they represent a blend of surveillance work ( re , the prevalence survey of chronic trauma risk ) , in-depth studies of known workplace problems emphasizing undue physical and psychological job demands and their consequences ( re , stress from machine-paced work and musculoskeletal problems from repeated lifting ) , first evaluations of the consequences of new technology ( re , use of video display terminals ) , and finally problem-solving efforts ( re , the evaluation and field testing of the work practice guide for reducing lifting hazards and control technology assessment ) .
C0031809
physical
C0220825
evaluation