• 대한방사선방어학회:학술대회논문집
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• 2010.04a
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• pp.234-235
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• 2010

• Journal of Advanced Navigation Technology
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• v.6 no.3
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• pp.211-222
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• 2002

This paper describes the utility of satellite sensors of the missile defense system using the estimation theory. The inherent flight characteristics of the missiles give the limitations in the response time and the countermeasures. In this point, the early warning and surveillance satellites are important. Using the Extended Kalman Filter, it is analysed LPU and MLU in DSP and SBIRS satellites, and presented the quantitative uncertainties of state estimates of non-rotational DSP compare to the rotating one.

• Proceedings of the Korea Water Resources Association Conference
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• 2006.05a
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• pp.226-230
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• 2006

홍수피해잠재능(Potential Flood Damage: PFD)은 면 개념을 도입함으로써 치수단위구역의 치수특성 및 사회경제적인 가치를 함께 평가할 수 있도록 고안된 지수로 이미 여러 유역에서 시행되고 있는 유역종합 치수계획 사업에서 사용되고 있으나, 몇 가지 중요한 문제점이 꾸준히 제기되어 왔다. 본 연구에서는 우선 다음과 같은 이론적 문제점을 검토하였다. PFD는 처음 제안될 당시 (이하 기존 PFD) '잠재성'과 '위험성'라는 두 가지 요소가 곱해지는(multiplicative) 형태로 구성된 후 '위험성' 요소 안에 '가능성'과 '방어능력'이 더해지는 (additive) 형태를 취하고 있었다. 그러나 본 연구에서는 (이하 수정 PFD) '피해대상', '피해가능성', 그리고 '방어취약성'이 모두 곱해져야 이론적으로 타당함을 제시하였다. 기존 PFD는 '방어취약성'이 0의 값, 즉 홍수에 대한 완전방어를 의미하는 값에 가까워져도 PFD 값이 0에 수렴하지 않는 반면, 수정 PFD는 위의 경우 홍수 피해잠재능이 0에 수렴하는 것을 요소별 시나리오 모의를 통해서 확인할 수 있었다. 두 번째로 본 연구에서는 PFD를 이용하여 유역의 목표치수안전도 설정 방안을 제시하였다. PFD의 물리적인 의미가 무차원화 된 피해량 임을 전제로, 피해대상으로부터 목표방어율을 설정한 후 이에 해당하는 목표방어취약성을 계산하는 절차를 전개하였다. 추후 이 방법을 실제 자료에 적용하여 검증하는 연구가 이어져야 할 것이다.

• Journal of the Korea Convergence Society
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• v.13 no.5
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• pp.219-228
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• 2022

In order to improve audit quality, it is essential to understand the occurrence of disagreement between auditors and managers, and this study aims to analyze the impact of Business Strategies on audit risk and accounting audit delay. To this end, we conducted an empirical analysis using sample 2,910 firm-year data from 2018 to 2020 of KOSPI-listed and KOSDAQ-listed companies. The results of the empirical analysis of this study are as follows. First, compared to the companies of defender type, prospectors can expand audit procedures for new products, R&D costs, and intangible assets, and increase audit delays due to disagreement between managers and auditors. Second, compared to KOSPI-listed companies, the prospectors in KOSDAQ are more likely to have lower financial reporting quality, which further increases audit delays. The results of this study analyzed whether a company's Business Strategy affects the possibility of disagreement between an auditor and a company, and verified whether there is a difference in the audit report lag by stock market. The results of this study show that auditors' strong duty of care is needed for the companies of prospector type with high audit risk, and it is meaningful to present reinforced audit systems and specific guidelines for the companies of prospector type through the definition of prospector type. It also enables the expansion of research to identify the relationship between non-financial factors and audit risks that make up the companies of prospector type.

• Proceedings of the Korean Nuclear Society Conference
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• 1998.05a
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• pp.297-302
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• 1998

최근 원자력산업계 동향은 기기의 노후화, 예비품 확보의 어려움, 그리고 기존 설비에 대한 보수비용 증가 등의 이유로 아날로그 계측제어 설비들을 컴퓨터-기반 설비로의 부분적인 개선이나 전체적인 교체가 추진되고 있다 그러나 컴퓨터-기반 설비는 소프트웨어와 하드웨어가 환경영향에 민감하고, 공통모드고장을 일으킬 수 있는 프로그래밍 설계오류의 잠재성이 있는 것으로 알려져 있다. 공통모드고장을 방지할 수 있는 가장 설득력 있는 해결방안은 철저한 품질보증, 심층방어 및 다양성 설계기법으로 평가되고 있다. 본 논문에서는 컴퓨터-기반 계측제어계통의 심층방어 및 다양성에 관한 규제기준과 정성적 평가를 위한 블록개념을 소개하고, 평가의 사례로서 CE System 80+와 국내 가동중인 W형 원전의 설비개선에서 주급수 상실시 컴퓨터-기반 설비의 공통 모드고장에 따른 다양성과 심층방어계층을 평가하였다. 특히 국내 가동중인 W형 원전에 대해서는 그 평가결과를 근거로 하여 ATWS 완화설비의 설치를 제안하였다.

