Methods and systems are directed to detecting atrial tachyarrhythmia. A measure of image texture is calculated at two different scales, and the measurements are compared to determine how much high-resolution data the image contains compared to low-resolution data. Exhaust-gas aftertreatment system having a diaphragm pump of this type. The speaker system further includes an input port, and a controller operatively coupled with the input port. This invention thus relates to the seeds of soybean variety 92M50, to plants and parts thereof of variety 92M50, tissue culture methods and to methods for producing a soybean plant by crossing plants of the soybean variety 92M50 with another soybean plant, using 92M50 as either the male or the female parent. The candidate access path with the minimum sum of the weighted execution costs for all groups is determined as the optimal access path.