Претрага

Упит dcterms_subject_txt:Knowledge management

416 items

  • A comparison between ARIMA, LSTM, ARIMA-LSTM and SSA for cross-border rail freight traffic forecasting: the case of Alpine-Western Balkan Rail Freight Corridor

    Miloš Milenković, Miloš Gligorić, Nebojša Bojović, Zoran Gligorić (2023)
    železnica, prekogranični teretni saobraćaj, ARIMA, LSTM, SSA

  • Određivanje zbijenosti starog komunalnog otpada

    Jovana Janković, Dragoslav Rakić, Irena Basarić Ikodinović, Tina Đurić (2021)
    Bez obzira na savremene tretmane komunalnog otpada u svetu, u Srbiji je i dalje najčešći vid odlaganja na komunalne deponije, pa zbijanje otpada predstavlja jednu od ključnih faza formiranja deponije. Na ovaj način znatno se smanjuje zapremina otpada, ubrzava proces degradacije i produžava radni vek deponije. Zbog toga su geotehničke karakteristike komunalnog otpada prilikom zbijanja, veoma bitne kako u fazi projektovanja tako i u fazi izgradnje deponije i optimizacije prostora. Tu se pre svega misli na maksimalnu suvu zapreminsku ...
    komunalni otpad, deponija, Proktorov opit, optimalna vlažnost, maksimalna suva zapreminska težina

  • Resource-based WordNet Augmentation and Enrichment

    Ranka Stanković, Miljana Mladenović, Ivan Obradović, Marko Vitas, Cvetana Krstev (2018)
    In this paper we present an approach to support production of synsets for SerbianWordNet(SerWN)byadjustingPrincetonWordNet(PWN)synsetsusing several bilingual English-Serbian resources. PWN synset definitions were automatically translated and post-edited, if needed, while candidate literals for Serbian synsets were obtained automatically from a list of translational equivalents compiled form bilingual resources. Preliminary results obtained from a setof1248selectedPWNsynsetsshowthattheproducedSerbiansynsetscontain 4024 literals, out of which 2278 were offered by the system we present in this paper, whereas experts added the remaining 1746. Approximately one half of ...
    WordNet, bilingual resources, term alignment, parallel lists
    ... Stanković, R., Obradović, I., Kitanović, O., and Cvjetić, A. (2016). Development of terminological resources for expert knowledge: a case study in mining. Knowledge Management Research & Practice, 14(4):445–456. Kovačević, L., Injac, V., and Begenišić, D. (2004). Bibliotekarski terminološki rečnik: ...
    ... Lexicons and Ontologies: Mapping WordNet to the Suggested Upper Merged Ontology. Proceedings of the IEEE International Conference on Information and Knowledge Engi- neering, pages 412–416. Oliver, A. and Climent, S. (2014). Automatic creation of wordnets from parallel corpora. In Chair), N. C. C., Choukri ...
    ... bg.ac.rs/ 8http://baektel.eu/ 9http://eurovoc.europa.eu/ Proceedings of CLIB 2018 107 Office, which moved forward to ontology-based thesaurus management and semantic web technologies compliant to W3C recommendations, as well as latest trends in thesaurus standards. For this research we used the ...

  • Classification of mining waste landfills according to legislation in Serbia

    Dragana Nišić, Uroš Pantelić, Nikoleta Aleksić, Neda Nišić (2021)
    rudarski otpad, jalovina, uredba, deponija, kategorija A, klasifikacija
    ... classify landfills, while Serbia has included this practice in its legislation by adopting the Bylaw on the conditions and procedure for issuing waste management permits, as well as criteria, characteri- zation, classification and reporting on mining waste in 2017. As the implementation of the Bylaw began ...
    ... suggested on several occasions through the classification process. By applying the cla- ssification on a specific example of flotation tailings management facility of copper mine, it was found that the realistic risk-based classification of landfills requires a very detailed analysis of all criteria ...

