and Applied Analysis 3 where g x ax O x 1 , m ≥ 2 system 1.8 is a generalized Liénard system . Stróżyna and Żoła̧dek 17 proved that this formal normal form can be achieved through an analytic change of variables. Thus, if 1.4 has a center or focus at the origin, then it can be changed into 1.8 with g x x2n−1 a2n−1 O x , n ≥ 2, a2n−1 > 0. 1.9 According to 11 under 1.9 by a change of variables x a...

We investigate responses of a model for intracellular Ca2+ oscillations to external pulsatile forcing in the presence of additive Gaussian noise. Our results show that noise makes the system less susceptible to external forcing and thus enhances robustness of Ca2+ oscillations. The results can be well explained by the local divergence of limit cycles in the phase space.  2003 Elsevier B.V. All...

We investigate the possibility that the large mixing of neutrinos is induced by their large coupling to a five-dimensional bulk neutrino. In the strong coupling limit the model is exactly soluble. It gives rise to an oscillation amplitude whose squared-mass difference is independent of the channel, thus making it impossible to explain both the solar and the atmospheric neutrino oscillations sim...

this study examined the relationship between market monitoring cost consist the business disclosure index, the index of perception of corruption, rule of law and regulations quality, and also pointed out the technology index and exercise price limit rules that are in stock. in this research the relationship between the above indicators to price limit rules applied during the period 2005-2010 in...