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Упит dcterms_subject_txt:Geologic information system

760 items

  • 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
    ... needed to balance the unit, prime mover size, overall system efficiency, daily energy consumption, monthly electricity costs, and other useful information. Additionally, RodStar allows you to enter inflow performance data to design a pumping system for any pump intake pressure. It helps you calculate ...
    ... pumps. The software simulates the behavior of the pumping system under various operational conditions, enabling engineers to predict performance and identify potential issues [13]. 35 5.1.1. RodStar Features RodStar retains the information you input when starting a new case from scratch. You ...
    ... 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 ...

  • 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 influence of alkyl polyglucosides (and highly ethoxylated alcohol boosters) on the phase behavior of a water/toluene/technical alkyl polyethoxylate microemulsion system

    Marija Ilic, Franz-Hubert Haegel, Vesna Pavelkic, Dragan Zlatanovic, Snezana Nikolic-Mandic, Aleksandar Lolic, Zoran Nedic (2016)
    The influence of additives (alkyl polyglucoside, Glucopon 600 CS UP and alcohol ethoxylate C18E100) on the behavior of the water/toluene/Lutensol ON 50 (technical oxoalcohol, i-C10E5) microemulsion system as a function of temperature and composition has been investigated. The phase behavior of the microemulsions was determined by vertical sections through the Gibbs phase prism (fish-like phase diagrams). Alkyl polyglucoside shifts the one phase region to lower temperatures compared with water/toluene/Lutensol ON 50 mixtures. This is contrary to the expectation, considering ...
    микроемулзија, толуен, алкил полиглукозид, оксоалкохол етоксилат, појачивач ефикасности, „fish“ дијаграми
    ... / 20 of system with C, E, jE o phase boundary 10 / LC of system with C„E, j| ——— l utensol ON 50 T( 'C ) fFigure 2. Phase diagrams of wafer/toluene/CyoEs and water/toluene/Lutenso/ ON 50 at equa!l mass fractions of water ana toluene (a = 0.5). The phase boundaries of the system with Cx+oEs ...
    ... (technical information sheet of BASF). Glucopon 600 CS UP altky! polyglucoside (alkyl chain containing 10 to 16 carbon atoms, and an aver- age number of glucose units of 1.4) is a commercial nonionic sugar surfactant containing 51% active mat- ter and 49 mass% water (technical information sheet ...
    ... ETHOXYLATED ALCOHOL BOOSTERS) ON THE PHASE BEHAVIOR OF A WATER/TOLUENE/ fTECHNICAL ALKYL POLYETHOXYLATE MICROEMULSION SYSTEM Article Highlights • Addition of sugar surfactant to system of water/tolune/Lutensol ON 50 was investigated • Sugarsurfactant shifts the phase behavior to lower temperature ...

  • Српски језик у дигиталном добу -- The Serbian Language in the Digital Age

    Duško Vitas, Ljubomir Popović, Cvetana Krstev, Ivan Obradović, Gordana Pavlović-Lažetić, Mladen Stanojević (2012)
    Serbian language
    ... complex soware systems to help us already today to: ‚ find information with a search engine; ‚ check spelling and grammar in a word processor; ‚ view product recommendations in an online shop; ‚ follow the spoken directions of a navigation system; ‚ translate Web pages via an online service. Language ...
    ... years, the system needs to determine the relevant range of years, taking into account the present year. e query then needs to bematched against a huge amount of unstructured data to find the pieces of infor- mation that are relevant to the user’s request. is pro- cess is called information retrieval ...
    ... companies, the system also needs to recognise a par- ticular string of words in a document represents a com- pany name, using a process called named entity recogni- tion. A more demanding challenge is matching a query in one language with documents in another language. Cross-lingual information retrieval ...

