• KOREAN JOURNAL OF PACKAGING SCIENCE & TECHNOLOGY
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• v.19 no.3
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• pp.133-138
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• 2013

In this study, we developed cosmetic container's volume index to compare the packaging volumes of fundamental cosmetic types. Over 250 cosmetics used for this study were collected in Korean market. The written content volume and the outer volume of packaging were analyzed to establish volume index (Lcos) and a design guideline for cosmetic container. The allowable ranges, such as maximum, acceptable, and optimum ranges in the design process, were also determined using Lcos. About 37% of cosmetics were in optimum or acceptable ranges. A 15% of cosmetic packages was in maximum range for reducing their volumes. This cosmetic container's volume index may be a useful tool as a design guideline for cosmetic packaging development.

• Journal of Advanced Navigation Technology
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• v.24 no.3
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• pp.205-211
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• 2020

Wiring defect is a major concern for safe aircraft operations. However, troubleshooting process of a wiring defect is very difficult due to extensive and complex wiring system and installed location. Recently, time domain reflectometer (TDR) equipment that enables effective defected wiring troubleshooting has been introduced. Unfortunately, TDRs have not practically adopted by most of airlines' maintenance departments because the effectiveness and usefulness of TDRs have not been verified. This study was conducted to verify if TDRs can identify the location and type of defected aircraft wiring, and whether they can be applied for troubleshooting purposes. Experimental plan was established by using various wires and connections applied to actual aircraft and the observed results were compared with the TDR operation guide. The usability of the TDR in actual aircraft wiring defect detection may be acceptable as the experimental results showed similar results to the TDR operation guide.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.15 no.7
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• pp.1405-1414
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• 2011

This paper analyzes the impact of the change in telecommunication regulation on network investment such as the integration of telecommunication service. The integration of telecommunication service plays a role of separating the behavior regulation from entrance regulation and reducing a entrance constraints. Therefore, it is expected that the market spill over effect is high through the improvement of behavior regulation such as interconnection regulation, facilities provisions, retail price regulation, bundling, number portability of VoIP. This paper discusses the critical factor affecting the decision making process in respect of the firm level and analyzes the impact path guiding investment and innovation. Finally, the paper proposes the guideline for telecommunications policy.

• Proceedings of the Korea Technology Innovation Society Conference
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• 2017.05a
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• pp.115-128
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• 2017

국가연구개발사업은 35개 부처, 약 18.9조 원(미래부 KISTEP, 2016)에 달하며, 이러한 규모의 R&D 활동을 위해 대부분의 국가연구개발사업은 연구관리전문기관에 의한 위탁관리 형태로 추진되고 있다. 위탁관리 형태 중 하나로 볼 수 있는 사업단은 신규 대형 사업의 경우 거의 관행적으로 설립하는 경향이 있어 그 수가 증가 중인 것으로 추정되나, 그나마 드물게 수행되고 있는 국가연구개발사업 관리체계에 대한 조사나 정책 수립은 연구관리전문기관 위주로 이루어지고 있다. 이에 따라 국가연구개발사업에서 주요한 역할을 수행 중인 사업단의 현황과 운영 실태를 파악하고자 사업단의 설립형태와 기능 등 설치현황, 운영비와 인력 등 운영현황, 사업단 운영의 애로사항 등을 조사 분석 하였다. 2014년 기준으로 조사가 가능한 사업단은 모두 63개였으며, 사업단 총 인력규모와 관리하는 사업의 전체 예산 규모는 연구관리혁신협의회 11개 회원 연구관리전문기관 대비 인력규모는 2번째(17.8%), 예산은 5번째(8%) 수준이었다. 사업단의 독립법인 여부, 연구수행 여부 등 형태 기능의 특징은 다양하게 나타났으며, 사업단 기획평가관리비는 평균 5.6억 원으로 사업비 대비 비중의 평균은 6.3% 수준이었다. 사업단 운영의 애로사항으로는 계획된 예산의 적기 지원과 운영비 규정의 혼란 등이 대표적으로 도출되었다. 본고에서는 그간 선행연구와 조사 분석이 거의 이루어지지 않았던 국가연구개발사업 사업단에 대한 기본적인 실태와 현황, 이들이 직면하고 있는 다양한 문제점과 애로사항에 대해 파악하였다. 조사 분석 결과 효과적인 사업단 설립과 운영을 위해서는 적절한 가이드라인과 제도개선이 필요할 것으로 보인다. 다양한 사업단 운영 사례 분석과 연구를 통해 효율적인 사업단 조직체계와 설립형태, 적절한 운영비 제도 등을 제시해 줄 수 있다면 향후 사업단 체제와 대형 국가연구개발사업의 효과적인 추진과 관리에 도움이 될 것이다.

