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2823 items
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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 ...Dejan Ivezić, Marija Živković, Dimitrije Manić, Aleksandar Madžarević, Boban Pavlović, Dušan Danilović. "Evaluation of the effects of wastewater heat pump integration into district heating systems by simulation" in Thermal Science, National Library of Serbia (2023). https://doi.org/10.2298/TSCI220813168I
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Definition of Circulation Conditions and Groundwater Genesis of the Complex Krupaja Hydrogeological Karst System (Eastern Serbia)
Management, Monitoring, Policy and Law,Renewable Energy, Sustainability and the Environment, Geography, Planning and Development, Building and Construction... influx of thermal water (at 25 *C) from the deeper parts of the system, and that there is also an influence, i.e., contact with “young” waters from the cold part of the system, at depths greater than 200 m. Based on this, it is assumed that the channels of group t3 developed to depths of 400500 ...
... subthermal, and thermal groundwater karst channels, and groundwater mean residence time. The complex karst system is located on the western edge of the Beljanica Massif, in the eastern part of Serbia, within the Carpatho-Balkanides karst. The complex karst aquifer is mostly drained via the strong ...
... recharge, causes the existence of different types of water, in terms of temperature, chemical composition, and age, within the same karst system. In this research, complex investigations of the Krupaja arst system aimed to provide a large number of new results; the system was reviewed and analyzed ...Ljiljana Vasić, Saša Milanović, Tina Dašić. "Definition of Circulation Conditions and Groundwater Genesis of the Complex Krupaja Hydrogeological Karst System (Eastern Serbia)" in Sustainability, MDPI AG (2023). https://doi.org/10.3390/su151411146
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Effectiveness Analysis of Different Bucket-wheel Excavators
Coal production in open-pit lignite mines in the Republic of Serbia is performed with continuous work systems. In addition to coal production, the same systems are used for the exploitation of large quantities of overburden. According to the reliability concept, continuous systems are in linear connection. If the failure occurs in one part of the system, that will produce a downtime of the entire system. The initial and most important factor of continuous systems is the bucket-wheel excavator. It ...Stevan Đenadić, Predrag Jovančić, Dragan Ignjatović, Miloš Tanasijević, Filip Miletić. "Effectiveness Analysis of Different Bucket-wheel Excavators" in 8th International Conference Mining and Environmental Protection, Sokobanja, 22-25 September 2021, University of Belgrade, Faculty of Mining and Geology, Belgrade, Serbia (2021)
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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... lly adjust system parameters based on new data. For example, if changes in operating conditions or pump performance are detected, algorithms can automatically adjust parameters to maintain optimal operation. Machine learning can assist in continuous monitoring and quality control of pump operation ...
... maintain a continuous flow of oil from depth to the surface directly impacts production efficiency and costs. Therefore, continuous monitoring and improvement of their performance is essential to ensure optimal operation and minimize failures.This paper will focus on the application of machine ...
... image into different levels of resolution or scales. There are various types of wavelet functions, differing in shape and smoothness, and the choice depends on what aspect of the signal or image is being analyzed. There are two types of wavelet transformations: Continuous Wavelet Transform (CWT) and ...Maja Trikić. Application of machine learning for diagnosing the operation of a deep well pump in oil production, 2024
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Integrated Stratigraphy of the Middle–Upper Jurassic of the Krížna Nappe, Tatra Mountains
carbon and oxygen isotopes, radiolarians, calcareous dinoflagellates, radiolarites, Krížna Nappe, West ern Carpathians, Tethys... slope of Pošrednia Kopka Hill (Fig. 1; Table 1). It is composed of three partial sections (L, Lb and Ld), with a measured thickness of 66 m (Fig. 4A). The lowermost part of the section (L) is exposed in a small rocky cliff on the southern slopes of Pošrednia Kopka Hill. The middle part of the ...
... 15. Summary of correlation of the Bajocian-Early Tithonian &IŠC curves from the Križna Unit of the Tatra Mountains. mainly because of insufficicnt biostratigraphic data. In the interval 84–95 m of the lower part of the grey nodular lime- stones, the Š IŠC values reach a minimum of about 1.1% ...
