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Упит dcterms_subject_txt:key block theory

272 items

  • A comparative study of the molecular and isotopic composition of biomarkers in immature oil shale (Aleksinac deposit, Serbia) and its liquid pyrolysis products (open and closed systems)

    Gordana Gajica, Aleksandra Šajnović, Ksenija Stojanović, Jan Schwarzbauer, Aleksandar Kostić, Branimir Jovančićević (2021)
    The molecular and isotopic composition of biomarkers in initial bitumen isolated from immature (0.41% Rr) oil shale samples (Aleksinac deposit) and liquid products obtained by pyrolysis in open (OS) and closed (CS) systems are studied. The influence of pyrolysis type and variations of kerogen type on biomarkers composition and their isotopic signatures in liquid products is determined. The applicability of pyrolysis type, numerous biomarkers and carbon isotopic compositions (δ13C) of n-alkanes in liquid pyrolysates is established. Pyrolysis experiments were ...
    Uljni šejl, Aleksinac, organska supstanca, otvoreni i zatvoreni sistem pirolize, biomarkeri, izotopski sastav ugljjenika

  • Ефикасност дистрибуције и коришћења природног гаса у домаћинствима

    Dejan Brkić (2010-03-30)
    Природни гас ће се у будућности све више користити као енергент за подмиривање грејних потреба становништва у српским градовима. Стога је потребно изнаћи најповољнији начин употребе природног гаса. Природни гас се може користити за подмирење грејних потреба становништва на два дијаметрално супростављена начина, и то директно, тако што би се гас директно уводио у зграде путем дистрибутивног система за снабдевање гасом и затим сагоревао у гасном котлу којим је сваки стан опремљен (гасни дистрибутивни систем), или индиректно, тако што ...
    prirоdni gаs, distribuciја gаsа,grејаnjе, cеvоvоdi, cеvоvоdnе mrеžе,fаktоr trеnjа pri prоtоku fluidа,urbаnizаm
    ... f  energy, Wood and Charles developed  a  linear  theory  (flow  adjustment) method by  coupling  the  loop  equations with node equations. Convergence characteristics of linear theory are later improved by Wood  and  Rayes.  Modified  linear  theory  solves  directly  for  the  conduits  flow  rates  ...
    ... ском)  234. Reynolds, О. 1894. On the dynamical theory of incompressible viscous fluids and the  determination of the criterion. Proceedings of the Royal Society of London, 56, 40‐45.  (на енглеском)  235. Reynolds, О. 1895. On the dynamical theory of incompressible viscous fluids and the  determi ...
    ...  Khanna, P. 1990. Analysis of looped water  distribution networks. Environmental Software 5(4), 202–6. (на енглеском)   74. Cipra, B. 1996. A new theory of turbulence causes a stir among experts. Science  272(5264), 951. (на енглеском)  75. Clamond, D. 2009. Efficient resolution of the Colebrook equation ...

  • Ефикасност дистрибуције и коришћења природног гаса у домаћинствима

    Dejan Brkić (2010-03-30)
    Природни гас ће се у будућности све више користити као енергент за подмиривање грејних потреба становништва у српским градовима. Стога је потребно изнаћи најповољнији начин употребе природног гаса. Природни гас се може користити за подмирење грејних потреба становништва на два дијаметрално супростављена начина, и то директно, тако што би се гас директно уводио у зграде путем дистрибутивног система за снабдевање гасом и затим сагоревао у гасном котлу којим је сваки стан опремљен (гасни дистрибутивни систем), или индиректно, тако што ...
    prirоdni gаs, distribuciја gаsа,grејаnjе, cеvоvоdi, cеvоvоdnе mrеžе,fаktоr trеnjа pri prоtоku fluidа,urbаnizаm
    ... f  energy, Wood and Charles developed  a  linear  theory  (flow  adjustment) method by  coupling  the  loop  equations with node equations. Convergence characteristics of linear theory are later improved by Wood  and  Rayes.  Modified  linear  theory  solves  directly  for  the  conduits  flow  rates  ...
    ... ском)  234. Reynolds, О. 1894. On the dynamical theory of incompressible viscous fluids and the  determination of the criterion. Proceedings of the Royal Society of London, 56, 40‐45.  (на енглеском)  235. Reynolds, О. 1895. On the dynamical theory of incompressible viscous fluids and the  determi ...
    ...  Khanna, P. 1990. Analysis of looped water  distribution networks. Environmental Software 5(4), 202–6. (на енглеском)   74. Cipra, B. 1996. A new theory of turbulence causes a stir among experts. Science  272(5264), 951. (на енглеском)  75. Clamond, D. 2009. Efficient resolution of the Colebrook equation ...

