After graduating from Nagasaki University in 1981, Professor Someoka became an research assistant at the Nagasaki University Institute for Tropical Medicine. As a graduate student and research student at Hyogo University of Teacher Education, he was involved in research on the early communication patterns of newborns from 1982 to 1984. In particular, his attempts to combine VTRs and the personal computer screens of that time in analyses of the entrainment phenomenon is what is considered "multimedia" today.
From 1985 to 1986, he worked on the development of a multimedia language-based learning system combining personal computers and laser discs at the Integrated Language Education Center of Nagoya University of Commerce and Business Administration. During 1987 and 1988 he worked at the Information System Research Center of the same university, using BitNet to bring together other universities on the development of a business management game that would allow practical training and a computer self-study system, among other projects. He has belonged to the Children's Education Department in the Faculty of Literature at Yasuda Women's University since 1989.
In 1990, he was dispatched as a short-term specialist by the Japan International Cooperation Association (JICA) to conduct a LAN project at the Science Teacher Training Center (STTC) at the University of the Philippines. Since 1993, he has been a member of the operating committee for the regional network project, Chugoku/Shikoku Internet (CSI). In 1994, with a grant from the Ministry of Education, he developed a research project to directly link Suzuhari Elementary School in Hiroshima to the Internet. This led Suzuhari Elementary School becoming the first elementary school domain in Japan. In 1995, CSI became a 100-school project NOC, which provided the opportunity for Professor Someoka to establish the Chugoku/Shikoku Internet Education Utilization Research Group. Since that time he has developed various projects in conjunction with local elementary schools on utilization of the Internet for education.
As a member of the Chugoku/Shikoku Internet operating committee, and a specialist for the Hiroshima Prefectural Society for the Promotion of Advanced Regional Information Systems, Professor Someoka is currently conducting practical research on education technology, in particular concerning educational use of the Internet in elementary schools.