... continental crust (e.g., Plašienka, 2012). As a result, the Jurassic successions of the STRATIGRAPHY OF THE MIDDLE-UPPER JURASSIC OF THE KRIŽNA NAPPE 3 Fatricum Domain are characterized by an almost continuous record of the prograding Tethyan transgression, displaying, a transition from littoral ...Renata Jach, Nevenka Đerić, Špela Goričan, Daniela Reháková. "Integrated Stratigraphy of the Middle–Upper Jurassic of the Krížna Nappe, Tatra Mountains" in Annales Societatis Geologorum Poloniae (2014)
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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 ...... In Proceedings of 52nd annual meeting of the association for computational linguistics: system demonstrations, pages 55–60. Petrov, S., Das, D., and McDonald, R. (2012). A Univer- sal Part-of-Speech Tagset. In Nicoletta Calzolari (Con- ference Chair), et al., editors, Proceedings of the Eight In ...
... Keywords: Part-of-Speech tagging, lemmatization, corpus, evaluation, Serbian, morphological dictionary 1. Introduction The task of assigning to each token its Part-of-Speech cat- egory (noun, verb, adjective, etc.) is a common Natural Language Processing (NLP) task, known as Part-of-Speech tagging ...
... dictionaries, MULTEXT-East and Universal Part-of-Speech tagset. The trained models will be used to publish the new version of the Corpus of Contemporary Serbian as well as the Serbian literary corpus. The performance of developed taggers were compared and the impact of training set size was investigated ...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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Anisotropic grossular–andradite garnets: Evidence of two stage skarn evolution from Rudnik, Central Serbia
This paper presents LA-ICP-MS data for garnets from the Rudnik skarn deposit (Serbia), which range from Grs45–58Adr40–52Alm2–3 in the core and Adr70–97Grs2–29Sps1 in the rim displaying anisotropy and zoning. In spite of wide compositional variations the garnets near the end-member of andradite (Adr > 90) are generally isotropic. Fe-rich rims exhibit LREE depletion and flat HREE pattern with weak negative Eu anomaly, including higher As and W contents. On the other side, the Fe-poorer core shows flat REE pattern ...... presents the results of investigations of zoning grandite patterns in skarn samples SN-310 from the borehole coordinates (44.125887°N, 20.507926°E), applying optical microscopy, EMPA and LA-ICP-MS methods, with the aim of constraining hydrothermal system evolution. The observed trend of the REE in garnet ...
... testify to large changes of pressure and temperature. In fact, garnet has kept growing since the initial first stage by infiltration of external hydrothermal fluids into the system. The pulse of magmatic- derived hydrothermal fluids has caused chemical overstepping of the previous garnet formed ...
... Carpathian–Dinaridic orogenic system: correlation and evolu- tion of tectonic units. Swiss Journal of Geoscience 101, 139–183. https://doi.org/10.1007/s00015-008-1247-3 Sladić-Trifunović M., Pantić N. & Mihajlović Đ. 1989: The signifi- cance of clastic limestone in the section of Bela Reka – Resnik, for ...Bojan Kostić, Danica Srećković-Batoćanin, Petyo Filipov, Pavle Tančić, Kristijan Sokol. "Anisotropic grossular–andradite garnets: Evidence of two stage skarn evolution from Rudnik, Central Serbia" in Geologica Carpathica, Central Library of the Slovak Academy of Sciences (2021). https://doi.org/10.31577/GeolCarp.72.1.2
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Дефинисање хидрауличког механизма истицања карстних подземних вода применом биваријантне анализе временских серија
Вељко Мариновић (2022)Bivariate analysis was applied within the cross-correlation in time and the gain function as part of the cross-spectral function in the frequency domain, to the time series of precipitation and discharge of the Oko Bijela and Bosna karst springs in the period 2015-2020. Bivariate analysis showed a very fast reaction of the Oko Bijela spring and a reaction delay at the Bosna spring, which indicate a very weak amortization of the input signal within the Oko Bijela system and ...Вељко Мариновић. "Дефинисање хидрауличког механизма истицања карстних подземних вода применом биваријантне анализе временских серија" in Мултидисциплинарна конференција “Kарст 2022 - Значај, стање и перспективе коришћења и заштите ресурса у карсту", Српска академија наука и уметности (2022)
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Arsenic in tape waters of the south Pannonian basin (Serbia) and arsenic risk assessment
Petar Papić, Marina Ćuk, Maja Todorović, Jana Stojković, Bojan Hajdin, Nebojša Atanacković, Dušan Polomčić (2012)... within the territory of Vojvodina were used to perform arsenic con- centration analyses as part of studies conducted by the University of Belgrade, Faculty of Mining and Geology [20], “Geozavod” from Belgrade [21], as well as the Faculty of Natural Sciences of the University of Novi Sad [22]. Total arsenic ...