  • 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
    ... ranked them in order of priority. Ruiz et al. (2020) proposed a decision support tool that integrates the AHP algo- rithm into a Geographical Information System (GIS) package for site-suitability assessment of solar power plants. Al Garni et al. (2016) implemented expert pairwise compar- isons into the ...
    ... ets/uploads/2018/02/ipcc_wg3_ar5_annex-iii.pdf. AEBIOM (European Biomass Association), 2015. BASIS, biomass availability and sustainability information system. Report on conversion efficiency of biomass, http://www.basisbioenergy.eu/fileadmin/BASIS/D3.5_Report_on_ conversion_efficiency_of_biomass.pdf ...
    ... of updated information. At the moment, Serbia’s strategic documents and energy studies do not offer up- dated information regarding RESs’ potential, prices, environmen- tal impact, etc. for electricity generation. For more precise pri- oritization and planning, more detailed information about char- ...

  • Multi-word Expressions for Abusive Speech Detection in Serbian

    Ranka Stanković, Jelena Mitrović, Danka Jokić, Cvetana Krstev (2020)
    Ovaj rad predstavlja istraživanja na usavršavanju i unapređenju srpske verzije rečnika Hurtlex, višejezičnog leksikona uvredljivih reči. Posebnu pažnju posvećujemo dodavanju izraza sa više reči (polileksemskih jedinica) koji se mogu smatrati uvredljivim, jer su takvi leksički zapisi veoma važni za postizanje dobrih rezultata u mnoštvu zadataka otkrivanja uvredljivog jezika. Srpski morfološki rečnici se koriste kao osnova za čišćenje podataka i stvaranje rečnika. Istaknuta je veza sa drugim leksičkim i semantičkim resursima na srpskom jeziku i predviđena je izgradnja sistema za ...
    uvredljiv govor, govor mržnje, leksički izvori, višejezični leksikon, izrazi sa više reči
    ... intolerance. The aim was to develop a system which would recognize the news covering these topics, annotating certain components of the text, which, viewed individually or together, indicate the required information. The authors conclude that further development of the system could go in the direction of adding ...
    ... tic procedure for MWE lemma construc- tion (Krstev, 2008; Stanković et al., 2016) that relies on the information about its components already represented in SrpMD. The morpho-syntactic information is automatically assigned to all forms of multi- word expressions, while specific markers that point to ...
    ... versatile corpora. Figure 1 presents a Leximirka panel3 for MWE editing: the syntactic class is assigned to a MWE, components and their morphological information are described which allows automatic production of all inflected forms that can be examined. Specific markers for abusive speech, that are proposed ...

  • 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

  • Medical Domain Document Classification via Extraction of Taxonomy Concepts from MeSH Ontology

    Mihailo Škorić, Mauro Dragoni (2019)
    This paper is a result of a task that was presented to attendants of Keyword Search in Big Linked Data summer school, that was organized by Vienna University of Technology, under the Keystone COST action in the summer of 2017. It presents a specific approach to the classification via creation of minimal document surrogates based on the US National medical library’s MeSH ontology, which is derived from the Medical Subject Headings thesaurus. In a series of previously classified medically ...
    document classification, MeSH, ontology, information extraction
    ... performance of the system. The classification based on ontologies does not depend on the domain in which it is applied, but it certainly depends on the resources available, specifically the ontology or taxonomy used for the classification (Rakesh et al., 2001).Once established, the system may find wider ...
    ... results are evaluated in compresence to previous manual classification of the same documents. KEYWORDS: document classification, MeSH, ontology, information extraction. PAPER SUBMITTED: 21 April 2019 PAPER ACCEPTED: 30 August 2019 Mihailo Škorić mihailo.skoric@rgf.bg.ac.rs University of Belgrade ...
    ... this from working individually for each document, they are merged into one, ∼230MB, in size, with new lines as the border between the documents. Information of importance – doc- ument names ([0-9]+[.]txt), identifiers in them ([A-Z][0-9][0-9]([.][0-9][0- 9][0-9])*) and tags for new row ([\r\n]+) - are ...

