久方振りの更新です。日常生活や仕事の合間にこつこつ書きためていたものを (後追いになりますが) 暇を見つけては公開していくことにします。さて今回は . . . .

Sorry for scarce updates on this site. I’ve been writing several articles little by little when I had some spare time during my daily life as well as my work. And right now this topic deals with . . . .