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Упит dcterms_subject_txt:space group

372 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
    ... materials at higher temperatures). Municipal waste moisture content can be observed based on the mechanism of fluid retention within the pore space of waste: a) moisture within waste particles 1.e. moisture in pores inside particles, b) moisture between particles 1.c. in pores between particles ...
    ... moisture that waste particles with low hydraulic conductivity retain (Figure 4). EO a) b) c) Fig. 4. Different types of fluid within the pore space of waste (Zornberg et al., 1999). Very wide intervals of municipal waste moisture can be found in the literature. As a rule, municipal waste ...
    ... Phenomena in Environmental Geotechnics (CPEG) — from theoretical and experimental research to practical applications, CRC Press, Taylor & Francis Group, Torino, taly, 347-354. 1) Rakić D., Basarić I, Berisavljević Z., Berisavljević D. (2016):Geotechnical characteristics of industrial waste slag ...

  • Regional Slope Stability Analysis in Landslide Hazard Assessment Context, North Macedonia Example

    Miloš Marjanović, Biljana Abolmasov, Igor Peshevski, James Reeves, Irena Georgievska (2020)

  • The analysis of the geothermal energy capacity for power generation in Serbia

    Jana Stojković, Goran Marinković, Petar Papić, Mihailo Milivojević, Maja Todorović, Marina Ćuk (2013)
    Renewable Energy, Sustainability and the Environment
    ... reduced from acid to basic and ultrabasic magmatic rocks. Silicon concentration is also high in granite pegmatites. Plagioclases are the commonest group of silicate minerals in igneous rocks with the highest proportion of silica in the continental crust. Alkali feldspar and quartz also have large d ...

  • Investigation of quantitative indicators of anisotropy based on longitudinal elastic waves propagation velocities with uncertainty

    Miloš Gligorić, Jelena Majstorović, Suzana Lutovac (2018)
    ... Gotland sandstone by use of ultrasound pulse velocity measurements. In: Heritage, weathering and conservation. 2nd ed. London: Taylor and Francis Group plc; pp. 749-756 PETRUŽÁLEK M. et al. (2008) Changes of anisotropy of p-wave velocity propagation during deformation process of rock samples. ...

  • The influence of alkyl polyglucosides (and highly ethoxylated alcohol boosters) on the phase behavior of a water/toluene/technical alkyl polyethoxylate microemulsion system

    Marija Ilic, Franz-Hubert Haegel, Vesna Pavelkic, Dragan Zlatanovic, Snezana Nikolic-Mandic, Aleksandar Lolic, Zoran Nedic (2016)
    The influence of additives (alkyl polyglucoside, Glucopon 600 CS UP and alcohol ethoxylate C18E100) on the behavior of the water/toluene/Lutensol ON 50 (technical oxoalcohol, i-C10E5) microemulsion system as a function of temperature and composition has been investigated. The phase behavior of the microemulsions was determined by vertical sections through the Gibbs phase prism (fish-like phase diagrams). Alkyl polyglucoside shifts the one phase region to lower temperatures compared with water/toluene/Lutensol ON 50 mixtures. This is contrary to the expectation, considering ...
    микроемулзија, толуен, алкил полиглукозид, оксоалкохол етоксилат, појачивач ефикасности, „fish“ дијаграми
    ... (CE) are typically used. These surf- actants contain / carbon atoms in the hydrophobic alkyl chain and / ethoxy units in the hydrophilic head- group. The phase behavior of microemulsion systems containing alkyl polyglucoside has been studied by some authors [21-23]. In the last decades, a lot ...

  • An Approach to Efficient Processing of Multi-Word Units

    Cvetana Krstev, Ivan Obradović, Ranka Stanković, Duško Vitas (2013)
    Efficient processing of Multi-Word Units in the course of development of morphological MWU dictionaries is not easy to achieve, especially when languages with complex morphological structures are concerned, such as Serbian. Manual development of this type of dictionaries is a tedious and extremely slow process. To alleviate this problem we turned to our multipurpose software tool, dubbed LeXimir, in the production of lemmas for e-dictionaries of multi-word units. In addition to that, we developed a procedure aimed at making ...
    Natural Language Processing, Grammatical Category, Lexical Representation, MWU, multi-word unit
    ... become values of variables: in the case of petokraka zvezda values of variables become $1=petokraka, $2=<space>, $3=zvezda while in the case of Farenhajtov stepen they are $1=Farenhajtov, $2=<space>, $3=ste- pen. If a simple pattern of the form <$i > appears in the inflectional graph it means 4 Cvetana ...
    ... zvezda and Farenhajtov stepen that the corresponding token is recopied in all MWU inflectional forms as it is — in our examples the second token, a space, is reproduced in all inflectional forms. A token pattern can be followed by one or more equations of the type Gram- matical feature=value. In that ...
    ... processed MWU and/or match its components with applied dictionaries of simple words. Orthographic conditions check separators used between words (a space is presumed by default) and capi- talization of components — due to the condition Cond="$PRE" in the first set of special conditions in Example 1 ...

