Abstract The dynamics of a diffusive predator-prey system with prey refuge and gestation delay is investigated Bouncy Ball in this paper.For a non-delay system, global stability, Turing instability and Hopf bifurcation are studied.For a delay system, time delay induced instability and Hopf bifurcation are discussed.By the theory of normal form and
Aim.The paper Headwear presents the analysis of the political and socio-economic situation in the Republic of Dagestan, North-Caucasian Federal District of the Russian Federation for the period from 2006 to 2010.Discussion.We discuss the interrelation of the political situation and socio - economic stability at the national level.We also identified
Thirteen species of spiders from four families were collected Limited Editions using pitfall traps in subnivean habitat in the foothills of Salair Mt.Range, eastern Altai Krai.Linyphiidae predominate in the material.Agroeca limnicunae (McCook, 1884), previously known from Yenisei River in Middle Siberia through Cisokhotia and Alaska to New Jersey (