Atomic Layer Deposition for Semiconductors
Atomic Layer Deposition for Semiconductors

Author: Cheol Seong Hwang

Publisher: Springer Science & Business Media

Published: 2013-10-18

Total Pages: 266

ISBN-13: 146148054X

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Offering thorough coverage of atomic layer deposition (ALD), this book moves from basic chemistry of ALD and modeling of processes to examine ALD in memory, logic devices and machines. Reviews history, operating principles and ALD processes for each device.

Geopolitical Risk on Stock Returns: Evidence from Inter-Korea Geopolitics
Geopolitical Risk on Stock Returns: Evidence from Inter-Korea Geopolitics

Author: Seungho Jung

Publisher: International Monetary Fund

Published: 2021-10-22

Total Pages: 36

ISBN-13: 1557759677

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We investigate how corporate stock returns respond to geopolitical risk in the case of South Korea, which has experienced large and unpredictable geopolitical swings that originate from North Korea. To do so, a monthly index of geopolitical risk from North Korea (the GPRNK index) is constructed using automated keyword searches in South Korean media. The GPRNK index, designed to capture both upside and downside risk, corroborates that geopolitical risk sharply increases with the occurrence of nuclear tests, missile launches, or military confrontations, and decreases significantly around the times of summit meetings or multilateral talks. Using firm-level data, we find that heightened geopolitical risk reduces stock returns, and that the reductions in stock returns are greater especially for large firms, firms with a higher share of domestic investors, and for firms with a higher ratio of fixed assets to total assets. These results suggest that international portfolio diversification and investment irreversibility are important channels through which geopolitical risk affects stock returns.