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Упит dcterms_subject_txt:Sustainability and the Environment

2793 items

  • Flood protection and water utilization of karst poljes: example of Gatačko Polje, Eastern Herzegovina

    Tina Dašić, Ljiljana Vasić (2020)
    Earth-Surface Processes,Geology, Pollution, Soil Science, Water Science and Technology, Environmental Chemistry,Global and Planetary Change

  • A business intelligence approach to mine safety management

    Ljiljana Kolonja, Ranka Stanković, Ivan Obradović, Olivera Kitanović, Dejan Stevanović, Marija Radojičić (2016)
    ... highest standards for security, work environment, health, and safety, this being one of the prerequisites for securing the best human resources and ensuring stable operation at minimal risk. In order to achieve this, it does not suffice simply to react to a problem when it occurs, but an analysis ...
    ... occupation and professional and soft skill training, on the directly responsible supervisor, and on possible eyewitnesses of the accident. Further, the organizational unit and the workplace of the worker are recorded, while the job that the worker was performing is selected from a catalog and additionally ...
    ... Figure 2. The main panel with data about the injury The system also records the worker’s experience at the time of injury, namely: employment and total years of service, previous injuries and the average number of work hours. The time when the injury at work occurred is defined by the date, the working ...

  • Arsenic in tape waters of the south Pannonian basin (Serbia) and arsenic risk assessment

    Petar Papić, Marina Ćuk, Maja Todorović, Jana Stojković, Bojan Hajdin, Nebojša Atanacković, Dušan Polomčić (2012)
    ... was undertaken in accor- dance with the Drinking Water Sampling and Laboratory Analysis Rulebook [24]. The laboratory for chemical test- ing of the environment at the Faculty of Natural Sciences of the University of Novi Sad used advanced and specialized tools for the precise required analysis. Arsenic ...
    ... direction, from the eastern edges of the Alps in Austria and Slovenia to the Carpathian Mountains in Romania. In the south, the basin is bordered by the North Dinarides in Croatia, Bosnia and Herzegovina, and Serbia, and in the north by the Tatras in Slovakia. The Danube River is also the western boundary ...
    ... metal, is rarely found in the environment. Instead, it is usually combined with one or more other elements such as oxygen, chlorine, and sulfur. This combination is referred to as inorganic arsenic. Arsenic combined with carbon and hydrogen is referred to as organic arsenic. The organic forms are usually ...

  • VENTEX: An Expert System for Mine Ventilation Systems Analysis

    Ranka Stanković, Nikola Lilić, Ivan Obradović (1996)
    Analiza sistema za ventilaciju je komleksan proces, koji bazira na proračunu brojnih parametara, koji se odnose na: stanje mreže, provetrenost, stabilnost sistema, gubitke vazduha, klimatske uslove, gasno stanje, ugroženost od požara i opasne prašine. Navedeni problemi se uspešno rešavaju paketom SimVent, ali potpuno razumevanje i korišćenje dobijenih rezultata zahteva angažovanje iskusnog specijaliste iz oblasti ventilacije. Rešenje je nađeno u kreiranju ekspertnog sistema VENTEX, čija je baza znanja formalizacija ekspertskog znanja iz oblasti ventilacije rudnika. U radu je prikazana metodologija ...
    ekspertni sistem, ventilacija
    ... range of tools for constructing and using applications by means of a high-level graphical environment. In the KAPPA-PC system, the components of the domain are represented by objects that can be either classes or instances within classes. The relationships among the objects in a model can be ...
    ... information exist: the SimVent numerical routines and the user. The hierarchical decomposition of the main goal into subgoals, representing the problem-solving strategy, makes it easier to cope with the complexities and to coordinate the use of numerical routines on one hand, and the knowledge i ...
    ... structure. The outlined features of the knowledge base should make both the coordination knowledge within the knowledge base, and the communication between the symbolic and the numerical part of the VENTEX system easier. 4. IMPLEMENTATION ISSUES VENTEX was developed using the KAPPA-PC ...

