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Упит dcterms_creator_txt:Sachsenhofer R.

597 items

  • Two approaches to compilation of bilingual multi-word terminology lists from lexical resources

    Branislava Šandrih, Cvetana Krstev, Ranka Stanković (2020)
    In this paper, we present two approaches and the implemented system for bilingual terminology extraction that rely on an aligned bilingual domain corpus, a terminology extractor for a target language, and a tool for chunk alignment. The two approaches differ in the way terminology for the source language is obtained: the first relies on an existing domain terminology lexicon, while the second one uses a term extraction tool. For both approaches, four experiments were performed with two parameters being ...
    Linguistics and Language,Software,Artificial Intelligence,Language and Linguistics

  • Photocatalytic Activity of the V2O5 Catalyst toward Selected Pharmaceuticals and Their Mixture: Influence of the Molecular Structure on the Efficiency of the Process

    Sanja J. Armaković, Aleksandra Jovanoski Kostić, Andrijana Bilić, Maria M. Savanović, Nataša Tomić, Aleksandar Kremenović, Maja Šćepanović, Mirjana Grujić-Brojčin, Jovana Ćirković, Stevan Armaković (2023)
    Due to the inability of conventional wastewater treatment procedures to remove organic pharmaceutical pollutants, active pharmaceutical components remain in wastewater and even reach tap water. In terms of pharmaceutical pollutants, the scientific community focuses on -blockers due to their extensive (over)usage and moderately high solubility. In this study, the photocatalytic activity of V2O5 was investigated through the degradation of nadolol (NAD), pindolol (PIN), metoprolol (MET), and their mixture under ultraviolet (UV) irradiation in water. For the preparation of V2O5, facile ...
    DFT analysis, metoprolol, nadolol, nanomaterial characterization, photocatalysis, pindolol, β-blocker
    ... were calculated as F(R) = (1 — R)Ž/2R, where R is the diffuse reflectance of the Molecules 2023, 28, 655 6of18 'V»Os sample. Taking into account that F(R) is proportional to the absorption coefficient , the Tauc plot [35] was obtained by using the following equation: (hv F(R))!" = A(hv — E,) ...
    ... [33]. R a m a n in te ns it y 100 200 300 400 500 600 700 800 900 1000 1100 1200 Raman shift (cm) Figure 5. Experimental Raman spectrum of V»Os catalyst (after a baseline correction). 2.4. UV-Vis In order to estimate the energy bandgap of V>»Os powder, Kubelka-Munk functions F(R) [34] were ...
    ... — j E,„= 2.24 eV (direct) 0.000 MOEA LN KLLUNLLLL 10 15 20 25 30 35 40 45 50 55 Pv{(eV) Figure 6. Transformed Kubelka-Munk functions (F(R) hv)Ž and (F(R) hv)1/? assuming,direct and indirect energy bandgap in the V»Os sample, respectively. It should be noted that different V)»Os structures may ...

  • Curcumin nanonization using an alternative small-scale production unit: selection of proper stabilizer applying basic physicochemical consideration and biological activity assessment of nanocrystals

    Ines Nikolić, Jelena Antić-Stanković, Dragana Božić, Danijela Ranđelović, Bojan Marković, Dominique Jasmin Lunter, Aleksandar Kremenović, Miroslav Savić, Snežana Savić (2020)
    As the number of poorly soluble drugs is increasing, nanocrystals have become very interesting due to wide range of application possibilities. Curcumin was used as a model active ingredient in this work. Even though it has many proven positive effects, due to its physicochemical issues, its possibilities have not been fully exploited. The goal of this work was to select optimal conditions for a top-down method for curcumin nanosuspension production, and to perform their comprehensive characterization applying complementary methodologies: ...
    nanocrystal, curcumin, top-down method, wetball milling

  • Timok Scientific Tornado- TNT - a model for science popularization and the development of competencies through cooperation with the stakeholders

    Ranđelović Dragan, Randjelović Nataša, Ranđelović Dragana (2017)

  • Mapping and classifying large deformation from digital imagery: application to analogue models of lithosphere deformation

    Taco Broerse, Nemanja Krstekanić, Cor Kasbergen, Ernst Willingshofer (2021)
    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
    ... two orthogonal stretches with different magnitude, but the same sign. 3 A P P L I C AT I O N : S T R A I N T Y P E F O R RO TAT I N G E L E M E N T S U N D E R D I F F E R E N T T Y P E S O F D E F O R M AT I O N As a first test, we apply our strain type classification to individual square elements ...
    ... chosen sufficiently small. A P P E N D I X B : P O L A R D E C O M P O S I T I O N O F T H E D E F O R M AT I O N G R A D I E N T I N 2 D Analytic solutions exist for the decomposition of the deformation gradient F into the rotation tensor R and the right stretch tensor U as well as the left stretch ...
    ... symmetric tensors, the rotation angle of R is non-zero for simple shear contributions. oriented along X or Y, but rather to the material that is oriented along X or Y after the rotation by R (Fig. 4). The same arguments hold for U, where the rotation by R follows after the deformation under U. From ...

