The Forum on Environment Protection Taipei, Taiwan, ROC, Dec. 7, 2004. A Collaboration Support System for Environmental Protection using Networks between Japan and ROC Shigeichi HIRASAWA Department of Industrial and Management Systems Engineering, School of Science and Engineering, Waseda University 1 1. Introduction Collaboration support system NetCon[1][2][3] for the research support system: Video conference with low cost devices and with a low running cost 2 2. Collaboration Support System The collaboration support system consists of: (1) A video conference system (2) A private database and its information retrieval engine 3 2.1 Video conference system Table 2.1 Comparison of Video Conference System C lient R equirem ent P rice C odec U nit S pecification N etw ork P rotcol B andw idth IP A ddressing S ystem S pecification M ain U nit V isualInput D evice V isualO utput D evice S ound I/O R em ote C ontrol O ptionalD evice P ow erP oint File S hareing U ser A ccount V isualO utput m ethod (A ) (B ) (C ) (D ) (E) N et M eeting (P er C lient) B izM ate (1:S erver 48C lient) V iaV ideo (P er U nit) V iew S tation (P er U nit) S pecilized V ideo C onference S ystem $10,000 B uild in to H ardw are $100,000 O rder-M ade LA N ＆IS D N H 320.323 128-512K Fixed G lobalIP LA N ＆IS D N H 320.323 384k以上 N /A Freew are $8,000 $1,500 M icrosoft S tandard Included in B izm ate W eb C lientS pecialized S oftw are LA N H 323 M iddium D H C P A cceptable LA N S pecilized narrow D H C P A cceptable LA N H 323 64-384k Fixed IP P ersonalC om puter W eb C am era (U S B ) C R T/LC D M onitor P ersonalC om puter W eb C am era (U S B ) C R T/LC D M onitor P ersonalC om puter B uild in C am era C R T/LC D M onitor H eadset H eadset H eadset N /A N /A N /A S oftw are B uildin S oftw are B uildin N /A R equired P C m onitor R equired P C m onitor S pecilized U nit N /A B uild in C am era S pecialized C am era TV V ideo P rojector S pecialized M icrophone M icrophone TV S peacker S peaker R em ote C ontroller R em ote C ontroller O HP O HP O ptionalEquipm ent O ptionalEquipm ent R equired R equired R equired P C m onitor com posit B uild in m icrophone w ith S pecialized M icrophone P C C onnected S peaker S ound I/O m ethod P C C onnected H eadsetP C C onnected H eadset and or P C C onnected S peaker H eadset N um ber of U ser per U nit 1user 1user 1user 10 user or m ore S pecialized R em ote O perating U nit PC PC PC C ontroller Function text chat ○ ○ × × W hite board ○ ○ × × File Transfer ○ ○ × × A pplication S haring ○ ○ × × S erver M CU S pecilized S erver × ○ M ax num ber of participant M ax 8 16 16 16 (P er C onference) com posit D esktop M icrophone 50 user or m ore C ontrolP anel 16 4 2.1 Video Conference System (A) : the most low grade type (E) : one of the most high grade type ・All of these systems are now in operating for distance learning mainly for that of cross-culture in Waseda University. ・(B),(C) and (D) are medium grade types, and we properly choose them dependent on the purpose. As for the collaboration support system, the following points are important to decide the functions and performance. (1) The CODEC delay time is small. (2) A power point (ppt) file shearing is acceptable or a view camera for OHP is applicable. (3) The global IP is required for network security. (4) Multi-useｒ per conference is applicable. 5 2.1 Video Conference System ・In the case of education, multi-user system is necessarily realized. ・Ｉn the case of research activities, a small delay time is highly recommended. As a result, it is better to choose (C) or (D) to apply into the collaboration system. 6 2.2 Private database and its information retrieval engine Private database: ・Teaching materials used for education ・Unpublished papers, books, intermediate data for their own research areas used for research ・Documents : in Japanese, Chinese and English Three types of information retrieval engines, (1) Key-word based engine based on the Boolean model, (2) Concept search engine based on the vector space model, (3) Full text search engine. 7 2.3 Activities for collaboration system The collaboration system is used for (1)Distance learning between Waseda University (Environment Engineering Course) and universities in Taiwan. (On demand classes) . (2) Discussions by researchers on environment protection between Waseda University (Environment Research Center) and Environment Protection Administration, Taiwan, ROC. 8 3. Concluding Remarks (1) Because of both the QoS and an initial and running costs, medium grade system configurations are recommended for the video conference of the collaboration support system, which are applicable to education and research activities at present. (2) Future developments in information technologies will give us more high grade and more comfortable systems in their functions and performance with a low cost. 9
© Copyright 2024 ExpyDoc
