Претрага

Упит dcterms_subject_txt:linguistic variables

101 items

  • Prognoza operativne efikasnosti aktivnog podzemnog rudnika zasnovana na teoriji sivih sistema

    Svetlana M. Štrbac-Savić (2016-06-10)
    Efikasnost predstavlja preduslov za opstanak svake rudarske kompanije, posebno u uslovima izuzetno konkurentnog trţišnog okruţenja kao što je to rudarska industrija. Efikasnost oznaĉava sposobnost kompanije da ispuni svoje kratkoroĉne ili dugoroĉne ciljeve. Operativna efikasnost se definiše kao odnos izmeĊu ulaznih parametara potrebnih za odvijanje proizvodnje i pokazatelja dobijenih proizvodnjom. U kontekstu rudarskog poslovanja, operativna efikasnost se odnosi na vreme potrebno da se mineralno dobro transformiše u novĉana sredstva. Visoka operativna efikasnost se postiţe kada se ostvari prava kombinacija karakteristika ...
    podzemni rudnik, operativna efikasnost, prognoza, teorija sivih sistema, stohastiĉke diferencijalne jednaĉine, simulacija
    ... input variables that are controllable and those that are not and the physical and economic outcomes are complex and often nonlinear. Operational efficiency forecasting of mine in today‘s environment is much complex than it was just a few years ago. There are typically many variables, which are ...
    ... allows analysts to describe the uncertainty of variables that influence the value of DOL by different time depending scenarios. The first objective of the use of simulation in the forecasting is to determine the distribution of the DOL from the variables that affect his performance, which results ...
    ... what goals are realistic and capability estimation of the company in order to achieve them. Planners try to forecast the behavior of the input variables of production environment and arrive at desirable states. They create their strategies on realistic targets drawn from these forecasts. A forecast ...

  • Production of morphological dictionaries of multi-word units using a multipurpose tool

    Ranka Stanković, Ivan Obradović, Cvetana Krstev, Duško Vitas (2011)
    The development of a comprehensive morphological dictionary of multi-word units for Serbian is a very demanding task, due to the complexity of Serbian morphology. Manual production of such a dictionary proved to be extremely time-consuming. In this paper we present a procedure that automatically produces dictionary lemmas for a given list of multi-word units. To accomplish this task the procedure relies on data in e-dictionaries of Serbian simple words, which are already well developed. We also offer an evaluation ...
    electronic dictionary, Serbian, morphology, inflection, multi-word units, noun phrases, query expansion
    ... unification variables. A unifica- tion variable instantiates to all values of the corresponding grammatical feature. For Serbian, a pattern <$3:Case=$c> means that forms for all cases — 7 different values — will be generated for the third token. The occurrence of the same unification variables in the ...
    ... Larousse, 1990. [2] S. Paumier, Unitex 2.1 User Manual, http://www-igm.univ- mlv.fr/unitex/UnitexManual2.1.pdf, 2011. [3] M. Silberztein, “Nooj: A Linguistic Annotation System for Corpus Pro- cessing,” in Proceedings of HLT/EMNLP on Interactive Demonstrations, ser. HLT-Demo ’05, 2005, pp. 10–11. [4] C ...
    ... Philology, University of Belgrade, 2008. [5] A. Savary, “Computational Inflection of Multi-Word Units — A Con- trastive Study of Lexical Approaches,” Linguistic Issues in Language Technologies, vol. 1, no. 2, 2008. [6] C. Krstev and D. Vitas, “Finite State Transducers for Recognition and Generation of Compound ...

  • A WebGIS Decision Support System for Management of Abandoned Mines

    Ranka Stanković, Nikola Vulović, Nikola Lilić, Ivan Obradović, Radule Tošović, Milica Pešić-Georgiadis (2016)
    ... in the dataset. For the qualitative variables the score is mapped using a metadata dictionary, like for example for groundwater vulnerability: very high 100, high 80, medium high 60, medium 40, low, 20, very low 0. The complete list of qualitative variables mapping is available in [15]. Authorized ...
    ... related calculation varies from simple to complex. As an example, we present simple formulas for score mapping to the range 0–100 for quantitative variables, such as degraded surfaces area, waterway distance and population in the range of 500 m: Surface_Score = (P ´ min) ˆ 100/(max ´ min), where P is ...

