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Wyszukujesz frazę "Janusz, Marcin" wg kryterium: Autor


Tytuł:
Badania archeologiczne Rynku w Bieruniu Starym, woj. śląskie
Archeological excavations of the market place in Bieruń Stary
Autorzy:
Andrzejewski, Aleksander
Lewandowski, Marcin
Pietrzak, Janusz
Powiązania:
https://bibliotekanauki.pl/articles/941791.pdf
Data publikacji:
2004
Wydawca:
Uniwersytet Łódzki. Wydawnictwo Uniwersytetu Łódzkiego
Opis:
Archaeological excavations on the area of the market place in Bieruń Stary were next stage of researches intended to lead to modernisation and rebuild of the market surface as well as rebuild and partial exchange of the terrain’s infrastructure. As a result of an agreement between a building company and the Preservation Service, after having informed the Investor, the Town and Commune Council in Bieruń Stary, seven exploratory units of total 200 sq m have been marked out. They were located in places where earlier radar and electromagnetic investigations of the ground made with the SIR radar indicated disturbances in stratification. It suggested that archaeological features occurred there. The disturbances were interpreted as remains of a town hall, scales, other market buildings and surfaces hardening the market area (covering with wood, stone pavements). The excavations carried out on the market of Bieruń Stary have yielded considerable collection of artefacts. Together 5875 items have been found; the most numerous group (4565) was constituted by fragments of clay vessels. The frequency of each collection of artefacts in different exploratory units was various and the whole material can be treated as strongly shattered and secondary mixed to a great extent. The artefacts quite regularly saturated stratification of all the units except unit VII where barely 144 specimens have been found. As a result of the excavations it has been stated that in the areas in point there are no remains that could be connected with the town functioning from its location at the end of the 14th till the 17th century. It is possible that the town originally had a different location and different directions of development and no sooner than after the great fire in 1677 a new town regulation took place. Great probability of this hypothesis is well founded by the fact that the oldest traces of the market usage only come from the 2nd half of the 17th century. Also all the discovered relics of wooden buildings are dated to the years immediately after the fire. As far as inter-market buildings are concerned, in the northern part of the market (in a place indicated as a result of the radar investigation) relics of the south-western comer of a building have been revealed. We believe that, with great probability, it can be assumed that it is a remnant of the town scales. In the terrain it manifests in a layer of broken stone being a foundation of inconsiderably preserved comer wall beam. The relic can be preliminarily dated to the 19th century. Unfortunately no other remains of the inter-market building area have been found although their occurrence is suggested by the SIR radar investigation. Similarly, relics of the stone paved road have not been found. Only the presence of earthen layers from the 2nd half of the 17th - the beginning of the 20th century. In the central part of the market, in the place suggested by the SIR investigation, relics of the town hall have not been found. To be quite truthful, there are some relics of an archaeological object, but its fragmentary state excludes any far-reaching conclusions. We think that there is an interesting situation in the south-western frontage of the market where relics of its older, southern frontage have been registered. It should be dated to the period from the 2nd half of the 17th to the end of the 18th century. It was shifted about 13 metres north of the present frontage. A wooden pavement once coming under the arcades has been registered, which is showed by relics of posts placed in the surface of the pavement. Before padding beams were laid, the surface of the market had been strengthened by fascine. Whereas after the liquidation of the original building line and enlargement of the market to its present size its surface (at least in the region under consideration) was paved with broken limestone. It probably happened at the end of the 18th or at the beginning of the 19th century. In the surface the presence of a gutter (a sewer canal) made of different kinds of coniferous wood has been stated. At the beginnings of the 20th century the rebuild of the market surface took place. In the area under investigation it was carefully paved with broken limestone, what undoubtedly contributed to the town’s aesthetics, but unfortunately at the opportunity destroyed the older layers.
Źródło:
Acta Universitatis Lodziensis. Folia Archaeologica; 2004, 24
0208-6034
2449-8300
Pojawia się w:
Acta Universitatis Lodziensis. Folia Archaeologica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Cryptographically Strong Elliptic Curves of Prime Order
Autorzy:
Barański, Marcin
Gliwa, Rafał
Szmidt, Janusz
Powiązania:
https://bibliotekanauki.pl/articles/1844627.pdf
Data publikacji:
2021
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
Mersenne primes
elliptic curves
security requirements
search algorithm
Magma
Opis:
The purpose of this paper is to generate cryptographically strong elliptic curves over prime fields Fp, where p is a Mersenne prime, one of the special primes or a random prime. We search for elliptic curves which orders are also prime numbers. The cryptographically strong elliptic curves are those for which the discrete logarithm problem is computationally hard. The required mathematical conditions are formulated in terms of parameters characterizing the elliptic curves. We present an algorithm to generate such curves. Examples of elliptic curves of prime order are generated with Magma.
