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Упит dcterms_subject_txt:geoelectrical method

512 items

  • Ефикасност дистрибуције и коришћења природног гаса у домаћинствима

    Dejan Brkić (2010-03-30)
    Природни гас ће се у будућности све више користити као енергент за подмиривање грејних потреба становништва у српским градовима. Стога је потребно изнаћи најповољнији начин употребе природног гаса. Природни гас се може користити за подмирење грејних потреба становништва на два дијаметрално супростављена начина, и то директно, тако што би се гас директно уводио у зграде путем дистрибутивног система за снабдевање гасом и затим сагоревао у гасном котлу којим је сваки стан опремљен (гасни дистрибутивни систем), или индиректно, тако што ...
    prirоdni gаs, distribuciја gаsа,grејаnjе, cеvоvоdi, cеvоvоdnе mrеžе,fаktоr trеnjа pri prоtоku fluidа,urbаnizаm
    ... s. Hardy Cross  developed a numerical method for calculating flow and pressure distribution  in a  looped network. This  method also has been widely used  in modeling of waterworks with  ring‐like  structures of  conduits  in  municipalities. Hardy Cross method assumes equilibrium between pressure a ...
    ... Hardy  Cross  method  is one approach  to  solve  the  loop equations. Original method  first determines  corrections  for  each  loop  independently  and  applies  this  correction  to  compute  new  flow  in  each  conduit.  It  is  not  efficient  compared  to  improved  Hardy  Cross  method  that  considers  ...
    ... Simultaneous  method  is  used  by  Epp  and  Fowler,  but  only  for  looped  waterworks  systems.  Some  methods developed by Russian authors are similar with original Hardy Cross method. Contemporary with  Hardy Cross, soviet author V.G. Lobachev was being developed very similar method compared to original  ...

  • Development Of The Serbian Geological Resources Portal

    Ranka Stanković, Jelena Prodanović, Olivera Kitanović, Velizar Nikolić (2011)
    ... entered, the method on the server sums up the number of appear- ances of the word “gold” in the abovementioned fields in relation to the given factor. Ranking of the results is carried out in descending order according to the field containing the total sum of factors. The search method described here ...

  • Post Early Miocenevertical-axis clockwise rotation in the West Vardar Zone of Serbia

    Vesna Lesić, Emo Marton, Vesna Cvetkov, Dragana Jovanović (2018)
    ... alternating field demagnetization of pilot specimens. According to the behavior of the pilot specimens during demagnetization it was chosen which method was used to demagnetize the rest of the specimens from each locality/site. Magnetic mineralogy experiments were carried out on selected specimens ...

  • Simple 2D Gravity-density inversion for modeling of the sedimentary basin basement

    Ivana Vasiljević, Snežana Ignjatović, Dragana Đurić, (2019)

  • Rule-based Automatic Multi-word Term Extraction and Lemmatization

    Ranka Stanković, Cvetana Krstev, Ivan Obradović, Biljana Lazić, Aleksandra Trtovac (2016)
    In this paper we present a rule-based method for multi-word term extraction that relies on extensive lexical resources in the form of electronic dictionaries and finite-state transducers for modelling various syntactic structures of multi-word terms. The same technology is used for lemmatization of extracted multi-word terms, which is unavoidable for highly inflected languages in order to pass extracted data to evaluators and subsequently to terminological e-dictionaries and databases. The approach is illustrated on a corpus of Serbian texts from ...
    term extraction, terminology, multi-word units, lemmatization, finite-state transducers
    ... bg.ac.rs, ivan.obradovic@rgf.bg.ac.rs, biljana.lazic@rgf.bg.ac.rs, aleksandra@unilib.bg.ac.rs Abstract In this paper we present a rule-based method for multi-word term extraction that relies on extensive lexical resources in the form of electronic dictionaries and finite-state transducers for ...
    ... Linguistics, 19(1), pp.61--74. Frantzi, K., Ananiadou, S., and Mima, H. (2000). Automatic recognition of multi-word terms:.the C-value/NC-value method. International Journal on Digital Libraries, 3(2), pp. 115-130. 513 Gelbukh, A., Sidorov, G., Lavin-Villa, E., and Chanona-Hernandez ...

