Претрага
94 items
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The role of non-covalent intermolecular interactions on the diversity of crystal packing in supramolecular dihalopyridine–silver(i) nitrate complexes
Sunčica Roca, Lucija Hok, Robert Vianello, Mladen Borovina, Marijana Đaković, Ljiljana Karanović, Dražen Vikić-Topić, Zora Popović (2020)Six novel 1 : 2 complexes of silver(I) nitrate with 2,5-, 2,6- and 3,5-dihalopyridines (halo stands for chlorine and bromine) were prepared by the reaction of an aqueous solution of AgNO3 and the corresponding pyridine derivative in a water–alcohol solution. In spite of having analogous empirical formulae, they reveal intriguing structural differences, except [Ag(NO3)(2,5-Cl2py)2]n (1) and [Ag(NO3)(2,5-Br2py)2]n (4), which are isostructural. In contrast, [Ag(NO3)(3,5-Cl2py)2]2 (3) is dimeric, while its Br analogue [Ag(NO3)(3,5-Br2py)2]n (6) is polymeric in nature, being the ...Sunčica Roca, Lucija Hok, Robert Vianello, Mladen Borovina, Marijana Đaković, Ljiljana Karanović, Dražen Vikić-Topić, Zora Popović. "The role of non-covalent intermolecular interactions on the diversity of crystal packing in supramolecular dihalopyridine–silver(i) nitrate complexes" in CrystEngComm, Royal Society of Chemistry (RSC) (2020). https://doi.org/10.1039/D0CE01257B
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VENTEX: An Expert System for Mine Ventilation Systems Analysis
Analiza sistema za ventilaciju je komleksan proces, koji bazira na proračunu brojnih parametara, koji se odnose na: stanje mreže, provetrenost, stabilnost sistema, gubitke vazduha, klimatske uslove, gasno stanje, ugroženost od požara i opasne prašine. Navedeni problemi se uspešno rešavaju paketom SimVent, ali potpuno razumevanje i korišćenje dobijenih rezultata zahteva angažovanje iskusnog specijaliste iz oblasti ventilacije. Rešenje je nađeno u kreiranju ekspertnog sistema VENTEX, čija je baza znanja formalizacija ekspertskog znanja iz oblasti ventilacije rudnika. U radu je prikazana metodologija ...... using a modification of the Coad- Yourdon object-oriented analysis (OOA) model (Coad and Yourdon, 1991). In the classical model every real world entity is represented by a class (object) consisting of its name, attributes and methods pertaining to the procedures related to the object. In order ...
... represented by objects that can be either classes or instances within classes. The relationships among the objects in a model can be represented by linking them together into a hierarchical structure. Thus the modified OOA model based on the strategy for evaluation of the general ventilation state ...Ranka Stanković, Nikola Lilić, Ivan Obradović. "VENTEX: An Expert System for Mine Ventilation Systems Analysis" in YU Info '96 Brezovica, Društvo za informacione sisteme i računarske mreže (1996)
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Business Models for Small-scale Biomass Projects Development
Biomass is recognized as the most promising renewable energy source in Serbia. The share of biomass in Serbian final energy consumption is over 10%, but mostly related to traditional use in stoves and ovens. One of the main obstacles for wider implementation of contemporary biomass facilities is the inexperience of consumers and stakeholders in the implementation of “innovative” business models, especially in the cases of small-scale projects. In this paper, three different business models (public utility company, energy cooperative ...... and/or cogeneration plants (depending on the selected solution). Certainly, local households, individually or jointly in a cooperative or other legal entity, should not have preferential treatment in the public procurement procedure. However, it is well known that transport costs have significant share ...
... price of biomass, and from that point of view, local biomass producers would be in a better position. Energy cooperative model Cooperative is a legal entity that represents a special form of organization, which by functioning based on cooperative principles, achieves its economic, social, cultural and other ...
... cooperative [8] Energy cooperative model is primarily interesting for development of district heating system in Kostojevići. Energy cooperative as legal entity would provide financial resource for boiler installation. Resources would be provided from cooperative fund. Cooperative would organize biomass collecting ...Dejan Ivezić, Miodrag Gluščević, Marija Živković. "Business Models for Small-scale Biomass Projects Development" in 19th International Conference on Thermal Science and Engineering of Serbia, Niš : Faculty of Mechanical Engineering (2019)
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A Mathematical Learning Environment Based on Serbian Language Resources
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 ...... used for a number of various language processing related tasks including query expansion, they need further improvement for management, named entity recognition, terminology extraction, and document indexing of mathematical content. In the next section we give and overview of the MLES ...
