• Journal of Digital Convergence
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• v.17 no.8
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• pp.221-228
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• 2019

The importance of security for virtualization products has been increased with the activation policy of cloud computing and it is necessary to analyze cyber security threats and develop security requirements for virtualization products to provide with more secure cloud environments. This paper is a preliminary study with the purpose of developing security functional requirements through analyzing security features and cyber security threats as well as comparison of foreign countries' cases for virtualization products. To do this, the paper compares evaluation schemes for virtualization products in US and UK foreign countries, and analyzes the cyber security threats, security objectives and security requirements in both countries. Furthermore, it proposes the essential checking items and processes for developing security functional requirements about security features of virtualization products to contribute to its more secure development and the establishment of related security evaluation standards.

• Journal of Food Hygiene and Safety
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• v.37 no.2
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• pp.114-120
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• 2022

In this study, a comparative dissolution experiment was conducted between an immediate-release and a controlled-release vitamin C tablet applied with a technology to control the dissolution of vitamin C to maintain the vitamin C level in the human body. In order to confirm the dissolution rate (%) of vitamin C tablets, HPLC determination was conducted based on the dissolution test methods in the 'Korean Pharmacopoeia (No. 2020-88),' 'Guidelines on Specifications of Dissolution Tests for Oral dosage Forms,' and 'Standard and Specifications for Health Functional Foods (No. 2020-63)' from Ministry of Food and Drug Safety (MFDS). In addition, the dissolution pattern between the immediate-release tablet and the controlled-release tablet was comparatively analyzed. The analysis result confirmed that the immediate-release vitamin C tablet was 100% dissolved after 45 minutes, while the controlled-release vitamin C tablet was 100% dissolved after 480 minutes (8 hours). Furthermore, the dissolution rate (%) at 60 minutes was slower than that of the immediate-release vitamin C tablet. Based on these results, this study confirmed that the dissolution rate (%) test and development of controlled-release tablets containing vitamin C as the main component a re possible.

• Proceedings of the Korean Nuclear Society Conference
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• 1997.05a
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• pp.83-89
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• 1997

본 연구에서는 국내 WH형 원전에서 내출력분포분석을 위해 INCORE 코드를 각 원전의 인접한 전산소의 주전산기에 설치하고, 단말기를 이용한 on-line 작업으로 수행하는 현행 노내출력분포 분석업무를 개선하기 위하여 PC용 INCORE 코드를 개발하였고, 이를 바탕으로 동일 윈도우 통합환경에서 INCORE 코드 운영에 필요한 모든 기능과 노내 출력분포 분석을 위한 발전소 운영절차 수행기능을 통합한 WINCORE(Windows program for INCORE) 시스템을 개발하였다. 현재 WINCORE 시스템은 울진 1호기 8주기부터 노내출력분포 분석업무를 지원하기 위하여 사용중에 있으며, 개발된 WINCORE 시스템을 이용함으로써 현장에서 직접적인 자료처리, 분석계산 및 기술지침서 안전제한치 만족여부 결정을 통하여 노심관리 업무의 효율성을 제고함을 확인하였다.

• Proceedings of the Korea Water Resources Association Conference
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• 2011.05a
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• pp.304-304
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• 2011

최근 도시화에 따른 인구증가와 더불어 도로포장 등 불투수면적의 증가로 인하여 우기시 빗물 침투가 차단되어 도심의 지하수위가 저하되며 토양의 건토화, 열섬현상 등의 문제가 발생하게 되었다. 이러한 문제점에 착안하여 본 연구에서는 투수효과를 최대한 고려할 수 있는 고강도의 친환경 콘크리트 블록(에크스톤 바이오 블록; ECOSTONE-BIO BLOCK)을 개발하였으며 기존 콘크리트 블록의 자연적 빗물침투 억제의 문제점을 일부 개선하였다. 본 블록은 캡슐공법을 사용하여, 공극률은 높이면서(투수성 향상), 강도와 내구성이 유지됨은 물론 캡슐안에 황토성분을 첨가하여, 바이오적인 기능 및 재생골재를 이용한 친환경적 제품으로 투수성, 내구성, 기능성을 극대화 시켰다. 또한 제품표면은 천연 백색돌맹이, 흑색돌맹이의 배합으로 자연석재 느낌을 구현하였으며, 쇼트블라스트 및 커링 표면공정으로 미끄럼저항지수를 조절할 수 있어, 기존 콘크리트 보도블록에 비해 투수율, 내구성, 기능성, 안전성이 우수하여, 안전한 보행환경이 가능한 것으로 분석되었다. 마지막으로, 주변 환경과 잘 어울리도록 디자인된 바이오기능성 친환경 블록으로 도심지역 시공시 투수효과에 따른 지하수고갈방지 및 침수피해에 도움을 주리라 사료된다.

