Претрага

Упит dcterms_subject_txt:Statistics and Probability

2348 items

  • Understanding the effect of synthesis and sintering temperature on the functional properties of barium titanate/cobalt ferrite composites

    Marija Šuljagić, Aleksandar Kremenović, Ivan Petronijević, Adis Džunuzović, Miljana Mirković, Vladimir Pavlović, Ljubica Anđelković (2023)
    To investigate the effect of synthesis procedure and sintering temperature on the functional properties of perovskite/spinel ceramics, BaTiO3/CoFe2O4 composites were prepared by thermal decomposition, coprecipitation, and microemulsion method, and sintered at 1150°C and 1300°C. The phase composition and morphology of as-prepared powders as well as sintered ceramics were thoroughly examined by X-ray powder diffraction (XRPD) and scanning electron microscopy (SEM) coupled with electron dispersive spectroscopy (EDS). The dielectric and ferroelectric measurements were performed in detail. Generally, the ...
    Perovskite/spinel ceramics, Multiferroic, Sintering, Influence of synthesis method

  • Machine learning based landslide assessment of the Belgrade metropolitan area: Pixel resolution effects and a cross-scaling concept

    Uroš Đurić, Miloš Marjanović, Zoran Radić, Biljana Abolmasov (2019)
    Improvements of Machine Learning-based landslide prediction models can be made by optimizing scale, customizing training samples to provide sets with the best examples, feature selection, etc. Herein, a novel approach, named Cross-Scaling, is proposed that includes the mixing of training and testing set resolutions. Hypothetically, training on a coarser resolution dataset and testing the model on a finer resolution should help the algorithm to better generalize ambiguous examples of landslide classes and yield fewer over/underestimations in the model. This ...
    klizišta, podložnost, mašinsko učenje

  • Underground loading-haulage equipment selection with application of topsis method with different weighting methods of criteria

    Vladimir Krivošić, Luka Crnogorac, Rade Tokalić (2024)
    The choice of adequate mining machines is one of the most complex problems in the underground exploitation of mineral raw materials. The weight of such a decision is reflected in the high prices of these machines and the occurrence of even greater costs during their use if their choice was wrongly conceived. There are numerous examples from practice in which such decisions were made solely on the basis of comparing the prices of machines, without considering any of the ...
    utovarno-transportna mehanizacija, izbor, TOPSIS, entropija, standardna devijacija, težina kriterijuma

  • Процена ризика од удеса на флотацијском јаловишту "Ваља Фундата

    Милица Илиевски (2024)
    У овом завршном раду под називом: „Процена ризика од удеса на флоатацијском јаловишту „Ваља Фундата““ кроз 8 поглавља описане су примењене методе за управљање флотацијском јаловином, као и могући сценарији удеса који могу настати услед нестабилности брана или природних катастрофа.Рад користи технике попут FMEA и ALARP за анализу ризика, при чему се ризик дефинише као функција вероватноће и последица инцидента.Препоручене су мере за смањење ризика и унапређење стабилности брана,укључујући редовно одржавање и надградњу инфраструктуре.Резултати рада указују да је ризик ...
    флотацијска јаловина, процена ризика, рушење бране, удеси, еколошке последице
    ... The paper employs techniques such as FMEA and ALARP for risk analysis, with risk defined as a function of the probability and consequences of an incident. Measures to reduce risks and improve dam stability are recommended, including regular maintenance and infrastructure upgrades. The results of ...
    ... accidents is classifled as "low to medium," with varying probabilities depending on the scenario. The highest probability of accidents is related to dam instability, while the probability of overflow due to heavy rainfall is considered "very low" due to the tailings facility”s capacity to accommodate ...
    ... depending on the speed of evacuation and the direction of the flood wave. The Valja Fundata flotation tailings facility is classified in Category A due to potential significant environmental consequences, including long-term pollution of water, soil, and air, as well as the risk to the health ...

