Претрага
255 items
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Regional rockfall exposure assessment, experience from Serbia
Rockfalls are common in hilly and mountainous areas, especially along roads with engineered slopes and cuts. Such is the case for most of the state and local road routes in Central, Serbia, which was the subject in this case study. A road network of 276 km covering roughly 1700 km2 between the cities of Kraljevo, Čačak and Ivanjica is presented. Assessing of such wide areas needs to be conducted from large to site-specific scale, i.e., using GIS spatial tools ...Miloš Marjanović, Biljana Abolmasov, Uroš Đurić, Jelka Krušić, Snežana Bogdanović. "Regional rockfall exposure assessment, experience from Serbia" in 5th Regional symposium on landslides in Adriatic–Balkan Region, 23-26 March 2022, Faculty of Civil Engineering, University of Rijeka and Faculty of Mining, Geology and Petroleum Engineering, University of Zagreb (2022)
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Keyword Extraction from Parallel Abstracts of Scientific Publications
... or lemmatization) as it is derived purely from the statistical and structural information of the network [10]. In this study, we use the SBKE method on a directed and weighted network. An individual network is constructed separately for each Serbian and for each English text. More preciously, from all ...
... the basic characteristics of the method to ensure the readability and completeness of the manuscript. 2.1 The SBKE Method The network or graph-based approach, where a network (or graph) of words is used for the representation of texts, enables the exploration of the relationships and structural information ...
... corresponding word pairs within a corpus. We will focus on the network construction around co-occurrence relations of adjacent words within sentences, since it requires no semantic or syn- tactic preprocessing of the input text. Network enabled keyword extraction meth- ods exploit various structural ...Slobodan Beliga, Olivera Kitanović, Ranka Stanković, Sanda Martinčić-Ipšić . "Keyword Extraction from Parallel Abstracts of Scientific Publications" in Sematic Keyword-Based Search on Structured Data Sources - Third International KEYSTONE Conference, IKC 2017 Gdańsk, Poland, September 11–12, 2017 Revised Selected Papers and COST Action IC1302 Reports, Springer (2017)
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Optimisation of underground mine decline development system using genetic algorithm
... different decline sections. Access infrastructure designing can be treated as spanning the spatial network which will connect all main terminals (points). In our model we defined spatial network by adequate nonlinear constrained objective function representing the cost of mine development and ore ...
... from each orebody to the surface portal is fixed. A decline development system is modeled as a 3–dimensional or space network interconnecting all main points. Such network must incorporate the navigability constraints caused by the mine trucks and other equipment characteristics. The absolute ...
... case when the deposit is composed of few ore bodies. Underground mine development system is treated as spatial network connecting all main terminals with minimum cost. Such network is defined by adequate objective function. Optimisation model is based on the minimisation of the nonlinear constrained ...Zoran Gligorić, Aleksandar Ganić, Rade Tokalić, Aleksandar Milutinović. "Optimisation of underground mine decline development system using genetic algorithm" in Underground mining engineering, Beograd : Univerzitet u Beogradu – Rudarsko–geološki fakultet (2014)
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Projekcija razvoja osmatračke mreže podzemnih voda u Republici Srbiji
Petar Dokmanović, Zoran Stevanović, Saša Milanović, Bojan Hajdin, Vesna Ristić-Vakanjac, Veljko Marinović (2016)... (GW) monitoring network is made during 2015, for Republic Hydro- Meteorological Survey of Serbia (RHMS), with respect of the following requests: 1/Accordance with relevant national and EU legislations 2/Inclusion of: a)the existing RHMS network as well as a part of wells in regional monitoring networks ...
... new monitoring wells, in „uncovered“ GW bodies (GWB) 3/Defining of number and rough locations of monitoring points, conditioned by economical development, in phases. The following graphic and technical bases are used: 1/Official delineation of GWB in RS 2/Actual GW level monitoring network of RHMS ...
