• Advanced Industrial SCIence
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• v.3 no.3
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• pp.8-13
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• 2024

Zero Knowledge Proof (ZKP) is an innovative decentralized technology designed to enhance the privacy and security of virtual currency transactions. By ensuring that only the necessary information is disclosed by the transaction provider, ZKP protects the confidentiality of all parties involved. This ensures that both the identity of the transacting parties and the transaction value remain confidential.ZKP not only provides a robust privacy function by concealing the identities and values involved in blockchain transactions but also facilitates the exchange of money between parties without the need to verify each other's identity. This anonymity feature is crucial in promoting trust and security in financial transactions, making ZKP a pivotal technology in the realm of virtual currencies. In the context of the Fourth Industrial Revolution, the application of ZKP contributes significantly to the comprehensive and stable development of financial services. It fosters a trustworthy user environment by ensuring that transaction privacy is maintained, thereby encouraging broader adoption of virtual currencies. By integrating ZKP, financial services can achieve a higher level of security and trust, essential for the continued growth and innovation within the sector.

• KDI Journal of Economic Policy
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• v.46 no.1
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• pp.91-129
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• 2024

The Bank of Korea, through a legal amendment in 2011 following the financial crisis, was entrusted with the additional responsibility of financial stability beyond its existing mandate of price stability. Since then, concerns have been raised about the prolonged increase in household debt compared to income conditions, which could constrain consumption and growth and increase the possibility of a crisis in the event of negative economic shocks. The current accumulation of financial imbalances suggests a critical period for the government and central bank to be more vigilant, ensuring it does not impede the stable flow of our financial and economic systems. This study examines the applicability of the Integrated Inflation Targeting (IIT) framework proposed by the Bank for International Settlements (BIS) for macro-financial stability in promoting long-term economic stability. Using VAR models, the study reveals a clear increase in risk appetite following interest rate cuts after the financial crisis, leading to a rise in household debt. Additionally, analyzing the central bank's conduct of monetary policy from 2000 to 2021 through DSGE models indicates that the Bank of Korea has operated with a form of IIT, considering both inflation and growth in its policy decisions, with some responsiveness to the increase in household debt. However, the estimation of a high interest rate smoothing coefficient suggests a cautious approach to interest rate adjustments. Furthermore, estimating the optimal interest rate rule to minimize the central bank's loss function reveals that a policy considering inflation, growth, and being mindful of household credit conditions is superior. It suggests that the policy of actively adjusting the benchmark interest rate in response to changes in economic conditions and being attentive to household credit situations when household debt is increasing rapidly compared to income conditions has been analyzed as a desirable policy approach. Based on these findings, we conclude that the integrated inflation targeting framework proposed by the BIS could be considered as an alternative policy system that supports the stable growth of the economy in the medium to long term.

• KDI Journal of Economic Policy
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• v.33 no.3
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• pp.33-55
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• 2011

Market concentration in the Korean banking industry has markedly increased since the financial crisis of 1997-1998 because of M&As, P&As, and consolidation of banks. With this change, there has been a growing concern over market power in the Korean banking sector. We examine the effects of market concentration on bank efficiency and competition for the period of 1992-2006. Three different indicators of bank inefficiency are used in this study, including X-inefficiency that is derived from the directional technology distance function. The level of competition is measured by both the H-statistic of the Panzar-Rosse model and the level of the net interest margin and its standard deviation. Empirical results indicate that market concentration has not improved bank efficiency through scale economies or scope economies. Instead, recent mergers, acquisitions and consolidation of banks resulted in an increase in inefficiency measured by the three different indicators: X-inefficiency, labor inefficiency and asset inefficiency. While an increase in market share of individual banks improved bank efficiency, an increase in the overall market concentration ratio resulted in lower efficiency. Our study also finds that the Korean banking sector has been monopolistically competitive throughout the sample period except for the crisis period according to the H-statistic. Although an increase in market concentration ratio has not changed the overall level of bank competition, it has a positive significant effect on the level of the average interest margin.

• Journal of Science and Technology Studies
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• v.10 no.2
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• pp.1-35
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• 2010

This study analyzes the necessity of integrated innovation policy for post catch-up innovation. The integrated innovation policy solidifies its position as an infrastructure innovation policy which forms the foundation of all kinds of policies. The Korean government is currently under the pressure of planning technologies and policies that do not allow any easy imitation or copy of other advanced countries, which in turn reveals various limits of the existing policy framework. Integrated innovation policy for post catch-up innovation involves a continual process demanding changes in political, organizational and procedural activities. To ensure long-term and cross-sectoral innovation policy, overall changes and improvements in policy and its implementation are needed in terms of political commitments, governance systems, policy instruments and monitoring, and evaluation systems.

