Претрага
251 items
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Conversion of land areas after coal mine closure and reclamation
Otkopavanje uglja površinski i podzemno praćeno je degradacijom zemljišta, promenom formiranja predela i izmenom flore i faune. Od velikog značaja je razvoj novih naučno utemeljenih pristupa obnovljanje antropogeno poremećenih predela zasnovanih na formiranju rekultivacionih i rudarskih tehnologija. Apsolutno je neophodno obezbediti sveobuhvatno kvalitetno očuvanje zemljišnih i vodnih resursa i odrediti rekultivisano zemljište za novu namenu. U ovom članku je dat pregled najpopularnijih metoda rekultivacije zemljišta i mogućnosti rekultivacije zemljišta nakon završetka rekultivacije i zatvaranja rudnika uglja.... Ordinal number Eligibility criteria IC)ate oEry KI The amount of investments per unit of area x K2 Investment period - investment time x K3 Time of return of invested funds x K4 Annual maintenance costs per unit surface x K5 Adaptability of the recultivation solution to the environment X Ko ...Radmila Gaćina, Bojan Dimitrijević, Sanja Bajić. "Conversion of land areas after coal mine closure and reclamation" in 9th International conference mining and environmental protection MEP 23 Proceedings, Sokobanja, 24-27.05.2023., Belgrade : University of Belgrade - Faculty of mining and geology (2023)
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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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A bilingual digital library for academic and entrepreneurial knowledge management
A generic knowledge management process of organization, storage and retrieval of knowledge can suitably be fitted in a digital library. In the digital and knowledge age digital libraries can be used in knowledge management to handle intellectual assets and support knowledge creation. A multilingual digital library either stores content in more than one language or provides multilingual query access to monolingual content. In Serbia 18 of 308 scientific journals regularly published are bi-lingual, with papers simultaneously being in English ...... tool ACIDE (Aligned Corpora Integrated Development Environment) (Utvić et al., 2007). The TMX document consists of TU2 (Translation Unit) and TUV (Translation Unit Variant) elements, where each TUV is a segment in one of the languages. The following example illustrates a single aligned segment (TU) ...
... resources in the form of morphological e-dictionaries and grammars, implemented by finite state automata, finite state transducers and multi-word unit inflection rules (Krstev, 2008). All of them are used to improve the full-text search performance of our DL, especially the recall. 4.2 Library ...Ranka Stanković, Cvetana Krstev, Biljana Lazić, Dalibor Vorkapić. "A bilingual digital library for academic and entrepreneurial knowledge management" in Proceeding of 10th International Forum on Knowledge Asset Dynamics — IFKAD 2015: Culture, Innovation and Entrepreneurship: connecting the knowledge dots, Bari, Italy, 10-12 June 2015, Bari : IFKAD (2015)
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From DELA Based Dictionary to Leximirka Lexical Database
Biljana Lazić, Mihailo Škorić (2020)In this paper, we will present an approach in transforming Serbian language Morphological dictionaries from a DELA text format to a lexical database dubbed Leximirka. Considering the benefits of storing data within a database when compared to storing them in textual documents, we will outline some of the functionality that the database has made possible. We will also show how hand-made rules that use category labels lexical entries are marked with can be used to link lexical entries. ...... for a library and information science domain). The following is an entry from the DELACF dictio- nary describing one inflectional form of multiword unit: “fakultetske bibliotekare, fakultetski (fakultetski.A2:adms1g) bibliotekar (librarian.N2:ms1v).NC:mp4”. The first part - “fakultetske bibliotekare” ...
... Figure 5. Detailed description of the view panel of a lexical entry is also provided in in the Appendix after the Figure 5. Editing panel for multiword unit can be found in the Appendix of this paper - Figure 6. The Corpus-related segment is used to access the search for available corpora. The Evaluation ...