  • Hydrogeochemical distribution of Ca and Mg in groundwater in Serbia

    Petar Papić, Jovana Milosavljević, Marina Ćuk, Rastko Petrović (2014)

  • Environmental Energy Security Indicators as Tools for Environmental Protection

    Aleksandar Madžarević, Dejan Ivezić, Marija Živković , Miloš Tansijević (2019)
    Еколошка прихватљивост је постала незаменљив синтезни показатељ сваке валидне енергетске анализе у последње две-три деценије. Енергетска безбедност је у директној хармонији с еколошком прихватљивошћу кроз многе прописане политичке циљеве, економске користи, правне тековине итд. Индикатори еколошке сигурности представљају један од основних елемената за одређивање енергетске безбедности и снажне алате за усмеравање енергетског сектора ка одрживом развоју. У овом раду, анализа је била концентрисана на показатеље енергетске безбедности у области животне средине који се односе на сектор природног гаса у ...
    енергетска безбедност, еколошки енергетски индикатори, заштита животне средине, еколошка прихватљивост
    ... called ranking, is done. It can be performed by several different methods. Ranking based on the application of the AHP (Analytic Hierarchy Process) method was used for the purposes of developing this synthesis model. In this way, ranking data is used as input to the fuzzy set, which is further analyzed ...
    ... Variables Proposition of fuzzy set Integral analisis Fuzzy composition Questioners; Monitoring; Statistical work Best-fit method RANKING Input data AHP Figure 1. Schematic diagram of a model for environmental energy security assessment The output of the fuzzy set is ...
    ... decision-making, Renewable and Sustainable Energy Reviews, Volume 13 (9), 2009, pp. 2263-227 11. Konidari, P., Mavrakis D., A multi-criteria evaluation method for climate change mitigation policy instruments, Energy Policy, Volume 35, 2007, pp. 6235–6257 12. Scheraga, J., Leary, N., Improving the efficiency ...

  • Simulation of Hydrogeological Environmental Discharge in Case of Interruption Constant Observations

    Marina Čokorilo Ilić, Dragoljub Bajić, Miroslav Popović (2024)
    Monitoring Network, data, hydrogeological environment, tunnel, simulation

  • Classification of Terms on a Positive-Negative Feelings Polarity Scale Based on Emoticons

    Mihailo Škorić (2017)
    The goal of this paper is to draw attention to the possibility of using emoticon-riddled text on the web in language-neutral sentiment analysis. It introduces several innovations in the existing framework of research and tests their effectiveness. It also presents a software tool especially made for that purpose, explains how it builds a database with sentimental value of terms and offers the user manual. Finally, it presents a software tool that tests the new database and gives some examples ...
    data mining, information extraction, emotions, text on the web
    ... determiners are located. As the determiners are language-independent, the system would be language-independent as well. If it turns out to be valid, this method could allow machine learning the usage of huge corpus of texts that are pre-labeled with determiners. 1.1 Review of their former similar studies ...
    ... the first two aforementioned prerequisites were fulfilled. 2.2 Assigning values to the determiners The values of determiners were obtained by a method of survey which was conducted on the internet platform Google forms, which people were able to access through hyperlinks published on social networks ...
    ... several independent evaluators and based on their responses it can be concluded that the values are non-random and representative, hich implies that this method of terms classification is pos- sible for any natural language using determiners, but it is still necessary to carry out a systematic evaluation. ...