  • Comprehensive Profiling of Microbiologically Induced CaCO3 Precipitation by Ureolytic Bacillus Isolates from Alkaline Soils

    Olja Šovljanski, Lato Pezo, Jovana Stanojev, Branimir Bajac, Sabina Kovač, Elvira Tóth, Ivan Ristić, Ana Tomić, Aleksandra Ranitović, Dragoljub Cvetković, Siniša Markov (2021)
    MICP process, kinetic study, calcite, vaterite, MALDI-TOF identification, Bacillus licheniformis, Sporosarcina pasteurii
    ... of the MICP variables was accomplished. The optimal ranges for the output parameters are presented in Supplementary Table S1, while the maximum of experimentally obtained values was considered optimal (all polarity values were positive). The minimum and maximum of all observed variables obtained during ...
    ... xi − min i xi , ∀i (1) The standard score (SS) is the mathematical function whose maximum has been determined by evaluating the scores for all variables, according to Equation (2). Each output variable has its weight (wi) when calculating the function SS: SS = w1 · SR + w2 · pH + w3 · UAG + w4 · UAC ...
    ... formation on/in Urea- CaCl2 medium (MUC), and CaCO3 formation on/in YE-CaCl2 medium (MEC) present the normalized values of experimentally obtained variables, obtained using Equation (1). The maximum of SS function presented the optimal parameters and also the optimum for parameters. If the value of optimal ...

  • Hydrochemical features and their controlling factors in the Kucaj-Beljanica Massif, Serbia

    Fen Huang, Ljiljana Vasic, Xia Wu, Jianhua Cao, Saša Milanovic (2019)
    Earth-Surface Processes, Geology, Pollution, Soil Science, Water Science and Technology, Environmental Chemistry, Global and Planetary Change

  • Application of stochastic models for mine planning and coal quality control

    Dejan Stevanović, Božo Kolonja, Ranka Stanković, Dinko Knežević, Mirjana Banković (2014)
    ... plant performance and cost. According to Shih and Frey [3] sulfur and ash content and heating value are considered as normally distributed random variables. The objectives of a model to optimize operation of a plant must include minimizing: (1) the expected (mean) costs of coal blending and (2) the ...
    ... mining phase and having the same elevation. The mathematical formulation of the scheduling procedure of mining blocs in terms of binary decision variables describing in which period the particular block is extracted and what is its destination (either directly to the power plant or to processing plant ...
    ... mining phase and having the same elevation. The mathematical formulation of the scheduling procedure of mining blocs in terms of binary decision variables describing in which period the particular block is extracted and what is its destination (either directly to the power plant or to processing plant ...

  • A Data Driven Approach for Raw Material Terminology

    Olivera Kitanović, Ranka Stanković, Aleksandra Tomašević, Mihailo Škorić, Ivan Babić, Ljiljana Kolonja (2021)
    The research presented in this paper aims at creating a bilingual (sr-en), easily searchable, hypertext, born-digital, corpus-based terminological database of raw material terminology for dictionary production. The approach is based on linking dictionaries related to the raw material domain, both digitally born and printed, into a lexicon structure, aligning terminology from different dictionaries as much as possible. This paper presents the main features of this approach, data used for compilation of the terminological database, the procedure by which it has ...
    sirovine, rudarstvo, terminologija, rečnik, terminološka aplikacija, mobilna aplikacija, digitizacija, leksički podaci, korpusi, otvoreni povezani podaci
    ... Keywords: raw material; mining; terminology; dictionary; terminology application; mobile applica- tion; digitization; lexical data; corpus data; linguistic linked open data 1. Introduction During the last decade, lexicography entered a new era due both to rapid development of advanced computational ...
    ... Keywords: raw material; mining; terminology; dictionary; terminology application; mobile applica- tion; digitization; lexical data; corpus data; linguistic linked open data 1. Introduction During the last decade, lexicography entered a new era due both to rapid development of advanced computational ...
    ... have two components, 17% have three, and the remaining 14% have four or more. The majority of English multi-compound terms are noun compounds. These linguistic constructions are most often composed of two or more nouns. for example, ‘coal waste’—‘jalovina’, ‘waste dump’—‘odlagalište jalovine’, ‘gas pres ...

