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Упит dcterms_subject_txt:drainage system

703 items

  • A business intelligence approach to mine safety management

    Ljiljana Kolonja, Ranka Stanković, Ivan Obradović, Olivera Kitanović, Dejan Stevanović, Marija Radojičić (2016)
    ... applications and knowledge assets, supported by knowledge management analytical services implemented in a business intelligence system. This paper describes such a system for mine safety and its application for accident analysis in mines, developed to improve efficiency, offer fast answers and key ...
    ... purposes. In this paper we outline our approach to development of a business intelligence system for mine safety illustrated by its application to accident analysis in mines. The aim of the BI system is not only to improve efficiency of mine safety procedures, enable faster answers and key safety ...
    ... kolonja@rgf.bg.ac.rs 13th ISCSM 2016 BELGRADE 2 system consists of several software components representing a combination of different information technologies, where interoperability between diverse software components is secured by a system of ontologies developed for mining engineering named ...

  • Permanent GNSS monitoring of landslide Umka

    Mileva Samardžić Petrović, Jovan Popović, Uroš Đurić, Biljana Abolmasov, Marko Pejić, Miloš Marjanović (2020)
    Клизиште Умка је једно од највећих насељених активних клизишта у Србији. Активност клизишта Умка се прати већ више од 85 година, различитим геотехничким и геодетским техникама. Од 2010. године, активност kлизишта се континуирано прати у реалном времену аутоматизованим перманентним системом за праћење базираним на Глобалним навигационим сателитским системима (ГНСС). Поред тога, од 2018. године активност клизишта се додатно прати кинематичким ГНСС одређивањем положаја скупа карактеристичних тачака као и применом UAV фотограметрије. Главни циљ овог рада је приказ резултата опажања три ...
    клизиште, перманентно праћење, ГНСС
    ... main characteristics of the established automated GNSS monitoring system can be find in Erić et al. [6]. Generally, the Umka monitoring system consists of GNSS network and supporting software solutions. The first part of the system, the network, consists of several reference points and one object ...
    ... geodetic techniques. Since 2010, landslide activity has been continuously monitored by automated permanent Global Navigation Satellite System (GNSS) based monitoring system in real time. Furthermore, since 2018 landslide activity has been monitored by GNSS kinematic positioning of a set of characteristic ...
    ... types of complex monitoring automated systems found its use in various engineering disciplines. The Global Navigation Satellite System (GNSS) based monitoring system is one of the widely used systems, used in order to assess the dynamics of the landslide phenomenon and potentially prevent possible ...

  • A tool for identifying the criticality in the disordered systems with metastable dynamics

    Svetislav Mijatović, Dragutin Jovković, Sanja Janićević, Stefan Graovac, Đorđe Spasojević (2021)
    Физика кондензоване материје

  • Middle Miocene otoliths of freshwater fishes from the Vracevic Lake (Serbian Lake System)

    Katarina Bradić-Milinović, Ljupko Rundić, Werner Schwarzhans (2021)
    средњи миоцен, отолити, Врачевић, Ваљевско-mионички басен, Српски језерски систем

  • Hydrochemical impact of the hydraulic tunnel on groundwater in the complex aquifer system in Pirot, Serbia

    Marina Ćuk, Igor Jemcov, Ana Mladenović, Marina Čokorilo Ilić (2020)
    Hidrogeohemijski procesi, hidrohemijske promene, karstna izdan, tunel pod pritiskom, multivarijantne statističke analize

  • Novel Hybrid MPSI–MARA Decision-Making Model for Support System Selection in an Underground Mine

    Miloš Gligorić, Zoran Gligorić, Suzana Lutovac, Milanka Negovanović, Zlatko Langović (2022)
    objektivne težine kriterijuma, MPSI metoda, višekriterijumsko odlučivanje, MARA metoda, izbor sistema podgrade, podzemna eksploatacija

  • The influence of back-arc extension direction on the strain partitioning associated with continental indentation: Analogue modelling and implications for the Circum-Moesian Fault System of South-Eastern Europe

