Policy Design Based on Risk at Big Data Era: Case Study of Privacy Invasion in South Korea

2014 ◽  
Author(s):  
Hyejung Moon ◽  
Hyun Suk Cho ◽  
Seo Hwa Jeong ◽  
Jangho Park
Keyword(s):  
Big Data ◽  
South Korea ◽  
Policy Design ◽  
Privacy Invasion

scholarly journals LANDSAT BIG DATA ANALYSIS FOR DETECTING LONG-TERM WATER QUALITY CHANGES: A CASE STUDY IN THE HAN RIVER, SOUTH KOREA

2017 ◽  
Vol IV-1/W1 ◽  
pp. 83-89
Author(s):  
J. C. Seong ◽  
C. S. Hwang ◽  
R. Gibbs ◽  
K. Roh ◽  
M. R. Mehdi ◽  
...  
Keyword(s):  
Big Data ◽  
Data Analysis ◽  
South Korea ◽  
Chlorophyll A ◽  
Water Clarity ◽  
Big Data Analysis ◽  
Near Infrared Reflectance ◽  
Han River

Landsat imagery satisfies the characteristics of big data because of its massive data archive since 1972, continuous temporal updates, and various spatial resolutions from different sensors. As a case study of Landsat big data analysis, a total of 776 Landsat scenes were analyzed that cover a part of the Han River in South Korea. A total of eleven sample datasets was taken at the upstream, mid-stream and downstream along the Han River. This research aimed at analyzing locational variance of reflectance, analyzing seasonal difference, finding long-term changes, and modeling algal amount change. There were distinctive reflectance differences among the downstream, mid-stream and upstream areas. Red, green, blue and near-infrared reflectance values decreased significantly toward the upstream. Results also showed that reflectance values are significantly associated with the seasonal factor. In the case of long-term trends, reflectance values have slightly increased in the downstream, while decreased slightly in the mid-stream and upstream. The modeling of chlorophyll-a and Secchi disk depth imply that water clarity has decreased over time while chlorophyll-a amounts have decreased. The decreasing water clarity seems to be attributed to other reasons than chlorophyll-a.

Developing a model of home-based primary care in South Korea: A 1.5-year case study

2020 ◽  
Vol 40 (6) ◽  
pp. 1403-1428
Author(s):  
Chang-O Kim ◽  
Jongwon Hong ◽  
Mihee Cho ◽  
Eunhee Choi ◽  
Soong-nang Jang
Keyword(s):  
Primary Care ◽  
South Korea ◽  
Home Based Primary Care ◽  
Home Based
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