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Упит dcterms_subject_txt:multiple-criteria decision making

291 items

  • Analiza seizmičkog dejstva eksplozije pri miniranju na primeru izrade tunela Golubac kod Golupca

    Suzana Lutovac, Miloš Gligorić, Jelena Majstorović, Luka Crnogorac (2022)
    Savremeno rudarstvo, a pogotovo masovna eksploatacija metaličnih ležišta, ne bi se mogla zamisliti bez primene eksploziva. Rudarstvo je privredna grana, gde su eksplozivi našli najširu primenu za eksploataciju čvrstih mineralnih sirovina. Primena energije eksploziva dovodi do poboljšanja tehničkoekonomskih pokazatelja pri eksploataciji mineralnih sirovina, ali i do pojave negativnih efekata koji prate radove na miniranju. Eksplozivni materijali u rudarstvu, geologiji i drugim delatnostima, svojim dejstvom narušavaju prirodnu sredinu u vidu drobljenja, razbacivanja komada stene, vazdušnih udara, pojave sezmičkih efekata, pojave ...
    miniranje, seizmičko dejstvo, brzina oscilovanja stenske mase, kriterijumi ocene seizmičkog dejstva

  • Cutting Resistance Laboratory Testing Methodology for Underwater Coal Mining

    Vladimir Čebašek, Veljko Rupar, Stevan Đenadić, Filip Miletić (2021)
    Geology,Geotechnical Engineering and Engineering Geology
    ... operation for over 20 years. Based on analyzing the bucket-wheel dredger performance, productivity, maintenance costs, and reliability, a rational decision was made: to rehabilitate the most essential parts of the dredge, including the bucket wheel and the gearbox. However, the selection and construction ...
    ... operation for over 20 years. Based on analyzing the bucket-wheel dredger performance, productivity, maintenance costs, and reliability, a rational decision was made: to rehabilitate the most essential parts of the dredge, including the bucket wheel and the gearbox. However, the selection and construction ...

  • Preparation of Multimedia Document “YU Rock Scene”

    Milena Obradović, Aleksandra Arsenijević, Mihailo Škorić (2017)
    SUMMARY: This study will present the preparation process of a multimedia document entitled YU ROCK SCENE in which participants were senior students of undergraduate studies of the Department of Library and Information Science at the University of Belgrade Faculty of Philology during the academic year 2014/2015, as a part of the subject Multimedia Documents. This study gives an overview of the historical development of rock and roll in the territory of the former Yugoslavia, rock scene in Yugoslav republics, ...
    multimedia document, library science, information science, rock and roll, music, Yugoslavia
    ... of jeans caused a genuine revolution in the fashion world. Rock and roll too was not lagging behind these trends. The musicians of the time started making cover versions of world famous music hits, especially those of Elvis Presley, Chuck Berry, Buddy Holly and many other authors. It is difficult to ...
    ... grupe table Figure 1. Example of a region page – Slovenia First the basic composition was made with hierarchy architecture in its core. Instead of making HTML pages for each and every region, city or band, four PHP- scripts that consult the SQL-database were made and depending on the user’s choice d ...

  • Building learning capacity by blending different sources of knowledge

    Ivan Obradović, Ranka Stanković, Olivera Kitanović, Dalibor Vorkapić (2016)
    ... knowledge upon which innovative and effective approaches to today’s social problems can be built”1. In this paper we describe an approach to making available both entrepreneurial knowledge to university students on a wider basis and 1 http://www ...
    ... Although LOM is the leading and most widely used educational metadata specification, its main disadvantage is that it features too many elements, making it extremely tedious to implement. As a consequence, the majority of implementations use in practice only a few elements from the LOM schema. Thus ...

  • Business Models for Small-scale Biomass Projects Development

    Dejan Ivezić, Miodrag Gluščević, Marija Živković (2019)
    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 ...
    ... term. ESCO companies can launch the initiative by its own and contact the municipality or local community to promote the project and convince local decision makers that this is the best way of project implementation. After the expiry of the contract, it can be renewed, or the entire facility is transferred ...

  • 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

  • Advantages and challenges in presenting mathematical content using EDX platform

    Marija Radojičić, Ivan Obradović, Ranka Stanković, Olivera Kitanović, Roberto Linzalone (2016)
    ... usually given in the multiple choice form (Image 2). There students can check their solution and then see the detailed, step by step solution process, if needed (Image 3). v1:UB+UB8+2016/courseware/28a75ec7a9a44eedae3231b804e 229f4/ Image 2: Multiple choice task at course ...
    ... network- based, with non-linear structure, and xMOOCs, where courses are hyper-centralised, content-based, linear, and followed by automated, multiple-choice testing of learners’ understanding of the content [2, 3]. xMOOCs have become more popular after expansion of platforms such as edX, Coursera ...
    ... knowledge of html. Task component offers a few on board frameworks for different types of tasks. For example, there are possibilities to create multiple choice task, task with text or numerical input, checkbox task or tasks with hints and feedbacks. The platform offers additional advanced options ...