    Nemanja Krstekanić, Ernst Willingshofer, Liviu Matenco, Marinko Toljić, Uroš Stojadinović (2022)
    analogno modelovanje, raspodela deformacija, transkurentno rasedanje, bidirekciona ekstenzija, Cirkum-mezijski rasedni sistem

  • Evaluation of the effects of wastewater heat pump integration into district heating systems by simulation

    Dejan Ivezić, Marija Živković, Dimitrije Manić, Aleksandar Madžarević, Boban Pavlović, Dušan Danilović (2023)
    The integration of wastewater heat pumps (using purified water) in district heating systems is analyzed in this paper. The simulation procedure is proposed to analyze the impacts of stochasticity of purified water temperature and flow to heat pump integration and operation. The analysis includes calculation of the daily and seasonal coefficient of performance, as well as fossil fuel savings and CO2 emission reduction due to wastewater heat pump use. The proposed procedure is implemented for the case study in ...
    otpadne vode, toplotna pumpa, daljinsko grejanje, simulacija

  • The effect of finite driving rate on avalanche distributions

    Sonja Radić, Sanja Janićević, Dragutin Jovković, Đorđe Spasojević (2021)
    Statistics, Probability and Uncertainty,Statistics and Probability,Statistical and Nonlinear Physics

  • Definition of groundwater genesis and circulation conditions of the complex hydrogeological karst system Mlava–Belosavac–Belosavac-2 (eastern Serbia)

    Ljiljana Vasić, Saša Milanović, Zoran Stevanović, Laszlo Palcsu (2020)
    Geochemistry and Petrology

  • Hydraulic impact of pressure transients from water conveyance tunnel on the complex hydrogeological system: A case study HPP

    Igor Jemcov, Maja Todorović, Aleksandar Jemcov, Marina Ćuk Đurović (2024)
    Tunel pod pritiskom, Unutrašnji pijezometri, Tranzijenti pritiska, Karstna izdan, Pukotinska izdan, Hidraulički odziv
    ... Tunn. Undergr. Space Technol. (2010) D.Li et al. Case studies of groundwater flow into tunnels and an innovative Water- gathering system for water drainage Tunn. Undergr. SpL. Tech. (2009) A. Mangin Pour une meilleure connaissance des systemes hydrologiques a partir des analyses corrćlatoire ...
    ... cal system: A case study HPP Igor Jemcov, Maja Todorović, Aleksandar Jemcov, Marina Ćuk Đurović Дигитални репозиторијум Рударско-геолошког факултета Универзитета у Београду [ДР РГФ] Hydraulic impact of pressure transients from water conveyance tunnel on the complex hydrogeological system: A case ...
    ... ; (3) a well-structured karst aquifer system influenced by WMO transients; (4) afault-controlled zone of deep hypogene karst aquifer discharge highly influenced by WMOo transients; and (5) an aquifer with a dominant development of the karst conduit system highly influenced by WMO transients. The ...

  • Development of an integrated model for open-pit-mine discontinuous haulage system optimization

    Miodrag Čelebić, Dragoljub Bajić, Sanja Bajić, Mirjana Banković, Duško Torbica, Aleksej Milošević , Dejan Stevanović (2024)
    equipment selection, mine mechanization, expert judgment, linguistic variables, MCDM, FAHP

  • Fuzzy optimization in hydrodynamic analysis of groundwater control systems: Case study of the pumping station “Bezdan 1”, Serbia

