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Упит dcterms_subject_txt:Logical model

798 items

  • Optimisation of underground mine decline development system using genetic algorithm

    Zoran Gligorić, Aleksandar Ganić, Rade Tokalić, Aleksandar Milutinović (2014)
    ... (Brazil et al. 2003; 2008). In our model we defined spatial network by nonlinear constrained objective function representing the cost of mine development and ore haulage. To find the minimum value of the objective function we use Genetic algorithm. 2. THE MODEL OF A DECLINE DEVELOPMENT SYSTEM ...
    ... Such network is defined by adequate objective function. Optimisation model is based on the minimisation of the nonlinear constrained objective function representing the cost of mine development and ore haulage. The model is not closed and allows the underground mining engineers to incorporate ...
    ... sections. Access infrastructure designing can be treated as spanning the spatial network which will connect all main terminals (points). In our model we defined spatial network by adequate nonlinear constrained objective function representing the cost of mine development and ore haulage. To find ...

  • From DELA Based Dictionary to Leximirka Lexical Database

    Biljana Lazić, Mihailo Škorić (2020)
    In this paper, we will present an approach in transforming Serbian language Morphological dictionaries from a DELA text format to a lexical database dubbed Leximirka. Considering the benefits of storing data within a database when compared to storing them in textual documents, we will outline some of the functionality that the database has made possible. We will also show how hand-made rules that use category labels lexical entries are marked with can be used to link lexical entries. ...
    Morfološki rečnici, jezički resursi, Leksimirka
    ... adequate markers. 3.2 Leximirka’s lexicographic database model The lexicographic database model of Leximirka, shown in Figure 1, is guided by the Lemon, LMF and Data Category Registry catalog (Stanković et al., 2018). The implemented model provides the ability to store lexico- graphic information ...
    ... the theory of finite-state automata, namely on morphological and local grammars in the form of finite-state transducers that generate all morpho- logical forms of words in the dictionary (Krstev, 2008). 2 Laboratoire d’Automatique Documentaire et Linguistique. 82 Infotheca Vol. 19, No. 2, December ...
    ... Pat- terns, Machine Readable Dictionary, NLP syntax, NLP Semantic Extension and NLP Мultilingual Notations. LMF is suitable for encoding morpho- logical, semantic and grammatical aspect of lexical entry. The Lemon was modeled after the LMF, but with the idea of compensating the LMF short- comings in ...

  • Imputing missing data using grey system theory and the biplot method to forecast groundwater levels and yields

    Jelena Ratković, Dušan Polomčić, Zoran Gligorić, Dragoljub Bajić (2022)
    Groundwater management is one of today’s important tasks. It has become necessary to seek out increasingly reliable methods to conserve groundwater resources. Dependable forecasting of the amounts of groundwater that can be abstracted in a sustainable manner requires longterm monitoring of the groundwater regime (rate of abstraction and groundwater levels). Monitoring of the groundwater source for the town of Bečej, Serbia had been disrupted for multiple years. The objective of the paper is to assess the possibility of reinterpreting ...
    upravljanje podzemnim vodama, izvorište podzemnih voda, prognoziranje

  • Integrated energy planning approach for accelerating energy transition of households

    Boban Pavlović, Marija Živković, Dejan Ivezić (2023)
    The success of energy transition planning depends on several influential and variable factors that need to be considered and tracked in modeling to support policymakers. Expert-based energy models are mainly developed following the assumptions of experts and, in most cases, a limited number of stakeholders. This top-down modeling approach will provide satisfactory results in centrally managed energy sectors (electricity generation and distribution, district heating, etc.), where further decisions could be projected relatively precisely. However, the same approach will not ...
    Energetsko planiranje, Integrisano energetsko modeliranje, Energetska tranzicija, Domaćinstva, Individualno grejanje, LEAP

