特集「情報爆発時代に向けた新しいIT基盤技術の研究」にあたって(<特集>情報爆発時代に向けた新しいIT基盤技術の研究) Editors' Introduction to "Grant in Aid for Scientific Research on Priority Areas : Cyber Infrastructure for the Information Explosion Era"(<Special Issue>Grant in Aid for Scientific Research on Priority Areas: Cyber Infrastructure for the Information Explosion Era)