Abstract: A collection unit of this demand prediction system collects a plurality of event information that have current or future events and location information indicating locations of the events. An extraction unit extracts event information indicating the event in a predetermined range, which includes the location of a shop from the plurality of event information collected by the collection unit based on the location information. A prediction unit predicts a demand of goods varying at the shop according to the event indicated by the event information extracted by the extraction unit, based on actual result information on a past event corresponding to the event indicated by the event information extracted by the extraction unit. An output unit outputs demand prediction information indicating the demand of goods predicted by the prediction unit.

Abstract: A lamp (1) including: a straight arc tube (10); and a pair of bases (20). Each base includes: a base body (30) fixed to an end of the arc tube (10); and a terminal attachment body (40) fixed to the base body (30) being shaped like a cap and including: a cylindrical body (31); and an opening (33). The terminal attachment body (40) includes a protuberant portion (43) that is oval and protrudes in a direction opposite to the arc tube along the tube axial. While the protuberant portion (43) protrudes through the opening (33), the terminal attachment body (40) is fixed to the base body (30) by the knurling method in which the peripheral of the end portion of the cylindrical body (31) is given a pressure so as to be knurled and embedded into the terminal attachment body (40).