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Упит dcterms_subject_txt:road design

307 items

  • 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
    ... data, 57. 3) Fassett J.B., Leonards G.A., Repetto P.C. (1994): Geotechnical Properties of Municipal Solid Waste and Their 110 Use in Landfill Design, PasteTech '94 - Landfil! Technology Conference, Charleston, South Carolina, USA, 1-32. 4) Gourc J.P., Staub M.J. (2010): The Biohydro-mechanical ...

  • A Mathematical Learning Environment Based on Serbian Language Resources

    Radojičić Marija, Obradović Ivan, Stanković Ranka, Utvić Miloć, Kaplar Sebastijan (2018)
    In recent years, in line with ever growing usage of Information technology, the learning environments are changing. The amount of available learning materials in various forms has increased. These new environments demand comprehensive learning systems, which enable management of the learning corpus with special attention paid to relevant lexical resources. In this paper we present the concept of a Mathematical Learning Environment in Serbian (MLES), which is based on a corpus of mathematical materials and various lexical resources, enabling ...
    mathematical content, text processing, mathematical formulae
    ... development of mathematical vocabulary. The realization of the application was based on the ASP.NET Framework for C# programming language and MVC design pattern, as well as HTML and JavaScript, whereas SQL Server served as support for the database. The application is located at http://termi ...

  • 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

  • Correlation Between Dynamic CBR and Compaction and Bearing Capacity of Pavement Foundation Layers

    Milan Bogdanović, Snežana Bogdanović, Dragoslav Rakić, Irena Basarić Ikodinović (2024)
    This paper presents a dynamic California Bearing Ratio (CBRd) device that can be used on a prepared pavement foundation layer to obtain a certain parameter of the tested material in the laboratory and in situ in a direct and fast way. For the selected natural material (gravel), it is shown that the laboratory CBRd can be used to estimate the compaction and bearing capacity, because it correlates well with the parameters of the standard and modifed Proctor compaction tests. ...
    korelacija parametara, donji slojevi saobraćajnica, laboratorijska i terenska ispitivanja, dinamički kalifornijski indeks nosivosti CBRd
    ... conditions, and the dependence between the parameters can be consid- ered to evaluate the suitability of materials and the compaction and load capacity in road construction. In the present study, this device was used for measurements in the laboratory and at a specific field location. Based on the obtained ...
    ... hriften Fiir Boden und Fels im Strajćenbau, Koln, B 7.1 (2012). M. }. Sulewska, “The control of soil compaction degree by means of LFWD,” Balt. J. Road Bridge Eng., 7(1), 56-41 (2012). Zorn Instruments, “Operating Manual: light drop-weight tester ZFG 05 for the dynamic CBR test and the dynamic plate ...
    ... foundation layers of pavements. Control procedures are used to ensure the quality of construction, in accordance with the criteria defined by certain design regulations, specifications, and standards. In addition to compaction control, the basic measure for ensuring the quality of the substrate is the ...

  • A fuzzy-based decision support model for effectiveness evaluation - a case study of examination of bulldozers

    Miloš Tanasijević, Predrag Jovančić, Dejan Ivezić, Uglješa Bugarić, Radiša Đurić (2019)
    Effectiveness evaluation is one of the basic components of engineering asset management and maintenance engineering in general. Effectiveness is an overall concept representing a measurement of quality of service level for the analyzed engineering system. This concept contains a series of partial indicators relating to time in operation and time for maintenance activities, as well as functional properties of the system. This article describes the analysis and structuring of partial indicators, as well as the development of a model ...
    Efikasnost, Fazi zaključivanje, Prikupljanje podataka, Buldozer

  • BaTiO3/NixZn1−xFe2O4 (x = 0, 0.5, 1) Composites Synthesized by Thermal Decomposition: Magnetic, Dielectric and Ferroelectric Properties

