0000354204-99-000004 SC 13G 1 19990211 ANALYSIS & TECHNOLOGY INC 0000310876 8711 952579365 CT 0331 SC 13G 34 005-38053 99530852 TECHNOLOGY PARK RTE 2 PO BOX 220 NORTH STONINGTON CT 06359 2035993910 TECHNOLOGY PARK RTE 2 P O BOX 220 NORTH STONINGTON CT 06359 DIMENSIONAL FUND ADVISORS INC 0000354204 0000 22370029 IL 1231 SC 13G 1299 OCEAN AVE 11TH FLOOR SANTA MONICA CA 90401 3103958005 1299 OCEAN AVENUE 11TH FLOOR SANTA MONICA CA 90401 SC 13G 1 000035420499000004-001-seq1-sc-13g.txt 1998 SCHEDULE 13G - ANALYSIS & TECHNOLOG