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Wyszukujesz frazę "Pavlykivskyi, V." wg kryterium: Autor


Wyświetlanie 1-2 z 2
Tytuł:
Estimating the compressive strength of concrete, using vacuum dewatering technique
Autorzy:
Subhash, D.
Gupta, S. M.
Setia, S.
Pavlykivskyi, V.
Powiązania:
https://bibliotekanauki.pl/articles/378711.pdf
Data publikacji:
2019
Wydawca:
Stowarzyszenie Komputerowej Nauki o Materiałach i Inżynierii Powierzchni w Gliwicach
Tematy:
vacuum dewatering
concrete compressive strength
artificial neural network
Support Vector Machine
odwadnianie próżniowe
wytrzymałość betonu na ściskanie
sztuczna sieć neuronowa
maszyna wektorów wspierających
Opis:
Purpose: Investigate the potential of vacuum dewatering process of on three different grades of concrete namely M20, M30 and M40 to evaluate its compressive strength. Design/methodology/approach: For this study a data set of 90 experimental observations obtained from laboratory testing with and without application of vacuum dewatering after designing and casting the concrete of said three grades. The standard cubes of size 150 mm × 150 mm × 150 mm were obtained by core cutting and tested for compression after 3, 7, 14, 21 and 28 days of proper curing. Accuracy of prediction of compressive strength of concrete by application of M5P, ANN and SVM as artificial intelligence techniques and their feasibility are assessed to estimate the compressive strength of the concrete enacted with vacuum dewatering technique. A total data set was segregated in two groups. A group of 63 observations was used for model development and smaller group of 27 observations was used for testing the models. Findings: Overall performance of ANN based developed model is better than M5P and SVM based models for predicting the compressive strength of concrete for this data set. Research limitations/implications: Investigated three different grades of concrete namely M20, M30 and M40 to evaluate its compressive strength. The experimental research involved only testing of cubes only. Practical implications: Using ANN based developed model makes it possible to quickly and accurately predict the compressive strength of concrete. Originality/value: The results of comparing three models for predicting the compressive strength of concrete and the optimal values of ANN based developed models are presented. Earlier no one has applied M5P, ANN and SVM modelling to predict the compressive strength of vacuum dewatered concrete.
Źródło:
Archives of Materials Science and Engineering; 2019, 99, 1/2; 30-41
1897-2764
Pojawia się w:
Archives of Materials Science and Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Relationship study between the student learning approach in the occupational safety and health field and acquired competencies
Autorzy:
Nanka, O.
Lysychenko, M.
Kiriyenko, M.
Pavlykivskyi, V.
Duyunova, T.
Senchuk, I.
Powiązania:
https://bibliotekanauki.pl/articles/368460.pdf
Data publikacji:
2019
Wydawca:
Stowarzyszenie Komputerowej Nauki o Materiałach i Inżynierii Powierzchni w Gliwicach
Tematy:
specialists training methods
industrial safety
environmental
occupational safety and health
competencies
metody szkoleniowe
bezpieczeństwo przemysłowe
środowisko
bezpieczeństwo i higiena pracy
BHP
kompetencje
Opis:
Purpose: To search for training methods for specialists in industrial safety, environmental and occupational safety and health in conditions of insufficient (or absent) laboratory support and to study the relationship between the student learning approach and acquired competencies. Design/methodology/approach: To study modern advances in industrial safety, environmental and occupational safety and health and training methods for specialists a systematic literature review approach has been used. For publications from 2017, queries were asked through keywords and safety related topics. To relationship study between the student learning approach and acquired competencies a student survey on random sampling has been used. A total of 112 students of the 3rd and 4th year of study at the university were interviewed. Findings: The results of the survey showed that the students’ number who simultaneously successfully answered theoretical questions and completed practical tasks is 33.8% from the group with theoretical training and 75% from the group that was trained in the workplace. The relationship between the groups with a visit to the existing enterprise and acquired competencies was justified by the association coefficient and contingency coefficient that are 0.7 and 0.4 respectively. Research limitations/implications: A student’s survey was conducted at only one university. Questions were asked only according to the curriculum of the course “Labour Protection”. No survey for other training courses conducted. Practical implications: The research results are reasonable and can be applied at universities to improve the educational process of training specialists. Originality/value: It was proposed that students be trained using existing enterprises as a laboratory base and by the methods of statistics mathematical processing was substantiated the proposal feasibility.
Źródło:
Journal of Achievements in Materials and Manufacturing Engineering; 2019, 95, 1; 32-41
1734-8412
Pojawia się w:
Journal of Achievements in Materials and Manufacturing Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-2 z 2

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