By introducing the hedonic price theory and forms of price function and analyzing the model of hedonic price function and applying conditions in the first place, the authors advance how to establish hedonic price function on the basis of which the price of evaluated real esta.

explantory varible and choice of functional form) of hedonic price function are introduced Meanwhile.

Median regression was performed to estimate the multi-output cost function and marginal cost of discharge patients,and scale economies were calculated.

The paper discusses the broad applicability of the railway transport trans-log cost function under the condition of different research aim,studies the variables selection of China passenger / freight transport cost function and depicts on the practical application of railway transport cost function in the research on railway economic problem.

In this paper,by using cost functions of flights,a model is presented to schedule aircraft landings,which satisfies the landing intervals and separation constraints,and puts forward a heuristic algorithm by using local search and linear programming.

In some mathematic books of economy and management published recently,the statement about function of total cost tends to make readers misunderstanding.