  • Analiza obrazovnog sistema i kadrovskog potencijala Republike Srbije u oblasti rudarstva i geologije

    Dragan Ignjatović, Stevan Đenadić, Predrag Jovančić, Filip Miletić, Jovana Mitrović (2024)
    Adekvatno postavljen i kontinualno unapređivan sistem obrazovanja predstavlja jasan preduslov za razvoj pojedinca, društva i države u celini. Sistem obrazovanja u Republici Srbiji davno je postavljen, a reforme nisu do kraja sprovedene. Posebno je to izraženo u visokom obrazovanju gde reforma po bolonjskom sistemu nije do kraja sprovedena ili je negativno zloupotrebljena. Trenutno je sistem obrazovanja je pod velikim pritiskom usled oštrih zahteva tržišta rada. U ovom radu je izvršena analiza obrazovnog sistema u oblasti rudarstva i geologije u ...
    obrazovanje, rudarstvo, geologija
    ... to society, active participation from experts in the field is essential. Professionals, in addition to knowledge in mining and geology, often need to possess skills in organization and management as Wwell as decision-making abilities. The paper provides an overview of the current situation in secondary ...

  • Application of machine learning for diagnosing the operation of a deep well pump in oil production

    Maja Trikić (2024)
    This paper will thoroughly examine how machine learning can improve the diagnosis of deep well pumps by analyzing the role and function of the pumps, dynamograms, sensor technologies, and diagnostic methods.Our analysis will provide insights into modern techniques and approaches for enhancing the performance and reliability of oil production systems, targeting cost reduction and increased operational efficiency.
    deep well pump, dynamograms, machine learning, diagnostics of operating coditions,Random Forest, XGBoost
    ... resource management. In the analysis of dynamometric cards for hundreds or thousands of wells, visual classification is impractical and requires substantial expertise. Therefore, developing algorithms for automatic recognition of significant events is crucial for improving asset management. Machine ...
    ... dimensions of downhole pumps necessary for calculating baseline theoretical dynamograms. 10 All these complex databases are integrated into the knowledge base of the intelligent computing. system for diagnosing well behavior in deep well pumping, which will be analyzed in this paper. 3.2 Dynamograms ...
    ... how machine learning can be used to analyze complex patterns in sensor data and identify issues in pump operation or sensor faults. Proactive management of pump performance and prevention of downtime represents a key advantage of applying this technology. 2. ROLE AND FUNCTION OF DEEP WELL PUMPS ...

  • An Approach to Efficient Processing of Multi-Word Units

    Cvetana Krstev, Ivan Obradović, Ranka Stanković, Duško Vitas (2013)
    Efficient processing of Multi-Word Units in the course of development of morphological MWU dictionaries is not easy to achieve, especially when languages with complex morphological structures are concerned, such as Serbian. Manual development of this type of dictionaries is a tedious and extremely slow process. To alleviate this problem we turned to our multipurpose software tool, dubbed LeXimir, in the production of lemmas for e-dictionaries of multi-word units. In addition to that, we developed a procedure aimed at making ...
    Natural Language Processing, Grammatical Category, Lexical Representation, MWU, multi-word unit
    ... can be found in dictionaries of simple words. 6 Cvetana Krstev, Ivan Obradović, Ranka Stanković, and Duško Vitas 3 LeXimir as a Dictionary Management System Bearing in mind the aforementioned complexity of production of MWU lemmas we have endeavored towards a procedure for automatic production ...
    ... and ‘GramCat’ (grammatical codes of constituents) 8 Cvetana Krstev, Ivan Obradović, Ranka Stanković, and Duško Vitas Fig. 3 The DELAC entry management form of Leximir have to be filled. The system does this automatically by offering all possible so- lutions retrieved from DELAS/DELAF dictionaries ...
    ... uskrsenje sina božjeg ‘resurrection of the Son of God’ noun/noun in gen./adjective in gen. menadžment ljudskim resursima ‘human resources management’ noun/adjective in instr./noun in instr. raketa zemlja-vazduh ‘air-to-ground missile’ noun/noun in nom./noun in nom. ugovor o zakupu ‘lease contract’ ...

