5 Result(s)
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Article
P. Ricciardi
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Article
The effect of epidemics on genetic evolution
Mathematical models of a vector-borne infectious disease acting on a host population consisting of three genotypes which differ in susceptibility to, recovery from, and death due to the disease are presented a...
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Article
The effects of seasonal fluctuations on an open access fishery problem
The Gordon-Schaefer model with periodic coefficients is studied. A suitable real parameter d is found such that positive periodic solutions exist iff d > 0. No uniqueness result may be proved as shown with an exa...
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Article
Lyapunov functions for a generalized Gause-type model
Lyapunov functions are given to prove the global asymptotic stability of a large class of predator-prey models, including the ones in which the intrinsic growth rate of the prey follows the Ricker-law or the O...
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Article
Assessment of the COOP charts with and without pictures in a Swiss population
Objectives: This study aimed to assess the validity of COOP charts in a general population sample, to examine whether illustrations contribute to instrument validity, and to establish general population norms. M...
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Article
Non-linear oscillator models for the X-ray bursting of the microquasar GRS 1915+105
The microquasar GRS 1915+105, exhibits a large variety of characteristic states, according to its luminosity, spectral state, and variability. The most interesting one is the so-called ρ-state, whose light curve ...
