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Упит dcterms_subject_txt:working environment

453 items

  • Towards more sustainable district heating systems in Serbia - Options and obstacles

    Marija Živković, Boban Pavlović, Dejan Ivezić, Miloš Tanasijević, Dejan Stojanović (2024)
    The major share of energy consumed in the building environment is dedicated to meeting heating needs, which makes this sector one of the key players in the transformation of the whole energy system. The accurate approach to the transition process assumes acting on both the demand and supply sides. Lately, the supply side has received more attention, as its transformation is one of the key steps of the energy transition process. District heating systems are recognized as substantial contributors ...
    energetska tranzicija, daljinsko grejanje, dekarbonizacija, obnovljivi izvori energije, prepreke, Srbija

  • Molecular and Isotope Composition of Biomarkers in Immature Oil Shale and its Liquid Pyrolysis Products (Open and Closed System)

    Gordana Gajica, Aleksandra Šajnovic, Jan Schwarzbauer, Aleksandar Kostić, Branimir Jovančićević, Ksenija Stojanović (2021)
    The molecular and isotopic composition of biomarkers in initial bitumen isolated from raw immature oil shale samples from the Lower Miocene Aleksinac Basin (Serbia) and liquid products (LPs) obtained by pyrolysis in open (OS) and closed systems (CS) are studied. The influence of pyrolysis type and variations of kerogen type on biomarkers composition and their isotopic signatures in LPs is determined. The molecular composition of the LPs from the OS pyrolysis is very similar to those in initial bitumen, independently ...
    ... TOC), but also certain variations in sources and depositional environment of organic matter (sample D13 - type I kerogen, deposited in freshwater environment; sample D16 - mixed type I/II kerogen, deposited in brackish environment; Gajica et al., 2017). Pyrolytic experiments were performed in open ...
    ... influence on n-alkane parameters and the Pr/Ph ratio is observed. Therefore, OS pyrolysis can be useful for assessment of source and depositional environment of OM. Pyrolysis in the CS caused more intense thermal stress; therefore the source fingerprints notably disappear. The obtained results indicate ...

  • Fragmentation Size Prediction of Blasted Material Using a Specialized Software for Drilling and Blasting

    Stefan Milanović, Nikola Simić, Lazar Kričak, Milanka Negovanović, Nikola Đokić, Miljan Gomilanović (2024)
    Design and optimizing the drilling and blasting parameters, should fill the requirements for the capacity, fragmentation size, and technical characteristics of loading and transport equipment, and enable a safe work at the open pit. Besides mentioned, it also achieves the minimal impact on the environment of the open pit and decreases the negative effects on the environment, especially in the blast vibration and flyrock. To obtain the best possible blasting effects and consider all the factors, a specialized software is ...
    optimization, O-Pitblast, drilling, blasting, fragmentation size

  • An Integrated Environment for Management and Exploitation of Linguistic Resources

    Ranka Stanković, Ivan Obradović (2009)
    ... problems in formulating queries for web search engines. This need and the possibili- Fig. 4 The main panel for working with wordnets RANKA STANKOVIC ET. AL.: AN INTEGRATED ENVIRONMENT FOR MANAGEMENT AND EXPLOITATION OF LINGUISTIC RESOURCES291 ty to make some of the functions developed within WS4LR ...
    ... Измењено: 2023-10-14 03:28:15 An Integrated Environment for Management and Exploitation of Linguistic Resources Ranka Stanković, Ivan Obradović Дигитални репозиторијум Рударско-геолошког факултета Универзитета у Београду [ДР РГФ] An Integrated Environment for Management and Exploitation of Linguistic ...
    ... nized use of two wordnets (for example, Serbian and Eng- lish), where corresponding synsets are linked via the unique identifier ILI. While working with a particular synset the user can use the hypernym/hyponym relations to ask for a tree representing the synset with parent and child ...

