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Упит dcterms_creator_txt:Aleksandar R. Madžarević

1228 items

  • Long-term planning methodology for improving wood biomass utilization

    Vladimir Vukašinović, Dušan Gordić, Marija Živković, Davor Koncalović, Dubravka Živković (2019)
    The insufficiently developed forest management system is often followed by undeveloped forest resources supply chain and insufficient institutional support. These cause inefficient usage of fuel-wood as well as huge amounts of unused forest residues. In order to achieve optimal and long-term sustainable utilisation of biomass, an original methodology based on the interaction of mathematical optimization and backcasting approach has been developed. Mathematical optimization is used for both generation and consideration of techno-economic parameters of the forest biomass supply chain. ...
    Long-term planning methodology, Forest biomass, MINLP, Backcasting
    ... 2015;147:131e60. [28] Freppaz D, Minciardi R, Robba M, Rovatti M, Sacile R, Taramasso A. Optimizing forest biomass exploitation for energy supply at a regional level. Biomass Bioenergy 2004;26:15e25. [29] Frombo F, Minciardi R, Robba M, Rosso F, Sacile R. Planning woody biomass logistics for energy ...
    ... 2015;147:131—60. [28] Freppaz D, Minciardi R, Robba M, Rovatti M, Sacile R, Taramasso A. Optimizing forest biomass exploitation for energy supply at a regional level. Biomass Bioenergy 2004;26:15—25. [29] Frombo F, Minciardi R, Robba M, Rosso F, Sacile R. Planning woody biomass logistics for energy ...
    ... 7, 11000, Beograd, Serbia a r t i c l e i n f o Article history: Received 8 October 2018 Received in revised form 8 March 2019 Accepted 18 March 2019 Available online 24 March 2019 Keywords: Long-term planning methodology Forest biomass MINLP Backcasting a b s t r a c t The insufficiently developed ...

  • Izbor rotornih bagera za proces revitalizacije: primer rotornih bagera SRs 1200 u rudarskom basenu Kolubara

    Predrag Jovančić, Dragan Ignjatović, Stevan Đenadić, Filip Miletić, Goran Todorović, Dragan Novaković (2020)
    Revitalizacija je proces ili skup tehničkih zahvata na mašini kojim se vrši zamena svih dotrajalih ili oštećenih delova metalne konstrukcije. Sastavni deo procesa revitalizacije je i modernizacija zastarele elektro-mašinske opreme. Principi revitalizacije sasvim sigurno nisu sadržani u okviru redovnog godišnjeg ili dnevnog održavanja. Oni predstavljaju održavanje onih veličina koje su značajne za mašinu kao celinu (u ovom slučaju rotorni bager). U ovom radu su analizirani rotorni bageri oznake SRs 1200. Na površinskim kopovima rudarskog basena Kolubara takvih bagera ima ...
    Rotorni bageri, revitalizacija, SRs1200
    ... ij j i i i i i ij j i i i i x x S w x x x x R w x x − = − − =  −  − =   −   (2) gde je wi - težina kriterijuma. 3. Računanje vrednosti za Qj (kompromisno rešenje). * * ( ) ( ) (1 ) ( ) ( ) j j s s Rj R Q v v s s R R − − − − − −= + − − − (3) gde je: * * min ...
    ... min ; max min ; max j j j j j j j j S S S S R R R R − − = = = = (4) 4. Rangiranje se izvodi sortiranjem alternativa prema merama Rj, Sj i Qj [10]. 14 3.2 Metoda ELECTRE Druga metoda primenjena u radu je ELECTRE metoda čija je osnova usmerena ka rešavanju problema u ...
    ... ij x r x + = =  (5) 2 1 1 , 1 ij ij m i ij x r x − = =         (6) 2. Potom se određuju preferencijske normalizovane matrice vij, nakon čega se definišu skupovi saglasnosti i nesaglasnosti: , 1,2, ..., 1,2, ..., ij j ijv w r i m j ...

