Претрага
547 items
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The number of unimodular roots of some reciprocal polynomials
Dragan Stankov (2020)We introduce a sequence P2n of monic reciprocal polynomials with integer coefficients having the central coefficients fixed. We prove that the ratio between number of nonunimodular roots of P2n and its degree d has a limit when d tends to infinity. We present an algorithm for calculation the limit and a numerical method for its approximation. If P2n is the sum of a fixed number of monomials we determine the central coefficients such that the ratio has the minimal limit. ...Algebraic integer, the house of algebraic integer, maximal modulus, reciprocal polynomial, primitive polynomial, Schinzel-Zassenhaus conjecture, Mahler measure, method of least squares, cyclotomic polynomialsDragan Stankov. "The number of unimodular roots of some reciprocal polynomials" in Cmptes rendus mathematique (2020). https://doi.org/10.5802/crmath.28
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Грешка инклинације код депозиционе реманетне магнетизације
Mirko Petković, Vesna Cvetkov (2019)... anhisterezisne remanentne magnetizacije (Anisotropy of anhysteretic remanent magnetization – AARM). Anizotropije remanentne magnetizacije računa se po sličnom algoritmu kao i anizotropija magnetske susceptibilnosti, 𝐌𝑖 = 𝜒𝑖𝑗𝑅 𝐇𝑗, (3) gdje je 𝜒𝑖𝑗𝑅 - koeficijent anizotropije RM. ...Mirko Petković, Vesna Cvetkov. "Грешка инклинације код депозиционе реманетне магнетизације" in II Когрес геолога Босне и Херцеговине са међународним учешћем , Удружење геолога у Босни и Херцеговини (2019)
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Fuzzy optimization in hydrodynamic analysis of groundwater control systems: Case study of the pumping station “Bezdan 1”, Serbia
Dragoljub Bajić, Dušan Polomčić (2014)A groundwater control system was designed to lower the water table and allow the pumping sta-tion “Bezdan 1” to be built. Based on a hydrodynamic analysis that suggested three alternative solutions, mul-ticriteria optimization was applied to select the best alternative. The fuzzy analytic hierarchy process methodwas used, based on triangular fuzzy numbers. An assessment of the various factors that influenced the selec-tion of the best alternative, as well as fuzzy optimization calculations, yielded the “weights” of the alternativesand the ...groundwater lowering, groundwater management scenario, fuzzy analytic hierarchy process,expert knowledge, triangular fuzzy numbers, linguistic variables... ниво под- земних вода, дефинисане су три варијанте (алтер- нативе) решења система одбране од подземних во- да и његове карактеристике којим се штити по- дручје будуће црпне станице „Бездан 1“ како би се она могла изградити. Коришћењем fuzzy оптимизације - методе fuzzy аналитичко хијерархијског процеса ...Dragoljub Bajić, Dušan Polomčić. "Fuzzy optimization in hydrodynamic analysis of groundwater control systems: Case study of the pumping station “Bezdan 1”, Serbia" in Geološki anali Balkanskoga poluostrva, Belgrade : University of Belgrade - Faculty of mining and geology (2014). https://doi.org/10.2298/GABP1475103B
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Permanent GNSS monitoring of landslide Umka