... formats of user requests, effective matching and relevance ranking, and features a user friendly interface. There are also possibilities of linking to BAEKTEL - an Open Educational Resources (OER) platform under edX [2], as well as relevant educational courses under a Moodle platform [3] ...Radojičić Marija, Obradović Ivan, Stanković Ranka, Utvić Miloć, Kaplar Sebastijan. "A Mathematical Learning Environment Based on Serbian Language Resources" in Proceedings of the 7th International Scientific Conference Technics and Informatics in Education, Faculty of Technical Sciences, Čačak (2018)
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GIS Application Improvement with Multilingual Lexical and Terminological Resources
... geodatabase on MS SQL server. The logical framework of GeolISS implementation is based on five packages of classes: concept, observation, spatial entity, description and metadata (Blagojević et al., 2008). Concept represents the core of GeolISS, and is implemented as an aggregation of geological ...
... Observation implements field data records and measurements, the basis for classification, interpretation and modeling of geological features. Spatial entity is treated as observation location and mapped/interpreted geological occurrence, and implemented in the geodatabase geometrically by points, ...
... annotation is the text or graphics on a map that provide substantial information for the map reader. Annotation may identify or describe a specific map entity, provide general information about an area on the map, or supply information about the map itself. In general, the placement of descriptive text ...Ranka Stanković, Ivan Obradović, Olivera Kitanović. "GIS Application Improvement with Multilingual Lexical and Terminological Resources" in Proceedings of the 5th International Conference on Language Resources and Evaluation, LREC 2010, Valetta, Malta, May 2010, Valetta, Malta : European Language Resources Association (2010)
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Production information system of the Pljevlja coal mine
Božo Kolonja, Ranka Stanković, Filip Vuković . "Production information system of the Pljevlja coal mine" in Mine Planning and Equipment Selection 2000, Routledge (2018). https://doi.org/10.1201/9780203747124-154
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Improvement of geodatabase queries within GeolISS
Ranka Stanković (2008)... e on MS SQL server 2000. The logical framework of GeolISS implementation is based on five packages of classes: concept, observation, spatial entity, description and metadata [6]. Concept represents the core of GeolISS, and it is implemented as an aggregation of geological vocabularies, collections ...
... interpretations and modeling of geological features. Any observed property can be expressed as a text, number, picture and geometry (location). Spatial entity, which is treated as observation locations and mapped/interpreted geological occurrences, are implemented in the geodatabase geometrically as points ...
... 4 depicts the form for spatial object search for geologic unit outcrop ‘IzdanakKartiraneJedinice’, but in general it can be used for any spatial entity: borehole, well, geologic surface path etc. The user selects among the search criteria offered, in our example, for the geologic unit ‘Kartirane ...Ranka Stanković. "Improvement of geodatabase queries within GeolISS" in Review of the National Center for Digitization, Beograd : Faculty of Mathematics, Belgrade (2008)
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Machine Learning and Deep Neural Network-Based Lemmatization and Morphosyntactic Tagging for Serbian
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 ...... and named en- tities (NEs) (Verne, Švejk, Floods, History). Since the taggers developed within this research tagged only simple words these complex units had to be decom- posed into simple words. For instance, Devetnaesti vek ‘Nineteenth century’ which was tagged as tempo- ral named entity had ...
... (simple- and multi-word units) and a grammar for named entity tag- ging (Krstev et al., 2014) was produced, and it used Condi- tional Random Fields (Constant et al., 2018). Its major nov- elty was tagging of not only simple words, but also MWUs and named entities. However, it did not perform lemmati- ...
... known as Part-of-Speech tagging (PoS-tagging). PoS-tagging precedes many other Natural Language Processing tasks, such as Text Classi- fication, Named Entity Recognition, Sentiment Analysis, Question Answering, etc. Computer programs that perform this task, the so-called ‘taggers’, can be based on ...Ranka Stanković, Branislava Šandrih, Cvetana Krstev, Miloš Utvić, Mihailo Škorić. "Machine Learning and Deep Neural Network-Based Lemmatization and Morphosyntactic Tagging for Serbian" in Proceedings of the 12th Language Resources and Evaluation Conference, May Year: 2020, Marseille, France, European Language Resources Association (2020)
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Infotheca (Q25460443) in Wikidata
Ranka Stanković, Lazar Davidović (2021)Vikipodaci su baza znanja Zadužbine Vikimedija koja predstavlja zajednički izvor različitih vrsta podataka koje koriste ne samo drugi Vikipedijini projekti, već sve više i brojne aplikacije semantičkog veba. U ovom radu ćemo prezentovati primer integracije Vikipodataka sa digitalnim bibliotekama i eksternim sistemima, kao i mogućnost ubrzanja pripreme i unosa podataka na primeru radova iz časopisa za digitalnu humanistiku Infoteka.... in the domain of natural language processing. Let’s mention some of them: text classification, indexing, text analysis, summarizing, nor- malizing, linking, etc. Another important feature is multilingual support, making it possible to link each item to a label in any language registered in Wikimedia resources ...
