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Упит dcterms_subject_txt:proctor compaction test

297 items

  • Оцјена водопропусности понорске зоне Шуковићу (Цернићко поље) помоћу Лижоновог теста

    Петар Војновић, Саша Милановић, Љиљана Васић (2022)
    One of the specificities of reservoirs forming in highly karstified terrains is reflected in the wide range of unknowns, specifically during reservoir formation, filling and operation. Unfortunately, despite complex research, many reservoirs constructed in karst terrains have problems with water losses from the reservoir to other aquifers due to ponor and ponor zones which are a common in the karst of Eastern Herzegovina. One of such zones is Šuković ponor located in the southern part of the Cerničko polje ...
    карст, Шуковића понор, Церничко поље, водопропусност, Лижонов тест

  • Geotehnički aspekti izgradnje visećeg pešačkog mosta u Starom gradu u Užicu

    Zoran Berisavljević, Miloš Marjanović, Uroš Đurić (2023.)
    U radu su prikazani rezultati geotehničkih istraživanja za potrebe izgradnje visećeg pešačkog mosta preko klisure reke Đetinje u Užicu. Predviđeno je da most, sistema prednapregnute trake, omogući prelaz pešacima sa desne dolinske strane na stranu Starog grada, koja je opasana strmom liticom (cca. 40 m visine). Za potrebe formiranja geotehničkog modela i strukturnog sklopa krečnjačke stenske mase korišćen je postupak fotogrametrijskog snimanja dronom. Predviđeno je da se zatežuća sila (od oko 30 MN), koju most prenosi na obalni stub, ...
    fotogrametrija, stabilnost kosina, pukotine, prednapregnuta sidra, test granične nosivosti, paker (Ližonov) test
    ... odgovarajući monitoring tokom izgradnje mosta. Ključne reči: fotogrametrija, stabilnost kosina, pukotine, prednapregnuta sidra, test granične nosivosti, Paker (Ližonov) test GEOTECHNICAL ASPECTS OF CONSTRUCTION OF STRESSED RIBBON BRIDGE IN UŽICE OLD TOWN Summary: This study shows the results of ...
    ... be accepted and transfered to the rock mass by the system of prestressed anchors. Two investigation test were performed on anchors installed in sub-horizontal boreholes. Successful anchor load test and numerical analysis showed that the rock mass is capable of sustaining tensile Jorce induced by the ...
    ... monitoring during the construction stage. Keywords: photogrammetry, slope stability, discontinuities, pre-stressed anchors, investigation test, Packer (Lugeon) test ! dr,doc., Rudarsko-geološki fakultet, Univerzitet u Beogradu, Đušina 7, Beograd, z.berisavljevic(ayrgf.bg.ac.rs ! dr,van. prof.,Rud ...

  • Determination of Mechanical Properties of Altered Dacite by Laboratory Methods

    Veljko Rupar, Vladimir Čebašek, Vladimir Milisavljević, Dejan Stevanović, Nikola Živanović (2021)
    This paper presents a methodology for determining the uniaxial and triaxial compressive strength of heterogeneous material composed of dacite (D) and altered dacite (AD). A zone of gradual transition from altered dacite to dacite was observed in the rock mass. The mechanical properties of the rock material in that zone were determined by laboratory tests of composite samples that consisted of rock material discs. However, the functional dependence on the strength parameter alteration of the rock material (UCS, intact ...
    Geology, Geotechnical Engineering, Engineering Geology
    ... after testing—triaxial test: (a) 0% AD, (b) 10% AD, (c) 30% AD, (d) 50% AD, (e) 70% AD, (f) 100% AD. Minerals 2021, 11, 813 11 of 19 The parameters of intact rock material for the Hoek–Brown failure criterion [23] were determined based on the test results of the triaxial test and mean values of UCS ...
    ... rock mass, based on the results of laboratory tests of UCS and triaxial test of composite samples. This paper presents the methodology for determining the mechanical properties, UCS, and triaxial compressive strength or triaxial test on many composite samples with different participation of weaker rock ...
    ... moment of failure, A—specimen’s cross-section area. Triaxial tests were carried out by the current ISRM recommendations for this type of test [19]. A triaxial test was performed for five different values of confining pressures (σ3), namely, 5, 10, 15, 20, and 30 MPa. Considering that information on “in-situ” ...