  • The Importance of Geotechnical Investigations for the Construction of Transfer Station „Prelići“ on Landfill in Cacak – Serbia

    Dragoslav Rakić, Irena Basarić, Jovana Janković, Tina Đurić (2019)
    For the purpose of the facilities construction within the transfer station „Prelici“ in Cacak, specific geotechnical investigations were carried out based on which the technological project with the facilities schedule was developed. Significant deviations in relation to the presented results were determined during earthworks, so the additional geotechnical investigation works were carried out. Since the new investigation works have determined a different cross section of the terrain, it was proposed to move the planned facilities which led to the ...
    landfill, geotechnical investigations, transfer station
    ... rights reserved / www.cisapublisher.com 5. CONCLUSIONS The advantages of the presented technical solution for the treatment of municipal waste are multiple. From the point of view of achieving national goals, the level of recycling increases and obtains the necessary raw material for the work of the ...
    ... stations, as it was performed at the city landfill in Cacak. Certainly, many specificities are noted in practice, which reduce the desired effects, making it difficult and sometimes impossible to implement the imaginary strategy and technical solutions. The most common barriers that arise in everyday ...

  • Numerical modeling of Selanac debris flow propagation using SPH code

    Jelka Krušić, Biljana Abolmasov, Miloš Marjanović, Manuel Pastor, Saeid M. Tayyebi (2021)
    The Selanac debris flow is a very huge event triggered after extreme rainfall caused by Cyclone Tamara activity in the Republic of Serbia in May 2014. The Selanac case study was already modelling in different programs using Voellmy rheology assumptions like RAMMS software. In this paper research are focusing particularly on the process of debris flowing from initiation zone to main deposition area using Geoflow SPH two-phase model considering frictional rheology law. Main rheological parameters are back-calculated using also ...
    debris flow, modelling, SPH code, DEM
    ... debris flow is longer than the measured run-out distance obtained by the simulation model. Selanačka river transported material about 1 km longer, making instabilities down the river valley, which is likely due to the fact that it already had significant momentum upstream to begin with (torrential ...

  • Self-Engineering: Possibilities for Maintenance Operations in the Mining Machines Industry

    Steven Manders, Milorad Pantelić, Vladimir Milisavljević, Alberto Martinetti (2021)
    Self-engineering is a relatively new branch of knowledge that aims to understand how systems could “autonomously” re-configure or repair themselves without the intervention of the operators. A direct field of application is within the maintenance spectrum. Having systems or machines capable of self-detecting or even self-repairing could represent a game-changer, in capital asset fields such as the mining industry in particular. This paper aims to investigate the possible benefits and challenges of self-engineering / self-maintenance concerning mining machines, specifically bucket-wheel ...
    self-engineering, self-maintenance, maintenance operations, mining industry, bucket-wheel excavator, gearbox revitalization

  • Synergy between the mineral deposit exploration and geothermal resources assessment on the example of "Valjevo" boron and lithium deposit in Serbia

    Nebojša Atanacković, Vladimir Živanović, Ana Vranješ, Sava Magazinović, Marinko Toljić, Ana Arifović, Branislav Potić (2023)
    Exploration of mineral deposits involves a collection of vast data sets on geological characteristics of the area. These data can largely contribute to the assessment of the geothermal potential, which can lead to an increase in the share of geothermal resources in the energy mix of the extractive industry and the local community. On the example of the "Valjevo" B-Li deposit, data on structural settings and previous hydrogeological investigations were combined with the results of resource drilling and geophysical ...
    Geothermal assessment, Mineral deposit exploration, Geothermal potential, Serbia
    ... Geothermal assessment, Mineral deposit exploration, Geothermal potential, Serbia 1. INTRODUCTION The research community and the mining industry are making efforts to improve the environmental performance of mining operations by shifting to renewable energy. Previous studies showed that mineral exploration ...

