Mayumi Kubo is a board member of the OSGeo-Japan chapter. She has been contributing to FOSS4G Hokkaido, an OSGeo-JP local chapter, since its formation, 2012. She plans FOSS4G conference and workshops, works as a QGIS instructor, plans FOSS4G T-shits, arranges a fun beer-party and etc...She is working as a research assistant in a civil engineering research institute using QGIS and GRASS. Mayumi's profile
Beginners course for QGIS Raster [Japanese]: http://www.slideshare.net/Mayumit/qgis-38312837
How to make river profiles using QGIS plugins [Japanese]: http://www.slideshare.net/Mayumit/qgis-24747427
Making Sapporo Childcare Map: http://www.slideshare.net/Mayumit/making-sapporo-childcare-map
Sapporo Childcare Map
She plans and develops Sapporo Childcare Map using FOSS4G in cooperation with IT engineers.
A short story about the Map: http://www.sapporosmile.com/projects/code-for-sapporo/?lang=en