  • Konstitutivne zavisnosti komunalnog otpada sa deponija u Srbiji

    Dragoslav Rakić (2013-05-10)
    U disertaciji su prikazani rezultati laboratorijskih ispitivanja uzoraka komunalnogotpada dobijeni u aparatima za direktno smicanje i edometarskim aparatima (jedanedometarski aparat konstruisan je za potrebe ove disertacije). Sva ispitivanja su izvršenana veštački pripremljenim uzorcima, uz uvažavanje preporuka koje se odnose nadimenzije korišćenih aparata i veličinu najvećih frakcija u uzorku (EN 1997-2, ASTM2007-a, 2007-b). Za formiranje uzoraka korišćen je komunalni otpad različite starosti,uzet sa dve deponije u Srbiji (Ade Huje u Beogradu i gradske deponije u Novom Sadu).Interpretacija rezultata dobijenih iz ...
    komunalni otpad, deponija, geotehnička klasifikacija, čvrstoća smicanja,deformabilnost, indeks primarne kompresije, indeks sekundarne kompresije, modelisleganja
    ... Canadian Geotechnical Conference Ottawa, Ontario, 371–385. Landva, A.O. & Clark, J.I. (1990). Geotechnics of Waste Fill - Theory and Practice, Geotechnics of Waste Fill – Theory and Practice, ASTM (American Society for Testing and Materials) STP 1070, 86-103. Landva, A.O., Valsangkar, A.J. & Pelkey ...
    ... Journal of geotechnical and Geoenvironment Engineering, ASCE, Vol.129, No.4, 372-378 Mazzucato, N., Simonini, P. & Colombo, S. (1999). Analysis of block slide in a municipal solid waste landfill, Proceedings of the 7th International Waste Management and Landfill Symposium, Sardinia ’99, S. Margherita ...
    ... Wiley & Sons Ltd. 65-86. Coduto, D. & Huitric, R. (1990). Monitoring landfill movements using precise instruments, Geotechnics of Waste Fills - Theory and Practice, ASTM STP 1070, 358- 370. Coumoulos, D.G., Koryalos, T.P., Metaxas, I.L., & Gioka, D.A. (1995). Geotechnical Investigation at the ...

  • Konstitutivne zavisnosti komunalnog otpada sa deponija u Srbiji

    Dragoslav Rakić (2013-05-10)
    U disertaciji su prikazani rezultati laboratorijskih ispitivanja uzoraka komunalnogotpada dobijeni u aparatima za direktno smicanje i edometarskim aparatima (jedanedometarski aparat konstruisan je za potrebe ove disertacije). Sva ispitivanja su izvršenana veštački pripremljenim uzorcima, uz uvažavanje preporuka koje se odnose nadimenzije korišćenih aparata i veličinu najvećih frakcija u uzorku (EN 1997-2, ASTM2007-a, 2007-b). Za formiranje uzoraka korišćen je komunalni otpad različite starosti,uzet sa dve deponije u Srbiji (Ade Huje u Beogradu i gradske deponije u Novom Sadu).Interpretacija rezultata dobijenih iz ...
    komunalni otpad, deponija, geotehnička klasifikacija, čvrstoća smicanja,deformabilnost, indeks primarne kompresije, indeks sekundarne kompresije, modelisleganja
    ... Canadian Geotechnical Conference Ottawa, Ontario, 371–385. Landva, A.O. & Clark, J.I. (1990). Geotechnics of Waste Fill - Theory and Practice, Geotechnics of Waste Fill – Theory and Practice, ASTM (American Society for Testing and Materials) STP 1070, 86-103. Landva, A.O., Valsangkar, A.J. & Pelkey ...
    ... Journal of geotechnical and Geoenvironment Engineering, ASCE, Vol.129, No.4, 372-378 Mazzucato, N., Simonini, P. & Colombo, S. (1999). Analysis of block slide in a municipal solid waste landfill, Proceedings of the 7th International Waste Management and Landfill Symposium, Sardinia ’99, S. Margherita ...
    ... Wiley & Sons Ltd. 65-86. Coduto, D. & Huitric, R. (1990). Monitoring landfill movements using precise instruments, Geotechnics of Waste Fills - Theory and Practice, ASTM STP 1070, 358- 370. Coumoulos, D.G., Koryalos, T.P., Metaxas, I.L., & Gioka, D.A. (1995). Geotechnical Investigation at the ...

