Practical study of Korean and Japan Distance Learning between three

points with DVTS

Takashi FUJIKI, Byungdug JUN, Yusuke Morita, Daisuke YAGYU, (Nagasaki University)

Sangsoo Lee(Chonnam Nat’l University)

Kenji WATANABE, Toshihiko SHIMOKAWA(Saga University) (Kyushusangyo University)

Core Univ. Seminar : Distance learning sub-group of e-Learning team （ 2004.5.14)

We performed international distance exchange/learning

Feb. 18(Exchange), 19(Learning), 2004

Exchange flow

1)Greeting speech(Head master of ChNU's MS)

2)Introduction of each school

Introduction of each city, school, school events etc.

4)Q & A

Q & A by each group using translation chat.

5)Greeting speech(Head master of NU's MS)

Class Work ContentLearning about Energy Problem

(Theme: Lets think future of energy beyond the sea!)

Materials: Map and graph using Web-GIS(Comparing with quantity of electric power by power generation about Korea, Japan, and other country)

Explanation by expert(Kind of power generation and quantity, and new energy)

Class Work ExpansionShowing CoalsBurning coal has many problems.

(Done away with fossil fuel, Exhaust harmful

gases, Air pollution, Rise in temperature,

Acid rain)

Electric power is clean.Electric power is generated with coals.Our countries, Korea and Japan, 60% of electric power generation need coal etc..Thinking dream energy together.

Concept

Learning of Earth Environment breaking through the wall of country

“ Let’s think about future energy beyond the sea “Connecting between three points, Gwangju, Fukuoka and Nagasaki

Purpose

Practical study on international distance learning between three points with DVTS and Web-GIS

Factors on International Distance Exchange

Language -- Human Translation, Trans. Chat

Content -- Environmental Education

Materials of Learning -- Coal, Energy Map with Web-GIS

Environment -- DVTS(Video/Audio quality)

Hu

man

T

ran

sla

tio

n,

Tra

ns

. Ch

at

Environmental Education

LanguageLanguage

MaterialsMaterials

ContentContent

DVTS

EnvironmentEnvironment

Korean Japanese

NagasakiNagasakiGwangjuGwangju

FukuokaFukuoka

Main Teacher & Translator

3 Points Venue by DVTS

Sub Teacher & Students

Sub Teacher & Students

Reason for 3 points venue

Necessity of main teacherNecessity of equal footing for each students

・ School teachers have to care their students

・ Main teacher’s class will be a master class and not main teacher’s class will be a slave class.

Chonnam Univ.

Nagasaki Univ.

KOREN JGN

1Gbps1Gbps

Middle School

Middle School

• Link of schools : 100Mbps

Network

Genkai QGPOPDVTSDVTS

100Mbps 100Mbps

Kyusyusangyo Univ.

Chonnam Univ.

Nagasaki Univ.

DVTS

DVTS DVTS

DVTS

DVTS

DVTS

DVTS

DVTS

Video Mixer

DVTS

Construction for 3 DVTS venue

Classroom Construction

• 3 Screens

1)DVTS

2)Trans. Chat

3)Web-GIS

• 2 Mics

• 2 Video Cameras for DVTS

ChNU

NU

DVTS SenderDVTS Receiver

HUB Campus LAN

DV cam DV cam

IEEE1394 IEEE1394

100Base-TX

Projector

Video Out

Audio MixerEcho CancellerEtc. DV cam

Video out

Audio Out Audio Out

Nagasaki/Gwangju System

DV cam

Video out

Video

Switcher

Video out

TranslationChat PC

Projector

Web GIS PCProjector

Snap shots (ChNU)

• Exchange

• Introduction and Q&A with Trans. Chat

Construction of KSU • Monitors 1)2 schools 2)Sending picture 3)Trans. Chat 4)IRC• 2MICs• video camera

Video Mixer

DV Deck

DVTS Sender to ChNUDVTS Receiver from ChNU

HUB

IEEE1394

100Base-TX

MixerEcho Cancelleretc

DVTS Sender to NU

Media Converter

Video Camera

Media Converter

Projectoror Monitor

DVTS Receiver from NU

Audio, Video Output

Video Out

Audio

KSU System

DV Deck DV Deck

Audio, Video Out

IEEE1394

TranslationChat PC

Projector or Monitor

Web GIS PCProjector or Monitor

Translation Chat

• Short sentence• Divide a

sentence by block

• Expression look like not conversation

Web-GIS as Learning Material

• Displaying ratio of electric power generation

• Also using graph

Behavior of Bit Rate in Learning

At KSU on Feb.18th

0

10

20

30

40

0 2000 4000 6000 8000Elapsed Time [sec]

Bit

Rat

e [M

bps]

KSU -> NU

KSU <- NU

Bit Rate avg.: 29.0 Mbps

Bit Rate avg.: 29.0 Mbps

At KSU on Feb. 18th

0

10

20

30

40

0 2000 4000 6000 8000Elapsed Time [sec]

Bit

Rat

e [M

bps] KSU -> ChNU

KSU <- ChNU

Bit Rate avg.: 8.1 Mbps

Bit Rate avg.: 6.1 Mbps

NU-KSUChNU-KSU

• NU KSU : 29 Mbps (Full frame)

• ChNU KSU : 6 Mbps (7 fps)

ChNU KSU : 8 Mbps (7 fps)

Example of DVTS Screen Image

Nagasaki

(Recording at KSU)

Gwangju

(Recording at NU)

Results of Questionnaire

• Learner’s evaluation : good

• Teacher’s evaluation : not so good

Conclusion

We practiced international distance learning about environment education using high quality movie through gigabit network, human and chatting translation system between Korea and Japan.

Future Work

Distance Learning using HDTV

Acknowledgement• Core Univ. project• QGPOP• TAO• KOREN• G/H• e! project• KEPCO(Kyushu Electric Power Company)• Middle School of Chonnam Nat’l Univ.• Middle School of Nagasaki Univ.

Thank you very much.I am appreciate for your

kind attention.

Takashi FUJIKI

(Faculty of Education, Nagasaki University)

t-fujiki@net.nagasaki-u.ac.jp