Mileva Samardžić Petrović, Jovan Popović, Uroš Đurić, Biljana Abolmasov, Marko Pejić, Miloš Marjanović (2020)Клизиште Умка је једно од највећих насељених активних клизишта у Србији. Активност клизишта Умка се прати већ више од 85 година, различитим геотехничким и геодетским техникама. Од 2010. године, активност kлизишта се континуирано прати у реалном времену аутоматизованим перманентним системом за праћење базираним на Глобалним навигационим сателитским системима (ГНСС). Поред тога, од 2018. године активност клизишта се додатно прати кинематичким ГНСС одређивањем положаја скупа карактеристичних тачака као и применом UAV фотограметрије. Главни циљ овог рада је приказ резултата опажања три ...... displacement was -30.1 cm. Displacement of characteristic landslide points from April 2018 to November 2018 and from April 2018 to April 2019 Po int April 2018 to November 2018 April 2018 to April 2019 ΔE [mm] ΔN [mm] D [mm] Δh [mm] ΔE [mm] ΔN [mm] D [mm] Δh [mm] 4 -46,3 -46,8 65 ...Mileva Samardžić Petrović, Jovan Popović, Uroš Đurić, Biljana Abolmasov, Marko Pejić, Miloš Marjanović. "Permanent GNSS monitoring of landslide Umka" in International Conference on Contemporary Theory and Practice in Construction XIV Stepgrad, University of Banja Luka, Faculty of Architecture, Civil Engineering and Geodesy (2020). https://doi.org/10.7251/STP2014091S
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Mine surveying works for the purpose of excavating the remaining reserves of bauxite in the deposit of “Podbracan”
... deviation of the set- ting out of the last point E420-10 within the horizontal plane is affected by the given dimensions: - Standard deviation of the po- sition of starting point in traverse - Standard deviation of the start- ing grid bearing ( σ v = ± 8ʺ); as well as the errors occurring during ...Aleksandar Milutinović, Aleksandar Ganić, Thamer Rayes Diyab, Rade Tokalić, Meri Ganić. "Mine surveying works for the purpose of excavating the remaining reserves of bauxite in the deposit of “Podbracan”" in Revista Escola de Minas, School of Mines Magazine, Sao paulo, Brasil : SciELO (2015)
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Advantages and Disadvantages of a Parallel and Zigzag Method of Acquisition in Walking Mode in Magnetometric Archeological Research
магнетометријска испитивања, цик-цак и паралелна аквизиција у ходајућем моду, линеарне аномалије, археологија... precesije, na čijim je fi zičkim osnovama zasnovan ovaj in- strument, orijentacija sonde u vanekvatorijalnim područjima ne bi trebalo da utiče na kvalitet po- dataka. Pri magnetometrijskim merenjima, hoda- jućim načinom uzorkovanja, uočena je pojava linijskih anomalija duž profi la. Da bi se došlo do adekvatnog ...Mirko Petković, Vesna Cvetkov, Branislav Sretenović. "Advantages and Disadvantages of a Parallel and Zigzag Method of Acquisition in Walking Mode in Magnetometric Archeological Research" in Arheologija i prirodne nauke (2014)
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Pleistocene rhinoceros from Bogovina Cave: the first report of Stephanorhinus hundsheimensis Toula, 1902 (Mammalia, Rhinocerotidae) from Serbia
Finds of Pleistocene rhinoceros are rare in Serbia, and only one species (the woolly rhinoceros Coelodonta antiquitatis Blumenbach, 1799) has been reported so far. The current paper presents the dental material of an extinct so-called Hundsheim rhinoceros, Stephanorhinus hundsheimensis Toula, 1902 from Bogovina Cave (East ern Serbia). Both the morphological and metric characteristics of the teeth are consis tent with the attribution to S. hundsheimensis. Unfortunately, the rhinoceros material originated from an uncertain geological context, so there is no ...... Nosorog Dicerorhinus etruscus brachycephalus iz Erevanskoy must’erskoy stoyanki, p. 103-110. In Baryshnikov, G.F. and Kuz’mina, I.E., (eds.), Materialy po Mamontovoy Faune Severnoy Evrazii. Trudy Zoologicheskogo Instituta Akademii Nauk SSSR 198. (In Russian with English summary) Belyaeva, E.I. and David ...
