2016年12月31日土曜日

[DMM Eikaiwa] Teacher ID vs ....

1. Teacher ID vs how long teach


2. Teacher ID vs score


3. Teacher ID vs number of rating


2016年12月30日金曜日

[DMM Eikaiwa] How long does teacher teach English?


1. How many registered teachers in DMM Eikaiwa?

Currently Max teacher ID is 16360(as is Dec/2016). But registered teacher is only 5383(orange line). This number is stable around 5000 from April/2016.  DMM Eikaiwa tried to hire new teacher(so increase max ID number), but many teacher resigned.


2. How long does teacher teach English?


1 year(RED bar) is decreasing. Some teacher is step up to 2 years(Orange bar). But < 1 year(Blue bar)is not shift to 1 year(maybe resign before 1 year). So 1 year is decreasing, I think.
And if this trend(resign level high) continues, teacher skill level may be down because less than one year teacher will be increased.




2016年12月21日水曜日

[DMM英会話]ユーザー評価の平均点

2016年10月末ごろのDMM英会話の先生のユーザー評価の平均点グラフです。
あなたはユーザー評価何点の先生を選んでいますか?


上記の★の数4から5までを拡大したグラフ
2016年10月末現在の先生のIDの最大は15308ぐらい。
登録(home pageにredirectされない)先生数は5436ぐらいです。

2016年12月14日水曜日

[FreeBSD] USB serial convertor

I bought USB serial convertor, and I use it with FreeBSD.

Akizuki Super micro USB Serial convertor module:AE-FT234X (This module uses FT234X chip)
ugen1.3: at usbus1, cfg=0 md=HOST spd=FULL (12Mbps) pwr=ON (90mA)

I connect Raspberry PI with below command.
cu -l /dev/ttyU0 -s 115200