Our objective was to explore the psychological origins of media gratifications by examining how pertinent psychological variables, based on McGuire's paradigm, help explain television viewing motivation. Hierarchical multiple regression of responses from a quota sample of 331 persons showed that psychological antecedents and control variables helped predict viewing motivation. Parasocial interaction, anxiety, creativity, and sensation seeking's disinhibition dimension were the most substantial predictors, along with television affinity and exposure. We discussed the implications of these findings.
An analytical procedure based on fracture mechanics is used to obtain the amount of residual stress in glass from measurements on the fracture surface. The technique utilizes the measurement of microcrack branching distances, known as the mirror-mist boundary, which occur at a critical crack branchin stress intensit (K,) value. This procedure shows that uArizYF(0) = uRrE + W,, where uA is the applied stress, r,,, is the microcrack branching radius, U, is the residual stress, Y,(O) is the crack-border correction factor, and Wo is a material constant based on K,,,. Thus, the equation is that of a straight line with the slope equal to the magnitude of the residual stress. Data for tempered glass from the literature are used to demonstrate the applicability of the technique.
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