  • Multivarijabilni modeli upravljanja u rudarstvu

    Marjan M. Hudej (2014-02-03)
    osetljivost i rizik. Više pobuda generiše ovakvu atribuciju. Prva je, multivarijabilnostambijentalnih uslova i funkcionalna i strukturna složenost rudarskih sistema (čovek -priroda (radna sredina) - mašina – okruženje); Druga se odnosi na ne postojanje opštenaučne saglasnosti oko ocene pogodnosti modela za podršku odlučivanju i upravljanje.Treća, ako bi saglasnost i postojala, nije sigurno da bi raspoloživi modeli, metode i taktike,dale ekvivalentne rezultate za iste rudničke uslove. Četvrta, sistemske nauke još uveknemaju opšte prihvaćen i u praksi primenljiv algoritam izbora najboljeg rešenja ...
    rudarstvo, odlučivanje, upravljanje, model,multivarijabilno, multiatributno, multikriterijumsko
    ... decision model based on PROMETHEE method (Report), Journal of Academy of Business and Economics, International Academy of Business and Economics October, 2009. 2. Abedi, M., Torabi, S.A., Norouzi, G., Hamzeh, M., Elyasi, G., PROMETHEE II: a knowledge- driven method for copper exploration, Computers ...
    ... 1990, 244-256. 14. Beynon M., PROMETHEE Method of Ranking Alternatives, in: The Sage Dictionary of Quantitative Management Research, Luiz MOutinho & Graeme Hutcheson (eds.), SAGE Publications Ltd., 2011, 344. 15. Bitarafan M.R., Ataei M., Mining method selection by multiple criteria decision making ...
    ... projects: The PROMETHEE method, European Journal of Operational Research, Vol. 24, 1985, 228-238. 21. Brans J. P., Mareschal B., Promethee Methods, Multiple Criteria Decision Analysis: State of the Art Surveys, , Springer, 2005, 163-186. 22. Cancer V., The Multicriteria method for environmentally oriented ...

  • Multivarijabilni modeli upravljanja u rudarstvu

    Marjan M. Hudej (2014-02-03)
    osetljivost i rizik. Više pobuda generiše ovakvu atribuciju. Prva je, multivarijabilnostambijentalnih uslova i funkcionalna i strukturna složenost rudarskih sistema (čovek -priroda (radna sredina) - mašina – okruženje); Druga se odnosi na ne postojanje opštenaučne saglasnosti oko ocene pogodnosti modela za podršku odlučivanju i upravljanje.Treća, ako bi saglasnost i postojala, nije sigurno da bi raspoloživi modeli, metode i taktike,dale ekvivalentne rezultate za iste rudničke uslove. Četvrta, sistemske nauke još uveknemaju opšte prihvaćen i u praksi primenljiv algoritam izbora najboljeg rešenja ...
    rudarstvo, odlučivanje, upravljanje, model,multivarijabilno, multiatributno, multikriterijumsko
    ... decision model based on PROMETHEE method (Report), Journal of Academy of Business and Economics, International Academy of Business and Economics October, 2009. 2. Abedi, M., Torabi, S.A., Norouzi, G., Hamzeh, M., Elyasi, G., PROMETHEE II: a knowledge- driven method for copper exploration, Computers ...
    ... 1990, 244-256. 14. Beynon M., PROMETHEE Method of Ranking Alternatives, in: The Sage Dictionary of Quantitative Management Research, Luiz MOutinho & Graeme Hutcheson (eds.), SAGE Publications Ltd., 2011, 344. 15. Bitarafan M.R., Ataei M., Mining method selection by multiple criteria decision making ...
    ... projects: The PROMETHEE method, European Journal of Operational Research, Vol. 24, 1985, 228-238. 21. Brans J. P., Mareschal B., Promethee Methods, Multiple Criteria Decision Analysis: State of the Art Surveys, , Springer, 2005, 163-186. 22. Cancer V., The Multicriteria method for environmentally oriented ...

  • Structural dissymmetrization of optically anisotropic Grs64±1Adr36±1Sps2 grandite from Meka Presedla (Kopaonik Mt., Serbia)

    Pavle Tančić, Aleksandar Kremenović, Predrag Vulić (2019)
    In this paper, grandite core with Grs64±1Adr36±1Sps2composition was crystallographically studied. This core represents zone A of the macroscopically visiblefive A–E zones of the optically anisotropic Grs58–64 Adr36–42Sps2 grandite. The applied procedure includes the detailed analysis of the powder diffraction patterns, and the Rietveld refinements of the crystal structures in a series of 18 space groups and two mixtures, which were followed by the comparative analysis of the R-values, site occupancy factors, and the bond lengths and angles. Synthesis of all ...
    grandite, XRPD, crystal structure, structural dissymmetrization