  • Gate Road Support Deformation Forecasting Based on Multivariate Singular Spectrum Analysis and Fuzzy Time Series

    Luka Crnogorac, Rade Tokalić, Zoran Gligorić, Aleksandar Milutinović, Suzana Lutovac, Aleksandar Ganić (2021)
    Underground mining engineers and planners in our country are faced with extremely difficult working conditions and a continuous shortage of money. Production disruptions are frequent and can sometimes last more than a week. During this time, gate road support is additionally exposed to rock stress and the result is its progressive deformation and the loss of functionality of gate roads. In such an environment, it is necessary to develop a low-cost methodology to maintain a gate road support system. ...
    deformacije podgrade, lasersko skeniranje, višekanalna singularna spektralna analiza, prognoza, klasterisanje fuzzy vremenskih serija
    ... given by the user and each interval is characterized by an adequate linguistic variable. The variable whose values are words or sentences in a natural or artificial language is called a linguistic variable. We use five linguistic variables n = 5 to describe displacement intensity of configuration of the ...
    ... given by the user and each interval is characterized by an adequate linguistic variable. The variable whose values are words or sentences in a natural or artificial language is called a linguistic variable. We use five linguistic variables n = 5 to describe displacement intensity of configuration of the ...
    ... 0007, 0.2027 ]. According to Equation (19) the length of interval is 0.0338. Quantification of the linguistic variables by the triangular fuzzy numbers is repre- sented in Table 17. Table 17. Variables obtained by quantification. Variable ai bi ci A1 −0.0007 0.0332 0.0671 A2 0.0332 0.0671 0.1010 A3 ...

  • Influence of DEM resolution on numerical modelling of debris flows in RAMMS - Selanac case study

    Jelka Krušić, Biljana Abolmasov, Mileva Samardžić Petrović (2019)
    Debris flows induced by intensive rainfall represent very hazardous phenomena in many parts of the World. Methods for prediction of runout distance of flow like mass movements are different and depending on the input data, rheology, and available or appropriate numerical solution. However, sometimes it is not easy to obtain pre event and post event high-resolution data in the rural or mountainous area. Thus, the topology of terrain is the most important input parameter for the every real case ...
    tecišta, modeliranje, RAMMS, DEM
    ... Birmensdorf) and the Swiss Federal Institute for Snow and Avalanche Research (SLF, Davos). The mass balance equation incorporates the field variables flow height H (x, y,t) and flow velocity U (x, y,t) and is given by: 𝑄(𝑥, 𝑦, 𝑡) ˙ = 𝜕𝑡𝐻 + 𝜕𝑥 (𝐻 𝑈𝑥 ) + 𝜕𝑦 (𝐻 𝑈𝑦 ) (1) ...

  • Numerical Models of Debris Flows with Entrainment Analysis-Case Studies from the Republic of Serbia

    Jelka Krušić , Biljana Abolmasov, Miloš Marjanović (2021)
    The results of material entrainment analysis in RAMMS debris flow software, as well as numerical models of final flow heights for two case studies from the Republic of Serbia are presented. Both of debris flow cases started with initial sliding of huge volume block, prolonging to behave as flowing process. Results of the analysis showed that entrainment material affects final results of transportation model, runout distance, deposition area and volume of debris flow. In both cases entrainment volume is very ...
    tecišta, zadržavanje nanosa, RAMMS, validacija

  • Projecting short to medium-term effects of carbon emissions trading on Serbia's GDP