... DELA based dictionary to . . . ”, pp. 81–98 Figure 6. Editing panel of a lexical entry “fakultetski bibliotekar ” . A panel for editing a multiword unit is illustrated with the example “fakultetski bibliotekar” (in Figure 6). On this panel privileged users can edit the entry information from the database ...Biljana Lazić, Mihailo Škorić. "From DELA Based Dictionary to Leximirka Lexical Database" in Infotheca, Faculty of Philology, University of Belgrade (2020). https://doi.org/10.18485/infotheca.2019.19.2.4
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Дефинисање археолошких објеката на локалитету Кремените њиве применом Ојлерове 3Д деконволуције на магнетометријске податке
... rformed on synthetic models. METHODS Magnetic measurements are based on the measurement of the Earth's magnetic field. The unit is Tesla T, but as this unit is great for application, in geophysics and in archeology, nanotesla is used nT = 10‐9T. Two types of magnetization are meas ...Весна Цветков, Илија Васиљевић, Бранислав Сретеновић, Весна Дамњановић. "Дефинисање археолошких објеката на локалитету Кремените њиве применом Ојлерове 3Д деконволуције на магнетометријске податке" in Књига апстраката 17. Конгрес геолога Србије, Врњачка Бања 17-20. мај, Српско геолошко друштво (2018)
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Assessments of effects of implementation of strategic plans for development of Belgrade District heating system
The district heating system (DHS) is one of the key elements of the Belgrade energy system. Overview of the current state and basic characteristics of the DHS are presented in this paper. The focus is on the planned development of DHS and on the analyses of effects of realization of measures and projects defined by strategic documents related to DHS which are adopted by city authorities (Development Strategy of DHS and Strategy of Belgrade Development). Two exploratory scenarios were ...Dejan Ivezić, Marija Živković, Aleksandar Madžarević, Miodrag Grujić. "Assessments of effects of implementation of strategic plans for development of Belgrade District heating system" in Sustainable Cities and Society, Elsevier BV (2020). https://doi.org/10.1016/j.scs.2020.102304
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Simple 2D gravity–density inversion for the modeling of the basin basement: example from the Banat area, Serbia
We have developed a technique to calculate lateral density distribution of the sedimentary basin basement by combining linear gravity–density inversion and 2D forward modeling. The procedure requires gravity anomaly data, depth-to-basement data and density data for the sediments (density–depth distribution). Gravity efect of density variations in the basement was extracted from the total gravity anomaly by removing the joint efect of the sediments with vertical density variations and homogeneous basement of average density contrast (calculated by 2D modeling). Gravity ...Ivana Vasiljević, Snežana Ignjatović, Dragana Đurić. "Simple 2D gravity–density inversion for the modeling of the basin basement: example from the Banat area, Serbia" in Acta Geophysica, Springer (2019). https://doi.org/10.1007/s11600-019-00328-9
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‘Blue-’ and ‘Brown-speckled’ pottery from Qalhât, the Sultanate of Oman (13–16th centuries): Comparison with traditional Omani 19–20 century productions
Representative ‘Blue speckled’ (13–16th centuries) and ‘Brown speckled’ (13–21st century) wares recovered from the excavations in Qalhât or collected around Bahlâ city (Sultanate of Oman) were characterized by XRPD, SEM-EDS, Raman/optical microspectroscopy, and thermal expansion. Minerals present in the body (quartz, augite and albite as major phases, calcite, dolomite, rutile, anatase, phosphate, hematite and magnetite as minor phases) were identified by XRPD and/or Raman spectroscopy. SEM-EDXS microanalysis was performed on the glazes in order to compare their composition, especially ...Liliana Gianni, Hélène Renel, Aleksandar Kremenović, Philippe Colomban. "‘Blue-’ and ‘Brown-speckled’ pottery from Qalhât, the Sultanate of Oman (13–16th centuries): Comparison with traditional Omani 19–20 century productions" in Boletín de la Sociedad Española de Cerámica y Vidrio, Elsevier BV (2020). https://doi.org/10.1016/j.bsecv.2020.06.005
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The Fuzzy–AHP Synthesis Model for Energy Security Assessment of the Serbian Natural Gas Sector
Natural gas is used for the production of almost 20% of total energy today. The natural gas security of the Republic of Serbia is an urgent strategic, political and security issue. Serbia is one of the most vulnerable countries in Southeast Europe, because it only has one supply route. This study is a contribution to efforts to better understand the factors affecting energy security through the implementation of a new methodology based on the fuzzy–AHP synthesis model for measuring ...... energy development with economic, environmental, social and other parameters related to that development (energy consumption/production per capita, per unit of gross domestic product, by amount of emitted pollutants, etc.). However, some of the important indicators that describe energy development, such ...