  • Geochemical characterization of sediments from the archaeological site Vinča – Belo Brdo, Serbia

    Gorica Veselinović, Dragana Životić, Kristina Penezić, Milica Kašanin-Grubin, Nevenka Mijatović, Jovana Malbašić, Aleksandra Šajnović (2020)
    Earth-Surface Processes

  • Investigating distant effects of the Moesian promontory: Brittle tectonics along the western boundary of the Getic unit (East Serbia)

    Ana Mladenović, Milorad D. Antić, Branislav Trivić, Vladica Cvetković (2019)
    In this study, we report evidence for brittle deformation in a part of the Carpatho–Balkan orogen, which is explained in terms of effects of the rigid Moesian promontory of the European plate on fault kinematics in East Serbia. We focus on the westernmost part of the Getic Unit of the East Serbian Carpatho–Balkanides, i.e. the Gornjak–Ravanica Unit, located between two main thrusts that were repeatedly activated from Early Cretaceous to recent times. We combine a new data set on ...
    Getikum, Mezijska jedinica, Karpato-balkanski orogen, krte deformacije, Gornjačko-ravanička jedinica

  • Using Lexical Resources for Irony and Sarcasm Classification

    Miljana Mladenović, Cvetana Krstev, Jelena Mitrović, Ranka Stanković (2017)
    The paper presents a language dependent model for classification of statements into ironic and non-ironic. The model uses various language resources: morphological dictionaries, sentiment lexicon, lexicon of markers and a WordNet based ontology. This approach uses various features: antonymous pairs obtained using the reasoning rules over the Serbian WordNet ontology (R), antonymous pairs in which one member has positive sentiment polarity (PPR), polarity of positive sentiment words (PSP), ordered sequence of sentiment tags (OSA), Part-of-Speech tags of words (POS) ...
    ... and Science under the grants #III 47003 and 178003. REFERENCES [1] Salvatore Attardo. 2000. Irony markers and functions: Towards a goal-oriented theory of irony and its processing. Rask International Tidsskrift for Sprog og Kommunication 12, 1 (2000), 3–20. [2] Francesco Barbieri, Francesco Ronzano ...

  • Spatial assessment of the areas sensitive to degradation in the rural area of the municipality Čukarica

    Natalija Momirović, Ratko Kadović, Veljko Perović, Miloš Marjanović, Aleksandar Baumgertel (2019)
    Nature and Landscape Conservation, Soil Science, Agronomy and Crop Science, Water Science and Technology

  • SrpELTeC: A Serbian Literary Corpus for Distant Reading

    Ranka Stanković, Cvetana Krstev, Duško Vitas (2024)
    U članku je predstavljen SrpELTeC, korpus razvijen u okviru akcije COST Distant Reading for European Literary History (CA16204). Svi romani u SrpELTeC-u su odabrani, pripremljeni i obeleženi korišćenjem zajedničkih principa uspostavljenih za sve jezičke zbirke u Evropskoj zbirci književnog teksta (ELTeC). Navedeni su izazovi i rešenja u pripremi SrpELTeC od nule. Svi romani su ručno kodirani u TEI sa bogatim metapodacima i strukturnim napomenama. Automatska anotacija je uključivala POS-označavanje, lematizaciju i imenovane entitete, oslanjajući se na resurse za obradu ...
    digital humanities, Serbian literature, text corpora, distant reading , linked data, named entity recognition, text analytics