... maintenance of the network, a part of GWB is integrated in Groups of GWB (GGWB), so that total number of (G)GWB is 91, 58 of which are (single) GWB. Basic criteria for the projection of monitoring network were assessed pressures on quantity/chemicall status of (G)GWB. In total, 361 monitoring point is ...Petar Dokmanović, Zoran Stevanović, Saša Milanović, Bojan Hajdin, Vesna Ristić-Vakanjac, Veljko Marinović. "Projekcija razvoja osmatračke mreže podzemnih voda u Republici Srbiji" in Vodoprivreda 48 no. 279-281, Beograd : Srpsko društvo za odvodnjavanje i navodnjavanje (2016)
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The state and perspective of the natural gas sector in Serbia
The strategy of long-term energy development of Serbia identifies an increase of share of natural gas in final energy consumption as one of the main aims. Serbia has signed a strategic agreement with the Russian Federation on cooperation in the oil and gas sector, within which the project South Stream pipeline is planned to be realized. In addition, the Republic of Serbia has signed the Treaty that establishes the Energy Community and accepted the obligation to implement the Energy ...Dejan Ivezić, Marija Živković, Dušan Danilović, Aleksandar Madžarević, Miloš Tanasijević. "The state and perspective of the natural gas sector in Serbia" in Energy Sources, Part B: Economics, Planning and Policy, Taylor & Francis Group, LLC (2016). https://doi.org/http://dx.doi.org/10.1080/15567249.2013.858796
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Adaptive neuro-fuzzy prediction of operation of the bucket wheel drive based on wear of cutting elements
The capacity of the rotor excavator depends largely on the operation of the subsystem for digging. There is a great contribution to the correct and sharp teeth when the capacity is the highest. In the function of time, the teeth become clogged due to abrasive wear, or changes in their geometric shape. To analyze the bucket wheel drive in depend on wear of the cutting elements in this study adaptive neuro fuzzy inference system (ANFIS) approach was implemented. ANFIS ...Filip Miletić, Predrag D. Jovančić, Milos Milovančević, Dragan Ignjatović. "Adaptive neuro-fuzzy prediction of operation of the bucket wheel drive based on wear of cutting elements" in Advances in Engineering Software, Elsevier BV (2020). https://doi.org/10.1016/j.advengsoft.2020.102824
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Application of Project Management Process on Environmental Management System Improvement in Mining-Energy Complexes
... implemented through the network of automatic stations for monitoring air quality, in accordance with the Decree on establishing the Air Quality Control Program in the state network and in local networks of area monitoring. Automatic monitoring was conducted for measuring the concentration of sulfur dioxide ...
... Protection Agency). Automatic monitoring of air quality in the Republic of Serbia, under the CARDS Project “Supply of equipment for air quality monitoring stations, Serbia” (EuropeAid/124394/D/SUP/YU), is organized by the Environmental Protection Agency. Operational monitoring of air quality was implemented ...
