Abstract: To provide an aqueous adhesive for an inorganic material with excellent adhesiveness to the inorganic material. An adhesive improver (J) for an aqueous adhesive for an inorganic material including a copolymer (A) containing an unsaturated (poly) carboxylic acid (anhydride) (a1) and a (meth) acrylic acid alkyl (2 to 30 alkyl carbon atoms) ester (a2) as a constituent monomer; and an aqueous adhesive for an inorganic material (X) including the adhesive improver (J), saccharide (B), a polycarboxylic acid (C) having 4 to 24 carbon atoms and water.

Abstract: An object of the present invention is to provide a catalyst that enables production of an unsaturated carboxylic acid and/or unsaturated carboxylic acid ester represented by methyl methacrylate with high selectivity. The object is achieved by a catalyst including: one or more elements selected from boron, magnesium, zirconium, hafnium, and titanium; one or more elements selected from alkali metal elements; and silica; the catalyst having a peak height ratio I2/I1 of 0 to 1.2, wherein I1 represents the peak height at 417±10 cm?1, and I2 represents the peak height at 1050±10 cm?1, as obtained by Raman spectroscopy.

Abstract: A translator includes a unit for communication with a DNS-ALG. The DNS-ALG detects a DNS query to a destination terminal, and performs once translation to IPv6. The DNS-ALG translates a destination temporary IPv6 address, in which a real address of IPv4 acquired from a DNS server of the destination terminal is added with a virtual IPv6 prefix, to a destination temporary IPv4. The IPv6-based DNS-ALG cooperates with the translator to permit alleviation of processing load on the DNS-ALG and reduction in capacity of a translation table of large capacity. A technique is disclosed which, with the above construction, can permit mutual connection among a plurality of VPN's without exchanging the existing VPN's.

Abstract: A mobile data communication system capable of shortening the interruption time of communication includes an HA device, advertising routers, base stations, routers, and mobile terminal devices. Each base station advertises an address having “1” set in a different bit of an interface ID of a routing address. When a mobile terminal has received radio waves from a plurality of base stations in the vicinity of a boundary between cells, the mobile terminal combines a plurality of received routing addresses by logical summation and registers a resultant routing address with the HA device. As for a packet delivered from the HA device to the routing address and having “1” in a plurality of bits of the host section, a router resolves the address of the host section into destination addresses each having “1” in one bit, generates packets each having one of resultant addresses, and transmits the generated packets.

Abstract: A translator includes a unit for communication with a DNS-ALG. The DNS-ALG detects a DNS query to a destination terminal, and performs once translation to IPv6. The DNS-ALG translates a destination temporary IPv6 address, in which a real address of IPv4 acquired from a DNS server of the destination terminal is added with a virtual IPv6 prefix, to a destination temporary IPv4. The IPv6-based DNS-ALG cooperates with the translator to permit alleviation of processing load on the DNS-ALG and reduction in capacity of a translation table of large capacity. A technique is disclosed which, with the above construction, can permit mutual connection among a plurality of VPN's without exchanging the existing VPN's.

Abstract: A translator includes a unit for communication with a DNS-ALG. The DNS-ALG detects a DNS query to a destination terminal, and performs once translation to IPv6. The DNS-ALG translates a destination temporary IPv6 address, in which a real address of IPv4 acquired from a DNS server of the destination terminal is added with a virtual IPv6 prefix, to a destination temporary IPv4. The IPv6-based DNS-ALG cooperates with the translator to permit alleviation of processing load on the DNS-ALG and reduction in capacity of a translation table of large capacity. A technique is disclosed which, with the above construction, can permit mutual connection among a plurality of VPN's without exchanging the existing VPN's.

Abstract: A translator includes a unit for communication with a DNS-ALG. The DNS-ALG detects a DNS query to a destination terminal, and performs once translation to IPv6. The DNS-ALG translates a destination temporary IPv6 address, in which a real address of IPv4 acquired from a DNS server of the destination terminal is added with a virtual IPv6 prefix, to a destination temporary IPv4. The IPv6-based DNS-ALG cooperates with the translator to permit alleviation of processing load on the DNS-ALG and reduction in capacity of a translation table of large capacity. A technique is disclosed which, with the above construction, can permit mutual connection among a plurality of VPN's without exchanging the existing VPN's.

Abstract: A mobile data communication system capable of shortening the interruption time of communication includes an HA device, advertising routers, base stations, routers, and mobile terminal devices. Each base station advertises an address having “1” set in a different bit of an interface ID of a routing address. When a mobile terminal has received radio waves from a plurality of base stations in the vicinity of a boundary between cells, the mobile terminal combines a plurality of received routing addresses by logical summation and registers a resultant routing address with the HA device. As for a packet delivered from the HA device to the routing address and having “1” in a plurality of bits of the host section, a router resolves the address of the host section into destination addresses each having “1” in one bit, generates packets each having one of resultant addresses, and transmits the generated packets.