajnac (lower course). The hydrological analysis encompasses a multiyear period of monitoring (1982–2020). The water budget and baseflow index are assessed for the catchment areas monitored by the Svilajnac station (683 km2) and the Manasija Monastery station (358k m2), considering the overall monitoring period and characteristic years. The results indicate that the specific runoff in ...
    hydrogeological characteristics, water regime, water balance, karst aquifer, Resava catchment area
    ... FEJ šoo[ - }ž ŽZO i š E 20 L 10 % j | 5 s t-] 5 Š 5 t |3 5 5 t-i Š k k - - -j |j k_ -i -j -i -i e E SBSBSSBS BBB R B B G B BBB a dii 0 š . a bvu.ž·ižšjžrgozn |—g.s. at Manasija Monastery —-g:5. at Svilajnac |—C-g5. at Manasija Monastery —-g.5. at Svilajnac • 180 . 160 s s o : z a : o ...
    ... associated with red Permian sand- stones and dacites of the Krepoljin-Senj zone. Fa- vorable filtration features are attributable to direct tectonic contacts with limestones. 3. Karst aquifer in the castern, upper part of the catchment, characterized by favorable filtration properties. Groundwater flows ...
    ... volumes for baseflow and direct flow (10% m*), as well as the baseflow indices (BFI). In the select- ed years, the BFI at the Manasija Monastery was 3 to 9% higher, suggesting that the karst massif had considerable dynamic reserves, which recharged the Resava River during dry periods. The year 2001 ...

  • Aлтерације перидотита контролисане карактером флуида на примеру харцбургита Рудника - Серпентинизација или талкизација?

    Стефан Петровић, Наталија Батоћанин (2020)
    У раду су приказани резултати испитивања серпентинисаних харцбургита Брђана (43°58'45.1" СГШ, 20°25'12.6" ИГД) и талкизираних харцбургита откривених у интервалу 429-559.8 m у истражној бушотини 330А/18 (44°07'33.2" СГШ, 20°30'28.5" ИГД) на Руднику. Узорци оба локалитета показују карактеристике резидуалних харцбургита из омотача, односно тектонита; лепидобластичне, бластозрнасте, или порфирокластичне структуре и масивне текстуре. Серпентинисани харцбургити и серпентинити Брђана су изграђени од серпентина, ретких реликата оливина и ортопироксена, акцесорног спинела, и веома ретког секундарног магнезита и магнетита. Најдоминантнији састојак (местимично гради и преко ...
    Рудник, Брђани, харцбургити, серпентинити, талк
    ... are as well as the accessory spinel very rare. According to literature data the mesh-structured serpentine commonly considers to low-temperature lizardite (FAUST & FAHEY, 1962; MOODY, 1976). Low contents of secondary magnetite and magnesite (~ 5%) suggests on small percentage of fayalite component in ...
    ... fluids that were brought most probably by quartzlatite dykes and shallow intrusions. According to coexisting forsterite and talc, the temperature of fluids had to be at least 490°С. The elevated alumina content (>3 a.p.f.u.) in serpentine supports such statement. Are such talcized peridotites indicative ...
    ... opaque accessories are subordinated. Talc is occasionally making up to 50 vol. % of rocks. Fibrous and fan-shaped talc are distributed in bands up to 8 mm thick, which alternate with bands of closely mingled olivine crystals (Fig. 3). Talc is almost of ideal composition (DEER et al., 1971, 1972; Tab ...