  • Arsenic in tape waters of the south Pannonian basin (Serbia) and arsenic risk assessment

    Petar Papić, Marina Ćuk, Maja Todorović, Jana Stojković, Bojan Hajdin, Nebojša Atanacković, Dušan Polomčić (2012)
    ... [33]. Carcinogenic risk is the probability of incidence of can- cer from chemical exposure. It is calculated using the fol- lowing formula: R=1-exp(-(SF · ADD) ...where: SF is the oral carcinogenic slope factor and for As, it is equal to 1.5 mg/kg·day. Results and Discussion Quality of Groundwater ...
    ... this study, and consequently with higher estimated toxic and carcinogenic risk should be con- nected to the new treatment for water supply. The minimum As water gave HQ and R values of 0.29 and 0.13 per 1,000 persons, respectively, and the maximum As water resulted in HQ and R of 5.72 and 2.6 per 1,000 ...
    ... existence of toxic risk. Futhermore, in the study area the minimum As water gave HQ and R values of 0.29 and 0.13 per 1,000 persons, respectively, and the maximum As water resulted in HQ and R of 5.72 and 2.6 per 1,000 persons, and this should indicate the importance of developing a regional water sup- ply system ...

  • Extraction of Bilingual Terminology Using Graphs, Dictionaries and GIZA++

    Branislava Šandrih, Ranka Stanković (2020)
    U nauci, industriji i mnogim istraživačkim oblastima, terminologija se brzo razvija. Najčešće, jezik koji je „lingua franca“ za većinu ovih oblasti je engleski. Kao posledica toga, za mnoga polja termini domena su koncipirani na engleskom, a kasnije se prevode na druge jezike. U ovom radu predstavljamo pristup za automatsko izdvajanje dvojezične terminologije za englesko-srpski jezički par koji se oslanja na usaglašeni dvojezični korpus domena, ekstraktor terminologije za ciljni jezik i alat za usklađivanje delova. Ispitujemo performanse metode na domenu ...
    ekstrakcija terminologije, validacija terminologije, GIZA++, grafovi, Unitex, klasifikacija teksta
    ... symmetrisation heuristic (Koehn et al., 2003). Each pair of aligned chunks from this list also contained information about inverse and direct phrase translation probability.10 We have ini- tially discarded all aligned chunks that did not have at least one of these probabilities greater than 0.85, simu ...
    ... of several Serbian terminological dictionaries and the Serbian e-dictionary of MWUs (Krstev, 2008). In this paper we refer to this tool as Serb-TE. Some of these structures are A_N_Prep_N in republički zavod za statistiku ‘republic office for statistics’ or A_N_(A_N)gen in statistički godǐsnjak re- ...
    ... unrelated to the individual pieces, (3) non-substitutability of synonym words (e.g., by and big), and (4) ambiguity between MWE and non-MWE readings of a substring by and large (e.g., by and large we agree versus he walked by and large tractors passed him). Due to all these difficulties, tackling MWEs represents ...

  • An Integrated Environment for Management and Exploitation of Linguistic Resources

    Ranka Stanković, Ivan Obradović (2009)
    ... rules in the strategy reflects the probability of their application. C. Management of wordnets The module for management of wordnets [11] provides for manipulation of individual wordnets, as well as synchro- nized use of two wordnets (for example, Serbian and Eng- lish), where corresponding synsets ...
    ... words and DELAF dictionaries of their morphological forms, with more than 120.000 simple words and 1.400.000 word forms. In addition to that, dictionaries of compounds named DELAC for the lemma dictionaries and DELACF for their 287 An Integrated Environment for Management and Ex ...
    ... their volume and content, their maintenance and develop- ment became more and more complex. In addition to that, there was also a growing need to use several different re- sources for solving a particular task. Thus the development of a software tool for maintenance and integration of multi- ...

  • Exhumation history of the Juhor Mts. in central Serbia, the Northern Serbo–Macedonian Subunit

    Uros Stojadinovic, Hannah Pomella, Nemanja Krstekanić, Bojan Kostić, Maja Maleš, Nikola Randjelovic, Miloš Radonjić (2024)
    Northern Serbo–Macedonian Subunit, low-t thermochronology, kinematic analyses, extensional deformations

  • Some models for determination of parameters of the soil oscillation law during blasting operations

