Abstract: A communication terminal that receives at least one of image data and audio data from at least one other communication terminal via a network, the communication terminal including circuitry to generate log data in response to occurrence of an event at the communication terminal, and transmit the generated log data to an accumulation apparatus each time the event occurs.

Abstract: A communication system includes a plurality of communication terminals to transmit communication information and a communication controller. Each of the communication terminals includes: a generator to generate log information on communication between the communication terminals; a storage to store log information generated by the generator; and a transmitter to upload log information that is capable of being uploaded depending on a communication line band used for the communication information. The communication controller includes a communication management server configured to control transmission of the communication information and a log upload server, wherein the communication controller is configured to distribute the log information uploaded by the transmitter to the log upload server.

Abstract: An exhaust gas recirculation control method of an internal combustion engine, the internal combustion engine including: a turbo supercharger; an exhaust gas recirculation passage communicating an exhaust passage with an intake passage at a part upstream of a compressor of the turbo supercharger; an exhaust gas recirculating amount control valve disposed in the exhaust gas recirculation passage; a differential pressure generating valve disposed upstream of a merging portion of fresh air gas and exhaust gas in the intake passage; and a controller adapted to control an opening of the exhaust gas recirculation amount control valve and an opening of the differential pressure generating valve, wherein in the method, the controller cooperatively controls the opening of the exhaust gas recirculation amount control valve and the opening of the differential pressure generating valve to make an exhaust gas recirculation ratio change to a target exhaust gas recirculation ratio at a change rate that prevents abnormal comb

Abstract: A communication terminal that receives at least one of image data and audio data from at least one other communication terminal via a network, the communication terminal including circuitry to generate log data in response to occurrence of an event at the communication terminal, and transmit the generated log data to an accumulation apparatus each time the event occurs.

Abstract: A communication system includes a plurality of communication terminals to transmit communication information and a communication controller. Each of the communication terminals includes: a generator to generate log information on communication between the communication terminals; a storage to store log information generated by the generator; and a transmitter to upload log information that is capable of being uploaded depending on a communication line band used for the communication information. The communication controller is configured to distribute the uploaded log information to a server different from a server to control transmission of the communication information.

Abstract: An exhaust gas recirculation control method of an internal combustion engine, the internal combustion engine including: a turbo supercharger; an exhaust gas recirculation passage communicating an exhaust passage with an intake passage at a part upstream of a compressor of the turbo supercharger; an exhaust gas recirculating amount control valve disposed in the exhaust gas recirculation passage; a differential pressure generating valve disposed upstream of a merging portion of fresh air gas and exhaust gas in the intake passage; and a controller adapted to control an opening of the exhaust gas recirculation amount control valve and an opening of the differential pressure generating valve, wherein in the method, the controller cooperatively controls the opening of the exhaust gas recirculation amount control valve and the opening of the differential pressure generating valve to make an exhaust gas recirculation ratio change to a target exhaust gas recirculation ratio at a change rate that prevents abnormal comb

Abstract: A workpiece which is made by integrally combining an outer member and an inner member through hemming is manufactured efficiently in a common apparatus. An outer member and an inner member are combined to alternately subassemble two kinds of workpieces at a common subassembly station. A hemming station is disposed on a downstream side of the subassembly station in a manufacturing line. In this hemming station, a first hemming apparatus for the first kind of workpiece and a second hemming apparatus for the second kind of workpiece are disposed in a side by side relationship with each other. The first kind of workpiece subassembled in the subassembly station and the second kind of workpiece are alternately fed to the first hemming apparatus and the second hemming apparatus by a workpiece feeding robot.