Претрага
128 items
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A fuzzy-based decision support model for effectiveness evaluation - a case study of examination of bulldozers
Effectiveness evaluation is one of the basic components of engineering asset management and maintenance engineering in general. Effectiveness is an overall concept representing a measurement of quality of service level for the analyzed engineering system. This concept contains a series of partial indicators relating to time in operation and time for maintenance activities, as well as functional properties of the system. This article describes the analysis and structuring of partial indicators, as well as the development of a model ...Miloš Tanasijević, Predrag Jovančić, Dejan Ivezić, Uglješa Bugarić, Radiša Đurić. "A fuzzy-based decision support model for effectiveness evaluation - a case study of examination of bulldozers" in International Journal of Industrial Engineering: Theory, Applications and Practice (2019)
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A survey of greenhouse gases production in central European lignites
Anna Pytlak, Anna Szafranek-Nakonieczna, Weronika Goraj, Izabela Śnieżyńska, Aleksandra Krążała, Artur Banach, Ivica Ristović, Mirosław Słowakiewicz, Zofia Stępniewska (2021)... sphere of nitrogen). 2.4. Physical and chemical analysis The moisture of the lignites was determined gravimetrically by oven-drying to a constant weight at 105 °C. Reaction (pH), oxidation- reduction potential (Eh) and electrolytic conductivity (EC) were deter- mined using amultifunctional potentiometer ...
... et al., 2010; Piwocki, 1992). The basement of the lignite deposit is represented by marly and sandy limestones (Ciuk, 1991). The lithostratigraphic unit of the Konin coal mine is characteristic of mires, wet forests and fen or shallow water (Widera, 2016b). 2.2.3. Bełchatów (BCB) The Bełchatów coal ...Anna Pytlak, Anna Szafranek-Nakonieczna, Weronika Goraj, Izabela Śnieżyńska, Aleksandra Krążała, Artur Banach, Ivica Ristović, Mirosław Słowakiewicz, Zofia Stępniewska. "A survey of greenhouse gases production in central European lignites" in Science of The Total Environment, Elsevier (2021). https://doi.org/10.1016/j.scitotenv.2021.149551
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Mineral Resources of Serbia: Environmental, Societal and Economic Challenges
... Karst Unit, 4. Pre-Karst and Bosnian Flysch Unit, 5. East Bosnian-Durmitor Thrust Sheet, 6. Dinaric Ophiolitic Belt, 7. Western Vardar Ophioliic Unit, 8. Drina-Ivanjica Thrust Sheet, 9. Jadar-Kopaonik Thrust Sheet, 10. Sava Zone, 11. Eastern Vardar Ophiolitic Unit, 12. Serbo-Macedonian Unit, 13. ...
... compared with conventional linseed oil; ca. 70% by weight vs. ca. 50% by weight (Tarantin, 2009).Linseed has been used as food and in the traditional medicine. Linseed improves the quality of hair, nails, and skin, helps to regulate body weight, lowers cholesterol and blood pressure and prevents ...
... an Unit (as part of the Dacia Mega Unit) overthrust the Vardar zone. The Serbo-Macedonian Unit includes a medium- to high-grade metamorphic Neoproterozoic to Early Paleozoic gneissic basement and sub-greenschist to epidote- amphibolite grade Paleozoic successions. The Serbo-Macedonian Unit, pa ...Vladimir Simić, Rade Jelenković, Dragana Životić. "Mineral Resources of Serbia: Environmental, Societal and Economic Challenges" in Serbia: Current Issues and Challenges in the Areas of Natural Resources, Agriculture and Environment,, Nova Science Publishers, Inc. (2019)
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Photocatalytic Activity of the V2O5 Catalyst toward Selected Pharmaceuticals and Their Mixture: Influence of the Molecular Structure on the Efficiency of the Process
Sanja J. Armaković, Aleksandra Jovanoski Kostić, Andrijana Bilić, Maria M. Savanović, Nataša Tomić, Aleksandar Kremenović, Maja Šćepanović, Mirjana Grujić-Brojčin, Jovana Ćirković, Stevan Armaković (2023)Due to the inability of conventional wastewater treatment procedures to remove organic pharmaceutical pollutants, active pharmaceutical components remain in wastewater and even reach tap water. In terms of pharmaceutical pollutants, the scientific community focuses on -blockers due to their extensive (over)usage and moderately high solubility. In this study, the photocatalytic activity of V2O5 was investigated through the degradation of nadolol (NAD), pindolol (PIN), metoprolol (MET), and their mixture under ultraviolet (UV) irradiation in water. For the preparation of V2O5, facile ...DFT analysis, metoprolol, nadolol, nanomaterial characterization, photocatalysis, pindolol, β-blocker... 44, 936–948. CrossRef] im, K.; Cho, E.; Choi, J.; Kim, H.; Jang, A.; Choi, Y.; Yu, J.-H.; Jung, S. Intermolecular complexation of low-molecular-weight succinoglycans directs solubility enhancement of pindolol. Carbohydr. Polym. 2014, 106, 101—108. [CrossRef] Perlovich, G.; Volkova, T.; Bauer-Brandl ...