    Marija Šuljagić, Ivan Petronijević, Miljana M. Mirković, Aleksandar Kremenović, Adis Džunuzović, Vladimir B. Pavlović, Aleksandra Kalezić-Glišović, Ljubica Andjelković (2023)
    To investigate the influence of spinel structure and sintering temperature on the functional properties of BaTiO3/NixZn1−xFe2O4 (x = 0, 0.5, 1), NiFe2O4, ZnFe2O4, and Ni0.5Zn0.5Fe2O4 were in situ prepared by thermal decomposition onto BaTiO3 surface from acetylacetonate precursors. As-prepared powders were additionally sintered at 1150 °C and 1300 °C. X-ray powder diffraction (XRPD) and scanning electron microscopy (SEM) coupled with electron dispersive spectroscopy (EDS) were used for the detailed examination of phase composition and morphology. The magnetic, dielectric, and ...
    ferroelectric, dielectric properties, magnetic properties, titanate/ferrite composites, phase composition
    ... muhltiferroic materials. This is due to its unique dielectric properties in the tetragonal phase with the P4mm space group [30-—33]. In order to design novel multiferroic composites based on barium titanate, ferrites are one of the ideal candidates due to their attractive magnetic properties [25 ...
    ... [CrossRef] Jayachandran, K.P.; Guedes, J.M.; Rodrigjuues, H.C. Solutions for maximum coupling, in multiferroic magnetoelectric composites by material design. Sci. Rep. 2018, 8, 4866. [CrossRef] Feng, M.; Wang, J.; Hu, J.-M.; Wang, J.; Ma, J.; Li, H.-B.; Shen, Y.; Lin, Y.-H.; Chen, 1.-Q.; Nan, C.-W. Optimizing ...

  • 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
    ... courses 3 3 1 + 0 + 1 + 0 + 0 + 1 27 18 Oil runoff by atmospheric precipitation from roads and loading/unloading sites 3 3 1 + 0 + 1 + 0 + 0 + 1 27 19 Road sprinkling and polluted water runoff into groundwater courses 1 2 0 + 0 + 0 + 0 + 0 + 1 3 20 Atmospheric precipitation runoff from roads into surrounding ...
    ... USA, 2001. 23. Janackovic, G.; Savic, S.; Stankovic, M. Selection and ranking of occupational safety indicators based on fuzzy AHP: Case study in road construction companies. S. Afr. J. Ind. Eng. 2013, 24, 175–189. [CrossRef] 24. Lekic, D.; Jovanovic, M. Report on the State of the Environment in 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 ...

  • Optimizacija površinskog kopa Ciganuša – Škorac

    Vasilije Zejak (2024)
    U radu se govori o značaju optimizacije u savremenom rudarstvu i kako nam to softveri štede vreme, novac i olakšavaju procese planiranja.Konkretno u izradi ovog rada korišćen je softverski paket Whittle.Da bi se optimizacije mogla uspešno sprovesti, potrebno je konstruisati pre svega blok model ležišta kao i definisati niz tehno – ekonomskih parametara. Na osnovu tih podataka definiše se optimalna kontura i dinamika razvoja radova. U skladu sa definisanim podaci i odgovarajućim podlogama definisana je optimalna kontura površinskog kopa Ciganuša ...
    optimizacija, površinski kop Ciganuša - Škorac, blok model, strateško planiranje, optimalna kontura, dinamika razvoja, fazni razvoj
    ... faza razvoja površinskog kopa. Određene generisane optimalne konture, koriste se za definisanje faza razvoja rudarskih radova (eng. Push Back Design). Cilj je da se na osnovu vrednosti blokova (grupisanih u više generisanih kontura) definiše gruba diskretizacija eksploatacionih rezervi (u okviru ...
    ... Projektovanje površinskih kopova (interna skripta). Beograd. 8. Dowd P. A., Onur A.H. (1993). Open-pit optimization - part 1: Optimal open- pit design. Trans. Inst. Min. Metall. 1993,102, A95-A104. 9. Githiria J. (2016). Cut-off grade optimisation to maximise the net present value using whittle ...
    ... Colorado: Society for Mining, Metallugy & Exploration (SME). 105 Optimizacija površinskog kopa Ciganuša – Škorac 11.Kakha, G. H. (2022). Design of Open Pit Mines using 3D Model in Two- element Deposits under Price. International Journal of Engineering, Transactions A: Basics, Vol. 35 No ...

