• Journal of the Korea Institute of Information and Communication Engineering
• /
• v.19 no.6
• /
• pp.1277-1282
• /
• 2015

This paper describes a research for improvement official approval of information processing in national technical qualification. In this paper, we analysis the contents of current exams and propose the new evaluation method of practical exam in information processing fields through grafting new trends of ICT and ability unit, fulfillment criteria in national competency standards(NCS). Also, we have verified the effect of exam through the pilot test. In the future, we will apply the new exams after the revision of guidelines for marking questions by expert group in its duty fields basis on this research

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
• /
• 2015.05a
• /
• pp.82-85
• /
• 2015

This paper describes a research for improvement official approval of information processing in national technical qualification. In this paper, we analysis the contents of current exams and propose the new evaluation method of practical exam in information processing fields through grafting new trends of ICT and ability unit, fulfillment criteria in national competency standards(NCS). Also, we have verified the effect of exam through the pilot test. In the future, we will apply the new exams after the revision of guidelines for marking questions by expert group in its duty fields basis on this research.

• Korean Journal of Ecology and Environment
• /
• v.40 no.3
• /
• pp.357-369
• /
• 2007

Water fleas are very important organisms in aquatic ecosystem because they are key constituents of food webs as either glazers or foods for predators. Daphnia magna is a representative test species and it has been extensively used in ecotoxicity evaluation. However, Daphnia magna has not been found yet in Korean water environment. There are limitations of using the foreign species such as Daphnia magna to reflect domestic situations in Korea. Consequently it is mandatory to find domestic species suitable for bioassay, and to develop corresponding toxicity test methods using the domestic species. In this study, we widely collected the domestic and foreign toxicity test methods performed by using domestic water fleas in Korea. The 58 test methods were collected from the standard methods (OECD, US EPA, ASTM), government reports, SCI papers and domestic papers. Ten domestic water fleas selected were Bosmina longirostris, Ceriodaphnia dubia, Ceriodaphnia reticulata, Daphnia obtusa, Daphnia puex, Moina macrocopa, Moina micrura, Simocephalus mixtus, Simocephalus serrulatus, and Simocephalus vetulus. We suggested the domestic ecotoxicity test methods using domestic water fleas in Korea through providing a range of test conditions, and future directions for toxicity test using water flea. This study could be a useful basis for establishing the aquatic toxicity test methods with domestic organisms in Korea.

• Journal of Internet Computing and Services
• /
• v.21 no.2
• /
• pp.131-138
• /
• 2020

The SBA Integrated Information system is constructed and operated for scientific and systematic management of Defense information utilizing whole process of weapon system acquisition from requirement institution to operation maintenance. In order to utilize m&s resources actively and effectively in the life cycle of weapon system acquisition, efficient management plans of the SBA integrated Information system is required. As a result of identifying usage on SBA Information system and performance of operation performance measurement, it was defined that establishment of the SBA Integrated Information system process and provision of detailed system are mandatory for activating m&s resource and supporting process of acquisitions. In this study, Defense m&s information system is analyzed and improvement plans of SBA Integrated Information system is provided for efficient operation of SBA integrated Information system.

• Journal of the Korea Society of Computer and Information
• /
• v.29 no.8
• /
• pp.67-75
• /
• 2024

Frequently changeable functional requirements in System Management CSCI Software make it difficult to reuse an overall application, but only the partial class codes repeatedly as a new version of Naval Combat Management System is developed. This structural environment leads to increasing development time and expenses. This is why modularization for System Management CSCI Software is proposed as a solution, leveraging the advantages of proper standardization and functional expandability offered by Standard Interface Architecture. This paper outlines the comparisons of modified class ratios as well as software reliability test runtime results between before and after implementing the modularization for System Management CSCI Software. The findings demonstrate there is sufficient improvement in areas, such as higher maintenance and reusability, supporting the application of modularization for System Management CSCI Software with the implementation of Standard Interface Architecture.

• The Transactions of the Korea Information Processing Society
• /
• v.6 no.8
• /
• pp.2020-2030
• /
• 1999

Data acquired about 53 gigabyte per a naval vessel is massive, expensive and impossible to be retested in a underwater acoustic measurement. So, it is required to manage systematically. In this paper, we mention MUADS (Massive Underwater Acoustic Database System) that was developed to store a long time, manage systematically and supply raw data and analyzed data. we analyze client/server performance based on 6003 input data individually in our MUADS that Unix server having a massive DC-jukebox and Windows clients.