... crystalline phase Shcherbinaite, V»Os (PDF card no. 01-072-0433; orthorhom- bic Pmnm space group) could be identified in the sample, Figure 2. Refined unit cell parameter values (a = 11.506 (2), b = 4.3708 (6), c = 3.5627 (4) A,V = 179.17 (4) A9) are in good agreement with reference values reported ...
... with a step of 0.01”, and a data collection speed of 5.1 ?/min. The low background sing}|e crystal silicon sample holder minimizes the background. Unit cell parameters and average crystallite size and lattice strain values were obtained by PDXL2 integrated X-ray powder diffraction software (Version ...Sanja J. Armaković, Aleksandra Jovanoski Kostić, Andrijana Bilić, Maria M. Savanović, Nataša Tomić, Aleksandar Kremenović, Maja Šćepanović, Mirjana Grujić-Brojčin, Jovana Ćirković, Stevan Armaković. "Photocatalytic Activity of the V2O5 Catalyst toward Selected Pharmaceuticals and Their Mixture: Influence of the Molecular Structure on the Efficiency of the Process" in Molecules, MDPI AG (2023). https://doi.org/10.3390/molecules28020655
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Одређивање оптималне производње дубинске пумпе на клипним шипкама
Небојша Савић (2024)Дужи временски период током историје производње нафте, дубинске пумпе на клипним шипкама су први и у многим случајевима једини избор када су у питању механичке методе експлоатације. Правилан одабир сваког појединачног елемента система омогућава оптимизацију која са собом повлачи бенефите у виду повећавања ефикасности и смањења трошкова. Тренутно примењени систем дубинских пумпи на клипним шипкама на лежишту „Н“ обезбеђује стабилну производњу и реализацију годишњих планова производње без већих проблема. У овом раду је приказан начин оптимизације производње дубинским пумпама ...... ag 80% las Fiuid load on pump (N}- dMOp FOMA JPLHE" 032 Fluid Properties Motor & Power Meter Fluid level tvd (m from surface) 15488 | Buoyanirod weight(N) 44136 Pot Rođ Power (KW\- 54 NMNO: 153 , Fo/SKr 201 Water cut 78% Power meter Detent Water sp. gavit: —— 1.011 Elect cost S.O6/KWH fieaukad ...
... „iInput data“ — VnasaHu mojanu npopauyHa KomaMuHHa (pnyuM/j(iA, KapaKTepHcTHKeC (pnyuna, nparHcru Ha TyOHHTy, Ke3HHTy, JUHHaMHUKH HHBO. „Pumping unit“ — OnByje je Ha3HaueHO KOJH THII KauaJbKe Je OJLaOpaH 3a rmpopauyH, JNyxxauHa xoja onaOpanHa 3a ripopauyH H CTpyKTypHa HeypaBHOTe)KCHOCT. 36 ...