... step refers to the choice of Wikidata labels that will be used to identify the predicate and creating a data entry outline. The outline defines the linking of a value to an item, namely, a subject via predicate as a mediator. Although the ultimate aim was the entry of data about articles, entering information ...
... OpenRefine project and loading the prepared data. What comes next is recognition of the existing Wikidata items – an indis- pensable step enabling the linking of file content to identifiers (QID) of the existing items and entry of new ones, if they do not already exist. In this phase, manual checking and ...Ranka Stanković, Lazar Davidović. "Infotheca (Q25460443) in Wikidata" in Infotheca, Faculty of Philology, University of Belgrade (2021). https://doi.org/10.18485/infotheca.2021.21.1.5
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Развој геолошког терминолошког речника ГеолИССТерм
... class Entitet (Entity) comprises instances of all spatial and classes of attributes and also their subclasses, namely sub- types. Among the metadata provided by the rela- tionship class SvojstvoEntiteta (EntityProperty) is the domain (Figure4). The instances of the class Entitet (Entity) are for ...
... vol XII, August 2011 rANkA STANkOvIć eT Al. ‒ The DevelOPmeNT OF The geOlISSTerm TermINOlOgIcAl DIcTIONAry gual. In the case of a multilingual linking of terms, parallel multilingual or bilingual lists, namely, lists of paired terms are often made. These lists usually do not contain definitions ...
... disciplines by using geolISS. The development of the electronic dictionary of geologic terms intensified in 2008 as part of a separate geolISS project named The Develop- ment of Geologic Terminology and Nomencla- ture for the Geologic Database of Serbia. The goal of this project was to add information ...Ranka Stanković, Branislav Trivić, Olivera Kitanović, Branislav Blagojević, Velizar Nikolić. "Развој геолошког терминолошког речника ГеолИССТерм" in INFOteka: časopis za informatiku i bibliotekarstvo, Beograd : Zajednica biblioteka univerziteta u Srbiji (2011)
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Development of Open Educational Resources (OER) for Natural Language Processing
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 ...... ve grammas. These enable construction of grammars for shallow parsing. The illustration of context use is presented by recognition of one named entity class. 9. The problems and solutions of multi-word unit (MWU) recognition are presented with emphasis on e-dictionaries of nominal MWUs ...
... transformation. Each graph in a cascade is a transducer that transforms a text. A graph that follows works on this transformed input. A full Named Entity Recognition System for Serbian is presented as an illustration. Didactic criteria Course combines different types of learning materials ...
... retrieval, sentiment analysis and semantics, discourse, machine translation, regular expressions, language models, text classification, and name entity recognition. All of them combine textual and video lectures with quizzes and assignments for self-evaluation. There are also courses in Italian ...Cvetana Krstev, Biljana Lazić, Ranka Stanković, Giovanni Schiuma, Miladin Kotorčević. "Development of Open Educational Resources (OER) for Natural Language Processing" in The Sixth International Conference on e-Learning (eLearning-2015), September 2015, Belgrade, Serbia, Belgrade : Belgrade Metropolitan Univesity (2015)
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Characterization of Natural Clay from Bogovina (Serbia) and Possible Utilization in Sorption of the Herbicides
... employees' publications. - The Repository is available at: www.dr.rgf.bg.ac.rs Call for contributions Clean water and sanitation & Life on land Linking soil mineralogy to soil properties and functions EUROSOIL2020CONT-1798 CHARACTERIZATION OF NATURAL CLAY FROM BOGOVINA (SERBIA) AND POSSIBLE UTILIZATION ...Lazar Kaluđerović, Zorica Tomić, Rada Đurović-Pejčev, Maja Milošević. "Characterization of Natural Clay from Bogovina (Serbia) and Possible Utilization in Sorption of the Herbicides" in Eurosoil2020, online event 2021, Eurosoil, Frontiers Abstract Book (2021)
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Geologic Information System of Serbia
