In fiscally centralised countries with a unique country-wide income tax schedule, it is straightforward to quantify the degree of progressivity. In fiscally decentralised countries with varying local tax schedules, however, this is not the case. In these countries, the effective tax...

The aim of this paper is to investigate the most accurate S-curve model, the Logistic, Gompertz, and Bass models, in forecasting the diffusion of telecommunication markets Thailand. The analyses apply the data of mobile telecommunication market and fixed-broadband market separately without the...