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Упит dcterms_creator_txt:Ş. Can Genç

639 items

  • Development of an integrated model for open-pit-mine discontinuous haulage system optimization

    Miodrag Čelebić, Dragoljub Bajić, Sanja Bajić, Mirjana Banković, Duško Torbica, Aleksej Milošević , Dejan Stevanović (2024)
    equipment selection, mine mechanization, expert judgment, linguistic variables, MCDM, FAHP

  • A Description of Morphological Features of Serbian: a Revision using Feature System Declaration

    Cvetana Krstev, Ranka Stanković, Vitas Duško (2010)
    In this paper we discuss some well-known morphological descriptions used in various projects and applications (most notably MULTEXT-East and Unitex) and illustrate the encountered problems on Serbian. We have spotted four groups of problems: the lack of a value for an existing category, the lack of a category, the interdependence of values and categories lacking some description, and the lack of a support for some types of categories. At the same time, various descriptions often describe exactly the same ...
    Morphology, Lexicon, lexical database, Standards for LRs
    ... categories can combine often arises in many languages. For instance, in Serbian, forms for the imperative mood for verbs exist only for the second person in singular and the first and second person in plural. (a) In MULTEXT-East v. 3.0 (and previous versions) necessary information can be given in ...
    ... y solution. 1. Motivation Description of morphological features of a language is a prerequisite for many NLP applications. This description can be simple or complex depending both on a language and application in question. Considerable efforts in standardizing such a description were undertaken ...
    ... inadequacies of existing morphological descriptions for Serbian on MULTEXT-East, serving as de facto standard for involved languages for many years. They can be grouped in several categories. (a) The lack of a value for an existing category. This problem occurred, for instance, with the grammatical category ...

  • Regionalna karakterizacija karstnih podzemnih voda dela centralnog Balkana u funkciji njihovog održivog korišćenja i menadžmenta

    Veljko J. Marinović (2022)
    Karstne podzemne vode koristi oko 700 miliona ljudi na svetu, čime je njihov značaj za svetsko stanovništvo nemerljiv. U sklopu doktorske disertacije vršena su istraživanja i analize karstnih sistema dela centralnog Balkana (Srbije, Crne Gore i Savskog sliva Bosne i Hercegovine), kako bi se evaluirao ovaj dragoceni resurs. Analize su vršene na primerima karstnih sistema vrela Perućac, Seljašnica, Mokra i Mlava (Srbija), Oko Bijele i Rijeka Crnojevića (Crna Gora) i vrelo Bosne (Bosna i Hercegovina), kao i na regionalnom ...
    karstni sistem, podzemna voda, pritisci na kvantitet i kvalitet, menadžment podzemnih vodnih resursa

  • 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
    ... For instance there can exist different expressions for the same mathematical content, with the same meaning such as: 1𝑥 = 1 𝑥⁄ = 1 𝑥⁄ = 𝑥−1 On the other hand, an expression can represent different content depending on the context, such as the number ϖ (Pi), which can present the transcendent ...
    ... Such challenges are addressed by augmented annotation and search. During the processing of mathematical formulae, augmented annotation can be realized, which can cover different expressions of the same formula. 4. CORPUS PROCESSING RESULTS Mathematical terminology in Serbian is unsatisfactorily ...
    ... efficient concordance system which can process query patterns specified both at the character level (specifying a form of an individual word or an annotation) and at the token level (specifying syntactic relationships between tokens). Through CQP web users can both specify query patterns and ...

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

    Miloš Gligorić, Jelena Majstorović, Suzana Lutovac (2018)
    ... device Using this instrument, only longitudinal elastic waves propagation velocities can be measured. Based on these elastic waves, we have analyzed the properties of isotropic and anisotropic samples. Anisotropy can be expressed quantitatively by comparing certain characteristics such as physical ...
    ... and fracture related anisotropy in different rock types (Melaku, 2007). Ultrasonic velocities are related to the properties of the stone and they can thus be applied to assess the quality of the stones, to detect any presence of microscopic fissuring and cracks, to evaluate the material decay and ...
    ... method. Elastic waves in rock or sample are representing deformation propagation, so depending of type of deformations, waves of different types can be caused: a) longitudinal waves b) transversal waves Today, ultrasonic waves with frequency over 20 000 Hz are applied in elastic properties ...