  • Towards Better Valorisation of Industrial Minerals andRocks in Serbia—Case Study of Industrial Clays

    Vladimir Simić, Dragana Životić, Zoran Miladinović (2021)
    Management, Monitoring, Policy and Law,Nature and Landscape Conservation
    ... low exploration level of certain sedimentary basins, especially insufficient knowledge on the metallogenetic factors influencing the occurrence of certain types of industrial miner- als and especially insufficient knowledge on the origin and occurrences of certain types of industrial clays. Better ...
    ... and raw material quality) defines an almost uniform testing methodology, leaving the responsible designers without the opportunity to apply their knowledge and experience on a particular deposit, type of raw material or even a certain quality (grade) of raw ma- terial. Resources 2021, 10, 63 ...
    ... determination of a genetic type of a mineral deposit based on procedures necessary to perform the best available exploration project resulting in good knowledge of the deposit morphology, quality/grade of mineral commodity, and optimal utilisation (Figure 1). The next step is adequate evaluation and estimation ...

  • Selection of Artificial Lift Methods: A Brief Review and New Model Based on Fuzzy Logic

    Miroslav Crnogorac, Miloš Tanasijević, Dušan Danilović, Vesna Karović Maričić, Branko Leković (2020)
    Artificial lift methods have applications in oil wells where oil production is no longer possible due to natural reservoir energy, so this necessary energy is added by introducing lift methods. In order to achieve optimum production, the selection of an artificial lift method is very important. This paper uses fuzzy logic as a mathematical and conceptual model for selection of the optimal artificial lift method. The outcome or IF-THEN rules, as the central part of the model, is based ...
    mehaničke metode, proizvodnja nafte, fazi logika, donošenje odluka, optimizacija
    ... This contains three modules: a module of expert knowledge, experience and theoretical knowledge; a simulation design module; and an economic evaluation module. The expert knowledge module consists of an expert knowledge base, i.e., the knowledge of nine world-recognized experts from certain fields ...
    ... fields of artificial lift methodology and the ways in which they choose the best artificial lift method, generally known theoretical (textbook) knowledge, and basic, Energies 2020, 13, 1758 3 of 15 commonly-used calculations. The design simulation module serves to design the methods selected in the ...
    ... these are programs that analyze all parameters, both technical and economic, and in the output give the best artificial lift method. They use expert knowledge; it is necessary for an expert to analyze the output of the program and decide which method is most appropriate [7,9]. The third group (III) of ...

  • Fuzzy expert analysis of the severity of mining machinery failure

    Dejan V. Petrović, Miloš Tanasijević, Saša Stojadinović, Jelena Ivaz, Pavle Stojković (2020)
    Mining machinery failure is almost an everyday occurrence. Usually the failures bare certain consequences, which require additional financial costs to repair and restore the system to its operational state. The consequences are viewed through negative and damaging effects a failure has on the machine, health and safety of the employees, work environment, and on the environment. The removal of the consequences of the failure requires additional financial investment, which has a negative impact on the company’s business. In order ...
    Severity of failure, Severity of failure assessment, Mining machinery, Fuzzy sets, Fuzzy logic

  • 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
    ... for Abusive Speech Detection in Serbian | Danka Jokić, Ranka Stanković, Cvetana Krstev, Branislava Šandrih | 3rd Conference on Language, Data and Knowledge (LDK 2021) | 2021 | | 10.4230/OASIcs.LDK.2021.13 http://dr.rgf.bg.ac.rs/s/repo/item/0005133 Дигитални репозиторијум Рударско-геолошког факултета ...
    ... Ranka Stanković, Cvetana Krstev, and Branislava Šandrih; licensed under Creative Commons License CC-BY 4.0 3rd Conference on Language, Data and Knowledge (LDK 2021). Editors: Dagmar Gromann, Gilles Sérasset, Thierry Declerck, John P. McCrae, Jorge Gracia, Julia Bosque-Gil, Fernando Bobillo, and Barbara ...
    ... deciding which approach should we take when building the corpus of abusive language, several future implications were considered: 1) To the best of our knowledge, AbCoSER (Abusive Corpus for serbian) is the first corpus tackling abusive language phenomenon in the Serbian language; 2) This corpus is to be used ...

