A fiber-type image capturing apparatus includes a fiber optic, an optical rotating module, an outer tube, an air inlet hole, and an air outlet hole. The stateless PCE model includes one or more PCEs configured to compute one or more path segments through the domains in response to a path computation request issued by, e. The telephone set includes a holding part to hold the handset. Auxiliary grip holes are provided at the anchoring portion to enable disengagement of said anchoring portion even in case of breaking of the intermediate neck ; finally, a push rod is removably connected with an end of the anchoring portion itself. The determining includes outputting solving of the objective function obtained by linear programming solver for further processing.