  • Geostatički proračuni sanacije klizišta šipovima

    Slobodan Ćorić, Dragoslav Rakić, Dušan Berisavljević (2019)
    U ovom radu su, polazeći od rezultata geotehničkih istraživanja, prikazani geostatički proračuni sanacije klizišta vertikalnim šipovima. Metodologija proračuna je složena, jer podrazumeva interakciju klizišta i stabilizirajućih šipova. Stoga se simultano analiziraju stabilnost klizišta i stabilnost šipova. Prilikom određivanja bočne otpornosti tla oko šipova koristi se metoda Brinč Hansena koja uzima u obzir trodimenzionalne uslove u tlu i može da se primeni u složenim geološkim uslovima koji su česti u Srbiji. Analize stabilnosti klizišta vrše se odgovarajućim metodama granične ravnoteže. ...
    sanacija klizišta, interakcija klizišta i šipa, bočna otpornost šipova, stabilnost klizišta i šipova
    ... / / рИ ти / з0г ___ __ —> 61.4 10 2 е 257 р K / — рИИИ li — 9.91 K 40 — 250 —y 36.8 q ___ 207 с и 5/ —_ — 5.88 20 | ——— — 24,5 — 15? _а ——— "C —— 17.6 / _— —|s e _J ___M00 __ ______„ljaž 2 РЖИ њ 10 — 5 7___ 40.2 / -_'_________-–·—···""—–"·_– — 1,93 ;zi:: zip 00 __ —18.14 r= 5 1 ___ | ...
    ... | _____log? | ) 4»/"_/ К'„' = 0 2а ф = 0% 2 р & a 2 20 0 5 102/B 15 20 2/8 Slika 3. Koeficijent bočnog.pritiska а koji zavisi od kohezije (Brinč Hansen, 1961) Figure 3. Coefficient of lateral pressure which is dependent of cohesion (Brinch-Hansen, 1961) Slika 2. Koeficijent bočnog pritiska ...
    ... KLIZIŠTA s zahtevani faktor sigurnosti Fs (Slika 5). Figure 5. Stabilizing force s = 1.2 – 1.5, zemljotresa Fs = 1.1. horizontalne sile Hp šip u kliznom telu (Slika 6). Figure 6. Calculation of pile stability 298 1 2 pF - F = H (2) 1 1 2 2F e = F e (3) o 0 površine Lb Navfac, 1982; Poulos et al ...

  • Natural two-dimensional pyrophyllite: Nanoscale lubricant, electrical insulator and easily-machinable material

    Borislav Vasić, Radoš Gajić, Ivana Milošević, Žarko Medić, Marina Blagojev, Marko Opačić, Aleksandar Kremenović, Dejan Lazić (2022)
    Pyrophyllite, with the chemical formula Al2Si4O10(OH)2, is a naturally occurring and abundant van der Waals mineral belonging to the group of phyllosilicates. It is very soft, layered crystal used for sculpting and an excellent electrical and thermal insulator aimed for the operation at high pressure and temperature. Here, for the first time, two-dimensional (2D) pyrophyllite obtained by both mechanical and liquid phase exfoliation is presented and investigated at the nanoscale. The layered structure provides low friction coefficient of around ...
    Atomic force microscopy, Insulating properties, Nanofriction and wear, Natural two dimensional materials, Phyllosilicates, Pyrophyllite

  • The Dictionary of the Serbian Academy: from the Text to the Lexical Database

    Ranka Stanković, Rada Stijović, Duško Vitas, Cvetana Krstev, Olga Sabo (2018)
    In this paper we discuss the project of digitization of the Dictionary of the Serbo-Croatian Standard and Vernacular Language. Scanning and character recognition were a particular challenge, since various non-standard character set encoding was used in the course of the almost 60-year long production of the dictionary. The first aim of the project was to formalize the micro-structure of the dictionary articles in order to parse the digitized text of and transform it into structured data stored in relational lexical database. This approach ...
    computer lexicography, lexical database, language resources, dictionary, Serbian language
    ... (and attributes) and LexInfo in order to relate the lexical data to other resources and provide automatic production of the dictionary in different forms and formats. Figure 3 illustrates a part of the database model with a few examples of structured data. 5 Results and discussion The procedure that ...
    ... of work remains to be done. These two tasks need to be synchronized in order to obtain a homogenous work as the final product. Moreover, although the digitization of the Diction- ary is currently lagging, we would like to catch up on the lost time by using up-to-date technology. 3 Model of Lexical ...
    ... ‘pejorative’); 3. related words (lexical entries) – references to other lexical entries (for instance, preferred forms) are introduced after appropriate abbreviations: исп. for испореди ‘compare’; 4. definitions are descriptive or referential (в. for види ‘see’), in rare cases synonyms; 5. definitions ...

