Abstract: There is provided a radiation-curable resin composition for formation of a primary covering layer, the radiation-curable resin composition being able to form a cured layer having excellent flexibility and adequate mechanical strength. A radiation-curable resin composition for formation of a primary covering layer of an optical fiber, comprising a urethane oligomer, a polymerization initiator and a free-radically polymerizable non-urethane monomer, the urethane oligomer being the reaction product of a polyether-based urethane prepolymer and an isocyanate reactive compound containing one active hydrogen group, the isocyanate reactive compound containing an aliphatic alcohol and an ethylenic unsaturated group-containing isocyanate reactive compound, and the aliphatic alcohol content in the isocyanate reactive compound being 24 mol % or higher.

Abstract: An electronic information management device includes: an associating unit that associates electronic information with first access right information with respect to each user, the electronic information being associated with an associated site so that the electronic information is stored at the associated site, the associating unit further associating the associated site with second access right information with respect to each user; a receiving unit that receives a request for access to the electronic information from a user; a determining unit that, when the receiving unit receives a request for access to the electronic information, determines the sum of the first access right information and the second access right information, and, based on the sum of the access right information, determines whether to allow the user to access the electronic information; and an access controlling unit that controls access to the electronic information in accordance with the determination result of the determining unit.

Abstract: An electronic information management device includes: an associating unit that associates electronic information with first access right information with respect to each user, the electronic information being associated with an associated site so that the electronic information is stored at the associated site, the associating unit further associating the associated site with second access right information with respect to each user; a receiving unit that receives a request for access to the electronic information from a user; a determining unit that, when the receiving unit receives a request for access to the electronic information, determines the sum of the first access right information and the second access right information, and, based on the sum of the access right information, determines whether to allow the user to access the electronic information; and an access controlling unit that controls access to the electronic information in accordance with the determination result of the determining unit.

Abstract: The present invention provides an information sharing apparatus that realizes global information sharing based on partial information which is locally released by communication. The information sharing apparatus includes information management devices each of which has a pipe management system and communicates with each other to transmit information. The pipe management system includes a pipe management part that manages a set of pipes. Each pipe has detailed items and their weights to represent a relationship between two information management devices. The pipe management system further includes a pipe retrieving part that retrieves a pipe matching a request of the user from the set of pipes managed by the pipe management part and a pipe composing part that generates a new pipe by composing retrieved pipes. The pipe management system transmits user's request to the other systems. Thereby pipes matching the request are composed to expand a pipe held by the system that originally transmitted the request.