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Упит dcterms_subject_txt:Building and Construction

2350 items

  • Groundwater management by riverbank filtration and an infiltration channel, the case of Obrenovac, Serbia

    Dušan Polomčić, Bojan Hajdin, Zoran Stevanović, Dragoljub Bajić, Katarina Hajdin (2013)

  • Business Models for Small-scale Biomass Projects Development

    Dejan Ivezić, Miodrag Gluščević, Marija Živković (2019)
    Biomass is recognized as the most promising renewable energy source in Serbia. The share of biomass in Serbian final energy consumption is over 10%, but mostly related to traditional use in stoves and ovens. One of the main obstacles for wider implementation of contemporary biomass facilities is the inexperience of consumers and stakeholders in the implementation of “innovative” business models, especially in the cases of small-scale projects. In this paper, three different business models (public utility company, energy cooperative ...
    ... have enough experience and necessary knowledge for implementing this type of projects, which include the development of a complex techno-economic analysis, provision of funds, procurement of equipment, construction of facilities, organization of supply chains, financial monitoring and plant management. One ...
    ... One of the solutions is that energy cooperative engages company to manage project in its name on behalf of cooperative – from design and construction of facility to operation period. However, for such solution, the cost-effectiveness parameters of the project should be somewhat more favorable. Public ...
    ... biomass supplier and district heating system operator. Cooperative model is optimal framework for determination ideal ratio between fuel and heat prices, and adjustment of system profitability, because cooperative members are in the same time fuel sellers and heat energy consumers, and they also expect ...

  • Mitigating hydrate formation in onshore gas wells: A case study on optimization techniques and prevention

    Milica Ješić, Bojan Martinović, Stefan Stančić, Miroslav Crnogorac, Dušan Danilović (2023)
    Gas wells, particularly those situated onshore, play a vital role in the global energy sector by supplying a significant portion of natural gas. However, operational challenges, notably gas hydrate formation, pose substantial issues, leading to complications such as flowline blockages and unexpected well shutdowns. Gas hydrates, crystalline structures resembling ice, ...
    Gas Well, Gas Hydrate Formation, Well Modeling, Well Performance Optimization, Choke Position Adjustments, Methanol Injection

  • 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

  • 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
    ... recoverable heat energy potential for other cities, with district heating systems and plans for WWTP construction, as well as for the evaluation of effects of utilization of full potential. Based on the outcomes from the first and second parts, the projection of the future state of district heating systems ...
    ... a water line with a capacity of 84,000 population equivalents (PE) and some elements of the sludge line for a capacity of 126,000 PE. Digesters for the treatment of sludge and biogas production facilities are under construction. Currently, approx. 60,000 inhabitants are connected to the existing ...
    ... at4ci ties_3. 1_ Label ling_ Guide lines. pdf. Accessed 2 Aug2019 Econoler (2012) National building energy efficiency study for Serbia. World Bank European Commission (2016) An EU strategy on heating and cooling, COM 51 final. https:// ec. europa. eu/ energy/ sites/ ener/ files/ docum ents/1_ EN_ ...

  • Formative evaluation of e-learning projects with the logical framework approach

    Roberto Linzalone, Giovani Schiuma, Ivan Obradović, Ranka Stanković (2015)
    ... Evaluation of E-learning projects is a topic of great interest and growing importance. The evaluation of a project is the construction of the overall judgment, based on a quali-quantitative determination of the benefits and costs associated, with scientific criterion, of a project (evaluand) ...
    ... Enhanced Learning, http://www.baektel.eu). BAEKTEL was initiated with the main goal of building an Open Educational Resource (OER) network offering educational materials by higher education (HE) institutions and best practice examples by enterprise experts. The network is conceived as multilingual ...
    ... Sage, Newbury Park, CA, 1991. [15] Sangrà A., Vlachopoulos D., Cabrera N., Building an Inclusive Definition of E-Learning: An Approach to the Conceptual Framework, The International Review of Research in Open and Distributed Learning, online at http://www.irrodl.org/index.php/irrodl/art ...