... Sinake/double cyl. enoine: 15 HP Mulbcyunder Engine: 15 HP Pumping Unit:UP90 Torque analysis and electricity BALANCED API Size:C-310-202-118 (Unit ID CUSTOM) OMAaTor) ~ · u OMNAG dirtka lataih o r al lhescdLiara -=:aOaia -10 b afbox loa/ j 'Crank rotatvon with well to nqbt: CCW Cyolic loed ...Небојша Савић. Одређивање оптималне производње дубинске пумпе на клипним шипкама, 2024
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Freeze-dried nanocrystal dispersion of novel deuterated pyrazoloquinolinone ligand (DK-I-56-1): Process parameters and lyoprotectant selection through the stability study
Jelena R. Mitrović, Maja Bjelošević Žiberna, Aleksandar Vukadinović, Daniel E. Knutson, Dishary Sharmin, Aleksandar Kremenović, Pegi Ahlin Grabnar, Odon Planinšek, Dominique Lunter, James M. Cook, Miroslav M. Savić, Snežana D. Savić (2023)Recently, nanocrystal dispersions have been considered as a promising formulation strategy to improve the bioavailability of the deuterated pyrazoloquinolinone ligand DK-I-56-1 (7‑methoxy-2-(4‑methoxy-d3-phenyl)-2,5-dihydro-3H-pyrazolo[4,3-c]quinolin-3-one). In the current study, the freeze-drying process (formulation and process parameters) was investigated to improve the storage stability of the previously developed formulation. Different combinations of lyoprotectant (sucrose or trehalose) and bulking agent (mannitol) were varied while formulations were freeze-dried under two conditions (primary drying at -10 or -45 °C). The obtained lyophilizates were characterized in terms ...... of bulking agent allows primary drying above Tg' or CFT. Above this temperature, the amorphous material is not rigid enough to support its own weight, so mechanical support from the crystalline component prevents macroscopic collapse (I. Remmele et al., 2012). In our study, despite the high ...
... According to the XRPD measurements, the position and width of the signals changed in a sample stored for three months, indicating a reduction of the unit cell as well as the dimensions of the sucrose crystallites by about 20% (data not shown). J.R. Mitrović et al. a) 0 50 100 150 200 T S+M 3+2- ...Jelena R. Mitrović, Maja Bjelošević Žiberna, Aleksandar Vukadinović, Daniel E. Knutson, Dishary Sharmin, Aleksandar Kremenović, Pegi Ahlin Grabnar, Odon Planinšek, Dominique Lunter, James M. Cook, Miroslav M. Savić, Snežana D. Savić. "Freeze-dried nanocrystal dispersion of novel deuterated pyrazoloquinolinone ligand (DK-I-56-1): Process parameters and lyoprotectant selection through the stability study" in European Journal of Pharmaceutical Sciences, Elsevier BV (2023). https://doi.org/10.1016/j.ejps.2023.106557
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Characterization of the eastern Suva Planina Mt. karst aquifer (SE Serbia) by time series analysis and stochastic modelling
Earth-Surface Processes,Geology, Pollution, Soil Science, Water Science and Technology, Environmental Chemistry, Global and Planetary ChangeBranislav Petrović, Veljko Marinović, Zoran Stevanović. "Characterization of the eastern Suva Planina Mt. karst aquifer (SE Serbia) by time series analysis and stochastic modelling" in Environmental Earth Sciences, Springer Science and Business Media LLC (2023). https://doi.org/10.1007/s12665-023-10911-5
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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. "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" in Transportation Planning and Technology, Informa UK Limited (2023). https://doi.org/10.1080/03081060.2023.2245389
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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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Uporedna analiza stabilnosti završnih kosina površinskog kopa „Veliki Krivelj“