  • A comparison between ARIMA, LSTM, ARIMA-LSTM and SSA for cross-border rail freight traffic forecasting: the case of Alpine-Western Balkan Rail Freight Corridor

    Miloš Milenković, Miloš Gligorić, Nebojša Bojović, Zoran Gligorić (2023)
    železnica, prekogranični teretni saobraćaj, ARIMA, LSTM, SSA

  • Availability as a dimension of energy security in the Republic of Serbia

    Boban Pavlović, Dejan Ivezić (2016)
    There is a range of modern approaches and models in literature for the evaluation and determination of energy security, which are based on different parameters and indicators. For most of them, a common characteristic is emphasizing the avail ability of energy, as an important dimension for ensuring energy security. In this paper, concise overview of Serbian energy sectors is given and appropriate energy indicators are defined and determined. Selected indicators provide insight into the main components that characterize availability ...
    raspoloživost energije, energetski indikatori, energetska bezbednost
    ... natural gas distribution systems, etc. [8]. Self-sufficiency Self-sufficiency (SS) can be defined as the ability of energy system to rely on indige- nous reserves and resources in energy production. It can be measured by the ration of reserves to annual production (SS1). The purpose of this ...
    ... with the energy price being at a level that will not adversely affect the eco- nomic performance of the economy. Thus, there are several factors that can influence the energy security [7]: – the availability of reserves, both indigenously and by foreign suppliers, – the ability of an economy to acquire ...
    ... geopolitical relations. In order to provide a framework for identifying, measuring and managing vulnerabili- ties of an energy system, energy security can be defined as a low level of vulnerability of the vital components of the energy system, i. e. energy sources, infrastructure, technological development ...

  • 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

  • Preliminary regional landslide susceptibility assessment using limited data

    Igor Peshevski, Milorad Jovanovski, Biljana Abolmasov, Jovan Papic, Uroš Đurić, Miloš Marjanović, Ubydul Haque, Natasha Nedelkovska (2019)
    In this paper a heuristic approach for preliminary regional landslide susceptibility assessment using limited amount of data is presented. It is called arbitrary polynomial method and takes into account 5 landslide conditioning parameters: lithology, slope inclination, average annual rainfall, land use and maximum expected seismic intensity. According to the method, in the first stage, a gradation is performed for each of the carefully selected conditioning parameters by assigning so called rating points to the grid cells on which the ...
    klizišta, podložnost
    ... noted once again that, even methods such as those presented in this paper can be used only as a first estima- tion of landslide susceptibility, and one can argue that they are based mostly on engineering judgment. They can however pro- vide indications of the aspects that deserve attention while allow- ...
    ... map of landslides of a particular region, the validation process can then be conducted. In order to investigate the sensitivity of the basic landslide susceptibility models (TLSR models) obtained, each conditional parameter rating can be additionally weighted by so called sen- sitivity coefficients ...
    ... of ratings and sensitivity coefficients. It can be ar- gued that this approach translates the susceptibility analysis into a trial and error exercise, making it highly subjective. However, with careful analysis of all the available data, weightings can be reasonably well selected, which will ultimately ...

