Autor: Pelczar, P. - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Analysis of procedures implemented by emergency medical teams in the event of cardiac arrest in the city of Lublin, Poland
Autorzy:: Chemperek, E.
Pelczar, J.
Naylor, K.
Nowicki, G.
Rzonca, P.
Mikula-Mazurkiewicz, A.
Prystupa, A.
Powiązania:: https://bibliotekanauki.pl/articles/3018.pdf
Data publikacji:: 2014
Wydawca:: Instytut Medycyny Wsi
Tematy:: procedure
emergency medical team
cardiac arrest
emergency medicine
cardiopulmonary resuscitation
Lublin city
Polska
Źródło:: Journal of Pre-Clinical and Clinical Research; 2014, 08, 1
1898-2395
Pojawia się w:: Journal of Pre-Clinical and Clinical Research
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Analysis of Object Location Accuracy for iBeacon Technology based on the RSSI Path Loss Model and Fingerprint Map
Autorzy:: Grzechca, D. E.
Pelczar, P.
Chruszczyk, L.
Powiązania:: https://bibliotekanauki.pl/articles/226970.pdf
Data publikacji:: 2016
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: Bluetooth
indoor environment
navigation
radio links
radiowave propagation
Opis:: This paper presents analysis of object location accuracy of a mobile device on the basis of the iBeacon technology. The research starts with radio signal strength indicator analysis along the corridor in order to create a path loss model for iBeacon. Two cases are taken into account: line of sight and non-line of sight for model creation. For both cases two tests: Chi-square, Shapiro-Wilk have been performed. It has also been checked if the HCI (Host Controller Interface) is a source with a memory. Acquired data have been filtered with different type of filters, e.g. median, moving average and then compared. Next, the authors evaluated the indoor positioning trilateration algorithms with the use of created model for exemplary hall. The RSSI map (radiomap) was created and the logarithm propagation model was designed. The logarithmic model estimated distance with average error 1.09m for 1 – 9m and 1.75m for 1-20m and after trilateration, the positions with average error 2.45m was achieved. A statistical analysis for acquiring data led to the final conclusion which enhanced knowledge about positioning based on the popular iBeacon technology.
Źródło:: International Journal of Electronics and Telecommunications; 2016, 62, 4; 371-378
2300-1933
Pojawia się w:: International Journal of Electronics and Telecommunications
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: The Effect of BN or SiC Addition on PEO Properties of Coatings Formed on AZ91 Magnesium Alloy
Autorzy:: Pelczar, D.
Długosz, Piotr
Darłak, P.
Szewczyk-Nykiel, Aneta
Nykiel, Marek
Hebda, Marek
Powiązania:: https://bibliotekanauki.pl/articles/2048800.pdf
Data publikacji:: 2022
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: composite oxide film
abrasive wear resistance
corrosion behavior
scratch resistance
protective coatings
Opis:: Currently, due to the economic and ecological aspects, light alloys are increasingly important construction material, in particular in the transport industry. One of the popular foundry magnesium alloys is the alloy AZ91, which among others due to mechanical properties and technological features, is used, for example, for light structural parts. The paper presents the results of research on modification of the AZ91 alloy surface layer in the plasma electrolytic oxidation process. The change of usable properties of the produced coatings was obtained by introducing additions of silicon carbide or boron nitride. The thickness and hardness of the protective layers produced, resistance to scratches and corrosion resistance were determined. Moreover, the friction coefficient of the coating-steel pair was investigated. The quality of the connections made between the coating and the substrate, i.e. the magnesium alloy, was also evaluated. The results obtained for coatings with silicon carbide or boron nitride additives were always compared to the results obtained for unmodified samples. On the basis of the obtained results, it was shown that the introduction of boron nitride additive to the AZ91 alloy coating produced in the plasma electrolytic oxidation process significantly improves the resistance to: (i) corrosion and (ii) abrasive wear of the coating.
Źródło:: Archives of Metallurgy and Materials; 2022, 67, 1; 147-154
1733-3490
Pojawia się w:: Archives of Metallurgy and Materials
Dostawca treści:: Biblioteka Nauki

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