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Tytuł:
Rescue drive for the gondola cableway system illustrated by the example of the Solina cableway
Autorzy:
Góra, Ignacy
Wilk, Tomasz
Powiązania:
https://bibliotekanauki.pl/articles/38955923.pdf
Data publikacji:
2022
Wydawca:
Politechnika Warszawska, Wydział Transportu
Tematy:
safety
risk in gondola cableway system
rescue drives
passenger evacuation concept
bezpieczeństwo
kolej gondolowa
ewakuacja pasażerów
Opis:
Rescue drives applied in continuous traffic cable railways have not been a common solution. The main reason for this is the ability to ensure effective evacuation of passengers by traditional methods, i.e. by way of rescue teams and methods known as evacuation from heights. This is mainly a result of usually convenient location of the cableway system on site and easy access to the vehicles (cars), both from the ground level and as well as the overhead driving cable or route pylons. In case of the Solina gondola cableway access to vehicles (cars) in the manner mentioned above, at the prevailing section of the route is impossible or extremely difficult and even dangerous. Hence, the passenger evacuation concept by means of the rescue drive, in case of damage to the main and emergency drives of the cableway in question, has become indispensable and necessary.
Źródło:
WUT Journal of Transportation Engineering; 2022, 135; 115-131
1230-9265
Pojawia się w:
WUT Journal of Transportation Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Influence of drying and granulation process conditions on the characteristics of micronutrient chelates granules
Autorzy:
Michałek, Bernard
Bizon, Katarzyna
Gierczyk, Błażej
Wilk, Tomasz
Rapp, Magdalena
Powiązania:
https://bibliotekanauki.pl/articles/27315663.pdf
Data publikacji:
2023
Wydawca:
Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
Tematy:
fluidized bed spray granulation
chelate granules
surfactants
population balance modelling
granule morphology
Opis:
Fluidized-bed spray granulation (FBSG) enables manufacturing particles with desired characteristics, including particle size distribution (PSD), density, or dust content. This study investigated the effect of selected factors on the granules obtained in a continuous FBSG of chelated fertilizers for foliar applications. The effect of surfactant addition to the solution sprayed into the bed and perturbations of operating parameters on PSD and granules morphology was studied. The experiments were supplemented with calculations based on a population balance equation (PBE). It was shown that granules manufactured with the tenside addition are more regular in shape, and thus less prone to mechanical wear. It was demonstrated that increasing rotational mill speed does contribute to a slight increase in the amount of dust, but in the long term, it does not disturb the regular agglomeration process. The computational results confirm that, despite the complexity of the process, its description with PBE is feasible.
Źródło:
Polish Journal of Chemical Technology; 2023, 25, 3; 40--49
1509-8117
1899-4741
Pojawia się w:
Polish Journal of Chemical Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The analysis of pressure drop, spray angle, and sprinkling intensity distribution in the spray stream produced by the water-foam nozzle
Autorzy:
Ochowiak, Marek
Krupińska, Andżelika
Włodarczak, Sylwia
Matuszak, Magdalena
Zielińska, Patrycja
Czernek, Krystian
Witczak, Stanisław
Wilk, Tomasz
Powiązania:
https://bibliotekanauki.pl/articles/2106484.pdf
Data publikacji:
2022
Wydawca:
Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
Tematy:
fire safety
harvest fire prevention
atomization
spraying intensity
pressure drops
Opis:
This paper summarises a series of large-scale fire suppression tests conducted to simulate a fire in the big surface and/or surface sprinkling. The subject of this paper is the research on water spraying with the use of the Turbo Jet 2011 water-foam nozzle manufactured by Supon Białystok. The results discuss the pressure losses caused by the flow through the discharge hose, spray angle, and the intensity of surface sprinkling. The greatest stream ranges and the highest maximum values of the sprinkling intensity were obtained at the capacity of 400 l/min, and a solid spray angle. The smallest values were obtained at 200 l/min, a pressure of 5 bar, and a solid spray angle. The actual pressures taking into account the losses in the hose section were calculated. As for the highest firefighting effectiveness of the stream, the authors recommended the following parameters: semi spray angle, 200 l/min, and 2.5 bar.