  • SASA Dictionary as the Gold Standard for Good Dictionary Examples for Serbian

    Ranka Stanković, Branislava Šandrih, Rada Stijović, Cvetana Krstev, Duško Vitas, Aleksandra Marković (2019)
    У овом раду представљамо модел за избор добрих примера за речник српског језика и развој иницијалних компоненти модела. Метода која се користи заснива се на детаљној анализи различитих лексичких и синтактичких карактеристика у корпусу састављених од примера из пет дигитализованих свезака речника САНУ. Почетни скуп функција био је инспирисан сличним приступом и за друге језике. Дистрибуција карактеристика примера из овог корпуса упоређује се са карактеристиком дистрибуције узорака реченица ексцерпираних из корпуса који садрже различите текстове. Анализа је показала да ...
    Српски, добри примери из речника, аутоматизација израде речника, издвајање својстава, Машинско учење
    ... senses (units) that are further illustrated by examples. Each example is followed by information about the bibliographic source, the author, and optionally about the location, and indirectly related to information about the headword of dictionary entry, its part of speech and linguistic labels assigned ...
    ... important, it needs a more detailed explanation. Namely, the role of the examples is to convey the information about valency and rection of the headword in an implicit way (explicit syntactic information, if required by the Style Guide, is placed before the definition). Since the Style Guide for the ...
    ... dictionary entries, as well as identification of triggers (such as special words, abbreviations or punctuation marks) used to introduce specific information. This analysis enabled the recognition of the entry structure: headword group, grammatical data, etymology, lexical units (senses), multiword ...

  • Development of integrated fuzzy model for mine management optimization

    Miodrag Čelebić, Sanja Bajić, Dragoljub Bajić, Dejan Stevanović, Duško Torbica, Vladimir Malbašić (2023)
    fuzzy logika, višekriterijumsko odlučivanje, ocenjivanje eksperata
    ... proposed optimization procedure highlights the use of knowledge, intu- ition, and experience of engineers to gather all the necessary information about the natural system of a mine. Such an approach prioritizes mining: safety and pro- 1418 M. Čelebić, S. Bajić, D. Bajić et al. vides an efHicient ...
    ... , 76, No 9, 2023 1419 REFERENCES 1| ZADEH L. A. (1965) Fuzzy sets, Information and Control, 8(3), 338-353. ZADEH L. A. (1975) The concept of a linguistic variable and its application to pproximate reasoning,, Information sciences, 8, 199—249. Š| CHANG D. Y. (1996) Applications of the extent ...
    ... that needs to be addressed when planning, ore mining is which methods are adequate and what is the optimal mining; technology? Due to the complex geologic framework of ore deposits, geological exploration has rendered syn- onymous the inherent uncertainties, vagueness, and inaccuracies. As a result ...

  • Mine ventilation system planning using genetic algorithms

    Nikola Lilić, Ranka Stanković, Ivan Obradović (1997)
    The most common problem in contemporary mining practice related to the planning and analysis of ventilation systems is the optimization of partially regulated air distribution in mine ventilation networks. This paper presents a two step optimization procedure for partly regulated air distribution in mine ventilation networks. The first step is the determination of air distribution in all branches using the well known Hardy-Cross method. In the second step the distribution and parameters of air flow regulators with minimum engaged ...
    coal, lignite, and peat; ventilation systems; coal mining; underground mining; ventilation; mathematical models; design; air flow; optimization; calculation methods

  • Extraction of Bilingual Terminology Using Graphs, Dictionaries and GIZA++

    Branislava Šandrih, Ranka Stanković (2020)
    U nauci, industriji i mnogim istraživačkim oblastima, terminologija se brzo razvija. Najčešće, jezik koji je „lingua franca“ za većinu ovih oblasti je engleski. Kao posledica toga, za mnoga polja termini domena su koncipirani na engleskom, a kasnije se prevode na druge jezike. U ovom radu predstavljamo pristup za automatsko izdvajanje dvojezične terminologije za englesko-srpski jezički par koji se oslanja na usaglašeni dvojezični korpus domena, ekstraktor terminologije za ciljni jezik i alat za usklađivanje delova. Ispitujemo performanse metode na domenu ...
    ekstrakcija terminologije, validacija terminologije, GIZA++, grafovi, Unitex, klasifikacija teksta
    ... text. The only system developed specifically for the extraction of MWTs from Serbian texts is a part of LeXimir (Stanković et al., 2016), a tool for management of lexical resources. LeXimir consists of two modules for the terminology extraction. The first module is a rule-based system re- lying on e ...
    ... while translating texts that contain domain terminology. As in the example with a “debugger”, the transcribed version is adopted for everyday use in Information Technologies domain. It is a challenge to produce and maintain up-to-date terminology re- sources, especially for an under-resourced language, such ...
    ... p np or (n.LEMMA ng1 ng2). An example would be: "grf04b;plu;ciljeva pronalaženja informacija;cilj pronalaženja informacija;" (goal of finding information). A Software solution for multi-word units extraction displayed in Figure 2 offers possibilities for general NLP processing on selected corpus (apply- ...

