• 한국산학기술학회논문지
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• 제20권3호
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• pp.291-297
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• 2019

세계 주요 선진국들은 4차 산업혁명의 흐름에 따라 국가연구개발 투자의 지속적인 확대와 성과 창출을 통해 국가과학기술 역량을 향상시키고 있다. 기술 융 복합화에 따른 급속한 기술발달로 인해 새로운 패러다임에 대한 선제적 대응이 필요하게 되면서, 국가 경쟁력에 영향을 미치는 첨단 과학기술의 확보의 중요성은 나날이 커지고 있다. 기존 주력산업의 고도화 및 신 산업의 성장 동력화 추진과 국가 경쟁력을 좌우할 핵심기술과 미래 신기술은 국가 혁신역량 고도화를 위한 하나의 척도라 할 수 있다. 특히, 안보환경 변화와 향후 미래전장에 대비하기 위한 핵심기술과 미래 신기술은 무기체계를 개발하는 국방 분야에서 매우 중요하다. 국방 분야에서는 군 소요 무기체계에 근거한 핵심기술들을 식별 도출해내고 있으며, 소요에 기반하지 않고 민간의 우수기술을 국방에 활용하는 창의 도전적인 미래 신기술 발굴에 힘을 쏟고 있다. 본 연구에서는 국방 지상무인체계의 핵심기술과 미래 신기술에 대한 특성을 알아보고 실증적인 분석을 통해 비교연구를 진행하여, 핵심기술과 미래 신기술 특성에 따른 전략적 기술기획과 연구개발이 필요하다는 결론을 도출하였다.

• Journal of Crop Science and Biotechnology
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• 제10권2호
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• pp.112-116
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• 2007

Kinetin(KN) is an inducer of rice(Oryza sativa L.) defense/stress responses, as evidenced by the induction of inducible secondary metabolite and defense/stress protein markers in leaf. We show a novel light-dependent effect of KN-triggered defense stress responses in rice leaf. Leaf segments treated with KN(100 ${\mu}M$) show hypersensitive-like necrotic lesion formation only under continuous light illumination. Potent accumulation of two phytoalexins, sakuranetin and momilactone A(MoA) by KN that peaks at 48 h after treatment under continuous light is completely suppressed by incubation under continuous dark. Using two-dimensional gel electrophoresis we identified KN-induced changes in ribulose-1, 5-bisphosphate carboxylase/oxygenase, energy- and pathogenesis-related proteins(OsPR class 5 and 10 members) by N-terminal amino acid sequencing and mass spectrometry. These changes were light-inducible and could not be observed in the dark(and control). Present results provide a new dimension(light modulation/regulation) to our finding that KN has a potential role in the rice plant self-defense mechanism.

• 한국군사과학기술학회지
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• 제27권3호
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• pp.395-405
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• 2024

This study provides a thorough examination of Unmanned Ground Vehicles(UGVs), focusing on crucial technologies and trends across major global markets. It includes an in-depth patent analysis revealing the dominant positions of the United States and the European Union in this field. Additionally, it underscores substantial advancements made by China, Japan, and Korea since 2010. Using Latent Dirichlet Allocation(LDA)-based patent text mining, the study identified key technology areas in UGV development, such as advanced control systems, navigation technologies, power supply mechanisms, and sensing and communication tools. Through linear regression analysis, the study predicted the future paths of these technology areas, offering important insights into the evolving world of UGV technology. The findings can provide strategic guidance for stakeholders in the defense, commercial, and academic sectors, pointing out the future directions in UGV advancements.

