835 citations
- National Interuniversity Consortium for the Physical Sciences of MatterIT56 papers
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5 papers · 1 filter
Noise Induced Phenomena in Lotka-Volterra Systems
B. Spagnolo, A. Fiasconaro, D. Valenti
We study the time evolution of two ecosystems in the presence of external noise and climatic periodical forcing by a generalized Lotka-Volterra (LV) model. In the first ecosystem,…
Time Evolution of the Microwave Second-Harmonic Response of MgB2 Superconductor
A. Agliolo Gallitto, M. Li Vigni, G. Vaglica
We report on transient effects in the microwave second-order response of two ceramic MgB2 samples. The time evolution of the second-harmonic signal is investigated for about 500 s…
Fluxon dynamics by microwave surface resistance measurements in MgB2
A. Agliolo Gallitto, M. Bonura, S. Fricano +2
Field-induced variations of the microwave surface resistance, Rs(H), have been investigated in high-density ceramic MgB2. At low temperatures, several peculiarities of the Rs(H) cu…
Time evolution of the microwave second-order response of YBaCuO powder
A. Agliolo Gallitto, I. Ciccarello, C. Coronnello +1
Transient effects in the microwave second-order response of YBaCuO powder are investigated. The time evolution of the second harmonic signal has been measured for about 300 s after…
"Algebraic truths" vs "geometric fantasies": Weierstrass' Response to Riemann
Umberto Bottazzini
In the 1850s Weierstrass succeeded in solving the Jacobi inversion problem for the hyper-elliptic case, and claimed he was able to solve the general problem. At about the same time…