  • Споменица 1991. – 2015. година: 135 година геологије и 70 година рударства на Универзитету у Београду

    главни и одговорни уредник Душан Поломчић (2016)
    Рударско-геолошки факултет
    ... Environmental Earth Sciences, 2014. 313. Ivić A.: The mean value of the Riemann zeta-function on the critical line, Analytic Number Theory, Approximation Theory, and Special Functions, 2014. 314. Borojević-Šoštarić S., Palinkaš L., Neubauer F., Cvetković V., Bernroider M., Genser J.: The origin ...
    ... (1), pp. 24–32. IGNJATOVIĆ, D., PETROVIĆ, B., JOVANČIĆ, P., BOŠKOVIĆ, S., 2015: Impact of the Bucket Wheel Support at Technical Parameters of the Block and Bucket Wheel Excavator Capacity. Proceedings of the 12th International Symposium Continuous Surface Mining, Aachen 2014, str. 73–81. Уџбеници ...
    ... ground vibrations induced by blasting. PLoS One 8, е82056. KOSTIĆ S., VASOVIĆ N., FRANOVIĆ I., TODOROVIĆ K., 2013: Complex dynamics of spring-block earthquake model under periodic parameter perturbations. Journal of Computational and Nonlinear Dynamics, 9, 031019. 4. СПИСАК ИЗАБРАНИХ НАУЧНИХ ...

  • Surface functional groups and degree of carbonization of selected chars from different processes and feedstock

    Marija Ilić, Franz-Hubert Haegel, Aleksandar Lolić, Zoran Nedić, Tomislav Tosti, Ivana Sredović Ignjatović, Andreas Linden, Nicolai D. Jablonowski, Heinrich Hartmann (2022)
    The knowledge ofthe structural and chemical properties of biochars is decisive for their application as technical products. For this reason, methods for the characterization of biochars that are generally applicable and allow quality control are highly desired. Several methods that have shown potential in other studies were used to investigate two activated carbons and seven biochars from different processes and feedstock. The chars were chosen to cover a wide range of chemical composition and structural properties as a hardness ...
    Biougalj, različiti procesi dobijanja, različite sirovine, površinski aktivne grupe, x-ray, FT-IR,XPS
    ... reaction temperature but still higher values than biochars made by fast pyrolysis. The latter are known to contain large amount oftar which can block the entrance to small pores [28,74]. Chemical analysis Data for the mass fraction X of the main elements related to the mass of the incinerated ...
    ... except PW700g show a higher H/C and a lower O/C ratio than expected for the loss of water from formal car- bohydrate (CH»O), the elementary building block of plant biomass, as represented by the 2.0 w= chars — — – line C, -e to CH»5WO pure —— linear fit H/ C OIC Fig 2. Van-Krevelen diagram ...
    ... feedstock, the variance of the resulting biochars is still far from being understood. Charring temperature, heating rate and feedstock selection are key factors for the properties of biochars [47]. It was found that during the process of carbonization, the type of char changes over sev- eral steps ...

