Abstract: Accelerated outdoor exposure test equipment is disclosed. In the accelerated outdoor exposure test equipment, a specimen is moved for an accelerated outdoor test or an artificial radiation source to irradiate artificial light is moved at sunrise or sunset. Accordingly, the specimen is exposed to natural light such as sunlight during daytime and exposed to artificial light during nighttime.

Abstract: Disclosed are an apparatus and a system for managing circadian rhythm. The apparatus includes an illuminance measuring portion which measures a bio illuminance value of external light using a circadian lambda filter which passes the external light along according to a circadian rhythm sensitivity curve and a visual lambda filter which passes the external light along according to a visual sensitivity curve, a controller which outputs a control signal for reinforcing a user's circadian rhythm on the basis of the bio illuminance value, and a circadian rhythm reinforcing portion which emits light of a circadian wavelength band toward the user according to the control signal.

Abstract: Disclosed are an apparatus and a system for managing circadian rhythm. The apparatus includes an illuminance measuring portion which measures a bio illuminance value of external light using a circadian lambda filter which passes the external light along according to a circadian rhythm sensitivity curve and a visual lambda filter which passes the external light along according to a visual sensitivity curve, a controller which outputs a control signal for reinforcing a user's circadian rhythm on the basis of the bio illuminance value, and a circadian rhythm reinforcing portion which emits light of a circadian wavelength band toward the user according to the control signal.

Abstract: Accelerated outdoor exposure test equipment is disclosed. In the accelerated outdoor exposure test equipment, a specimen is moved for an accelerated outdoor test or an artificial radiation source to irradiate artificial light is moved at sunrise or sunset. Accordingly, the specimen is exposed to natural light such as sunlight during daytime and exposed to artificial light during nighttime.

Abstract: A method and system to perform a handover using mutual authentication in a Wireless Broadband (WiBro) network includes: generating a temporary number of a mobile station needing handover from a first base station to a second base station and requesting a handover from the first base station; transferring a handover request message, including a field for storing the temporary number of the mobile station, from the first base station to the second base station according to the handover request of the mobile station; transferring a handover response message, including respective fields for storing the mobile station's temporary number and the second base station's certification encoded using an authentication key received from an authentication server, from the second base station to the first base station; verifying the encoded temporary number of the mobile station and the encoded certification of the second base station in the handover response message transferred from the second base station, and transferrin