Some kinematic structures suitable for use in robot manipulator designs are constructed in terms of components. General properties of kinematic structures are considered and a method for combining two structures given. Two types of component, namely actuation and distribution components, are specified. Modification of the kinematic structures is effected by transfer of drives. Existing designs for robot manipulators are examined in terms of their kinematic structures and some new designs are generated.
Exposure to modern media alters cultural values and individual identities. Little is known, however, about whether and how media use alters cultural socialization processes in family relationships. In this study, 20 urban Thai parents of adolescent children took part in individual interviews in which they discussed media use in their families. Thematic analysis of interview data indicates that adolescents act as cultural brokers for their parents in a media-driven culture, and that this brokerage engenders adolescent agency, power, and the renegotiation of traditional age-based hierarchies in the Thai context. Data also indicate that parental power and authority are maintained and reasserted by way of parents placing restrictions on adolescent media use and mobilizing their children’s technological desires as opportunities to teach culturally salient lessons about necessity—a value that reflects central tenets of the late Thai King Bhumibol’s Sufficiency Economy and of Buddhism’s Four Noble Truths. Findings suggest that media use can both transform and maintain traditional cultural values and family dynamics in northern Thailand. More broadly, this study carries implications for the psychological science of globalization by applying the concept of cultural brokerage to communities undergoing rapid technological change.
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