Źródło:
Polish Journal of Chemical Technology; 2022, 24, 2; 42--49
1509-8117
1899-4741
Pojawia się w:
Polish Journal of Chemical Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Assessment of chosen musical competences of kindergarten teachers as an employment criterion
Autorzy:
Wilk, Kamil
Huk, Tomasz
Powiązania:
https://bibliotekanauki.pl/articles/2012188.pdf
Data publikacji:
2015-06-30
Wydawca:
Wydawnictwo Adam Marszałek
Tematy:
kindergarten teacher
musical competences
competence evaluation
child
employment
Opis:
The importance of music in the general development of kindergarten children implies that teachers providing education, including music education, should be equipped with elaborate musical skills that, as might be assumed, should become a vital element taken into consideration during preschool teacher interviews. Research conducted in the Silesian region over the years 2014-2015 shows that the surveyed directors of kindergartens view musical skills, in most cases, as an essential supplement to other competences of teachers, among which the ability to play a melodic instrument and vocal skills are, in their opinion, the most important musical competences. The majority of directors only review documents confirming such competences, whereas almost a quarter of the surveyed participants admit to not verifying musical competences of future kindergarten teachers; the surveyed individuals claim, most frequently, that kindergarten teachers are sufficiently prepared to play a role of musical educators for small children, and that kindergarten teachers, instead of specialist musicians, should implement the content stipulated in the core curriculum. What is more, no statistically significant differences between respondents from urban and rural environments were identified.
Źródło:
The New Educational Review; 2015, 40; 222-232
1732-6729
Pojawia się w:
The New Educational Review
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wielowymiarowa Analiza Zmian Demograficznych W Polsce W Świetle Koncepcji Zrównoważonego Rozwoju
Multivariate Data Analysis of Demographic Change in Poland in the Light of Sustainable Development Concept
Autorzy:
Wilk, Justyna
Bartłomowicz, Tomasz
Powiązania:
https://bibliotekanauki.pl/articles/418254.pdf
Data publikacji:
2012
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
sustainable development
demographic changes
ageing society
linear ordering
multivariate data analysis
Opis:
Sustainable development assumes improvement in the quality of living of present and future generations by achieving social, economic and environmental balance. Demographic changes play a significant role in this process due to their long-term impact on social and economic outcomes. The population of Poland is relatively young in comparison to other EU members but it is ageing very rapidly. This demographic process raises challenges for social policy, which include changes in the quality of life of the elderly population. The aim of the paper is to compare Polish voivodships (NUTS-2 territorial units) with respect to main features of both the demographic change and of economic situation of population aged 55 and over. We use selected indicators characterizing the demographic situation of the ageing Polish population, as well as the financial and occupational status of the elderly. Based on these indicators, we calculate synthetic measures of development. The results enable us to evaluate the demographic situation of Polish regions as well as distinguish main trends of the changes.
Źródło:
Studia Demograficzne; 2012, 162, 2; 55-86
0039-3134
Pojawia się w:
Studia Demograficzne
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Zjawisko flippingu na polskim rynku mieszkaniowym
Flipping on the Polish housing market
Autorzy:
Czerniak, Adam
Milewska-Wilk, Hanna
Bojęć, Tomasz
Powiązania:
https://bibliotekanauki.pl/articles/2197276.pdf
Data publikacji:
2021
Wydawca:
Kancelaria Sejmu. Biuro Analiz Sejmowych
Tematy:
house flipping
housing market in Poland
house prices
macroeconomic stability
Opis:
In this article the authors analyse the rise of house flipping in Poland in recent years. Firstly, drawing on the findings from desk research and qualitative inquiries, they describe how state-of-the-art flipping transactions are performed and financed. Secondly, with the use of a large microdata panel of housing transactions from eight major cities over the 2006–2020 period, the size and the main characteristics of house flipping in Poland are analysed. According to the findings, the share of flips in housing transactions gradually increased between 2016 and 2020, reaching on average 5.9% and – in some smaller cities with a shallow primary market – even double-digit shares. This is an alarming result, as such high flippers’ activity characteries periods of housing booms and may signal an overvaluation of prices.