• Korean Business Review
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• v.21 no.2
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• pp.17-41
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• 2008

Although job insecurity has attracted many scholars for long time, the research of job insecurity has not been accumulated because of nonexistence of and comprehensive and systematic model on job insecurity. This study, therefore, has provided integrated model of job insecurity and has also generated important propositions of job insecurity. This study aims to design the antecedents and consequences(outcomes) of job insecurity of employees. First, we have postulated important hypothesis based on the existing literatures. Second, we have tested hypothesis by the comprehensive review of existing local empirical studies. Third we have provided underlying logics of designing integrated model of job insecurity. And we have also generated Important propositions underlying the model focusing on job insecurity. We propose that employees' job insecurity increase with their expectation about further organizational change, role ambiguity. We also propose that employees' job insecurity raise their psychological strain while reducing their organizational commitment, job satisfaction and work effort. Theoretical implications are discussed, as are the implications of study and suggestions for future research.

• The Korean Journal of Applied Statistics
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• v.24 no.1
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• pp.103-114
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• 2011

Current series for testing stock market cointegrations tend to be restricted to analyzing the relations between stock market prices and may not be able to understand the whole picture of the variations in the stock market system. The nature of the variations in the stock prices, between the countries that experienced economic crisis and those did not, are different for a certain period of time, and accordingly excluding the potentially important variables in the stock market system causes statistical bias. This study considers domestic foreign exchange markets and financial markets in testing for the cointegrating relations of the stock prices in Korea and major investing countries. The results demonstrate the possibility of specification errors unless those markets are included in the statistical modeling process.

• Science of Emotion and Sensibility
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• v.11 no.4
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• pp.599-612
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• 2008

Today, communication trend of financial brand has changed fast with more foreign financial brand's introduction, emerging financial brands through the openness. With the trend of changing, companies are introducing various marketing methods to differentiate its brand image. And color marketing becomes an important tool for the differentiation. However, except a few brands, brand color which expresses management character of a company is different from the customer's preferred color which is based on investors' investment tendency. This may be related to the brand Image which is final goal of communication. Therefore, this study suggests effective communication method between company and customers by analyzing preferred color of customers by their investment tendency and comparison analysis security firms' color marketing strategy. As a result, it was found that Roland Barthes symbolic meaning of colors is different from the symbolic meaning of the groups of investor tendency. For example, I assumed that aggressive investors preferred strong color like red or orange, but the survey result was far from my assumption. I hope this study can be a good foundation for logical and scientific marketing in communication between security companies and customers in more open market with introduction to the Capital Market Consolidation Act.

• Monthly Korean Chicken
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• v.4 no.1 s.31
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• pp.2-8
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• 1998

브로일러 생계 생산비 Kg당 1천4백70원 추정 - 중국산 닭고기수입 전면 금지 조치 - 일본, 양계산물 가공소비 증가 - 농림부, 축산정책자금 상환 연장키로 - 동유럽, 양계산업 회복 움직임 - 중국, 평균 관세율 $17{\%}$로 인하 - 생산증가 계속되는 미국 브로일러 산업 - 프랑스 - 생산 증가 불구 세계시장 점유율 감소 - 아시아권의 금융위기로 세계 곡물가 하락세 - 금년도 곡물수급 전망 불투명 - 복사열 육추기가 육추에는 적합 - 절식중 살모넬라의 피해 증가 주의 - 98년 제1차 생산책임자 회의 개최 - 통합경영분과위원회 회의 개최 - 육계계열사 생산비 상승과 닭소비 부진으로 이중고

• Proceedings of the Korean Information Science Society Conference
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• 2002.04a
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• pp.922-924
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• 2002

현재 IC카드는 통신, 금융, 교통 등의 여러 응용 서비스에서 널리 사용되고 있는데, 계속적인 하드웨어 기술의 발전으로 인한 메모리 증가, CPU 성능 향상과, 통합된 정보 가전을 위한 다양한 형태의 네트워크 연결 인터페이스 구축 노력이 다중 응용 프로그램(Multi-Application) 사용 요구 및 개방형 운영체제(Open-platform Operating System)와 맞물려 도약적인 기술 발전을 이루고 있다. 본 고에서는 널리 사용되고 있으며 향후 시장성이 가장 클 것으로 예측되는 자바 카드 플랫폼 탑재 IC카드의 기술 현황을 H/W 및 S/W측면에서 살펴보고, 자바 카드 기술의 발전 동향을 조망하고자 한다.

• Information and Communications Magazine
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• v.21 no.5
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• pp.46-55
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• 2004

최근에 새롭게 관심이 고조되고 있는 텔레매틱스는 통신과 정보기술(Informatics)의 합성어로 무선망을 통한 음성 및 데이터통신과 인공위성을 이용한 위치정보시스템(GPS)을 기반으로 차량에 정보를 주고받음으로써 새로운 부가 서비스를 제공하는 기술을 의미한다. 좀 더 구체적으로 말하면 측위 시스템과 이동통신망을 이용해 운전자와 탑승자에게 위치정보, 교통정보, 최적경로안내, 응급상황에 대한 긴급구난, 원격차량진단, 인터넷 이용(금융거래, 뉴스, e-메일, VOD 등) 등 차량에서의 "Mobile Office" 환경을 제공하는 기술로 설명할 수 있다.(중략)