Abstract: A method of providing semantically relevant, ranked search results is described. An assignment of an occurrence of a term within a document to an ontological node is received based on usage of the occurrence of the term within the document. An accuracy value associated with the assignment is determined by comparing the assignment with a baseline assignment. A consistency value associated with an assignor is determined based on a repeatability of a plurality of assignments by the assignor. An assignor relevance score for the occurrence of the term is determined by statistically combining the accuracy value and the consistency value. An overall semantic relevance value for the occurrence of the term is determined by statistically combining the assignor relevance score determined for a plurality of assignors. The documents are ranked based on the overall semantic relevance value and presented in response to a search request.

Abstract: A method of controlling the attitude of a vehicle in space relative to three reference axes, the method consisting: initially in adjusting the attitude of the vehicle in conventional manner to desired angles on the basis of a two-axis detector which points towards a reference heavenly body; and subsequently in adjusting the attitude of the vehicle about the third reference axis by using the speeds of rotation of the reaction wheels which reflect conservation of the total angular momentum of the vehicle to perform an angle measurement about the third axis.

Abstract: A method of controlling the attitude of a vehicle in space relative to three reference axes, the method consisting:

Abstract: Apparatus is provided for automatic production testing of large digital circuit modules. A test station, under computer control, applies test bit patterns and clock pulses to the module under test, analyzes the resultant outputs, and isolates any fault found to one or several IC's. The test station contains power supplies and air cooling for the module, and a keyboard display and printer for use by the test operator. Test programs are developed off-line and are loaded from magnetic tape into a disk pack where they are available to the computer. The flip-flops on the module to be tested are used as an extension of the test station through the addition on the module of circuitry to allow the flip-flops to be reconfigured from their normal circuit configuration into a shift register connected at one end to one of the module connector pins.