Papers

Influences of boundary condition of pipe on acoustic wave deformation

Ken GOTO, Takahiro ITOH, Takahiko NAGAYAMA, Mio KASAI and Tomomi MARUTANI　3

Technical Papers

Recognition, opinion and evaluation of sabo by the residents around debris flow disaster stricken area in Miyake Island

Hiroshi MAKINO, Naoki NISHIMURA, Masaaki MANTOKU, Yoshiharu ISHIKAWA and Haruo NISHIMOTO　　12

Aging of INSEM and INSEM structures in natural environments

Hajime SATO, Tomoyuki ABE and Kazuhiro MINAMINO　　20

General Review

Characteristics of the Act for Prevention of Disasters Due to Collapse of Steep Slopes seen from its aim and roles act played in nonstructural measures against sediment disasters

Hiroshi MAKINO and Yukihiro ASAHINA　　28

Technical Note

Study on the date processing method algorithm for small fish with the resistivity fish counter

Yutaka GONDA, Yasuyuki KONDO and Kaho NAKAMURA　　37