  • SASA Dictionary as the Gold Standard for Good Dictionary Examples for Serbian

    Ranka Stanković, Branislava Šandrih, Rada Stijović, Cvetana Krstev, Duško Vitas, Aleksandra Marković (2019)
    У овом раду представљамо модел за избор добрих примера за речник српског језика и развој иницијалних компоненти модела. Метода која се користи заснива се на детаљној анализи различитих лексичких и синтактичких карактеристика у корпусу састављених од примера из пет дигитализованих свезака речника САНУ. Почетни скуп функција био је инспирисан сличним приступом и за друге језике. Дистрибуција карактеристика примера из овог корпуса упоређује се са карактеристиком дистрибуције узорака реченица ексцерпираних из корпуса који садрже различите текстове. Анализа је показала да ...
    Српски, добри примери из речника, аутоматизација израде речника, издвајање својстава, Машинско учење
    ... is used. The four percentiles were computed for different key values, but final results will be deduced after a broader evaluation campaign, with parallel evaluation and adequate interrater agreement. For the greylist function only two key values are used (5th and 95th percentiles): values lower of ...
    ... word behaves, but not all of it is relevant for the description of a word’s behaviour. The concept of lexicographic relevance is based on Fillmore’s theory of frame semantics. The idea behind the concept is that a proper way to describe a word means that all the constructions it participates in should ...
    ... role of dictionary examples Dictionary examples play an important role in dictionary entries and they constitute, according to some authors, a “key microstructural element” of a dictionary (Kosem, 2017: 183). A good example is valuable from the aspects of both language reception and production ...

  • Development of an integrated model for open-pit-mine discontinuous haulage system optimization

    Miodrag Čelebić, Dragoljub Bajić, Sanja Bajić, Mirjana Banković, Duško Torbica, Aleksej Milošević , Dejan Stevanović (2024)
    equipment selection, mine mechanization, expert judgment, linguistic variables, MCDM, FAHP

  • Mapping and classifying large deformation from digital imagery: application to analogue models of lithosphere deformation

    Taco Broerse, Nemanja Krstekanić, Cor Kasbergen, Ernst Willingshofer (2021)
    kontinentalna tektonika: kompresija, kontinentalna tektonika: ekstenzija, kontinentalna tektonika: transkurentni i transformni rasedi, pukotine, rasedi, zone snažnih deformacija, kinematika deformacija kore i omotača, teorijska mehanika, modelovanje
    ... autocorrelation methods. Key words: Continental tectonics: compressional; Continental tectonics: extensional; Con- tinental tectonics: strike-slip and transform; Fractures, faults, and high strain deformation zones; Kinematics of crustal and mantle deformation; Mechanics, theory, and modelling. 1 I N ...
    ... image velocimetry (PIV) and photogrammetry, Geotechnique, 53(7), 619–631. Willingshofer, E. & Sokoutis, D., 2009. Decoupling along plate boundaries: Key variable controlling the mode of deformation and the geometry of collisional mountain belts, Geology, 37(1), 39–42. Willingshofer, E., Sokoutis, D ...

  • Multihazard Exposure Assessment on the Valjevo City Road Network

    Miloš Marjanović, Biljana Abolmasov, Svetozar Milenković, Uroš Đurić, Jelka Krušić, Mileva Samardžić Petrović (2019)
    Prirodni hazardi, izloženost, klizišta, poplave, bujice, GIS, R

  • Optimizacija dužine strele rotornih bagera u funkciji stabilnosti kosina i efektivnosti rada na površinskim kopovima lignita Srbije

    Branko M. Petrović (2016-07-12)
    Rotorni bageri su mašine koje se u današnje vreme najviše primenjuju uprocesu masovne eksploatacije uglja zahvaljujući, pre svega, nizu tehničkoeksploatacionihprednosti u odnosu na druge vrste bagera. Raznovrsnirudarsko-tehnički zahtevi otkopavanja doprineli su razvoju nekoliko tipova ovihmašina, tako da svaki od njih ima svoje prednosti i nedostatke u odnosu nadrugi tip.Predmet istraživanja u disertaciji odnosi se na izbor optimalnekonstrukcije strele bagera i njene usaglašenosti sa uslovima radne sredine kojiće vladati na površinskim kopovima lignita Srbije, imajući u vidu složene usloveeksploatacije (velika ...
    površinski kop, parametri bloka, kapacitet, rotorni bager, strelabagera, geomehanika, stabilnost kosina, ekonomija
    ... geometry of the mine, i.e. its required heights and angle of inclination, with better economic and environmental effects. Keywords: open pit, block parameters, capacity, bucket wheel excavator, excavators boom length, geomechanics, slope stability, economy, Scientific field: Mining Engineering ...
    ... London, 2015. [19.] Ignjatović D., Petrović B., Jovančić P., Bošković S.; IMPACT OF THE BUCKET WHEEL SUPPORT AT TECHNICAL PARAMETERS OF THE BLOCK AND BUCKET WHEEL EXCAVATOR CAPACITY, Proceedings of the 12th international symposium continuous surface mining-Aachen 2014., 73-81, Aachen, 2015 ...

