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Упит dcterms_subject_txt:mathematical content

477 items

  • Utilizing sewage wastewater heat in district heating systems in Serbia: effects on sustainability

    Marija Živković, Dejan Ivezić (2021)
    Transformation of the heating sector is recognized as being essential for ensuring reliable and afordable energy services provided with reduced consumption of energy sources and diminished impact on the environment and less import dependency. The possibility of utilizing energy sources that otherwise would be wasted needs to be considered and treated as a big advantage of district heating systems. Despite many advantages, sewage wastewater heat is still a mostly unused resource at the global level and a totally unused ...
    рекуперација топлоте из отпадних вода, систем даљинског грејања, топлотне пумпе, енергетске уштеде, емисија угљендиоксида, енергетска безбедност, Србија
    ... 88 http://www.beoelektrane.rs/wp-content/uploads/2018/07/7.1-Izve%c5%a1taj-o-poslovanju-za-2017.godinu-Prvi-deo.pdf http://www.beoelektrane.rs/wp-content/uploads/2018/07/7.1-Izve%c5%a1taj-o-poslovanju-za-2017.godinu-Prvi-deo.pdf http://www.beoelektrane.rs/wp-content/uploads/2018/07/7.1-Izve%c5%a1taj ...
    ... Share of renewable energy sources E i,RES Energy content of input to the system of the ith renewable energy carrier Qext,RES Externally supplied heat produced from renewables Kp,dh Carbon dioxide emission coefficient E i Energy content of input to the system of the ith energy carrier Kpi ...
    ... It is calculated by: where E i,RES[MWh] Energy content of input to the system of the ith renewable energy carrier. Qext,RES[MWh] Externally supplied heat produced from renewables, Q ext [MWh] Externally supplied heat, E i [MWh] Energy content of input to the system of energy carrier i. (3)Id ...

  • Using Query Expansion for Cross-Lingual Mathematical Terminology Extraction

    Velislava Stoykova, Ranka Stanković (2018)

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

    Ranka Stanković, Cvetana Krstev, Ivan Obradović, Olivera Kitanović (2017)
    Large collections of textual documents represent an example of big data that requires the solution of three basic problems: the representation of documents, the representation of information needs and the matching of the two representations. This paper outlines the introduction of document indexing as a possible solution to document representation. Documents within a large textual database developed for geological projects in the Republic of Serbia for many years were indexed using methods developed within digital humanities: bag-of-words and named ...
    ... 30% of the content of the projects itself, obtained basically by removing pictures, maps, tables, and the like, offering thus a reasonably accurate representation of the textual content of the geological project. Future plans include digitalization and full text archiving of the project content, followed ...
    ... document, such as title, abstract, author and the like, as well as of keywords which denote doc- ument content. Surrogates can also contain an abstract and/or a snippet, a relevant text fragment. The content of a document surrogate, or its part, can be generated automatically by extracting and selecting specific ...
    ... professional and lay, can use this geo-portal to search and access information available within GeolISS database. The content on the portal is grouped into sev- eral categories: cartographic content, multimedia, dictionaries and textual data- bases. The “core” of GeolISS is the Geological Dictionary (Thesaurus) ...

  • Classification of mining waste landfills according to legislation in Serbia

    Dragana Nišić, Uroš Pantelić, Nikoleta Aleksić, Neda Nišić (2021)
    rudarski otpad, jalovina, uredba, deponija, kategorija A, klasifikacija
    ... i-ew.org/wp-content/uploads/2020/08/globalindutry-standard_EN.pdf https://globaltailingsrevi-ew.org/wp-content/uploads/2020/08/globalindutry-standard_EN.pdf https://globaltailingsrevi-ew.org/wp-content/uploads/2020/08/globalindutry-standard_EN.pdf https://eur-lex.europa.eu/legal-content/EN/TXT/?uri= ...
    ... uri=CELEX%3A32006L0021 https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX%3A32006L0021 https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX%3A32006L0021 https://fdocuments.in/document/icold-small-dams-sept-2011.html https://fdocuments.in/document/icold-small-dams-sept-2011.html https://nzsold ...
    ... Industry Standard on Tailings Mana- gement, Consequence Classification Tables (Annex 2), 2020, Dostupno na: https://globaltailingsrevi- ew.org/wp-content/uploads/2020/08/globalindutry- standard_EN.pdf pristupljeno 19.09.2021. [6] Uredba o uslovima i postupku izdavanja dozvole za upravljanje otpadom ...