... (Cremona, Lombardia, Northern Italy): morphological analyses and taxonomical remarks - An opportunity for revising the three other skulls from the Po Valley. Quaternary Science Reviews, 109:28-37. https://doi.org/10.1016/j.quascirev.2014.11.022 Petrović, D. 1977. Morfologija i geneza Bogovinske pećine ...Predrag Radović, Miloš Radonjić, Emmanuel Billia. "Pleistocene rhinoceros from Bogovina Cave: the first report of Stephanorhinus hundsheimensis Toula, 1902 (Mammalia, Rhinocerotidae) from Serbia" in Palaeontologia Electronica, Coquina Press (2020). https://doi.org/10.26879/985
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Frequency and Length of Syllables in Serbian
Marija Radojičić, Biljana Lazić, Sebastijan Kaplar, Ranka Stanković, Ivan Obradović, Ján Mačutek, Lívia Leššová (2019)Basic analyses of several properties of syllables (the rank-frequency distribution, the distribution of length, and the relation between length and frequency) in Serbian is presented. The syllabification algorithm used combines the maximum onset principle and the sonority hierarchy. Results indicate that syllables behave similarly to words as far as mathematical models are concerned, but values of parameters in models for syllables are quite different from those for words.... distribution of syllables in Serbian rank frequency syllable 1 10103 o 2 6970 je 3 5778 u 4 5291 na 5 5248 da 6 4827 i 7 4436 se 8 4278 po 9 4252 ko 10 4062 ne ⋮ ⋮ ⋮ 2417 1 ut The Zipf-Mandelbrot distribution (Wimmer & Altmann, 1999, p. 666), ...Marija Radojičić, Biljana Lazić, Sebastijan Kaplar, Ranka Stanković, Ivan Obradović, Ján Mačutek, Lívia Leššová. "Frequency and Length of Syllables in Serbian" in Glottometrics (2019)
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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... S o q , O ) uiseg onoqqng 'sysodop oyeuoqeo ordejodmu1lo} '3 '(600C “/D JO D{SMOqQZIOTA\) UIČUO PJnf USIJOJ *SOyUUuIO|Og 'p 'po}}tulo Oje pue|}oog UI 2/5S JO S|S] 2U} uIO1J S9jruUu1O|Oq [600qqng-[0010g '(pO0ZC *D{SAOqZIOTA) 10s ejep oytsodutoo *sojruuio[og ...
... Dj{sAoaOrsbr) Xq uomeuoZ IUOo/13de :'(Z00Z) PAOyjPUOX Aq 'uomeuoZ pi||Suotd[eo '(000C ) PAOXVUOX»| Aq uombuOZ OjP||98b[]Oulp Snoo1eo|PO '(c661) '/P 72 aouyreSurvgj Aq uotjeuoz uvtiP|OIpe1 '(poO0C) / J2 u19)spe1r) utoij so8e puve uonbuoz oytuoutmuryV '(900Z) D{ ...
... Kopy Soltysie and Placzliwa Skala in the eastern Tatra Mts (Western Carpa- thians) of Poland and Slovakia: stratigraphy, facies and am- monites. Po/lumina Jurassica, 11: 19-58. Jach, R., 2002. Lower Jurassic spiculite series from the Križna Unit in the Tatra Mts, Western Carpathians, Poland. ...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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Mineral Resources of Serbia: Environmental, Societal and Economic Challenges
... occurred in the eastern and central locations (DM and PO) and the maximum in the southern location (NI). The observed precipitation for the same period ranged from 150.9 mm in the southern locations (NI and VR) to 233.8 mm in the central locations (PO and KR) (Figure 4b). For the period 1971-2000, the ...
... the effective temperature ranged from 1131.0 (DM and PO) to 1514.5 "C in the southern location (NI) (Figure 5). For the JJA period, the sum of the observed tropical days was minimal in the central location 19 (PO) and eastern 20 (DM) and maximal in the southern 33 (NI) (Figure 6). For the period ...