    Boban Pavlović, Nikola Trtica (2024)
    This paper presents an approach to assess the short to medium-term effects of the Emissions Trading System (ETS), an economic and climate policy instrument aimed at reducing greenhouse gas emissions, on GDP from the expenditure side. The analysis focuses on Serbia’s electricity sector, which relies heavily on lignite-based pro duction dominated by state-owned enterprises. The obtained projections suggest that in the short term, the introduction of an ETS may lead to slower GDP growth compared to official forecasts. However, ...
    ETS, BDP - rashodni pristup, cene električne energije
    ... reductions. Wu and Gong (2021) estimate the impact on China's GDP by analyzing different allocation modes in implementing an ETS, consid- ering variables such as GDP losses under different allocation criteria. Although all assessed allocation modes show a decline in GDP during the first four years ...
    ... of an ETS on GDP is that the analysis may seem somewhat straightfor- ward, as it focuses mainly on key parameters and assumes that certain variables remain relatively constant according to official projections. This constraint can limit the depth of the analysis and may not capture the full ...
    ... coal-based electricity production capacity, and reliance on predominantly domestic electricity for consumption, the more significant impact of other variables may only become apparent in the long term, while this study focuses on the effects up to 2030. Nonetheless, the obtained comparisons provide ...

  • The external aggregation Newton's method for solving nonlinear equations and applications

    Marija Paunović, Dejan Ćebić, Nebojša Ralević (2020)
    Њутнов метод, агрегациона функција, ред конвергенције

  • A Model for Determining Fuzzy Evaluations of Partial Indicators of Availability for High-Capacity Continuous Systems at Coal Open Pits Using a Neuro-Fuzzy Inference System

    Miljan Gomilanović, Miloš Tanasijević, Saša Stepanović, Filip Miletić (2023)
    This paper presents a model for determining fuzzy evaluations of partial indicators of the availability of continuous systems at coal open pits using a neuro-fuzzy inference system. The system itself is a combination of fuzzy logic and artificial neural networks. The system availability is divided into partial indicators. By combining the fuzzy logic and artificial neural networks, a model is obtained that has the ability to learn and uses expert judgment for that learning. This paper deals with the ...
    системи, континуални системи експлоатације (роторни багер-транспортер-дробилично постројење), рударство, расположивост, меко рачунарство, фази логика, ANN, ANFIS

  • Towards Semantic Interoperability: Parallel Corpora as Linked Data Incorporating Named Entity Linking

    Ranka Stanković, Milica Ikonić Nešić, Olja Perisic, Mihailo Škorić, Olivera Kitanović (2024)
    U radu se prikazuju rezultati istraživanja vezanih za pripremu paralelnih korpusa, fokusirajući se na transformaciju u RDF grafove koristeći NLP Interchange Format (NIF) za lingvističku anotaciju. Pružamo pregled paralelnog korpusa koji je korišćen u ovom studijskom slučaju, kao i proces označavanja delova govora, lematizacije i prepoznavanja imenovanih entiteta (NER). Zatim opisujemo povezivanje imenovanih entiteta (NEL), konverziju podataka u RDF, i uključivanje NIF anotacija. Proizvedene NIF datoteke su evaluirane kroz istraživanje triplestore-a korišćenjem SPARQL upita. Na kraju, razmatra se povezivanje Linked ...
    paralelni korpusi, povezivanje imenovanih entiteta, prepoznavanje imenovanih entiteta, NER, NEL, povezani podaci, NIF, Vikipodaci

  • Long-term planning methodology for improving wood biomass utilization

    Vladimir Vukašinović, Dušan Gordić, Marija Živković, Davor Koncalović, Dubravka Živković (2019)
    The insufficiently developed forest management system is often followed by undeveloped forest resources supply chain and insufficient institutional support. These cause inefficient usage of fuel-wood as well as huge amounts of unused forest residues. In order to achieve optimal and long-term sustainable utilisation of biomass, an original methodology based on the interaction of mathematical optimization and backcasting approach has been developed. Mathematical optimization is used for both generation and consideration of techno-economic parameters of the forest biomass supply chain. ...
    Long-term planning methodology, Forest biomass, MINLP, Backcasting

  • Effects of Energy Production and Consumption on Air Pollution in Serbia

    Marija Živković (2019)
    Energy production and combustion, mostly from unregulated or inefficient fuel combustion, are the single most important anthropogenic sources of air pollutant emissions. Energy sector in Serbia is highly fossil fuel intensive: 87.88% of energy consumed in Serbia is related to fossil fuels, while almost 95% of energy sources are combusted. In 2017. energy related carbon dioxide emission in Serbia is was 47.95 million tones. The main source of carbon dioxide emission was coal, responsible for almost 70% of energy ...
    energy related emissions, Serbia
    ... that there is no single level of emissions per unit of a specific fuel (emission factor) but, rather, a range of emission factors depending on such variables 4. Specific fuels play a key role in relation to certain types of air pollution, both in terms of emissions per unit of fuel consumed and in terms ...