  • Srbija u OneGeology Europe

    Danka Blagojević, Ranka Stanković, Petar Stejić, Velizar Nikolić (2014)
    Геолошки завод Србије као носилац Пројекта ОneGeologyEurope заједно са Рударско геолошким факултетом и Министарством за природне ресурсе, рударство и просторно планирање су се укључили у међународни Пројекат OneGeology Europe у мају 2013. године у већ поодмаклој фази израде Пројекта. До краја 2013. године испунили су завршене активности које треба да доведу до пуноправног укључења у Пројекат чиме је Република Србија нашла своје место на Геолошкој карти Европе 1:1М. Геолошка карта Србије 1:1М представља компилациону односно поједностављену верзију ОГК 1:500 ...
    OneGeologyEurope, метаподаци, хармонизација података, вишејезични мета-информациони систем
    ... International Conference on Language Resources and Evaluation, LREC 2010, Valetta, Malta, 2283-2287. Stephen M. R. and CGI Interoperability Working Group (2007): GeoSciML – A GML Application for Geoscience Information Interchange, DIGITAL MAPPING TECHNIQUES ‘06, 47-59, http://pubs.usgs.gov/of/200 ...
    ... International Conference on Language Resources and Evaluation, LREC 2010, Valetta, Malta, 2283-2287. Stephen M. R. and CGI Interoperability Working Group (2007): GeoSciML – A GML Application for Geoscience Information Interchange, DIGITAL MAPPING TECHNIQUES ‘06, 47-59, http://pubs.usgs.gov/of/2007/12 ...

  • A survey of greenhouse gases production in central European lignites

    Anna Pytlak, Anna Szafranek-Nakonieczna, Weronika Goraj, Izabela Śnieżyńska, Aleksandra Krążała, Artur Banach, Ivica Ristović, Mirosław Słowakiewicz, Zofia Stępniewska (2021)
    Lignit, Gasovi sa efektom staklene bašte, Ugljen dioksid, Metan, Azotni oksid
    ... were clustered together along Eh-NO3 vector. Points representing samples characterized by the highest Eh and N-NO3 values (KNN-W2) formed a separate group. One of the ap- parently dissimilar points were those denoting lignite from the Kolubara mine (KBR). The distinctiveness of this lignite may result ...
    ... Takemura, T., Zhan, H., 2013. Anthropogenic and natural radiative forcing. Climate Change 2013: The Physi- cal Science Basis. Contribution of Working Group I to the Fifth Assessment Report of the Intergovernmental Panel on Climate Change. Cambridge Univ. Press, Cambridge, United Kingdom New York, NY, USA ...

  • Surface functional groups and degree of carbonization of selected chars from different processes and feedstock

    Marija Ilić, Franz-Hubert Haegel, Aleksandar Lolić, Zoran Nedić, Tomislav Tosti, Ivana Sredović Ignjatović, Andreas Linden, Nicolai D. Jablonowski, Heinrich Hartmann (2022)
    The knowledge ofthe structural and chemical properties of biochars is decisive for their application as technical products. For this reason, methods for the characterization of biochars that are generally applicable and allow quality control are highly desired. Several methods that have shown potential in other studies were used to investigate two activated carbons and seven biochars from different processes and feedstock. The chars were chosen to cover a wide range of chemical composition and structural properties as a hardness ...
    Biougalj, različiti procesi dobijanja, različite sirovine, površinski aktivne grupe, x-ray, FT-IR,XPS
    ... carbonization of selected chars order to remove air and ensure complete saturation. The rectangular sample holder was not completely filled. The space outside the bronze electrodes was only filled with electrolyte and the filling height of the solid material was about 2.5 cm. The exact height was ...
    ... representative than the composition found for the ground material, because it might not be representative for the surface functional groups in the pore space. XPS can also not differentiate between alcohols and phenols and requires expensive equipment. It is there- fore no method for quality control, ...
    ... 1021/acsomega.8b00523 PMID: 31458859 Singh B, Camps-Arbestain M, Lehmann J. Biochar: A guide to analytical methods. 1sted. CRC Press/Taylor Francis Group, LLC, Boca Raton, FL, USA; 2017. https://doi.org/10.1111/sum.12389. Ghodake GS, Shinde SK, Kadam AA, Saratale RG, Saratale GD, Kumar M, et al. Review ...