... 250 µg/L [19]. The aim of our study was to report current distribution of arsenic in drinking water from the public water supply system in the South Pannonian Basin and to show the effects of drinking arsenic-rich water. 1784 Papić P., et al. Fig. 1. Geographical location of the test area. A u th ...
... Protection Agency, Intergrated Risk Information System [32-34]. Based on the results of the measurement of As con- centrations in the raw groundwater and the assumption that average 70-kg adults with an average lifespan of 73.9 years in Serbia would intake 1.5 L/day of untreated groundwater rich in As for 30 ...Petar Papić, Marina Ćuk, Maja Todorović, Jana Stojković, Bojan Hajdin, Nebojša Atanacković, Dušan Polomčić. "Arsenic in tape waters of the south Pannonian basin (Serbia) and arsenic risk assessment" in Polish Journal of Enivronmental Studies 21 no. 6, Olsztyn, Poland : Polish Journal of Enivronmental Studies (2012): 1783-1790
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An Approach to Development of Bilingual Lexical Resources
... outlines the usage of the system with examples illustrating the development of Biblimir. 2. SYSTEM ARCHITECTURE Bibliša is a complex system composed of several modules. Targeted at textual resources in the form of collections of TMX documents and the corresponding metadata, the system uses other ...
... pair of synsets to be related, and then clicking on the two arrows symbol. Figure 3: Part of the web page for Biblimir input. 4. DEVELOPING BIBLIMIR We applied Bibliša to search TMX document collections generated from INFOtheca using available resources. An overview of the size of these ...
... language. One type of lexical resources, morphological e-dictionaries, together with the system of rules for compound inflection, finite automata and transducers, represent the basis for morphological expansion of queries. As for semantic and bilingual expansion, the system relies on Serbian ...Stanković Ranka, Obradović Ivan, Trtovac Aleksandra. "An Approach to Development of Bilingual Lexical Resources" in Proceedings of the Fifth Balkan Conference in Informatics BCI 2012, Workshop on Computational Linguistics and Natural Language Processing of Balkan Languages – CLoBL 2012, September 2012, Novi Sad : BCI (2012)
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Groundwater management by riverbank filtration and an infiltration channel, the case of Obrenovac, Serbia
Dušan Polomčić, Bojan Hajdin, Zoran Stevanović, Dragoljub Bajić, Katarina Hajdin. "Groundwater management by riverbank filtration and an infiltration channel, the case of Obrenovac, Serbia" in Hydrogeology Journal, Berlin, Heidelberg : Springer, International Association of Hydrogeologists (2013). https://doi.org/10.1007/s10040-013-1025-9
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Wordnet Development Using a Multifunctional Tool
Ivan Obradović, Ranka Stanković (2007)In this paper we present a multifunctional tool for manipulating heterogeneous language resources. The tool handles electronic dictionaries, wordnets and aligned texts, and provides for their synchronous use in various tasks. We focus here on the description of the possibilities this tool offers in the development of wordnets. Besides the wordnet module which enables parallel handling of two wordnets, other modules, such as the module for morphological dictionaries and the module for aligned texts, as well as available finite ...... simultaneous usage of two wordnets for different languages is supported - management of a system of electronic dictionaries which consist of morphological dictionaries of lemmas for simple and compound words, but also of bilingual and multilingual dictionaries - manipulation of parallel aligned ...
