Notice of RetractionStudy on the sale tactics based on the substitution of new support implement for old support equipment

Notice of Retraction

After careful and considered review of the content of this paper by a duly constituted expert committee, this paper has been found to be in violation of IEEE´s Publication Principles.

We hereby retract the content of this paper. Reasonable effort should be made to remove all past references to this paper.

The presenting author of this paper has the option to appeal this decision by contacting TPII@ieee.org.

Based on a mended two-phase Bass model, this paper investigates the impact of some factors on the total market share of the contractor in course of selling the new support equipments, such as the substitution degree of new support equipments for old support equipments, negative word-of-mouth and marketing effort, and competition support equipments. The conclusion is made as: the support equipments substitution setting is influenced by the relationship between the relative degree of the negative effect of markets on the new and old support equipments (negative word-of-mouth and competition support equipments) and the proportion of marketing effort for old support equipments to the total marketing effort. Finally, based on different conditions, the connection of substitution setting and the total market share is analyzed. Aiming at the conclusion, the market sale tactics can be adjusted based on the theories.