  • Definition of criteria and alternatives for choosing the optimal mining method deposits when applying multi: Criteria optimization, Belgrade, June 2024

    Sanja Bajić, Dragoljub Bajić, Branko Gluščević, Radmila Gaćina, Josip Išek (2024)
    multi-criteria decision-making, definition of criteria, underground exploitation

  • Keyword Extraction from Parallel Abstracts of Scientific Publications

    Slobodan Beliga, Olivera Kitanović, Ranka Stanković, Sanda Martinčić-Ipšić (2017)
    ... concepts for the construction of the ontology for the domain of geology and mining in the Serbian language. Finally, it is worth mentioning that the different structure and syntax of the Serbian and English languages are reflected in the results. By combining (translating) Serbian and English keywords ...
    ... documents as a graph models words as vertices (nodes) and their relations as edges (links). The weight of the link is pro- portional to the overall co-ccurrence frequencies of the corresponding word pairs within a corpus. We will focus on the network construction around co-occurrence relations of adjacent words ...
    ... Serbian and English lan- guages. It is important to compare keyword extraction results from whole papers with those extracted solely from short abstracts. Besides that, extracted key- words from whole papers can serve as a basis for the first approximation of a geological ontology construction. In addition ...

  • Centar za hidrogeologiju karsta - 15 godina nauke i struke

    urednici Saša Milanović, Ljiljana Vasić, Zoran Stevanović, Branislav Petrović (2023)
    Centar za hidrogeologiju karsta
    ... groundwater, groundwater supply (research and tapping), research for the „construction · OoT rehabilitation of hydrotechnical facilities in karst, design and construction of hydrogeological facilities (boreholes, wells and tapping structures), special speleological and „caving research of karst underground ...
    ... impact assessment. As geologist, consultant ı and member of boards of expert participated in various stages of investigation, design and construction of dams, reservotrs and tunnels and taping structures in different karst regions (Serbia, Bosnia and Herzegovina, Croatia, Montenegro, Iran, Turkey ...
    ... karst (spring zones and watersheds). • Construction conditions and problems associated with the use of surface Water reservoirs and other artificial structures in karst. • Vulnerability of karst aquifers to pollution, vulnerability maps. Water protection measures in karst and remediation. • ...

  • Damage quantification of built stone on Dark Gate (Belgrade, Serbia): sample of damage index application for decay rate evaluation

    Maja Franković, Nevenka Novaković, Vesna Matović (2015)
    The Dark Gate is the monument of culture, part of the cultural and historical complex of the Belgrade Fortress. It is constructed of limestone blocks that after 270 years of exposure to environmental conditions and different anthropogenic influences show wide ranges of decay forms. During 2007, detail registration of all built limestone microfacies and weathering forms was done using tools of monument mapping. A correlation scheme ‘‘intensity– damage category’’ was made according to the type, intensity, and distribution of ...
    Krečnjak, mapiranje, Indeks raspadanja, brzina raspadanja, progresija
    ... brethane — a report of an 18-year review of brethane-treated sites. In: Fidler J (ed) Stone: stone building materials, construction, and associated component systems: their decay and treatment, english heritage research transactions. 2. James & James, London, pp 3-18 6193 Massa S, Naldini ...
    ... profiled stone blocks of algal rudstone and grainstone in almost same prevalence. Their distribution in this portal imply an organized building technique. While the soft and easy workable algal rudstone was used for upper part and arch of the portal, hard and compact grainstone was built in lower ...
    ... for building and artistic pur- poses. Although stone is generally considered an epitome of durability, factors such as climate change, pollution, use demands, lack of maintenance, and inappropriate past treatments present challenges for the conservation of stone buildings, structures and objects ...