  • Optimizacija i planiranje površinskih kopova stohastičkim modelima

    Dejan R. Stevanović (2015-05-29)
    Savremeno rudarstvo izloženo je stalnom trendu pogoršanja uslova poslovanja.Mogućnost ostvarenja ekonomskih i drugih ciljeva rudarskog projektakompromitovana je stalnim pogoršanjem kvaliteta ležišta na kojima se vršieksploatacija, kao i značajnoj dozi neizvesnosti povezane sa geološkim,ekonomskim i tehničkim parametrima proizvodnje. U ovako kompleksnimuslovima poslovanja, matematički modeli sposobni da odgovore značajnimizazovima, odnosno ponude optimalna rešenja kojima se garantuje maksimalnoispunjenje projektovanih ciljeva, nameću se kao neophodnost.Trenutni, konvencionalni pristup optimizaciji i planiranju površinskih kopovazasniva se na algoritmima, razvijenim sredinom prošlog veka čije je opšteobeležje deterministički ...
    površinski kop, planiranje, optimizacija, stohastički modeli, kontrola kvaliteta uglja, neizvesnost.
    ... j j j j j r r r r r j r r j j j j j r r j r 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 j 1 j 1 r j r r r r j j j j r r j r j j j j j j r r j j j j 1 j 1 1 1 j 1 1 j 1 1 1 1 r j r r r r j j j r r r r r r r r j r j j j j j j r r r r r j r r r 1 j j j r j j 1 1 j j j j j j r j j r r j r r r j r r r j j j j j ...
    ... j j r j r r j j j j j j r j r r r j j j r r j r j r j j r j j r r r r r r r j j r j 0 0 3 2 2 2 3 3 3 3 3 2 3 2 2 2 1 1 1 1 1 1 2 1 1 1 2 1 2 1 1 1 1 1 1 1 1 1 1 1 0 4 0 0 0 0 0 3 2 3 3 3 3 3 4 3 3 3 2 2 2 1 1 1 1 2 4 4 1 5 2 2 2 2 2 1 1 1 1 1 1 5 1 0 0 0 0 0 0 0 0 0 3 3 3 3 3 4 4 4 3 3 3 2 2 2 1 ...
    ... 1 1 r j r r j j j j j 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 j j j r r j j j j j j j j 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 j r r j j j j j j j j j j j r r 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 j 1 r j j j r r r j r j j j j j j r j r 1 1 1 ...

  • Optimizacija i planiranje površinskih kopova stohastičkim modelima

    Dejan R. Stevanović (2015-05-29)
    Savremeno rudarstvo izloženo je stalnom trendu pogoršanja uslova poslovanja.Mogućnost ostvarenja ekonomskih i drugih ciljeva rudarskog projektakompromitovana je stalnim pogoršanjem kvaliteta ležišta na kojima se vršieksploatacija, kao i značajnoj dozi neizvesnosti povezane sa geološkim,ekonomskim i tehničkim parametrima proizvodnje. U ovako kompleksnimuslovima poslovanja, matematički modeli sposobni da odgovore značajnimizazovima, odnosno ponude optimalna rešenja kojima se garantuje maksimalnoispunjenje projektovanih ciljeva, nameću se kao neophodnost.Trenutni, konvencionalni pristup optimizaciji i planiranju površinskih kopovazasniva se na algoritmima, razvijenim sredinom prošlog veka čije je opšteobeležje deterministički ...
    površinski kop, planiranje, optimizacija, stohastički modeli, kontrola kvaliteta uglja, neizvesnost.
    ... j j j j j r r r r r j r r j j j j j r r j r 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 j 1 j 1 r j r r r r j j j j r r j r j j j j j j r r j j j j 1 j 1 1 1 j 1 1 j 1 1 1 1 r j r r r r j j j r r r r r r r r j r j j j j j j r r r r r j r r r 1 j j j r j j 1 1 j j j j j j r j j r r j r r r j r r r j j j j j ...
    ... j j r j r r j j j j j j r j r r r j j j r r j r j r j j r j j r r r r r r r j j r j 0 0 3 2 2 2 3 3 3 3 3 2 3 2 2 2 1 1 1 1 1 1 2 1 1 1 2 1 2 1 1 1 1 1 1 1 1 1 1 1 0 4 0 0 0 0 0 3 2 3 3 3 3 3 4 3 3 3 2 2 2 1 1 1 1 2 4 4 1 5 2 2 2 2 2 1 1 1 1 1 1 5 1 0 0 0 0 0 0 0 0 0 3 3 3 3 3 4 4 4 3 3 3 2 2 2 1 ...
    ... 1 1 r j r r j j j j j 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 j j j r r j j j j j j j j 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 j r r j j j j j j j j j j j r r 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 j 1 r j j j r r r j r j j j j j j r j r 1 1 1 ...