  • Machine Learning and Deep Neural Network-Based Lemmatization and Morphosyntactic Tagging for Serbian

    Ranka Stanković, Branislava Šandrih, Cvetana Krstev, Miloš Utvić, Mihailo Škorić (2020)
    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 ...
    Part-of-Speech tagging, lemmatization, corpus, evaluation, Serbian, morphological dictionary
    ... ing SMD (and its tagset) and the Unitex system,1 with manually performed disambiguation. Besides the basic SMD PoS classes depicted in Table 3 an additional tagset (nPoS) was introduced for subclasses of adjectives, nouns and verbs, providing the information on grammatical gen- der and comparative ...
    ... name Vlada,N+NProp+Hum+First // first name, proper name The additional markers enable mapping of SMD tagset to other tagsets without loss of information (e.g. such a mapping was performed for the production of Serbian MULTEXT-East resources (Krstev et al., 2004)). 2.2. Pre-annotated texts Various ...
    ... used in UPoS, SMD, TT11 and MULTEXT-East (MTE); asterix (*) signifies that a basic tag is not in the tagset but can be deduced from additional information (markers); plus (+) signifies that the same tag is used for a proper super set; minus (-) signifies that the same tag is used for a proper subset ...

  • 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
    ... further research of their potentials. Specific attention is given to coupling methods as well as techniques for securing data and information transfer between system components. As for the implementation issues, we found the approach based on existing software libraries a useful and promising one ...
    ... features of an intercommunicating hybrid system for mine ventilation planing and analysis. The architecture of the system is outlined as well as the characteristic of its components. Another hybrid intelligent system is presented in section 4. This is a hybrid system with both function-replacing and i ...
    ... relational database management system. The system offers safe data archiving for complex data models as this one, as well as all procedures for data manipulation. The use of SQL as a standard query language for data manipulation secures the openness of the hybrid system INVENTS for a connection with ...

  • SrpELTeC: A Serbian Literary Corpus for Distant Reading

    Ranka Stanković, Cvetana Krstev, Duško Vitas (2024)
    U članku je predstavljen SrpELTeC, korpus razvijen u okviru akcije COST Distant Reading for European Literary History (CA16204). Svi romani u SrpELTeC-u su odabrani, pripremljeni i obeleženi korišćenjem zajedničkih principa uspostavljenih za sve jezičke zbirke u Evropskoj zbirci književnog teksta (ELTeC). Navedeni su izazovi i rešenja u pripremi SrpELTeC od nule. Svi romani su ručno kodirani u TEI sa bogatim metapodacima i strukturnim napomenama. Automatska anotacija je uključivala POS-označavanje, lematizaciju i imenovane entitete, oslanjajući se na resurse za obradu ...
    digital humanities, Serbian literature, text corpora, distant reading , linked data, named entity recognition, text analytics

  • Optimization and Analysis of Drilling and Blasting Parameters Using O-Pitblast Software

    Stefan Milanović, Nikola Simić, Lazar Kričak, Milanka Negovanović, Nikola Đokić (2024)
    The development of modern technologies has enabled the application of specialized softwares in the field of mining through various segments and processes, including in works related to drilling and blasting. The application of specialized software for drilling and blasting with the use of modern technologies such as photogrammetry enabled more accurate data from the field for later processing. By processing data and creating a 3D model of the terrain for drilling and blasting works, it can obtain precise data, ...
    optimizacija, 3D model, bušenje, miniranje, O-Pitblast, softver

  • The application of ArcGIS for assessing the potential of solar energy in urban area: The case of Vranje