  • An Approach to Efficient Processing of Multi-Word Units

    Cvetana Krstev, Ivan Obradović, Ranka Stanković, Duško Vitas (2013)
    Efficient processing of Multi-Word Units in the course of development of morphological MWU dictionaries is not easy to achieve, especially when languages with complex morphological structures are concerned, such as Serbian. Manual development of this type of dictionaries is a tedious and extremely slow process. To alleviate this problem we turned to our multipurpose software tool, dubbed LeXimir, in the production of lemmas for e-dictionaries of multi-word units. In addition to that, we developed a procedure aimed at making ...
    Natural Language Processing, Grammatical Category, Lexical Representation, MWU, multi-word unit
    ... es (2004) 22. Wehrli, E., Seretan, V., Nerima, L.: Sentence Analysis and Collocation Identification. In: Proc. of the Multiword Expressions: From Theory to Applications — MWE 2010, pp. 28–36. Beijing, China (2010) View publication statsView publication stats ...
    ... submitted to the Google search engine. The main feature of VebRanka is that it enables inflection of simple words, MWUs and free phrases supplied as key- words to Google. The tool relies on Serbian e-dictionaries, inflection transducers for simple words and MWUs, and uses Unitex and Multiflex modules ...

  • Application of a Method for Intelligent Multi-Criteria Analysis of the Environmental Impact of Tailing Ponds in Northern Kosovo and Metohija

    Gordana Milentijević, Blagoje Nedeljković, Milena Lekić, Zoran Nikić, Ivica Ristović, Jelena Đokić (2016)
    flotacijska jalovišta, životna sredina, višekriterijumska analiza, ekologija, Trepča
    ... the Analytic Hierarchy Process in Agriculture in Developing Countries. Agric. Syst. 1997, 53, 97–112. [CrossRef] 25. Harker, P.T.; Vargas, L.G. The theory of ratio scale estimation: Saaty’s Analytic hierarchy process. Manag. Sci. 1987, 33, 1383–1403. [CrossRef] 26. Brans, J.-P. L’ingénièrie de la décision; ...

  • BaTiO3/NixZn1−xFe2O4 (x = 0, 0.5, 1) Composites Synthesized by Thermal Decomposition: Magnetic, Dielectric and Ferroelectric Properties

    Marija Šuljagić, Ivan Petronijević, Miljana M. Mirković, Aleksandar Kremenović, Adis Džunuzović, Vladimir B. Pavlović, Aleksandra Kalezić-Glišović, Ljubica Andjelković (2023)
    To investigate the influence of spinel structure and sintering temperature on the functional properties of BaTiO3/NixZn1−xFe2O4 (x = 0, 0.5, 1), NiFe2O4, ZnFe2O4, and Ni0.5Zn0.5Fe2O4 were in situ prepared by thermal decomposition onto BaTiO3 surface from acetylacetonate precursors. As-prepared powders were additionally sintered at 1150 °C and 1300 °C. X-ray powder diffraction (XRPD) and scanning electron microscopy (SEM) coupled with electron dispersive spectroscopy (EDS) were used for the detailed examination of phase composition and morphology. The magnetic, dielectric, and ...
    ferroelectric, dielectric properties, magnetic properties, titanate/ferrite composites, phase composition
    ... in dielectric constant with increasing, frequency can be related to Maxwell-Wagner interfacial polarization along with Koop's phenomenological theory [70,71]. The highest value of dielectric constant was observed for BaTiOy / Nio,sZno,5Fe2Oa sintered at 1150 "C in the low and mid frequency regions ...