• 산업경영시스템학회지
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• 제32권3호
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• pp.59-70
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• 2009

This study is the result of meta evaluation for the self evaluation of defense R&D programs in Korea by using meta evaluating indicators. The overall meta evaluation result of defense R&D programs gained 74.3 points out of 100, so it was evaluated as 'Good'. But it demonstrated that further improvement for overall system of defense R&D programs evaluation is required. And especially, it demonstrated that more alternatives are necessary in order to improve the utilizations and the feedbacks of evaluation results. The evaluation context component gained 80.2 points out of 100, so it was evaluated as 'Very Good'. The evaluation input component gained 73.1 points out of 100, so it was evaluated as 'Good'. The evaluation process component gained 74.8 points out of 100, so it was evaluated as 'Good'. And the evaluation outcome component gained 69.0 points out of 100, so it was evaluated as 'Good'. Basic model of meta evaluation was derived from the literature review and brain storming. And this meta evaluation model was determined by adopting the result of experts who performed evaluations for defense R&D programs in recent years. The reliability of components and items was verified by Cronbach's a coefficient. It was over 0.6 in evaluation components and items. And the reliability of evaluation context was 0.877, that of evaluation input was 0.755, that of evaluation process was 0.755, that of evaluation output was 0.755 respectively. From the analysis, it is attempted to identify possible problems and to find out the ways of improvements related to the self evaluation system of defense R&D programs. The ultimate objective of this study is to manage the programs effectively and improve the reliability and the objectiveness of the defense R&D programs.

• 대한용접접합학회:학술대회논문집
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• 대한용접접합학회 2006년 추계학술발표대회 개요집
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• pp.109-111
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• 2006

In this study, microstructure and mechanical properties for the friction stir welded 2519Al-T87 alloy of the thickness of 38.8mm were studied using DSC, OM, SEM and micro hardness tester. DSC analysis show that GP Zone, ${\theta}'$ and $\theta$ phases in upper part and ${\theta}'$ and $\theta$ phase in lower part of the FSW zone. Recrystallized large grains are observed in HAZ, and elongated small and large grain in the TMAZ. In SZ, very small grains forms by high plastic deformation and heat from friction by tool and specimen.

• Journal of Microbiology
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• 제45권3호
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• pp.234-240
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• 2007

The DcuS-R two-component system of Escherichia coli senses $C_{4}-dicarboxylates$ of the medium and regulates expression of the genes related to utilization of them. It is known that phospho-DcuR induces expression of genes such as the dcuB-fumB operon, the frdABCD operon, and the dctA gene. We analyzed promoters of the dcuS-R operon to elucidate the transcriptional regulation system. We found a novel internal promoter within the dcuS gene that is regulated by the transcriptional regulator, CRP-cAMP, in both aerobic and anaerobic conditions.

• 한국시스템다이내믹스연구
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• 제8권2호
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• pp.83-114
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• 2007

The Korean defense industry was brought up in the government policy since 1970's. The important parts of defense industrial technologies have not been developed, and usually introduced from overseas. Moreover, the development of advanced technologies was not actively stimulated or pursued, consequently shaping the current structure of the defense industry which lacks global competitiveness due to the dearth of high technologies necessary for high-technology weapons. This research analyzes the systems of the Korean defense industry through a systems thinking approach in order to understand the whole mechanism and to find ways to improve the defense industry. Finding some leverages is the main purpose of systems thinking, that yields desirable results with a little effort. The three policy leverages are: (1) the policy for timely fielding; (2) the R&D investment for development and production of domestic high-technology weapons; and (3) the policy measures for exports. The research findings will contribute to the invigorating and developing the Korean defense industry by providing policy-makers and acquisition practitioners with systematic understanding and insight into the dynamics of the defense industry for them to make and execute efficient policies taking into account the Korean overall defense industry.

