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Упит dcterms_creator_txt:Bechtel A.

1503 items

  • The Reciprocal Algebraic Integers Having Small House

    Dragan Stankov (2021)
    Algebraic integer, the house of algebraic integer, maximal modulus, reciprocal polynomial, primitive polynomial, Schinzel-Zassenhaus conjecture, Mahler measure, method of least squares, cyclotomic polynomials

  • The Nooj System as Module within an Integrated Language Processing Environment

    Ranka Stanković, Duško Vitas, Cvetana Krstev (2008)
    NooJ, electronic dictionary, lexical resources
    ... we mean the techniques in which a query, serving as input to a document retriever, is transformed in some way in order to improve the performance of document retrieval. Namely, a search by a concept instead of a search by a single word form is recognized as a very important new direction in ...
    ... format, but also in textual, XML, tabular or TMX format. Figure 7. The part of a TMX document 4.2. Query Expansion Query expansion is a name given to a class of techniques in which a query serving as input to a document retriever is evolved in some way with the intent to improve the document ...
    ... function. It has also been shown how WS4LR can be applied to query expansion. Without such a tool the results of a query specified by a user in the search of a specific concept would be reduced to only a fraction of the results obtained by query expansion. Although WS4LR has been used mainly for ...

  • Terminology Acquisition and Description Using Lexical Resources and Local Grammars

    Cvetana Krstev, Ranka Stanković, Ivan Obradović, Biljana Lazić (2015)
    Acquisition of new terminology from specific domains and its adequate description within terminological dictionaries is a complex task, especially for languages that are morphologically complex such as Serbian. In this paper we present an approach to solving this task semi-automatically on basis of lexical resources and local grammars developed for Serbian. Special attention is given to automatic inflectional class prediction for simple adjectives and nouns and the use of syntactic graphs for extraction of Multi-Word Unit (MWU) candidates for ...
    ... an adjective (A) fol- lowed by a noun (N), where the two components agree in gender, number, case and animateness. In class names X stands for a component that does not inflect when a MWU inflects or for a component separator. In the case of AXN, X stands for the separator, usually a space. Some- ...
    ... AXN – an adjective followed by a noun; the adjective and the noun have to agree in all four grammatical categories; e.g. zemni gas ‘natural gas’. 2. 2XN – a noun preceded by a word that does not inflect in the MWU. Usually it is a word used only in one or a few MWUs, a prefix or an adverb derived from ...
    ... possible: a. NNgi - A noun followed by two adjec- tives/nouns in the genitive case or in the in- strumental case; e.g. otkopavanje širokim čelom ‘broad forehead excavation’. b. NprepNp - A noun followed by a preposi- tional phrase; e.g. lanac sa grabuljama ‘chain with a rake’. 5. AXN2X – a noun preceded ...

  • Synthesis and characterization of high-pressure and high-temperature sphene (CaTiSiO5)

    Jelena Pantić, Vladimir Urbanovich, Vesna Poharc-Logar, Bojan Jokić, Marija Stojmenović, Aleksandar Kremenović, Branko Matović (2014)
    Sphene (CaTiSiO5), a calcium titanosilicate ceramic has been prepared from a powder mixture of CaCO3, TiO2 and SiO2 using vibro-milling for homogenization and activation of precursors. During the highpressure and high-temperature synthesis (HPS) process at 4 GPa and 1,200 °C, sphene undergoes into phase transition, from room-temperature phase P21/a to high-temperature phase A2/a. Evidence of that structural phase transition is given in this paper using infrared, Raman spectroscopy and X-ray powder diffraction. Rietveld refinement was employed to get the ...
    Sphene, Phase transition, Raman spectroscopy, X-ray diffraction, SEM, IR

  • Towards a Mining Equipment Ontology

    Ranka Stanković, Ivan Obradović, Olivera Kitanović, Ljiljana Kolonja (2012)
    ... relation, which provides for a hierarchy among concepts as a hypernym is a more general term than its hyponym(s) and hence on a higher hierarchical level. As we have already mentioned, such hierarchical classification of concepts are taxonomies, usually represented by a tree structure. However, many ...
    ... generated for the FMG e-learning platform Moodle [11]. A RudOnto ontology could thus ultimately serve as a tool for generating a mining equipment ontology. In this paper we explain the initial steps towards such an ontology. In the next section we give a brief outline of terminological resources in general ...
    ... Ontology A formal representation of knowledge which includes the vocabulary containing a set of concepts, semantic relationships between those concepts and simple reasoning about a certain domain RudOnto Strong semantic description Weak semantic description Thesaurus A taxonomy ...

