Abstract: An information gathering system includes: an ID gathering mechanism, provided at a transmitter side node, that generates a collective identifier from one or a plurality of individual identifiers of respective management targets, each of the individual identifiers being generated according to a state of a corresponding management target; and an ID analysis mechanism, provided at a receiver side node, that restores an individual identifier from the collective identifier and specifies a management target based on the restored individual identifier.

Abstract: An information gathering system includes: an ID gathering mechanism, provided at a transmitter side node, that generates a collective identifier from one or a plurality of individual identifiers of respective management targets, each of the individual identifiers being generated according to a state of a corresponding management target; and an ID analysis mechanism, provided at a receiver side node, that restores an individual identifier from the collective identifier and specifies a management target based on the restored individual identifier.

Abstract: A valve operating device for operating an intake or exhaust valve in an internal combustion engine includes a cam having a cam profile including a valve lifting portion for applying a force to open the engine valve and a base circle portion for allowing the valve to be closed, the cam profile having a valve opening point and a valve closing point between the valve lifting portion and the base circle portion, a cam follower slidably engaging the cam, and a hydraulic lash adjuster combined with the cam follower for eliminating any gap between the means and the engine valve. The base circle portion has a gradient cam surface or a combination of different gradient cam surfaces for canceling out valve-lifting radial displacement of the base circle portion.

Abstract: A method and device for forming a warp beam of uniform diameter by feedback control of winding tension, in which a signal obtained from local winding tensions, each corresponding to a tension of a yarn at a certain widthwise position, are utilized for adjusting the position and width of a reed so that distribution of the warp on the beam is improved and an intra-beam diameter difference is compensated. One of the signals obtained from the local winding tensions is utilized for adjusting the rotational speed of rollers so that an inter-beam diameter difference is compensated. Thus, a warp beam without intra- or inter-beam diameter difference can always be produced.