  • Approach to operational mine planning: Case study Tamnava West

    Dejan Stevanović, Mirjana Banković, Milica Pešić Georgiadis, Ranka Stanković (2014)
    ... Example mining block divided in 5 mining cuts is shown on the Figure 9b. Three cuts (cut 1, cut 3 and cut 4) have the LCV in prescribed limits (6.700 kJ/kg ± 5%) and they can be considered as coal cuts. Other two cuts (cut 2 and cut 5) are defined as waste. In order to achieve LCV in prescribed ...
    ... and sandstone partings (maximum up to 9 sub-seam plies). The individual plies maintain relatively constant thickness over the strike length, while most of the variation takes place in the inner rock parting material mainly clay (Figure 5). Figure 5. Geological cross - section in Tamnava ...
    ... block (# 20/51) comprises from 5 seams of coal and the same number of waste (clay) seams. LCV significantly varies from seam to sub-seam and average for whole mining block is 5.621 kJ/kg. All this suggest that selective excavation must be conduct in order to achieve desirable LCV within coal ...

  • Refinement of waste phosphogypsum from Prahovo, Serbia: characterization and assessment of application in civil engineering

    Josip Išek, Lazar Kaluđerović, Nikola Vuković, Maja Milošević, Ivana Vukašinović, Zorica Tomić (2020)
    γ-spectrometry, brushite, chukhrovite, phosphogypsum, radionuclides, recrystallization
    ... analysis The SEM analysis revealed a significant increase in the gypsum crystal size after the recrystallization (Fig. 5). Moreover, the z/x axis ratio increased from 1—3 to >5 for raw and recrystallized samples, respectively, producing long-bladed crystals. Stable laboratory conditions (temperature ...
    ... and Eq. (5), respectively (UNSCEAR, 2000): C; c G H„- OR m ) 370 259 4810 _ e m O (5) — 185 259 — 4810 The values of these indices should be <1, to indicate that the radiation hazard is insignificant. Results and discussion Chemical analysis For each sample, three areas of +5 mm? were ...
    ... significantly (Table 5), being three to five times smaller than the maximum values of building materials (Pantelić et al., 2015). According to the y-indices, with limiting values <1, the PG1 and PG2 samples should be rejected as materials for exterior and interior usage (Table 5) and may be used only ...

  • Influence of mono- and two-component organic modifiers on determination of lipophilicity of tetradentate Schiff bases

    Nikola Stevanović, Aleksandar Mijatović, Aleksandar Lolić, Mario Zlatović, Rada Baošić (2021)
    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 ...
    Šifove baze, Lipofilnost, RP-TLC, Organski modifikatori