• Journal of the Korean Society for Aeronautical & Space Sciences
• /
• v.49 no.7
• /
• pp.565-572
• /
• 2021

In this study, a study on the performance and aging of explosive bolts stored for a long time among pyrotechnic mechanical devices(PMD) used as separation devices in the defense field is conducted. For this, explosive bolts that had been installed in the weapon system for about 10 years are secured. Performance and life extension test procedures are established based on the AIAA Standard and MIL-STD. Before performance evaluation, non-functional tests are performed to check whether external changes or failures occurred. Next, circuit inspection and X-ray tests are conducted to check the failure in internal circuits and structures. After that, performance test is carried out to confirm the operation of the samples that passed the non-functional test. Through this test, separation of bolt and separation time are measured, and some samples are tested after a high temperature storage test to confirm the remaining life and the possibility of extension. Finally, the remaining life and reliability are predicted based on the results of the test and the Arrhenius model to identify remaining shelf life and reliability depend on time.

• Journal of the Korean Geotechnical Society
• /
• v.20 no.1
• /
• pp.13-19
• /
• 2004

The major distress types in the domestic asphalt pavement are fatigue cracking, reflection cracking, thermal cracking, and rutting. To decrease the pavement distress by reinforcing asphalt pavement with reinforcement interlayer in geosynthetics to the traditional pavement systems can improve these problems. This study conducted laboratory test with asphalt pavement reinforced by glass fiber sheet to fix systematically geosynthetic asphalt pavement system. Laboratory tests like wheel tracking test and crack resistance test are conducted to analyze the controlling effect of glass fiber sheet on cracking and rutting of asphalt pavement.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
• /
• 2023.11a
• /
• pp.199-201
• /
• 2023

VDES는 2015년 ITU-R M.2092-0가 발행된 이후로 다년간 기술 개발 및 개정 작업을 통해 2022년에 ITU-R M.2092-1이 발행되었다. 2026년 1월부터 VDES를 필수 규제 체계에 도입하기 위해 IMO는 2021년 MCS 103회의를 시작으로 NCSR 10에서 SOLAS 4장 및 5장의 수정안과 성능 기준 및 지침 개발을 논의하였고 24년 6월이면 작업이 완료될 것으로 예상된다. 자율운항선박 과제에서는 VDES를 이용하여 자율운항 선박의 안전관련 필수 정보들을 육상-선박 뿐만 아니라 선박-선박 연결에서도 데이터 교환을 할 수 있도록 VDES 시스템을 통신 방식 중 하나로 적용하여 개발하고 있으며 최신의 VDES 관련 표준을 유지할 수 있도록 지속적인 표준 분석 및 시스템 적용을 수행하고 있다. 본 논문에서는 VDES의 MAC 계층 설계를 위해 IEC에서 개발 중인 시험 표준을 분석하고 VDES 개발 시제에 적용하여 검증 및 평가를 수행하였다.

• Journal of the Korea Academia-Industrial cooperation Society
• /
• v.19 no.11
• /
• pp.96-104
• /
• 2018

Military vessels are complex weapon systems consisting of various integrated onboard equipment. Since their acquisition of military equipment takes a long period of time and a prototype ship is deployed and tested, vessel development has relied on its proprietary process. However, due to the growing complexity of onboard equipment technology, application of systems engineering (SE) process has become indispensable. Nonetheless, an effective design process complementing the existing design with the SE has not yet been developed. As such, we have studied an improved basic design process for submarines based on SE. To do so, we analyzed the processes for the basic design, technical review, and requirement management. Included reviews and requirements are SRR, SFR and PDR, and SSRS, SSS, and SSDD. By combining the results in the SE framework, we built an improved basic design process that can be applied in parallel with the SE-based technical review and requirement management. To assess the process, we applied our proposed model to the submarine development undergoing the basic design phase. It is possible to effectively manage the requirements, design artifacts and improve traceability, and also utilize them as test and evaluation materials. The SE-based basic design process is expected to be useful in other kinds of vessel design.