IPSJ Current Number http://www.ipsj.or.jp/english/index.html IPSJ Current Number IPSJ Magazine (Vol.54 No.6) Special Features : Real World Wearable Activity Sensing and Its Applications (Only Japanese) http://www.ipsj.or.jp/english/saisingo/mag5406.html 2013-05-15 IPSJ Journal (Vol.54 No.5) Special Issue: Mathematics of Puzzles http://www.ipsj.or.jp/english/saisingo/vol54no5.html 2013-05-15 Journal of Digital Practices (Vol.4 No.2) (Only Japanese) http://www.ipsj.or.jp/english/saisingo/0402.html 2013-04-15 IPSJ Magazine (Vol.54 No.5) Special Features : Combating for DoS Attacks (Only Japanese) http://www.ipsj.or.jp/english/saisingo/copy_of_mag5405.html 2013-04-15 IPSJ Journal (Vol.54 No.4) Special Issue: New Directions in Music Information Processing(Special Issue Marking the 20th Anniversary of IPSJ SIGMUS) / Special Issue: Understanding, Technology, and Application of Interaction http://www.ipsj.or.jp/english/saisingo/vol54no4.html 2013-04-15