  • Towards a Mining Equipment Ontology

    Ranka Stanković, Ivan Obradović, Olivera Kitanović, Ljiljana Kolonja (2012)
    ... classification of equipment types and their groupings, while the right hand size depicts parameters assigned to a specific type of equipment, or its group component. For each parameter assigned to the type of equipment, a data type is defined (numerical or textual), the parameter measuring unit (m, kW ...

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

    Ivan Obradović, Ranka Stanković, Olivera Kitanović, Jelena Prodanović (2011)
    ... of the exercises contain database and GIS modeling tasks aimed at solving problems related to different topics. For example, this year a student group created a GIS of the FMG building. Students were given scanned raster drawings of parts of the building, which they were asked to georeference ...

  • 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
    ... M.R.; Nabipour, M. The effect of step on the hydraulic characteristics of the subcritical free surface flow in conveyance tunnel. Tunn. Undergr. Space Technol. 2012, 28, 212–217. [CrossRef] 7. Hassani, A.N.; Katibeh, H.; Farhadian, H. Numerical analysis of steady-state groundwater inflow into Tabriz ...
    ... Uromeihy, A.; Sharifzadeh, M. Evaluation of hight lokal groundwater inflow to a rock tunnel by charactization of geological features. Tunn. Undergr. Space Technol. 2011, 26, 364–373. [CrossRef] 9. Chen, Y.F.; Hong, J.M.; Zheng, H.K.; Li, Y.; Hu, R. Evaluation of groundwater leakage into a drainage tunnel ...
    ... 12. Andjelković, V.; Lazarević, Ž.; Nedović, V.; Stojanović, Z. Application of the pressure grouting in the hydraulic tunnels. Tunn. Undergr. Space Technol. 2013, 37, 165–179. [CrossRef] 13. EN 206-1. European Standardization Committee, Concrete—Part 1: Specification, Performance, Production and ...

  • Primena AHP и WoEmetode u proceni podložnosti terena na kliženje za područje opštine Krupanj

    Biljana Abolmasov, Jelka Krušić, Katarina Andrejev, Miloš Marjanović, Ranka Stanković, Uroš Đurić (2017)
    ... American Symposium on Landslides and Engineered Slopes, Banff, Canada, 3-8 June, 2012. Eds,Eberhardt E, Froese C, Turner K, Leroueil S, Taylor&Francis Group, London, Vol 1, pp. 47-58, 2012. [14] Kayastha P, Dhital MR, De Smedt F. Application of the analytical hierarchy process (AHP) for landslide su ...

  • Mine surveying works for the purpose of excavating the remaining reserves of bauxite in the deposit of “Podbracan”

    Aleksandar Milutinović, Aleksandar Ganić, Thamer Rayes Diyab, Rade Tokalić, Meri Ganić (2015)
    ... 2. Geology of the "podbracan" bauxite deposit Bauxite deposit "Podbracan" has a surface of approximately 523,000m2 and is classi�ed as the �rst group of red bauxite deposits by its structure- morphological type and economic importance. The ore body was created during the continental phase of devel- ...

  • A Fuzzy Expert Model for Availability Evaluation

    Dejan Ivezić, Miloš Tanasijević, Predrag Jovančić, Radiša Đurić (2019)
    Each technical system within itself carries the great potential danger of possible occurrence of failure and damages. Mining machines are characteristic by great investment values, costs of unplanned shutdowns, complex working conditions, and environment and workers hazards. Systematic monitoring of the mining machinery is of great importance for the management of the mining companies. Availability is the overall concept of quality of service. Includes information regard to operating state, an idle state, a standby state and shut down. The ...
    raspoloživost, ekspertski sistem, fazi teorija, buldozeri
    ... - Outcomes are grouped according to their values Ωc, namely the size of j. - Find the MAXimum between previously identified minimums for each group of outcomes. The maximum which corresponding the jth value is calculated following the equations: MAXj = max {MINo}, for every j (5) The assessment ...

