Here is the pages introducing air traffic control (that is how the aircrafts are controlled in flight by local authorities) and avaigational aids for air crafs. These pages are written only in Japanese.

Radio frequency table of air traffic control (terminal, enroute, HF) in Japan is available. While it is written partially in Japanese, it will be great help for spotters and radio scanners visiting Japan and expecting to watch these frequencies. ( In Japan, watching utility and military radio is not restricted provided that the existance and contents of communication are in confidential.)

A famous and suspectabliy fictious physician Hippocrate is well knows his or his fellows' oath for their guild that is thought to be universal ethical standards of physician.
This page is written in both English and Japanese (partially in greek).

Greeting and self introduction by the author. (English version is being prepared)

Keisuke Nagase M.D.,Ph.D.