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Wyświetlanie 1-3 z 3
Tytuł:
Regression model change of normal contact forces in hexagonal idler housing for pipe conveyor loaded with transported material
Autorzy:
Molnár, Vieroslav
Stehlíková, Beáta
Powiązania:
https://bibliotekanauki.pl/articles/103307.pdf
Data publikacji:
2018
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
contact forces
pipe conveyor belt
idler rolls
tension
release
siły kontaktowe
przenośnik rurowy
rolki napinające
napięcie
Opis:
Pipe conveyors make up important elements of ecological transport systems. They ensure the material is transported in the conveyor belt coiled to the shape of a pipe. Various stresses impact their most important component - the conveyor belt - straining it in both, the longitudinal and the transverse direction. This phenomenon arises in connection with the shape of the conveyor route of the pipe conveyor, the width and thickness of the conveyor belt, the volume of the material conveyed, and the like. In recent years, more and more authors have been researching contact dependencies of the normal forces acting on the idler rolls located in idler housings. Their task is to design such structure of a conveyor belt that will put the least strain on the idler rolls, thus significantly reducing the power required to ensure the movement of the pipe conveyor. In this way, greater efficiency of eco-friendly transport will be achieved. Following experimental research, the paper describes a regression model of dependencies of normal contact forces on tension forces required, as per individual idler rolls in idler housing.
Źródło:
Advances in Science and Technology. Research Journal; 2018, 12, 2; 244-251
2299-8624
Pojawia się w:
Advances in Science and Technology. Research Journal
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Enterprise ownership patterns in the least developed districts of Slovakia
Autorzy:
Csabay, Marek
Vincúrová, Zuzana
Stoch, Milan
Stehlíková, Beáta
Powiązania:
https://bibliotekanauki.pl/articles/22444305.pdf
Data publikacji:
2021
Wydawca:
Instytut Badań Gospodarczych
Tematy:
regional business structure
cluster analysis
spatial autocorrelation
ownership types
least developed districts
Opis:
Research background: The literature overview shows a blank space regarding the effects of ownership on the determination of enterprises' spatial distribution. Various papers identify differences between determinants of the spatial distribution of foreign direct investments, exporters in foreign ownership, and domestically owned exporters; however, they mostly agree on the role of big cities, economic centres, and state of infrastructure as well as historical patterns. Purpose of the article: The article focuses on the spatial distribution analysis of enterprise units from their owner's perspective on the empirical evidence from all 79 districts of the Slovak Republic. Special attention is given to the category of the least developed districts. Methods: Within the presented article, the authors investigate the characteristics of the regional spatial distribution of business entities concerning standard ownership categories using the cluster analysis. The presented approach is twofold: firstly, the authors investigate the share of individual ownership types on the district level, and secondly, the number of enterprises by ownership categories is adjusted to 100,000 inhabitants. Cluster analysis and methods of spatial statistics are applied in both approaches. Findings & value added: The main results show a relation between the district's inclusion into the group of the least developed districts and enterprise ownership characteristics in these districts mainly through the relative underrepresentation of the secluded inland, foreign and international types of ownership, as well as their geographical clustering. The results of the presented research can be used in policy-making targeting business activity in underdeveloped districts. At the same time, the results provide basis for limited theoretical generalisations based on a single-country case study with regard to principles of business ownership structures development.
Źródło:
Equilibrium. Quarterly Journal of Economics and Economic Policy; 2021, 16, 4; 807-838
1689-765X
2353-3293
Pojawia się w:
Equilibrium. Quarterly Journal of Economics and Economic Policy
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analysis of Temperatures in the Cold Storage of Finished Products
Autorzy:
Bogdanovská, Gabriela
Stehlíková, Beáta
Kačur, Ján
Powiązania:
https://bibliotekanauki.pl/articles/102539.pdf
Data publikacji:
2019
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
cold storage warehouse
temperature monitoring
temperature fluctuations
statistical evaluation
Kruskal-Wallis test
Bartlett test
Nemenyi’s test
magazyn chłodniczy
monitorowanie temperatury
wahania temperatury
ocena statystyczna
test Kruskala-Wallisa
test Bartletta
test Nemenyi
Opis:
The analysis of temperatures in the cold store of finished products was performed due to the occurrence of temperature fluctuations. The analysis in the report was conducted using Kruskal-Wallis test, Bartlett test, Nemenyi’s test Statistical analysis of measured values in individual months. The relationship between the temperature in the cold store and the outside air temperature was investigated. Quality tools were also used in the thesis. The causes of temperature fluctuations were determined by Cause-Effect diagnostics. The relationship between the main causes was analyzed with Relation Diagram. Corrective measures were then determined to minimize the temperature fluctuations in the cold store.
Źródło:
Advances in Science and Technology. Research Journal; 2019, 13, 3; 54-66
2299-8624
Pojawia się w:
Advances in Science and Technology. Research Journal
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-3 z 3

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