  • Eksploatacioni učinci ugljenih sistema na površinskom kopu Tamnava–Zapadno polje

    Marko Lazić, Filip Miletić, Milena Lekić, Veljko Rupar, Željko Petrović, Lazar Žujović (2021)
    U radu su analizirani eksploatacioni učinci ugljenih sistema na površinskom kopu Tamnava–Zapadno polje. Period analize je prvih šest meseci tekuće godine. Analiza je vršena sa aspekta ostvarene proizvodnje, kvaliteta uglja, efektivnog vremena rada, kapacitetnog i vremenskog iskoršćenja i zastoja sistema. Za poređenje podataka različitih parametara koji po svojoj prirodi nisu međusobno uporedivi, u radu su korišćene metode višekriterijumskog odlučivanja.
    proizvodnja uglja, zastoji, metode višekriterijumskog odlučivanja
    ... mines equipment through MADM methods: Application of modified VIKOR method. Expert Systems with Applications, 38(3), 2550-2556;Systems with Applications, 121, 393-417; [9] Tsaur R–C.,,Decision risk analysis for an interval TOPSIS method” Applied Mathematics and Computation 218(8), pp. 4295–4304, 2011. ...

  • Analiza uporednog praćenja temperature površine ohlađenih materijala pri njihovom zagrevanju do ambijentalne temperature

    Stevan Đenadić, Ljubiša Tomić, Vesna Damnjanović, Katarina Nestorović (2021)
    U datom eksperimentalnom radu su termografskim metodama ispitivane termofizičke karakteristike različitih materijala. Za ispitivanja su izabrani mesingani niovčić, ugalj i pelet, jer imaju različita termoizolaciona svojstava i različito stanje površine. Uzorci su najpre hlađeni, a zatim je njihovo zagrevanje na sobnoj temperaturi praćeno termalnom kamerom. U drugom delu eksperimenta, korišćena je impulsna termografija, a zagrevanje površine uzoraka vršeno je svetlosnom pobudom.
    termografija, impulsna termografija, nedestruktivno testiranje materijala, mesing, ugalj, pelet

  • Application of stochastic models for mine planning and coal quality control

    Dejan Stevanović, Božo Kolonja, Ranka Stanković, Dinko Knežević, Mirjana Banković (2014)
    ... integration for calcula- tion of intersection area of arbitrary polygons when the polygons are too complex. We describe the Monte Carlo integration method we used. Let f be a function, and IV(f) the definite integral of that function: I f X X X f X X X fV a b a b n a b n n n ( ) ( , , , ) ( ...
    ... integration for calcula- tion of intersection area of arbitrary polygons when the polygons are too complex. We describe the Monte Carlo integration method we used. Let fbe a function, and /,,(/) the definite integral of that function: (7) hb, by — T(f)= JdX, dX)... JAN IM Kase XW =[PCOdx (8) a a a ...
    ... deposit from the first cut. The area to be mined over the life of the mine was divided into 28 strips, 200 m wide. The deposit used to illustrate the method- ology has 3 mineable coal seams, each with its own coal quality and own average thickness. To compose the sulfur grade value for mining blocks, ...

  • A hundred years of Milutin Milanković's climate change theory - geological implications

    Dejan Radivojević (2020)
    Миланковићева теорија циклуса објављена пре сто година је најважнија теорија у наукама које проучавају климу и имала је велики утицај на дисциплине које се баве Земљом. Ипак, његов рад је чекао више од педесет година да би добио потврду. Може се рећи да Миланковићев рад највећи утицај на геологију има у изради астрономске временске скале, подршци хипотези континенталног дрифта и палеоклиматологији. Добри резултати примене астрономске временске скале на неогене седименте иницирали су примену ове методе у мезозојским и у последње ...
    циклостратиграфија, астономска временска скала, геолошка временска скала, климатске промене, континентални дрифт
    ... implications. Positive results of the implementation of the astronomic time scale to the Neo- gene stratigraphy initiated the application of this method within the Mesozoic, and lately also to the Paleozoic sediments. Milanković’s manuscript of astro- nomical forcing of climate changes led to fruitful ...
    ... since the potential pitfalls and misinterpretation could be caused by hiatuses, bioturbation, reworked sediments, and erosion. The astronomical tuning method enhances tradi- tional geological dating methods and over the last decade has been successfully applied to a continuous high-resolution geological ...