  • Развој хибридног модела за оптиматизацију завршне контуре одлагалишта у површинској експлоатацији лежишта минералних сировина

    Aлександар Додеровић (2024)
    Површинска експлоатација минералних сировина захтијева претходно откопавање значајних( милионских) количина јаловине, које је неопходно транспортовати до локације на којој ће сеона трајно одложити. Традиционални приступ избора локације и дизајна одлагалишта се карактерише парцијалним приступом, заснованом на анализи неколико водећих критеријума као и на личном искуству инжењера, често занемарујући синергетски ефекат осталих утицајних фактора Технолошке операције које се односе на манипулацију јаловином, међу којима предњачи транспорт, генеришу највећи дио трошкова у површинској експлоатацији. Такође, цјелокупан процес експлоатације додатно је ограничен ...
    оптимизације завршне контуре одлагалишта, хибридни модел, површинска експлоатација, генетски алгоритам

  • Towards Automatic Definition Extraction for Serbian

    Ranka Stanković, Cvetana Krstev, Rada Stijović, Mirjana Gočanin, Mihailo Škorić (2021)
    U radu su prikazani preliminarni rezultati automatske ekstrakcije kandidata za definicije rečnika iz nestrukturiranih tekstova na srpskom jeziku u cilju ubrzanja razvoja rečnika. Definicije u rečniku Srpske akademije nauka i umetnosti (SANU) korišćene su za modelovanje različitih tipova definicija (opisnih, gramatičkih, referentnih i sinonimskih) koje imaju različite sintaksičke i leksičke karakteristike. Korpus istraživanja sastoji se od 61.213 definicija imenica, koje su analizirane korišćenjem morfoloških e-rečnika i lokalnih gramatika implementiranih kao pretvarači konačnih stanja u paketu za obradu korpusa otvorenog ...
    ... approach relying on the statistical machine learning models with syntax and semantic features; 3) the deep learning approach, using word embeddings via multiple layers of neural networks (Veyseh et al., 2020). Barnbrook (2002) claimed that definition is a basic activity of language, of particular importance ...
    ... који штетно делује на организам,... (An alcoholic is a person who exhibits alcohol addiction, which has a harmful effect on the body, ...) 3. multiple in SASA SASA витло N назив за разне направе које се окрећу; (winch N name for various rotating devices;) витло N обртна направа у виду елисе ...
    ... textbooks Витло је уређај који углавном служи за подизање или вучу терета. A winch is a device that is mainly used for lifting or towing loads. 4. multiple definitio ns textbooks птице су далеко најбројнија група копнених кичмењака,... (birds are by far the most numerous group of terrestrial vertebrates ...

  • 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
    ... there isn’t a significant information loss 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 ...
    ... areas. This type of software is predominantly used for text classification. Systems based on sentiment analysis assign sentiment values to text using multiple parameters, where a greater number of parameters means much greater complexity. Infotheca Vol. 17, No. 1, 2017 67 Škorić M., “Classification ...
    ... files contain 3,884 conversations of 2,019 different users and 1,843,826 messages that those users exchanged. The content of these messages is used in making the database for this research. With this, the first two aforementioned prerequisites were fulfilled. 2.2 Assigning values to the determiners The ...

  • Improving Document Retrieval in Large Domain Specific Textual Databases Using Lexical Resources

    Ranka Stanković, Cvetana Krstev, Ivan Obradović, Olivera Kitanović (2017)
    Large collections of textual documents represent an example of big data that requires the solution of three basic problems: the representation of documents, the representation of information needs and the matching of the two representations. This paper outlines the introduction of document indexing as a possible solution to document representation. Documents within a large textual database developed for geological projects in the Republic of Serbia for many years were indexed using methods developed within digital humanities: bag-of-words and named ...
    ... geology, exploration of mineral deposits, hydrogeology and engineering geology, as a modern and efficient information basis for planning, design and decision- making in the geological domain. A u t h o r P r o o f 4 R. Stanković et al. Within the GeolISS project a web portal1 was developed with the ...
    ... keyword matches in all metadata fields in the summary report is available, but the user can also perform a faceted search using additional criteria. These criteria restrict 1 http://geoliss.mre.gov.rs; search of fund documentation http://geoliss.mre.gov.rs/ index.php?page=fodib. 2 Actually, almost 9 ...

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

    Marija Živković (2019)
    Energy production and combustion, mostly from unregulated or inefficient fuel combustion, are the single most important anthropogenic sources of air pollutant emissions. Energy sector in Serbia is highly fossil fuel intensive: 87.88% of energy consumed in Serbia is related to fossil fuels, while almost 95% of energy sources are combusted. In 2017. energy related carbon dioxide emission in Serbia is was 47.95 million tones. The main source of carbon dioxide emission was coal, responsible for almost 70% of energy ...
    energy related emissions, Serbia
    ... directly or after they are transformed into other pollutants in the atmosphere. Around 6.5 million deaths are attributed each year to poor air quality, making this the world’s fourth-largest threat to human health, behind high blood pressure, dietary risks and smoking 4. Poverty and fossil fuel-intensive ...