... Republici Srbiji, 2011]. Serbian Environment Protection Agency - SEPA. 2016. Agriculture and Environment in the Republic of Serbia [Poljoprivreda i životna sredina u Republici Srbiji|. Serbian Environment Protection Agency - SEPA. 2017. The State of Soil in the Republic of Serbia, 2015 [Izveštaj o ...Vladimir Simić, Rade Jelenković, Dragana Životić. "Mineral Resources of Serbia: Environmental, Societal and Economic Challenges" in Serbia: Current Issues and Challenges in the Areas of Natural Resources, Agriculture and Environment,, Nova Science Publishers, Inc. (2019)
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Long-term planning methodology for improving wood biomass utilization
The insufficiently developed forest management system is often followed by undeveloped forest resources supply chain and insufficient institutional support. These cause inefficient usage of fuel-wood as well as huge amounts of unused forest residues. In order to achieve optimal and long-term sustainable utilisation of biomass, an original methodology based on the interaction of mathematical optimization and backcasting approach has been developed. Mathematical optimization is used for both generation and consideration of techno-economic parameters of the forest biomass supply chain. ...Vladimir Vukašinović, Dušan Gordić, Marija Živković, Davor Koncalović, Dubravka Živković. "Long-term planning methodology for improving wood biomass utilization" in Energy, Elsevier BV (2019). https://doi.org/10.1016/j.energy.2019.03.105
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An intelligent hybrid system for surface coal mine safety analysis
Nikola Lilić, Ivan Obradović, Aleksandar Cvjetić. "An intelligent hybrid system for surface coal mine safety analysis" in Engineering Applications of Artificial Intelligence (2010)
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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... манускрипт о астро - номским утицајима на климатске промене довео је до успешне сарадње са Алфредом Вегенером који је тражио додатне аргументе који би по - држали његову хипотезу континенталног дрифта. Разлози који доводе до климатских промена омогућили су поглед у геолошку прошлост, али и моделовање ...Dejan Radivojević. "A hundred years of Milutin Milanković's climate change theory - geological implications" in Geološki anali Balkanskoga Poluostrva, Univerzitet u Beogradu, Rudarsko geološki fakultet (2020). https://doi.org/10.2298/GABP201125011R
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Definition of groundwater genesis and circulation conditions of the complex hydrogeological karst system Mlava–Belosavac–Belosavac-2 (eastern Serbia)
Ljiljana Vasić, Saša Milanović, Zoran Stevanović, Laszlo Palcsu. "Definition of groundwater genesis and circulation conditions of the complex hydrogeological karst system Mlava–Belosavac–Belosavac-2 (eastern Serbia)" in Carbonates and Evaporites, Springer Science and Business Media LLC (2020). https://doi.org/10.1007/s13146-020-00550-3
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Underground loading-haulage equipment selection with application of topsis method with different weighting methods of criteria
The choice of adequate mining machines is one of the most complex problems in the underground exploitation of mineral raw materials. The weight of such a decision is reflected in the high prices of these machines and the occurrence of even greater costs during their use if their choice was wrongly conceived. There are numerous examples from practice in which such decisions were made solely on the basis of comparing the prices of machines, without considering any of the ...utovarno-transportna mehanizacija, izbor, TOPSIS, entropija, standardna devijacija, težina kriterijumaVladimir Krivošić, Luka Crnogorac, Rade Tokalić. "Underground loading-haulage equipment selection with application of topsis method with different weighting methods of criteria" in Underground mining engineering, University of Belgrade - Faculty of Mining and Geology (2024)
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The use of biological markers in determination of origin and type of organic matter in the Tisza river sediments