• 한국산학기술학회논문지
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• 제22권3호
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• pp.651-660
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• 2021

본 연구는 국방 분야 선진국인 미국의 표준에 대한 제정 동향을 파악하고, 한국 국방 표준에 적용 가능한 방안을 검토하였다. 이를 위해 웹에 등록된 MIL-STD를 비롯하여 다양한 미국 국방 문서에 대해 제목을 중심 데이터를 수집한 후, 텍스트 마이닝을 이용하여 단어 빈도를 분석하고 그 결과를 워드클라우드 형태로 생성하였다. 그 결과, 시대별로 MIL-STD에 등장하는 단어의 동향을 파악할 수 있었다. 문서 자체의 형식으로 인해 많이 등장하는 단어, 전 시대에 걸쳐 많이 등장하는 단어도 있는 반면, 과거에는 자주 쓰이다 현재는 많이 쓰이지 않는 단어나 과거에는 주목을 받지 못하다가 현재에 와서야 많이 등장하는 단어도 파악이 가능하였다. 또한 MIL-STD를 포함한 다양한 국방 문서를 대상으로 생성한 워드클라우드를 통해 그 특징을 도출하였다. 결론적으로 한국 국방 표준도 재료의 안전한 사용 및 다양한 화물 운반 기준을 마련하는 것에 대한 고민이 필요한 것을 확인하였다. 더 나아가 국방 분야 표준 및 규격에 4차 산업혁명 등과 관련된 최신 기술을 반영하여 표준을 선점하고 규격을 마련하는 것이 중요할 것이다. 또한 국방표준 문서체계를 명확하게 정립하고 효율적인 관리에 투자한다면, 국방 분야 표준의 질 향상을 기대할 수 있을 것이다.

• 한국산학기술학회논문지
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• 제21권7호
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• pp.517-524
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• 2020

최근 4차 산업혁명의 거대 물결에 맞춰 국방 연구개발의 환경은 첨단 군사기술 중심으로 변모하고 있으며, 특히 선진국은 첨단 국방과학기술의 보호를 위해 기술수출 및 기술이전에 대한 통제를 강화하고 있다. 이러한 이유로 미래 전장환경에 맞는 첨단무기 및 핵심기술의 독자개발 능력 확보를 위한 예산 요구가 증가하고 있으며, 한정된 예산의 효율적 배분을 위해 연구개발 투자에 대한 효율성 제고가 중요하게 부각되고 있다. 본 연구에서는 비모수적 접근법인 자료포락분석(Data Envelopment Analysis, DEA)을 활용하여 국방 기초연구개발 사업에 대한 효율성을 분석하고자 한다. 투입변수로 연구비, 연구인력, 연구기간을 선정하였고, 산출 변수로는 논문, 특허 건수를 사용하였다. CCR(Charnes, Cooper and Rhodes), BCC(Banker, Charnes and Cooper) 모형 및 규모 효율성(Scale Efficiency, SE)을 통해 기초연구개발 사업에 대한 효율성을 분석하였다. 마지막으로 효율성 측정결과를 바탕으로 비효율적인 연구개발 사업은 비효율성의 원인을 제시하고 효율성 개선방안을 제시하였다. 본 연구 국방 기초연구개발 사업에 대한 효율성 분석을 통해 과제 성과관리에 활용하고 환류를 통해 과제기획 단계에 반영할 수 있는 유용한 정보로 활용될 수 있을 것으로 기대된다.

• 품질경영학회지
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• 제46권3호
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• pp.465-482
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• 2018

Purpose: This article aims 1) to propose improvement directions of the certification by recognizing the quality management practices based on the analysis of the audit results of the military contractors and 2) to suggest some ideas on quality audit planning preparation to help the government quality assurance representatives. Methods: Based on the nonconformity report of the defense quality management system (DQMS) requirements, frequently occurring requirement components are found and summarized. Three hypothesis testings are executed to check whether the maturity levels of the quality management systems are influenced by the company size, weapon tye, and company type, regarding the nonconformity frequency as dependent variable. Results: Nonconformity occurs most frequently in the order of product realization, measurement analysis and improvement, management responsibility, resource management, and quality management system. Nonconformity reduces when the company size increases, for the guided weapons, and in the defense companies. Conclusion: Since small-sized companies are inferior to larger companies with respect to the DQMS maturity level, more support should be provided to these small-sized companies which produce military supplies.