Abstract: An electronically controlled substrate working apparatus, such as a CNC controlled milling machine, drill press or lathe. The apparatus comprises a tool configured to remove material from the substrate, a spindle motor coupled to the tool, a feed motor configured to cause relative movement between the tool and the substrate along a feed path, a controller configured to control the spindle motor and the feed motor and a tool load measurement structure configured to provide a tool load value to the controller. The controller is configured to compare the load on the tool with stored or calculated first compliance values for a first location along the feed path and second compliance values for a second location along the feed path.

Abstract: An electronically controlled substrate working apparatus, such as a CNC controlled milling machine, drill press or lathe. The apparatus comprises a tool configured to remove material from the substrate, a spindle motor coupled to the tool, a feed motor configured to cause relative movement between the tool and the substrate along a feed path, a controller configured to control the spindle motor and the feed motor and a tool load measurement structure configured to provide a tool load value to the controller. The controller is configured to compare the load on the tool with stored or calculated first compliance values for a first location along the feed path and second compliance values for a second location along the feed path.

Abstract: The present disclosure pertains to a transmitter for waking up electronic systems with a first signal generator which is designed to generate a carrier signal with a first frequency, a second signal generator which is designed to generate an informational signal with a second frequency, a single-sideband modulator which is designed to modulate the information signal by the carrier signal, and a transmission device which is designed to emit the generated carrier signal and the modulated information signal. The present disclosure also pertains to a receiver, an aircraft and spacecraft and a method.

Abstract: Memory may be managed by a garbage collector. The memory may contain a data structure and an index. The data structure may include a plurality of objects. The index may index a plurality of the objects in the data structure. For each object which it indexes, the index may contain a key field and a weak reference to the object. The key field may be indicative of an attribute of the object. The weak reference to the object may be associated with the key field. The weak reference may have a configuration which is not followed by a pointer tracer of the garbage collector when the garbage collector seeks to determine which of the objects in the data structure are no longer reachable from outside of the data structure during a memory reclamation process. This may insure that the index does not prevent the memory occupied by any unreachable object in the data structure from being reclaimed by the garbage collector during the memory reclamation process, even though the object is still referenced by the index.

Abstract: A combustion is performed with a fuel which has been reformed by mixing with combustion products and/or water steam to supress NO.sub.x formation.