data envelopment analysis

Thesis(Master) -- KDI School: Master of Public Policy, 2020This paper analyzes the efficiency of internet-only banks in South Korea during the period starting from 2017 to 2019. To use the data envelopment analysis, we examine the efficiency rate of Korea’s banking industry. The data envelopment analysis(DEA) was generally used to apply to measure the efficiency of banks. From the perspective taken, variables alter to inputs and outputs. Herein the operating and intermediation approaches were applied. Analysis on two internet-only banks in Korea, the results indicate that Kakao bank efficiencies tend to increase. However, the K-bank’s efficiencies were goes down as time goes by. Considering this situation, the role of government is gaining importance in promoting innovation enabled by new technologies.Chapter 1 Introduction Chapter 2 Literature review Chapter 3 Research Method and Data Chapter 4 Results Chapter 5 ConclusionmasterpublishedSeo-Jin LE

Current-induced synchronized switching of magnetization

We investigate current-induced magnetization switching for a multilayer structure that allows a reduced switching current while maintaining high thermal stability of the magnetization. The structure consists of a perpendicular polarizer, a perpendicular free-layer, and an additional free-layer having in-plane magnetization. When the current runs perpendicular to the structure, the in-plane free-layer undergoes a precession and supplies an internal rf field to the perpendicular free-layer, resulting in a reduced switching current for one current polarity. For the other polarity, the in-plane free-layer almost saturates perpendicular to the plane and acts as another perpendicular polarizer, which also reduces the switching current.Comment: 18 pages, 4 figure