  • Building Terminological Resources in an e-Learning Environment

    Ranka Stanković, Ivan Obradović, Olivera Kitanović, Ljiljana Kolonja (2012)
    ... these concepts, and a simple reasoning mechanism related to a specific domain. Ontology A formal representation of knowledge which includes the vocabulary containing a set of concepts, semantic relationships between those concepts and simple reasoning about a certain domain RudOnto ...
    ... some other authors, a terminological resource qualifies for an ontology only if new knowledge can be derived from segments of knowledge already existing in the resource. According to this view. an ontology is a formal representation of knowledge, which includes a vocabulary with a set of concepts, ...
    ... semantic description Weak semantic description Thesaurus A taxonomy expanded to include additional semantic relationships Index a list of terms specific to a certain field Glossary an index containing definitions of terms Taxonomy A hierarchical organization of terms RudOnto Figure ...

  • Advantages and Disadvantages of a Parallel and Zigzag Method of Acquisition in Walking Mode in Magnetometric Archeological Research

    Mirko Petković, Vesna Cvetkov, Branislav Sretenović (2014)
    магнетометријска испитивања, цик-цак и паралелна аквизиција у ходајућем моду, линеарне аномалије, археологија
    ... gradiometer, with and without the Global Positioning System. To obtain a regular data grid, the sam- pling was conducted at a 1s interval, and with a distance between the traverses of 1m. The traverses for this process were oriented in a north-south and east-west direction. The best results or, more accurately ...
    ... Advantages and Disadvantages of a Parallel...(93-110) Fig. 3 Contour m ap of a vertical gradient of TM I in N -S orientation. K ey as for Fig 1. 97 Archaeology and Science 10 (2014)Petković et al - Advantages and Disadvantages of a Parallel...(93-110) Fig. 3a Contour map of a vertical gradient of TMI ...
    ... and Disadvantages of a Parallel...(93-110) Fig. 5 Contour m ap of a vertical gradient of TM I in E-W orientation. K ey as for Fig 1. Archaeology and Science 10 (2014) 100 Petković et al - Advantages and Disadvantages of a Parallel...(93-110) Fig. 5a Contour map of a vertical gradient of TMI ...

  • OntoLex Publication Made Easy: A Dataset of Verbal Aspectual Pairs for Bosnian, Croatian and Serbian

    Ranka Stanković, Maxim Ionov, Medina Bajtarević, Lorena Ninčević (2024)
    Ovaj rad predstavlja novi jezički resurs za pretraživanje i istraživanje verbalnih aspektnih parova u BCS (bosanskom, hrvatskom i srpskom), kreiran korišćenjem principa Lingvističkih Povezanih Otvorenih Podataka (LLOD). Pošto ne postoji resurs koji bi pomogao učenicima bosanskog, hrvatskog i srpskog kao stranih jezika da prepoznaju aspekt glagola ili njegove parove, kreirali smo novi resurs koji će korisnicima pružiti informacije o aspektu, kao i link ka aspektnim parovima glagola. Ovaj resurs takođe sadrži spoljne linkove ka monolingvalnim rečnicima, Wordnetu i BabelNetu. ...
    aspekt glagola, lingvistički otvoreni podaci, BCS

  • Fuzzy Model for Risk Assessment of Machinery Failures

    Dejan V. Petrović, Miloš Tanasijević, Saša Stojadinović, Jelena Ivaz, Pavle Stojković (2020)
    The main goal of this research was the development of an algorithm for the implementation of negative risk parameters in a synthesis model for a risk level assessment for a specific machine used in the mining industry. Fuzzy sets and fuzzy logic theory, in combination with statistical methods, were applied to analyze the time picture state of the observed machine. Fuzzy logic is presented through fuzzy proposition and a fuzzy composition module. Using these tools, the symmetric position of the ...
    fazi teorija, rizik, otkaz rudarskih mašina
    ... the following: • A maintainability function as a measurement for downtime; • Records of workplace injuries as a measurement of a failure’s impact on employees; • Measured levels of pollution as a measurement of a failure’s impact on the environment. The reliability function is a measurement of the ...
    ... following: • A risk assessment of partial indicators of element failure; • A risk level synthesis assessment of element failure; • A hierarchical synthesis of risk assessments for the technical system. A risk level assessment of subsystem failure is a synthesis assessment based on a risk assessment ...
    ... variables mentioned, is a triangle in this model (Figure 2). According to Ivezić et al. [26], membership functions should have a symmetric, triangular shape for more precise linguistic terms. A fuzzy model uses symmetric fuzzy sets, a symmetric layout, and symmetric inference. A symmetric approach is ...