  • Geodynamics of basins above subducted slabs: An integrated modelling study of tectonics, sedimentation, and magmatism in the Timok Magmatic Complex

    Uros Stojadinovic, Marinko Toljic, Branislav Trivic, Radoje Pantovic, Danica Sreckovic-Batocanin, Nemanja Krstekanic, Bojan Kostic, Milos Velojic, Jelena Stefanovic, Nikola Randjelovic, Maja Males (2024)
    Timok Magmatic Complex, Neotethys subduction, basin geodynamics, analogue modelling

  • Phase relations and physical indicators of municipal waste from old landfills in Serbia

    Dragoslav R Rakić, Irena G Basarić Ikodinović, Jovana M Janković, Tina D Đurić (2021)
    Due to certain similarities of municipal waste and soil, usually for the determination of basic parameters of physical state, laboratory and field tests which are common in geotechnical investigations are used. It is often to construct an apparatus for special purpose to perform some specific laboratory and field tests. Therefore, different values of indicators of municipal waste physical state can be found in the literature. The basic reasons should be found in different definitions and methods that researchers use ...
    municipal waste, moisture content, unit weight, specific gravity, grain size distribution, porosityGeneral Computer Science
    ... by the Ministry of Education, Science and Technological Development of Republic of Serbia for the period 2011—2020. REFERENCES 1) De Haan, E.J. (1997): An overview of the mechanical behavior of peats and organic soils and some appropriate construction techniques, Proceedings of Conference ...
    ... important in the construction of facilities for municipal waste classification within separation and transfer stations. Grain size distribution analysis separates fine grained particles which are usually earthen origin — earthy waste (material from cover, degraded material and similar) as well ...
    ... consistency, biodegradability etc. (Vosniakos and Patronic, 2009). Therefore, data on the composition, shape and size of n i Ra5 o — - particles in the landfill can be of great use in defining m:;';]on and selection || > M @523331 the phase composition and physical indicators of iušLte008| Y Horanalysis| ...

  • Towards Better Valorisation of Industrial Minerals andRocks in Serbia—Case Study of Industrial Clays

    Vladimir Simić, Dragana Životić, Zoran Miladinović (2021)
    Management, Monitoring, Policy and Law,Nature and Landscape Conservation
    ... regulated by the Law on Planning and Construction [63] and includes three levels: national, regional, and municipal. The most important for the mining sector is the municipal level of spatial planning. The spatial planning in Serbia related to mining is relatively simple and fast compared to the average ...
    ... be at least 50% longer than the existing ones. In the case of brick clays, scientifically and professionally observed, clays to produce tiles and facade bricks, clays to produce hollow building elements and clays for the production of solid bricks should be separated. Namely, there is a significant ...
    ... usually with limited data on the quality (grade) of IMR, and in that case a competent person has to declare those reserves as inferred re- sources. The other extreme, typical for common clay deposits and deposits of aggregate rocks, construction sand and gravel, is that formal C1 category of Serbian reserves ...

  • Cutting Resistance Laboratory Testing Methodology for Underwater Coal Mining

    Vladimir Čebašek, Veljko Rupar, Stevan Đenadić, Filip Miletić (2021)
    Geology,Geotechnical Engineering and Engineering Geology
    ... el dredger performance, productivity, maintenance costs, and reliability, a rational decision was made: to rehabilitate the most essential parts of the dredge, including the bucket wheel and the gearbox. However, the selection and construction of the excavator parts were performed on the ground of available ...
    ... el dredger performance, productivity, maintenance costs, and reliability, a rational decision was made: to rehabilitate the most essential parts of the dredge, including the bucket wheel and the gearbox. However, the selection and construction of the excavator parts were performed on the ground of available ...
    ... Bucket-wheel dredge “Kovin I” with bucket wheel type UCW-450 has been used for over 25 years for underwater coal mining [20]. The selection and construction of the excavator parts were performed based on available laboratory data for cutting resistance, which was determined by the standard wedge testing ...

