This disclosure relates to spinal fixation assemblies for use in spinal fixation constructs. A pop-out amount unit or operation calculates a pop-out amount indicating a perceived distance that at least a portion of the stereoscopic image pops out into space from the display panel, and a display controller or control operation controls display of the stereoscopic image with the calculated amount of pop-out on the display panel. Thereafter, the cement composition is introduced into the annulus between a pipe string and a well bore and the cement composition is allowed to set into a resilient impermeable solid mass. The voltage regulator is particularly suited to supplying a termination voltage to multiple line drivers in a DDR DRAM system, where the line drives require an active termination voltage to reduce power. An electrolyte-absorbing element is disposed inboard of the aperture, between the housing and the gas sensing electrode, in order to absorb electrolyte passing through the gas sensing electrode whilst maintaining a gas path through the electrolyte-absorbing element.