... pairs to represent the concept of the synset. With a particular concept in mind, one approach of the lexicographer to the solution of the first problem would be an inspection of the part of the wordnet where he/she believes a hypernym of the new synset might be found, and if an appropriate ...
... the latter case the system will retrieve not only all synsets with words matching the search string(s), but also those that contain words which contain the specified string(s) as their part. On the other hand, the user can use an Xpath expression to retrieve synsets on basis of various other criteria ...Ivan Obradović, Ranka Stanković. "Wordnet Development Using a Multifunctional Tool" in Proceedings of the International Workshop Computer Aided Language Processing (CALP) '2007, Borovets, Bulgaria, September 2007, - (2007)
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Introduction to special section: Characterization of hydrocarbon and geothermal resource potential and carbon sequestration opportunities of the Pannonian Basin
Balázs Németh, Gábor Tari, Gábor Bada, Dejan Radivojević, Bruno Tomljenovic, Csaba Krézsek. "Introduction to special section: Characterization of hydrocarbon and geothermal resource potential and carbon sequestration opportunities of the Pannonian Basin" in Interpretation, AAPG SEG (2018). https://doi.org/10.1190/INT-2017-1207-SPSEINTRO.1
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Influence of Initial Treatment on the Survival and Recurrence in Patients With Differentiated Thyroid Microcarcinoma
... performed in 2). Surgery followed by RAI ablation was performed initially in 63 patients, combined with neck dissection in 23 of them. Patients were classified according to the UICC 7th TNM classification and staging system. However, 9 patients submitted to surgical procedures less than TT/NTT were not staged ...
... Among the studied group, only 5.4% of patients had follicular thyroid cancer; the remainder was classified as papillary carcinoma. Total thy- roidectomy was performed in 50 patents, combined with neck dissec- tion in 12 of them. At the time of diagnosis, approximately 13% of patients were managed with less ...
... nodes (N1M0), whereas 1.7% of the patients had distant metastases combined with regional metastases (N1M1). During the course of disease, TNM classification and staging were revised owing to the alteration in the course of disease. Thus, one patient whowas initially free of metastases (N0M0) developed ...Jasna Mihailović, Ljubomir Stefanović, Ranka Stanković. "Influence of Initial Treatment on the Survival and Recurrence in Patients With Differentiated Thyroid Microcarcinoma" in Clinical Nuclear Medicine, Lippincott Williams & Wilkins (2013). https://doi.org/10.1097/RLU.0b013e3182872ed2
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Rift sequence stratigraphy and its contribution to source rock understanding – Serbian part of Pannonian Basin
Filip Anđelković, Dejan Radivojević (2018)... lacustrine) of hydrocarbon generation. Because of that it is important to use the rift se- quence stratigraphy approach which should led to better understanding of the petroleum system elements. Acknowledgements. The second author wishes to thank the Ministry of Education and Science, Republic of Serbia ...
... Rift sequence stratigraphy and its contribution to source rock understanding – Serbian part of Pannonian Basin Filip Anđelković, Dejan Radivojević University of Belgrade, Faculty of Mining and Geology, Department of Regional Geology, Belgrade, Serbia; e-mails: filip.andjelkovic@rgf.rs, dejan.radiv ...
