1. Faculty of Textile Science and Technology, Shinshu University, Ueda-City, Nagano Pref, Japan
2. Institute for Fiber Engineering, Shinshu University, Ueda-City, Nagano Pref, Japan
3. Graduate School of Engineering Science, Akita University, Akita-City, Akita Pref, Japan
4. Graduate School of Science and Technology, Shinshu University, Ueda-City, Nagano Pref, Japan