... Effective monitoring and reporting of greenhouse gas emissions is the basis for progress in achieving emission reduction. Coefficients of CO2 emission per unit of energy produced are used, due to different contribution to greenhouse gas emissions, primarily carbon dioxide kCO2 = 3.67a? gc H [kgCO2/GJ]. ...
... describes the type, intensity and mode of emission of the remaining pollutants (solid particles, NOx, SOx, COx, VOC, etc.) Pollutant emission factors per unit of energy produced are used [g pol/GJ]. The indirect environment effect Partial indicator of the accompanying effect of the use of natural gas on ...Aleksandar R. Madžarević, Dejan D. Ivezić, Miloš L. Tanasijević, Marija A. Živković. "The Fuzzy–AHP Synthesis Model for Energy Security Assessment of the Serbian Natural Gas Sector" in Symmetry, MDPI AG (2020). https://doi.org/10.3390/sym12060908
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WS4LR - a Worksation for Lexical Resources
... lemma that is represented by its DELAS entry form, and :categories are 1 Term multi-word unit is sometimes used. 2 Intex homepage: http://msh.univ-fcomte.fr/intex/ 3 Unitex homepage: http://www-igm.univ-mlv.fr/~unitex/ 4 Nooj homepage: http://www ...
... drive;diskovni pogon diskette;disketa diskette drive;disketni pogon disk file;diskovna teka disk format;diskovni format disk pack;diskovno paklo disk unit;diskovna jedinica 1697 ...Cvetana Krstev, Ranka Stanković, Duško Vitas, Ivan Obradović. "WS4LR - a Worksation for Lexical Resources" in Proceedings of the Fifth Interantional Conference on Language Resources and Evaluation, Genoa, Italy, May 2006, ELRA - European Language Resources Association (2006)
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Integrisano okruženje za pripremu paralelizovanog korpusa
Razvoj paralelizovanih korpusa zahteva pripremu paralelnih tekstova za njihovu integraciju u paralelizovani korpus. Reč je o jednom kompleksnom zadatku koji se može rešiti na različite načine, i koji mora da se odvija u nekoliko koraka. U ovom radu najpre je iznet postupak pripreme paralelnih tekstova za paralelizovani korpus koji se koristi u Grupi za jezičke tehnologije Univerziteta u Beogradu. Potom je dat kratak pregled programa (XAlign, Concordancier, WS4LR), odnosno softverskih alata koji se pri tome koriste. Nedostatak udobnog okruženja ...... celine. Naime, TMX dokument se sastoji iz tzv. jedinica prevođenja (translation unit - tu), pri čemu svaka od njih sadrži uparene segmente paralelnih tekstova, koji se nazivaju varijantama jedinice prevođenja (translation unit variant - tuv). Međutim, programski paket koji se koristi za kreiranje par ...Ivan Obradović, Ranka Stanković, Miloš Utvić. "Integrisano okruženje za pripremu paralelizovanog korpusa" in Zbornik radova međunarodnog simpozijuma Razlike između bosanskog/bošnjačkog, hrvatskog i srpskog jezika, Graz, Austria, April 2007, - (2007)
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Quantitative landslide risk assessment in the city of Tuzla
In the climate-changing conditions, geological environment interacts more dramatically with the urban fabric than before. The urbanization is expansive and more aggressive than before, but so are the weather extremes and long-term climate trends. In effect, many processes which can be triggered by either side, nature or engineering, are becoming more pervasive than before, and such is the case with landslides. Dealing and managing landslides requires few crucial steps, starting from collecting data on landslide location and typology – ...... sector as element at risk, mapped on the basis of building structure and average population density per unit; building structure polygon database; average population density allocated per dwelling unit; population density normalized to 0-1 range. ● Distance-based vulnerability assessment: producing ...Miloš Marjanović, Biljana Abolmasov, Cvjetko Sandić, Miralem Mulać, Petar Begović. "Quantitative landslide risk assessment in the city of Tuzla" in SCG-Xiii International Symposium on Landslides. Cartagena, Colombia- February 22-26, 2021, International Society for Soil Mechanics and Geotechnical Engineering (2021)