  • Threshold-induced correlations in the Random Field Ising Model

    Sanja Janićević, Dragutin Jovković, Lasse Laurson, Đorđe Spasojević (2018)
    Multidisciplinary
    ... waiting time Tw,0 increases with Vth. �is is shown in the bottom inset of Fig. 2a, where one can see that the relation ∼ δT Vw,0 th is satis�ed with δ ≈ 1.30 ± 0.02. Regarding the shape of distributions D(Tw), one can see that the power law part appears with the increase of threshold, indicating the onset ...
    ... waiting time T,,o increases with V,,. This is shown in the bottom inset of Fig. 2a, where one can see that the relation T,, . ~ ‘is satisfied with 6~ 1.30 + 0.02. Regarding the shape of distributions D(T,,), one can see that the power law part appears with the increase of threshold, indicating the onset ...
    ... 0. Essentially the same can be said for discrete signals sampled at discrete moments of time, provided that they are continuously (e.g. linearly) extrapolated to all moments of time throughout the signal duration, like it is done here with the RFIM signals. �e avalanches can be classi�ed into types ...

  • Analysis Of the Process Of Carbon Capture Utilization And Storage In Underground Reservoirs

    John Nyame (2024)
    The importance of mitigating the effects of global climate change has necessitated an in-depth exploration of innovative strategies to reduce carbon dioxide (CO2) emissions. Among these strategies, Carbon Capture, Utilization, and Storage (CCUS) has emerged as a promising and transformative solution. This master thesis delves into the diverse realm of CCUS processes, aiming to unravel the positives challenges, and opportunities within this dynamic field. The analysis begins with a systematic examination of carbon capture technologies, encompassing post-combustion, pre-combustion, and oxy-fuel combustion ...
    Carbon Capture, Utilization and Storage
    ... removal of the ions from the water phase. The products sodium bicarbonate and ammonium chloride are heavy and, thus, can easily settle to the bottom of the tank. The latter NH4CI can be recycled by thermal operations with calcium oxide or be used as a feedstock for the synthesis of ammonia and chlorine ...
    ... the best route in CO» utilization. Methane, methanol, syngas, and alkanes are some of the compounds that can be produced by utilizing captured CO» as a feedstock [13]. The fuel produced can be used in various sectors, including fuel cells, power plants, and transportation. CO> conversion requires ...
    ... placement of CO» in underground formations. Potential storage formations can occur in onshore and offshore formations, and each type of geologic formation presents different risks and rewards. CO» accumulation naturally can be found in geological sites round the world, mostly in sedimentary basins ...

  • Electronic Dictionaries - from File System to lemon Based Lexical Database

    Ranka Stanković, Cvetana Krstev, Biljana Lazić, Mihailo Škorić (2018)
    In this paper we discuss some well-known morphological descriptions used in various projects and applications (most notably MULTEXT-East and Unitex) and illustrate the encountered problems on Serbian. We have spotted four groups of problems: the lack of a value for an existing category, the lack of a category, the interdependence of values and categories lacking some description, and the lack of a support for some types of categories. At the same time, various descriptions often describe exactly the same ...
    ... so that the dictionary of forms containing all nec- essary grammatical information can be generated from it, and subsequently used in various NLP tasks (Courtois and Silberztein, 1990). A dictionary of lemmas can con- tain simple-word lemmas (DELAS) or multi-word lemmas (DELACF), producing, respectively ...
    ... attribute can belong to a closed set (e.g. +CC2=RS is a two character coun- try code marker assigned, for instance, to geopolitical names), or to an open set (e.g. +Val=Vaughn is as- signed to a surname Von, Serbian transcription of the English surname Vaughn). Semantically, markers can be of various ...
    ... indicates that the suf- fix -rati can be substituted in the lemma afirmirati by the suffix -sati to produce the lemma afirmisati, which is recorded in e-dictionaries and has an inverse marker +VAR=SatiRati assigned to it. The marker +VAR=H0 indicates that an h can be deleted in the lemma hleb to ...