• Journal of Internet of Things and Convergence
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• v.8 no.4
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• pp.85-96
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• 2022

The purpose of this study was to investigate how the management strategies and organizational culture required in the digital economy have an effect on business performance. It provided basic data on management strategies and organizational culture necessary to approach as a digital leading country. For data collection, a survey was conducted from March 1 to May 30, 2022 for companies located in J province and engaged in industries related to the digital economy. The survey was conducted online and non-face-to-face, and a total of 225 companies participated in the survey. For statistical analysis, frequency analysis, exploratory factor analysis and reliability analysis, cluster analysis, independent sample t-test, and multiple regression analysis were performed. The research results are as follows. First, organizational culture was classified into high and low groups according to preference in innovation oriented, relationship oriented, task oriented, and hierarchical oriented. Second, the 4 types of organizational culture showed differences in prospectors strategy, analyzers strategy, defenders strategy, differentiation strategy, cost leadership strategy, financial performance, and non-financial performance according to preference. Third, management strategies affecting financial performance were found to be analyzers strategy, differentiation strategy, prospectors strategy, and cost leadership strategy. Fourth, management strategies affecting non-financial performance were found to be differentiation strategy, defenders strategy, analysis strategy, offensive strategy, cost leadership strategy, and focus strategy. Fifth, organizational culture affecting financial performance was found to be task oriented. Sixth, organizational culture affecting non-financial performance was found to be innovation oriented and relationship oriented. Through these studies, it is expected that the economy will be revitalized in the domestic market and a growth ecosystem that can take a new leap forward is created in the global market.

• Pediatric Infection and Vaccine
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• v.20 no.2
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• pp.53-62
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• 2013

Purpose: The cross-protection of 7-valent pneumococcal conjugate vaccine (PCV7) against vaccine-related serotypes has been controversial. We investigated the serological properties of cross-protective antibodies against vaccine-related serotypes 6A, 6C, and 19A induced in young children aged 12-23 months after booster immunization of PCV7. Methods: IgG and IgM antibody concentrations and opsonic index (OI) against vaccine serotypes 6B and 19F and vaccine-related serotypes 6A, 6C, and 19A were measured by ELISA and opsonophagocytic killing assay (OPA) in 4 selected immunesera. The serological properties and antigenic specificity of protective antibodies were determined by IgM depletion of immunesera, OPA, and competitive OPA against serogroup 6 and 19 pneumococci. Results: Compared to pre-IgM depleted immunesera, OI of IgM-depleted immunesera against 6B and 19F decreased and OI against 6A, 6C, and 19A decreased, too. In competition OPA, free 6B and 19F polysaccharide completely inhibited the immune protection against vaccine-related serotypes 6A, 6C, and 19A as well as vaccine types 6B and 19F. Conclusions: The booster immunization of PCV7 certainly induced cross-protective antibodies against vaccine-related serotypes 6A, 6C, and 19A with both IgG and IgM isotypes. Furthermore, IgM antibodies are more highly contributed to opsonophagocytic activity against vaccine-related serotypes as well as most of vaccine types than do IgG antibodies. Further studies are needed for the more immunized sera in the children as well as adults.

• Korean Architects
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• no.1 s.345
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• pp.48-49
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• 1998

• Convergence Security Journal
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• v.12 no.5
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• pp.33-39
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• 2012

The value of Karatedo as security guard martial art can be categorized like following in connection with this point. The first one is value of defensive measure. It can raise dispassionate of dangerous condition by exact and dispassionate judgment and quick movement and it can raise capability being able to overpower opponent by exact judgment and quick action at incident. Secondly, it is physical value. The third one is psychological value. The forth one is technological value. The fifth value is education. The last one is value as martial art. Karatedo is martial art of noble man starting from proprieties and ending to proprieties. It include ethical aspects including proprietis, technology of 'Ilgekfilsal' being able to kill life and survive life.

• The Journal of the Korea Contents Association
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• v.4 no.1
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• pp.40-48
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• 2004

In a study involving 52 large organizations in the savings institutions industry, the relationship between information systems technology(IT) structure and competitive strategy was investigated based on structural contingency theory. Two dimensions of IT structure and two types of competitive strategy were employed to test a contingency mood. It was found that enhanced congruence between IT structure and competitive strategy was associated with higher competitive advantage. The structural dimension significantly associated with the "defender" strategic stance was more centralized and more integrated application of IT, while the structural dimension significantly associated with "prospector〃 positioning was more decentralized and less integrated application of IT.lication of IT.