- 2022/04 - 現在 University of Osaka Graduate School of Humanities Professor
- 2019/04/01 - 2022/04 Osaka University Graduate School of Language and Culture Studies in Language and Culture Professor
- 2007/04 - 2019/03 Associate Professor of Corpus Linguistics, Graduate School of Language and Culture, University of Osaka
- 2005/04 - 2007/03 Associate Professor, Graduate School of Language and Culture, Osaka University
- 2007 - - 大阪大学・准教授(大学院言語文化研究科)
- 2007 - - Associate Professor of Corpus Linguistics, Graduate School of Language and Culture, University of Osaka
- 2000/04 - 2005/03 Associate Professor of Linguistic Technology, Faculty of Language and Culture, Osaka University
- 2005 - - Associate Professor, Graduate School of Language and Culture, Osaka University
- 1996/10 - 2000/03 Assistant Professor of English, Department of English, Osaka University
- 2000 - - Associate Professor of Linguistic Technology, Faculty of Language and Culture, Osaka University
- 1994/04 - 1996/09 Assistant Professor of English, National College of Technology, Ariake
- 1993/05 - 1994/03 Government-funded visiting researcher, Centre for Literary and Linguistic Computing, University of Newcastle, NSW, Australia
- 1992/04 - 1994/03 Associate Lecturer, National College of Technology, Ariake
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情報処理学会 人文科学とコンピュータ研究運営委員会
, Dickens Society
, Association for Computers and the Humanities
, Association for Literary and Linguistic Computing
, 英語コーパス学会
, 近代英語協会
, Association for Literary and Linguistic Computing
, International Association of University Professors of English
, Poetics and Linguistics Association
, The Association for Computers and the Humanities
, The Association for Literary and Linguistic Computing