  • Application of Project Management Process on Environmental Management System Improvement in Mining-Energy Complexes

    Jelena Malenović Nikolić, Dejan Vasović , Ivana Filipović , Stevan Mušicki, Ivica Ristović (2016)
    menadžment, rudrastvo i energetski kompleksi, okruženje, održivi razvoj, mrežno planiranje
    ... Improving the management system of mining and energy complexes based on risk assessment, environmental law and principles of sustainable development. J. Environ. Prot. Ecol. 2016, 17, 1066–1075. 27. Shan, Y.; Goodrum, P.M. Integration of Building Information Modeling and Critical Path Method Schedules to Simulate ...
    ... power plant “Kostolac B”, in blocks B1 and B2, the final phase of flue gas desulfurization plant construction is in progress, with the aim to reduce emissions of sulfur and nitrogen oxide below 200 mg/Nm3 [15–17]. Preparations have started for the construction of facilities for wastewater treatment. ...
    ... The Investment-technical documentation and Feasibility Study is being prepared, with the preliminary design for construction of wastewater treatment plant “Kostolac B”, for blocks B1, B2, and future block B3 with 350 MW of power [15]. In the area of soil protection in the TPP “Kostolac A”, the current ...

  • Fuzzy Model for Risk Assessment of Machinery Failures

    Dejan V. Petrović, Miloš Tanasijević, Saša Stojadinović, Jelena Ivaz, Pavle Stojković (2020)
    The main goal of this research was the development of an algorithm for the implementation of negative risk parameters in a synthesis model for a risk level assessment for a specific machine used in the mining industry. Fuzzy sets and fuzzy logic theory, in combination with statistical methods, were applied to analyze the time picture state of the observed machine. Fuzzy logic is presented through fuzzy proposition and a fuzzy composition module. Using these tools, the symmetric position of the ...
    fazi teorija, rizik, otkaz rudarskih mašina
    ... between two instances of failure and downtime due to failures in the subsystem “construction”. Subsystem Failure of Element Number of Failures Time to Failure (h) Time to Repair (h) C o n st ru ct io n Belt construction bending 2 553, 1792 3, 7 Belt construction fracture 6 90, 192, 230, 295, 305 ...
    ... into subsystems and the subsystems into elements—that is, into functional units that each affect the risk indicators. The engineering system (the crushing machine) was divided into eight subsystems: the hydraulic, engine, electrical, crushing, screening, transport, construction, and feeder subsystems ...
    ... assessment for occupational health and safety using Pythagorean fuzzy AHP & fuzzy inference system. Saf. Sci. 2018, 103, 123–136. [CrossRef] 10. Amiri, M.; Ardeshir, A.; Zarandi, M.H.F. Fuzzy probabilistic expert system for occupational hazard assessmentin construction. Saf. Sci. 2017, 93, 16–28. [CrossRef] ...

  • Laboratory testing of fly ash

    Miloš Šešlija, Aleksandra Rosić, Nebojša Radović, Milinko Vasić, Mitar Đogo, Milovan Jotić (2016)
    Fly ash is one of the most common waste materials created by burning of coal. It is composed of smaller particles, consisting mainly of aluminosilicate glass, mullite and quartz, which are collected by electrostatic separators (filter) of gaseous products arising from the combustion of coal. This paper presents the pozzolanic properties, mechanical properties, chemical and mineral composition of fly ash obtained in the combustion process in a power plant Nikola Tesla A (PPNT A) with the addition of a ...
    chemical composition, fly ash, mechanical properties, mineral properties, pozzolanic properties, X-ray diffraction
    ... provisions, and other related standards for the determination of some oxides that are provided standard. The chemical properties of fly ash are the most important indicators to assessing their suitability as construction materials or as raw materials for the production of building materials. The ...
    ... Series 1 (S1) and Series 2 (S2) samples were taken for testing, weighing about 20g per sample. 2.4 Mechanical properties of fly ash 2.4.1 Compressive strength – uniaxial strength For a general overview of the ash characteristics as a building material and design of the stability and capacity ...
    ... Stojanović, M.; Radović, N.; Radonjanin, V.; Malešev, M. Use of fly ash for embankment construction in road construction with and without binders. // Proceedings of the 5th Int. conference Civil Engineering - Science and Practice / Žabljak, 2014, pp. 1133-1138. Authors’ addresses Miloš Šešlija ...

