Most recently, I have studied and developed systems for mobile services using open source such as Php, Java EE, Spring framework, Pentaho mondrian OLAP server, R-project, MySQL, jQuery & jQM, etc. Also, I am interested in business data analysis and integrating information systems using open source platforms. I think those are useful tools to run the company. And I like data anlyzing so much, therefore for my business I always use the Google anlytics, sometimes using R for mining new knowledge. From 2015, I am teaching the techniques, web & mobile programming, data anlysis for student at Hanshin University.
From 2009, I changed my concern to new technologies. 2010 at Lotte.com, the first...