  • Atmospheric exposure vs burying: influences on damage intensity of built-in kersantite in the monument of the Small Staircase (Belgrade, Serbia)

    Nevenka Novaković, Predrag Dabić, Vesna Matović (2023)
    Proučavan je efekat „zatrpanog kamena“ na intenzitet procesa degradacije prisutnih na kersantitu koji je ugrađen u spomenik Malo stepenište. Istraživanja su vršena na uzorcima stene iz kamenoloma i na oštećenim kamenim blokovima ugrađenim u spomenik. Dok su neki delovi stepeništa bili pod zemljom 90 godina, većina kamenih elemenata je bila izložena različitim uslovima sredine i antropogenim uticajima. Urađeno je detaljno mapiranje trenutnog stanja spomenika kako bi se istražio uticaj “zatrpavanja” i kompleksne geometrije spomenika na tip propadanja i variranje ...
    Raspadanje, Indeks oštećenja, Zatrpavanje, Fizička svojstva, Kersantit

  • Application of machine learning for diagnosing the operation of a deep well pump in oil production

    Maja Trikić (2024)
    This paper will thoroughly examine how machine learning can improve the diagnosis of deep well pumps by analyzing the role and function of the pumps, dynamograms, sensor technologies, and diagnostic methods.Our analysis will provide insights into modern techniques and approaches for enhancing the performance and reliability of oil production systems, targeting cost reduction and increased operational efficiency.
    deep well pump, dynamograms, machine learning, diagnostics of operating coditions,Random Forest, XGBoost
    ... surface logs along with well logs and guidelines indicating the quality of load sensor data relative to the well design. Some logs may be ignored if they are not well aligned with the design. Since logs are collected slowly and are similar to each other, changes in conditions do not occur abruptly, ...
    ... driving electric motor. The length of the adjustment rod, number of strokes, and the stroke length of the smooth rod can be adjusted within specific design constraints. Changes in the load on the smooth rod during a cycle are balanced using various methods, with the depicted equipment utilizing balance ...

  • E-Connecting Balkan Languages

    Cvetana Krstev, Ranka Stanković, Duško Vitas, Svetla Koeva (2009)
    In this paper we present a versatile language processing tool that can be successfully used for many Balkan languages. This tool relies for its work on several sophisticated textual and lexical resources that were developed for most of Balkan languages. These resources are based on several de facto standards in natural language processing.
    Query expansion, e-dictionary, wordnet, proper name, aligned text
    ... proper names in natural language applications [16]. This work has been pursued by development of a Serbian version, which finally led to the design and construction of a relational multilingual dictionary of Proper Names, Prolexbase, in a form of relational database [19]. This model is based ...

  • Knowledge and Rule-Based Diacritic Restoration in Serbian

    Cvetana Krstev, Ranka Stanković, Duško Vitas (2018)
    In this paper we present a procedure for the restoration of diacritics in Serbian texts written using the degraded Latin alphabet. The procedure relies on the comprehensive lexical resources for Serbian: the morphological electronic dictionaries, the Corpus of Contemporary Serbian and local grammars. Dictionaries are used to identify possible candidates for the restoration, while the dataobtainedfromSrpKorandlocalgrammarsassistsinmakingadecisionbetween several candidates in cases of ambiguity. The evaluation results reveal that,dependingonthetext,accuracyrangesfrom95.03%to99.36%,whilethe precision (average 98.93%) is always higher than the recall (average 94.94%).
    diacritic restoration, morphological dictionary, corpus, word n-grams, local grammars
    ... wordnet semantic network to russian language. In International Dialog 2003 Workshop, pages 148–154. Gruber, T. R. (1995). Toward principles for the design of ontologies used for knowledge sharing? International journal of human-computer studies, 43(5-6):907–928. Guarino, N. and Welty, C. A. (2009). An ...