... particles and gases during spontaneous combustion of coal 2 3 1 + 1 + 0 + 0 + 1 + 1 24 Energies 2016, 9, 1071 10 of 20 Network Planning Technique—Critical Path Method (CPM) A network planning technique is a good starting point for project management, definition of activities, and representation of the ...Jelena Malenović Nikolić, Dejan Vasović , Ivana Filipović , Stevan Mušicki, Ivica Ristović . "Application of Project Management Process on Environmental Management System Improvement in Mining-Energy Complexes" in Energies (2016). https://doi.org/https://doi.org/10.3390/en9121071
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Prilog poznavanju režima voda reke Visočice
Vesna Ristić Vakanjac, Jovan Nikolić, Marina Čokorilo Ilić, Dušan Polomčić, Dragoljub Bajić, Bojan Hajdin, Jelena Ratković (2018)Специфични геолошки и хидрогеолошки услови у области слива реке Височице, а пре свега широко распрострањење карбонатног средње тријаског комплекса стена, као и доњо тријаске шарене серије (алевролити, пешчари, конгломерати) имали су за последицу формирање специфичног типа дренажне мреже као и специфичног режима отицаја реке Височице и њених значајнијих притока. У конкретном случају, у горњим деловима слива ове реке као и њених главних притока, у оквиру доњо тријаских седимената развијен је дендритичан тип хидрографске мреже, док преласком на средње тријаске ...Vesna Ristić Vakanjac, Jovan Nikolić, Marina Čokorilo Ilić, Dušan Polomčić, Dragoljub Bajić, Bojan Hajdin, Jelena Ratković . "Prilog poznavanju režima voda reke Visočice" in 17. Kongres geologa Srbije, Vrnjačka Banja, 17-20.05.2018., Beograd : Srpsko geološko društvo (2018)
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Assessments of effects of implementation of strategic plans for development of Belgrade District heating system
The district heating system (DHS) is one of the key elements of the Belgrade energy system. Overview of the current state and basic characteristics of the DHS are presented in this paper. The focus is on the planned development of DHS and on the analyses of effects of realization of measures and projects defined by strategic documents related to DHS which are adopted by city authorities (Development Strategy of DHS and Strategy of Belgrade Development). Two exploratory scenarios were ...Dejan Ivezić, Marija Živković, Aleksandar Madžarević, Miodrag Grujić. "Assessments of effects of implementation of strategic plans for development of Belgrade District heating system" in Sustainable Cities and Society, Elsevier BV (2020). https://doi.org/10.1016/j.scs.2020.102304
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Using technology for knowledge transfer between academia and enterprises
Ivan Obradović, Ranka Stanković (2014)... The TEL platform will also serve as a model for developing similar platforms as nodes within a TEL network encompassing a larger number of universities and enterprises. The network will feature a common portal for indexing and facilitating access to the various OER within the nodes. Section ...
... approach envisages the development of an infrastructure for implementation of a TEL network, involving a larger number of universities and enterprises within the WB, and thus giving broader access to OER. The network will consist of nodes at universities and enterprises, featuring their own TEL platforms ...
... entrepreneurial, within a single web-based framework. The main goal of our project is to establish an open educational resources (OER) platform and network for fostering technology enhanced learning (TEL) within HE institutions and enterprises in the Western Balkans. Another objective is to provide ...Ivan Obradović, Ranka Stanković. "Using technology for knowledge transfer between academia and enterprises" in Knowledge and Management Models for Sustainable Growth, Proc. of IFKAD 2014, 9th International Forum on Knowledge Asset Dynamics, 11-13 June 2013, Matera, Italy, Bari : IFKAD (2014)
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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 ...... Another important lexical resource is the Serbian WordNet. A WordNet network is composed of synsets, or sets of synonymous words representing a concept, with basic semantic relations between them forming a semantic network. Each synset word is denoted by a “literal string” followed by a “sense ...
... ac.rs Abstract: 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 ...
... etc.), annotation of selected resources and OER repository on local edX platform. In order to successfully cope with multilingualism within the network, especially where terminology is concerned, a language support system is developed within the BAEKTEL metadata portal. In this paper we will describe ...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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Part of Speech Tagging for Serbian language using Natural Language Toolkit
Ranka Stanković, Boro Milovanović (2020)Dok se razvijaju složeni algoritmi za NLP (obrada prirodnog jezika), osnovni zadaci kao što je označavanje ostaju veoma važni i još uvek izazovni. NLTK (Natural Language Toolkit) je moćna Python biblioteka za razvoj programa zasnovanih na NLP-u. Pokušavamo da iskoristimo ovu biblioteku za kreiranje PoS (vrsta reči) oznake za savremeni srpski jezik. Jedanaest različitih modela je kreirano korišćenjem NLTK API-ja za označavanje. Najbolji modeli se transformišu sa Brill tagerom da bi se poboljšala tačnost. Obučili smo modele na označenom ...... is achieved with the Perceptron tagger, a neural network which is more than a decade old. Since then, a breakthrough with deep learning has happened, so there’s a strong belief that further improvements can be made with the latest neural network models [24]. However, there is a doubt if these models ...