Snežana Štrbac, Gordana Gajica, Aleksandra Šajnović, Nebojša Vasić, Ksenija Stojanović, Branimir Jovančićević (2013)The objective of the study was to determine the origin and type of organic matter (OM) of the Tisza recent sediments along the distance of 153 km through the territory of Serbia. For this purpose group organic-geochemical parameters and biomarker compositions were used. All samples contain approximately same amount of OM, which was deposited under uniform, slightly reducing conditions. Based on the distribution of n-alkanes, the origin and type of OM could not be precisely estimated. However, n-alkane patterns ...... ШТРБАЦ 1 , ГОРДАНА ГАЈИЦА 2 , АЛЕКСАНДРА ШАЈНОВИЋ 2 , НЕБОЈША ВАСИЋ 3 , КСЕНИЈА СТОЈАНОВИЋ 4 и БРАНИМИР ЈОВАНЧИЋЕВИЋ 4 1Факултет заштите животне средине, Универзитет ЕДУКОНС, Војводе Путника 87, 21207 Сремска Каменица, 2Центар за хемију, ИХТМ, Студентски трг 12–16, 11000 Београд, 3Рударск ...Snežana Štrbac, Gordana Gajica, Aleksandra Šajnović, Nebojša Vasić, Ksenija Stojanović, Branimir Jovančićević. "The use of biological markers in determination of origin and type of organic matter in the Tisza river sediments" in Journal of Serbian Chemical Society, Beograd : Srpsko hemijsko društvo (2013). https://doi.org/10.2298/JSC130614087S
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Hydrothermal Synthesized and Alkaline Activated Carbons Prepared from Glucose and Fructose—Detailed Characterization and Testing in Heavy Metals and Methylene Blue Removal
Sanja Krstić, Milan Kragović, Maja Pagnacco, Vladimir Dodevski, Branka Kaluđerović, Miloš Momčilović, Ivica Ristović, Marija Stojmenović (2018)glukoza, fruktoza, аktivni ugalj, hidrotermalni tretman, aktivacija hidroksida, teški metali, metilen plavo... area (SBET) of obtained samples was calculated by the law of BET (Brunauer, Emmet, Teller) theory [41] from the best linear fit in the region p/po < 0.01 (p and po represent the equilibrium and saturation pressures of nitrogen at a fixed temperature). Using BJH (Barrett, Joyner and Halenda) method [41], ...Sanja Krstić, Milan Kragović, Maja Pagnacco, Vladimir Dodevski, Branka Kaluđerović, Miloš Momčilović, Ivica Ristović, Marija Stojmenović . "Hydrothermal Synthesized and Alkaline Activated Carbons Prepared from Glucose and Fructose—Detailed Characterization and Testing in Heavy Metals and Methylene Blue Removal" in Minerals, MDPI (2018)
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Flood protection and water utilization of karst poljes: example of Gatačko Polje, Eastern Herzegovina
Tina Dašić, Ljiljana Vasić (2020)Earth-Surface Processes,Geology, Pollution, Soil Science, Water Science and Technology, Environmental Chemistry,Global and Planetary ChangeTina Dašić, Ljiljana Vasić. "Flood protection and water utilization of karst poljes: example of Gatačko Polje, Eastern Herzegovina" in Environmental Earth Sciences, Springer Science and Business Media LLC (2020). https://doi.org/10.1007/s12665-020-08987-4
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Towards the semantic annotation of SR-ELEXIS corpus: Insights into Multiword Expressions and Named Entities
Овај рад представља активности на развоју корпуса ELEXIS-sr, српском додатку вишејезичном анотираном корпусу ELEXIS-а, који се састоји од семантичких анотација и репозиторија значења речи. ELEXIS је паралелни вишејезични анотирани корпус на десет европских језика, који може да се користи као вишејезички репер за евалуацију европских језика са мање и средње развијеним ресурсима. Фокус овог рада је на вишечланим изразима и именованим ентитетима, њиховом препознавању у скупу реченица ELEXIS-sr и поређењу са анотацијама на другим језицима. Разматрају се први кораци ...Cvetana Krstev, Ranka Stanković, Aleksandra Marković, Teodora Mihajlov. "Towards the semantic annotation of SR-ELEXIS corpus: Insights into Multiword Expressions and Named Entities" in Proceedings of the Joint Workshop on Multiword Expressions and Universal Dependencies (MWE-UD) @ LREC-COLING 2024, Turin, May 25, 2024, ELRA and ICCL (2024)
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Bilingual lexical extraction based on word alignment for improving corpus search
Jelena Andonovski, Branislava Šandrih, Olivera Kitanović. "Bilingual lexical extraction based on word alignment for improving corpus search" in The Electronic Library, Emerald (2019). https://doi.org/10.1108/EL-03-2019-0056