Źródło:
International Journal of Electronics and Telecommunications; 2021, 67, 2; 207-212
2300-1933
Pojawia się w:
International Journal of Electronics and Telecommunications
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Badania metaloznawcze mieczy z cmentarzyska z okresu rzymskiego w Czelinie, woj. Zachodniopomorskie
Metallurgy study on swords from the Roman period burial ground in Czelin, West Pomeranian Voivodeship
Autorzy:
Biborski, Marcin
Kaczanowski, Piotr
Stępiński, Janusz
Powiązania:
https://bibliotekanauki.pl/articles/440571.pdf
Data publikacji:
2015
Wydawca:
Muzeum Narodowe w Szczecinie
Tematy:
okres rzymski
miecze
typ Pompeje
typ Lachmirowice-Apa
typ Vimose-Illerup
Roman period
swords
Pompeii type
Lachmirowice-Apa type
Vimose-Illerup type
Opis:
Abstract: Results of the metallurgy study on three, two-edged swords from a cremation burial ground in Czelin, representing the Pompeii, Lachmirowice-Apa and Vimose-Illerup types indicate a variability in the material used as well as in technique of their production, and thus in the quality of the specimens. Two of them were made of a single piece of metal with low (specimen of the Lachmirowice-Apa type) or medium quality (specimen of the Pompeii type). A much higher level of craftsmanship is represented by the third sword of the Vimose-Illerup type, precisely forged from several pieces of diverse, high-quality material, representing the so-called pattern welding technique.
Źródło:
Materiały Zachodniopomorskie; 2014, 10; 133-157
0076-5236
Pojawia się w:
Materiały Zachodniopomorskie
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Jednostki Waffen SS 1939-1945
Autorzy:
Bryja, Marcin.
Ledwoch, Janusz.
Data publikacji:
1996
Wydawca:
Warszawa : "Militaria"
Tematy:
SS. Czwarty (IV) Korpus Pancerny SS 1944 r.
SS. Siódmy (VII) Korpus Pancerny SS 1944 r.
SS. Trzecia (3) Dywizja Pancerna "Totenkopf" SS 1944 r.
SS. Piąta (5) Dywizja Pancerna "Wiking" SS 1944 r.
SS. Dwudziesta Dziewiąta (29) Dywizja Grenadierów SS (Rosyjska nr 1) 1944 r.
SS jednostki 1933-1945 r.
Opis:
S. 42-49, Front wschodni 1944 r.
S. 93-94, IV. Korpus Pancerny SS.
S. 94, VII. Korpus Pancerny SS.
S. 99, 3. Dywizja Pancerna SS "Totenkopf".
S. 101-102, 5. Dywizja Pancerna SS "Wiking".
S. 120, 29. Dywizja Grenadierów SS (Rosyjska nr 1).
Dostawca treści:
Bibliografia CBW
Książka
Tytuł:
Analysis of Thermal Decomposition of Solid Rocket Propellants
Analiza rozkładu termicznego stałych paliw rakietowych
Autorzy:
Cegła, Marcin
Zmywaczyk, Janusz
Koniorczyk, Piotr
Powiązania:
https://bibliotekanauki.pl/articles/403608.pdf
Data publikacji:
2019
Wydawca:
Wojskowa Akademia Techniczna im. Jarosława Dąbrowskiego
Tematy:
solid rocket propellants
thermal decomposition analysis
activation energy
stałe paliwa rakietowe
analiza rozkładu termicznego
energia aktywacji
Opis:
The paper presents results of thermal decomposition analysis of selected solid rocket propellants. Homogeneous propellant PAC and heterogeneous propellant H2 were subjected to simultaneous thermal analysis with the use of NETZSCH STA 2500 Regulus device with five heating rates of 2.5, 5, 7.5, 10 and 15 K/min. The method combines TG, DTG and DTA analytical techniques in a single measurement. The aim of the conducted experiments was to study thermal decomposition of these energetic materials as well as to determine activation energy of the decomposition process and the preconditioning factor from the TG curves. The tested materials properties and chemical composition along with a brief description of the experimental procedure are described. The inverse procedure of calculating the activation energy, based on the Ozawa-Flynn-Wall model is described. Finally, the results of thermal decomposition of two tested solid rocket propellants are presented along with maximum decomposition rates and percentage of mass loss.
W pracy przedstawiono wyniki analizy termicznej dekompozycji wybranych stałych paliw rakietowych. Homogeniczne paliwo rakietowe PAC i heterogeniczne paliwo rakietowe H2 poddano badaniom za pomocą techniki jednoczesnej analizy termicznej przy użyciu urządzenia NETZSCH STA 2500 Regulus, wykorzystując pięć szybkości ogrzewania próbki wynoszących 2,5, 5, 7,5, 10 i 15 K/min. Wspomniana metoda łączy analizy TG, DTG i DTA w jednym pomiarze. Celem eksperymentów było zbadanie rozkładu termicznego tych materiałów energetycznych, a także określenie energii aktywacji procesu rozkładu i współczynnika przedwykładniczego z krzywych TG. Omówiono podstawowe właściwości oraz skład chemiczny badanych stałych paliw rakietowych, warunki prowadzenia eksperymentu oraz opisano procedurę odwrotną obliczania energii aktywacji termicznego rozkładu paliwa na podstawie krzywych TG, dla kilku szybkości ogrzewania próbki. Przedstawiono wyniki analizy termicznego rozkładu dwóch badanych stałych paliw rakietowych wraz z maksymalnymi współczynnikami dekompozycji i procentowym spadkiem masy, a także wyznaczone wartości energii aktywacji ich termicznej dekompozycji. Uzyskane w wyniku badań wyniki są istotne w doborze bezpiecznych warunków magazynowania i eksploatacji silników rakietowych napędzanych paliwem stałym.
Źródło:
Problemy Mechatroniki : uzbrojenie, lotnictwo, inżynieria bezpieczeństwa; 2019, 10, 2 (36); 43-54
2081-5891
Pojawia się w:
Problemy Mechatroniki : uzbrojenie, lotnictwo, inżynieria bezpieczeństwa
Dostawca treści:
Biblioteka Nauki
Artykuł

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