  • Quantitative landslide risk assessment in the city of Tuzla

    Miloš Marjanović, Biljana Abolmasov, Cvjetko Sandić, Miralem Mulać, Petar Begović (2021)
    In the climate-changing conditions, geological environment interacts more dramatically with the urban fabric than before. The urbanization is expansive and more aggressive than before, but so are the weather extremes and long-term climate trends. In effect, many processes which can be triggered by either side, nature or engineering, are becoming more pervasive than before, and such is the case with landslides. Dealing and managing landslides requires few crucial steps, starting from collecting data on landslide location and typology – ...
    "landslides", "risk assessment"
    ... of accuracy and AUC of 0.85 was achieved in landslide susceptibility model. The same can be expected for all subsequent models which incorporate the susceptibility model, such as hazard and exposure. On the other hand, risk model cannot be easily validated. Visually it corresponds well with both ...
    ... realistic risk distribution over the populated areas. Intermediate models, such as susceptibility, exposure, hazard etc., as well as the final risk model suggests good performance, both visually and numerically (high accurancy >75% and AUC of >0.85) and justifies landslide assessment in the future for ...
    ... inventory as a reference; establishing connection between landslide and non-landslide occurrences against the conditioning factors – optimizing the model – fitting the classification function; applying the classification function to the unseen instances in the remaining testing/validating area; outputting ...

  • Design of the Opencast Coal Mine Drmno Dewatering System

    Vladimir Pavlović, Dušan Polomčić, Tomislav Šubaranović (2014)
    Development of mining in the opencast mine Drmno from Kostolac basin in Serbia is carried out in the increasingly complex geological and hydro geological conditions with the decline of the coal seams to the alluvial part of Europe's largest river Danube. Greater depth and inflow of groundwater significantly increase costs for dewatering facilities construction with the requirement for optimizing of this more and more important surface mining process. Making decision on screen construction in the opencast mine with redesign ...
    dewatering system, groundwater, hydrodynamic model, dewatering wells, screen, reliability, environmental effects.

  • Hidrogeohemija prirodnih radioaktivnih elemenata u podzemnim vodama Srbije

    Marina D. ĆUK (2018)
    prirodni radioaktivni elementi, podzemna voda, geohemijska sredine, hidrogeohemijski uslovi, logistički model, hidrohemijsko modeliranje

  • Istraživanje mogućnosti korišćenja niskotemperaturnih izvora toplote za održivi razvoj energetike gradova

    Miodrag Grujić (2014)
    održivi razvoj, daljinsko grejanje, model, niskotemperaturni izvori, ELECTRE, Beograd

  • Евалуација утицаја успора ХЕ "Ђердап 1" на формирање режима подземних вода у приобаљу Дунава

    Predrag R. PAJIĆ (2016)
    hirdoelektrana „Đerdap 1“, uspor, režim podzemnih voda, matematički model

  • Hibridni sistem za planiranje i analizu ventilacije rudnika

    Nikola Lilić, Ranka Stanković, Ivan Obradović (2000)
    Ventilacija rudnika, informacioni sistemi
    ... U svetskoj rudarskoj praksi razvijeno je nekoliko modela za simulaciju požara: Grojerov (Greuer) model /29/, Simodov (Simode) model /81/, model Džeržinskog (Dziurzynski) /19/ kao i model Danka (Danko) i Muse-Džounsa (Mousset-Jones) /14/. Modeli Grojera i Džeržinskog se odnose na analizu suvih vazdušnih ...
    ... numeričke metode za simulaciju rudničke klime. Model za simulaciju požara u rudničkim ventilacionim mrežama prikazan u ovom poglavlju baziran je na Simodovom modelu, uz određene modifikacije i adekvatno softversko rešenje. Globalni simulacioni model Model se u osnovi sastoji od dva glavna dela: ♦ prvi ...
    ... stanja ventilacije rudnika predstavljena je uz pomoć modela dobijenog modifikacijom standardnog modela koji se koristi u Coad-Yourdon-ovoj objektno orijentisanoj analizi (OOA) /11/. U standardnom modelu svaki entitet realnog sistema obuhvaćenog modelom predstavljen je klasom odnosno objektom koji se sastoji ...

