Redirecting to https://futureship.sec.tsukuba.ac.jp/application/files/9517/0962/3491/vol23-2016--.pdf. Redirecting to https://futureship.sec.tsukuba.ac.jp/application/files/9517/0962/3491/vol23-2016--.pdf Redirecting to https://futureship.sec.tsukuba.ac.jp/application/files/9517/0962/3491/vol23-2016--.pdf.