Abstract: A ceiling panel to be fixed to a ceiling base, the ceiling base having a long shape extending in a first direction and being provided in parallel spaced in a second direction orthogonal to the first direction. The ceiling panel includes a panel body in a shape of a rectangular flat plate, a magnet provided on a back face side of both end portions of the panel body in the second direction and being attracted to an attracted portion of the ceiling base, a hooked portion provided for a first end portion of the panel body in the first direction, and a hooking portion provided for a second end portion of the panel body in the first direction, the hooking portion hooking on a hooked portion of an adjacent ceiling panel to be provided in the first direction.

Abstract: In an agent system having a plurality of agents each of which executes predetermined processing while moving through a plurality of nodes connected to an information network, the plurality of nodes respectively have a plurality of agent platforms which receive and execute the agents, one of the agent platform and the node has synchronization means, and when the plurality of agents which are running on the same node should synchronously execute operation, the plurality of agents on the same node execute processing synchronously by sending a synchronization request message to the synchronization means.

Abstract: The present invention relates to a system for protecting and controlling main-circuit components of an electricity transmission substation. The system includes devices for digital data output, protection-and-controlling, component controlling-and-monitoring, and communication. The digital data output devices input analogue AC electric values and output digital data. The protection-and-controlling devices input the data from the digital data output devices, and further control, monitor, and protect the substation main-circuit components. The component controlling-and-monitoring devices receive commands from the protection-and-controlling devices or from the substation controlling-and-monitoring equipment, and further control and monitor the substation main-circuit components. The devices for digital data output, the protection-and-controlling, and component controlling-and-monitoring are disposed near or within their corresponding substation main-circuit components.

Abstract: In a data management unit in a computer system, the computer system has a computer in which the data management unit is incorporated, and a terminal intercommunicates with the computer. In the data management unit, an object data storage unit (memory) stores in addresses thereon data items to which the terminal is adapted to make access. A parameter management file stores thereon parameters concerning a data structure of each data item. The parameters include a data name of each data item, a data type of each data item, an address related to each data item on the data storage unit and an array information of at least one data item. Then at least one data item has an array structure, and the array information includes a number of the array elements. On a number of bytes definition table, a number of bytes corresponding to each data type of each data item is stored.

Abstract: In an agent system having a plurality of agents each of which executes predetermined processing while moving through a plurality of nodes connected to an information network, the plurality of nodes respectively have a plurality of agent platforms which receive and execute the agents, one of the agent platform and the node has synchronization means, and when the plurality of agents which are running on the same node should synchronously execute operation, the plurality of agents on the same node execute processing synchronously by sending a synchronization request message to the synchronization means.

Abstract: In the electric power system protective control system, a plurality of protective control apparatuses each having a protective control function to an electric power system are distributed and connected through a communication network to each other so that data communication is permitted among the respective protective control apparatuses. Each of the protective control apparatuses is carried out a process of executing a control operation related to the protective control function of the own apparatus according to a program module. The program module migrates through the communication network to the own apparatus along a predetermined route of migration. Each of the protective control apparatuses executes a process of migrating the program module from the own apparatus to another protective control apparatus. The another protective control apparatus is determined to a next destination of migration according to the route of migration.

Abstract: A system for protecting and controlling substation main-circuit components. The system comprises: digital data output means for inputting analogue AC electric values and outputting digital data; protection-and-controlling means for inputting the data from the digital data output means, and for controlling, monitoring and protecting the substation main-circuit components; component controlling-and-monitoring means for receiving commands from the protection-and-controlling means or the substation controlling-and-monitoring equipment, and for controlling and monitoring the substation main-circuit components; and communication means. The digital data output means, the protection-and-controlling means and the component controlling-and-monitoring means are built in their corresponding substation main-circuit components.