  • Parameter determination of soil oscillation law using quotient of the relative growth increments of oscillation velocity and reduced distances at “Nepričava“ open pit mine

    Suzana Lutovac, Sanja Bajić, Marina Ravilić, Radmila Gaćina (2015)
    ... dependency index ρ (Vukadinović, 1970) between the reduced distance R and the oscillation velocity v. The evaluation of the relationship degree of two variables (Lutovac, 2010) to values of the curveline dependency index ρ is given in the following survey: - 0 < ρ < 0.2 - none or highly poor correlation; ...

  • Life Cycle Assessment of Individual Wood Biomass Heating Systems in Households

    Boban Pavlović, Dejan Ivezić, Marija Živković (2020)
    The use of solid fuels (wood biomass and coal) for heating of households continues to be common practice within European countries. Solid fuel combustion in households contributes more than 46% to total emissions of fine particulate matter. In this study, a life-cycle assessment (LCA) of firewood-based and pellet-based heating systems is performed. These two systems represent two different types of individual wood biomass heating systems. In the case of the firewood-based heating systems, it is analyzed a typical stove ...
    Grejanje, Analiza životnog ciklusa, Drvna biomasa, Individualni sistemi grejanja
    ... scenario;  The same emission factors for fuels. Therefore, further research should consider the wider scope of LC indicators and environment variables that have a significant influence on choosing the best alternative for heating. REFERENCES [1] EC, European Commission. Heating and cooling ...

  • Хазард од клизишта у Србији у 21. веку

    Biljana Abolmasov (2019)
    клизишта, хазард од клизишта, промене климе
    ... different impacts, this incre in a variation in the frequency and the spatial distribution o landslides (landslide hazard). The influence of climate variables (p and its variations on landslide hazard should be analyzed by tak the Serbian National Climate Scenario Models up to 2100. 88 Landslide risk ...

  • Ontološki model upravljanja rizikom u rudarstvu

    Olivera Kitanović (2021)
    Rudarska proizvodnja obuhvata kompleksne tehnološke sisteme, što nameće potrebu za uspostavljanjem i unapređivanjem sistema upravljanja rizikom. Heterogenost i obim podataka neophodnih za upravljanje rizikom zahtevaju sistem koji ih na fleksibilan način integriše i omogućava njihovo optimalno korišćenje. Osnovni cilj ove disertacije je razvoj ontologije za domen rudarstva i na njoj zasnovanog modela za upravljanje rizikom. Njegova realizacija podrazumeva i implementaciju algoritama ekstrakcije informacija za popunjavanje ontologije, kao i odgovarajuće softversko rešenje. Razvoj modela obuhvata i značajno proširenje rudarskog korpusa, kao ...
    rudarstvo, rizik, upravljanje rizikom, procena rizika, ontologija, semantička mreža, ekstrakcija informacija, upravljanje znanjem, računarska lingvistika
    ... Key words: mining, risk, risk management, risk assessment, ontology, semantic network, information extraction, knowledge management, computational linguistic Scientific field: Mining Engineering Scientific subfield: Computer science and systems engineering UDC Number: UDC Number: 004:004.42/.82:519 ...
    ... on Data Engineering, 215–24. https://doi.org/10.1109/ICDE.2001.914830. Justeson, John S., and Slava M. Katz. 1995. “Technical Terminology: Some Linguistic Properties and an Algorithm for Identification in Text.” Natural Language Engineering 1 (1): 9–27. https://doi.org/10.1017/S1351324900000048. Karović ...
    ... Proceedings of the Eleventh International Conference on Language Resources and Evaluation - W23 6th Workshop on Linked Data in Linguistics : Towards Linguistic Data Science (LDL-2018), LREC 2018, edited by John P. McCrae, Christian Chiarcos, Thierry Declerck, Jorge Gracia, and Bettina Klimek, 18–23. Paris ...