Informacja

Drogi użytkowniku, aplikacja do prawidłowego działania wymaga obsługi JavaScript. Proszę włącz obsługę JavaScript w Twojej przeglądarce.

Wyszukujesz frazę "Buda, A." wg kryterium: Autor


Wyświetlanie 1-4 z 4
Tytuł:
Diffusion paths between product life-cycles in the European phonographic market
Autorzy:
Jarynowski, A.
Buda, A.
Powiązania:
https://bibliotekanauki.pl/articles/206745.pdf
Data publikacji:
2016
Wydawca:
Polska Akademia Nauk. Instytut Badań Systemowych PAN
Tematy:
epidemiology modeling
social network analysis
cultural diffusion
music charts
Opis:
We have investigated the product life-cycles of almost 17 000 hit singles having appeared on the 12 biggest national phonographic markets in Europe including: Austria, Belgium, France, Germany, Ireland, Italy, Netherlands, Norway, Spain, Switzerland, Sweden, and the United Kingdom. We have considered weekly singles charts from the last 50 years (1966-2015) in each country. We analyzed the spread of hit singles popularity (chart topping) as an epidemiological process, taking place in various European countries. Popularity of the hit singles is contagious in the sense of moving from one country to another. Thus, we consider time delays between the initial hit single release and reaching the highest position on consecutive national singles charts. We create a directed network of countries, this network representing the transmission of the hit singles popularity between countries. This is obtained by simulating the most likely paths and picking up the most frequent links. A country of initial hit single release is considered as a source of infection. Our algorithm builds up the spanning trees by attaching new nodes. The probability of attachment depends on infectivity of previous nodes from the tree corresponding to their: 1) market size; 2) distance in time between the new node and the potential spreaders. Thus, we obtain a network of popularity spread with: a hub – the UK, a bridge – the Netherlands, and outliers – Italy and Spain. We have found a characteristic topology of hit singles popularity spread. On the top of this, the network of popularity spread has some typical properties of complex networks.
Źródło:
Control and Cybernetics; 2016, 45, 2; 225-237
0324-8569
Pojawia się w:
Control and Cybernetics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Network Structure of Phonographic Market with Characteristic Similarities between Artists
Autorzy:
Buda, A.
Jarynowski, A.
Powiązania:
https://bibliotekanauki.pl/articles/1400173.pdf
Data publikacji:
2013-03
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
89.65.Gh
05.45.-a
42.65.Sf
42.55.Px
Opis:
We investigate relations between bestselling artists in last decade on phonographic market and from perspective of listeners by using the Social Network Analyzes. Starting network is obtained from the matrix of correlations between the world's bestselling artists by considering the synchronous time evolution of weekly record sales. This method reveals the structure of phonographic market, but we claim that it has no impact on people who see relationship between artists and music genres. We compare "sale" (based on correlation of record sales) or "popularity" (based on data mining of the record charts) networks with "similarity" (obtained mainly from survey within music experts' opinion) and find no significant relations. We postulate that non-laminar phenomena on this specific market introduce turbulence to how people view relations of artists.
Źródło:
Acta Physica Polonica A; 2013, 123, 3; 547-552
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Mobile NMR for Analysis of Polyethylene Pipes
Autorzy:
Blümich, B.
Casanova, F.
Buda, A.
Kremer, K.
Wegener, T.
Powiązania:
https://bibliotekanauki.pl/articles/2043383.pdf
Data publikacji:
2005-07
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
81.05.Lg
82.35.Lr
76.60.-k
Opis:
NMR relaxometry is a suitable tool to determine the morphology of semi-crystalline polymers by its ability to discriminate between rigid, mostly crystalline and soft, usually amorphous material. The NMR-MOUSE$\text{}^{®}$ (nuclear magnetic resonance mobile universal surface explorer) was explored in this work to supply morphological data of poly(ethylene) pipes nondestructively. PE-100 pipes were investigated in the new state, after squeezing them flat, and after annealing well below the glass temperature. Furthermore, the change in morphology induced by a pressure load from the inside and a point load from the outside was investigated as a function of depth, and the morphology change across a welding line was imaged. A shear-band was detected by destructive high-field NMR imaging in an area of severe deformation of a pipe, where an anomalous depths profile was observed by the NMR-MOUSE. These results demonstrate that the NMR-MOUSE is a suitable tool for non-destructive state assessment of polymer pipes on the basis of laboratory reference data.
Źródło:
Acta Physica Polonica A; 2005, 108, 1; 13-23
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Clustering of Staphylococcus aureus bovine mastitis strains from regions of Central-Eastern Poland based on their biochemical and genetic characteristics
Autorzy:
Puacz, E.
Ilczyszyn, W.M.
Kosecka, M.
Buda, A.
Dudziak, W.
Polakowska, K.
Panz, T.
Bialecka, A.
Kasprowicz, A.
Lisowski, A.
Krukowski, H.
Cuteri, V.
Miedzobrodzki, J.
Powiązania:
https://bibliotekanauki.pl/articles/31348.pdf
Data publikacji:
2015
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Opis:
Staphylococcus aureus strains were isolated from mastitic milk of cows with infected mammary glands. The animals were living in 12 different farms near Lublin, in Central-Eastern Poland. A biochemical identification method based on enzymatic assay was performed, followed by haemolytic and proteolytic tests. PCR-RFLP targeted on the gap gene allowed the genetic identification of strains at the species level and verified phenotypic identification results. A molecular typing method using triplex PCR was performed to recognize the genetic similarity of the analyzed strains. DNA microar-ray hybridization (StaphyType, Alere Technologies) was used for detection of antibiotic resistance and virulence associated markers. The results obtained indicate high genetic similarity in strains isolated from the same sites. High genetic similarities were also detected between strains isolated from cows from different farms of the same region. A slightly lower similarity was noted however, in strains from various regions indicating that the strains are herd specific and that the cow's infections caused by S. aureus were of a clonal character. In 21 representative isolates selected for DNA-microarray testing, only fosfomycin (fosB) and penicillin resistance markers (blaZ, blaI, blaR) were detected. The presence of genes coding for haemolysins (lukF, lukS, hlgA, hla, hld, hlb), proteases (aur, sspA, sspB, sspP), enterotoxins (entA, entD, entG, entI, entJ, entM, entN, entO, entR entU, egc-cluster), adhesins (icaA, icaC, icaD, bbp, clfA, clfB, fib, fnbA, map, vwb) or immune evasion proteins (scn, chp, sak) was common and, with exceptions, matched triplex PCR-defined clusters.
Źródło:
Polish Journal of Veterinary Sciences; 2015, 18, 2
1505-1773
Pojawia się w:
Polish Journal of Veterinary Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-4 z 4

    Ta witryna wykorzystuje pliki cookies do przechowywania informacji na Twoim komputerze. Pliki cookies stosujemy w celu świadczenia usług na najwyższym poziomie, w tym w sposób dostosowany do indywidualnych potrzeb. Korzystanie z witryny bez zmiany ustawień dotyczących cookies oznacza, że będą one zamieszczane w Twoim komputerze. W każdym momencie możesz dokonać zmiany ustawień dotyczących cookies