  • Multi-word Expressions for Abusive Speech Detection in Serbian

    Ranka Stanković, Jelena Mitrović, Danka Jokić, Cvetana Krstev (2020)
    Ovaj rad predstavlja istraživanja na usavršavanju i unapređenju srpske verzije rečnika Hurtlex, višejezičnog leksikona uvredljivih reči. Posebnu pažnju posvećujemo dodavanju izraza sa više reči (polileksemskih jedinica) koji se mogu smatrati uvredljivim, jer su takvi leksički zapisi veoma važni za postizanje dobrih rezultata u mnoštvu zadataka otkrivanja uvredljivog jezika. Srpski morfološki rečnici se koriste kao osnova za čišćenje podataka i stvaranje rečnika. Istaknuta je veza sa drugim leksičkim i semantičkim resursima na srpskom jeziku i predviđena je izgradnja sistema za ...
    uvredljiv govor, govor mržnje, leksički izvori, višejezični leksikon, izrazi sa više reči
    ... occupations 3 5 8 ddf physical disabilities and diversity 2 2 ddp cognitive disabilities and diversity 7 7 14 dmc moral and behavioral defects 4 11 15 is words related to social and economic disadvantage 3 3 or plants 1 1 an animals 26 10 36 asm male genitalia 2 1 3 asf female genitalia 2 1 3 pr words ...
    ... that used a 3-layer classifier, rules, and dictionary of abusive and derogatory terms. They noticed that offensive language was characterized by extreme subjectivity. Hence, they used a combination of term’s offensiveness and subjectivity impact to calculate and assign a weight from 1 to 5 to each entry ...
    ... variations in MWEs (e.g. neka te (mutna) voda nosi ‘let the (muddy) water carry you’, visiti o (koncu / dlaci) ‘to hang on a tread/hair’) 1832 items. The most frequent were, as expected, MWEs with 2 com- ponents (893), followed by MWE with 3 components (464), 4 components (279), 5 components (119) and 77 ...

  • Nelinearno dinamičko modelovanje potresa izazvanih promenom naponskog stanja pri izradi horizontalnih podzemnih prostorija

    Srđan D. Kostić (2013-11-04)
    U ovoj disertaciji, cilj istraživanja bio je određivanje dinamičkih svojstava potresaizazvanih promenom naponskog stanja pri izradi horizontalnih podzemnih prostorija.Analiza potresa izvedena je sa dva aspekta – u prvom delu istraživanja izučavane suvremenske serije oscilovanja tla za vreme potresa, a u drugom delu vršena je analizastabilnosti fenomenološkog Baridž-Knopof modela bloka sa oprugom. Vremenske serijeoscilovanja tla proučavane su primenom postupka analize surogat podataka, kao ikorišćenjem metoda analize nelinearnih vremenskih serija (primena teoreme orazvijanju skalarne vremenske serije). Analiza vremenskih serija izvedena je ...
    potres, naponsko stanje, podzemne prostorije, bifurkacije, vremenskaserija, deterministički haos, stohastičnost, perturbacije, vremensko kašnjenje, jačina trenja
    ... značajan uticaj rudarskih radova na promenu napona duž rasedne površi, u zavisnosti od toga da li rudarski radovi napreduju sa podinskog krila (slika 3-5a) ili sa povlatnog krila raseda (slika 3-5b).   Slika 3-5. Raspored sila duž rasedne površi pri napredovanju rudarskih radova: (a) sa podinskog ...
    ... sever jug i istok- zapad može odbaciti, pošto su samo za 3, odnosno 5 slučajeva (respektivno), surogat nizovi i originalna serija u korelaciji ( 0≈ ). Za vertikalni pravac oscilovanja tla, nulta hipoteza se takođe može odbaciti, s obzirom na to da je prag značajnosti za a u svim slučajevima jednak ...
    ... (krupne strelice na slici 3-12). Stoga, dva fokalna mehanizma (broj 1 i 4 na slici 3-12) ukazuju na to da su potresi u Belčatovu i Šombierki (1981) direktno pod uticajem tektonskog naponskog polja. S druge strane, normalna rasedanja za potrese broj 2 i 3 na slici 3-12, ukazuju na dominantnu ulogu ...