  • Classification of Terms on a Positive-Negative Feelings Polarity Scale Based on Emoticons

    Mihailo Škorić (2017)
    The goal of this paper is to draw attention to the possibility of using emoticon-riddled text on the web in language-neutral sentiment analysis. It introduces several innovations in the existing framework of research and tests their effectiveness. It also presents a software tool especially made for that purpose, explains how it builds a database with sentimental value of terms and offers the user manual. Finally, it presents a software tool that tests the new database and gives some examples ...
    data mining, information extraction, emotions, text on the web
    ... Hyperlink beginnings http:// and https:// are replaced with a neu- tral character string yy, so that they wiil not be mistaken for :/ emoticon. Finally, regular expressions [a|h|A|H][a|h|A|H][h|H][a|A][h|H][a|h|A|H] and [h|H][a|A][h|H][a|A] are used to find as many different examples of expres- sion ...
    ... Serbian can use it independently, create a new database or use it for a new research. 3 A total of 143 users actually suggested a determiner, and the necessary number of proposers of a new determiner was 48, or more than one-third. If enough users suggested a determiner its value was calculated as the ...
    ... and that the machine can decide between multiple choices using a single parameter, task is reduced to deter- mination of what is positive and what is negative. With a goal of making a more cost-effective intelligent system, it would not be a good idea to ignore any available resources and that could po- ...

  • Formative evaluation of e-learning projects with the logical framework approach

    Roberto Linzalone, Giovani Schiuma, Ivan Obradović, Ranka Stanković (2015)
    ... Learning is the project. The project is a temporary endeavor undertaken to create a unique product or service [6]. From a managerial perspective it is a unique set of activities designed to produce a definite result, with a clear start and end date, and a clear allocation of resources [7] (Bowen ...
    ... graphical-textual model that takes the form of a Matrix (Logical Framework Matrix). According to the Logical Framework a program or a project is seen as a causal sequence of events. Actions to implement it are, in sequence: a. identification of project objectives; b. identification of causal r ...
    ... Evaluation of E-learning projects is a topic of great interest and growing importance. The evaluation of a project is the construction of the overall judgement, based on a quali-quantitative determination of the benefits and costs associated, with scientific criterion, of a project (evaluand). The purposes ...

  • A Knowledge-Based Approach to Mine Ventilation Planning in Yugoslav Mining Practice

    Nikola Lilić, Ivan Obradović, Ranka Stanković (2002)
    Ventilation system analysis is a complex process based on the calculation and analysis of numerous parameters. These problems can be successfully solved by the SimVent numerical package, but a full understanding and use of the obtained results require the involvement of an experienced specialist in the ventilation field. The solution was found in the creation of a hybrid system INVENTS, whose knowledge base represents a formalization of the expert knowledge in the mine ventilation field. In this paper, we ...
    ... either a negative value of resistance (requiring the introduction of a fan) in a branch with predetermined air flow or a recirculation through a loss branch is detected after the calculation of air flow distribution in the ventilation network, the fitness of that particular solution gets a very high ...
    ... / s 3 - ex p lo it at io n w o rk p la ce - in ta ke a ir - re tu rn a ir - st o p p in g w it h d o o r - m ai n f an F ig . 1 4 . T h e a ir d is tr ib u ti o n o b ta in ed b y st a n d a rd m et h o d . M in . R es . E n g . 2 0 0 2 .1 1 :3 6 1 -3 ...
    ... rl d sc ie n ti fi c. co m b y U N IV E R S IT Y O F A L B E R T A o n 0 4 /2 6 /1 5 . F o r p er so n al u se o n ly . A Knowledge-Based Approach to Mine Ventilation Planning 363 introduction of a knowledge base, thus upgrading existing mathematical models with ...

