Disclosed herein are a mask for forming a landing plug contact hole to vertically expose an active region of a semiconductor substrate to a bit line or storage node contact, and a plug forming method using the same. A processing device includes a plurality of clusters allocated into a virtual private shared cache. The present invention also relates to a glycosylated methanethiosulfonate. A radiation induced transient pulse that affects one input signal may affect an output signal asserted by one logic structure; however, since the transient pulse doesn’t affect a corresponding input signal applied to the analogous logic structure, the dual path logic gate may output at least one correctly valued signal when a transient pulse occurs. Wherein the eigenvalue is related to the wavenumbers.