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Упит dcterms_subject_txt:Sustainability and the Environment

2611 items

  • 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

  • Creating an environment for free education and technology enhanced learning

    Radojičić Marija, Obradović Ivan, Tatar Saša, Linzalone Roberto, Schiuma Giovanni, Carlucci Daniela (2014)

  • 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

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

    Vladimir Simić, Rade Jelenković, Dragana Životić (2019)
    ... included in the energy mix of Serbia yet. As the Directive 2009/28/EC stipulates that motor biofuels and other liquid biofuels should be accounted for only if they meet the sustainability criteria set forth in the Directive, in the concluding remarks of the Reports it is said that in the absence of ...
    ... , economic and energy efficiency and the protection and revitalization of the environment and building heritage, natural, cultural and historic values; the realization of developmental priorities and the securing of conditions for rational use of non-renewable natural resources and renewable sources ...
    ... of the adopted by-laws defining sustainability criteria and their verification in Serbia “the consumption of biofuel could not be shown for the purposes Complimentary Contributor Copy Biofuels in Serbia 65 of meeting the RES goal in the transport sector” and that “such data may be shown in ...

  • 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)
    ... velocity of the soil depending on distance, the explosive amount, and 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 ...
    ... Oscillation—Second Mode Here we give one more mode to derive the equation for the rock mass oscillation. If, by blasting in the specific environment, the relative increase in the oscillation velocity of the rock mass and the relative increase of the reduced distance are monitored, then it can be seen that ...
    ... stics of the Work Environment in the Veliki Krivelj Open Pit In the Veliki Krivelj Open Pit we performed experimental investigations on copper ore [7]. The basic physical and mechanical properties of the rock mass were determined on samples in the laboratory. By examining the physical and mechanical ...

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

    Ivan Obradović, Ranka Stanković, Olivera Kitanović, Jelena Prodanović (2011)
    ... 254 at master studies and 135 at doctoral studies. The courses supported by the portal involve a teaching staff of 143 professors and teaching assistants. The development environment for the production of the portal was based on the PHP scripting language, and the portal database was implemented ...
    ... technologies are, for example, one of the topics of the Information system design course, whereas spatial databases are a topic within the Databases course, and the courses share the same development environment, ArcGIS, http://www.esri.com. The course material for InfoTech was produced ...
    ... attentively than in the traditional organization of instruction. As of last year, the focus of the development of our blended learning environment is on the well known and widely used open-source Moodle platform. However, we shall also offer an insight into other technologies that have been used ...

  • Building learning capacity by blending different sources of knowledge

    Ivan Obradović, Ranka Stanković, Olivera Kitanović, Dalibor Vorkapić (2016)
    ... s of 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 ...
    ... in a multilingual environment, a language support system is integrated into the BMP, consisting mainly of electronic terminological resources and services. This system will greatly improve the search and browse functionalities within the complex BAEKTEL network. Given the ...
    ... similar opportunities for tracking the progress of graduate students who started to work in companies and are now pursuing the life-long learning approach. The same way university teachers in the academic environment monitor their students, supervisors within the enterprise can monitor how their ...

  • Using Metadata For Content Indexing Within An OER Network

    Ranka Stanković, Olivera Kitanović, Ivan Obradović, Roberto Linzalone, Giovanni Schiuma, Daniela Carlucci (2014)
    ... taken from the LOM standard, suggest the auditorium the resource is intended for, the environment for learning, estimated duration of the course and degree of interactivity. Interactivity level indicates the degree to which the learner can influence the aspect or behaviour of the resource ...
    ... practice and the like. As these resources need to bediscoverable, accessible and shared by potential learners across the learning environment, it is very important that they are well described and tagged in a standard way in machine readable form by metadata. Only then can they be successfullyused and reused ...
    ... specification, the standard nomenclature was used, enabling learning resources to be described and shared in a common way, and thusenhancingtheir portals. The need for metadata OER need to be shared, accessible and discoverable by potential users across the learning environment. They should ...

  • 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
    ... aspects, ensuring of a safe and healthy work environment, and the possibility of sustainable ore extraction. An inadequate technology and its parameters can considerably reduce the benefits of mining.,, as well as bear upon economic viability and safety, which is one of the important criteria for decision ...
    ... that need to be examined. On the one hand, this includes excavation 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 ...
    ... igh. 'The geologic framework of the deposit was defined based on exploratory activ- ities, largely data collected from exploratory boreholes. The tectonic relationships are highly complex. The deposit is in a carbonate rock environment, including, underlying: and overlying, limestones. The underlying ...