    Suzana Lutovac, Dragan Medenica, Branko Gluščević, Rade Tokalić, Čedomir Beljić (2018)
    ... Elementsof Probability and Mathematical Statistics; Technique for Copying Bureau of Construction: Belgrade, Serbia, 1970; pp. 329–331. 11. Trajković, S.; Tokalić, R.; Lutovac, S. Study of Seismic Impacts on Adjacent Building due to Blasting Operations at Kovilovača Open Pit; Faculty of Mining and Geology: ...
    ... Thesis, Faculty of Mining and Geology, University of Belgrade, Belgrade, Serbia, 2010; pp. 37–38, 48–55. 8. Kudryavtsev, V.A.; Demidovich, B.P. A Brief Course of Higher Mathematics, 2nd ed.; Mir Publishers: Moscow, Russia, 1984; pp. 293–295. 9. Petrović, Ž. Business Statistics, Megatrend; University ...
    ... explosive amount, and conditions of blasting and geologic characteristics of the soil; all of this being determined on the basis of test blasting for the specific work environment. In the Sadovskii equation two parameters, K and n appear and they are conditioned both by rock mass characteristics and blasting ...

  • Microstructural and magnetic properties of electrospun hematite/cuprospinel composites

    Mira Ristić, Aleksandar Kremenović, Michael Reissner, Željka Petrović, Svetozar Musić (2020)
    Phase composition, microstructural and magnetic properties of electrospun hematite/cuprospinel composites were investigated. Samples were synthesized starting with 0 to 10 mol% of copper relative to iron. The round shape of reference electrospun fbres was preserved upon their heating up to 600 °C in air, whereas at 700 °C hollow substructure was additionally formed. In these reference samples the presence of hematite phase was detected by XRPD. A small amount (traces) of Fe3O4 /γ-Fe2O3 was also found, due to the ...
    Electrical and Electronic Engineering, Condensed Matter Physics, Atomic and Molecular Physics and Optics, Electronic, Optical and Magnetic Materials

  • Old or New, We Repair, Adjust and Alter (Texts)

    Cvetana Krstev, Ranka Stanković (2020)
    U ovom radu predstavljamo kako se e-rečnici i kaskade transduktora konačnih stanja implementirani u alatu Unitex mogu koristiti za rešavanje tri problema transformacije teksta: ispravljanje tekstova nakon OCR-a, vraćanje dijakritičkih znakova i prebacivanje između različitih jezičkih varijanti.
    ispravka teksta, OCR greške, restauracija dijakritika , jezičke varijante, elektronski rečnik, transduktori konačnih stanja
    ... developed for detecting and correcting such errors. As early as in the late 1950s, Bledsoe and Browning (1959) wrote about solving the OCR problem by using a small dictionary with a probability assigned to each word. Despite the considerable improvement of OCR software in subsequent years the prob- lem ...
    ... confused, for instance letters ‘п’, ‘и’, ‘н’, letters ‘с’ and ‘е’, letters ‘с’ and ‘о’ (but not ‘е’ and ‘о’); – A group of letters can be confused for one letter or another group of letters, e.g. two letters ‘га’ and one letter ‘ш’; two letters ‘шп’ and two letters ‘иш’; – Letters can be confused for digits ...
    ... Latin alphabet that can be accommo- dated by ASCII character set, and affects five letters: š, d, č, ć and ž. As a result, some letters or letter groups become ambiguous: – c – can stand for č and ć (and c); – z – can stand for ž (and z ); 5 The example text is from the novel by Lazar Komarčić ...

  • SrpELTeC: A Serbian Literary Corpus for Distant Reading

    Ranka Stanković, Cvetana Krstev, Duško Vitas (2024)
    U članku je predstavljen SrpELTeC, korpus razvijen u okviru akcije COST Distant Reading for European Literary History (CA16204). Svi romani u SrpELTeC-u su odabrani, pripremljeni i obeleženi korišćenjem zajedničkih principa uspostavljenih za sve jezičke zbirke u Evropskoj zbirci književnog teksta (ELTeC). Navedeni su izazovi i rešenja u pripremi SrpELTeC od nule. Svi romani su ručno kodirani u TEI sa bogatim metapodacima i strukturnim napomenama. Automatska anotacija je uključivala POS-označavanje, lematizaciju i imenovane entitete, oslanjajući se na resurse za obradu ...
    digital humanities, Serbian literature, text corpora, distant reading , linked data, named entity recognition, text analytics

