Abstract: A network of a new configuration is flexibly constructed while maintaining a stable operation in the network. A management device includes: a detection unit that detects addition of a function unit to a network including one or a plurality of on-vehicle function units; an acquisition unit that acquires function unit information of a new function unit that is the function unit the addition of which has been detected by the detection unit and function unit information of each on-vehicle function unit, each piece of function unit information including information regarding network configuration of a layer lower than an application layer; and a generation unit that, based on the pieces of function unit information acquired by the acquisition unit, generates configuration information of a new network that is the network further including the new function unit.

Abstract: Provided is an optical glass that contains TiO2 and/or Nb2O5 as components of a glass composition, achieves a high light transmittance, and has excellent mass productivity. An optical glass contains TiO2 and Nb2O5 in a total amount of 20% by mole or more as components of a glass composition and has a basicity of 12 or more.

Abstract: Provided are an airtight package that can increase the bonding strength between the sealing material layer and the container and a method for manufacturing the same. An airtight package 1 includes: a container 2 with a frame 3; a glass lid 4 disposed on top of the frame 3 and sealing the container 2; and a sealing material layer 5 disposed between the frame 3 and the glass lid 4 and bonding the glass lid 4 and the container 2 together, wherein in the sealing material layer 5 a bonding surface 5b between the sealing material layer 5 and the container 2 is larger than a bonding surface 5a between the sealing material layer 5 and the glass lid 4.

Abstract: Provided are an airtight package that can increase the bonding strength between the sealing material layer and the container and a method for manufacturing the same. An airtight package 1 includes: a container 2 with a frame 3; a glass lid 4 disposed on top of the frame 3 and sealing the container 2; and a sealing material layer 5 disposed between the frame 3 and the glass lid 4 and bonding the glass lid 4 and the container 2 together, wherein in the sealing material layer 5 a bonding surface 5b between the sealing material layer 5 and the container 2 is larger than a bonding surface 5a between the sealing material layer 5 and the glass lid 4.

Abstract: The present invention provides a glass having a refractive index and a coefficient of thermal expansion close to those of quartz glass, respectively, and also having anti-devitrification properties excellent enough to avoid the development of defects such as devitrification on the glass surface even when it is molded by drawing process or reheat forming, more specifically an optical glass for use in optical communication devices, particularly an optical glass for use in a stub. The optical glass of the invention is composed of a borosilicate glass having a refractive index of from 1.44 to 1.46, a coefficient of thermal expansion of from 10×10?7 to 50×10?7/° C., and a liquidus viscosity of 105.5 dPa·s or more.

Abstract: The present invention provides a glass having a refractive index and a coefficient of thermal expansion close to those of quartz glass, respectively, and also having anti-devitrification properties excellent enough to avoid the development of defects such as devitrification on the glass surface even when it is molded by drawing process or reheat forming, more specifically an optical glass for use in optical communication devices, particularly an optical glass for use in a stub. The optical glass of the invention is composed of a borosilicate glass having a refractive index of from 1.44 to 1.46, a coefficient of thermal expansion of from 10×10?7 to 50×10?7/° C., and a liquidus viscosity of 105.5 dPa·s or more.