  • Rock slope stability analysis under Hoek–Brown failure criterion with different flow rules

    Svetlana Melentijević, Zoran Berisavljević, Dušan Berisavljević, Claudio Olalla Marañón (2024)
    The stability analysis of homogeneous rock slope following the Hoek–Brown failure criterion under the hypothesis of different flow rules is performed based on limit equilibrium and finite element methods. The applied failure criterion is the generalized Hoek–Brown that can be introduced as a shear/normal function in analysis applying different flow rules. The results are compared with those obtained by the application of equivalent shear strength parameters of the Mohr–Coulomb criterion, considering that this is still the most widely used ...
    Kružna klizna površ, Huk-Braunov kriterijum loma, Kriterijum popuštanja, Smičuća/normalna funkcija, Nivo napona, Verovatnoća i parametarska analiza

  • A Tel Platform Blending Academic And Entrepreneurial Knowledge

    Ivan Obradović, Ranka Stanković, Jelena Prodanović, Olivera Kitanović (2013)
    ... g newly emerged knowledge generated by technological development into academic programs, and updating academic knowledge of graduate students working for enterprises. BAEKTEL encompasses tools, learning content and implementation resources. It also features a backend control panel offering to ...
    ... often time-consuming and slow. On the other hand, academic knowledge that graduate students bring from their universities when they start working for an enterprise becomes partly outdated in time, as new knowledge in the their academic field of expertise emerges. Hence, the now widely recognized ...
    ... emerging entrepreneurial knowledge available to students in academic institutions, and for updating academic knowledge of graduate students working in enterprises. The approach relies on blending knowledge from the two sources, academic and entrepreneurial, within BAEKTEL, a platform founded ...

  • An oilfield in Libya: A new model to enhance waste water disposal

    Dušan Danilović, Vesna Karović Maričić, Nori Elhaddad, Branko Leković (2016)
    нафта, лежишне воде, припрема

  • Agent-based modeling as a support to an expert-based approach: Exploring individual heating systems transition

    Boban Pavlović, Marija Živković, Dejan Ivezić (2022)
    Expert-based energy scenarios are mainly developed following assumptions of experts and, in most cases, a limited number of stakeholders. Such an approach will provide satisfactory results in centrally managed energy sectors where further decisions could be envisaged relatively precisely (electricity production/distribution, district heating systems, etc.). The same approach will provide more uncertain outcomes of future energy structure in the household sector, where decisions related to consumption, selection of energy source, or application of specific technology are made by numerous ...
    Energetska tranzicija, Grejanje domaćinstava, Individualni sistemi grejanja, Energetsko planiranje, Integrisano energetsko planiranje, ABM, LEAP, Srbija

  • From post-disaster landslides inventory to open landslides data

    Biljana Abolmasov, Miloš Marjanović, Uroš Đurić, Jelka Krušić (2021)

  • Развој модела конструкције просторија отварања рудника са подземном експлоатацијом

    Dražana M. Tošić (2016-08-26)
    Приликом израде подземних просторија у стјенској маси долази до нарушавања природне равнотеже напонских стања стијенског масива који су владали прије израде тих просторија, при чему долази до појаве прертасподјеле напона и његове концентрације у појединим правцима и тачкама, односно долази до појаве пластичних деформација које су праћене ломљењем стијенске масе и кретањима материјала према откопаном простору...
    модел, метод коначних елемената, просторија отварања, напон, дефеормација стијенског масива, алгоритам функционалних зависности

  • Assessment of environmental radioactivity and health hazard at Stara Planina region

    Slavko Dimovic, Boris Vakanjac, Ivana Jelic, Milena Rikalovic, Vesna Ristic-Vakanjac, Radoje Bankovic (2021)
    Циљ студије је био да се процени потенцијални ризик од зрачења у близини напуштених рудника уранијума, јаловишта или лежишта уранијума на Старој планини у Србији. За процену ризика одређено је неколико параметара: активност еквивалента радијума, Raeq, екстерни индекс опасности, Hex, брзина апсорбоване дозе гама зрачења, D, годишња ефективна доза на позадинској експозицији гама гама на отвореном, AEDoutdoor и ризик од рака током живота, ELCR. Добијени резултати су показали да сви узорци, осим једног, имају Raeq вредност и до два ...
    природна радиоактивност, животна средина, здравље, опасност, процена ризика