... g source rocks in Croatian part of Pannonian Basin (Lučić et al., 2001). Those sediments are absent in vicinity of biggest Serbian oil fields, since the rifting of major depressions appeared later. The different timing of rifting affects the age (Lower Miocene to Pontian) and depositional environ- ...Filip Anđelković, Dejan Radivojević. "Rift sequence stratigraphy and its contribution to source rock understanding – Serbian part of Pannonian Basin" in CBGA, Salzburg, Austria, Septembar 10-13, 2018, Bulgarian Academy of Science (2018)
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Mapping and classifying large deformation from digital imagery: application to analogue models of lithosphere deformation
kontinentalna tektonika: kompresija, kontinentalna tektonika: ekstenzija, kontinentalna tektonika: transkurentni i transformni rasedi, pukotine, rasedi, zone snažnih deformacija, kinematika deformacija kore i omotača, teorijska mehanika, modelovanje... in the Eastern Alps, part 1: boundary conditions and experiments scaled for gravity, Tectonics, 10(2), 245–256. Rutter, E., Faulkner, D. & Burgess, R., 2012. Structure and geological history of the Carboneras Fault Zone, SE Spain: part of a stretching transform fault system, J. Struct. Geol., 45 ...
... All numbers are in centimeters. (b) Model configuration at the end of the experiment. Moving plate kinematics include the first step of 4 cm of translation and the second step of combined translation/rotation resulting in total of 9 cm of northward translation and 4.5◦ clockwise rotation. (c) Strength ...
... faults and new backthrusts By the end of the northward translation stage (4 cm of moving sheet displacement, at about 30 min), all R-shears have become connected to form a continuous strike-slip fault zone where the eastern fault (9) takes up most of the displacement, see Fig. 14. This process is also ...Taco Broerse, Nemanja Krstekanić, Cor Kasbergen, Ernst Willingshofer. "Mapping and classifying large deformation from digital imagery: application to analogue models of lithosphere deformation" in Geophysical Journal International, Oxford University Press (OUP) (2021). https://doi.org/10.1093/gji/ggab120
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Groundwater gravitational circulation of Karst Veliko Vrelo and Malo Vrelo springs by isotope and the noble gas method: case study of the Beljanica Massif
Earth-Surface Processes, Geology, Pollution, Soil Science, Water Science and Technology, Environmental ChemistryLjiljana Vasić, Laszlo Palcsu, Huang Fen. "Groundwater gravitational circulation of Karst Veliko Vrelo and Malo Vrelo springs by isotope and the noble gas method: case study of the Beljanica Massif" in Environmental Earth Sciences, Springer Science and Business Media LLC (2019). https://doi.org/10.1007/s12665-019-8294-0
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Alpine thermal events in the central Serbo-Macedonian Massif (southeastern Serbia)
Milorad D. Antić, Alexandre Kounov, Branislav Trivić, Andreas Wetzel, Irena Peytcheva, Albrecht von Quadt (2015)Milorad D. Antić, Alexandre Kounov, Branislav Trivić, Andreas Wetzel, Irena Peytcheva, Albrecht von Quadt. "Alpine thermal events in the central Serbo-Macedonian Massif (southeastern Serbia)" in International Journal of Earth Sciences, Springer Science and Business Media LLC (2015). https://doi.org/10.1007/s00531-015-1266-z
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Parallel Bidirectionally Pretrained Taggers as Feature Generators
In a setting where multiple automatic annotation approaches coexist and advance separately but none completely solve a specific problem, the key might be in their combination and integration. This paper outlines a scalable architecture for Part-of-Speech tagging using multiple standalone annotation systems as feature generators for a stacked classifier. It also explores automatic resource expansion via dataset augmentation and bidirectional training in order to increase the number of taggers and to maximize the impact of the composite system, which ...Ranka Stanković, Mihailo Škorić, Branislava Šandrih Todorović. "Parallel Bidirectionally Pretrained Taggers as Feature Generators" in Applied Sciences, MDPI AG (2022). https://doi.org/10.3390/app12105028
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Strain partitioning along a curved strike-slip fault system during indentation: inferences from analogue modelling
Nemanja Krstekanić, Ernst Willingshofer, Taco Broerse, Liviu Matenco, Marinko Toljić, Uroš Stojadinović (2021)Nemanja Krstekanić, Ernst Willingshofer, Taco Broerse, Liviu Matenco, Marinko Toljić, Uroš Stojadinović. "Strain partitioning along a curved strike-slip fault system during indentation: inferences from analogue modelling" in GeoMod 2021, Doorn, the Netherlands, 19.-23.9.2021., Utrecht University (2021)