Mihajlo Topalović (2023)Površinski kop „Veliki Krivelj“ nalazi se u blizina grada Bora i u neposrednoj blizini sela Krivelj. Od 2018. godine je u vlasništvu kineske kompanije „Zijin“ koja ima udeo od 63% vlasništva celokupnog RTB-a Bor. Na površinskom kopu obavlja se masovna eksploatacija rude bakra opremom visokog kapaciteta. Za bušenje se koriste bušilice prečnika od 250 do 310 mm, a za utovar minirane rude i jalovine bageri čija je zapremina kašike 15 m3 i 22 m3. Za površinski kop „Veliki Krivelj“ ...Mihajlo Topalović. Uporedna analiza stabilnosti završnih kosina površinskog kopa „Veliki Krivelj“, 2023
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Proračun recirkulacionih pumpi u postrojenju za odsumporavanje dimnih gasova ,,TENT B"
Tomislav Trpković (2024)Predmet ovog rada baziraće se na proračunu i usvajanju mašinskih instalacija potrebnih za nesmetano funkcionisanje sistema dve međusobno povezane celine Absorber - Pumpna stanica, preko FRP ( Fiberglass Reinforced Plastic) cevovoda kojim se odvija transport suspenzije krečnjaka neophodnog u samom procesu odsumporavanja dimnih gasova. Pored tehničkog opisa same tehnologije koja uključuje tri objekta: Absorber, Pumpna Stanica i cevovod, glavni deo rada odnosiće se na proračun i usvajanje mašinskih instalacija koji uključuju recirkulacione radijalne centrifugalne pumpe i cevovode kojima ...postrojenje za odsumporavanje dimnih gasova, termoelektrana, pumpna stanica, FRP cevovod, Absorber, transport suspenzije gipsa, prirubnica, ventil, potisni cevovod, usisni cevovod... TOLERANCES: -Mechanical wall resin – Isophtalic t: -O/+20% – Liner: - 2 Sintetic veil L: -20/+10 mm -– 2 "E" glass Mat NOTES: – Dimension mm ; Weight in Kg Slika 4.8 Preklop laminacije 49 Konusni spoj između cevi može se popuniti odgovarajućim materijalom. Prvo se proveri da li su krajevi ...Tomislav Trpković. Proračun recirkulacionih pumpi u postrojenju za odsumporavanje dimnih gasova ,,TENT B", 2024
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Integrated Stratigraphy of the Middle–Upper Jurassic of the Krížna Nappe, Tatra Mountains
carbon and oxygen isotopes, radiolarians, calcareous dinoflagellates, radiolarites, Krížna Nappe, West ern Carpathians, Tethys... Allochthon . [__] Palaeogene sedimentary () secton studied Fig. 1. — main overthrusts —— other overthrusts and faults B Bobrowiec Unit S-H Suchy Wierch-Havran Unit <-HC section studied by Polak ef al., 1998 Geological sketch map ofthe Tatra Mountains (after Bac-Moszaszwili ef a/. 1979; Nemčok ...
... Gradzinski ef al., 2004; Jach, 2005; Plašienka, 2012). The formation of horsts (Bobrowiec Unit and the Gladkie Uplazianskie Thrust Slice in the Western Tatra Mountains) and grabens (the Suchy Wierch—-Havran Unit in the High Tatra and Belianske Tatra Mountains) led to distinct facies changes (Guzik ...
... to a new formal unit, the Jasenina Formation (Michalik ef a/., 1990; Grabowski and Pszczotkowski, 2006). Polak ef a/. (1998) redefined the previously recognized Sokolica Radiolarite Formation and Czajakowa Radiolarite Formation and proposed the Ždiar Formation as a new unit, comprising. thce ...Renata Jach, Nevenka Đerić, Špela Goričan, Daniela Reháková. "Integrated Stratigraphy of the Middle–Upper Jurassic of the Krížna Nappe, Tatra Mountains" in Annales Societatis Geologorum Poloniae (2014)
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Upravljanje proizvodnjom nafte – novi alat na bazi fazi logike
... n 4F: Specification for Drilling and Well Servicing Structures, second [3] The Blocks and Drilling Line, Unit 1, Lesson 5, Second Edition, Petroleum Extension [4] The Drill Stem, Unit 1, Lesson 3, Second Edition, Petroleum Extension Service, The [5] Матановић, Д. (2006): Техника израде бушотина ...
... kao i različite varijacija konačnih elemanata u cilju dobijanja boljih razultata. LITERATURA [1] Slavov, S., Konsulova-Bakalova, M.: Optimizing Weight of Housing Elements of Two-stage Reducer bz Using the Topology Management Optimization Capabilities Integrated in SOLIDWORKS: A Case Study, Machines ...
