Temat: E10 - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Memory Properties of Non-Fully Interconnected Neural Network
Autorzy:: Kosiński, R. A.
Zagórski, A.
Powiązania:: https://bibliotekanauki.pl/articles/1931636.pdf
Data publikacji:: 1994-05
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 87.10.+e
Opis:: A model of a neural network consisting of two states neurons with the number N of (symmetric) synaptic connections per neuron treated as a variable was investigated numerically. Hebb's rule was used for storing uncorrelated patterns in the network. A maximal number of such patterns, which can be effectively retrieved by the network and the process of deterioration of the memory, is examined as a function of the number of synaptic connections per neuron. The influence of the number of neurons in the network as well as boundary conditions for the storage capacity of the network are discussed.
Źródło:: Acta Physica Polonica A; 1994, 86, 3; 427-433
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 2.

Tytuł:: X-Ray Diffraction and NMR Studies on Mixtures of Non-Ionic Surfactant (C$\text{}_{12}$EO$\text{}_{2}$) and Phospholipids (POPC)
Autorzy:: Funari, S. S.
di Vitta, C.
Rapp, G.
Powiązania:: https://bibliotekanauki.pl/articles/1964131.pdf
Data publikacji:: 1997-05
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 87.10.+e
Opis:: We studied the temperature and concentration dependence of the POPC/C$\text{}_{12}$EO$\text{}_{2}$/water ternary system and identified and characterized the different phases occurring. The thermal behaviour is slightly dependent on the surfactant to lipid molar ratio R$\text{}_{s}\text{}_{/}\text{}_{l}$ . At low surfactant content the behaviour is similar to the binary lipid/water system. Similarly at low lipid contents the system behaves similarly to the surfactant/water mixture. However, at molar ratios R$\text{}_{s}\text{}_{/}\text{}_{l}$ between 2 and 3 a new hexagonal phase forms which is peculiar to the mixture. $\text{}^{2}$H NMR measurements indicated the existence of a lamellar phase containing also curved surfaces additional to the flat ones. The surface area per surfactant molecule was calculated to 0.23 nm$\text{}^{2}$ which is in good agreement with the cross-section of a paraffinic chain.
Źródło:: Acta Physica Polonica A; 1997, 91, 5; 953-960
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 3.

Tytuł:: Chaotic Dynamics of a Linear Chain of Periodically Stimulated Neurons with Random Synaptic Connections
Autorzy:: Kosiński, R. A.
Krawiecki, A.
Sukiennicki, A.
Powiązania:: https://bibliotekanauki.pl/articles/2027444.pdf
Data publikacji:: 2001-07
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 87.10.+e
05.45.-a
Opis:: Dynamics of a neural network in the form of a linear chain of artificial neurons S$\text{}_{i}$∈(-1,1) influenced by an external sinusoidal stimulation is investigated as a function of the range k of synaptic connections with random values. Time evolution of the network is periodic for small k, however, clusters of neurons oscillating with a triple period of external stimulation, with quasiperiodic or with chaotic time evolution may occur. For increasing k the number and width of the chaotic clusters increase and for k >4 the chaotic motion occurs in the whole network. A route to chaos in the considered system is discussed.
Źródło:: Acta Physica Polonica A; 2001, 100, 1; 89-99
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 4.

Tytuł:: Braids for Pretzel Knots
Autorzy:: Suffczyński, M.
Powiązania:: https://bibliotekanauki.pl/articles/2014522.pdf
Data publikacji:: 2000-12
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 87.10.+e
36.20.-r
87.15.-v
02.40.-k
Opis:: The words of braid closures for the pretzel knots, in particular the twist knots relevant to molecular supercoils in biochemistry, are recorded in a standardized form, which enables one to see the regular pattern of the words, and thus to write the braid words representing pretzel knots for general values of the crossing number.
Źródło:: Acta Physica Polonica A; 2000, 98, 6; 663-671
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

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