  • 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

  • Some models for determination of parameters of the soil oscillation law during blasting operations

    Suzana Lutovac, Dragan Medenica, Branko Gluščević, Rade Tokalić, Čedomir Beljić (2018)
    ... for Model 3. In doing so, it was noted that all three models can be used to calculate the oscillation velocity of the rock mass. Keywords: working environment; blasting; seismic effect; oscillation velocity; soil oscillation law 1. Introduction As the relation between the soil oscillation velocity ...
    ... attributed to the effect of small faults and karstified cracks in the deposit. By examination of physical and mechanical properties of the working environment, the following values are obtained: ‚ angle of internal friction: φ = 31˝351 ‚ cohesion: C = 138.33 kPa ‚ volume weight: γ = 26.26 kN/m3 ‚ ...
    ... conditions of blasting and geologic characteristics of the soil; all of this being determined on the basis of test blasting for the specific work environment. In the Sadovskii equation two parameters, K and n appear and they are conditioned both by rock mass characteristics and blasting conditions. The ...

  • Mineral Resources of Serbia: Environmental, Societal and Economic Challenges

    Vladimir Simić, Rade Jelenković, Dragana Životić (2019)
    ... exploitation and processing of mineral commodities on environment, constraints on the content of environmentally harmful components, the public opinion on geological exploration and mining etc); • Societal parameters (possibilities for new working places, taxation policy, the level of infrastructural ...
    ... natural resources and environment and implemented in parallel with measures contained in agri-environmental programme. Also, there is a need to support diversification and improvement of life quality in rural areas, particularly producer incomes in the areas with difficult working conditions. Spatially ...
    ... corridors, cover crops, biocontrol and organic seed production. He is currently working on several projects funded by the Ministry of Education, Science and Technological Development, and Ministry of Agriculture and Environment of the Republic of Serbia, and has participated in the team that created several ...

  • Strategic Environmental Assessment in the Application of Preventive Protection for Wind Farm Noise—Case Study: Maestrale Ring Wind Farm

    Boško D. Josimović, Aleksandar Cvjetić, Božidar Manić (2021)
    Determining the spatial position of wind turbines is the initial and most important phase in the development of a wind farm project. In this sensitive phase, all potential problems that may arise in the later stages of project development should be prevented by means of spatial and urban planning instruments. This makes it possible to achieve maximum use of the potential of wind in a particular space and, thus, fulfil the technical and economic requirements of the project while ...
    Energija,energetski inženjering i elektroenergetska tehnologija,obnovljivi izvori energije, održivost i životna sredina,električni i elektronski inženjering,kontrola i optimizacija,inženjering
    ... to Limit values for the noise indicators (LVNI) Greater −2 Disturbs the environment to a greater extent (increase in level of noise at recep- tors between 3 and 4 dB compared to LVNI) Lesser −1 Disturbs the environment to a lesser extent (increase in level of noise at receptors below 3 dB compared ...
    ... y noise produced by wind turbines. Front. Public Health 2015, 3, 3. 36. Cooper, K.; Kirkpatrick, P.; Stewart, A. Health effects associated with working in the wind power generation industry: A com- prehensive systematic review. JBI Libr. Syst. Rev. 2014, 12, 327–373. 37. Tonin, R. A review of wind ...
    ... since the introduction of SEA as an instrument for evaluating the consequences and impact of particular policies, plans and programs on the environment, with the purpose of ensuring that the principles of sustainable development and environmental protection are fully included in the earliest d ...