  • Efficiency and lifetime of medium voltage transformers

    Snežana Aleksandrović, Vesna Damnjanović (2017)

  • Дигиталне библиотеке у рударству и геологији са посебним освртом на представљање сиве литературе

    Биљана Лазић, Александра Томашевић, Михаило Шкорић (2019)
    Имајући у виду потребу за проналажењем информација похрањених у различитим облицима документације која се генерише у областима рударства и геологије на Рударско-геолошком факултету Универзитета у Београду, отпочет је процес развоја дигиталне библиотеке ROmeka@RGF, на платформи за приказивање дигиталних колекција - Омека. Значајан део документације представља такозвана сива литература која је претежно заступљена у виду вишетомне документацијe. Први савладани изазов представљало је повезивање различитих вишетомних делова пројектних извештаја у једну целину која би била лако доступна и претражива.
    дигиталне библиотеке, сива литература, Омека, језички ресурси, речници
    ... Morocco. Nicoletta Calzolari et al. (ur.). Marrakech : European Language Resources Association (ELRA), 2008. . Okoroma, Francisca. „Grey Literature Management at Southern Illinois University Edwardsville (SIUE) Library, USA: A Macarthur Foundation Grant Research Project“. Library Philosophy and Practice ...

  • Оцена перспективности изворишта "Вић баре" за водоснабдевање Обреновца

    Бојан Хајдин, Душан Поломчић, Зоран Стевановић, Драгољуб Бајић, Катарина Хајдин (2012)
    ... DOKMANOVIC P., STEVANOVIC Z., HAJDIN K., (2007): State of art of Vié Bare Source for Obrenovac Water Supply, Regional IWA Conference on groundwater management in the Danube river basin and other large river basins, Beograd p.p. 217-225. SORO A., RADOVANOVIC M., (1997): Studija optimizacije rada i perspektive ...

  • Coupling of artificial intelligence methods in the development of hybrid intelligent systems

    Ranka Stanković, Ivan Obradović, Nikola Lilić (2001)
    In this paper we present an approach which couples various artificial intelligence (AI) methods in the solution of complex problems that cannot adequately be solved by a single AI method. We argue that the resulting, hybrid intelligent systems (HIS) can be successfully implemented with the use of available AI software libraries. Different coupling methods are analyzed and a classification of hybrid systems based on the chosen method is given. Two case studies of hybrid systems used in mining engineering ...
    hibridni inteligentni sistemi, spregnuti sistemi, metode veštačke inteligencije, rudarske primene veštačke inteligencije
    ... well known numerical optimization and various artificial intelligence methods. By introducing heuristics into the knowledge base existing mathematical models are upgraded with knowledge acquired through engineering practice. Planing of required air flow quantities INVENTS ResNet SimVent VENTEX ...
    ... developed as a knowledge-based (symbolic) upgrade of the SimVent numerical package and it thus belongs to the category of coupled numerical and symbolic systems. The numerical part consists of SimVent simulation routines and the symbolic part of the mine ventilation expert’s knowledge. VENTEX was ...
    ... improving air protection on the analyzed locality, is in progress. Existing legal regulations and engineering practice will be used for building its knowledge base. The reliability of results obtained by the proposed hybrid system was tested on a test set, and the resulting correlation coefficient ...

  • EUROLAN 2021: Introduction to Linked Data for Linguistics Online Training School

    Milan Dojchinovski, Julia Bosque Gil, Jorge Gracia, Ranka Stanković (2021)
    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
    ... Lexicon Model for Ontologies; Lexicon Model for Ontologies: Com- munity Report, 10 May 2016 8. SKOS Simple Knowledge Organization System - home page 9. Protégé 10. VocBench: A Collaborative Management System for OWL ontologies, SKOS(/XL) thesauri, OntoLex-lemon lexicons and generic RDF datasets 11. The ...
    ... and RDF dedicated sessions. The second day covered topics related to on- tologies, including modelling knowledge with ontologies, OWL and SKOS8 knowledge representation languages, reasoning of knowledge, and a hands- on session using the Protégé9 ontology editor. The third day was dedicated to the topics ...
    ... as well as for those already having basic knowledge in the fields covered. The school provided a comprehensive introduction to the methodologies for representing linguis- tic resources using semantic web technologies, together with the means to extract knowledge from language resources and exploit it using ...