  • Turbidity simulation for short-term prediction: case study of the karst spring Surdup (Bor, Serbia)

    Marina Pešić, Vesna Ristić Vakanjac, Boris Vakanjac, Kostadin Jovanov (2016)
    Из перспективе снабдевања пијаћом водом, квалитет воде карстних издани је међу највишим, и често захтева само њихову дезинфекцију пре употребе. Међутим, карстне подземне воде изложене су одређеним притисцима. Током сушних периода углавном има мало воде, а током кишних периода има изненадних променa и квалитета и количине воде. Реакција слива на падавине је често брза и варијације у параметрима квалитета и квантитета (истицање, ниво вода, замућеност, укупан број микроорганизама, суспендовани нанос, итд.) су нестабилни. Ово захтева праћење истицања и ...
    водоснабдевање, карстно врело, истицање, мутноћа, симулациони модели

  • Fuzzy stohastički model izbora sistema otvaranja podzemnog rudnika

    Saša M. Jovanović (2016-05-16)
    Investiciono okruženje skopčano sa rudarskom industrijom je veoma svojstveno kada seuporedi sa okruženjima koje susrećemo u tipičnim proizvodnim industrijama. Neke odkarakterisitka rudarstva, koje su često naznačene kao jedinstvene su: visok intenzitetinvesticija, dugi predproizvodni periodi, visok rizik i neobnovljivost resursa.Investiranje u sistem otvaranja rudnika predstavlja dobar primer ireverzibilneinvesticije. Takva investicija zahteva pažljivu analizu, jer nakon njene realizacije ona sene može nadoknaditi bez značajnog gubitka vrednosti. Očigledno je da izbor sistemaotvaranja podzemnog rudnika pripada strateškom planiranju...
    otkopavanje; otvaranje; mreže i grafovi; fuzzy skupovi; stohastičkiprocesi; indeks konveksnosti; sistemi podrške odlučivanju
    ... determinističkim modelima. U ovakvim uslovima, matematičko modeliranje sistema zasniva se na proširivanju determinističkog modela uvođenjem slučajnosti. Ove slučajnosti se opisuju terminima verovatnoće i krajnji ishod je stohastički model sistema. Uopšteni oblik stohastičkog modela predstavljen je ...
    ... 03:57:19 Fuzzy stohastički model izbora sistema otvaranja podzemnog rudnika;Fuzzy stochastic model of underground development system selection. Saša M. Jovanović Дигитални репозиторијум Рударско-геолошког факултета Универзитета у Београду [ДР РГФ] Fuzzy stohastički model izbora sistema otvaranja ...
    ... uvođenje što realističnijih pretpostavki u razvoju fuzzy stohastičkog modela za izbor optimalnog sistema otvaranja podzemnog rudnika, (3) postavljanje dinamičkog optimizacionog modela i (4) provera valjanosti postavljenog modela u rešavanju praktičnih problema. 3 1.3 Polazne postavke ...

  • Characterization of the eastern Suva Planina Mt. karst aquifer (SE Serbia) by time series analysis and stochastic modelling

    Branislav Petrović, Veljko Marinović, Zoran Stevanović (2023)
    Earth-Surface Processes,Geology, Pollution, Soil Science, Water Science and Technology, Environmental Chemistry, Global and Planetary Change

  • The Dictionary of the Serbian Academy: from the Text to the Lexical Database

    Ranka Stanković, Rada Stijović, Duško Vitas, Cvetana Krstev, Olga Sabo (2018)
    In this paper we discuss the project of digitization of the Dictionary of the Serbo-Croatian Standard and Vernacular Language. Scanning and character recognition were a particular challenge, since various non-standard character set encoding was used in the course of the almost 60-year long production of the dictionary. The first aim of the project was to formalize the micro-structure of the dictionary articles in order to parse the digitized text of and transform it into structured data stored in relational lexical database. This approach ...
    computer lexicography, lexical database, language resources, dictionary, Serbian language
    ... published. For the de- velopment of the lexical database model for the DSA, a similar approach was used as in Stanković et al. (2018) for the Serbian morphological electronic dictionary. The main class, in the core of this dic- tionary model, is LexicalEntry, representing a headword of the dictionary ...
    ... as outlined in Stijović and Stanković (2017). Figure 4: Database model with mapped dictionary article segments. For languages with complex morphology, such as Serbian, information about inflection is very im- portant. In our model we used the class Forms to store the information related to the inflected ...
    ... ontologies (TEI, LMF, Ontolex, LexInfo). A lexical database mod- el was designed in compliance with these structured forms, following mostly the lemon model. Mapping of the lexical entry markers to LexInfo and TEI enabled export of the lexical data to the mentioned formats. A software solution for the ...