  • Fault type assessment based on vertical gravity gradient anomalies – advantages and limitations

    Ivana Vasiljević, Snežana Ignjatović, Branislav Sretković (2024)
    The type of dip-slip faults can be assessed based on the analysis of vertical gravity gradients. Theoretically, just a simple comparation of the gradient extreme values can give us an answer whether the fault is normal or reverse (thrust). Practical application of this method is far more complicated and the results depend on a number of parameters, such as a complexity of geological setting, the quality of gravity data, dip angle and displacement of the fault, density contrast, etc. ...
    dip-slip faults, vertical gravity gradients, field data analysis
    ... e-mail: ivana.vasiljevicorgf.bg.ac.rs Abstract The type of dip-slip faults can be assessed based on the analysis of vertical gravity gradients. Theoretically, just a simple comparation of the gradient extreme values can give us an answer Whether the fault is normal or reverse (thrust). Practical ...
    ... gradient data have better resolution and recommend the use of the gradiometers. Various numerical methods for the calculation of gravity gradients can be applied, but the problem is that they often produce different results and it is important to select the appropriate method. 86 METHOD OF INVESTIGA ...
    ... the case of sufficient vertical displacement along the dip-slip fault, that creates detectable latera! rock density contrast, type of the fault can be assessed based on visual and/or numerical analysis of VGG curves and maps. Along the profile, placed perpendicularly to the fault strike, VGG ...

  • Numerical modeling of Selanac debris flow propagation using SPH code

    Jelka Krušić, Biljana Abolmasov, Miloš Marjanović, Manuel Pastor, Saeid M. Tayyebi (2021)
    The Selanac debris flow is a very huge event triggered after extreme rainfall caused by Cyclone Tamara activity in the Republic of Serbia in May 2014. The Selanac case study was already modelling in different programs using Voellmy rheology assumptions like RAMMS software. In this paper research are focusing particularly on the process of debris flowing from initiation zone to main deposition area using Geoflow SPH two-phase model considering frictional rheology law. Main rheological parameters are back-calculated using also ...
    debris flow, modelling, SPH code, DEM
    ... with either water or mud. If the shear resistance of the fluid phase can be neglected, the stress tensor in the mixture can be decomposed into a ‘pore pressure’ and an effective stress, and the mechanical behavior of the mixture can be described by a system of differential equations governing the ...
    ... (Zienkiewicz and Schiomi, 1984) and it can be used with a variety of rheological laws and pore water pressure treatments. Two different meshes will be used, one to describe the terrain topography while the other consist of SPH nodes. Detailed discretization of equations can be found in Pastor et al. (2009) ...
    ... effect it can be concluded that the simulation model is capable to obtain reasonable results and properly back-calculate the deposition depth and runout distance. However, Selanačka river had a significant influence on process which was not considered in the simulation models. It can be supposed ...

  • SASA Dictionary as the Gold Standard for Good Dictionary Examples for Serbian

    Ranka Stanković, Branislava Šandrih, Rada Stijović, Cvetana Krstev, Duško Vitas, Aleksandra Marković (2019)
    У овом раду представљамо модел за избор добрих примера за речник српског језика и развој иницијалних компоненти модела. Метода која се користи заснива се на детаљној анализи различитих лексичких и синтактичких карактеристика у корпусу састављених од примера из пет дигитализованих свезака речника САНУ. Почетни скуп функција био је инспирисан сличним приступом и за друге језике. Дистрибуција карактеристика примера из овог корпуса упоређује се са карактеристиком дистрибуције узорака реченица ексцерпираних из корпуса који садрже различите текстове. Анализа је показала да ...
    Српски, добри примери из речника, аутоматизација израде речника, издвајање својстава, Машинско учење
    ... examples derived from the SASA dictionary is a dataset of good dictionary examples that can serve various purposes: it can be used to procure examples for the SASA dictionary as well as for new dictionaries, but it can also be used for the development of a machine system for example selection. From ...
    ... From the analysis of samples of dictionary examples, metrics and example feature distribution can be derived, which can reduce the search space for relevant examples, for example, by setting the upper and lower limits for sentence length, based on the 251 Proceedings of eLex 2019 most common ...
    ... advisable to use more than one example of the same author. An exception to this rule can be made if there are not enough examples by other authors. Only a few linguistic criteria are mentioned in the Style Guide. They can be paraphrased as follows: 1) each chosen example should show different relations ...

