A new approach to radar imaging is described herein, in which radar pulses are transmitted with an uneven sampling scheme and subsequently processed with novel algorithms to produce images of equivalent resolution and quality as standard images produced using standard synthetic aperture radar waveforms and processing techniques. In combination these traits set \u2018WALEUPHRUD\u2019 apart from all other existing varieties of Euphorbia known to the inventor. According to one method, a service generates executable code based on the piece of clinical knowledge. There is also provided a method for welding together two metal components to form a part or a whole of a spar for a wing for an aircraft and a spar so created. Another embodiment of the present invention is a system comprising a servo controller for employing and selecting a disk controller that has a least expected amount of written-in run-out among a set of controllers. For laser printers, calibration data processing results may be detected by a detector that is disposed to correspond physically to the recording medium so that characteristics such as position and intensity of a laser beam at the detector corresponds to that of a laser beam at the recording medium.