... 102 – 107, 2018. [5] Orme, M., Madera, I., Gschweitl, M., Ferrari, M.: Topology Optimization for Additive Manufacturing as an Enabler for Light Weight Flight Hardware, Designs, 2018. [6] Guan, H., Chen, Y.J., Loo, Y.C., Xie, Y.M., Steven, G.P.: Bridge topology optimization with stress, displacement ...Мирослав Црногорац, Душан Даниловић, Лола Томић. "Upravljanje proizvodnjom nafte – novi alat na bazi fazi logike" in IX Naučno stručni skup Preduzetništvo, inženjerstvo i menadžment Zrenjanin, 24.10.2020. god., Visoka tehnička škola strukovnih studija u Zrenjaninu (2020)
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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 ...... 220 (m). Dobijeni rezultati pozitivno su ocenjeni u industriji platine Južnoafričke Republike. Zhongliang Yue, EXTENSION OF TOPSIS TO DETERMINE WEIGHT OF DECISION MAKER FOR GROUP DECISION MAKING PROBLEMS WITH UNCERTAIN INFORMATION / PROŠIRENJE TOPSIS-a ZA ODREĐIVANJE TEŽINA DODONIOCA ODLUKE U ...
... UPRAVLJANJA U RUDARSTVU Univerzitet u Beogradu, Rudarsko-geološki fakultet 101 119. Zhongliang Yue, Extension of topsis to determine weight of decision maker for group decision making problems with uncertain information, Expert Systems with Applications, Volume 39, Issue 7, 1 June 2012 ...Marjan M. Hudej. "Multivarijabilni modeli upravljanja u rudarstvu" in Универзитет у Београду, Универзитет у Београду, Рударско-геолошки факултет (2014-02-03)
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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 ...... 220 (m). Dobijeni rezultati pozitivno su ocenjeni u industriji platine Južnoafričke Republike. Zhongliang Yue, EXTENSION OF TOPSIS TO DETERMINE WEIGHT OF DECISION MAKER FOR GROUP DECISION MAKING PROBLEMS WITH UNCERTAIN INFORMATION / PROŠIRENJE TOPSIS-a ZA ODREĐIVANJE TEŽINA DODONIOCA ODLUKE U ...
... UPRAVLJANJA U RUDARSTVU Univerzitet u Beogradu, Rudarsko-geološki fakultet 101 119. Zhongliang Yue, Extension of topsis to determine weight of decision maker for group decision making problems with uncertain information, Expert Systems with Applications, Volume 39, Issue 7, 1 June 2012 ...Marjan M. Hudej. "Multivarijabilni modeli upravljanja u rudarstvu" in Универзитет у Београду, Универзитет у Београду, Рударско-геолошки факултет (2014-02-03)
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Prirodno prečišćavanje i stimulisana bioremedijacija podzemnih voda zagađenih naftnim ugljovodonicima
Nenad M. Marić (2016-09-26)Disertacija se konceptualno sastoji iz dva dela kojima je obuhvaćen pasivan (prirodnoprečišćavanje) i aktivan remedijacioni pristup (stimulisana bioremedijacija) kodpodzemnih voda zagađenih naftnim ugljovodonicima.U prvom delu disertacije prikazani su rezultati osmatranja procesa prirodnogprečišćavanja u podzemnim vodama na lokaciji istorijskog zagađenja kerozinom.Tragovi zagađenja naftnim ugljovodonicima pronađeni su 20 godina nakon prosipanjakerozina. Ovo je stvorilo osnovu za proučavanje efekata dugotrajne izloženostipodzemnih voda procesima biodegradacije u terenskim uslovima. Uočeno je da sesnižene koncentracije elektron akceptora (O2, NO3-, SO42-) i povišene koncentracijemetaboličkih produkata biodegradacije ...... Geochimica Cosmochimica Acta 60, 3359–60. 34. Cozzarelli IM, Baedecker MJ, Eganhouse RP, Goerlitz DF (1994) The geochemical evolution of low-molecular-weight organic acids derived from the degradation of petroleum contaminants in groundwater. Geochim. Cosmochim. Acta 58, 863-877. 35. Dalmacija B, Petrović ...Nenad M. Marić. "Prirodno prečišćavanje i stimulisana bioremedijacija podzemnih voda zagađenih naftnim ugljovodonicima" in Универзитет у Београду, Универзитет у Београду, Рударско-геолошки факултет (2016-09-26)