  • Environmental flows and demands for sustainable water use in protected karst areas of the Western Balkans

    Zoran Stevanović, Aleksandra Maran Stevanović, Želimir Pekaš, Romeo Eftimi, Veljko Marinović (2021)
    Karst terrains cover some 30% of the Western Balkans, where rich karst aquifers represent the main source of potable water supply and ensure the development of local economies and tourism. In this “classical karst” region, there are also numerous sites or areas under different forms of protection—from those that are included in the UNESCO World Heritage list to natural monuments and landscapes that are protected by national legislation. In and around them are specific representatives of flora and fauna ...
    Karst, Zaštićena područja, Ekosistem, Ranjivost i održivost, Zapadni Balkan

  • Environmental flows and demands for sustainable water use in protected karst areas of the Western Balkans

    Zoran Stevanović, Aleksandra Maran Stevanović, Želimir Pekaš, Romeo Eftimi, Veljko Marinović (2022)
    Karst terrains cover some 30% of the Western Balkans, where rich karst aquifers represent the main source of potable water supply and ensure the development of local economies and tourism. In this “classical karst” region, there are also numerous sites or areas under different forms of protection—from those that are included in the UNESCO World Heritage list to natural monuments and landscapes that are protected by national legislation. In and around them are specific representatives of flora and fauna ...
    Karst, zaštićena područja, ekosistem, ranjivost i održivost, Zapadni Balkan

  • Modeling and Monitoring of Karst System as a Base for its Evaluation and Utilization - a Case Study from Eastern Serbia

    Milanović Saša, Stevanović Zoran, Vasić Ljiljana, Ristić-Vakanjac Vesna (2011)

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

    Vesna Cvetkov, Ilija Vasiljević, Mirko Petković (2015)

  • Actual contamination of the Danube and Sava rivers at Belgrade (2013)

    Milan Antonijević, Marija Arsović, Josef Cáslavský, Vesna Cvetković, Predrag Dabić, Mladen Franko, Gordana Ilić, Milena Ivanovic, Nevena Ivanović, Milica Kosovac, Dragana Medić, Slobodan Najdanović, Milica Nikolić, Jovana Novaković, Tatjana Radovanović, Djurdjina Ranić, Bojan Šajatović, Gorica Špijunović, Ivana Stankov, Jelena Tošović, Polonca Trebse, Olivera Vasiljević, Jan Schwarzbauer (2014)
    rečni sistemi, stanje zagađenja, organski zagađivači, teški metali, skrining analize, non-target screening
    ... metals in the sediments To exemplify the distribution and levels of sediment contamination by heavy metals in the Sava and Danube Rivers, the metals As, Cd, Cr, Cu, V, Pb, Ni and Zn were selected for analyses due to their abundance and toxic effects in the environment of highly industrialized and urbanized ...
    ... OF SAVA AND DANUBE 1179 three samples (the Sava – Makiš, the Sava – near confluence and the Danube – Vinča). Lindane (the γ-isomer of 1,2,3,4,5,6-hexachlorocyclohexane) was pro- duced industrially until the late 1980s when it was banned, but it can still be detected in the environment, as was case ...
    ... indicated contamination. Hence, a risk for the aquatic environment has to be assumed, but an intervention is not required. With respect to the Cu content, the Danube sediments at the location Vinča and the Sava sediments at the location Kapetanija slightly exceeded the target values (36 mg kg–1), but all ...

  • Valorization of non-balanced coal reserves in Serbia for underground coal gasification

    David Petrović, Lazar Kričak, Milanka Negovanović, Stefan Milanović, Jovan Marković, Nikola Simić, Ljubisav Stamenić (2019)
    In the name of a better and safer energy future, it is our responsibility to focus our knowledge and activities to save on imported liquid and gas fossil fuels, as well as coal on which energy security of Serbia is based. The rationalization in the use of available energy resources certainly positively affects economy and the environment of a country. This paper indicates motivations for the application of the underground coal gasification process, as well as surface gasification for ...
    ugalj, gasifikacija, zaštita životne sredine, skladištenje, solarna
    ... features of the UCG The commercial sustainability of the UCG process will primarily depend on geolog- ical constraints. The UCG with the obligation to separate CO, from the gas mixture of UCG, and its possible storage carbon capture and storage, depends on the technological development of the separation ...
    ... cost of the final product (normalized to 1 MJ of energy), — there is no significant degradation of the terrain, since all the non-combustible substances (slag or ash) remain in the deposits bencath the surface of the earth, — there is no substantial pollution of the environment and the working ...
    ... with the alm of making rational use of this significant and relatively inexpensive energy source, while at the same time reducing its nega– tive impact on the environment. Coal in the global thermal energy balance participates close to 80%. Fossil fuels (solid, liquid and gaseous) are involved ...

