Impact analysis of September 11 on air travel demand in the USA

The Effect of 9/11 on Us Exports and Imports of Tourism

“…Cunado et al (2008), for example, apply fractional unit root tests to monthly bilateral data on tourist arrivals into the United States for the period 1996 to 2006 and find (p. 13) that 'the orders of integration of all series are strictly smaller than one [which] implies that the series are mean reverting' and so the negative shock produced by 9/11 did not have a sustained effect on inbound tourism. Lai and Lu (2005) also conclude that 9/11 had only a temporary effect on the level of international passenger traffic, based on the results of a Seasonal Autoregressive Integrated Moving Average model.…”

Intervention analysis of SARS on Japanese tourism demand for Taiwan

“…The forecasting performance of the ARIMA intervention model was compared with other time series models by Goh and Law (2002) and Lai and Lu (2005). Their studies showed that the ARIMA intervention model has outperformed all the other techniques with the lowest forecast error when significant intervention in a series exists.…”

Calculating load factors for the transatlantic airline market using supply and demand data – A note on the identification of gaps in the available airline statistics

“…At the same time, this particular timeframe does avoid the possible problem of distortions due to the terrorist attacks of 11 September 2001. During the months following these attacks, numerous connections were temporarily removed, and some carriers disappeared from the market (Lai and Whei-Li, 2005). 4 None of these changes will bias our merged database, however.…”