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Seniors Perception on Age-Friendly Aspects in Jeju Island, South Korea
고승한(Koh, Seung-Hahn),브로수아 낸시(Brossoie, Nancy),비미시 줄리아(Beamish, Julia),황은주(Hwang, Eunju),이서연(Lee, Seo-yeon) 한국주거학회 2015 한국주거학회 논문집 Vol.26 No.5
The purpose of this study was to compare urban and rural seniors' perceptions on the eight aspects of the World Health Organization Age-Friendly Cities (AFC) initiative on Jeju Island, South Korea. Face-to-face interviews using structured questionnaires were administered to 497 persons aged 65+ living on Jeju Island. Findings suggested that urban and rural held significantly different perceptions on five aspects of AFC (outdoor space and buildings, housing, civic participation and employment, community support and health services, and respect and social inclusion). Predictors of overall AFC score for all participants included age and living in a single-family home. Among urban dwellers, monthly household income and length of residence predicted AFC score while among rural seniors, predictors of AFC included educational attainment. To make communities more age-friendly, perspectives of older residents should be sought, shared, and reflected in policy and different strategies and priorities should be developed specific to urban and rural areas.
Jigeun Nam,Tawoo Kim,Jungkyu Park,Eunae Jo,Nadine Wolf,Thomas Strache,Julia Hahn,Schmidt Matthias,Christian Polak 한국정밀공학회 2024 International Journal of Precision Engineering and Vol.25 No.3
Amorphous metal is used in various applications due to high strength, elastic limit, and excellent soft magnetic properties, but fracture characteristics may deteriorate due to surface roughness or defects generated during manufacturing. So, in this study, we have investigated the effect of mechanical surface treatment on the fracture characteristics of amorphous metal foil. Unlike stainless steel sheets manufactured by the rolling process, amorphous metal foils have a rough surface and surface defects such as fine dimples and stripe patterns generated during the manufacturing process. After mechanical surface treatment such as brushing and grinding, surface roughness and mechanical properties of each specimen were compared. Through surface treatment, surface roughness was improved and defects such as dimple were removed. While the surface roughness Ra value of untreated sample was 0.6 on the wheel side and 0.4 on the air side, after surface treatment, the Ra value was lowered to less than 0.2 on both sides. Tensile tests were conducted to compare the mechanical characteristics of specimens. In case of the brushed or grinded samples, fracture strain increased from 1.5 to 1.8%, but no change in the elastic modulus was observed. Folding tests under repeated bending loads also showed that the durability of the surface treated sample was improved. This is considered to be an effect of eliminating surface defects that begin to crack.