positive type function

In this paper a nonautonomous food chain system with ⅱ type functional response and graze is considered. The existence, uniqueness and global asymptotic stability of a positive periodic solution for the system are proved by the comparison theorem, fixed point theorem and V-function method.

讨论有放养的第类功能性反应的捕食链非自治系统，应用比较定理和不动点定理及V函数法，在一定条件下证明该系统存在唯一的全局渐近稳定的正周期解。

In the process of building e-government, should be a positive function of government by the management model to a service-type functions.

在电子政务的建设的过程中，应积极的实现政府由管理型职能向服务型职能转变。

In this paper, the type function of zero order and finite positive order of hyperspherical series is investigated. The relationship between its order, maximal module and the type of type function is established.

研究了零阶与有限正阶超球级数的型函数，得出了超球级数的阶、最大模与型函数所对应的型之间的关系式。