  • 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)
    General Earth and Planetary Sciences

  • Integrated Stratigraphy of the Middle–Upper Jurassic of the Krížna Nappe, Tatra Mountains

    Renata Jach, Nevenka Đerić, Špela Goričan, Daniela Reháková (2014)
    carbon and oxygen isotopes, radiolarians, calcareous dinoflagellates, radiolarites, Krížna Nappe, West ern Carpathians, Tethys
    ... #*4 Š SoCcZC r Š ž e„dOOgEeS3eVe0OS>ZSGS - S Š sožO2SSSS9PPoŠPZ2SzZ MB ~ R sBoO9vWSgS2ESP2S528 B S * PĐeSSSOS9ŠaŠSSKSSNSORS < Ž -3 -j Š ~ . |-} sST%a8A š o š SBŠS5ROSS52aa32EĆ 3 d a ad30d0Š ŠREMŠŠIS Ć a “ G TZ OW,KOME T O R a de 17 : • d„ . 1. OoecWoqsdo KM O O GcwWozww -i Goqwo s r UAZ95 – wo ...
    ... 42: 341—360. Mišik, M., Sykora, M., Ožvoldova, L. & Aubrecht, R., 1994. Horna Lys4 (Vršatec) – a new variety of the Kysuca Succes- sion in the Pieniny Klippen Belt. Mineralia Slovaca, 26: 7—19. Mock, R., Sykora, M., Aubrecht, R., Ožvoldova, L., Kronome, B., Reichwalder, P. & Jablonsky, J. ...
    ... Geologica Polonica, 123: 7-131. Myczyhski, R. & Jach, R., 2009. Cephalopod fauna and stratigra- phy of the Adnet type red deposits of the Križna unit in the Western Tatra Mountains, Poland. 4nna/es Societatis Geolo- gorum Poloniae, 79: 27–39. Myczynski, R. & Lefeld, J., 2003. Toarcian ammonites ...

  • 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
    ... Serbo-Croatian] Stanković, R., Krstev, C., Lazić, B., Škorić, M. (2018) Electronic Dictionaries – from File System to lemon Based Lexical Database, In 6th Workshop on Linked Data in Linguistic (LDL-2018), Towards Linguistic Data Science (in print) Stijović, R., Sabo, O., Stanković, R. (2017). Rečnik SANU ...
    ... [геолошке] се даље дијеле на епохе. Тако се терцијар [састоји] од пет: палеоцена, еоцена, олигоцена, миоцена и плиоцена (Д П 1, 17). (Калм. Р. 1, 81; Р. МС). н -а грч. прва, најстарија епоха палеогена. Формације [геолошке] се даље дијеле на епохе. Тако се терцијар [састоји] од пет: ...
    ... еоцена, олигоцена, миоцена и плиоцена Д П 1, 17 грч. прва, најстарија епоха палеогена плиоцена н -ена м palaiós kainós геол. Калм. Р. 1, 81; Р. МС Figure 2: An example of the automatic dictionary article segmentation. The information that was registered in the dictionary explicitly, such ...