  • Clockwise vertical-axis rotation in the West Vardar zone of Serbia: Tectonic implications

    Vesna Lesić, Emo Márton, Violeta Gajić, Dragana Jovanović, Vesna Cvetkov (2018)
    The Vardar-Tethyan mega-suture between the Eurasian and Adria (Gondwana) margins comprises remnants of oceanic lithosphere of Neotethys and distal parts of the adjacent continental margins including unconformable Late Cretaceous sedimentary cover and Cenozoic igneous rocks of post-obduction age. This study provides kinematic constraints for displacements and rotations affecting the Serbian part of the West Vardar and Jadar-Kopaonik units after the closure of the Neotethyan (= Sava) Ocean. The targets of the paleomagnetic research were Late Cretaceous sediments representing an ...
    Paleomagnetism, Clockwise rotation, Dinarides, West Vardar zone
    ... thermal (MMTD80, Magnetic Measurements, Aughton, and TSD- 1, Schonstedt Instrument Company, Reston) method. The remaining samples from the respective groups were demagnetized with the more efficient method, and in as Clockwise vertical-axis rotation in the West Vardar zone of Serbia: tectonic implications ...
    ... pluton volcanics of quartzlatite composition does occur. The I-type granodiorites were dated as Oligocene, the S-type granite as Miocene in age (U–Pb method, 30.6–31.7 Ma and 18.1–17.4 Ma, respectively, Schefer et al. 2011). The dacitoandesites were considered to be older than the granodiorite intrusions ...
    ... Brno). This was followed by anisotropy of magnetic susceptibility (AMS) measure- ments with KLY-2 or with MFK1-A kappabridges with Jelı́nek (1977) method. The computer programs used for measurements and evaluations were Aniso (Bodrás 1990) and ANISOFT 4.2 and 5.1 (Chadima and Jelı́nek 2008; Chadima ...

  • Application of geophysical and multispectral imagery data for predictive mapping of a complex geo-tectonic unit: a case study of the East Vardar Ophiolite Zone, North-Macedonia

    Filip Arnaut, Dragana Đurić, Uroš Đurić, Mileva Samardžić-Petrović, Igor Peshevski (2024)
    General Earth and Planetary Sciences
    ... a few occurrences of minerals, such as in the predictive mapping of porphyry Cu deposits (Carranza and Laborte 2015b). Fur- thermore, the RF method offers a notable advantage in the form of feature importance quantification. This quantifica- tion, as noted by Rodriguez-Galiano et al. (2014) ...
    ... random trees) must be set by the end user, making data prep- aration easier and saving time during data processing. Since it is a non-parametric method, the data is less dependent on regular statistical (grid) distribution. According to Breiman (2001), it is not susceptible to noise or overfitting ...
    ... models, including the RF algorithm. According to previous research (Breiman 2001; Catani et al. 2013; Harris and Grunsky 2015), the most effective method for determin- ing the optimal range of the number of trees (n”T) for an algorithm, is to run a certain (user-defined) number of model performance ...

  • WebGIS Cadastre of Abandoned Mines in Autonomous Province of Vojvodina

    Ranka Stanković, Nikola Vulović, Nikola Lilić, Ivan Obradović, Radule Tošović, Milica Pešić-Georgiadis (2015)
    ... Physical, Streets, Hybrid or Satellite, depending on user choice. Over the base map two layers are displayed: polygons singled with remote sensing method and polygons resulting from the analysis of exploitation authorizations, requests for recultivation and field visits. Figure 2 Main page of ...
    ... Google analytics. Statistics of mining facilities and results of remote sensing by property type, by district, municipality, by mineral resource or method of registration and the like are also available. A system for reporting problems in system operation and review of frequently asked questions ...

  • Flyrock induced by blasting in surface mining

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