A tunnel notcher and guidewire delivery device is provided for creating a notch and positioning a guidewire within a bone tunnel. The improved respirations signal can be used for position correction in radiation therapy and imaging applications and can be displayed to a user in breath control techniques. The power levels of the transitional signals are varied over the course of the period in such a way as to reduce a level of instability in the network. A combination bar composition containing monoglyceride sulfonates of the present invention comprises fatty acid based toilet bars and monoglyceride sulfonates of the following General Formula 1: . The memory further includes computer readable code configured to cause the one or more processors to perform acts of: estimating current requests from the spectrum for the resources; comparing the current requests to the capabilities and characteristics; and allocating the resources with respect to the requests in conformance with a convex program implementation of Arrow-Debrue theory. For example, a video encoder adaptively switches the resolution of motion estimation and compensation between quarter-pixel and half-pixel resolutions; a corresponding video decoder adaptively switches the resolution of motion compensation between quarter-pixel and half-pixel resolutions.