Źródło:
Studia BAS; 2021, 2(66); 195-213
2080-2404
2082-0658
Pojawia się w:
Studia BAS
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Trends of economic development of Warsaw and their spatial implications
Autorzy:
Grochowski, Mirosław
Pieniążek, Marek
Wilk, Waldemar
Zegar, Tomasz
Miłaszewska, Małgorzata
Powiązania:
https://bibliotekanauki.pl/articles/2032518.pdf
Data publikacji:
2006-06-01
Wydawca:
Uniwersytet Warszawski. Wydział Geografii i Studiów Regionalnych
Tematy:
Warsaw
economic development
economic structure
distribution of economic entities
Opis:
The article presents trends of change in Warsaw's economic structure and their influence upon the formation of the city's functional and spatial structure. Using the latest data on the employment structure and kinds of economic entities and their distribution, an attempt has also been made to determine the degree of absorption of the city economy by pro-development activities. On the basis of experiences of other European cities activity types indicating the existence of development trends in the city economy (pro-development activities) were chosen. Next, changes in the number of economic entities in these areas in 1988-2004 were analyzed. Research on the distribution of economic entities in Warsaw is based upon data from the REGON register.
Źródło:
Miscellanea Geographica. Regional Studies on Development; 2006, 12; 225-231
0867-6046
2084-6118
Pojawia się w:
Miscellanea Geographica. Regional Studies on Development
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The analysis of distribution of the reaction mixture in ammonia oxidation reactor
Autorzy:
Moszkowski, Bartosz
Wajman, Tomasz
Sobczak, Krzysztof
Inger, Marek
Wilk, Marcin
Powiązania:
https://bibliotekanauki.pl/articles/779139.pdf
Data publikacji:
2019
Wydawca:
Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
Tematy:
Nitric acid
ammonia oxidation reactor
flow distribution
CFD simulation
Opis:
This article describes the influence of various design modifications of the ammonia oxidation reactor operating in nitric acid plant TKIV in Kędzierzyn-Koźle on flow distribution of an air-ammonia mixture. The CFD (Computational Fluid Dynamics) simulations of turbulent flow were carried out with SST k-ω turbulence model to close the system of RANS (Reynolds Averaged Navier-Stokes) equations. The simulation results show that the properly selected perforated plate screen and the conical diffuser ensure uniform flow of gas on the ammonia oxidation catalysts and on the catalysts for nitrous oxide decomposition. It was proved experimentally achieving uniform temperature of nitrous gases in different locations under the catalytic gauzes and high efficiency of ammonia oxidation and nitrous oxide decomposition.
Źródło:
Polish Journal of Chemical Technology; 2019, 21, 1; 9-12
1509-8117
1899-4741
Pojawia się w:
Polish Journal of Chemical Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Application Of Local Indicators For Categorical Data (LICD) In The Spatial Analysis Of Economic Development
Autorzy:
Pietrzak, Michał B.
Wilk, Justyna
Bivand, Roger S.
Kossowski, Tomasz
Powiązania:
https://bibliotekanauki.pl/articles/633087.pdf
Data publikacji:
2014-12-01
Wydawca:
Uniwersytet Łódzki. Wydawnictwo Uniwersytetu Łódzkiego
Tematy:
join-count test
spatial dependence
local indicators of spatial association (LISA)
exploratory spatial data analysis (ESDA)
economic development
taxonomic analysis
Opis:
The paper makes an attempt to apply local indicators for categorical data (LICD) in the spatial analysis of economic development. The first part discusses the tests which examine spatial autocorrelation for categorical data. The second part presents a two-stage empirical study covering 66 Polish NUTS 3 regions. Firstly, we identify classes of regions presenting different economic development levels using taxonomic methods of multivariate data analysis. Secondly, we apply a join-count test to examine spatial dependencies between regions. It examines the tendency to form the spatial clusters. The global test indicates general spatial interactions between regions, while local tests give detailed results separately for each region. The global test detects spatial clustering of economically poor regions but is statistically insignificant as regards well-developed regions. Thus, the local tests are also applied. They indicate the occurrence of five spatial clusters and three outliers in Poland. There are three clusters of wealth. Their development is based on a diffusion impact of regional economic centres. The areas of eastern and north western Poland include clusters of poverty. The first one is impeded by the presense of three indiviual growth centres, while the second one is out of range of diffusion influence of bigger agglomerations.
Źródło:
Comparative Economic Research. Central and Eastern Europe; 2014, 17, 4; 203-220
1508-2008
2082-6737
Pojawia się w:
Comparative Economic Research. Central and Eastern Europe
Dostawca treści:
Biblioteka Nauki
Artykuł
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