  • Multivarijabilni modeli upravljanja u rudarstvu

    Marjan M. Hudej (2014-02-03)
    osetljivost i rizik. Više pobuda generiše ovakvu atribuciju. Prva je, multivarijabilnostambijentalnih uslova i funkcionalna i strukturna složenost rudarskih sistema (čovek -priroda (radna sredina) - mašina – okruženje); Druga se odnosi na ne postojanje opštenaučne saglasnosti oko ocene pogodnosti modela za podršku odlučivanju i upravljanje.Treća, ako bi saglasnost i postojala, nije sigurno da bi raspoloživi modeli, metode i taktike,dale ekvivalentne rezultate za iste rudničke uslove. Četvrta, sistemske nauke još uveknemaju opšte prihvaćen i u praksi primenljiv algoritam izbora najboljeg rešenja ...
    rudarstvo, odlučivanje, upravljanje, model,multivarijabilno, multiatributno, multikriterijumsko

  • Multivarijabilni modeli upravljanja u rudarstvu

    Marjan M. Hudej (2014-02-03)
    osetljivost i rizik. Više pobuda generiše ovakvu atribuciju. Prva je, multivarijabilnostambijentalnih uslova i funkcionalna i strukturna složenost rudarskih sistema (čovek -priroda (radna sredina) - mašina – okruženje); Druga se odnosi na ne postojanje opštenaučne saglasnosti oko ocene pogodnosti modela za podršku odlučivanju i upravljanje.Treća, ako bi saglasnost i postojala, nije sigurno da bi raspoloživi modeli, metode i taktike,dale ekvivalentne rezultate za iste rudničke uslove. Četvrta, sistemske nauke još uveknemaju opšte prihvaćen i u praksi primenljiv algoritam izbora najboljeg rešenja ...
    rudarstvo, odlučivanje, upravljanje, model,multivarijabilno, multiatributno, multikriterijumsko

  • Application of the VIKOR Method for Selecting the Purpose of Recultivated Terrain after the End of Coal Mining

    Radmila Gaćina, Sanja Bajić, Bojan Dimitrijević, Tomislav Šubaranović, Čedomir Beljić, Dragoljub Bajić (2024)
    rekultivacija, ugalj, održivi razvoj, višekriterijumsko odlučivanje, VIKOR

  • Application of the VIKOR Method for Selecting the Purpose of Recultivated Terrain after the End of Coal Mining

    Radmila Gaćina, Sanja Bajić, Bojan Dimitrijević, Tomislav Šubaranović, Čedomir Beljić, Dragoljub Bajić (2024)
    reclamation, coal, sustainable development, multi-criteria decision making, VIKOR method

  • Одређивање резерви нафтног лежишта „Х“ методом материјал баланса

    Александра Петровић (2024)
    Метода материјалног баланса је кључна техника у процени резерви нафте и гаса у лежиштима која омогућава системско прорачунавање доступних резерви. Циљ ове методе је да се прецизно израчунају количине флуида у лежишту на основу доступних PVT података, података о лежишту и производњи. Резултати примене методе материјалног баланса показују да је она ефикасна у пружању кавнтитативних процена, међутим њена тачност зависи од квалитета улазних података. Метода материјалног баланса пружа основу за процену резерви, али може бити подложна грешкама због непрецизности ...
    материјални баланс, прорачун, енергетски режим, притисак, аквифер
    ... ojiHocHMa: F rnpejicraBJba yKyrIIHy IIpoH3BOJMy (bnyu/na: F = No|B, + (R, – R„)B„| + W„B, (4.5) V cnyuajy MBoQaaHor saampeMHMHcKor (pakropa B, jemHauMHa yKyIIHC TIpOH3BO/JUĐe (bnyH/la MO)Ke Ce 3armiCaTH KaO: F = N,|B, + (R, – R«)B„,| + W„,B„ (4.6) E, npeaicrapuba niipepe Ha(Te H pacrBopeHor raca: ...
    ... yYTOKOM 3a sacaheHa nexxumrra ca BOJIČHHM yTOKOM: F = NE, + W. (4.25) FE_ N+ We 4.26 DB B, (4.26) Ine cy: F = N,|B, + (R, – Rs)B,| + W„B„ (4.27) E, = [(B, — B..) + (R« — R„)B,| (4.28) /lujarpaum Ha cumnu 4.7. F/E, y 0yHKuaja W./E tupejicraBba N kao npeceK ca opaHaToM, a noMohy HarH0a ce no0OHJa ...
    ... nexunrra ca raCHOM KaHIOM IJI je: • Henoa3Hara N, no3Hara BeHuHHa racHe Kane, m F = N|E, + mE,| (4.29) Ine cy: F = N,|B, + (R, – R)B,| (4.30) E. = |(B, — B.i) + (Rsi — R„)B,| (4.31) Bg Eg = Bi - 1 (4.32) gi JUijarpaM F y QyHkKmujm E, + Eg nmaje npaBy maHujy Koja Hpona3H KpO3 THIOueTaK KaO ...