    Dragoljub Bajić, Dušan Polomčić (2014)
    A groundwater control system was designed to lower the water table and allow the pumping sta-tion “Bezdan 1” to be built. Based on a hydrodynamic analysis that suggested three alternative solutions, mul-ticriteria optimization was applied to select the best alternative. The fuzzy analytic hierarchy process methodwas used, based on triangular fuzzy numbers. An assessment of the various factors that influenced the selec-tion of the best alternative, as well as fuzzy optimization calculations, yielded the “weights” of the alternativesand the ...
    groundwater lowering, groundwater management scenario, fuzzy analytic hierarchy process,expert knowledge, triangular fuzzy numbers, linguistic variables
    ... s.l.) were used in the predictive hydrodynamic analysis. The groundwater con- trol system is comprised of 12 wells, whose capacity is 40 l/s each. The water table “stabi- lizes” after 7 days of operation of the system. • Alternative 3 (A3): In this case, lowering of the water table was simulated using ...
    ... The groundwater control system is comprised of 17 wells, whose capacity is 40 l/s each. The time needed to lower the water table to below the design elevation is 8.5 days. Based on the predictive analysis and the three iden- tified alternatives for the groundwater control system, as described in POLOMČIĆ ...
    ... and the eleva- tion of the water table for each alternative. • Characteristics of the groundwater control system (K2), which included the number of components of the groundwater control system, where the sys- tem was analyzed and its cost-effectiveness and flexibility assessed. In the present study ...

  • 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 ...
    ... to 280,000 EUR (excl. VAT). The new biomass DH system amortizes dynamically within 10.5 years. The internal rate of return of the biomass DH system reaches 8.66%, and the net present value is 56,000 EUR. It was shown in [4] that a new biomass DH system is economically advantageous compared to a ref ...
    ... refurbishment of the existing fossil-fueled DH system. In addition, the new biomass DH system, compared to the refurbished fossil-fueled DH system, avoids the thermal utilization of 2.65 GWh/a of heavy fuel oil and the emission of 798 t/a of CO2 (equivalent). 3. Business Models for Development of Biomass ...
    ... utilization chain are presented. 2. Biomass project in Kostojevići The existing district heating system in Kostojevići uses heavy fuel oil for heat production to supply households and public buildings. The system has been operating since 2007 as a part of the Public Utility Company (PUC) “BB term” from Bajina ...

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

    Ivan Obradović, Ranka Stanković, Olivera Kitanović, Jelena Prodanović (2011)
    ... application of this e-learning support system. Hence, a decision was made to introduce Moodle to the already existent blended learning system at FMG. Moodle is a free and open source (published under the GNU Public License) LMS (Learning Management System) platform. From a technical point of ...
    ... systems, Information system design, and GIS (Geographic Information System) technologies. InfoTech course material is hence not organized on a weekly basis but rather by different topics. Namely, GIS technologies are, for example, one of the topics of the Information system design course, whereas ...
    ... studies. The main motivation for introducing a blended learning system came from the fact that in traditional face-to-face learning, the students were prone to taking a basically passive role. Thus the new learning system was aimed at turning the student role in the learning process to a more ...

  • A fuzzy-based decision support model for effectiveness evaluation - a case study of examination of bulldozers

    Miloš Tanasijević, Predrag Jovančić, Dejan Ivezić, Uglješa Bugarić, Radiša Đurić (2019)
    Effectiveness evaluation is one of the basic components of engineering asset management and maintenance engineering in general. Effectiveness is an overall concept representing a measurement of quality of service level for the analyzed engineering system. This concept contains a series of partial indicators relating to time in operation and time for maintenance activities, as well as functional properties of the system. This article describes the analysis and structuring of partial indicators, as well as the development of a model ...
    Efikasnost, Fazi zaključivanje, Prikupljanje podataka, Buldozer

  • Development and Evaluation of Three Named Entity Recognition Systems for Serbian - The Case of Personal Names