  • Sitni, ali bitni: uloga sitnih sisara, herpetofaune i mekušaca u rekonstrukciji pleistocenskih paleosredina

    Katarina Bogićević, Draženko Nenadić, Dragana Đurić, Mihajlo Jovanović, Aleksandra Savković (2023)
    Fosilni ostaci životinja i biljaka imaju važnu ulogu u rekonstrukciji pleistocenskih paleosredina. U ovom radu opisan je značaj tri grupe životinja: sitnih sisara, herpetofaune I mekušaca. Mada je za rekonstrukciju važan sastav čitave asocijacije, nalasci pojedinih vrsta mogu biti dovoljno indikativni da otkriju tip staništa ili klimatske uslove. Posebnu teškoću pri rekonstrukciji paleosredina u Srbiji predstavlja činjenica da klimatske promene na Balkanskom poluostrvu nisu bile tako oštre kao u srednjoj i zapadnoj Evropi, pa ne postoji drastična razlika u ...
    ... whether the immediate environment was forest, steppe or open type (wet meadows to steppe), whether these are species that indicate marshy, river and lake environments or are in question forms that are exclusively related to loess and terrestrial living conditions, etc. Conclusion: The use of small ...
    ... from the genus Corbicu/a, which are present in the alluvial deposits of the northern parts of Serbia, have great climatic and stratigraphic significance. During the Middle Pleistocene, Corbicu/a retreated from the Pannonian Basiın, inhabiting the Caspian Basin, India and some parts of the American ...
    ... tion: The simplest and at the same time the most frequently used method for habitat type reconstruction is the method of ecological groups. For each species, it is determined in which group of habitats it most often lives today, and then the percentage representation of each group in the entire ...

  • Development of Open Educational Resources (OER) for Natural Language Processing

    Cvetana Krstev, Biljana Lazić, Ranka Stanković, Giovanni Schiuma, Miladin Kotorčević (2015)
    In this paper we present the development of an online course at the edX BAEKTEL platform named “Lexical Recognition in the Natural Language Processing (NLP)”. It is based on the course of the same name for PhD studies at the University of Belgrade, Faculty of Philology. There are not many courses in Computational Linguistics (CL) on OER platforms, and there is none in Serbian either for CL or NLP. We have developed this course in order to improve this ...
    E-Learning, Open Educational Resources, Computational Linguistics, Lexical Resources, edX
    ... criteria [15]:  adjusting the content to the target group,  systematization and gradualism in the teaching process,  connecting the theory and the practice. To satisfy the first criterion of adjusting the content to the target group, we provided a description of the course, a list of required ...
    ... will be used and the literature related to the topics included in the course. Whenever possible, hyperlinks to the materials are provided. If the material does not exist in e-format, a link to the list of libraries where the item can be found is provided. We also described the necessary pr ...
    ... enable users gradually advance until the end of the course. These principles are used to satisfy the criteria of systematization and gradualism in the teaching process. The third principle of connecting the theory and practice is fulfilled by using the video tutorials. These tutorials are ...

  • Production of electricity from coal-fired power plants and accompanying CO2 emissions: comparison of EU-27 and US

    Uroš Djorgovski, Aleksandar Madžarević, Predrag Jovančić (2023)
    Even in the third decade of the 21st century, large power plants are still responsible for more than half of the electricity production in Europe and US. They predominantly use fossil fuels in their work, which results in the emission of pollutants into the air, soil and water. In addition to the production of electric energy, fossil fuels, including coal, are used for industrial purposes. Although the use of coal, especially in the countries of the European Union, is ...
    CO2, емисија, угаљ, термоелектрана, САД, ЕУ-27
    ... this sector is also decorated with the satisfaction of existence and comfort in performing daily activities with an increasingly obvious pressure on the systematic reduction of the impact on the environment in the processes of production, transformation, and consumption of electricity. Total ...
    ... between the level of development of a country or region and the amount of energy consumed in the country. Figure 3 shows the ratio of specific electricity production per capita in the EU-27 and the US. In the last 2 decades, the ! Minor amounts of coal are still consumed in the residential and tra ...
    ... plants in the EU-27 and power plants in the US for the period 1990-2021 with projection The projection and targets for 2030, 2040 and 2050 has been showed at Figure 7. At the same time, the decline in emissions compared to 1990 was also marked at the same figure. In the countries of the EU-27, there ...