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Long-term planning methodology for improving wood biomass utilization
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. ...Vladimir Vukašinović, Dušan Gordić, Marija Živković, Davor Koncalović, Dubravka Živković. "Long-term planning methodology for improving wood biomass utilization" in Energy, Elsevier BV (2019). https://doi.org/10.1016/j.energy.2019.03.105
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The Reciprocal Algebraic Integers Having Small House
Dragan Stankov (2021)Algebraic integer, the house of algebraic integer, maximal modulus, reciprocal polynomial, primitive polynomial, Schinzel-Zassenhaus conjecture, Mahler measure, method of least squares, cyclotomic polynomialsDragan Stankov. "The Reciprocal Algebraic Integers Having Small House" in Experimental Mathematics (2021). https://doi.org/ 10.1080/10586458.2021.1982425
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Fluid inclusion systematics in the Okoška gora polymetallic deposit
... its southern part consist ofmetasedimentary series belonging to the Eastern Alps, more precisely to the eclogite-bearing рап ој ће Koralpe-Weltz unit, which represents the upper (or middle) part of the Austroalpine imbricated stack (Schmidetal., 2020 and referencestherein). The metasedimentary sequence ...Aleš Šoster, Miloš Velojić, Barbara Potočnik Krajnc, Matej Dolenec. "Fluid inclusion systematics in the Okoška gora polymetallic deposit" in 25th meeting of Slovenian geologists, Ljubljana, 2021, Univerza v Ljubljani, Oddelek za geologijo (2021)
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Towards a Mining Equipment Ontology
... or its group component. For each parameter assigned to the type of equipment, a data type is defined (numerical or textual), the parameter measuring unit (m, kW, m/min,...), and the parameter type. Thus the right hand side of the Figure depicts technological parameters for the calculation of technological ...
... elements of bucket wheel excavator SchRs 630 25/6, which has been selected in the tree on the left hand side. Namely, the data type, the measurement unit, the way in which data are created (by reading, entry, entry for each sub-bench , or reading for each bench, etc.), as well as the maximal range of ...Ranka Stanković, Ivan Obradović, Olivera Kitanović, Ljiljana Kolonja. "Towards a Mining Equipment Ontology" in Proceedings of the 12th International Conference Research and Development in Mechanical Industry, RaDMI 2012, September 2012, Vrnjačka Banja, Serbia no. 1, Vrnjačka Banja, Serbia : SaTCIP (Scientific and Technical Center for Intellectual Property) Ltd. (2012)
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A Tool for Enhanced Search of Multilingual Digital Libraries of E-journals
This paper outlines the main features of Bibliša, a tool that offers various possibilities of enhancing queries submitted to large collections of TMX documents generated from aligned parallel articles residing in multilingual digital libraries of e-journals. The queries initiated by a simple or multiword keyword, in Serbian or English, can be expanded by Bibliša, both semantically and morphologically, using different supporting monolingual and multilingual resources, such as wordnets and electronic dictionaries. The tool operates within a complex system composed ...... describing the aligned texts) and a body, containing a set of translation units (TU) composed of two or more semantically equivalent translation unit variants (TUVs). Each TUV contains the text (one or more sentences or segments) in one of the TMX document languages, where the text in the first ...
