2001 | Professor Emeritus of Computer Science, Lakehead University, Ontario, Canada | ||
1967 | Doctor of Science (Mathemaics), Tokyo Metropolitan University, Tokyo, Japan | ||
2008 2010 |
(visiting)Research Fellow, Aoyama Gakuin University, Tokyo, Japan | ||
2006 2007 |
Lecturer, Faculty of Education, Waseda University, Tokyo, Japan | ||
2001 2006 |
Instructor(Computing Science), Capilano College, North Vancouver, BC, Canada | ||
1981 2001 |
Associate Professor, Computer Science, Lakehead University, Ontario, Canada
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1977 1981 |
Database Coordinator, Ministry of Consumer & Commercial Relations, Government of Ontario, Canada | ||
1974 1977 |
Assistant to President (Systems), ILSCO of Canada, Ontario, Canada | ||
1971 1973 |
Research Assistant (Statistics), University of Minnesota, Minneapolis, Minnesota | ||
1967 1971 |
Assistant Professor (Mathematics), Tokyo Metropolitan University, Tokyo, Japan | ||
1967 1968 |
Visiting Assistant Professor (Mathematics), The Catholic University of America , Washington, DC | ||
1965 1967 |
Lecturer (Mathematics), Faculty of Education, Waseda University, Tokyo, Japan | ||
1962 1965 |
(Research) Assistant (Mathematics), Tokyo Metropolitan University, Tokyo, Japan |
Publications
0 | A note on the convergence of semi-groups of operators, Proc. Japan Acad. 40(1964), no.4, 262-266. Quoted by : Adam Bobrowski, On a somewhat forgotten condition of Hasegawa and on Blackwell's example, Arch. Math. 104(3), 237-246 (2015); Adam Bobrowski, Convergence of One-Parameter Operator Semigroups In Models of Mathematical Biology and Elsewhere,Cambridge University Press, 15. Hasegawa's Condition 85-89 (2016). |
1 | On quasi-analytic vectors for dissipative operators, Proc. American Math. Soc. 29, 81-84 (1971). Quoted by: P.R.Chernoff, Some remarks on quasi-analytic vectors, Transactions of American Math. Soc. 167, 105-113 (1972); P.R.Chernoff, Quasi-analytic vectors and quasi-analytic functions, Invited Address, American Math. Soc., 1975. (6 other published papers in Mathematics.) |
2 | (with Michael D. Perlman, Univ. of Chicago) On the existence of a minimal sufficient subfield, Annals of Statistics 2, 1049-1055 (1974). Quoted by: J.K.Ghosh, H.Morimoto, & S.Yamada, Neyman factorization and minimality of pairwise sufficient subfields, Annals of Statistics 9, 514-530 (1981). (2 other published papers in Statistics.) |
3 | From Data Manipulation to Data Exploration, Invited Talk (30 min), Canadian Math. Soc., Winter Meeting in Montreal, 1999. (1 other Conference paper in Computing Science.) |
Network Systems - Designed/Implemented
1977 | A BOMP LAN based on Sycor System, ILSCO of Canada, Ontario, Canada. |
1981 | Feasibility Study - Court Scheduling WAN based on DataPoint System, Ministry of Attorney General, Ontario, Canada. |
2002 | Internet Assisted Course: Computer Organization and Architecture (COMP211/212), Capilano College, North Vancouver, B.C., Canada (www.wadanet.org/hasegawa) |