Abstract: Distribution of a certificate and a private key via a network includes a certificate/private key storage unit by which a certificate and a private key prepared for distribution to one or more devices are stored; a security level storage unit by which a security level for each device belonging to a device group is stored; and a display/instruction unit by which a selection screen prompting a user to select one or more devices from the device group is displayed. An instruction for the selection made by the user is received; and a certificate/private key distribution unit by which, via the network, the certificate and the private key for each device are distributed to the one or multiple devices for which the instruction for selection was made. For each device, the selection screen displays the device security level.

Abstract: Distribution of a certificate and a private key via a network includes a certificate/private key storage unit by which a certificate and a private key prepared for distribution to one or more devices are stored; a security level storage unit by which a security level for each device belonging to a device group is stored; and a display/instruction unit by which a selection screen prompting a user to select one or more devices from the device group is displayed. An instruction for the selection made by the user is received; and a certificate/private key distribution unit by which, via the network, the certificate and the private key for each device are distributed to the one or multiple devices for which the instruction for selection was made. For each device, the selection screen displays the device security level.

Abstract: A management apparatus includes user group information for managing the terminals by grouping terminals into groups each corresponding to service use conditions of terminals belonging to the group, and service information for associating each of the services provided by the service providing resources with paths for passing data when a terminal uses the service and a failure group which is affected by a failure when the failure occurs in one of the paths. When a failure occurs in one of the paths in the network, the management apparatus refers to the service information to identify a service for which the paths in the service information include the failed path as a failed service, identifies a failure group associated with the identified failed service, refers to the user group information to identify terminals belonging to the identified failure group as failure terminals, and reports the identified failure terminals.

Abstract: A network management/apparatus connected to a plurality of packet relay apparatuses constituting a group through a network includes an energy saving level calculation unit for calculating an energy saving level of each of the packet relay apparatuses on the basis of a CPU usage ratio of the packet relay apparatus managed or a difference between the present energy saving level and the energy saving level of minimum guarantee of the packet relay apparatus, and an energy saving function setting unit for setting an energy saving function of the packet relay apparatuses on the basis of the energy saving level calculated by the energy saving level calculation unit.

Abstract: A network management/apparatus connected to a plurality of packet relay apparatuses constituting a group through a network includes an energy saving level calculation unit for calculating an energy saving level of each of the packet relay apparatuses on the basis of a CPU usage ratio of the packet relay apparatus managed or a difference between the present energy saving level and the energy saving level of minimum guarantee of the packet relay apparatus, and an energy saving function setting unit for setting an energy saving function of the packet relay apparatuses on the basis of the energy saving level calculated by the energy saving level calculation unit.

Abstract: A server 200 includes a scenario table in which object to-be-monitored information that indicates one or more network devices A, B and C being objects for failure recovery, failure information for identifying contents of failures, countermeasure information against failures, and frequency information that indicates the number of times of the recoveries from the failures based on the countermeasure information are correspondingly stored. The network device A 300 detects the failure of the network device itself and transmits a failure event to the server 200. The server 200 selects the countermeasure information item in descending order of the frequency information items, by reference to the scenario table, and transmits the selected countermeasure information item to the network device A 300. The server 200 repeats the selections and transmissions of the pertinent information item until the reception of the failure event from the network device A 300 stops.

Abstract: A server 200 includes a scenario table in which object to-be-monitored information that indicates one or more network devices A, B and C being objects for failure recovery, failure information for identifying contents of failures, countermeasure information against failures, and frequence information that indicates the number of times of the recoveries from the failures based on the countermeasure information are correspondingly stored. The network device A 300 detects the failure of the network device itself and transmits a failure event to the server 200. The server 200 selects the countermeasure information item in descending order of the frequence information items, by reference to the scenario table, and transmits the selected countermeasure information item to the network device A 300. The server 200 repeats the selections and transmissions of the pertinent information item until the reception of the failure event from the network device A 300 stops.

Abstract: A ladder circuit editing system inputs and edits a sequence program for a program controller in the form of a ladder diagram. The ladder circuit editing system has an unavailable area storing at least one inputted circuit pattern and an available area storing a new circuit pattern, and successively inputs circuit patterns from the available area. The ladder circuit editing system includes a circuit pattern extracting means, a display means, and a copying means. The circuit pattern extracting means compares a circuit element from a circuit pattern stored in the available area with a circuit element from a circuit pattern already stored in the unavailable area, and extracts a circuit pattern containing a circuit element that agrees with a stored one. The display means displays the extracted circuit pattern on an input screen. The copying means copies the extracted circuit pattern into the available area according to an operator's entry.

Abstract: A welding management apparatus for use with a tube production machine. A workpiece fed from a roll of metal strip is formed in a tubular formation having side surfaces opposite to each other. An upsetting pressure is applied to joint the opposite side surfaces of the workpiece at a jointing point. A high frequency power is supplied to the workpiece to weld the opposite side surfaces at the jointing point so as to produce a metal tube member. The welding management apparatus comprises a camera positioned to have a visual field including the jointing point for producing a video signal indicative of an image including an area luminous with a pre-arc produced in the visual field. An image processor converts the video signal into a luminance distribution pattern. An inference unit is provided for inferring a defective welding condition based upon the luminance distribution pattern. The inference unit includes an alarm unit for producing an alarm when a defective welding condition is inferred.

Abstract: A welding management apparatus for use with a tube production machine. A workpiece fed from a roll of metal strip is formed in a tubular formation having side surfaces opposite to each other. An upsetting pressure is applied to joint the opposite side surfaces of the workpiece at a jointing point. A high frequency power is supplied to the workpiece to weld the opposite side surfaces at the jointing point so as to produce a metal tube member. The welding management apparatus comprises a camera positioned to have a visual field including the jointing point for producing a video signal indicative of an image including an area luminous with a pre-arc produced in the visual field. An image processor converts the video signal into a luminance distribution pattern. An inference unit is provided for inferring a defective welding condition based upon the luminance distribution pattern. The inference unit includes an alarm unit for producing an alarm when a defective welding condition is inferred.