  • The Newton method for solving nonlinear equations based on aggregation operators

    Nebojša M. Ralević, Dejan Ćebić (2019)

  • Primjena magnetometrijskih ispitivanja na arheološkom lokalitetu Nedeljkova humka

    Mirko Petković, Vesna Cvetkov, Milorad Ignjatović, Dejan Naumov (2020)
    ... način nošenja instrumenta naziva se još i „cik-cak“ način akvizicije. 27 A k t u e l n a i n t e rd i s c p l i n a r n a i s t ra ž i v a n j a t e h n o l o g i j e u a r h e o l o g i j i j u g o i s t o č n e E v ro p e Drugi način akvizicije, paralelni način, od gore opisanog razlikuje ...
    ... iznosilo je 0,5 [m]. Na oba terena, ukupno je izmje- reno 11689 vrijednosti vertikalnog gra- dijenta geomagnetskog polja. 28 C u r re n t i n t e rd i s c i p l i n a r y s t u d i e s i n t e c h n o l o g y i n t h e a rc h a e o l o g y o f t h e s o u t h - e a s t E u ro p e Magnet ...
    ... anomalija izazvana tim tijelom može se računati po formuli: gdje su: Δk – razlika magnetske susceptibilnosti tijela i okoline, V – zapremina tijela, r – rastojanje između tijela i instrumen- ta i T n – intenzitet normalnog Zemljinog magnetskog polja. Anomalije detektovane gradio- metrom uglavnom ...

  • 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
    ... 9 /4 U p p e r C a m p a n ia n -L o w e r M a a st ri c h ti a n 2 S tr u g an ik lo w er q u ar ry 4 2 6 3 – 2 7 2 4 4 � 1 1 0 2 5 00 2 0 � 0 6 0 1 7 00 L im es to n es g re y is h 1 0 /1 0 2 2 2 .2 2 4 9 .7 6 0 6 .3 2 0 9 .3 2 4 9 .1 6 0 6 .3 3 0 9 /1 1 U p p e r C a m p a n ia ...
    ... 2 2 9 4 .4 5 .6 V ar ia b le U p p e r C a m p a n ia n 7 T o li ć q u ar ry 4 0 1 5 – 0 2 2 4 4 � 1 3 0 1 4 00 2 0 � 2 8 0 4 3 00 L im es to n e R ed 8 /8 3 5 9 .9 * 5 8 .0 * 2 7 1 3 .4 3 5 0 .1 4 6 .2 2 7 1 3 .4 3 2 2 /1 4 U p p e r C a m p a n ia n 8 L ip o v ic a q u ar ry ...
    ... m ag n et ic fi el d o n th e sa m p li n g ar ea . M ag n et ic re ad in g s fo r th e fi el d o ri en ta ti o n o f th e co re s w er e co rr ec te d u si n g IG R F -1 2 In te rn at io n al G eo m ag n et ic R ef er en ce F ie ld m o d el (T h éb au lt et al . 2 0 1 5 ). T h e ag e d et ...

  • Keyword Extraction from Parallel Abstracts of Scientific Publications

    Slobodan Beliga, Olivera Kitanović, Ranka Stanković, Sanda Martinčić-Ipšić (2017)
    ... abstracts in scientific articles expressed in terms of R, P and an F1 score for all keywords defined by an author (in the left part) and for keywords without out-of-vocabulary (OOV) words (in the right part). All keywords Without OOV R [%] P [%] F1 [%] R [%] P [%] F1 [%] Serbian 54.32 45.96 45.71 63.38 ...
    ... keywords annotated using the algorithm divided by the number of keywords annotated by a human: R = A ∩ B A . (2) The F1 score is the harmonic mean of precision and recall, calculated as: F1 = 2PR P + R . (3) 3 Textual Resources In this experiment, we have used abstracts from the scientific journal ...
    ... keywords is available, the evaluation of the keyword extraction is performed as in the standard information retrieval tasks. Hence, precision (P ), recall (R) and the F1 score are used for the evaluation. When comparing the performance of an automatic method (algorithm) with a human annotation, precision is ...

  • Arsenic in Tap Water of Serbia´s South Pannonian Basin and Arsenic Risk Assessment