  • The state and perspective of the natural gas sector in Serbia

    Dejan Ivezić, Marija Živković, Dušan Danilović, Aleksandar Madžarević, Miloš Tanasijević (2016)
    The strategy of long-term energy development of Serbia identifies an increase of share of natural gas in final energy consumption as one of the main aims. Serbia has signed a strategic agreement with the Russian Federation on cooperation in the oil and gas sector, within which the project South Stream pipeline is planned to be realized. In addition, the Republic of Serbia has signed the Treaty that establishes the Energy Community and accepted the obligation to implement the Energy ...
    Consumption, natural gas, scenarios of development

  • Репозиторијум дигиталних идентификатора објеката – доиФил: изградња, стање и перспективе

    Милош Утвић, Михаило Шкорић (2017)
    Филолошки факултет Универзитета у Београду је крајем јула 2015. године склопио уговор са агенцијом Crossref и тиме стекао право да својим публикацијама додељује дигитални идентификатор објекта (DOI), као и публикацијама других издавача које заступа. Истовремено, у склопу уговора, Филолошки факултет је развио репозиторијум доиФил који за све регистроване публикације чува њихове библиографске метаподатке, хипервезу ка комплетном тексту и сам DOI. После припремних радњи и разраде процеса на којима је заснован рад репозиторијума, у новембру 2016. године је репозиторијум доиФил ...
    DOI, дигитални идентификатор објекта, Crossref, Филолошки факултет
    ... org/ (приступано 1.3.2019). JabRef, Reference Manager. http://jabref.sourceforge.net/ (приступано 1.3.2019). PHP, http://php.net/ W3C. Standards. Web Design and Applications. XML Technology. Transformation https:// www.w3.org/standards/xml/transformation (приступано 1.3.2019). Литература DOI® Handbook ...

  • Application of the VIKOR Method for Selecting the Purpose of Recultivated Terrain after the End of Coal Mining

    Radmila Gaćina, Sanja Bajić, Bojan Dimitrijević, Tomislav Šubaranović, Čedomir Beljić, Dragoljub Bajić (2024)
    reclamation, coal, sustainable development, multi-criteria decision making, VIKOR method

  • Ефикасност дистрибуције и коришћења природног гаса у домаћинствима

    Dejan Brkić (2010-03-30)
    Природни гас ће се у будућности све више користити као енергент за подмиривање грејних потреба становништва у српским градовима. Стога је потребно изнаћи најповољнији начин употребе природног гаса. Природни гас се може користити за подмирење грејних потреба становништва на два дијаметрално супростављена начина, и то директно, тако што би се гас директно уводио у зграде путем дистрибутивног система за снабдевање гасом и затим сагоревао у гасном котлу којим је сваки стан опремљен (гасни дистрибутивни систем), или индиректно, тако што ...
    prirоdni gаs, distribuciја gаsа,grејаnjе, cеvоvоdi, cеvоvоdnе mrеžе,fаktоr trеnjа pri prоtоku fluidа,urbаnizаm
    ...  аутору ове дисертације пружила одличан увид у проблематику. Друга књига  је  Gas  Engineers  Handbook  (1974),  посебно  поглавље  “Distribution  design  for  increased  demand” (Corfield et al 1974). Ове две књиге се могу препоручити свакоме ко жели да се  бави  прстенастим  дистрибутивним  мрежама ...
    ... timization in a district heating  system. Energy Conversion & Management 36(5), 297–314. (на енглеском)  25. Bhave, P.R., Gupta, R. 2004. Optimal design of water distribution networks for fuzzy  demands. Civil Engineering and Environmental Systems 21(4), 229‐245. (на енглеском)  26. Blasius, H. 1913 ...
    ... ision on  heating behavior buildings. Energy Convers Manage 48(8), 2416–2423. (на енглеском)  29. Bombardelli, F.A., Garcia, M.H. 2003. Hydraulic design of large‐diameter pipes. Journal  of Hydraulic Engineering 129(11), 839‐846. (на енглеском)  30. Boulos, P.F., Lansey, K.E., Karney, B.W. 2006. C ...