  • Using English Baits to Catch Serbian Multi-Word Terminology

    Cvetana Krstev, Branislava Šandrih, Ranka Stanković (2018)
    In this paper we present the first results in bilingual terminology extraction. The hypothesis of our approach is that if for a source language domain terminology exists as well as a domain aligned corpus for a source and a target language, then it is possible to extract the terminology for a target language. Our approach relies on several resources and tools: aligned domain texts, domain terminology for a source language, a terminology extractor for a target language, and a ...
    aligned texts, word alignment, terminology extraction, electronic dictionaries, morphological inflection
    ... information about inverse and direct phrase translation probability.13 First we kept only those aligned chunks that have at least one of these probabilities greater than 0.85, simultaneously performing punctuation elimination and discarding those that consisted of punctu- ation and numbers only. This reduced ...
    ... Machine. Annals of statistics, pages 1189–1232. Heafield, K. (2011). KenLM: Faster and Smaller Lan- guage Model Queries. In Proceedings of the Sixth Work- shop on Statistical Machine Translation, pages 187–197. Association for Computational Linguistics. Koehn, P., Och, F. J., and Marcu, D. (2003). ...
    ... for a source and a target language, then it is possible to extract the terminology for a target language. Our approach relies on several resources and tools: aligned domain texts, domain terminology for a source language, a terminology extractor for a target language, and a tool for word and chunk alignment ...

  • Bilingual lexical extraction based on word alignment for improving corpus search

    Jelena Andonovski, Branislava Šandrih, Olivera Kitanović (2019)
    Library and Information Sciences,Computer Science Applications

  • A Multilingual Evaluation Dataset for Monolingual Word Sense Alignment

    Sina Ahmadi, John P McCrae, Sanni Nimb, Fahad Khan, Monica Monachini, Bolette S Pedersen, Thierry Declerck, Tanja Wissik, Andrea Bellandi, Irene Pisani, [...] Ranka Stanković and others (2020)
    Aligning senses across resources and languages is a challenging task with beneficial applications in the field of natural language processing and electronic lexicography. In this paper, we describe our efforts in manually aligning monolingual dictionaries. The alignment is carried out at sense-level for various resources in 15 languages. Moreover, senses are annotated with possible semantic relationships such as broadness, narrowness, relatedness, and equivalence. In comparison to previous datasets for this task, this dataset covers a wide range of languages ...
    lexical semantic resources, sense alignment, lexicography, language resource
    ... known Treccani17 and Garzanti18 reference dictionar- ies. 17http://www.treccani.it 18https://www.garzantilinguistica.it 5. Evaluation We performed an intrinsic evaluation on our datasets by computing a number of resource statistics on the senses. Table 2 provides resource statistics based on part ...
    ... alignments are distributed over the combination of all senses. In other words, a higher density represents a higher probability that two senses are aligned in the two resources. Estonian and German resources, for example, have the highest density among the resources. 3239 Language Semantic relationship ...
    ... 764 (6492) Table 2: Statistics of the datasets. This table shows the number of senses in the resources (number of the words in the definitions are provided in parentheses). ing relationship from out of the five options available. This choice was not always an intuitive one and the procedure often ...

  • Models of Determining the Parameters of Rock Mass Oscillation Equation with Experimental and Mass Blastings

    Suzana Lutovac, Branko Gluščević, Rade Tokalić, Jelena Majstorović, Čedomir Beljić (2018)
    ... 2016, 9, 617. [CrossRef] 14. Petrović, Ž. Business Statistics, Megatrend; University of Applied Sciences: Belgrade, Serbia; Faculty for Management: Zaječar, Serbia, 2004; p. 182. 15. Vukadinović, S. Elements of Probability and Mathematical Statistics; Technique for Copying Bureau of Construction: Belgrade ...
    ... destruction, and part of energy, in the form of seismic wave, is lost in the rock mass causing rock mass oscillation. Investigations of the character and behavior of the pattern of seismic wave indicate that the intensity and nature of the seismic wave are influenced by rock mass properties, and by blasting ...
    ... vN and appropriate reduced distances R1, R2, ..., RN and having in mind relations (22) and (27), we will calculate the value of ST according to Equation (29). For each pair (xi, yi + 3) from Equation (35), we will determine the Minerals 2018, 8, 70 8 of 18 parameters Ai, i = 1, 2, ..., N, and in ...

