Shamrock Technologies, Inc., announced that it has named Steven M. Parker as its president and COO. William B. Neuberg will remain chairman and CEO.      Mr. Parker, a 30-year veteran of advanced materials industries, has held key executive positions at the former Allied-Signal Corp. (now Honeywell), the Ausimont Division of Montedison SpA, Saint-Gobain and, most recently, as division president and commercial director for UK-based Oxford Instruments.      With his background in global busine...