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Model predviđanja potresa od miniranja na površinskim kopovima primenom simulacione metode Monte Karlo i fazi logike
Milanka N. Negovanović (2015-06-30)Modeliranje predviđanja potresa tla od miniranja primenom fazi logike i metode MonteKarlo zasnovano je na podacima dobijenim terenskim merenjima potresa uzrokovanihminiranjem. Promenljive modela definisane su analizom parametara bušenja i miniranjaminskih serija, kao i velosigrama izmerenih potresa od miniranja. Iskorišćene suprednosti fazi logike u implementaciji mnogo većeg broja ulaznih i izlaznih veličina zamodeliranje u odnosu na postojeće empirijske modele. Na osnovu identičnih podataka,dobijen je regresioni model predviđanja potresa, da bi se izvršilo testiranje novogmodela. U cilju povećanja pouzdanosti modela predviđanja, ...model, predviđanje potresa, miniranje, površinski kop, Monte Karlo, fazilogika, regresiona analiza, FFT analiza, spektri odziva, pomeraj pukotina... Operator: Notes: Channel Input Unit Trig level Pk Diff m/s2 Integ µm Frq(zx) Hz 1 Geo mm/s 0.5 0.657 0.132 10.8 12.8 -0.8 0 0.8 Channel Input Unit Trig level Pk Diff m/s2 Integ µm Frq(zx) Hz 2 Geo mm/s 0.5 0.413 0.106 12.3 10.6 -0.8 0 0.8 Channel Input Unit Trig level Pk Diff m/s2 Integ µm Frq(zx) ...
... Operator: Notes: Channel Input Unit Trig level Pk Diff m/s2 Integ µm Frq(zx) Hz 1 Geo mm/s 0.5 0.486 0.114 16.8 19.9 -0.5 0 0.5 Channel Input Unit Trig level Pk Diff m/s2 Integ µm Frq(zx) Hz 2 Geo mm/s 0.5 0.228 0.0958 20.6 22.7 -0.5 0 0.5 Channel Input Unit Trig level Pk Diff m/s2 Integ µm Frq(zx) ...
... Operator: Notes: Channel Input Unit Trig level Pk Diff m/s2 Integ µm Frq(zx) Hz 1 Geo mm/s 0.5 0.672 0.164 12.4 14.2 -0.8 0 0.8 Channel Input Unit Trig level Pk Diff m/s2 Integ µm Frq(zx) Hz 2 Geo mm/s 0.5 0.271 0.0994 17.8 12 -0.8 0 0.8 Channel Input Unit Trig level Pk Diff m/s2 Integ µm Frq(zx) ...Milanka N. Negovanović. "Model predviđanja potresa od miniranja na površinskim kopovima primenom simulacione metode Monte Karlo i fazi logike" in Универзитет у Београду, Универзитет у Београду, Рударско-геолошки факултет (2015-06-30)
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Model predviđanja potresa od miniranja na površinskim kopovima primenom simulacione metode Monte Karlo i fazi logike
Milanka N. Negovanović (2015-06-30)Modeliranje predviđanja potresa tla od miniranja primenom fazi logike i metode MonteKarlo zasnovano je na podacima dobijenim terenskim merenjima potresa uzrokovanihminiranjem. Promenljive modela definisane su analizom parametara bušenja i miniranjaminskih serija, kao i velosigrama izmerenih potresa od miniranja. Iskorišćene suprednosti fazi logike u implementaciji mnogo većeg broja ulaznih i izlaznih veličina zamodeliranje u odnosu na postojeće empirijske modele. Na osnovu identičnih podataka,dobijen je regresioni model predviđanja potresa, da bi se izvršilo testiranje novogmodela. U cilju povećanja pouzdanosti modela predviđanja, ...model, predviđanje potresa, miniranje, površinski kop, Monte Karlo, fazilogika, regresiona analiza, FFT analiza, spektri odziva, pomeraj pukotina... Operator: Notes: Channel Input Unit Trig level Pk Diff m/s2 Integ µm Frq(zx) Hz 1 Geo mm/s 0.5 0.657 0.132 10.8 12.8 -0.8 0 0.8 Channel Input Unit Trig level Pk Diff m/s2 Integ µm Frq(zx) Hz 2 Geo mm/s 0.5 0.413 0.106 12.3 10.6 -0.8 0 0.8 Channel Input Unit Trig level Pk Diff m/s2 Integ µm Frq(zx) ...