  • 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
    ... measure of a chance that the word is used in the offensive meaning and it is calculated based on the number of different meanings in the comprehensive explanatory dictionary of Serbian, and need to match neither corpus nor probability of use. An excerpt from the dictionary for the word lopov (thief) is ...
    ... but we could not confirm our hypothesis because the number of tweets with hashtags was rather low – only 110 non-abusive and 24 abusive tweets contained hashtags. 3.2 Statistics and availability of the corpus As a measure of inter-annotator agreement, we used Cohen’s Kappa coefficient. The results for ...
    ... their time and efforts to help us build AbCoSER v1.0 corpus of abusive speech in Serbian. 1 Introduction 1.1 Motivation and research background With the development of the Internet and the increasing use of online mass media and social networks, detection of inappropriate content and incitement to ...

  • Model inteligentnog sistema adaptivnog upravljanja procesom prerade rude

    Ivana M. Jovanović (2016-01-13)
    U oblasti procesa prerade rude, flotacijska koncentracija predstavlja jednu od najznačajnijih i najčešće primenjivanih metoda separacije korisnih od nekorisnih minerala. Samim tim, veoma je važno osigurati uspešan rad flotacijskog postrojenja kroz dostizanje zadovoljavajućih tehno-ekonomskih pokazatelja. Cilj upravljanja procesom flotacijske koncentracije je upravo optimizacija kvaliteta i iskorišćenja korisne komponente u koncentratu uz maksimizaciju profita. Shodno tome, istraživanja na polju modelovanja i upravljanja ovim procesom zauzimaju značajno mesto u praksi kontolnog inženjenringa.Teorijska istraživanja u okviru doktorske disertacije obuhvatila su analizu položaja ...
    flotacijska koncentracija, modelovanje, upravljanje, inteligentni sistem, soft kompjuting, fazi logika, veštačke neuronske mreže
    ... ies of calculating the probability of flotation. In: Coagulation and Flocculation: Theory and Applications (Edited by B. Dobiáš) pp. 321-353 252. Schulze, H.J., Stöckelhuber W., 2005. Flotation as a Heterocoagulation Process: Possibilities of Calculating the Probability of the Microprocesses, Rupture ...
    ... pp. 323–325 139. Kelsall, D.F., 1961. Application of probability in the assessment of flotation systems. Transactions of the Institution of Mining and Metallurgy, Vol. 70, pp. 191–204 140. King, R.P., 2001. Modeling and Simulation of Mineral Processing Systems. Publisher: Butterworth-Heinemann ...
    ... Ralston, J., Schulze, H.J., 1998. On modelling of bubble–particle attachment probability in flotation. International Journal of Mineral Processing 53, pp. 225–249 211. Nguyen A.V., 1998. Particle–bubble encounter probability with mobile bubble surfaces. International Journal of Mineral Processing, Vol ...

  • Strategic Environmental Assessment in the Application of Preventive Protection for Wind Farm Noise—Case Study: Maestrale Ring Wind Farm

    Boško D. Josimović, Aleksandar Cvjetić, Božidar Manić (2021)
    Determining the spatial position of wind turbines is the initial and most important phase in the development of a wind farm project. In this sensitive phase, all potential problems that may arise in the later stages of project development should be prevented by means of spatial and urban planning instruments. This makes it possible to achieve maximum use of the potential of wind in a particular space and, thus, fulfil the technical and economic requirements of the project while ...
    Energija,energetski inženjering i elektroenergetska tehnologija,obnovljivi izvori energije, održivost i životna sredina,električni i elektronski inženjering,kontrola i optimizacija,inženjering
    ... impact on individual locations Probability of Impact 100% I Impact certain Greater than 50% V Impact likely Less than 50% M Impact possible Frequency of Impact Occasional P Occasional impact Constant S Constant impact When formulating the objectives and indicators for assessing the impact ...
    ... , hospital zones and convalescent homes, cultural and historical sites, large parks 50 40 2 Tourist areas, camps and school zones 50 45 3 Residential areas 55 45 4 Business/residential and commercial/residential areas and children’s playgrounds 60 50 5 Town/city center, business, adm ...
    ... possible negative effects on human health, which Pedersen and Waye [30] classify into three groups: subjective effect (discomfort, disturbance and dissatisfaction); interference with certain daily activities (speech, sleep and learning); and physiological effect (anxiety, tinnitus, or in the worst ...

  • 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