  • Using Metadata For Content Indexing Within An OER Network

    Ranka Stanković, Olivera Kitanović, Ivan Obradović, Roberto Linzalone, Giovanni Schiuma, Daniela Carlucci (2014)
    ... Education Working Group of the Dublin Core Metadata Initiative developed DC terms to describe educational resources. They also proposed a number of LOM elements to be added to enhance the DC record. Several metadata initiatives follow the recommendations provided by the DC Education Working Group ...
    ... "medium",a hypertext; "high", a lesson with multiple-choice exercises providing feedback; "very high", a virtual 3-D environment that enables exploring. Context is the principle environment within which the learning process, that is, the use of the learning object is intended to take place. By selecting ...
    ... the latest version of NotreDAM package is currently under construction, but the instructions for previous versions are also incomplete. It is working properly on Ubuntu 10.04, but for Ubuntu 12.04 it works only partially. The system is developed in Python. DSpace(http://www.dspace.org/) is a ...

  • Building learning capacity by blending different sources of knowledge

    Ivan Obradović, Ranka Stanković, Olivera Kitanović, Dalibor Vorkapić (2016)
    ... resources, the Education Working Group of the Dublin Core Metadata Initiative developed supplementary DC elements for their description, and proposed the addition of a number of LOM elements to further enhance the DC model. Recommendations of the DC Education Working Group are followed by several ...
    ... the learning environment, estimated time frame needed to master the learning resource, and the level of its interactivity. The intended end user role field indicates the general profile of the expected user: learner, teacher, manager or supervisor. Context describes the environment within which ...
    ... languages, in various forms such as videos, audio streams and written material. In order to facilitate the use of these materials in a multilingual environment, a language support system is integrated into the BMP, consisting mainly of electronic terminological resources and services. This system will ...

  • An aproach to Implementation of blended learning in a university setting

    Ivan Obradović, Ranka Stanković, Olivera Kitanović, Jelena Prodanović (2011)
    ... no specific technical preconditions for installing Moodle. At FMG, Moodle runs on a server with an Intel® Core™2 Quad Processor @2.33Ghz, 4GB working memory and a 500GB hard disk in RAID 1 regime, whereas the operating system platform is Fedora Core 13 (kernel version 2.6.33.3). The bottleneck ...
    ... Another three hours are dedicated to practical instruction which is performed in computer laboratories, for groups of 20 students, each student working on an individual computer under the supervision of a teacher or teaching assistant. Organization of educational content The course material ...
    ... face-to- face instruction is being seriously challenged. However, it is safe to say that the role of instructors in an ICT supported learning environment has not lost its importance, but rather that their approach to instruction, and their obligations and responsibilities are undergoing a substantial ...

  • Development of integrated fuzzy model for mine management optimization

    Miodrag Čelebić, Sanja Bajić, Dragoljub Bajić, Dejan Stevanović, Duško Torbica, Vladimir Malbašić (2023)
    fuzzy logika, višekriterijumsko odlučivanje, ocenjivanje eksperata
    ... author. DOT:10.7546/ CRABS.2023.09.12 1413 in enormous amounts of money. This industry hires a large number of miners, who require favourable working; conditions. Additionally, ore deposits are largely found at large depths, causing; certain mine management problems that need to be examined. ...
    ... ly, also based on experience and the physical and mechanical proper- 1414 M. Čelebić, S. Bajić, D. Bajić et al. ties of bauxite, underground working: areas required supporting, in places of well- developed caverns. The overlying rocks are Senonian limestones, with numerous fracture systems, ...
    ... costs, extractable ore reserves, and ore depletion during; the course of mining. On the other hand, a safe mining: technology and a healthy work environment need to be ensured for miners. The paper describes a model used to arrive at an optimal solution for select- ing the appropriate mining; technology ...

  • Depth estimation of archeological objects using Euler 3D deconvolution of magnetic data

    Vesna Cvetkov, Ilija Vasiljević, Mirko Petković (2015)