  • Standardization of Serbian gravity database on a test area

    Vasiljević Ivana, Ignjatović Snežana, Đurić Dragana (2017)

  • Granite resistance to atmospheric attack – test of accelerated weathering

    Matović Vesna, Erić Suzana, Đokić Olivera, Matović Nenad, Munjas Branko (2010)

  • Primena impulsne termografije za ispitivanje aluminijumskih i pleksiglas test uzoraka sa periodičnom strukturom defekata

    Tomić Ljubiša, Damnjanović Vesna, Kovačević Aleksandar, Knežević Dragan, Kovačević Katarina (2014)

  • Analiza uticaja početne temperature test uzorka pri primeni impulsne termografije

    Tomić Ljubiša, Damnjanović Vesna, Mišković Katarina, Bondžulić Boban, Knežević Dragan, Kovačević Aleksandar (2018)

  • Water supply management measures in test areas of IPA1

    Stevanović Zoran, Dokmanović Petar, Milanović Saša, Polomčić Dušan (2012)

  • Suitability of the methylene blue test for determination of cation exchange capacity of clay minerals related to ammonium acetate method

    Milošević Maja, Logar Mihovil, Dojčinović Biljana, Erić Suzana (2015)

  • 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
    ... Figure 3: Precision of lemmatization per token, obtained by two TreeTagger based taggers 3959 sentences tokens words train dev test train dev test train dev test sr basic 7,677 965 965 141,438 18,055 17,985 119,378 15,194 15,116 sr 25 10,661 1,336 1,348 233,027 29,486 29,801 201,489 25,432 25 ...
    ... of PoS-tagging with SerSpaCy tagger on different test sets and for different PoS-tags Figure 5: Results of PoS-tagging with TT19 tagger on different test sets and for different PoS-tags Figure 6: Results of PoS-tagging with TT11 tagger on different test sets and for different PoS-tags taggers as well ...
    ... Intera respectively. Each of the subsets was split into training, development and test sets (80%:10%:10%). In Table 4 the distributions of number of sentences, tokens and words per training, devel- opment and test sets are given. Using the CLI train command, we trained five different models. Each ...

  • Load test of Large Diameter Piles for the Bridge Across Danube River in Belgrade

    Rakić Dragoslav, Šušić Nenad, Basarić Irena, Đoković Ksenija, Berisavljević Dušan (2014)

  • New data from the Vardar suture zone in the Republic of Macedonia (FYROM) used to test alternative models of Jurassic ophiolite emplacement and Neotethyan evolution in the Balkan region

    Robertson H.F. Alastair, Trivić Branislav, Đerić Nevenka (2011)

  • Analiza nosivosti vertikalno opterećenog šipa za potrebe izgradnje petlje „Merošina 1“ na autoputu E-80 deonica: Niš – Merošina

    Dragoslav Rakić, Nikola Božović, Miloš Stevanović, Milan Bogdanović (2023)
    U Srbiji je počela izgradnja autoputa E-80 koji će predstavljati saobraćajno čvorište zapadnog Balkana i biće deo glavne regionalne transportne mreže jugoistočne Evrope. Njegova ukupna dužina kroz Srbiju iznosi 77 km, a prva deonica u dužini od 5.5 km je završena i puštena u saobraćaj krajem jula 2023. god. To je prva od četiri deonice Sektora 1 čija je dužina 32.65 km. U sklopu petlje „Merošina 1“ izgrađen je nadvožnjak koji je oslonjen na devet stubnih mesta na međusobnom ...
    petlja Merošina 1, šip, probno opterećenje šipa, projektni pristup, granična stanja