    Branislava Šandrih, Cvetana Krstev, Ranka Stanković (2019)
    In this paper we present a rule- and lexicon-based system for the recognition of Named Entities (NE) in Serbian news paper texts that was used to prepare a gold standard annotated with personal names. It was further used to prepare training sets for four different levels of annota tion, which were further used to train two Named Entity Recognition (NER) sys tems: Stanford and spaCy. All obtained models, together with a rule- and lexicon based system were evaluated on ...
    NER, Named Entity Recognition Systems, Serbian, Personal Names
    ... SRPNER. The new version of this system recognizes more variations for naming persons: distinguished per- sons and first names alone. Moreover, system dis- tinguishes names used for men from those used for women (Krstev et al., 2015). Presented results show that the system was more successful in rec- ognizing ...
    ... than women. The output of the system are texts with XML tags for recognized entities inserted in them. Since the system allows embedded NEs, recognized names of persons can be components of other NEs, e.g. organizations. 2.2 The Preparation of the Gold Standard The system presented in the previous section ...
    ... obtained models, together with a rule- and lexicon- based system were evaluated on two sam- ple texts: a part of the gold standard and an independent newspaper text of approx- imately the same size. The results show that rule- and lexicon-based system out- performs trained models in all four sce- narios (measured ...

  • Unraveling Innerworkings of Magmatic System Beneath the East Pacific Rise 9º50’N

    Milena Marjanović, Suzanne M. Carbotte, Alexandre Stopin, Felix Waldhauser, Satish C. Singh, René-Édouard Plessix, Miloš Marjanović, Malden R. Nedimović, Juan Pablo Canales, Hélène D. Carton, Javier Escartin, John C. Mutter (2021)
    ... Измењено: 2023-10-14 04:33:12 Unraveling Innerworkings of Magmatic System Beneath the East Pacific Rise 9º50’N Milena Marjanović, Suzanne M. Carbotte, Alexandre Stopin, Felix Waldhauser, Satish C. Singh, René-Édouard Plessix, Miloš Marjanović, Malden R. Nedimović, Juan ...
    ... Escartin, John C. Mutter Дигитални репозиторијум Рударско-геолошког факултета Универзитета у Београду [ДР РГФ] Unraveling Innerworkings of Magmatic System Beneath the East Pacific Rise 9º50’N | Milena Marjanović, Suzanne M. Carbotte, Alexandre Stopin, Felix Waldhauser, Satish C. Singh, René-Édouard Plessix ...
    ... Investigations: Magmatic, Volcanic, Hydrothermal and Biological Processes chaired by Michael Perfit Title: Unraveling Innerworkings of Magmatic System Beneath the East Pacific Rise 9º50’N Authors: Milena Marjanović1, Suzanne M. Carbotte2, Alexandre Stopin3,4, Felix Waldhauser2, Satish C. ...

  • Managing mining project documentation using human language technology

    Aleksandra Tomašević, Ranka Stanković, Miloš Utvić, Ivan Obradović, Božo Kolonja (2018)
    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 documentation

  • Design of a sucker rod pumping system

    Ana Ponoćko (2024)
    For a long time in the history of oil production, sucker rod pumps have been the first and in many cases the only choice when it comes to mechanical extraction methods. Proper selection of each individual element of the system enables optimization, which entails benefits in the form of increased efficiency and reduced costs. The first part of the paper presents the underground and surface equipment of the rod pump and describes the operation of the entire system. The ...
    sucker rod pump, fluid production, mechanical extraction methods,, Prosper, QROD, RODSTAR
    ... Измењено: 2024-09-23 10:01:42 Design of a sucker rod pumping system Ana Ponoćko Дигитални репозиторијум Рударско-геолошког факултета Универзитета у Београду [ДР РГФ] Design of a sucker rod pumping system | Ana Ponoćko | | 2024 | | http://dr.rgf.bg.ac.rs/s/repo/item/0008833 Дигитални ...
    ... individual element ofthe system enables optimization, which entails benefits in the form of increased efficiency and reduced costs. The first part of the paper presents the underground and surface equipment of the rod pump and describes the operation of the entire system. The second part involves ...
    ... and describes the operation of the entire system. The second part involves an analysis and calculations using the "RODSTAR", "QRod" and "Prosper" software, which will define differences in calculations between software for Sucker Rod pumps. 2 SYSTEM FOR ROD PUMPING A sucker rod pump is no more ...