  • Nelinearno dinamičko modelovanje potresa izazvanih promenom naponskog stanja pri izradi horizontalnih podzemnih prostorija

    Srđan D. Kostić (2013-11-04)
    U ovoj disertaciji, cilj istraživanja bio je određivanje dinamičkih svojstava potresaizazvanih promenom naponskog stanja pri izradi horizontalnih podzemnih prostorija.Analiza potresa izvedena je sa dva aspekta – u prvom delu istraživanja izučavane suvremenske serije oscilovanja tla za vreme potresa, a u drugom delu vršena je analizastabilnosti fenomenološkog Baridž-Knopof modela bloka sa oprugom. Vremenske serijeoscilovanja tla proučavane su primenom postupka analize surogat podataka, kao ikorišćenjem metoda analize nelinearnih vremenskih serija (primena teoreme orazvijanju skalarne vremenske serije). Analiza vremenskih serija izvedena je ...
    potres, naponsko stanje, podzemne prostorije, bifurkacije, vremenskaserija, deterministički haos, stohastičnost, perturbacije, vremensko kašnjenje, jačina trenja
    ... značajan uticaj rudarskih radova na promenu napona duž rasedne površi, u zavisnosti od toga da li rudarski radovi napreduju sa podinskog krila (slika 3-5a) ili sa povlatnog krila raseda (slika 3-5b).   Slika 3-5. Raspored sila duž rasedne površi pri napredovanju rudarskih radova: (a) sa podinskog ...
    ... sever jug i istok- zapad može odbaciti, pošto su samo za 3, odnosno 5 slučajeva (respektivno), surogat nizovi i originalna serija u korelaciji ( 0≈ ). Za vertikalni pravac oscilovanja tla, nulta hipoteza se takođe može odbaciti, s obzirom na to da je prag značajnosti za a u svim slučajevima jednak ...
    ... (krupne strelice na slici 3-12). Stoga, dva fokalna mehanizma (broj 1 i 4 na slici 3-12) ukazuju na to da su potresi u Belčatovu i Šombierki (1981) direktno pod uticajem tektonskog naponskog polja. S druge strane, normalna rasedanja za potrese broj 2 i 3 na slici 3-12, ukazuju na dominantnu ulogu ...

  • Primena programa UVSZ pri zaštiti od miniranja

    Suzana Lutovac, Miloš Gligorić, Jelena Majstorović, Luka Crnogorac, Rade Tokalić (2021)
    Primena energije eksploziva tj. miniranje, predstavlja osnovni način eksploatacije čvrstih mineralnih sirovina u rudarstvu. Miniranjem se postižu vrlo povoljni tehnoekonomski pokazatelji, koje nažalost prate i negativni efekti miniranja. U cilju zaštite životne sredine potrebno je za svaku radnu sredinu odrediti jednačinu oscilovanja stenske mase pri miniranju. Ova jednačina definiše promenu brzine oscilovanja stenske mase u zavisnosti od rastojanja, količine eksploziva, uslova izvođenja miniranja i geoloških karakteristika stenske
    Program UVSZ, miniranje, potres, zaštita životne sredine
    ... Lutovac1, Miloš Gligori 2, Jelena Majstorovi 3, Luka Crnogorac4, Rade Tokali 5 1 Univerzitet u Beogradu, Rudarsko-geološki fakultet, suzana.lutovac@rgf.bg.ac.rs 2 Univerzitet u Beogradu, Rudarsko-geološki fakultet, milos.gligoric@rgf.bg.ac.rs 3 Univerzitet u Beogradu, Rudarsko-geološki fakultet ...
    ... instrument S/N 103 Client: ROCK QUARY,, Event number 715 Operation: Miniranje - 1V Date & time Sat 3 Sep 2016.12:31:55 Location: PK ,,Manastiriste— Reg Length 2.884152 s / 0.997 kHz Operator: Vector max (ch 1-3) 1.30 mm/s at 0.046 s Notes: MM-1 [Timescale 0.25 sidiv Channel 1 Channel 2 Channet input ...
    ... itati stvarnu brzinu oscilovanja (vektor max (ch 1-3)). Uzimanjem u obzir maksimalne brzine oscilovanja rezultati su na strani sigurnosti, jer je maksimalna brzina oscilovanja uvek ve a od stvarne, a stvarna je ona koja deluje na objekat. 5. ZAKLJU AK Izvo enje probnih miniranja sa ciljem ...

