The authors made an investigation on non-profit organization in Xiaogan city and the results indicated that there are rarely real civil non-profit organizations in our country,and need to be developed.

This paper deals with injective semimodules and get some good results,such as semimodule E is injective semimodule if and only if functor Hom preserve proper exact sequence.

This paper gives the notion of i-injective semimodule at first and discusses the equivalent characters of i-injective semimodules such as the equivalence of i-injective semimodule and functor which preserve all proper exact sequences.

We studied the properties of the projective cone in tensor vector space defined by Barker.

A Comparative Study of Xizhenzhengda and Muzi s Solutions to Problems;