On the basis of an analysis of the influence of IT development on the audit technologies, this paper puts forward the proposal of investigating and analyzing original data by means of on-line audit to raise auditing efficiency, decrease auditing risk and ensure the auditing quality.

The state audit should use real-time online audit at present,and it can enhance the audit working efficiency and the effect.

A new method of on-line calculation of heat efficiency of circulating fluidized bed boiler(CFB Boiler) was proposed.

A new method of on-line calculation of heat efficiency of boiler was proposed based on several improvements in calculating heat loss.

An on-line estimation of the specific growth rate in aerobic fermentation process is thus proposed by measuring CER (carbon dioxide excretion rate) and then selecting the important parameters in the model through optimization.

In order to overcome the difficulties in controlling the liquid-solid extruding the composite process,the dynamic model is identified using U-D factorization nonlinear model and parameter on-line estimation,which is proposed on the base.

Then we use the improved algorithms for parameter estimation and on-line estimation of chaotic system for its global searching ability.

And something about IMB were discussed such as the method of online design with the information,storage style,software and hardware as well as realization,and for the data transmission in IMB between the storage device and the main controller where maybe concerned some I/O.