  • Ефикасност дистрибуције и коришћења природног гаса у домаћинствима

    Dejan Brkić (2010-03-30)
    Природни гас ће се у будућности све више користити као енергент за подмиривање грејних потреба становништва у српским градовима. Стога је потребно изнаћи најповољнији начин употребе природног гаса. Природни гас се може користити за подмирење грејних потреба становништва на два дијаметрално супростављена начина, и то директно, тако што би се гас директно уводио у зграде путем дистрибутивног система за снабдевање гасом и затим сагоревао у гасном котлу којим је сваки стан опремљен (гасни дистрибутивни систем), или индиректно, тако што ...
    prirоdni gаs, distribuciја gаsа,grејаnjе, cеvоvоdi, cеvоvоdnе mrеžе,fаktоr trеnjа pri prоtоku fluidа,urbаnizаm
    ...  аутору ове дисертације пружила одличан увид у проблематику. Друга књига  је  Gas  Engineers  Handbook  (1974),  посебно  поглавље  “Distribution  design  for  increased  demand” (Corfield et al 1974). Ове две књиге се могу препоручити свакоме ко жели да се  бави  прстенастим  дистрибутивним  мрежама ...
    ... timization in a district heating  system. Energy Conversion & Management 36(5), 297–314. (на енглеском)  25. Bhave, P.R., Gupta, R. 2004. Optimal design of water distribution networks for fuzzy  demands. Civil Engineering and Environmental Systems 21(4), 229‐245. (на енглеском)  26. Blasius, H. 1913 ...
    ... ision on  heating behavior buildings. Energy Convers Manage 48(8), 2416–2423. (на енглеском)  29. Bombardelli, F.A., Garcia, M.H. 2003. Hydraulic design of large‐diameter pipes. Journal  of Hydraulic Engineering 129(11), 839‐846. (на енглеском)  30. Boulos, P.F., Lansey, K.E., Karney, B.W. 2006. C ...

  • Development of the Availability Concept by Using Fuzzy Theory with AHP Correction, a Case Study: Bulldozers in the Open-Pit Lignite Mine

    Stevan Đenadić, Dragan Ignjatović, Miloš Tanasijević, Uglješa Bugarić, Ivan Janković, Tomislav Šubaranović (2019)
    Availability is one of the most used terms in maintainability engineering. This concept is used to denote: The quality of service of an engineering system, i.e., machines, weak points’ analysis, asset management, as well as making decisions in the process of life cycle management. Availability is an overall indicator and contains partial indicators that are oriented towards reliability, maintenance, and logistical support. Availability presents a variable value and changes in time and space. Usually, availability is shown as the ...
    raspoloživost, fazi teorija, AHP višekriterijumska analiza, eksperska ocena, buldozer
    ... Generally, dependability as a measure of availability is only a standardized, all-in concept, which describes technical systems from the point of view of design, operation, and maintenance [11]. It is evident that the standard provides a descriptive and linguistic definition of dependability, without formal ...
    ... repair time (t23), which can be time for corrective repairs (t231) and time for preventive repairs (t232). The times t21 and t22 refer to: Defects, design interventions, administrative work, spare parts, tools, skilled labor, etc. The active repair time includes repair, assembly, disassembly, replacement ...

  • Determining the Availability of Continuous Systems at Open Pits Applying Fuzzy Logic

    Miljan Gomilanović, Miloš Tanasijević, Saša Stepanović (2022)
    This work presents a model for determining the availability of continuous systems at open pits by applying fuzzy logic and fuzzy inference systems. The applied model was formed by the synthesis of independent partial indicators of availability. The model is based on an expert system for assessing the availability of continuous mining systems. The availability of the system, as a complex state parameter, is decomposed into the partial indicators, reliability, and convenience of maintenance, and the fuzzy compositions, used ...
    системи, континуални систем експоатације, површински коп, рударство, расположивост, фази логика, max–min композиција, min–max композиција

  • Supstitucione reakcije Pd(II) kompleksa sa biološki važnim biomolekulima

    Aleksandar M. Mijatović, Jovana Bogojeski (2017)
    Kompleksi Pd(II), supstitucione reakcije