• Journal of Advanced Navigation Technology
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• v.22 no.4
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• pp.288-294
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• 2018

The entertainment system of the aircraft has changed its paradigm in the form of using passenger electronic devices instead of using a fixed monitor. This has simplified the on-board equipment while the risk of safety has increased with the electric charging of portable electronic devices. Unlike personal portable electronic devices that do not have a transmission function, the use of Wi-Fi enabled electronic devices(T-PED) is allowed and the battery is required to be charged in the cabin. In this study, we used the NASA Aviation Safety Reporting System to investigate the effects of changes in wireless environment and entertainment service. Based on this, we analyzed the risks of personal electronic devices by sharing event occurrence cases caused by in-flight electronic equipment or passenger portable electronic devices(especially smart phones) from the viewpoint of aircraft safety management. This analysis includes identification of potential hazards and risk assessment, and finally the strategies for risk mitigation for safe use of portable electronic devices are suggested.

• Journal of the Society of Disaster Information
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• v.15 no.4
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• pp.540-547
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• 2019

Purpose: This paper is for the improvement of the fire gate performance that occurs between the construction company and the residents. A survey was conducted on experts in the construction to prepare the causes and measures for the suit. Method: The application of the Analytic Hierarchy Process(AHP) resulted in the following conclusions. Results: TIn the 2nd tier, 28percent of the "strengthening standards for installation of fire prevention zones" included in the "institutional strengthening of stnadards" of the 1st tier had higher importance. In the 3rd tier, "strengthening the installation standards by floor area" and "strengthening the standard of fire-resistant structures" showed high importance. Conclusion: The results suggest that detailed legal criteria for detailed installation criteria with varying site conditions are needed.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2013.06a
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• pp.398-400
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• 2013

해상교통관제(VTS; Vessel Traffic Service)는 IMO RESOLUTION A.857(20) on Guidelines for Vessel Traffic Service와 해사안전법 제36조, 개항질서법 제 28조에 의거 해상운송에서의 위험을 감소하고 해상교통질서확립과 안전확보를 위하여 전세계 주요항만 및 수역에서 이용되고 있다. 최근 해상교통관제 분야에 인적요인을 도입하여 사고예방 및 감소를 도모하고 있으나 해상교통관제의 특수한 상황을 충분히 고려하지 못하고 있다. 따라서 본 연구에서는 해상교통관제와 해상교통관제사의 특수한 업무상황을 고려하여 직무를 분석하고 인간공학적 분석기법을 적용하여 사전해상상황인식을 위한 관제업무의 예측모듈을 개발하는데 목적이 있다. 본 연구를 통하여 체계적인 관제업무 분석의 프레임을 제공하고 관제사들이 효율적으로 관제업무를 수행하도록 하기 위한 실무적 업무프로세스를 제시한다.

• Journal of Convergence for Information Technology
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• v.11 no.1
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• pp.216-224
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• 2021

This study analyzes the differences in perception of cosmetic quality (safety, stability, functionality, usability) and satisfaction according to consumer characteristics, targeting 317 men and women from their 18 to 50s who use cosmetics in Seoul and Gyeonggi Province, and the differences in effect of cosmetic quality perception on satisfaction according to side effects experience was analyzed. Among the cosmetic quality factors, the usability was satisfied, but the perception of safety, stability, and functionality was low, so overall quality improvement was necessary. In particular, the quality perception and satisfaction by men and 40s was low, so a customized solution was needed for this. In the order of usability and functionality, to both those experiencing or not side effect, had a significant positive effect on the satisfaction level, and the improvement of usability and functional awareness was the main factor that increased satisfaction. Improving product quality and supplementing factors that positively influence consumer perception are thought to be of great help in improving quality perception and satisfaction.

• Journal of Nuclear Fuel Cycle and Waste Technology(JNFCWT)
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• v.15 no.2
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• pp.161-172
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• 2017

To evaluate radiological impact from the operation of a low- and intermediate-level radioactive waste disposal facility, a logical presentation and explanation of expected accidental scenarios is essential to the stakeholders of the disposal facility. The logical assessment platform and procedure, including analysis of the safety function of disposal components, operational hazard analysis, operational risk analysis, and preparedness of remedial measures for operational safety, are improved in this study. In the operational risk analysis, both design measures and management measures are suggested to make it possible to connect among design, operation, and safety assessment within the same assessment platform. For the preparedness of logical assessment procedure, classification logic of an operational accident is suggested based on the probability of occurrence and consequences of assessment results. The improved assessment platform and procedure are applied to an operational accident analysis of the Korean low- and intermediate-level radioactive waste disposal facility and partly presented in this paper.

• Fire Science and Engineering
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• v.22 no.2
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• pp.1-8
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• 2008

With a purpose to set up an efficient national security system for both at war-time and peace-time, President Lee's government transferred the emergency management function from the Office of Prime Minister to Ministry of Public Administration and Security (MOPAS). As a result national emergency management system has been changed into diversified management system ; the function of comprehensive disaster control, emergency preparation to MOPAS, fire, civil defense and disaster management to NEMA and anti-terrorism to NIS, which produce another inefficiency. For this reason, this research presents desirable improvement alternatives through scrutinizing current governmental function and structure.