송영훈 교수

Abstract This study compared the historical simulations and future projections of precipitation and temperature of Coupled Model Intercomparison Project (CMIP)5 and CMIP6 general circulation models (GCMs) to quantify the differences in the projections due to differences in scenarios. Five performance indicators were used to quantify the model reproducibility of the observed precipitation levels at 22 stations for the historical period of 1970–2005. The percentages of change in precipitation and

This study quantified the uncertainties in historical and future average monthly precipitation based on different bias correction methods, General Circulation Models (GCMs), Representative Concentration Pathways (RCPs), projection periods, and locations within the study area (i.e., the coastal and inland areas of South Korea). The GCMs were downscaled using deep learning, random forest, and nine quantile mapping bias correction methods for 22 gauge stations in South Korea. Data from the Korean M

Although ursolic acid isolated from Oldenlandia diffusa (Rubiaceae) was known to have anticancer activities in prostate, breast and liver cancers, the underlying mechanism of ursolic acid in ovarian cancer cells was not investigated so far. In the present study, the apoptotic mechanism of ursolic acid was elucidated in SK-OV-3 ovarian cancer cells by 2,3-bis(2-methoxy-4-nitro-5-sulphophenyl)-2H-tetrazolium-5-carboxanilide (XTT) assay, cell cycle analysis and Western blotting. Ursolic acid exerte

A low-power forwarded-clock I/O transceiver architecture is presented that employs a high degree of output/input multiplexing, supply-voltage scaling with data rate, and low-voltage circuit techniques to enable low-power operation. The transmitter utilizes a 4:1 output multiplexing voltage-mode driver along with 4-phase clocking that is efficiently generated from a passive poly-phase filter. The output driver voltage swing is accurately controlled from 100–200 <formula formulatype="inline" xmlns

Effects of Y 2 O 3 on the temperature stability of acceptor-doped BaTiO 3 dielectrics were studied. The sample doped with 1 mol% Y 2 O 3 exhibited the highest dielectric constant. A substantial reduction in grain size was observed in the specimen with 1 mol% Y 2 O 3 (∼0.6 µm), compared with the undoped specimen (∼1.5 µm). Each specimen with greater than 1 mol% Y 2 O 3 showed a slight difference in grain size, compared with 1 mol% Y 2 O 3 . As the Y 2 O 3 content was increased, the Curie point pr

이 연구는 난민의 대량이주를 둘러싼 국제사회의 인도주의와 난민 수용국의 난민정책과의 갈등을 분석하고 있다. 사하라이남 아프리카 국가들 중에서 난민 수용에 가장 적극적이었던 케냐 정부가 소말리아 난민의 유입에 대응하는 난민정책을 중심으로 난민정책의 안보화 현상을 설명하고 있다. 즉 케냐 정부는 자국 내에서 발생하는 테러로 인하여 국내에 거주하는 소말리아 난민들의 문제를 인도주의에 따른 지원을 통해 해결하려는 정책보다는 점차 소말리아 난민들이 국가안보를 위협하는 요인으로 인식하는 안보우선 정책을 채택하고 있다. 케냐정부가 난민문제를 안보화하면서 전 세계에서 가장 오래되고 가장 큰 난민캠프인 다다브 캠프에 거주하는 소말리아 난민을 송환시키기 위해 케냐 정부는 소말리아 정부와 난민송환협정을 2013년에 맺었다. 2011년 이후 알샤바브에 의해 빈번하게 발생하는 테러로 인하여 케냐 정부가 소말리아 난민의 대량 유입을 안보의 문제로 삼고 난민캠프를 폐쇄하고자 하는 것이다. 케냐 정부에 의한 난

Abstract This study quantified the uncertainties of future drought projections in the South Korea case by means of the reliability ensemble averaging (REA) of 10 GCM equivalents of the Coupled Model Intercomparison Project, Phases 5 and 6 (CMIP5 and CMIP6). Two meteorological drought indices, the Standardized Precipitation Index (SPI) and the Standardized Precipitation‐Evapotranspiration Index (SPEI) for Representative Concentration Pathway (RCP) 4.5 and RCP8.5 of CMIP5 and Shared Socioeconomic

Low-power (LP) high-speed serial I/O transmitters which include equalization to compensate for channel frequency-dependent loss are required to meet the aggressive link energy-efficiency targets of future systems. This brief presents an LP serial-link-transmitter design that utilizes an output stage which combines a voltage-mode driver, which offers low static-power dissipation, and current-mode equalization, which offers low complexity and dynamic-power dissipation. The utilization of current-m