  • Towards translation of educational resources using GIZA++

    Ivan Obradović, Dalibor Vorkapić, Ranka Stanković, Nikola Vulović, Miladin Kotorčević (2016)
    ... match 100 %, the search functions of CAT tools can find them through special "fuzzy search" features.  CAT tool has support for terminology look-up, display and insertion of the search results into the text being translated. 4. ENVIRONMENT FOR TEXT ALIGNMENT Preliminary phase for the text alignment ...
    ... element of the text correlates with the translation of the element in the corresponding textNext, the following 3 steps are taken: tokenisation, truecasing and cleaning. At the end, the language model (LM) is used to ensure fluent output, and is thus built with the target language. The presented ...
    ... activity at the University of Belgrade Faculty of Mining and Geology and the first results using the GIZA++ tool for training statistical translation models will be presented. The paper also describes the translation memory in the form of parallel sentences or phrases required by GIZA++ for the learning ...

  • Izveštaj o održanoj međunarodnoj konferenciji “7th Conference on Sustainable Development of Energy, Water and Environment Systems - SDEWES 2012”

    Bajić Dragoljub, Zarić Jelena, Ristić-Vakanjac Vesna, Polomčić Dušan, Čokorilo Marina (2014)

  • Middle Aptian Orbitolinid limestones in Belgrade (Serbia): microfacies and depositional environment

    Bojana Đorđević, Hans-Jürgen Gawlick, Nevenka Djerić, Felix Schlagintweit, Miloš Radonjić (2023)
    Orbitolinidae, Microfacies, Early Cretaceous, Dinarides

  • New data on the age of an Upper Cretaceous clastic-carbonate succession in Brežđe (Western Serbia)

    Nevenka Đerić, Nataša Gerzina (2014)
    Gornja kreda, radiolarije, Jadar blok, zapadni pojas Vardarske zone, zapadna Srbija
    ... dant radiolarians in the studicd samples indicate a relatively proximal slope environment (KITESSLING, 1996). 5. DISCUSSION AND CONCLUSIONS After the Late Jurassic obduction and subsequent erosion in the Dinaridic-Hellenic belt, Cretaceous synorogenic basins were formed and filled with clastic ...
    ... However, the original position of the Jadar block below the ophiolitic mćlange is visible only in the area of Takovo. In other places, however, the Jadar block seems to be thrust over the mćlange and ophiolites (south of Valjevo) and partly over the Late Cretaceous sediments (in the area of Poćuta) ...
    ... body pushed into the Vardar Zone in the Late Cretaceous (KARAMATIA et al., 1994). The present-day tectonic contact between the Drina- Ivanjica and the Jadar Block (Fig. 2) is very steep and with a strong dextral strike-slip component (GERZINA & CSON- TOS, 2003). In the literature, this contact ...

  • WS4LR - a Worksation for Lexical Resources

    Cvetana Krstev, Ranka Stanković, Duško Vitas, Ivan Obradović (2006)
    Lexical Resources, Wordnet, Serbian
    ... Preferences form in the software. It is thus possible to choose the Intex, Unitex and/or NooJ module, with a selected list of dictionaries. An important feature of WS4LR is its flexibility expressed both by the possibility of setting environment parameters and by the possibility of invoking command-line ...
    ... input and output to XAlign, as well as the corresponding TMX format are given. 2.4 Finite Transducers As described in section 2.1, inflectional paradigms are represented by appropriate finite state transducers usually produced by the graph management tool in Intex/Unitex environment. The produced ...
    ... general in the form usually used in traditional dictionaries, K is the part of speech mark, nnn is the number denoting the class of lemmas that all share the same inflectional properties described by the appropriate transducer Knnn, and +SinSem is the freely attached marker that describes the syntactic ...

  • Analysis of the exhaust emissions inventory from auxiliary mining machines

    Stevan Đenadić, Aleksandar Mirković, Jovana Mitrović, Filip Miletić, Predrag Jovančić, Dragan Ignjatović (2023)
    Open-pit coal mines are equipped with a large number of mining machines and vehicles with diesel engines. Due to common daily operation of these machines and vehicles large amounts of exhaust gases which contain numerous pollutants are emitted into the atmosphere. The demand to reduce air pollution induced the activities in developed countries to map and calculate all gases emitted by industries to formulate and select adequate preventive activities. In collaboration with machine manufacturers, emission standards for off-road machines ...
    emissions, mining, auxiliary machines

  • Cutting Resistance Laboratory Testing Methodology for Underwater Coal Mining

    Vladimir Čebašek, Veljko Rupar, Stevan Đenadić, Filip Miletić (2021)
    Geology,Geotechnical Engineering and Engineering Geology
    ... specific research and testing program that would involve appropriate laboratory testing of the geomechanical parameters. These were to represent the influence of hydrostatic water pressure on the working environment—coal. Nevertheless, geomechanical laboratory research tests were initially modified to ...
    ... specific research and testing program that would involve appropriate laboratory testing of the geomechanical parameters. These were to represent the influence of hydrostatic water pressure on the working environment—coal. Nevertheless, geomechanical laboratory research tests were initially modified to ...
    ... suitable hydraulic press, used to apply the vertical force to the wedge. The vertical force constantly increases until the sample splits. During the tests and determining the value of the force which led to the sample splitting, the size of the wedge penetration into the specimen is recorded [24]. Cutting ...