... language. The example in Figure 1 shows a TU from an INFOtheca journal article in English translated into Serbian: Figure 1. A translation unit (TU) from text in English translated into Serbian Besides TMX documents generated from articles published bilingually in INFOtheca, our document ...Ranka Stanković, Cvetana Krstev, Ivan Obradović, Aleksandra Trtovac, Miloš Utvić. "A Tool for Enhanced Search of Multilingual Digital Libraries of E-journals" in Proceedings of the 8th International Conference on Language Resources and Evaluation, LREC 2012, May 2012, Istanbul, Turkey, Istanbul, Turkey : European Language Resources Association (2012)
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Parametri zbijanja komunalnog otpada određeni različitim laboratorijskim metodama
Jovana M Janković Pantić, Dragoslav R Rakić, Irena G Basarić Ikodinović, Tina D Đurić, Snežana Bogdanović (2021)Zbijanje komunalnog otpada predstavlja jednu od osnovnih faza korišćenja komunalne deponije. Zbog toga je kao i kod drugih nasutih građevina, veoma korisno odrediti parametre zbijanja: maksimalnu suvu zapreminsku težinu (dmax) i optimalnu vlažnost (wopt). Dobijeni rezultati mogu da posluže prilikom projektovanja kapaciteta deponije kao i prilikom definisanja obradivosti otpada. U dosadašnjoj praksi najčešći način određivanja parametra zbijanja je standardna metoda (Proktorov opit) koja se koristi u mehanici tla, uz eventualnu redukciju energije zbijanja. Međutim, različiti tretmani komunalnog otpada na ...... operating, е ог ће landfill. Therefore, as with other embankment structures, it is уегу usefull to determine compaction parameters, maximum dry unit weight (ydmax) and optimal moisture content (Wopt). The obtained results can be изед in designing the capacity ог the landfill as well as when defining ...Jovana M Janković Pantić, Dragoslav R Rakić, Irena G Basarić Ikodinović, Tina D Đurić, Snežana Bogdanović . "Parametri zbijanja komunalnog otpada određeni različitim laboratorijskim metodama" in Građevinski kalendar, Savez građevinskih inženjera Srbije (2021)
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Analysis Of the Process Of Carbon Capture Utilization And Storage In Underground Reservoirs
John Nyame (2024)The importance of mitigating the effects of global climate change has necessitated an in-depth exploration of innovative strategies to reduce carbon dioxide (CO2) emissions. Among these strategies, Carbon Capture, Utilization, and Storage (CCUS) has emerged as a promising and transformative solution. This master thesis delves into the diverse realm of CCUS processes, aiming to unravel the positives challenges, and opportunities within this dynamic field. The analysis begins with a systematic examination of carbon capture technologies, encompassing post-combustion, pre-combustion, and oxy-fuel combustion ...... work (W) divided by unit mass (m) (ton): w*= W '/m (1) The specific net power consumption (W'net) is defined as the difference between the power output and the power input: w*net= W 'output- w'input (2) where w output indicates the power produced by the system per unit mass. The power output ...
... injection started, the storage formation and expected CO» behavior was studied. The extra installations needed to handle the CO» coming from the capture unit were compressor trains including gas turbine drives, and an injection well. The CO» is compressed in stages to 80 bars and cooled to about 40%C ...
... the wellhead therefore limiting any corrosion and hydrate formation. To be able to handle 1 Mt CO per year, four parallel units were needed. Each unit has a fluid knockout drum, a compressor, a cooler and a gas turbine driver. Again, the compressor train with its gas turbine drive was designed ...John Nyame. Analysis Of the Process Of Carbon Capture Utilization And Storage In Underground Reservoirs, 2024