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31.
Solji Nam Jungwoo Shin Jaena Ryu Hanee Ryu 《Business Strategy and the Environment》2021,30(1):478-488
Owing to global warming, ice in the Arctic Ocean has shrunk by 2.7% every 10 years since 1978, resulting in tremendous damage. This study uses the Cobb–Douglas production function to analyze the impact of abnormal weather on energy industry production using temperature and precipitation indicators. In particular, the government identified the impact of abnormal weather conditions on manufacturing and public works related to the Korean energy industry. The results showed that the numbers of freezing days and heavy rain days adversely affect public works, whereas hot and cold days and heavy rain days all positively affect the production of coal, petroleum, and chemical products. These results also led to regional risk assessments of the energy industry. This study can help in developing the 2030 industry climate change adaptation plan. 相似文献
32.
33.
Adopting homothetic variable returns to scale functional specifications, this study identifies the returns to scale in the
aggregate production functions of four East Asian newly industrialized economies–Hong Kong, Korea, Singapore, and Taiwan–and
the Group of Five economies based on a maximum likelihood estimation. The study finds evidence of increasing returns in the
early developmental stage of the East Asian economies. Separating out the scale contribution from the non-scale factor contributions,
the decomposition of the sources of East Asian economic growth differs significantly from the conventional constant returns
to scale results, indicating that the role of technical progress is overestimated when constant returns to scale is assumed. 相似文献
34.
ABSTRACTIn this study, we examine return spillover, volatility transmission, and cojump behavior between the U.S. and Korean stock markets. In particular, we focus on cojump behavior between the two markets in order to explain the transmission of unexpected shocks. We find that the U.S. stock market causes return spillover effects in the Korean stock market, and there is significant volatility transmission between the two markets. Importantly, we find a stronger association in size, as compared with intensity, of cojumps between the U.S. and Korean stock markets, particularly during the recent financial crisis. 相似文献
35.
The concept of corporate sustainability management (CSM) has been widely addressed in academic and business fields. Many companies now implement CSM, and CSM performance can be a good reference for investors to assess a company. In spite of its importance and prevailing presence, few studies have been done on the sustainability management of telecommunications companies. In this paper, we explore the sustainability of two Korean telecommunications companies (telcos) by developing and applying a new integrated sustainability management index. We expect that our findings can be a good start for further practices and research in sustainability management for telecommunications services. 相似文献
36.
This study examines if informed trading is present in the index option market by analyzing the KOSPI 200 options, the most actively traded derivative product in the world. The spread decomposition model developed by Madhavan, Richardson, and Roomans (1997) is utilized and the adverse‐selection cost component of the spread estimated by the model is then used as a proxy for the degree of informed trading. We find that adverse‐selection costs constitute a nontrivial portion of the transaction costs in index options trading. Approximately one‐third of the spread can be accounted for by information asymmetry costs. A further analysis indicates that adverse‐selection costs are positively related with option delta. Our regression analysis shows that option‐related variables are significantly associated with estimated information asymmetry costs, even when controlling for proxies for informed trading in the index futures market. Finally, we find the evidence that foreign investors are better informed compared to domestic investors and that domestic institutions have an edge in terms of information over domestic individuals. © 2008 Wiley Periodicals, Inc. Jrl Fut Mark 28:1118–1146, 2008 相似文献
37.
Hyun-Sun Ryu 《The Service Industries Journal》2016,36(3-4):81-101
This study aims to identify various innovation patterns and understand their effects on firm performance across business service sectors. By collecting empirical data from 198 Korean business services firms, we explore these firms’ major innovation patterns, conceptualized as combinations of different service innovation dimensions: service concept, service delivery, customer interaction, and technology. Then, in accordance with the innovation patterns they display, we group these firms into four clusters: ‘service delivery-based high-technology', ‘service delivery and customer interaction-integrated', ‘customer interaction-based high-technology', and ‘strongly balanced’ innovators. Last, we investigate whether these patterns influence firm performance. Our findings are three-fold: (1) the innovation patterns in business service firms result from the creation of new combinations of major service innovation dimensions, (2) four independent innovation patterns emerge in business service firms, and (3) these patterns lead to different levels of firm performance. Practically, our findings highlight the importance of highly qualified employees, customer interaction, and technology in improving financial performance. 相似文献
38.
Using the high‐quality intraday transaction data from 2001–2012, we investigate changes in stock market liquidity in response to the monetary policy announcements of the Bank of Korea (BOK). We find that liquidity impairment associated with informed trading occurs prior to the announcements but it disappears subsequent to the global financial crisis. In addition, liquidity impairment appears to become more severe with insufficient experts' predictability and accuracy rather than with policy rate change itself and unscheduled announcements. Finally, the Federal Open Market Committee (FOMC) announcements, changes in the Volatility Index (VIX), and trading by foreign investors play a limited role in explaining stock market liquidity changes. Overall, results indicate that central bank communication plays a significant role in reducing liquidity impairment by enhancing the predictability of policy actions, and therefore, mitigating information asymmetry. 相似文献
39.
Mie Kyung Jae Jeong Soon Ryu Mohamed Abdel‐Ghany 《International Journal of Consumer Studies》2000,24(4):252-256
This study uses a sample of 39 025 urban families from the 1996 Korean Family Income and Expenditures Survey to examine the relationship between family characteristics and expenditure on convenience foods. Results indicate that age and education of the family's head, number of children, presence of children under the age of six, the wife's labour force participation, and area of residence were significant in predicting the level of expenditure on convenience foods. The present study points to and gives a rationale to differences in some of the effects as compared with those found in Western countries. 相似文献
40.
We show that an economy grows or stagnates depending on which of three objects people most esteem as tokens of status. If the main object of status preference is consumption, then a steady state with full employment is reached. If it is physical capital (which is a producible asset), then permanent growth with full employment occurs. However, if it is money (which is not a producible asset), stagnation with persistent unemployment arises. 相似文献