  • Prilog poznavanju režima isticanja vrela Gornji Dušnik, (Suva planina)

    Aleksandar Tanasković, Vesna Ristić Vakanjac, Veljko Marinović, Saša Milanović, Dušan Polomčić, Ljiljana Vasić, Branislav Petrović (2024)
    Karstno vrelo Gornji Dušnik nalazi se u istoimenom selu u jugoistočnoj Srbiji, u opštini Gadžin Han. Ovo vrelo drenira zapadne delove Suve planine i kaptirano je za potrebe vodosnabdevanja Gadžinog Hana, kao i sela Gornji i Donji Dušnik. Iako je ovo vrelo kaptirano, sistematska osmatranja isticanja karstnih voda na njemu do sada nisu vršena. U periodu od 1. novembra 1977. do 31. januara 1979. godine, uspostavljen je monitoring na ovom vrelu od strane Geozavoda (merenja vršena sporadično i to ...
    bilans voda, režim isticanja, autokorelacija, kroskorelacija, spektralna analiza, vrelo Gornji Dušnik

  • Correlation Between Dynamic CBR and Compaction and Bearing Capacity of Pavement Foundation Layers

    Milan Bogdanović, Snežana Bogdanović, Dragoslav Rakić, Irena Basarić Ikodinović (2024)
    This paper presents a dynamic California Bearing Ratio (CBRd) device that can be used on a prepared pavement foundation layer to obtain a certain parameter of the tested material in the laboratory and in situ in a direct and fast way. For the selected natural material (gravel), it is shown that the laboratory CBRd can be used to estimate the compaction and bearing capacity, because it correlates well with the parameters of the standard and modifed Proctor compaction tests. ...
    korelacija parametara, donji slojevi saobraćajnica, laboratorijska i terenska ispitivanja, dinamički kalifornijski indeks nosivosti CBRd
    ... TABLE 1 Regression statistics – inde- Dependent variables pendent variable CBR+p, En E Ev Multiple R 0.902730052 0.882476059 0.930206737 R 0.814921546 0.778765959 0.865284574 Adjusted R 0.811065745 0.774154874 0.862478005 Standard error 5.062052668 12.52554984 3.552758725 Observations 50 ...
    ... of CBR, , was successfully predicted using polynomial functions: CBR, (SP)=-0.2216w* +3.8763w" —12.611w+28.471, R* =0.9581, (5) CBR,, (MP)=-0.1547w* +2.5276w" —7.9066w+50.122, R* =0.8999, (4) where w is the water content for sample formation. The correlation between CBR,,,and the dry bulk density ...
    ... describe the relationship between CBR, , and the dry bulk density: CBR,» (SP) = -478050 +277599/0? -536707 , +345539, R? =0.9046, (5) CBR,» (MP) = -7066.6/* +431560? – 87562p, +59092, R =0.8903, (6) where pq is the dry bulk density of the sample in Mg/m*. 30 a % - b 200 - ii D tl/(:· AŠ |=} 180 ...