  • 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
    ... influence on the environment. It belongs to the Besna Kobila metallographic region (1823 m) and it is located in the southeast of Serbia, near the town Vranje (Figure 1). In the Grot mine, the exploitation and processing (flotation) of lead-zinc ore is carried out. Production of ore in the Grot mine is ...
    ... economy, strict rules and laws have caused high control of the level of waste materials being released into the environment, and consequently, due to applying adequate techniques for waste purification, the influence of industry on the environment is usually very small or negligible. On the other hand, in ...
    ... economy, strict rules and laws have caused high control of the level of waste materials being released into the environment, and consequently, due to applying adequate techniques for waste purification, the influence of industry on the environment is usually very small or negligible. On the other hand, in ...

  • INVENTS: A Hybrid Mine Ventilation Planning and Design System

    Lilić Nikola, Stanković Ranka, Obradović Ivan (2013)
    Ventilation system analysis is a complex process based on the calculation and analysis of numerous parameters. These problems can be successfully solved by the SimVent numerical package, but a full understanding and use of the obtained results require the involvement of an experienced specialist in the ventilation field. The solution was found in the creation of a hybrid system INVENTS, whose knowledge base represents a formalization of the expert knowledge in the mine ventilation field. In this paper we ...
    hybrid systems, mine ventilation, expert systems
    ... according to a number of criteria. The result of such an expert analysis is an estimate of the validity and effectiveness of the ventilation system followed by suggestions for its improvement. The architecture of the system and the software environment in which the system was developed enable a dynamic ...
    ... analysis phase. The task of visual modeling of the system is to define the objects and logic of the real system using the adopted graphic notation. In view of the fact that SimVent was developed in Visual Studio 6.0 programming environment, the package was presented through UML notation in the form of t ...
    ... constructing and using applications by means of a high-level graphical environment which generates standard C code. In the KAPPA-PC system, the components of the domain are represented by objects that can be either classes or instances within classes (Fig.9). The relationships among the objects in a ...

  • INVENTS: a hybrid system for subsurface ventilation analysis

    Nikola Lilić, Ranka Stanković, Ivan Obradović (2000)
    Ventilation system analysis is a complex process based on the calculation and analysis of numerous parameters. These problems can be successfully solved by the SimVent numerical package, but a full understanding and use of the obtained results require the involvement of an experienced specialist in the ventilation field. The solution was found in the creation of a hybrid system INVENTS, whose knowledge base represents a formalization of the expert knowledge in the mine ventilation field. In this paper we ...
    ... according to a number of criteria. The result of such an expert analysis is an estimate of the validity and effectiveness of the ventilation system followed by suggestions for its improvement. The architecture of the system and the software environment in which the system was developed enable a dynamic ...
    ... analysis phase. The task of visual modeling of the system is to define the objects and logic of the real system using the adopted graphic notation. In view of the fact that SimVent was developed in Visual Studio 6.0 programming environment, the package was presented through UML notation in the form of t ...
    ... constructing and using applications by means of a high-level graphical environment which generates standard C code. In the KAPPA-PC system, the components of the domain are represented by objects that can be either classes or instances within classes (Fig.9). The relationships among the objects in a ...

  • Процјена хазарда и ризика од клизишта за различите нивое просторног планирања у Републици Српској, БиХ

    Цвјетко С. Сандић (2022)
    Територија Републике Српске је у посљедних десетак година веома угрожена активирањем нових и реактивирањем старих клизишта. Она својим дјеловањем наносе огромне материјалне штете, па и људске жртве, те је неопходно озбиљније третирање и дјеловање у борби са овим природним хазардом. Чест проблем јесте одговорност, тј. надлежност институција из ове области и недостатак у законској регулативи која готово никако или само површно обрађује област хазарда и ризика од клизишта. Усљед непостојања праксе и усвојених методологија које су у примјени у свијету, циљ ...
    Kлизишта, склоност, хазард, ризик, процјена, просторно планирање, угроженост