  • Inhibitory effect of platinum and ruthenium bipyridyl complexes on porcine pancreatic phospholipase A2

    Tina Kamčeva, Jörg Flemmig, Bojana Damnjanović, Jürgen Arnhold, Aleksandar Mijatović, Marijana Petković (2011)
    Fosfolipaza pankreasa A2 (PLA2) igra važnu ulogu u ćelijskoj homeostazi kao iu procesu karcinogeneze. Efekti metalo-lekova koji se koriste kao hemoterapeutici na aktivnost ovog enzima nisu poznati. U ovom radu, interakcija između PLA2 svinjskog pankreasa i dva odabrana kompleksa prelaznih metala — tetrahloro(bipiridin) platine(IV) ([PtCl4(bipi)]) i dihloro (bipiridin) rutenijum(III)hlorida ([RuCl2(bipi)2) ]Cl)—proučavana je. Laserska desorpcija/jonizacija uz pomoć matriksa, vremenska masa spektrometrija (MALDI-TOF MS) i fluorescentna spektroskopija korišćeni su za analizu aktivnosti enzima u odsustvu i prisustvu metalnih kompleksa i za ...
    Metals and Alloys, Biochemistry, Biomaterials, Biophysics, Chemistry (miscellaneous)
    ... measurements. The fluorescence of PLA2 when excited at 280 nm is mainly due to the presence of a single tryptophan residue (Trp3) which is located on the surface of the enzyme molecule and exposed to the environment.39 All fluorescent spectra of PLA2 solution were recorded in the presence of increasing ...
    ... intensity and the fact that ruthenium exhibits a broad distribution of isotopes. The original [RuCl2(bipy)2]Cl is apparently converted in the aqueous environment into two different species, one losing all chloride anions, and another replacing them with one more bipy ligand. Thus, the two new mass ...
    ... labeling of the substrate is required.35 Briefly, this approach for the determination of the PLA2 activity is based on the quantification of the product (lysolipid) in the MALDI-TOF mass spectra depending on the time of incubation with the enzyme.31,36,37 The data obtained showed that all PL and LPL classes ...

  • State and perspective of individual household heating in Serbia: A survey-based study

    Boban Pavlović, Dejan Ivezić, Marija Živković (2021)
    This paper presents the results of the household survey on individual household heating systems in Serbia. The survey was conducted in the period October to December 2020 with the participation of 1100 households with individual household heating systems. The information collected in the questionnaire can be separated into three main parts: basic household data, current heating system characteristics, and households’ perceptions and attitudes. The survey results provide unique and comprehensive information concerning individual household heating systems and the main ...
    Domaćinstva, Individualni sistemi grejanja, Korišćenje energije, Stavovi potrošača, Anketa, Srbija

  • Age and microfacies of oceanic Upper Triassic radiolarite components from the Middle Jurassic ophiolitic mélange in the Zlatibor Mountains (Inner Dinarides, Serbia) and their provenance

    Hans-Juergen Gawlick, Nevenka Đerić, Sigrid Missoni, Nikita Bragin, Milan Sudar, Divna Jovanović (2017)
    Neo-Tethys, trench-like basins, synorogenic deposition, evolving thrust belt, Triassic palaeogeography
    ... Missoni 2015), but the recon- struction of the depositional environment of radiolarites pro- vides a number of answers for the open questions. The investigations of the resedimented Late Triassic oceanic ribbon radiolarite clasts in the ophiolitic mćlange between Trnava and Rožanstvo result in ...
    ... Depositional environment, age and facies of the Middle Triassic Bulog and Rid formations in the Inncr Dinarides (Zlatibor Mountain, SW Serbia): evidence for the Anisian break-up of the Neotethys Ocean. Neues Janrb. Geol. Palćiontol. 4bh. 269, 291—320. Sugiyama K. 1997: Triassic and Lower Jurassic ...
    ... oceanic basin (Dinaridic Ocean) between the External (Triassic restricted lagoon) and Internal Dinarides (Triassic open lagoon, reef belt and transitional facies) is not possible due to the missing facies transitions from the lagoon to the open marinc environment. b — Middle Jurassic westward directed ...