  • Laboratory testing of fly ash

    Miloš Šešlija, Aleksandra Rosić, Nebojša Radović, Milinko Vasić, Mitar Đogo, Milovan Jotić (2016)
    Fly ash is one of the most common waste materials created by burning of coal. It is composed of smaller particles, consisting mainly of aluminosilicate glass, mullite and quartz, which are collected by electrostatic separators (filter) of gaseous products arising from the combustion of coal. This paper presents the pozzolanic properties, mechanical properties, chemical and mineral composition of fly ash obtained in the combustion process in a power plant Nikola Tesla A (PPNT A) with the addition of a ...
    chemical composition, fly ash, mechanical properties, mineral properties, pozzolanic properties, X-ray diffraction
    ... used and prepared by the procedure of Proctor homogenized samples, with diameter of (D) 100 mm and hight of (h) 200 mm, which satisfied the standard height to diameter ratio of 2:1. The samples were specially prepared in a three-part mold and compacted by Proctor procedure in five layers. All prepared ...
    ... For the experiment the cylindrical shape samples were used D = 102 mm with the length (L) 116 mm, and specially prepared in a standard mold by Proctor procedure in three layers. These samples were cured in a wet chamber for 28 days. Indirect tensile strength – Brazilian experiment, was done according ...
    ... S1 and S2, taken from the thermal PPNT A and the results are shown in Tab. 9. Table 9 The test results of compressive strength and tensile strength Tested characteristics Month of sampling Test results Single Average Average for S1 and S2 Tensile strength / kPa S1 2090 1950 ...

  • Geomechnical research for the new bucket wheel excavator testing at Open pit “Filijala”

    Vladimir Čebašek, Nebojša Gojković, Veljko Rupar, Miodrag Pribićević (2020)
    Since 1976 cement marl excavation at open-pit mine „Filijala” is carried out by continuous exploitation technology using bucket wheel excavator SH 400 manufactured by Orenstein und Koppel (O & K) company. Due to the bucket wheel excavator time-worn and high operating cost it was necessary to replace it with new one. In order to test the new bucket wheel excavator and prove its capacity a testing zone was defined as test block for excavation, in which the bucket wheel ...
    отпор на копање, лапорац, роторни багер

  • Development and Evaluation of Three Named Entity Recognition Systems for Serbian - The Case of Personal Names

    Branislava Šandrih, Cvetana Krstev, Ranka Stanković (2019)
    In this paper we present a rule- and lexicon-based system for the recognition of Named Entities (NE) in Serbian news paper texts that was used to prepare a gold standard annotated with personal names. It was further used to prepare training sets for four different levels of annota tion, which were further used to train two Named Entity Recognition (NER) sys tems: Stanford and spaCy. All obtained models, together with a rule- and lexicon based system were evaluated on ...
    NER, Named Entity Recognition Systems, Serbian, Personal Names
    ... towards STUDENTS_GOLD test text. All measures are for all NER systems and models highest for weak calculation, followed by weighted, the strict calculation giving the lowest result. However, as displayed in Figure 1 for the STUDENTS-GOLD test set and in Figure 2 for the DANAS-GOLD test set the mutual r ...
    ... should note, however, that their test set contained a smaller number of personal names (approximately one third of num- ber of personal names in our test sets). Jiang et al. (2016) compared 4 NER systems, two of which were STANFORD NER and SPACY NER, for English. Their test set consisting of Wiki articles ...
    ... We split each of these four versions of the gold standard (namely PERS_{1, 3, 4, 9}) into train- ing and test sets (containing 8, 151 and 895 sen- tences, respectively). We named this gold test set STUDENTS-GOLD. As we wanted to have an independent text of the similar structure and content we prepared ...

  • Productivity improvement with use of beam gas compressor: pilot test in Southeastern Europe mature field

    Bojan Martinović, Dušan Danilović, Branko Grubač, Robert Fadiga (2022)
    Most of the wells in the oilfield Turija are operating with sucker rod pumps, where casing pressure at around 15 bar, and with marginal production rates. The high value of casing pressure indicates high pressure on the face of the formation and depends directly on well productivity. In addition, with increasing value of the casing pressure gas column in the annulus is moving the dynamic fluid level near pump intake and more gas is entering the pump, it results ...
    beam gas compressor, BGC, increase productivity, sucker rod pump, SRP, mature field, artificial lift, production optimisation