Geologic information system of Serbia (GeolISS) represents repository for digital archiving, query, retrieving, analysis and geologic data visualization. The GeolISS is implemented through ESRI ArcGIS technology, and is designed to operate as a personal geodatabase (MS Jet 4.0 Engine) and SDE enterprise geodatabase in MS SQL Server. The objective of GeolISS implementation is integration of existing geologic archives, data from published maps at different scales, newly acquired field data, as well as Web publishing of geologic information. Physical implementation ...... au/ http://www.isotc211.org/ Logical framework of GeolISS implementation is based on five elements: Concept, Observation, Description, Spatial entity – Features and Metadata, mutually linked with relationships. Concept represent the core of GeolISS that is implemented as compilation of geologic ...Branislav Blagojević, Branislav Trivić, Ranka Stanković, Nenad Banjac, Olivera Kitanović. "Geologic Information System of Serbia" in Proceedings of the 17th Meeting of the Association of European Geological Societies, 14.-18. september 2011., Beograd : Srpsko geološko društvo (2011)
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EUROLAN 2021: Introduction to Linked Data for Linguistics Online Training School
Prva škola za obuku polaznika koju je organizovala COST akcija NexusLinguarum održana je od 8. do 12. februara 2021. godine sa ciljem da studenti, istraživači i stručnjaci nauče osnove lingvističke nauke o podacima. Tokom obuke polaznici su se upoznali sa širokim spektrom tema: od semantičkog veba, RDF -a i ontologija, do modeliranja i pretraživanja jezičkih podataka pomoću najsavremenijih ontoloških modela i alata. Škola je održana u okviru serije letnjih škola EUROLAN-a i organizovalo ju je virtuelno (onlajn) nekoliko instituta; ...nauka o lingvističkim podacima, povezani podaci u lingvistici, jezički podaci, EUROLAN, NexusLinguarum, COST akcija, škola za obuku... teachers and students of linguistics, NLP and information technology to discuss the principles and best practices for repre- senting, publishing and linking linguistic data and the issues that constitute the building blocks in the envisioned multilingual and interoperable web- oriented ecosystem. The present ...
... Romanian culture, traditions and nature. The fifth day comprised three parallel sessions on different topics: (i.) LLD Generation/Transformation and Linking, (ii.) Annotations (NIF, Web Annotation) (Hellmann et al. 2013), and (iii.) OntoLex extensions: vartrans for representing translations and term variants ...Milan Dojchinovski, Julia Bosque Gil, Jorge Gracia, Ranka Stanković. "EUROLAN 2021: Introduction to Linked Data for Linguistics Online Training School" in Infotheca, Faculty of Philology, University of Belgrade (2021). https://doi.org/10.18485/infotheca.2021.21.1.7
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Terminological and lexical resources used to provide open multilingual educational resources
Open educational resources (OER) within BAEKTEL (Blending Academic and Entrepreneurial Knowledge in Technology enhanced learning) network will be available in different languages, mostly in the languages of Western Balkans, Russian and English. University of Belgrade (UB) hosts a central repository based on: BAEKTEL Metadata Portal (BMP), terminological web application for management, browse and search of terminological resources, web services for linguistic support (query expansion, information retrieval, OER indexing, etc.), annotation of selected resources and OER repository on local edX ...... fs4v. The first part of entry is a lemma: učiteljica. N is a sign noun (part of speech), 651 is an inflectional class, +Hum is a marker for human entity and +GM is a marker for gender. After that, there is a part of entry for grammatical categories. F is gender feminine, s is sign for number - singular ...
... singular, nominative case and animate. Akušer is also male, singular, nominative case and animate noun. There are markers for a compound noun and human entity. According to data from 2014, Serbian morphological dictionary of simple words consists of 133,361 lemmas. Their production is 4,581,657word forms ...Biljana Lazić, Danica Seničić, Aleksandra Tomašević, Bojan Zlatić. "Terminological and lexical resources used to provide open multilingual educational resources" in The Seventh International Conference on eLearning (eLearning-2016), 29-30 September 2016, Belgrade, Serbia, Belgrade : Belgrade Metropolitan University (2016)
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An intelligent hybrid system for surface coal mine safety analysis
Nikola Lilić, Ivan Obradović, Aleksandar Cvjetić. "An intelligent hybrid system for surface coal mine safety analysis" in Engineering Applications of Artificial Intelligence (2010)
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Razvoj ARCGIS geobaze površinskog kopa korišćenjem UML CASE alata
... geodatabase represents a collection of interrelated data, namely: attributes (data describing a geographic entity numerically or textually), geometry (data defining the shape and size of an entity and its position in space) and topology (data defining relations between different geographic entities) ...