  • Application of the Fuzzy Model in the Evaluation and Selection of Hydraulic Excavators on Open-Pit Lignite Mine

    Stevan Đenadić, Miloš Tanasijević, Vladimir Milisavljević, Dragan Ignjatović, Predrag Jovančić (2021)
    The production of lignite in large open-pit mines is mainly performed with continuously operating equipment, where bucket-wheel excavators, bucket-chain excavators, belt conveyors, and spreaders are the basic machines. Smaller machines, usually of discontinuous operating nature, are commonly categorized as auxiliary machines. This paper presents the research related to the analysis of auxiliary machine parameters with the case study for a hydraulic excavator. The purpose of the analysis was to develop a model of rating quality of service of the ...
    Fuzzy theory, hydraulic excavator, selection, quality of service, asset management

  • Linear-motor plunger pump increases lifting efficiency

    Bojan Martinović, Dušan Đekić, Dušan Danilović, Pavel Isaev (2022)
    plunger, linear, motor, pumps

  • Improving Document Retrieval in Large Domain Specific Textual Databases Using Lexical Resources

    Ranka Stanković, Cvetana Krstev, Ivan Obradović, Olivera Kitanović (2017)
    Large collections of textual documents represent an example of big data that requires the solution of three basic problems: the representation of documents, the representation of information needs and the matching of the two representations. This paper outlines the introduction of document indexing as a possible solution to document representation. Documents within a large textual database developed for geological projects in the Republic of Serbia for many years were indexed using methods developed within digital humanities: bag-of-words and named ...
    ... purposes. Relevant documents are retrieved and ranked upon a user query on basis of this index, using an approximate matching model, such as the vector space model, based on weight coefficients of terms, or the probabilistic model, based on relevance feedback [22]. When language processing methods and techniques ...
    ... formula for ranking with cosine normalization, tfc nfc which uses a normalized tf factor for terms of the query (as different mapping of the vector space of documents and queries is more effi- cient), lnc ltc where the linear function is replaced by the logarithm, and finally the lnu ltu which uses the ...
    ... especially important in the case of languages with rich morphology, such as Serbian, and South-Slavic languages in general. Although Serbian belongs to the group of less-resourced languages, in which comprehensive lexical resources and language technology tools are still lacking or have not reached full maturity ...

  • Pleistocene rhinoceros from Bogovina Cave: the first report of Stephanorhinus hundsheimensis Toula, 1902 (Mammalia, Rhinocerotidae) from Serbia

    Predrag Radović, Miloš Radonjić, Emmanuel Billia (2020)
    Finds of Pleistocene rhinoceros are rare in Serbia, and only one species (the woolly rhinoceros Coelodonta antiquitatis Blumenbach, 1799) has been reported so far. The current paper presents the dental material of an extinct so-called Hundsheim rhinoceros, Stephanorhinus hundsheimensis Toula, 1902 from Bogovina Cave (East ern Serbia). Both the morphological and metric characteristics of the teeth are consis tent with the attribution to S. hundsheimensis. Unfortunately, the rhinoceros material originated from an uncertain geological context, so there is no ...
    rhinoceros, Stephanorhinus hundsheimensis, Serbia
    ... horse. Furthermore, the size of molar (L = 33.8 mm, W = 14.7 mm; measured at the occlu- sal surface, excluding cement) is comparable to the large-sized group of caballoid horses of Forstén and Dimitrijević (2004), well-known from the caves and rock shelters of the Central Balkans. Indeterminate bovid (Bovidae) ...
    ... 77 Myr old site of Dmanisi (South Caucasus, Georgia) conducted by Cappellini et al. (2019) demonstrated that this indi- vidual represents a sister group to the clade formed by Coelodonta antiquitatis and S. kirchber- gensis, implying that the genus Stephanorhinus includes at least two distinct evolutionary ...

  • 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
    ... 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 coefficient of time use of the machine. This approach is not good enough because it does not go into the structure ...
    ... 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 coefficient of time use of the machine. This approach is not good enough because it does not go into the structure ...
    ... , (12) for each o = 1 to O (vi) The outcomes are grouped according to Jc value. The number of such groups can be 0 to n. (vii) In each outcome group (vi), the maximum MX value is requested among the identified minima (v). The maximum that corresponds to jth values is calculated as: MX j = max{MN1 ...