Autor: Kułakowski, M. - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: On a Combinatorial Aspect of Fashion
Autorzy:: Krawczyk, M.
Kułakowski, K.
Powiązania:: https://bibliotekanauki.pl/articles/1400175.pdf
Data publikacji:: 2013-03
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 89.65.-s
07.05.Tp
Opis:: Simulations are performed according to the Axelrod model of culture dissemination, with modified mechanism of repulsion. Previously, repulsion was considered by Radillo-Diaz et al. as dependent on a predefined threshold. Here the probabilities of attraction and repulsion are calculated from the number of cells in the same states. We also investigate the influence of some homogeneity, introduced to the initial state. As the result of the probabilistic definition of repulsion, the ordered state vanishes. A small cluster of a few percent of population is retained only if in the initial state a set of agents is prepared in the same state. We conclude that the modelled imitation is successful only with respect to agents, and not only their features.
Źródło:: Acta Physica Polonica A; 2013, 123, 3; 560-563
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 2.

Tytuł:: If Others Jump to the Queue Front, How Long I Will Wait?
Autorzy:: Krawczyk, M.
Gronek, P.
Nawojczyk, M.
Kułakowski, K.
Powiązania:: https://bibliotekanauki.pl/articles/1402647.pdf
Data publikacji:: 2015-03
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 02.50.Tt
05.40.Fb
89.65.-s
Opis:: Two models of a queue are proposed: a human queue and two lines of vehicles before a narrowing. In both models, a queuer tries to evaluate his waiting time, taking into account the delay caused by intruders who jump to the queue front. As the collected statistics of such events is very limited, the evaluation can give very long times. The results provide an example, when direct observations should be supplemented by an inference from the context.
Źródło:: Acta Physica Polonica A; 2015, 127, 3A; A-95-A-98
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 3.

Tytuł:: The Heaping Effect in the Survey Data on the Number of Friends
Autorzy:: Nawojczyk, M.
Stojkow, M.
Żuchowska-Skiba, D.
Krawczyk, M.
Kułakowski, K.
Powiązania:: https://bibliotekanauki.pl/articles/1029538.pdf
Data publikacji:: 2018-06
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: social systems
random walk
exit time
incomplete knowledge
Opis:: The number of acquaintances is relevant for modeling social networks. Here we consider the data on the declared number of friends, as collected in 2000, 2007 and 2015 from Polish respondents above the age of 50. We demonstrate that the answers on the number of friends show sharp maxima at 10, 15, 20 and sometimes 30, which accompany a broader peak between 0 and 8. These results do not change qualitatively with sex and age of the respondents. The effect, known as data heaping, can be detected as a deviation from the Benford law.
Źródło:: Acta Physica Polonica A; 2018, 133, 6; 1417-1420
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 4.

Tytuł:: Naming boys after U.S. presidents in 20th century
Autorzy:: Kułakowski, K.
Kulczycki, P.
Misztal, K.
Dydejczyk, A.
Gronek, P.
Krawczyk, M.
Powiązania:: https://bibliotekanauki.pl/articles/1075471.pdf
Data publikacji:: 2016-05
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 89.20.-a
89.65.Cd
Opis:: This paper deals with the popularity of given names in the United States, for the period 1885-2009. Based on the data obtained from the website of U.S. Social Security Administration, it was demonstrated that the fashion of naming babies after the incumbent American president passed away in the '60s. At the same time, however, examples were given, mainly concerning celebrities, after whom babies are still named. The above theses were strengthened with the aid of quantitative data analysis by constructing an index dedicated to the specifics of the task under investigation. The obtained results were discussed in the terms of the rally effect and of the Simmel theory of fashion.
Źródło:: Acta Physica Polonica A; 2016, 129, 5; 1038-1044
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 5.

Tytuł:: Strategies in Crowd and Crowd Structure
Autorzy:: Gawroński, P.
Malarz, K.
Krawczyk, M.
Malinowski, J.
Kupczak, A.
Sikora, W.
Kułakowski, K.
Wąs, J.
Kantelhardt, J.
Powiązania:: https://bibliotekanauki.pl/articles/1400168.pdf
Data publikacji:: 2013-03
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 02.50.Le
89.65.-s
05.45.-a
Opis:: In an emergency situation, imitation of strategies of neighbours can lead to an order-disorder phase transition, where spatial clusters of pedestrians adopt the same strategy. We assume that there are two strategies, cooperating and competitive, which correspond to a smaller or larger desired velocity. The results of our simulations within the Social Force Model indicate that the ordered phase can be detected as an increase of spatial order of positions of the pedestrians in the crowd.
Źródło:: Acta Physica Polonica A; 2013, 123, 3; 522-525
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

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