  • Процена ризика од загађивања водних ресурса под утицајем напуштених рударских радова на простору Србије

    Nebojša B. Atanacković (2018-08-31)
    Велики број напуштених рударских радова и ограничена средства за рекултивацијуи ремедијацију деградираних простора подстакле су развој метода за издвајањеприоритетних локација на које је потребно усмерити даља истраживања. У датомконтексту, у склопу израде дисертације спроведене су научно-истраживачкеактивности које су за предмет имале анализу утицаја значајнијих напуштенихрударских радова на водне ресурсе на простору Србије јужно од Саве и Дунава.Разматрање предметне проблематике извршено је кроз развој и примену семи-квантитативне методологије за анализу ризика од загађивања површинских иподземних вода на регионалној размери. Примењена ...
    анализа ризика, водни ресурси, водна тела, рудничке воде, рударскиотпад, аналитички хијерархијски процеси, кластер анализа, математичка теоријаатрибута, функције припадности, семи-квантитативне методе
    ... проистеклих од великог броја критеријума (економски, социјални, еколошки…) и алтернатива, вишекритеријумска анализа доношења одлуке (енгл. multi-criteria decision analysis, MCDA) је нашла широку примену у области управљања ризиком. У области заштите животне средине, методе у оквиру MCDA које се примењују ...
    ... A.W. (1995) Water quality data—analysis and interpretation. CRC Press LLC, Boca Raton. 69. Huang B.I., Keisler J., Linkov I. (2011) Multi-criteria decision analysis in environmental sciences: Ten years of applications and trends. Science of The Total Environment 409(19): 3578-3594. doi 10.1016/j ...
    ... 2009.05.004 97. Linkov I., Satterstrom K.F.,Kiker G., Batchelor C., Bridges T., Ferguson E. (2006) From comparative risk assessment to multi-criteria decision analysis and adaptive management: Recent developments and applications. Environment International 32: 1072–1093. doi 10.1016/j.envint.2006.06 ...

  • An Approach to Development of Bilingual Lexical Resources

    Stanković Ranka, Obradović Ivan, Trtovac Aleksandra (2012)
    ... [Pammzi et al., 2006]. The tool extracts keyword collocations from documents and generates multiword keywords. The paper also outlines linguistic criteria used for building language resources for French, Italian, and German, and the use of multi-term descriptors as a means to better identify the ...
    ... the future, further automatization of this process will be considered, as well as the possibility of adding more languages to Biblimir, thus making it a multilingual lexical resource. As a member of META-NET, the Serbian HLT Group plans to make this resource, among others, available to the ...

  • Дефинисање археолошких објеката на локалитету Кремените њиве применом Ојлерове 3Д деконволуције на магнетометријске податке

    Весна Цветков, Илија Васиљевић, Бранислав Сретеновић, Весна Дамњановић (2018)
    ... he depth  at which the source of magnetic anomalies is located. The depth estimation is based on the analysis of  an isolated magnetic anomaly or multiple magnetic anomalies. For the estimation of the depth based on  an isolated magnetic anomaly, most commonly graphic procedures are used: the half‐w ...
    ... es were not  well defined. A slightly better result for the Located O3DD was obtained when data was first reduced to  the pole.  For models with multiple bodies of  varying depths,  it  is  shown  that  better  results with both  methods are obtained after reduction to the pole. This ensures that t ...
    ...  1990. Magnetic interpretation in tree dimen‐ sion using Euler deconvolution. Geophysics, 50 (1), 80–91.  Tomphson, D., 1982. A new  technique  for making  computer‐assisted depht estimates  from magnetic  data. Geophysics, 47(1), 31–37.  Vasiljević, I., 2013. Definisanje arheoloških objekata na lok ...

  • Flyrock induced by blasting in surface mining

    Milanka Negovanović, Lazar Kričak, Snežana Ignjatović, Stefan Milanović, Jovan Marković, Nikola Simić, Rade Šarac (2022)
    Miniranje predstavlja i dalje najefikasniji i najjeftiniji način eksploatacije velikih količina čvrstih mineralnih sirovina na površinskim kopovima. Energija eksplozije se koristi za fragmentaciju čvrste stenske mase do zahtevane granulacije. Pored pozitivnih efekata miniranja, postoje i određeni neželjeni efekti svakog procesa miniranja koji se mogu javiti, a to su: potresi tla, razletanje komada stene, vazdušni udari, otrovni i zagušljivi gasovi i prašina. Razletanje komada stene je nekontrolisano izbacivanje fragmenata odminirane stenske mase i predstavlja jedan od glavnih izvora materijalne štete ...
    razletanje, bušenje, miniranje, površinska eksploatacija, bezbednost, nesreća