    Petar Papić, Marina Ćuk, Maja Todorović, Jana Stojković, Bojan Hajdin, Nebojša Atanacković, Dušan Polomčić (2012)
    kvalitet podzemnih voda, arsen, analiza rizika, Panonski Basen
    ... water supply. The minimum As water gave HQ and R values of 0.29 and 0.13 per 1,000 persons, respectively, and the maximum As water resulted in HQ and R of 5.72 and 2.6 per 1,000 persons. In Eastern Croatia the cancer risk is higher than in Serbia, and indices (R) ranged from 7.46 per 1,000 persons to 1.98 ...
    ... [40]. Interestingly, the highest maximum HQ and R values observed in Serbia are similar to those observed in Kandal Province, Cambodia. The minimum As water gave HQ and R values of 0.14 and 0.6 per 1,000 persons, and the maximum As water resulted in HQ and R of 8.8 and 3.9 per 1,000 persons [41]. Conclusions ...
    ... indicates the existence of toxic risk. Futhermore, in the study area the minimum As water gave HQ and R values of 0.29 and 0.13 per 1,000 persons, respectively, and the maximum As water resulted in HQ and R of 5.72 and 2.6 per 1,000 persons, and this should indicate the importance of developing a regional ...

  • The different approaches in seismic stratigraphy interpretation

    Dejan Radivojević (2018)
    U tekstu su prikazana dva osnovna pristupa u seizmostratigrafskoj interpretaciji. Prvi kao polaznu osnovu ima seizmičke sekcije, čija se interpretacija u kasnijoj fazi koreliše sa bušotinskim podacima. Drugi u prvoj fazi analizira podatke dobijene dubokim bušenjem koji se kasnije korelišu sa seizmičkim sekcijama. Prikazan je hronološki redosled i objašnjen postupak pri seizmostratigrafskoj interpretaciji oba pristupa. Ovakav način interpretacije omogućio je naftnim kompanijama detaljnije i preciznije sagledavanje geoloških odnosa, smanjenje rizika istraživanja i racionalnije projektovanje razradnih bušotina.
    seizmostratigrafija, istraživanje nafte i gasa, karakteristične seizmičke sekvence, seiz-mofacijalna analiza
    ... Elsevier, pp 375, Amsterdam, 2007. [2] Emery D. & Myers K. J, Sequence Stratigraphy, Bla- ckwell Science, pp 297, Oxford, 2001. [3] Mitchum R. M. Jr. & Vail P. R, Seismic stratigraphy nad global changes of sea level, part 7: stratigraphic interpretation of seismic reflection patterns in depositional ...
    ... Payton (Eds.), Seismic Stratigraphy: Application to Hydrocarbon Explo- ration, AAPG-Mem., 26, p 135-144. Tulsa, Oklaho- ma, 1977. [4] Mitchum R. M, Vail P. R. & Thompson S, Seismic stratigraphic and global changes in sealevel, part 2: The depositional seqence as a basic unit for strai- graphic analysis ...
    ... ton (Eds.), Seismic Stratigraphy: Application to Hy- drocarbon Exploration, AAPG-Mem., 26, p 165-184. Tulsa, Oklahoma, 1977. [10] Vail P. R, Mitchum, R. M. and Thomson, S. III, Seismic stratigraphy and global changes in sea level, part 3: relative changes of sea level from coastal onlap. In: ...

  • English for Geology Students. 1

    Lidija Beko (2023)
    Engleski jezik
    ... ........a.. 148 • Unit6• WEATHERING, EROSION AND SEDIMENTARY ROCKS Partl WEATHERING..........ttt ttt 152 Mocabulary.7.09...y. ..0A P J R ). .RkM . R .. RMM . da 155 Reading Comprehension...........te. 157 Part2 EROSION........ee a a Č 0 158 Wocabulary„...g f. O a.y- ·M-fya . Bc o e . uh ...
    ... e 164 Mocabulary/:f. a . . K. L. LD.JOO y. OR dd R- tt . wwR o 166 Reading Comprehension...........i.. 167 (Grammar Sporeyi:20. 7 . .ČR L . val ı ı . Mg (evaii6e oOM caL , , 58500 168 JExerGcises-. .NA . JNA NrT. . .7. TON A . .. . . . . . . R. aJEO.. 169 Geological Wonders ... . 170 Profession ...
    ... ı 95 Geology through Myths............i.i a 97 • Unit4• CONTINENTAL DRIFT WEGENER'S HYPOTHESIS ...........tttoe 100 Mocabulary. .rA .. dk r dj. - . d. o - -j= -- - - OJ 102 Reading Comprehension........ ....i.. 103 'TREGTONIG PLATESL.L OEOA K . O OR . JČOA OMNJ-K. . - .POO I 104 Vocabulary ...