... Operator: Notes: Channel Input Unit Trig level Pk Diff m/s2 Integ µm Frq(zx) Hz 1 Geo mm/s 0.5 0.486 0.114 16.8 19.9 -0.5 0 0.5 Channel Input Unit Trig level Pk Diff m/s2 Integ µm Frq(zx) Hz 2 Geo mm/s 0.5 0.228 0.0958 20.6 22.7 -0.5 0 0.5 Channel Input Unit Trig level Pk Diff m/s2 Integ µm Frq(zx) ...
... Operator: Notes: Channel Input Unit Trig level Pk Diff m/s2 Integ µm Frq(zx) Hz 1 Geo mm/s 0.5 0.672 0.164 12.4 14.2 -0.8 0 0.8 Channel Input Unit Trig level Pk Diff m/s2 Integ µm Frq(zx) Hz 2 Geo mm/s 0.5 0.271 0.0994 17.8 12 -0.8 0 0.8 Channel Input Unit Trig level Pk Diff m/s2 Integ µm Frq(zx) ...Milanka N. Negovanović. "Model predviđanja potresa od miniranja na površinskim kopovima primenom simulacione metode Monte Karlo i fazi logike" in Универзитет у Београду, Универзитет у Београду, Рударско-геолошки факултет (2015-06-30)
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Rezultati ispitivanja parametara čvrstoće i dinamičkih svojstava mermera i mogućnost njihove korelacije
Ispitivanja stena kao radne sredine, odnosno materijala sa kojim se gradi, na kome se gradi i u kome se gradi, svojom složenošću zahteva njeno svestrano izučavanje po velikom broju parametara. Zadatak Mehanike stena je da što bolje upozna ponašanje stenske mase i njenu otpornost na dejstvo pritiska, zatezanja i smicanja, kao i dinamičkih svojstava. Poznavanje navedenih parametara i njihova korelacija omogućavaju pouzdaniji izbor parametara za projektovanje danas sve zahtevnijih uslova kako podzemne, tako i površinske eksploatacije. U ovom radu ...mermer, jednoosna čvrstoća na pritisak, čvrstoća na istezanje, brzina longitudinalnih elastičnih talasa, korelacijaJelena Majstorović-Necković, Vladimir Čebašek, Veljko Rupar. "Rezultati ispitivanja parametara čvrstoće i dinamičkih svojstava mermera i mogućnost njihove korelacije" in 11. Međunarodna konferencija “Ugalj i kritični materijali" CCM 2023, Zlatibor, 11-14. oktobar 2023., Beograd : Jugoslovenski komitet za površinsku eksploataciju (2023)
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Hronološki pregled razvoja površinske eksploatacije lignita u Srbiji
U ovom preglednom radu dat je istorijski pregled razvoja površinske eksploatacije lignita na teritoriji Srbije, uz kratak osvrt na geološki nastanak i kvalitet i rezerve uglja, kao i mogućnosti korišćenja za dalju upotrebu. Kolubarski, Kostolački i Kovinski ugljeni baseni lignita u Srbiji, ne računajući Kosovsko-Metohijski i Drenički u sastavu AP Kosovo i Metohija po Rezoluciji 1244 UN, su ležišta najrasprostranjenijeg uglja - lignita u Srbiji koji se eksploatiše od druge polovine 20. veka na velikom broju površinskih kopova ...Bojan Dimitrijević, Radmila Gaćina, Bogoljub Vučković. "Hronološki pregled razvoja površinske eksploatacije lignita u Srbiji" in XI Međunarodna konferencija ugalj i kritični mineral CCM 2023, Zlatibor, 11-14. oktobar 2023., Beograd : Jugoslovenski komitet za površinsku eksploataciju (2023)