An ergonomic evaluation of Pop-top can opener design

Abstract

Pop-top cans are simple to use because they do not require tools, but bring inherent problems with opening primarily for the older population. The development of different opening devices aims to improve accessibility for the older population by reducing the frustrations and discomforts associated with this style of packaging. A study of 24 individuals, showed different preferences in opening methods between older and younger individuals. Furthermore, determining time to open, EMG muscle activation, and wrist angle revealed that some objective measures related to subjective preferences. Younger individuals believed that the increased convince of a pop top, greatly outweighed any pain they had to endure. The elderly, however, preferred to use a simple opening device to transfer the movement away from the fingers to the wrist. Because of the reduction of precision movements, the elderly preferred to use the J-popper opening device. The difference in preferred opening methods between age groups shows that packaging designers must consider the needs of all members of the population.

The Effectiveness of Active Shooter Responses for Civilians and Law Enforcement

“…Along with the number of incidents increasing, the number of casualties per incident has simultaneously risen from 6.23 casualties per incident between 2000 and 2013 to 10.89 casualties per incident between 2014 and 2018. Of those 333 incidents, 62 (18.6%) have taken place in an educational institution (Kindergarten to Higher Education), leading to 179 killed and 240 wounded between 2000-2019(FBI, 2021.…”

“…An alternative to the suggested response posed by the New England Journal of Medicine was "secure, preserve, fight," where professionals would first make sure that they and their patients were in a safe location, then care for their patients and potentially fight if necessary (Inaba et al, 2018). As it has been shown time and time again, without training and evaluations tailored to specific populations, they can be ineffective, inaccurate, and even dangerous (Fales et al, 2021;R. Stone et al, 2019;Tabary et al, 2021;Tetteh et al, 2021;Wang et al, 2022) while the personalized training methods can also improve performances (Middelcoop et al, 2021).…”