  • A Model for Determining Fuzzy Evaluations of Partial Indicators of Availability for High-Capacity Continuous Systems at Coal Open Pits Using a Neuro-Fuzzy Inference System

    Miljan Gomilanović, Miloš Tanasijević, Saša Stepanović, Filip Miletić (2023)
    This paper presents a model for determining fuzzy evaluations of partial indicators of the availability of continuous systems at coal open pits using a neuro-fuzzy inference system. The system itself is a combination of fuzzy logic and artificial neural networks. The system availability is divided into partial indicators. By combining the fuzzy logic and artificial neural networks, a model is obtained that has the ability to learn and uses expert judgment for that learning. This paper deals with the ...
    системи, континуални системи експлоатације (роторни багер-транспортер-дробилично постројење), рударство, расположивост, меко рачунарство, фази логика, ANN, ANFIS

  • Gate Road Support Deformation Forecasting Based on Multivariate Singular Spectrum Analysis and Fuzzy Time Series

    Luka Crnogorac, Rade Tokalić, Zoran Gligorić, Aleksandar Milutinović, Suzana Lutovac, Aleksandar Ganić (2021)
    Underground mining engineers and planners in our country are faced with extremely difficult working conditions and a continuous shortage of money. Production disruptions are frequent and can sometimes last more than a week. During this time, gate road support is additionally exposed to rock stress and the result is its progressive deformation and the loss of functionality of gate roads. In such an environment, it is necessary to develop a low-cost methodology to maintain a gate road support system. ...
    deformacije podgrade, lasersko skeniranje, višekanalna singularna spektralna analiza, prognoza, klasterisanje fuzzy vremenskih serija
    ... as follows: W =  π (1) 1 π (1) 2 · · · π (1) r π (2) 1 π (2) 2 · · · π (2) r ... ... . . . ... π (M) 1 π (M) 2 · · · π (M) r , (11) Energies 2021, 14, 3710 6 of 20 use two groups of indices, I; = {1,...,r} and Ib = {r+1,...,Lsum} and associate the group I, with the signal ...
    ... simple case where we have only signal and noise components, we Energies 2021, 14, 3710 6 of 20 use two groups of indices, I1 = {1, . . . , r} and I2 = {r + 1, . . . , Lsum} and associate the group I1 with the signal component and the group I2 with the noise. The purpose of diagonal averaging is ...
    ... recurrent procedure (VMSSA-R). Let us have M-channel series X(i) Ni = ( x(i)1 , . . . , x(i)Ni ) and corresponding window length Li, 1
  • R forecasting algorithm ...

  • Novi model za postizanje optimalne proizvodnje na naftnom polju Amal

    Elnori Elmabrouk Ali Elhaddad (2015-04-16)
    Doktorskom disertacijom analizirani su i proučavani problemi proizvodnje nafte iprimenjene metode za njihovo rešavanje na naftnom polju Amal. Ukratko jeprikazana proizvodnje nafte u Libiji, njene karakteristike i rezerve, da bi se videoznačaj ovog naftnog polja.Utvrđeno je da su na naftnom polju Amal ključni problemi koji prate procesproizvodnje taloženje parafina, pojava slojnog peska, neefikasan rad gasliftsistema, neefikasna desalinizacija nafte i ekološki problemi. Proizvodniproblemi, pojedinačno i više njih zajedno, na nekim bušotinama uzrokovali susmanjenje proizvodnje nafte od 40 do 75%. Zbog ...
    nafta, proizvodnja, optimizacija, Amal, Libija
    ... rezervoara R-1, R-2 i R-3 pumpati u taložni rezervoar R-4, zapremine 1000 m3, u kome će se obavljati dodatni proces gravitaciono sedimentacionog razdvajanja, ali sa mnogo manjom količinom prisutne nafte obzirom da je većina nafte prethodno izdvojena u tehnoloških rezervoara R-1, R-2 i R-3. Slojna ...
    ... hidrofobnom filtracijom i gravitacionom sedimentacijom. 55 R -1 R -2 R -3 R -4 P um pe z a ut is ki va nj e sl oj ne B uš ot ine za u tis ki va nj e sl oj ne v od e R T H F T al ož ni r ez er vo ar i Na fta ka sk lad išn im re ze rv oa rim a i ...
    ... pripreme slojne vode za odlaganje. Nafta koja je ostala u slojnoj vodi nakon procesa separacije izdvajaće se iz nje u tehnološkim rezervoarima R-1, R-2, i R-3. Rezervoari su vertikalni, zapremine po 500 m3. Zbog nepovoljnih reoloških karakteristika (sadržaja parafina i visoke tačka stinjavanja), nafta ...