  • Faktori uticaja na izbor optimalnog sistema odbrane od podzemnih voda kod površinskih kopova

    Dragoljub Bajić, Dušan Polomčić (2015)
    hydrodynamic model, multi-criteria optimization, openpit mine

  • Mapping and classifying large deformation from digital imagery: application to analogue models of lithosphere deformation

    Taco Broerse, Nemanja Krstekanić, Cor Kasbergen, Ernst Willingshofer (2021)
    kontinentalna tektonika: kompresija, kontinentalna tektonika: ekstenzija, kontinentalna tektonika: transkurentni i transformni rasedi, pukotine, rasedi, zone snažnih deformacija, kinematika deformacija kore i omotača, teorijska mehanika, modelovanje
    ... have designed a model setup such that different regions of the model experience a wide range of different types of deformation: strike-slip faults (simple shear), normal faulting (extension) and thrust faulting (shortening). In the later stages of the model evolution, a part of the model undergoes a clockwise ...
    ... Diff. Stress (Pa) 0 2 1 C om pression S trik e -s lip N V 30° 4.5° clockwise rotation Figure 11. Model set-up: (a) Initial model set-up. All numbers are in centimeters. (b) Model configuration at the end of the experiment. Moving plate kinematics include the first step of 4 cm of translation ...
    ... cross-sections at three different locations. The top two sand layers have been added after finalizing the model to stabilize the model topography; the black dashed line indicates the original model topography. Cross-section a–a’ (top right) shows the main N-S dextral strike-slip zone, with superimposed ...

  • Stochastic simulation and prediction of turbidity dynamics in karst systems. Case study: Mokra karst spring (SE Serbia)

    Veljko Marinović, Branislav Petrović (2021)
    karst spring, stochastic modeling, ARCR model, Serbia

  • Simulation of Migration of Nitrate Contamination in Epikarst Groundwater: A Column Laboratory Method

    Branislav Petrović (2021)
    epikarst, model, nitrate, electrical conductivity

  • Primena fuzzy optimizacije u hidrodinamičkoj analizi

    Dragoljub Bajić, Dušan Polomčić, Jelena Ratković, Predrag Pajić (2018)
    znanje eksperta, optimizacija, trougaoni fuzzy brojevi, upravljanje podzemnim vodama, fuzzy logika, hidrodinamički model

  • Machine Learning and Deep Neural Network-Based Lemmatization and Morphosyntactic Tagging for Serbian

    Ranka Stanković, Branislava Šandrih, Cvetana Krstev, Miloš Utvić, Mihailo Škorić (2020)
    The training of new tagger models for Serbian is primarily motivated by the enhancement of the existing tagset with the grammatical category of a gender. The harmonization of resources that were manually annotated within different projects over a long period of time was an important task, enabled by the development of tools that support partial automation. The supporting tools take into account different taggers and tagsets. This paper focuses on TreeTagger and spaCy taggers, and the annotation schema alignment ...
    Part-of-Speech tagging, lemmatization, corpus, evaluation, Serbian, morphological dictionary
    ... Contemporary Serbian. INFOtheca, 12(2):36a–47a, December. 8. Language Resource References Cvetana Krstev, Duško Vitas. (2015). Serbian Morpho- logical Dictionary - SMD. University of Belgrade, HLT Group and Jerteh, Lexical resource, 2.0. Duško Vitas, Cvetana Krstev, Ranka Stanković, Miloš Utvić ...
    ... (DNNs) (Huang et al., 2015; Choi, 2016; Akbik et al., 2018). The first operational tagger and lemmatization model for Serbian were produced as a parameter file (TT11) for the TreeTagger model (Schmid, 1999) after a thorough anal- ysis of the state-of-the-art solutions (Popović, 2010), and subsequently ...
    ... two taggers trained on the largest train- ing set (SR-{100}). We used it to train the following tag- gers: 1) SerSpaCy, a spaCy model, and 2) TT19, a Tree- Tagger model. We used T11 as the baseline for evaluation, since it was already tested and evaluated as part of a pre- vious research (Popović ...