  • Rule-based Automatic Multi-word Term Extraction and Lemmatization

    Ranka Stanković, Cvetana Krstev, Ivan Obradović, Biljana Lazić, Aleksandra Trtovac (2016)
    In this paper we present a rule-based method for multi-word term extraction that relies on extensive lexical resources in the form of electronic dictionaries and finite-state transducers for modelling various syntactic structures of multi-word terms. The same technology is used for lemmatization of extracted multi-word terms, which is unavoidable for highly inflected languages in order to pass extracted data to evaluators and subsequently to terminological e-dictionaries and databases. The approach is illustrated on a corpus of Serbian texts from ...
    term extraction, terminology, multi-word units, lemmatization, finite-state transducers
    ... evaluation of results is to follow and if the approved MWT is to be entered into some kind of a dictionary or a terminological data-base. In this case we need a lemmatized MWT, that is, a MWT in the form of a dictionary head-word. The problem of lemmatization of special kind of MWUs, 507 ...
    ... number, case and animateness, belong to the AXN class. X stands for a component that does not inflect when the MWU inflects or a separator, usually a space or a hyphen. Nominal MWUs in Serbian belong to one of several tens of different general classes, but 14 of these classes account for ...
    ... lemmas. For instance, in the case of 2-component MWUs the order of precedence of graphs is: AXN, 2XN (a noun preceded by a word that does not inflect in the MWU), N2X (a noun followed by a word that does not inflect in the MWU), NXN. Thus, two MWU forms mašine taložnice and korita trake ‘belt ...

  • 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
    ... ‘beer’ and ниво ‘level’ would be accepted. A few examples of the application of this procedure are given in Table 1. Special attention is paid to hyphenated words. A hyphen in a Serbian OCR text can signify a word hyphenated at the end of the line or a hyphen in a multi-word. Our procedure first eliminates ...
    ... performed. Table 2. A FST that initiates a correction for a specific replacement pair (top). A generic FST that performs a certain type of replacement (bottom). two words: the original, input word ($1$Y) and the corrected, output word ($1$X).4 The application of these FSTs always leaves in a processed texts ...
    ... multiple candidates for sto (sto ‘table/hundred’ and što, a functional word that can be an adverb, a pronoun or a conjunc- tion); – A list of 50 most frequent bigrams obtained from the SrpKor in which at least one word would contain letters c, s, z or a digraph dj if diacritics were removed; for instance ...

  • 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
    ... language, a terminology extractor for a target language, and a tool for word and chunk alignment. In this first experiment a source language is English, a target language is Serbian, a domain is Library and Information Science for which a bilingual terminological dictionary exists. Our term extractor ...
    ... 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 ...
    ... which a source part of a chunk matches a term from a list of domain terms in a source language: S(align.chunk) ∼ S(term.list), where symbol ∼ denotes the relation “match” (that is for our ex- periment defined in Subsection 4.5.); • Filtering once more previously filtered chunks to those in which a target ...

  • 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
    ... example. If a noun has a complement that affects its meaning, the complement should be represented in the example: Tada se javila u njega velika ljubav i velika podobnost za slikarstvo (paraphrase: ‘In that moment he felt a great affection and a great talent for painting’)3. If a keyword is a verb that ...
    ... only in paper form. At the same time, a formal description of dictionary entry was produced, and a lexical database model was developed (Stanković et al., 2018). The conversion of the SASA dictionary from unstructured text into a lexical database consisted of a thorough analysis of formatting conventions ...
    ... syntactic whole – with a subject and a predicate. It is even possible to add a missing sentence constituent, but it has to be in square brackets, as a mark of this kind of editorial intervention. (Though the excerpts are in the form of full sentences, the context they provide is sometimes insufficient, and ...