  • The Importance of Detailed Groundwater Monitoring for Underground Structure in Karst (Case Study: HPP Pirot, Southeastern Serbia)

    Marina Čokorilo Ilić, Ana Mladenović, Marina Ćuk, Igor Jemcov (2019)
    Geography, Planning and Development,Aquatic Science,Biochemistry,Water Science and Technology
    ... problems, like changes in water quality and quantity, and in groundwater and surface water regimes [2]. These changes occur, not only in the construction phase, but also while the structures are in service. In most cases, the structures cannot be completely isolated and there is constant interaction with ...
    ... problems, like changes in water quality and quantity, and in groundwater and surface water regimes [2]. These changes occur, not only in the construction phase, but also while the structures are in service. In most cases, the structures cannot be completely isolated and there is constant interaction with ...
    ... constructed by standard excavation (first and last parts) and tubing (1/4 and 3/4) with concrete lining (Figure 1). Three observation wells, PP-1, PP-3 and PP-4, were deep-drilled along the tunnel and the screens installed within the tunnel zone. The HPP has a gravity dam and is usually operated 4–5 h/day. Surface ...

  • English for Geology Students. 2

    Lidija Beko (2023)
    Engleski jezik
    ... resultin a range of ores which can serve different purposes: energy (fossil fuels, uranium), construction and industry (aggregates, clays for brick / tile, carbonates for cement), metals. Igneous and magmatic deposits As the contents of a magma chamber begin to cool, particularly in the case ...
    ... of clarity and coherence as a way in which they wish to teach the subject of English language and geology. Six thematic units: 1. Landslides 2. Metamorphic rocks 3. Mineral deposits 4. Hydrological cycle and groundwater 5. Surface water and glaciers 6. Geophysics, seismology and prospecting ...
    ... Faculty of Mining and Geology who have provided Foreword me with valuable assistance, relevant literature and insights, and who have pointed out specific geological terms and translations of those terms in order for me to use them correctly. My reviewers, prof. dr Juliana Vučo and prof. dr Dragoslava ...

  • Rule-based Automatic Multi-word Term Extraction and Lemmatization

    Ranka Stanković, Cvetana Krstev, Ivan Obradović, Biljana Lazić, Aleksandra Trtovac (2016)
    In this paper we present a rule-based method for multi-word term extraction that relies on extensive lexical resources in the form of electronic dictionaries and finite-state transducers for modelling various syntactic structures of multi-word terms. The same technology is used for lemmatization of extracted multi-word terms, which is unavoidable for highly inflected languages in order to pass extracted data to evaluators and subsequently to terminological e-dictionaries and databases. The approach is illustrated on a corpus of Serbian texts from ...
    term extraction, terminology, multi-word units, lemmatization, finite-state transducers
    ... the grant #47003 and #178003. The authors would also like to thank the anonymous reviewers for their helpful and constructive comments. 7. Bibliographical References Ammar, C., Haddar, K., and Romary, L. (2015). Automatic Construction of a TMF Terminological Database Using a Transducer Cascade ...
    ... following the seminal work of Kenneth Church and Patrick Hanks (1990; 1991) and Frank Smadja (1993). A language independent statistical corpus based term extraction algorithm used on English and Chinese corpora is described in (Pantel&Lin, 2001), while Chen and his associates present a MWT extraction ...
    ... linguistic rules to parse documents and retrieve candidate terms and statistical measures to deal with ambiguities and rank candidate terms is given in (Bounhas&Slimani, 2009). Several hybrid methods for extraction of MWT candidates that use both syntactic patterns and statistical measures, mainly ...