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What should be considered to redesign Netflix for Middle-aged South Korean People?
Wonjae Lee,Juwhan Han,Taeyoung Go,Makida Gebregiorgis Tesfaye 한국HCI학회 2022 한국HCI학회 학술대회 Vol.2022 No.2
As Netflix is getting increasingly popular in COVID-19 situation, this study aims to understand the needs and wishes of the middle-aged people in South Korea so that the service can deliver better user experience for the user group. A main research question was formulated, what designers can do to improve the current experience of Netflix users aged 40-60. To answer the question, user interviews, narration, and collage making were adopted as method. Those who were familiar with the existing broadcasting media services were recruited. By studying the middle-aged, it was discovered that the absence of various genres and the inconvenience of using buttons were problematic, and also that they wanted to feel experiences that could not be experienced in reality and various emotions that communicate with reality through Netflix. The implications and limitations of the study were discussed at the end.
Wonjae Lee,Yeonyee E. Yoon,Ohkyung Kwon,이희선,Hyo Eun Park,Eun Ju Chun,Su-Yeon Choi,Goo-Yeong Cho,Hyuk-Jae Chang 대한심장학회 2019 Korean Circulation Journal Vol.49 No.5
Background and Objectives: Coronary artery calcium (CAC) scoring in the asymptomatic population can improve cardiovascular risk prediction. We aimed to assess CAC progression and the impact of coronary risk factors on the CAC progression rate in asymptomatic Korean individuals with a baseline CAC score of zero. Methods: The study population was derived from the Korea Initiatives on Coronary Artery Calcification (KOICA) registry: a retrospective, single ethnicity, multicenter registry of asymptomatic individuals who underwent CAC scoring as a part of a health checkup. Individuals with at least two CAC scores and an initial score of zero were included. CAC progression was defined as [√CAC score (follow-up) − √CAC score (baseline)] ≥2.5. The 10-year atherosclerotic cardiovascular disease (ASCVD) risk was calculated. Results: Among 6,268 participants (mean age, 48.0±7.1 years; male, 80.5%), 719 (11.5%) experienced CAC progression during follow-up (median, 109 months; interquartile range, 78–208 months). The CAC progression rate was 0.3%, 1.9%, 4.3%, 8.6%, and 16.7% in years 1–5, respectively. The chance of CAC progression at 5 years was 13.1%, 22.0%, and 27.9% for individuals with a 10-year ASCVD risk of <5%, ≥5% but <7.5%, and ≥7.5%, respectively. A multivariable analysis revealed age, male sex, waist circumference, diabetes, and low-density lipoprotein cholesterol level as independently associated with annualized CAC progression (p<0.001, p=0.017, p=0.025, p=0.032, and p=0.003, respectively). Conclusions: The probability of CAC progression is very low in Korean individuals with a CAC score of zero. However, the risk of CAC progression increases nonlinearly over time, and increases as the 10-year ASCVD risk increases.