... the Perceptron tagger: 92,52 – 95,76% accuracy for the different tagsets. Index Terms—Natural Language Processing; Machine Learning; Neural Network. I. INTRODUCTION In the last couple of years, a big advancement in the field of Natural Language Processing has occurred. There are state-of- ...
... tagger is based on Conditional Random Fields [18]. HMM tagger is based on Hidden Markov Models [19]. Training on an averaged, one- layer neural network produces Perceptron tagger [20]. TnT tagger is short of Trigrams'n'Tags and it uses a second order Markov model to produce tags for an input sequence ...Ranka Stanković, Boro Milovanović. "Part of Speech Tagging for Serbian language using Natural Language Toolkit" in 7th International Conference on Electrical, Electronic and Computing Engineering IcETRAN 2020, Academic Mind, Belgrade (2020)
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Moниторинг у животној средини - одабрана поглавља
Динко Кнежевић, Драгана Нишић, Александар Цвјетић, Драгана Ранђеловић, Зоран Секулић. Moниторинг у животној средини - одабрана поглавља, Београд : Универзитет у Београду, Рударско-геолошки факултет, 2015
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Formative evaluation of e-learning projects with the logical framework approach
... framework envisages a network of nodes offering OER content and a central repository, the BAEKTEL Metadata Portal (BMP), where metadata, providing all important information on the network resources will be stored, thus enabling their centralized search and browse. The initial network consists of six ...
... initiated with the main goal of building an Open Educational Resource (OER) network offering educational materials by higher education (HE) institutions and best practice examples by enterprise experts. The network is conceived as multilingual, which means that resources can be published in ...
... Foundation, Evaluation Handbook, available at: www.wkkf.org (accessed november 2013), 1998. [12] Shapiro J., Monitoring and Evaluation, available at: http://www.civicus.org/new/media/Monitoring%20an d%20Evaluation.pdf (accessed 24 april 2014)., 1996. [13] Office of Government Commerce, Managing ...Roberto Linzalone, Giovani Schiuma, Ivan Obradović, Ranka Stanković. "Formative evaluation of e-learning projects with the logical framework approach" in The Sixth International Conference on e-Learning (eLearning-2015), September 2015, Belgrade, Serbia, Belgrade Metropolitan Univesity (2015)
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The importance of preserving the collection of rocks and minerals at the Faculty of mining and geology
Alena Zdravković, Vesna Matović (2017)Alena Zdravković, Vesna Matović. "The importance of preserving the collection of rocks and minerals at the Faculty of mining and geology" in XVIII Universeum network meeting, Mobility of University Heritage, Book of Abstracts, University of Belgrade: (2017): 63-63
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Стање квалитета амбијенталног ваздуха на подручју града Панчева
Александар Маринковић (2024)Квалитет ваздуха је кључни фактор за здравље људи и очување животне средине. У овом завршном раду анализирано је стање амбијенталног ваздуха на територији града Панчева како би се сагледали извори загађења, ПЛН мониторинга и изазови у погледу квалитета ваздуха са којима се суочавају сви становници. Кроз примену савремених метода праћења, идентификовани су главни извори загађења и анализирана је дистрибуција загађујућих материја у урбаном окружењу.Праћењем концентрације загађивача као што су честице PM10, PM2.5, сумпор-диоксид (SO2), азот-диоксид (NO2) и други, ...... assess pollution sources, monitoring plans, and air quality challenges faced by all residents. By applying modern monitoring methods, the main pollution sources have been identified and the distribution of pollutants in the urban environment has been analyzed. Monitoring the concentration of pollutants ...
