• Journal of Advanced Navigation Technology
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• v.16 no.1
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• pp.122-130
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• 2012

Airborne separation assurance is a key requirement for Free Flight. This paper is to propose autonomous flight algorithm, such as extended authority of delegation, efficiency of airspace issue to deal with the empirical solution for free flight, and to measure flight efficiency and conflict detection and resolution (CD&R) by utilizing flight performance data under the two circumstances of scenario with the modeling of proposed algorithm and potential field algorithm. The results show that the autonomous flight algorithm is superior to the potential field algorithm under the circumstances of free flight airspace in terms of algorithm performance, CD&R, and flight efficiency.

• Research in Plant Disease
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• v.24 no.1
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• pp.41-51
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• 2018

Since fire blight disease on apple and pear was produced in Korea in 2015, there were no registered chemicals to control against this disease. Instead, several antibacterial chemicals that were registered for other bacterial diseases such as soft rot and bacterial spot have been authorized by Rural Development Administration (RDA). However, these chemicals are not tested efficacy for fire blight disease except damage by those treatments on apple and pear in Korea. Thus, we evaluated efficiency using in vitro and in planta assays of antibacterial chemicals such as antibiotics and copper compounds including kasugamycin, oxytetracycline, oxolinic acid and streptomycin, and copper hydroxide, copper sulfate, oxine copper and tribasic copper sulfate, respectively. We also tested two kinds of biological agents. As expected, significant antibacterial effect was observed in vitro test of both antibiotics and copper-based chemicals. In planta test based on disease severity including ooze and water-soaked formation on immature pears, bacterial populations on blooms, and blight lesion formation in artificially inoculated shoots, kasugamycin, oxytetracycline and streptomycin have been shown the most efficiency among tested antibiotics. Four copper-based chemicals tested in this study, control effects are little bit lower than agricultural antibiotics but they seem to be available to use in terms of winter season. Biocontrol agents were also shown possibility to treat in eco-friendly farms. In addition, there are no antibiotic resistance genes in Korean isolates against antibiotics, which were selected for suppression of fire blight in this study.

• Korean small business review
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• v.42 no.4
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• pp.147-172
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• 2020

This study presents the determinants of R&D efficiency as the focus on CEO's competency, which influences R&D competency and R&D efficiency. The research samples are 6,708 technology-innovation small and medium-sized enterprises (SMEs). The independent variable is the R&D competency(existence of R&D organization, level of R&D personnel, R&D personnel management, R&D investment), the dependent variable is R&D efficiency. The moderator is the CEO's competency(experience level in its own industry, technical knowledge level, technology management strategy, management ability). R&D efficiency measures the relationship between inputs(level of R&D personnel, R&D investment) and outputs(patent applications, prototype) by the DEA. and the determinant analysis uses Tobit regression. As a result of the analysis, the existence of R&D organization and R&D personnel management is positively significant, level of R&D personnel and R&D investment is negatively significant for R&D efficiency. The moderating effect of CEO's competency on the relationship between the R&D competency and R&D efficiency is significant determinants of CEO's experience(experience level in its own industry, technical knowledge level) and technology management strategy. The finding is to measure the efficiency of R&D performance, and to analyze its determinants as the moderating effect of CEO's competency, using the technology appraisal data. In the conclusion session, the limitations of the research and future research directions were discussed.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.38C no.4
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• pp.335-343
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• 2013

If the SW weaknesses, which are the main cause of cyber breaches, are analyzed and removed in the SW development stages, the cyber breaches can be prevented effectively. In case of Domestic, removing SW weaknesses by applying Secure SDLC(SW Development Life Cycle) has become mandatory. In order to analyze and remove the SW weaknesses effectively, reliable SW weakness diagnostic tools are required. Therefore, we propose the functional requirements of diagnostic tool which is suitable for the domestic environment and the evaluation methodology which can assure the reliability of the diagnostic tools. Then, to analyze the effectiveness of the proposed evaluation framework, both demonstration results and process are presented.