  • Demise of the Wetterstein Carbonate Platform and onset of the Dachstein Carbonate Platform recorded in deep-water successions of the East Bosnian-Durmitor megaunit (Pliješevina, northern Montenegro, Dinarides)

    Milica Mrdak, Eva Wagerer, Milan Sudar, Nevenka Djerić, Martin Đaković, Hans-Jürgen Gawlick (2024)
    Triassic, Carnica event, clay mineralogy, conodont biostratigraphy, Neo-Tethys

  • Middle Triassic stepwise deepening and stratigraphic condensation associated with Illyrian volcanism in the Durmitor Mountain, Montenegro

    Milica Mrdak, Martin Đaković, Hans-Jürgen Gawlick, Nevenka Đerić, Ioan I. Bucur, Milan Sudar, Mileva Milić, Damjan Čađenović (2024)
    anizijski kat, amoniti, konodonti, Dinaridi, Neotetis
    ... i.org/10.3133/pp995 Feist-Burkhardt S., Gotz A.S., Szulc J., Borkhataria R., Geluk M., Haas J., Hornung ., Jordan P., Kempf O., Michalik J., Nawrocki J., Lutz R., Ricken W., R6hling H.G., Ruffer W., Torok A.& Zuhlke R. 2008: 13. Triassic. In: Mc Cann T. (Ed.): The Geology of Central Europe ...
    ... & Lein R. 1994: Conodont colour alte- ration indices: Palacotemperatures and metamorphism in thc Northern Calcareous Alps – a general view. Geo/logische Rund- schau 83, 660—664. https://doi.org/10.1007/BF01083235 Gawlick H.-J., Frisch W., Hoxha L., Dumitrica P., Krystyn L., Lein R., Missoni ...
    ... Lein R. & Jovanović D. 2016: Triassic radiolarite and carbonate components from thc Jurassic ophiolitic mćlange (Dinaridic Ophiolite Belt). Swiss Journal of Geosciences 109, 473—494. https://doi.org/10.1007/ s00015-016-0232-5 Gawlick H.-J., Sudar M.N., Missoni S., Suzuki H., Lein R. & Jova- ...

  • Elektromagnetska sprega sistema litosfera-atmosfera-jonosfera

    Aleksandra B. Kolarski (2016-08-25)
    Radio talasi vrlo niskih frekvencija VLF (eng. Very Low Frequency) frekventnog opsega od 3 do 30 kHz, koji se prostiru talasovodom Zemlja-jonosfera (50 -90 km) su, kao što je poznato, efikasni i nezamenljivi u osmatranju pojava u niskoj jonosferi, sa tla...
    prostiranje talasa vrlo niskih frekvencija, talasovod Zemlja-jonosfera, globalno električno kolo, atmosfersko električno pražnjenje, kratkotrajne svetlosne pojave

  • The external aggregation Newton's method for solving nonlinear equations and applications

    Marija Paunović, Dejan Ćebić, Nebojša Ralević (2020)
    Њутнов метод, агрегациона функција, ред конвергенције
    ... Axxx(x, y) = Ayyy(y, x). DEFINITION OF THE METHOD AND ANALYSIS OF ITS CONVERGENCE Calculating the real root α of nonlinear equation f (x) = 0, f : I ⊆ R→ R . (1) is a common problem in the field of applied mathematics. The root α is said to be simple if f (α) = 0 and f ′(α) , 0. If f (α) = f ′(α) = ...
    ... (5) we call external aggregation Newton’s method, shortly EANM. The next theorem (see Ralević & Ćebić (2019)) hold. Theorem 5. Let f : I ⊆ R → R where I is an open interval. Assume that f is sufficiently differentiable function in the interval I and f has a simple root α ∈ I. If x0 is sufficiently ...
    ... o(e3 n). In the following Theorem we give the error equation of EANM method in a case when we approximate multiple roots. Theorem 7. Let f : I ⊆ R → R, where I is an open interval. Assume that f is sufficiently differentiable function on the interval I and f has a multiple root of multiplicity k ...

