(openSUSE.asia summit 2017) non native english speakers in open source communities- a true story OpenStack コミュニティにおける ESL 話者の苦悩と奮闘記 Non native english speakers in open source communities - a true story OpenStack Upstream開発におけるCI品質向上施策 Tempest scenariotests 20140512 Ensuring OpenStack Version up Compatibility for CloudOpen Japan 2013-05-31