Mediating Interface between Hypertext and Structured Documents. - Koichi Hayashi; Akifumi Sekijima (Electron. Publ., 1993)

Iterated Timing Analysis with Dynamic Partitioning Technique for Bipolar Transistor Circuits. - Masaki Ishida; Koichi Hayashi; Masakatsu Nishigaki; Hideki Asai (ISCAS, 1994)

Interlocus: Workspace Configuration Mechanisms for Activity Awareness. - Takahiko Nomura; Koichi Hayashi; Tan Hazama; Stephan Gudmundson (CSCW, 1998)

Temporally Threaded Workspace: A Model for Providing Activity-Based Perspectives on Document Spaces. - Koichi Hayashi; Takahiko Nomura; Tan Hazama; Makoto Takeoka; Sunao Hashimoto; Stephan Gudmundson (Hypertext, 1998)

Information management strategies using a spatial-temporal activity structure. - Koichi Hayashi; Eriko Tamaru (CHI Extended Abstracts, 1999)

Activity Awareness: Framework for sharing knowledge of people, projects, and places. - Koichi Hayashi; Tan Hazama; Takahiko Nomura; Toshifumi Yamada; Stephan Gudmundson (ECSCW, 1999)

Document exchange model for augmenting added value of B2B collaboration. - Koichi Hayashi; Riichiro Mizoguchi (ICEC, 2003)

Unicursal Supply Chain Management for Extending Traceability from Ordering to Distribution and Settlement. - Koichi Hayashi; Reki Murakami (CEC, 2005)

Diversified SCM standard for the Japanese retail industry. - Koichi Hayashi; Naoki Koguro; Reki Murakami (WWW (Special interest tracks and posters), 2005)