  • Pseudo-linear combination of fuzzy metrics

    Nebojsa M. Ralević, Bratislav D. Iričanin, Dejan Ćebić (2024)
    fazi metrike, filtriranje slika
    ... |O,1| is nondecreasing function, and fuzzy T-metric S(z,y,-): (0,+oo) — [0, 1| is nonincreasing function. XAMPLE 3.1. |[B][18] The mapping t : R+ x R+ — R defined by tay(z,y) = where K > 0, is a fuzzy T-metric with respect to muhltiplication, and sx(z,y) = @%)L_K is a fuzzy S-metric with respect ...
    ... algebraic sum, S(z,y) = 1 – (1 – z)(1 – y) = z + y — zy, dual to T with respect to the standard fuzzy complement. EXAMPLE 3.2. The mapping t: R*+ x R+ — R, p > 0, defined by (z(a? + yP))\? + K t.(z,vy) = p(z,y) max{z,y}}+ K where K > 0, is a fuzzy T-metric with respect to muhltiplication. Specially ...
    ... sum, dual to 7 with respect to standard fuzzy complement. EXAMPLE 3.3. |[5] If (X,d) is a metric space, then the mapping t: X x X x R+ — R defined by t IE" d(r,v)' and its dual (with respect to the standard fuzzy complement) s(z,y,t) = 1 — t(z,y,t) t(z,y,t) = %d%)y) is a fuzzy S-metric with ...

  • Ažuriranje baze podataka prostornog informacionog sistema kapitalnih prostorija rudnika sa podzemnom eksploatacijom

    Milutinović Aleksandar, Ganić Aleksandar, Petrovski Aleksandar, Gajić Grozdana (2011)

  • The Jurassic ophiolitic mélanges in Serbia: a review and new insights

    Nevenka Đerić, Hans-Jürgen Gawlick, Milan Sudar (2024)
    radiolarije, Dinaridi, Tetis, Vardar, trijas-jura
    ... (Vishnevskaya & Djerić, 2009) lo we r m e m b e r #*— — ——SCG 92 Bathonian (Gawlick et al., 2017) — — —— SCG 90 Bathonian (Gawlick et al., 2017) hardground hardground hardground Legend Radiolarite with ophiolitic sandstone intercalations Kr š G r a d a c Fo rm at io n Mass transport ...
    ... accretionary complex, Japan. Island Arc, 16: 173–190. RADOIČIĆ-BRSTINA, R. 1956. Les localities nouvelles du jura ancien dans les Dinarides. Geološki glasnik, 1: 91–-113 (in Serbo-Croatian, French summary). RApmoičić, R., JOVANOVIć, D. & SUDAR, M. 2009. Stratigraphy of the Krš Gradac section ...
    ... Journal of Geosciences, 101: 139-183. SCHMID, S.M., FUGENSCHUH, B., KOUNov, A., MATENCO, L., NIEV- ERGELT, P., OBERHANSLI, R., PLEUGER, ]., SCHEFER, S., SCHUS- TER, R., TOMLJENOVIĆ B., USTASZEWSKI, K. & VAN HINSBERGEN, D.J.J. 2020. Tectonic units of the Alpine collision zone between Eastern ...

  • Концепт расположивости при дефинисању ефикасног одржавања помоћне механизације на површинским коповима

    Radiša D. Đurić (2016-05-30)
    Оцена расположивости представља основну компоненту уинжењерском управљању опремом. Расположивост је свеобухватни концепткоји представља меру употребног квалитета техничких система, који садржичитаву серију парцијалних индикатора који се односе на време у раду ивреме у отказу система као и на његову функционалну погодност. Овадисертација даје структурну анализу парцијалних индикатора као и развојмодела њихове синтезе на ниво расположивости. Поменути подаци имајухибридни карактер (измерени и експертски добијени) и њихова интеграцијаи синтеза је остварена коришћењем фази пропозиције и фази закључивања.Овакав приступ омогућава оцену техничког система ...
    управљање опремом, инжењерство одржавања,расположивост, фази закључивање, прикупљање података, булдозер