  • Project BEWARE—Landslide Post-disaster Relief Activities for Local Communities in Serbia

    Biljana Abolmasov, Dobrica Damjanović, Miloš Marjanović, Ranka Stanković, Velizar Nikolić, Sandra Nedeljković, Žarko Petrović (2017)
    ... BEWARE—Landslide Post-disaster Relief … 415 landslides were registered during 5 months of field campaigns according to the harmonized landslide event data sheet (Cruden and VanDine 2013) (Fig. 5). As a support to field campaigns Very High Resolution (Pléiades) and High Resolution (SPOT6 and World- ...
    ... DOI 10.1007/978-3-319-53487-9_48 413 large-scale inventories of May 2014 event and beyond, and used them for the state-of-the-art hazard analysis, potentially leading to development of early-warning system prototype. It was the only way to actually learn from catastrophes, i.e. to prepare better ...
    ... ion Several Work Packages (WP) were posted to realize the project objectives (Fig. 3). WP1—Partner equipping—Objective of WP1 was to techni- cally enable local authority and Civil Protection offices, i.e. their staff, in 27municipalities in Serbia, to perform simple but sufficiently reliable landslide ...

  • Mitigating hydrate formation in onshore gas wells: A case study on optimization techniques and prevention

    Milica Ješić, Bojan Martinović, Stefan Stančić, Miroslav Crnogorac, Dušan Danilović (2023)
    Gas wells, particularly those situated onshore, play a vital role in the global energy sector by supplying a significant portion of natural gas. However, operational challenges, notably gas hydrate formation, pose substantial issues, leading to complications such as flowline blockages and unexpected well shutdowns. Gas hydrates, crystalline structures resembling ice, ...
    Gas Well, Gas Hydrate Formation, Well Modeling, Well Performance Optimization, Choke Position Adjustments, Methanol Injection

  • A multi-criteria approach for assessing the potential of renewable energy sources for electricity generation: Case Serbia

    Boban Pavlović, Dejan Ivezić, Marija Živković (2021)
    When assessing the potential of renewable energy alternatives for electricity generation, it is necessary to implement a multi-perspective approach that includes economic, technical, environmental, and socio-political criteria. For the evaluation of criteria and alternatives, the Fuzzy Analytical Hierarchy Process (FAHP) method is applied. The obtained weights are formed according to the values of energy indicators and expert judgments. The use of a fuzzy numerical value scale for the assessment of expert judgments and energy indicators provides a more sensitive ...
    Proizvodnja električne energije, Obnovljivi izvori energije, Višekriterijumsko odlučivanje, Srbija
    ... importance 1.1–2.5% 2/3, 1, 3/2 2/3, 1, 3/2 Moderate importance 2.6–6.5% 1, 3/2, 2 1/2, 2/3, 1 Strong importance 6..6%–15% 3/2, 2, 5/2 2/5, 1/2, 2/3 Very strong importance 15.1%–30% 2, 5/2, 3 1/3, 2/5, 1/2 Absolute importance More than 30% 5/2, 3, 7/2 2/7, 1/3, 2/5 commonly used to determine group preferences ...
    ... supply refers to the capability of each RES to ensure reliable electricity supply (such as generation and transmission capacity) and to maintain normal customer supply (Groissböck and Gus- mão, 2020). 3. Employment Creation (SC3) - direct employment gener- ated by activity related to renewable energy ...
    ... necessary to find (−1) power of summation ∑n i=1 ∑m j=1 M j gi: ⎡ ⎣ n ∑ i=1 m ∑ j=1 M j gi ⎤ ⎦ −1 = ( 1 Σn j=1ui , 1 Σn j=1mi , 1 Σn j=1li ) (5) Table 4 Global electricity costs in 2018 (IRE, 2019). RES USD/kWh Hydro 0.047 Solar 0.085 Wind 0.056 Biomass 0.062 Fig. 5. Intersection ...