    Boban Pavlović, Milica Pešić-Georgiadis (2019)
    In order to determine the solar energy potential for a specified location, it is crucial to consider the latitude, altitude, slope, terrain morphology, atmospheric conditions, etc. Such a complex calculation and mapping of solar energy can be done using the ArcGIS geoprocessing tool, named Area Solar Radiation (ASR). By using the ASR tool, supported with the adequate input data, it is possible to calculate the maximum solar radiation energy (irradiation) for a defined area and for a specified time ...
    Obnovljivi izvori energije, potencijal solarne energije, GIS, mapiranje solarnog potencijala
    ... high-resolution satellite images and they provide information about land cover changes in the major part of Europe. Polygonal entities represent a state of land cover differentiated in 44 classes, divided into a 3-level hierarchical classification system (Stojkovic S., 2017). The COPERNICUS website ...
    ... 2019a). Corine means “coordination of information on the environment” and it is a prototype project working on many different environmental issues. As described on the website, Copernicus Land Monitoring Service (CLMS) provides geographical information on the land cover to a broad range of ...
    ... enables the calculation of solar energy potential over a given space and for a specified time interval. The output is a solar map which contains information regarding the quantity of insolation/solar radiation energy for a specified area. Such solar resource calculation and mapping integrated into ...

  • Pre-failure deformation monitoring as rockfall prediction tool

    Miloš Marjanović, Biljana Abolmasov, Zoran Berisavljević, Marko Pejić, Petko Vranić (2021)
    General Engineering
    ... coordinate system originating from the optical center of the instrument. In addition to X,Y,Z and reflection intensity (I) information, it is possible to extract color information of each point. This scanner has such features, so each point in the cloud is provided with X,Y,Z,I,R,G,B information, but ...
    ... slopes. Their principal finding is that smoothening of the point- cloud allows earlier detection of unstable blocks in comparison to raw cloud information. De Vilder et al. [5] focused on scar/rock bridges analysis, therein combining TLS with high- definition photographs, suggesting that freshly ...
    ... together with horizontal and vertical angle per each position. It can also detect reflectivity of the target point, as potentially valuable information in rock slope analysis (surface rock type, weathering degree water content might be correlated). These angular and distance measurements allow ...

  • The Dictionary of the Serbian Academy: from the Text to the Lexical Database

    Ranka Stanković, Rada Stijović, Duško Vitas, Cvetana Krstev, Olga Sabo (2018)
    In this paper we discuss the project of digitization of the Dictionary of the Serbo-Croatian Standard and Vernacular Language. Scanning and character recognition were a particular challenge, since various non-standard character set encoding was used in the course of the almost 60-year long production of the dictionary. The first aim of the project was to formalize the micro-structure of the dictionary articles in order to parse the digitized text of and transform it into structured data stored in relational lexical database. This approach ...
    computer lexicography, lexical database, language resources, dictionary, Serbian language
    ... introduce specific information. Conventions and triggers were used to identify basic information presented in the dictionary. This analysis enabled us to recognize the following entry structure: 2 For instance, Ahačić (2015) presents a Slovenian Dictionary Portal that collects information from 22 dictionaries ...
    ... morphology, such as Serbian, information about inflection is very im- portant. In our model we used the class Forms to store the information related to the inflected forms, while the grammatical categories are assigned to the LexProperties. At this moment, only information found in the DSA is stored ...
    ... dictionary article segmentation. The information that was registered in the dictionary explicitly, such as the domain, the stylistic use, the etymology, and so on, was mapped with the help of the data categories and their values; howev- er, some grammatical information was not explicitly encoded. For example ...

  • A Model for Determining the Dependability of Continuous Subsystems in Coal Mines Using the Fuzzy Logic Approach

    Nikola Stanić, Miljan Gomilanović, Petar Marković, Daniel Krzanović, Aleksandar Doderović, Saša Stepanović (2024)
    This study presents a unique model for assessing the dependability of continuous parts of combined systems in open-pit mining through the application of fuzzy logic. Continuous sub-systems as part of the combined system of coal exploitation in surface mines have the basic function of ensuring safe operation, high capacity with high reliability, and low costs. These subsystems are usually part of the thermal power plant’s coal supply system and ensure stable fuel supply. The model integrates various independent partial ...
    fuzzy logic, max-min composition, continuous part of combined system (CCS), open pit, mining, dependability