  • Integrative GHG Assessment in Oil and Gas Industry

    Aleksandar Mirković, Marija Živković, Stevan Đenadić, Darja Lubarda, Chinedu Anyanwa (2023)
    Reducing greenhouse gas emissions is one of the main targets of national strategies in European countries. As a main contributor to emissions, the energy sector is recognized as the most promising to apply measures and actions aimed to decrease GHG emissions. The Oil and Gas industry as a significant contributor to global greenhouse gas emissions is facing a growing need for estimating, mitigating, and reducing the impact of their operations on the atmosphere to stay competitive in a newly ...
    energetska tranzicija, gasovi staklene baste, industrija, nafta i gas
    ... adequately scaled to Methanc content in the facility-associated gas composition before bcing applied. Additionally, CO>» can also be released from fugitive sources if CO, is present in the gas stream. In this case, the Methane emission factor is scaled based on CO» content in thc gas stream. 4ctuall ...
    ... ekologija, 2023, god. XXV, br. 1 The carbon content of thc fuel mixture can be calculated using the equation [8]: 1 Wt%OC, — 100 mixture — » ;gn,mnenu (Wt%l· ·Wt%c,·) (8) Where: W/t%; - weight percent of component i; W/t%c;i - carbon content of component i on a weight basis. The CO- ...
    ... emitted as CO», with some released as carbon monoxide (CO), methane (CHx), and nitrogen oxides (NOx). The amount of CO emitted depends on the carbon content of the fuel combusted, while the emissions of non- CO. gases mainly depend on the combustion technology and parameters. The methodological approach ...

  • Towards translation of educational resources using GIZA++

    Ivan Obradović, Dalibor Vorkapić, Ranka Stanković, Nikola Vulović, Miladin Kotorčević (2016)
    ... solution to online course content translation that aims at eleven target languages, is automatic – i.e. it is based on statistical machine translation (SMT) techniques – and is therefore easily extendable to other languages, adaptable to various types of educational content genre, independent of course ...
    ... in the way of the development of online courses as the majority of such courses are offered in English. Thus a growing need for translating MOOC content. The solutions provided so far have been fragmentary, human-based, and implemented off-line by the majority of course providers. [2] TraMOOC ...
    ... multilingual support Coursera [7] uses Transifex [8] continuous localization platform, as a cloud-based tool that hosts Coursera’s translatable content and allows partner organizations and individuals to easily contribute course translations from anywhere. At this moment, support for user interface ...

  • Integrated Stratigraphy of the Middle–Upper Jurassic of the Krížna Nappe, Tatra Mountains

    Renata Jach, Nevenka Đerić, Špela Goričan, Daniela Reháková (2014)
    carbon and oxygen isotopes, radiolarians, calcareous dinoflagellates, radiolarites, Krížna Nappe, West ern Carpathians, Tethys
    ... 12%o, for 612C and 6!SO, respectively. The calcium carbonate content of 376 rock samples was estimated by means of a calcimetre by Eijkelkamp, which Works in accordance with the method of Schcibler. The ana- lysis of CaCOy3 content was conducted at the Institute of Geo- logical Sciences of the ...
    ... and results for carbon and oxygen isotope measurements, CaCOy content and microfacies analysis. Age denotes calibration of radiolarian (UAZ 95) or calcareous dinoflagell. 48.3 m, 50 m, 57 m; Fig. 8; see also Mišik, 1959). Thc CaCOy content fluctuates from 6 to 91 wt%; the average value is about 54 ...
    ... CaCOx content is about 50 wt% (Figs 3—8). In the High Tatra and Belianske Tatra Mountains, var- iegated radiolarites are pale reddish brown, with grey or light brown spots of diffusive type and with dark grey chert nodules. Shale intercalations are absent. The CaCOy aver- age content is about ...

