Abstract: A facility is described for searching a corpus. The facility receives a query string, and identifies concepts represented in it. The facility accesses an ordered series of query strategy stages, and loops through them beginning with a first stage until a stage is selected. In each iteration of the loop, the facility accesses a set of attributes among the corpus's attributes that is specified by the stage, and performs a pre-search to determine an extent to which concepts among those identified are represented among the values of the attributes of the set. Based on the determined extent, the facility determines whether the query strategy stage is satisfied and, if so, selects it. The facility performs a search to generate a search result identifying items of the corpus having values of at least some of the attributes of the set that each represent at least one of the identified concepts.

Abstract: A large component for a rail vehicle includes a grid structure of bows and ribs, and paneling formed from the grid structure, where the ribs are formed as planar sheet metal parts that are butt-welded to the paneling, and the bows are configured as planar sheet metal parts that are butt-welded to the paneling, and where a C-rail is arranged on at least one of the bows.

Abstract: A side wall for a rail vehicle of differential structure, configured for fastening the lower end to a base frame and the upper end to a roof, includes a grid structure of bows and frames, and paneling of said grid structure, wherein the paneling is produced in one piece and has a vertical first section and a second section arranged at the upper end of the side wall and angled or bent with respect to the first section, and a cover plate which is oriented substantially perpendicularly in the installed position of the side wall and connected to the paneling at the upper end of the second section, and a plurality of ribs distributed along the longitudinal extent of the side wall and welded in within the intermediate space between the upper section of the paneling and the cover plate.