... built-in system for storing and indexing both alphanumeric and geometric data. The Irish company ESRI2 created one of the most complex GIS platforms named ArcGIS®. This integrated software family provides all functions necessary for developing a geographic information system. ArcGIS encompasses a palette ...Aleksandra Tomašević, Ljiljana Kolonja, Ivan Obradović, Ranka Stanković, Olivera Kitanović. "Razvoj ARCGIS geobaze površinskog kopa korišćenjem UML CASE alata" in Podzemni radovi, Beograd : Univerzitet u Beogradu - Rudarsko-geološki fakultet (2012)
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Named Entity Recognition for Distant Reading in ELTeC
Francesca Frontini, Carmen Brando, Joanna Byszuk, Ioana Galleron, Diana Santos, Ranka Stanković (2020)Akcija COST „Udaljeno čitanje za evropsku književnu istoriju“, koja je počela 2017. godine, ima među svojim glavnim ciljevima stvaranje višejezične zbirke evropskih književnih tekstova (ELTeC) otvorenog koda. U ovom radu predstavljamo rad koji je obavljen na ručnom označavanju selekcije ELTeC kolekcije za imenovane entitete, kao i na proceni postojećih alata za prepoznavanje imenovanih entiteta u pogledu njihove sposobnosti da automatski urade takve anotacije. U poslednjem paragrafu se razmatraju zajedničke tačke između ove inicijative i CLARIN-a.... Измењено: 2023-10-14 04:19:44 Named Entity Recognition for Distant Reading in ELTeC Francesca Frontini, Carmen Brando, Joanna Byszuk, Ioana Galleron, Diana Santos, Ranka Stanković Дигитални репозиторијум Рударско-геолошког факултета Универзитета у Београду [ДР РГФ] Named Entity Recognition for Distant ...
... access, as well as the employees' publications. - The Repository is available at: www.dr.rgf.bg.ac.rs Annotation and Visualization Tools 37 Named Entity Recognition for Distant Reading in ELTeC Francesca Frontini P ra x il in g C N R S U n iv e rs i te P a u l-V a le ry M o n tp e llie r ...Francesca Frontini, Carmen Brando, Joanna Byszuk, Ioana Galleron, Diana Santos, Ranka Stanković. "Named Entity Recognition for Distant Reading in ELTeC" in CLARIN Annual Conference 2020, Oct 2020, Virtual Event, France, CLARIN (2020)
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Managing mining project documentation using human language technology
Purpose: This paper aims to develop a system, which would enable efficient management and exploitation of documentation in electronic form, related to mining projects, with information retrieval and information extraction (IE) features, using various language resources and natural language processing. Design/methodology/approach: The system is designed to integrate textual, lexical, semantic and terminological resources, enabling advanced document search and extraction of information. These resources are integrated with a set of Web services and applications, for different user profiles and use-cases. Findings: The ...Digital libraries, Information retrieval, Data mining, Human language technologies, Project documentationAleksandra Tomašević, Ranka Stanković, Miloš Utvić, Ivan Obradović, Božo Kolonja . "Managing mining project documentation using human language technology" in The Electronic Library (2018). https://doi.org/10.1108/EL-11-2017-0239
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FrameNet Lexical Database: Presenting a Few Frames Within the Risk Domain
U radu se daje kratak prikaz teorije semantike okvira, na kojoj je zasnovana leksička baza Frejmnet. Predstavljena je koncepcija ove mreže, kao i mogućnosti njene primene. Predstavljena je i leksička analiza koja se primenjuje u projektu izrade Frejmneta i ukazano na razlike između analize zasnovane na okviru u odnosu na analizu zasnovanu na reči. Zatim je prikazano nekoliko povezanih okvira koje prizivaju reči iz domena rizika. U radu je predstavljena i platforma NLTК pomoću koje se mogu koristiti ...... fact that most LUs are best defined through semantic frames, a conceptual structure that provides a description of the type of situation, relation or entity and the participants involved in it (Ruppenhofer et al. 2016, 7). For example, taking a risk typically involves the following: a person taking the ...
... unique and set it apart from other frames. Alongside the core elements, there are non-core 7. That description entails:1) a schematic description of entity types or situation illustrated by the frame; 2) choosing descriptive labels for describing the frame; 3) drawing up a draft list of words that belong ...
... information from it. As mentioned in the Introduction (Section 1.1 of this paper), a frame is a conceptual structure describing a type of situation, entity or relation together with its participants. The structure of FrameNet within the NLTK framework is comprised of a collection of XML (Extensible Markup ...Aleksandra Marković, Ranka Stanković, Natalija Tomić, Olivera Kitanović. "FrameNet Lexical Database: Presenting a Few Frames Within the Risk Domain" in Infotheca, Faculty of Philology, University of Belgrade (2021). https://doi.org/10.18485/infotheca.2021.21.1.1