  • 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

  • Prioritization of strategic measures for strengthening the security of supply of the Serbian natural gas sector

    Boban Pavlović, Dejan Ivezić, Marija Živković (2020)
    To strengthen the security of supply of the Serbian gas sector, it is necessary to analyze the impact of planned strategic measures. The analysis involves the identification of the most influential threats to the security of natural gas supply and prioritization of the strategic measures for overcoming the consequences of threats. The proposed methodology is based on Fuzzy Analytic Hierarchy Process. The obtained weights for the identified threats and strategic measures are formed according to experts' judgments. The results ...
    Sigurnost snabdevanja, Donošenje odluka, Snabdevanje prirodnim gasom, Fazi AHP, Energetski indikatori

  • A multi-criteria approach for assessing the potential of renewable energy sources for electricity generation: Case Serbia

    Boban Pavlović, Dejan Ivezić, Marija Živković (2021)
    When assessing the potential of renewable energy alternatives for electricity generation, it is necessary to implement a multi-perspective approach that includes economic, technical, environmental, and socio-political criteria. For the evaluation of criteria and alternatives, the Fuzzy Analytical Hierarchy Process (FAHP) method is applied. The obtained weights are formed according to the values of energy indicators and expert judgments. The use of a fuzzy numerical value scale for the assessment of expert judgments and energy indicators provides a more sensitive ...
    Proizvodnja električne energije, Obnovljivi izvori energije, Višekriterijumsko odlučivanje, Srbija
    ... Arabia. Sustain Energy Technol Assess 16, 137–150. Artmann, M., 2014. Assessment of soil sealing management responses, strategies, and targets toward ecologically sustainable urban land use management, AMBIO. J Hum Environ 43 (2014), 530–531. Bogdanov, D., Farfan, J., Sadovskaia, K., Aghahosseini, ...
    ... plants using biodegradable waste materials from agricul- tural production processes, forestry, and households, ma- nure from farms, products of forest management activi- ties, biodegradable residues from food processing and from the wood industry. Biogas power plants are power plants with one or more aggregators ...

  • Развој модела употребног квалитета помоћне механизације на површинским коповима лигнита

    Драгица Јагодић Крунић (2021)
    Тренутно стање помоћне механизације на површинским коповима лигнита је незадовољавајуће узроковано пре свега старошћу и неблаговременом заменом машима услед чега је расположивост недовољна а трошкови експлоатације и одржавања високи. Тренутно стање и захтеви који се постављају пред ове машине указују на неопходност оптимизације процеса управљања помоћном механизацијом. Одређивање оптималног времена замене и преосталих могућности је најодговорнији управљачки задатак који треба да буде заснован на свеобухватном сагледавању економских, техничких и других узрочно последичних веза. Са економског аспекта гледано треба одржавати ...
    помоћна механизација, употребни квалитет, ефективност, расположивост, сигурност функционисања, ризик, трошкови животног циклуса, фази логика, Монте Карло метода
    ... података – откривање знања (Data Mining – Knowledge Data Discovery); • Интелигентни агенти (Intelligent Software Agents); • Комуникације у природном језику (Language Technology) [106]:. Структуру експертских система чине следећи елементи: • База знања (knowledge base); • Механизам закључивања (inference ...
    ... Electrotechnical Commission, IEC 60300-3-11:1999, Dependability management - Part 3-11: Application guide - Reliability centred maintenance, 1999. [42] International Electrotechnical Commission, IEC 60300-3-11:2009, Dependability management - Part 3-11: Application guide - Reliability centred maintenance ...
    ... Prentice Hall Inc., New Jersey, 1981. [51] International Electrotechnical Commission, IEC 60300-1:1993, Dependability management - Part 1: Dependability programme management, 1993. [52] Институт за стандардизацију Србије, SRPS IEC 300-1/ISO 9000-4:1995, Управљање сигурношћу функционисања – Део ...