  • 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
    ... heating system reflects on its impact on the environment, as well as on the energy security of supply (import dependency and fuel mix diversification) and the primary energy factor. It is calculated by: where E i,RES[MWh] Energy content of input to the system of the ith renewable energy carrier. Qext ...
    ... for ensuring reliable and affordable energy services provided with reduced consumption of energy sources and diminished impact on the environment and less import depend- ency. The possibility of utilizing energy sources that otherwise would be wasted needs to be considered and treated as a big advantage ...
    ... pumps. The effects on sustainability are assessed through analysis of key performance indicators to provide deeper insight in energy efficiency, energy security, and carbon dioxide emission of district heating systems (primary energy factor, import dependency index, fuel mix diversification and carbon ...

  • Prognoza operativne efikasnosti aktivnog podzemnog rudnika zasnovana na teoriji sivih sistema

    Svetlana M. Štrbac-Savić (2016-06-10)
    Efikasnost predstavlja preduslov za opstanak svake rudarske kompanije, posebno u uslovima izuzetno konkurentnog trţišnog okruţenja kao što je to rudarska industrija. Efikasnost oznaĉava sposobnost kompanije da ispuni svoje kratkoroĉne ili dugoroĉne ciljeve. Operativna efikasnost se definiše kao odnos izmeĊu ulaznih parametara potrebnih za odvijanje proizvodnje i pokazatelja dobijenih proizvodnjom. U kontekstu rudarskog poslovanja, operativna efikasnost se odnosi na vreme potrebno da se mineralno dobro transformiše u novĉana sredstva. Visoka operativna efikasnost se postiţe kada se ostvari prava kombinacija karakteristika ...
    podzemni rudnik, operativna efikasnost, prognoza, teorija sivih sistema, stohastiĉke diferencijalne jednaĉine, simulacija
    ... important to emphasize the forecasting acts serve as a basis for further planning. The forecasting process is performed in a specific environment. If we take into consideration the fact that the environment is changed over time then it is obvious that the forecasts and targets are changed as ...
    ... estimation of the company in order to achieve them. Planners try to forecast the behavior of the input variables of production environment and arrive at desirable states. They create their strategies on realistic targets drawn from these forecasts. A forecast is based on past and current production ...
    ... describe environment changes in order to strategically link the forecasting and planning functions, improving the performance of both. Large capital intensive projects, such as those in the mineral resource industry, are often associated with diverse sources of both endogenous and exogenous ...

  • Mesozoic carbonate rocks in Serbia used as dimension stone

    Vesna Matović, Tijana Vojnović Ćalić (2016)
    The building industry in Serbia uses, to a great extent, imported natural stone for architectural purposes. The significance of local deposits, particularly limestones, is not adequately perceived despite the country’s abundance of these valuable resources. Therefore, this study focuses on Serbia’s Mesozoic carbonate rocks, specifically on the deposits of four selected quarries: Klisura, Skrzut, Struganik, and Tisnica. The quality and prospects of the application of these limestones has not yet been the subject of a detailed, comprehensive investigation. Therefore, ...
    Ukrasni kamen, Mezozoik, Krečnjak, Srbija, Petrografija, Fizičko-mehanička svojstva
    ... (2013) Depositional environment, age and facies of the Middle Triassic Bulog and Rid formations in the Inner Dinarides (Zlatibor Mountain, SW Serbia): evidence for the Anisian break- up of the Neotethys Ocean. N Jahrb Fir Geol Paliionto! Abh 269(3):291—320 Terezopoulos N (2004) The challenge for ...
    ... (Fig. 1). The area is part of the northern rim of the Maljen ophiolitic massif, located in the Western Belt of the Vardar Zone (Karamata and Krstić 1996; Karamata 2006). The wide territory is characterized by a complex morphology and is distinguished by two areas: the plain of the tertiary basin ...
    ... dark grey and grey in the base of the lithological column, and pink and pinkish-red in the middle, to the intensive red of the highest layers of nodular limestone (Fig. 2a). Preserved shells of various macrofossils (e.g., ammo- nites) further contribute to the aesthetic appearance. The homogencity ...