Topic Articles

Role Based Ontology integrates user design into systems engineering. It includes user definition, user roles, software & communications, hardware, data flow, & workstation UI with situation awareness. The process is described in context of designing a prototype drone operations center.

A 25-experiment review found mixed evidence for Tall Man Lettering. Some accuracy improvements, but varies by: user background, drug familiarity, orthographic similarity, position, exposure time.

Gestural interface performance depends on user, action, target, and environment interactions; for practitioners, effective design and evaluation requires accounting for these combined factors rather than isolated metrics.

Investigators determined the optimal design of a portable dynamic seat cushion. The cushion must be at least as wide as hip breath (personalized is suggested). The best shape was a ring-shaped air sac. Higher inflation increased muscle activation.

Sharable systems and activities (e.g. car sharing service) are not well covered in ergonomic training. Based upon the literature and the authors’ studies, they present a 8 primary guidelines along with associated example solutions.

Usability of handles was studied with lifting in a grocery store. The most preferred and best evaluated design are classic rounded rectangular handles, middle position, set at 0 degrees angle. Curved handles are less preferred and holes are least preferred; and both distribute weight less evenly.

Older adults discontinued smart speakers for different reasons, including disappointment, low relevance, privacy concerns, and independence, supporting a taxonomy of distinct technology disuse trajectories.