• 한국IT서비스학회:학술대회논문집
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• 2006.05a
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• pp.380-387
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• 2006

정보화가 급격히 확산되면서 정보화로 인한 파급효과와 더불어 정보화의 위험과 역기능 방지와 정보시스템의 품질을 제고하기 위한 최적의 방법중 하나로서 정보시스템 감리에 대한 중요성과 그 수요가 증가하고 있다. 더불어 감리내실화와 신뢰성제고를 위한 기술연구와 제도연구도 지속적으로 수행되어왔다. 많은 감리의뢰기관이 감리자체를 시업성공을 위한 품질보증 및 생산성 향상을 도모하기 위해 실시하는 중간평가로 보지 않고 있고, 감리인의 학력.경력.자격수준 및 신기술에 대한 이해도, 숙련도 부족과 감리대상업무파악 미흡으로 현장감각이 부족하여 실제보다 형식에 치우쳐 있다. 따라서, 정보시스템 감리의 서비스품질이 상대적으로 취약하여 감리의뢰기관이나 피감리 기관으로부터 신뢰를 얻지 못하고 있다. 본 연구에서는 마케팅분야의 서비스품질평가모형을 일부 도입하여 감리서비스 품질요인과 감리품질 또는 감리충실도간의 관계를 규명하고, 나아가서 감리충실도에 영향을 끼치는 요소는 외적서비스요인과 내적서비스요인으로 구분하였으며, 이요인들이 감리충실도에 미치는 영향을 규명코자 하였다, 더불어 감리충실도가 감리효과 및 만족도와 프로젝트성과에 미치는 영향을 규명코자 하였다.

• Journal of Digital Contents Society
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• v.16 no.6
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• pp.893-900
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• 2015

IMO has been proceeding in the maritime SQA for software quality is considered to be essential for the development of the introduction of the e-Navigation In order to ensure software quality, follow the prescribed procedures throughout the software development project and create the output as a result of executing the respective steps. This paper is introduced a case for applying to maritime software development using the tool that is capable of real-time monitoring and automated documentation. Also, It is discussed the improvement of procedures for applying the expected effects and maritime SQA for the tool utilization. The Development of customized tools for maritime SQA that is reflected an improved procedure for tool is the future goals.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2015.10a
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• pp.51-52
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• 2015

IMO has been proceeding in the maritime SQA for software quality is considered to be essential for the development of the introduction of the e-Navigation. In order to ensure software quality, follow the prescribed procedures throughout the software development project and create the output as a result of executing the respective steps. This paper is introduced a case for applying to maritime software development using the tool that is capable of real-time monitoring and automated documentation. Also, it is discussed the improvement of procedures for applying the expected effects and maritime SQA for thr tool utilization. The Development of customized tools for maritime SQA that is reflected an improved procedure for tool is the future goals.

• Journal of the Korean Institute of Intelligent Systems
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• v.20 no.1
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• pp.66-75
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• 2010

With the advances in ubiquitous service infrastructure, healthcare services have drawn attention as one of promising application domains. In ubiquitous healthcare services, patients or care-givers as well as medical personnel are asked to play their roles and, in addition, the information system is supposed to have active roles. In medicine, clinical protocols have been developed and put into practice in order to reduce treatment variances and assure the service quality. In the same token, clinical protocols on ubiquitous service practices are need to be developed which takes into account both the clinical details and the ubiquitous service functionality. This paper introduces a clinical protocol modeling methodology which pays attention to participants and their tasks including contextual information. The proposed method has been successfully applied to a real application domain, OAB(overactive bladder) syndrome patient care to see how it builds a clinical protocol.

• Journal of the Korea Institute of Information Security & Cryptology
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• v.27 no.5
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• pp.1033-1047
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• 2017

Traditional explicit authentication, which requires awareness of the user's authentication process, is a burden on the user, which is one of main reasons why users tend not to employ authentication. In this paper, we try to reduce such cost by employing implicit authentication methods, such as biometrics and location based authentication methods. We define the 4-level security assurance model, where each level is mapped to an explicit authentication method. We implement our model as an Android application, where the implicit authentication methods are touch-stroke dynamics-based, face recognition based, and the location based authentication. From user experiment, we could show that the authentication cost is reduced by 14.9% compared to password authentication-only case and by 21.7% compared to the case where 6-digit PIN authentication is solely used.

• Korean Association of Arts Management
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• no.56
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• pp.349-380
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• 2020

The paper is to assess the recent changes in Architectural Artworks system in two regional districts, Seoul and Gyeonggi Province, and to propose policies for further improvement. We focused on four aspects: overall pass rate, top-ranked artists' pass rate, proportion of artists ever passed, genre proportion artworks. It is observed that quality of artworks has improved, market monopolization has been eased, and entry to the market has become more active. However, sculptures accounted for the majority. Public art is gradually changing from 'decorative art' to 'site-specific art', and seeking harmony between architecture and surrounding landscape. To keep pace with this new trend, more institutional efforts should be made: fund raising to induce artwork supplies; introducing life-span concept to secure removal and deformation of artwork; imposing artists' follow-up services; imposing penalties against poor management; and authorizing the committee to choose exhibition sites.