Performance of network should be improved according to self-adapt based flow control mechanism of wireless sensor network, which calculates and judges virtual price in congestion nodes at first, and sends virtual price to sending nodes, then controls flow in send.

To solve the problems of selecting optimal processing parameters and analyzing the feasibility of processing technology for rapid prototyping,a dummy appraisal method of rapid prototyping based on the SolidWorks was proposed.

Virtual price in the course of selecting cars for the departing trains and method for evaluating price are presented.

The core concept of virtual economy is virtual price.

The demand for this part of money shows the movement of proliferation of fictitious value.

This paper clarifies the nature of financial assets, discusses the fictitious value and market price of financial assets from the aspects of quality and quantity, and carry out Marxs labor theory of value into financial assets.

As a kind of special value,fictitious value has special features such as fictitious,uncertain,convertible.

This paper explains the virtual value of money on the basis of the value or cost of commodities with the current international monetary system as the point of departure.