  • Digitalizacija u rudarstvu: Kreiranje sistema za efikasno poslovno izveštavanje

    Stevan Đenadić, Aleksandar Mirković, Veljko Rupar (2024)
    Proces donošenja odluka u oblasti rudarstva i geologije uslovljen je blagovremenim posedovanjem kvalitetnih podataka i informacija. Kompleksnost rudarskih procesa nalaže prikupljanje podataka na dnevnom odnosno na smenskom nivou. Podaci kao takvi bez analitičkog pristupa nisu dovoljni. Kako bi pristup podacima bio brz i efikasan neophodno je posedovanje adekvatnog digitalnog rešenja uz adekvatne centralizovane baze podataka. U ovom radu je dat pregled trenutne pozicije rudarstva sa aspekta digitalne transformacije kao i predlog jednostavnog prototipa u obliku digitalnog sistema za poslovno ...
    rudarstvo, digitalna transformacija, baze podataka
    ... pristupa; Korak 3 — formiranje centralne baze podataka; Korak 4 — formiranje digitalnih radnih naloga; Korak 5 — uskladiti analitiku potrebama rudnika; Korak 6 — vizuelizacija analitike; Korak7 — definisanje sistema izveštavanja. U prvom koraku se mapira čitav poslovni proces rudnika. Tu se prvenstveno ...
    ... u okviru šestog pitanja. Na sedmo pitanje: Ocenifi od 1 do 5 benefite koje bi predloženo rešenje donelo vašoj kompaniji, odgovori su bili: • 5 popunilo je 7 ispitanika što je 63,6%; • 4 popunilo je 3 ispitanika što je 27,3%; • 3 popunilo je l ispitanika što je 9,1%; • ostalih odgovora nije ...
    ... proizvodnim procesima; • „Srednja ocena benefita predloženog prototipa digitalnog rešenja u ovom radu je 4,55 na skali od 1 do 5 (1 – nizak nivo benefita, 5 — visok nivo benefita), te se može zaključiti da je predloženo rešenje primenjivo u praksi; • Predloženo rešenje bi u najvećoj meri doprinclo: p ...

  • Uticaj proširenja nuklearne elektrane “Pakš” (Mađarska) na resurse podzemnih voda u Vojvodini

    Bojan Hajdin, Dušan Polomčić (2016)
    ... reaktora ima- ju vrlo visok nivo radioaktivnosti i visoku temperaturu zbog čega se prvo smeštaju u bazen za hlađenje, gde ostaju 3-5 godina, a najviše 10. Nakon toga se pre- meštaju u “privremeno skladište”, gde prema projektu ostaju do završetka rada NE, 2085. godine. Oba skladišta nalaze se u ...
    ... izradio hidrodina- mički model [3]. U zavisnosti od dužine bunarskog niza, prema rezultatima istraživanja, na obe lokacije moguće je dobiti ukupno do 2 m3/s vode (slika 5). Slika 5 - Bunarski niz na lokacijama Budžak (gore) i Mesarske livade (dole), kod Apatina [3] Prema modelskim ispitivanjima, ...
    ... curenja radioaktivnog materijala i pove- ćane radioaktinosti. U NE “Krško” zabeležena su 3 akcidenta, dok se NE “Kozloduj” (Bugarska) danas sv- rstava u deset najopasnijih nukleranih elektrana u svetu i zabeleženo je 5 vrlo ozbiljnih incidenat uz curenje radioaktivnosti iz NE. Prilikom havarijskih oštećenja ...

  • A comparison between ARIMA, LSTM, ARIMA-LSTM and SSA for cross-border rail freight traffic forecasting: the case of Alpine-Western Balkan Rail Freight Corridor

    Miloš Milenković, Miloš Gligorić, Nebojša Bojović, Zoran Gligorić (2023)
    železnica, prekogranični teretni saobraćaj, ARIMA, LSTM, SSA