  • Heavy metals in lignite and soil of Kostolac-Kovin coal basin, eastern Serbia - comparative analysis with selected cities in Serbia, region, Europe and world

    Bogoljub Vučković, Bojan Dimitrijević (2023)
    The Kostolac-Kovin coal basin with an area of 320 km2, with 5 separate layers of coal and with a total of about 5.7 Bt of geological resources and reserves represents an exceptional potential for coal production in Serbia. The coal resources listed in this way are not fully exploitable, but they represent potential for consideration. In this paper, we deal with the geochemical characteristics of coal seams and perform a comparative analysis of coal affectation on the environment. With ...
    lignite, heavy metals, concentrations
    ... = 35 ppm Kovin 2 / Open Pit Drmno under running |0 Low M High R. Vel ika M or av a OI II Coal Layer Zn avg. = 40 ppm R. Vel ika M or av a |0 Low M High III Coal Layer Zn avg. = 30 ppm |0 Low M High R. Vel ika M or av a ICoalLayer Pb avg. = 40 ppm Kovin 2 Open ...
    ... 4950000- R. Veli 4948000- 4948007. 4946000. 4946000. 75040007500000750800075100007512000751400075160007512000762000076220007524000 4964000. 4964000- |j 4962000. 4962000- 4960000. 4960000. 4958000. 4958000- 4956000. 4956000. 4954000. 4954000- 4952000. 4952000- 4950000. R. Vel 4948000 ...
    ... Open Pit Drmno under running II Coal Layer Pb avg. = 20 ppm , III Coal Layer Pb avg. = 12.5 ppm a _— — _ m ——— R K a ___ _— ___— K r — — — _— ——— E e= | CoalLayer | e= MM CoalLayer | el MM CoalLayer || Cu avg. = 60 ppm m Cu avg. = 45 ppm m —. Cu avg. = 40 ppm m eosod| Open Pit Drmno | ...

  • Geochemical evaluation of dolostone deposits in Montenegro: Implications for potential industrial applications

    Darko Bozovic, Vladimir Simic, Dragan Radulovic, Slobodan Radusinovic, Vesna Matovic, Anja Terzic (2024)
    This study presents a unique model for assessing the dependability of continuous parts of combined systems in open-pit mining through the application of fuzzy logic. Continuous sub-systems as part of the combined system of coal exploitation in surface mines have the basic function of ensuring safe operation, high capacity with high reliability, and low costs. These subsystems are usually part of the thermal power plant’s coal supply system and ensure stable fuel supply. The model integrates various independent partial ...
    примарне сировине, минералогија, физичко-механичка својства, технолошка својства, наука о материјалима

  • Two approaches to compilation of bilingual multi-word terminology lists from lexical resources

    Branislava Šandrih, Cvetana Krstev, Ranka Stanković (2020)
    In this paper, we present two approaches and the implemented system for bilingual terminology extraction that rely on an aligned bilingual domain corpus, a terminology extractor for a target language, and a tool for chunk alignment. The two approaches differ in the way terminology for the source language is obtained: the first relies on an existing domain terminology lexicon, while the second one uses a term extraction tool. For both approaches, four experiments were performed with two parameters being ...
    Linguistics and Language,Software,Artificial Intelligence,Language and Linguistics
    ... consider R and F1 scores as relative since 16 B. Šandrih, C. Krstev and R. Stanković they depend on the source language (English) extraction – the comprehensiveness of LIS-dict and successfulness of Eng-TE. Table 3. The calculation of the set of equivalent pairs, precision P , recall R and F1 score ...
    ... especially † This research was supported by Serbian Ministry of Education and Science under the grants #III 47003 and 178006. 2 B. Šandrih, C. Krstev and R. Stanković for languages that are in need of many Natural Language Processing (NLP) re- sources and tools. Such is the case for Serbian, for which t ...
    ... extraction and alignment, or approached these tasks as optimization problems, or even treated them as classifi- cation tasks. 4 B. Šandrih, C. Krstev and R. Stanković In the final step, we apply a binary classifier on the obtained translation candi- dates, with an aim to determine good and bad translation ...