... Acknowledgements The authors gratefully acknowledge the full support of the Ministry of Education, Culture, Sports, Science and Technology of Japan through the 21st Century COE Program. One of authors, ... sites near the coastline in the northern and central regions, TC winds are dominant, but for stations located in the southern regions, from latitudes of 80 N to 110 N, the effect of TC is ... speed of Vietnam Discussions above leads to a most appropriate treatment for evaluating design wind speeds of Vietnam is as following steps: 1) The record length up to the end of the year of...