• The Transactions of the Korea Information Processing Society
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• v.4 no.6
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• pp.1589-1600
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• 1997

The construction of optical access network costs upper 40% in total installation cost of total optical network. Optimization of access network therefore is core in optical network. Advanced countries include EU, Japan and USA already have researched access network. This paper presents analysis of three broad-band fiber-optics subscriber loop architectures(HFC, ATM-PON, Super PON). The analyses focus on the specific demonstrated architectures and use component cost projections to estimate future network costs on a per-subscriber basis. We use TITAN(Tool for Introduction Scenarios and Techno-Economic Evaluation of The Access Network) model. We find that ATM-PON can deliver voice and ISDN data at installed first costs than the other architectures. This is due to the sharing bandwidth among a cluster of subscribers within Curb. This work intends to support establishing guidelines for strategic decisions regarding the development of the access network alternatives of different operators.

• Proceedings of the Korean Society of Propulsion Engineers Conference
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• 2006.11a
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• pp.243-246
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• 2006

Most of the guided weapons have been kept and transferred at the launching tube and fired in case of necessity in these day. Launching tube is a kind of case to protect the guided weapons from external environments and conducted as a guide when they are fired. When we attached the guided weapons to launching tube we usually has used explosive bolt. Explosive bolts have been used explosives when they had to be separated. But when they are separated there are some bad effects; a flame, fragments and pyre-shock. Because of these bad effects there are many restriction to use bolt as joining devices to precision guided weapons. To solve these problems we invented ball type bolt. Unlike explosive bolt, ball type bolt is separated without a flame, fragments and pyre-shock. And it also has a good mechanical properties as much as those of explosive bolt.

• Proceedings of the Korean Society of Propulsion Engineers Conference
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• 2008.05a
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• pp.179-182
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• 2008

Most of the guided weapons have been kept and transferred at the launching tube and fired in case of necessity in these day. Launching tube is a kind of case to protect the guided weapons from external environments and conducted as a guide when they are fired. When we attached the guided weapons to launching tube we usually has used explosive bolt. Explosive bolts have been used explosives when they had to be separated. But when they are separated there are some bad effects; a flame, fragments and pyro-shock. Because of these bad effects there are many restriction to use bolt as joining devices to precision guided weapons. To solve these problems we invented ball type bolt. Unlike explosive bolt, ball type bolt is separated without a flame, fragments and pyro-shock. And it also has a good mechanical properties as much as those of explosive bolt.

• Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography
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• v.26 no.4
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• pp.433-442
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• 2008

This research dealt with the methodological procedures of ubiquitous sensor networks, applying to urban ground facilities. Recently Korean government established a guide, "u-City IT Infra guide v1.0" when promoting u-City implement projects. This guide conceptually included general processes about u-City mainframe in overall, but its guidance could not lead the detailed procedures and methods for specific ground facility. Therefore, this research proposed the details of the procedure for the intelligence of facilities after reviewing the existing procedures for ubiquitous city. Newly proposed procedure for the intelligence of facilities was consisted of selection of facility and sensors for intelligence, setting a level for intelligence, and suggestion of service model for the selected facility.

• Journal of the Korean association of regional geographers
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• v.19 no.4
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• pp.683-696
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• 2013

This paper aims to study its preservation and practical application on the basis of analysis on geomorphic landscape and trail of Hwayang-Gugok(華陽九曲). The main results are as follows. 1) There are various and beautiful granitic landforms in Hwayang-Gugok. 2) The scene of Hwayang-Gugok are geomorphic resources worthy of the world cultural heritage in a point of view of relations between geomorphic landscapes and Neo-Confucianism. 3) The best effective application of Hwayang-Gugok may be geotourism. The explanatory plates to describe easily Hwayang-Gugok and training of many skilled guides are also necessary for improving the efficiency of geotourism. 4) Not only landscape restoration but also preservation of geomorphic landscapes in Hwayang-Gugok are required for sustainable geotourism, and improvements based on the results to be analysed in this paper are investigated.

• The Journal of The Korea Institute of Intelligent Transport Systems
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• v.16 no.4
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• pp.13-24
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• 2017

This paper presents a sequentially combined method of determining location conditions, the number of unmanned parcel service box and their optimal locations. First of all, block, accessibility and main public facilities are considered as location conditions and then set-covering model and p-median model are adopted for deciding the number of unmanned parcel service box and optimal locations, respectively. A case study for a region composed of small housings and multiplex housings in Ansan is conducted to prove the validation and application of the proposed method. The result indicates that 2 unmanned parcel service boxes are necessary in specific public places. The research contributes to resonable choice of unmanned parcel service boxes, crime reduction relevant to delivery man impersonation and economic benefit due to parcel service industry growth.