  • The number of unimodular roots of some reciprocal polynomials

    Dragan Stankov (2020)
    We introduce a sequence P2n of monic reciprocal polynomials with integer coefficients having the central coefficients fixed. We prove that the ratio between number of nonunimodular roots of P2n and its degree d has a limit when d tends to infinity. We present an algorithm for calculation the limit and a numerical method for its approximation. If P2n is the sum of a fixed number of monomials we determine the central coefficients such that the ratio has the minimal limit. ...
    Algebraic integer, the house of algebraic integer, maximal modulus, reciprocal polynomial, primitive polynomial, Schinzel-Zassenhaus conjecture, Mahler measure, method of least squares, cyclotomic polynomials

  • A Twitter Corpus and Lexicon for Abusive Speech Detection in Serbian

    Danka Jokić, Ranka Stanković, Cvetana Krstev, Branislava Šandrih (2021)
    Uvredljivi govor na društvenim medijima, uključujući psovke, pogrdni govor i govor mržnje, dostigao je nivo pandemije. Sistem koji bi bio u stanju da detektuje takve tekstove mogao bi da pomogne da internet i društveni mediji postanu bolji virtuelni prostor sa više poštovanja. Istraživanja i komercijalna primena u ovoj oblasti do sada su bili fokusirani uglavnom na engleski jezik. Ovaj rad predstavlja rad na izgradnji AbCoSER-a, prvog korpusa uvredljivog govora na srpskom jeziku. Korpus se sastoji od 6.436 ručno označenih ...
    uvredljivi jezik, govor mržnje, srpski, tviter, leksikon, korpus
    ... classification can be done in several steps. Traditional machine learning can also be used at every step, which in the case of a smaller number of class examples gives better results than deep learning [31]. Another advantage is a simpler structure of the annotation decision tree, which can contribute to ...
    ... collect examples of online hate speech in all languages that can be used as trigger words for hate speech detection ([46, 41, 14, 13]). However, detecting hate speech by simply filtering by keywords is not a satisfactory solution, as interpretation can be influenced by the domain of the conversation, the context ...
    ... prepared the guidelines for annotators in the same format (shown in Figure 2). One can see from the decision tree that a tweet marked as abusive has to be tested for each subcategory, since, as mentioned earlier, one tweet can belong to one or more subcategories. Annotators had a tab in their annotation interface ...

  • Production information system of the Pljevlja coal mine

    Božo Kolonja, Ranka Stanković, Filip Vuković (2018)

  • 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
    ... more. For text processing simple string operations can be used, but underlying e- dictionaries enable much more sophisticated approaches. Besides simple regular expressions, graphs that represent the visualization of finite state automata (FSA) can be used for complex queries. Moreover, finite state ...
    ... output) can be used for text transformation. The concept of e-dictionaries and software that enables their effective use was developed at LADL (Laboratoire d' Automatique Documentaire et Linguistique), under the direction of its director, Maurice Gross. [12] With Unitex, user can develop ...
    ... (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 situation as it can prove useful both for linguists working in corpus linguistics and computer scientists developing NLP applications. The participant will become familiar ...

  • Pre-failure deformation monitoring as rockfall prediction tool

    Miloš Marjanović, Biljana Abolmasov, Zoran Berisavljević, Marko Pejić, Petko Vranić (2021)
    General Engineering
    ... should be, and data are usually scarce. Modeling and simulation is another tool that can be used to estimate some of the rockfall parameters and compensate for the lack of specific data [1]. Suspicious rock faces can be monitored for longer periods, using multiple monitoring systems (primarily Terrestrial ...
    ... research is that TLS successfully captures cm displacements and can be used to anticipate the future events. In addition, mm displacements, are more oscillating in respect to temperature and other atmospheric agents, meaning that TLS can be fully used to monitor significant events. Using all these ...
    ... all exhibited displacements can be observed in X axis, instead of using total vectors. Thus, the threshold displacement is not the total vector but its X component, which is more practical for systematic application of the approach. If applied systematically, it can provide excellent information ...