A method and apparatus for utilizing heat-generating articles to provide active heating of a user’s hand, wherein a heated article is placed near the inside of a user’s wrist to cause the user’s body temperature to be maintained or actively changed. Input variables of a real automatic warehouse system are set in a virtual automatic warehouse system. One or more wavelength-conversion materials, in the embodiments of the present invention, are disposed remotely from the light source, and used to absorb radiation in one spectral region and emit radiation in another spectral region. Each side panel includes a lower section and an upper section foldably attached thereto. Accordingly, whether or not access is permitted can be judged promptly and a smooth handover can be realized. A location bookmark includes a bookmark location and bookmark content, the bookmark location being the current location and the bookmark content including data associated with the current location.