... taken towards improving, primarily the current air monitoring plan, and then the air quality, with the alm of protecting the health of Pančevo”s citizens, thereby contributing to creating a safer and healthier environment for all. Keywords: monitoring, pollutants, health, Pancevo, air quality. Canp:aj: ...Александар Маринковић. Стање квалитета амбијенталног ваздуха на подручју града Панчева, 2024
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Стање квалитета амбијенталног ваздуха на подручју града Београда
Марко Колачарић (2024)У овом раду анализирано је стање квалитета амбијенталног ваздуха на територији града Београда. Анализа се заснива на праћењу података о загађујућим материјама прикупљеним у 2022. години са шест мерних места на територији града. Загађивачи који су обухваћени овом радом су сумпор-диоксид (SO2), азот-диоксид (NO2), честични загађивачи (PM2.5 и PM10), тропосферски озон (О3) и угљен-моноксид (СО). На основу добијених резултата предложене су мере за побољшање тренутног система. Констатовано је прекорачење законских граница на свим мерним местима, за једну или више ...... quality in the area of Belgrade city Abstract: This paper analyzes the air quality status in the city of Belgrade. The analysis is based on monitoring data of pollutants collected in 2022. from six measurement sites within the city. The pollutants covered in this study are sulfur dioxide (SO) ...
... the current system are proposed. It was found that legal limits were exceeded at all measurement sites, for one or more pollutants. Keywords: monitoring, analysis, pollutants, air quality, Belgrade CriHcak cJiBHKa: Cmaka 1 Teorpadicku nonoxaj rpana Beorpana Cmaka 2 Knace craOuzaocTu arMocO(epe ...
... o0anBe3a H3 Mel)yHapojnHHx yroBopa [1]. IlIocme/gbHx TOJHHa CC KOJL MOHHTODpHHTa IHOJaBJbyje H HOJaM "VCAIJIAHIEHH MOHMHTOPHHI" (enrm. Compliance Monitoring). OH He pejcTaBJba HeCKy TIOCCOHy BPpCTy MHJMH THH MOHHTOpHHra, aH e(uMHHMMHe HauHMH Kopumihema H ripHKa3HBaMba noOOHJjeHMX peyynrara. HaHMe ...Марко Колачарић . Стање квалитета амбијенталног ваздуха на подручју града Београда, 2024
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Ventex: an expert system for mine ventilation systems analysis
roblems relating to mine ventilation systems analysis are usually of a very complex nature. They involve the estimation of numerous interdependent parameters pertaining to the network status, ventilation status, ventilation system stability, air current losses, climate conditions, gas state, fire risk and dangerous dust pollution risk. The solution to these problems relies, to a great extent, on numerical methods. With the development of computer technology these methods were incorporated as numerical routes in software packages, such as the mine ...Nikola Lilić, Ranka Stanković, Ivan Obradović. "Ventex: an expert system for mine ventilation systems analysis" in Mining Technology, United Kingdom (1997)
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The importance of preserving The Mineral and rock Collection at the Faculty of Mining and Geology
Zdravković Alena, Matović Vesna (2017)Zdravković Alena, Matović Vesna. "The importance of preserving The Mineral and rock Collection at the Faculty of Mining and Geology" in Mobility of University Heritage : book of abstracts / XVIII Universeum Network Meeting, Belgrade, 8-10 June 2017 no. 18, Beograd:Univerzitet u Beogradu i Universeum-Evropska mreža akademskog nasleđa (2017): 63
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Archaeometric study of early medieval pottery Caričin grad, Serbia
Damjanović Ljiljana, Holclajtner-Antunović Ivanka, Bajuk-Bogdanović Danica, Šarić Kristina, Erić Suzana (2012)Damjanović Ljiljana, Holclajtner-Antunović Ivanka, Bajuk-Bogdanović Danica, Šarić Kristina, Erić Suzana. "Archaeometric study of early medieval pottery Caričin grad, Serbia" in 3rd Symposium of the Balkan Archaeometry Network, Bucharest, Romania, 29-30th October, 2012, Book of Abstracts, Bucharest: (2012): 26-26