講演概要
We define the concept of telecommunicating as the act of maintaining activities by telecommunications that results mainly substitution， modification， complementation and neutrality conditions between telecommunications and travel. In order to examine these relationships， we apply the Poisson and Tobit regression models to data that had been collected in 1998 in the Osaka Metropolitan Area. Two types of devices are dealt with in the analysis: the home phone and the cellular phone.Statistical results indicate the significance of some combinations of the functional forms. Coefficient estimates of the telecommunicating variables have enabled us to quantify the magnitudes， by device， and of different types of effects of telecommunicating on the dependent variables. |