A new control logic was set up for an externally-controlled variable displacement compressor(EVDC) which is assembled in air conditioning system of auto-controlled mobile.

Meanwhile four exogenous variables including benefit group influence power,substitute energy,transaction price,price expectation and carbon tax and their functional mechanism on the firm demand of carbon emission right are analyzed.

The authors forecast day-ahead electricity price by generalized autoregressive conditional heteroscedasticity(GARCH) model and as exogenous variable the daily price ratios of different weekday types are led into this GARCH mode to intensify the response of the proposed model to external influences.

So in this paper,one tried to apply those theories or methods of nonparametric and semi-parametric regression to nonlinear time series model with exogenous variables.

It analyzes in deep the whole course of rules and methods of the same name variable quoting separately from four aspects that is parameter in shape and parameter in fact,memory space assign,compound statements,external variable and inside variable.

The econometric model can be used to estimate and forecast the economic losses in meteorological disasters if they are regarded as endogenous variables and various meteorological influenential factors as exogenous variables.

With a review of China s IPO system evolution, the author makes an analysis on exogenous variables of China s IPO system evolution from three perspectives: expected profits, cumulative changes of favorable social elements and stability of current system.

There is hypothesis in traditional strategic academic theory that customer is enterprise exterior variable, so every theory scholar attempts to cultivate core competence from the bottom of enterprise.