  • Improving efficiency of thermal power plants through mine coal quality planning and control

    Mirjana Banković, Dejan Stevanović, Milica Pešić, Aleksandra Tomašević, Ljiljana Kolonja (2018)
    Главни циљ контроле квалитета угља у рудницима лигнита је снабдевање термоелектрана угљем чији квалитет мора да се креће унутар одређених квалитативних ограничења. Карактеристике угља могу да утичу на ефикасност, поузданост и расположивост како котла тако и јединица за контролу емисије. У овом раду аутори су презентовали интегрисану симулацију рударског процеса као нови приступ у истраживању променљивости калоричне вредности угља приликом експлоатације комплексног лежишта лигнита. Резултати таквог приступа омогућавају драгоцен увид у перформансе континуалног рударског система у смислу контроле променљивости ...
    mine planning, variability of coal quality, simulation, coal blending

  • Hydrothermal Synthesized and Alkaline Activated Carbons Prepared from Glucose and Fructose—Detailed Characterization and Testing in Heavy Metals and Methylene Blue Removal

    Sanja Krstić, Milan Kragović, Maja Pagnacco, Vladimir Dodevski, Branka Kaluđerović, Miloš Momčilović, Ivica Ristović, Marija Stojmenović (2018)
    glukoza, fruktoza, аktivni ugalj, hidrotermalni tretman, aktivacija hidroksida, teški metali, metilen plavo
    ... 05 10.17 Presented results showed that the content of organic carbon in samples obtained from glucose was higher in comparison with those obtained from fructose after activation with the same hydroxide. For example, after activation with LiOH, the content of carbon was ~62% for AC@G–750–N2–1.0–LiOH ...
    ... opposite from samples obtained from glucose. The reason for that is the lower carbon content in the AC@F–750–N2–1.0–KOH than in AC@F–750–N2–1.0–NaOH (Table 1). The same ratio between specific surface area and carbon content in activated carbon was also found by other authors [60]. Also, BET surface areas ...
    ... zinc mine and kinetic of the methylene blue removal was studied. The factors which distinguished the KOH activated samples were high yield (~14%), content of organic carbon (63–74%), porosity and specific surface area (SBET ~700–1360 m2/g), a low degree of the crystal phase, indications that potassium ...

  • Savremena primena termovizije

    Damnjanović Vesna (2018)

  • СТРАТЕШКИ ЦИЉЕВИ ЕНЕРГЕТИКЕ РЕПУБЛИКЕ СРБИЈЕ

    Ivezić Dejan (2018)

  • Belt Weigher Accuracy Limiting Factors

    Aleksandrović Snežana, Jović Mihajlo (2010)

  • The Influence of Cyanide Salts and Ferrous Sulphate on Pyrite Floatability

    Kostović Milena, Vučinić Dušica (2016)

  • Klima karakteristike Pirotske kotline

    Milovanović Boško, Ristić-Vakanjac Vesna (2014)

  • Serbia: Mineral Policy

    Vladimir Simić (2017)

  • Mesozoic Radiolaria of Bosnia and Serbia: New data

    Valentina Vishnevskaya, Nevenka Đerić (2010)
    Paleontology

  • Hemoilmenite from andesite of the Late Cretaceous Timok Magmatic Complex, Serbia.

    Aleksandar Luković, Janez Zavašnik, Predrag Vulić, Miodrag Banješević, Kristina Šarić, Vladica Cvetković, Aleksandar Pačevski (2017)

  • Интерпретација геодинамичких догађаја на основу проучавања ултрамафичних ксенолита из палеогених алкалних базалта источне Србије

    Цветковић Владица (2012)

  • Keyword-Based Search on Bilingual Digital Libraries

    Ranka Stanković, Cvetana Krstev, Duško Vitas, Nikola Vulović, Olivera Kitanović (2017)
    This paper outlines the main features of Biblisha, a tool that offers various possibilities of enhancing queries submitted to large collections of aligned parallel text residing in bilingual digital library. Biblishsa supports keyword queries as an intuitive way of specifying information needs. The keyword queries initiated, in Serbian or English, can be expanded, both semantically, morphologically and in other language, using different supporting monolingual and bilingual resources. Terminological and lexical resources are of various types, such as wordnets, electronic ...

  • Volume flow measurement of bulk solids on conveyor belts

    Aleksandrović Snežana, Damnjanović Vesna (2013)