  • 2D geoelectrical resistivity tomography application at the former city waste dump "Ada Huja": Eco-geological problem

    Branislav Sretenović, Filip Arnaut, Ivana Vasiljević, Vesna Cvetkov (2019)
    2D inversion, geoelectrical method, Wenner array, ecology, Ada Huja
    ... profile line I has a length of 124 m (Figure 4). A high value resistivity zone with a length of 56 m (252 m to 308 m of the profile line) can be noticed and it represents most likely sand, gravel and other construction materials. Decomposed waste has a lens-like geometry and retains a low resistivity ...
    ... exhibited data, and looking at the 2017 methane stimulated fire at the landfill “Vinča“, which posed a threat to a million and a half inhabitants of Belgrade, such a mini-plant would not be a enormous investment. Daily production of waste for the city of Belgrade reaches 1700 tones (Mitrović, 2014) ...
    ... reflection is noticed that could indicate a horizontal interface, that was not detected with the geoelectrical scanning method. Acquired borehole data indicated a presence of subsurface water at a depth of around 5 m (Figure 5, middle) which makes a good reflective surface that divides two di ...

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

    Ivan Obradović, Ranka Stanković, Olivera Kitanović, Jelena Prodanović (2011)
    ... contains a short definition of the term in both languages, but without any relations between equivalents. An example of a dictionary entry, in English, and then in Serbian, is: geodatabase (GDB), A collection of geographic datasets of various types held in a common file system folder, a Microsoft ...
    ... support system. Hence, a decision was made to introduce Moodle to the already existent blended learning system at FMG. Moodle is a free and open source (published under the GNU Public License) LMS (Learning Management System) platform. From a technical point of view, it is a web application ...
    ... motivation for introducing a blended learning system came from the fact that in traditional face-to-face learning, the students were prone to taking a basically passive role. Thus the new learning system was aimed at turning the student role in the learning process to a more active one, and enhancing ...

  • Medical Domain Document Classification via Extraction of Taxonomy Concepts from MeSH Ontology

    Mihailo Škorić, Mauro Dragoni (2019)
    This paper is a result of a task that was presented to attendants of Keyword Search in Big Linked Data summer school, that was organized by Vienna University of Technology, under the Keystone COST action in the summer of 2017. It presents a specific approach to the classification via creation of minimal document surrogates based on the US National medical library’s MeSH ontology, which is derived from the Medical Subject Headings thesaurus. In a series of previously classified medically ...
    document classification, MeSH, ontology, information extraction
    ... set of terms from document Di, and Sj is a set of terms from document Dj , then this index can be defined as a double the number of common terms divided with the total number of terms in both documents (if S is a set, |S| is a number of terms in that set). If documents do not have any common terms then ...
    ... identified with a maximum of four repetitions (if they have more than eight blocks) of a term denoting a class. After applying these steps, only class identifiers now appear in document surrogates, which should be easily counted. After the test sets have been successfully created, a simple program is ...
    ... eca.2019.19.1.3 ABSTRACT: This paper is a result of a task presented to attendants of Keyword Search in Big Linked Data summer school, that was organized by Vienna University of Technology, under the Keystone COST action in the summer of 2017. It presents a specific approach to the classification via ...

  • Asbestos-Based Pottery from Corsica: The First Fiber-Reinforced Ceramic Matrix Composite

    Philippe Colomban, Aleksandar Kremenović (2020)
    Asbestos-containing pottery shards collected in the northeast of Corsica (Cap Corse) and dating from the 19th century, or earlier, have been analyzed by SEM-EDS, XRPD, FTIR and Raman microspectroscopy. Blue (crocidolite) and white (chrysotile) asbestos fiber bundles are observed in cross-sections. Most of the asbestos is partly or totally dehydroxylated, and some transformation to forsterite is observed to occur, indicative of a firing above 800 C. Examination of freshly fractured pieces shows a nonbrittle fracture with fiber pull-out, consistent with ...
    asbestos, CMC, Corsica, fiber, pottery
    ... of a firing; above 800 "C. Examination of freshly fractured pieces shows a nonbrittle fracture with fiber pull-out, consistent with a composite material behavior, which makes these ceramics the oldest fiber-reinforced ceramic matrix composite. Residues indicate the use of this pottery as a crucible ...
    ... fracture of a ceramic gives rise to a brittle edge, and fracture initiation depends upon the defects and their distribution in the matrix. It is thus difficult to design the shape and mechanical strength of a ceramic object. However, the association of two brittle materials, i.e., a composite material ...
    ... Coarse grains (up to 5 mm) are mixed in a rather homogeneous matrix of a high open porosity (~30%). Table 1. Oxide composition measured by SEM-EDS on spots indicated in Figure 1 for samples a to c. Characteristic values in bold. Sample b Sample c Sample a Sample d Oxide «0» «» «3» «60» «l» «6» ...