Abstract: An information processing apparatus disclosed has a controller configured to execute the processing of accepting a request for retrieving a target vehicle body unit that is laid at a specific place, selecting a chassis unit for retrieval from among chassis units in the state separated from any vehicle body unit, the chassis unit for retrieval being a chassis unit to be used to retrieve the target vehicle body unit, and sending a retrieval command to the chassis unit for retrieval, the retrieval command being a command to retrieve the target vehicle body unit.

Abstract: Provided is an optical module that accurately observes the overall intensity of visible light having a relatively short wavelength and propagating through an optical fiber, and is suitable for downsizing an optical device. An optical module provided in an optical fiber connected to an optical component capable of inputting or outputting light. The optical module includes: a case body that forms a closed space C in which a part of the optical fiber is accommodated; a fiber fixing portion that fixes the optical fiber to predetermined position and shape inside the case body; and a photodiode that is attached inside the case body at a position capable of receiving radiation light radiated from the optical fiber fixed to the fiber fixing portion.

Abstract: A developing device includes a developer bearer rotatable in a rotation direction and forming a developing range, a holder, and an entrance seal. The holder has a facing face facing the developer bearer upstream from the developing range in the rotation direction, a support face defining a part of an outer face of the developing device, and a relay face extending from one end of the support face to one end of the relay face connected to the facing face to form an acute tip portion closer to the developing range than the one end. The entrance seal has a free end projecting from the one end as a cantilever, and a length of the entrance seal from a tip of the free end of the entrance seal to the one end is shorter than a length of the relay face from the acute tip portion to the one end.

Abstract: A radio system has silence periods in which wave transmission from a terminal is stopped and in which a base station measures external noise power. The base station includes a receiver for receiving a signal from the terminal, and a controller that has preset frequency information representing a frequency of diagnosing the receiver to a measurement frequency of external noise power, and diagnoses normality of the receiver by using one silence period out of plural silence periods on the basis of the frequency information while measuring the external noise power by using the other silence periods. When the receiver is diagnosed, the external noise cannot be measured during this silence period, and thus during this silence period the external noise measured during the just preceding silence period is held and applied as external noise under the diagnosis of the receiver.

Abstract: A radio system has silence periods in which wave transmission from a terminal is stopped and in which a base station measures external noise power. The base station includes a receiver for receiving a signal from the terminal, and a controller that has preset frequency information representing a frequency of diagnosing the receiver to a measurement frequency of external noise power, and diagnoses normality of the receiver by using one silence period out of plural silence periods on the basis of the frequency information while measuring the external noise power by using the other silence periods. When the receiver is diagnosed, the external noise cannot be measured during this silence period, and thus during this silence period the external noise measured during the just preceding silence period is held and applied as external noise under the diagnosis of the receiver.

Abstract: In a mobile communication system including a plurality of base stations 10 and an MS position administrating station 30 connected to each of the base stations via a communication network, at least one of the base stations detects an arrival angle of a position detection signal from a mobile station and an average received power or propagation distance, and transmits the detected values as position detection parameters to the MS position administrating station, and the MS position administrating station detects the position of the mobile station on the basis of the position detection parameters and map information of an area including the base station.