The paper presents that the opportunity cost will be reflected not only in the phase of human capital investment but also in the human capital income stage,and indicates the essence of high-paying threat with the opportunity cost in the stage of human capital income as well.

The Threat of Influenza Virus H5N1 to Wildlife;

Formal models of threat and its evaluation in argumentation-based negotiation of Agent;

STRIDE critical threat modeling using in designing certificate authority;

Change and threats of coastal wetlands in Shenzhen;

At present,the wetlands in coastal area are subject to some serious threats such as reclamation,pollution and over-exploitation of natural resources.

Based softswitch own characteristics and operators of operating experience, this article analyzes and discusses softswitch network security menace and requirement.

By starting with the important management of network safety, the menace of network safety is introduced as well as the aim of safety management.

This provision in criminal Law is made on the basis of the theory that the conduct of violence and menace can t be carried out by the unit,but this theory isn t insisted on in crime of smuggling and coercing trade,etc.

This paper expatiated the safe concept in organism; Introduce the safe in organism suffers foreign to threaten;Put forward the safe measure in organism in our country.

All of these threaten the security of financial data.

In order to improve the extension of transaction and make the operation between pear and pear easily on the IP network, The NGN put forward an very opened network structure, which cause more and more threatens.

On the basis of sustainable development, the authors analyzed the main ecological threat such as the reduction of wetland resources, the declining of wetland functions, the loss of wetland biodiversity, the intensification of environmental pollution and so on, which wetlands are faced with in China, and put forward the countermeasures of protection finally.