  • Hidrogeohemija prirodnih radioaktivnih elemenata u podzemnim vodama Srbije

    Marina D. Ćuk (2018-02-23)
    Osnovni cilj doktorske disertacije predstavljao je definisanje prirodnih koncentracija (engl. background values) U, Th, i K u podzemnim vodama, i definisanje hidrogeohemijskih uslova koji utiču na distribuciju navedenih elemenata u podzemnim vodama...
    prirodni radioaktivni elementi, podzemna voda, geohemijske sredine, hidrogeohemijski uslovi, neparametarska statistička analiza, logistički model, hidrohemijsko modeliranje
    ... Mann-Whithey U testa (M-W) i Krukal-Wallis testa (K-W), koji se međusobno razlikuju prema broju promenjivih koji se razmatra u analizi. 8.1. Analiza varijanse primenom Mann-Whitney testa Mann–Whitney U-test (u literaturi još poznat kao Mann–Whitney–Wilcoxon test, Wilcoxon rank-sum test ili Wilcoxon ...
    ... dokaza protiv hipoteze H0, a u korist hipoteze H1. Test je određen definisanjem statistike testa (S), odnosno vrednosti za koju se odbacuje hipoteza H0. Zaključak testa može biti jedan od sledeća dva:  H0 se odbacuje ako je vrednost testa S u oblasti odbacivanja, a kao objašnjenje predlaže ...
    ... Analiza varijanse primenom Kruskal-Wallis testa Kruskal-Wallis test (K-W) je neparametarski test koji se koristi za procenu značajnosti razlika merene varijable u odnosu na nominalnu (kategoričku) varijablu koja ima tri ili više grupa. Nulta hipoteza K-W testa je da uzorci potiču iz iste populacije ...

  • A comparison between ARIMA, LSTM, ARIMA-LSTM and SSA for cross-border rail freight traffic forecasting: the case of Alpine-Western Balkan Rail Freight Corridor

    Miloš Milenković, Miloš Gligorić, Nebojša Bojović, Zoran Gligorić (2023)
    železnica, prekogranični teretni saobraćaj, ARIMA, LSTM, SSA

  • Хидрогеохемијске карактеристике и квалитет вода слива Требишњице, Република Српска, Босна и Херцеговина

    Dragoslav R. Banjak (2016-08-25)
    Упркос неповољном временском и просторном распореду, воде су најзначајнијиприродни ресурс Источне Херцеговине. Ова чињеница довела је до реализацијепројекта „Вишенамјенског хидросистема Требишњица“, којим је, премаМилановићу (2006), до сада обухваћено: седам хидроелектрана, шестакумулација, шест брана, шест тунела укупне дужине 59,7 km, неколикоприступних тунела, 62,5 km бетонског канала кроз Попово поље, канал крозДабарско (6750 m) и Фатничко поље (2770 m) и систем тунел-канал или цјевоводпрема Дубравама.У почетку са доминантним енергетским предзнаком, концепција јетрансформисана у интегрално рјешење вишенамјенског коришћења и заштитевода и животне ...
    хидрогеохемијски процеси, мултиваријантна статистичкаанализа, инверзно геохемијско моделовање, квалитет воде, употребиљивост водеза наводњавање, слив Требишњице
    ... састава вода су подвргнути и непараметарским тестовима. При томе није било могуће примијенити Крускал-Волисов тест, као алтернативу једнофакторској анализи варијансе (Kruskal, Wallis, 1952), већ њему по природи сличан Ман-Витнијев U тест (Mann-Whitney U test), који се употребљава за испитивање разлика ...
    ... препоручује уз било који други накнадни тест (Field, 2009). Резултати примјене накнадних тестова над издвојеним подгрупама нису приказани због обимности. У обзир су узета сва три наведена теста, с тим да је предност дата Бонферонијевом и Хохберговом GT2 тесту, с обзиром да нема основа за сумњу ...
    ... алтернативног Велчовог (Welch, 1951) и Браун-Форсајтовог (Brown, Forsythe, 1974) теста (табела 15). Oви тестови, отпорни на кршење претпоставке о хомогености варијансе, по правилу се користе када Левенеовим тестом није потврђена нулта хипотеза (Field, 2009, Lomax, Hahs-Vaughn, 2012, Mayers, 2013 ...