• Journal of the Korea Institute of Information Security & Cryptology
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• v.11 no.4
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• pp.67-75
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• 2001

3GPP proposed f8 and f9 algorithms based on the block cipher KASUMI to provide the data confidentiality and integrity over a radio access link for IMT-2000(W-CDMA). Also 3GPP proposed Milenage algorithm based on the block cipher Rijndael to provide an example set for 3GPP authentication and key generation functions. In order to analyze the security of 3GPP algorithms, we must go ahead an analysis of security of KASUMI and Rijndael. Since S-box is an important point of security of block cipher, in this paper we analyze the S-boxes of KASUMI and Rijndael and compare the S-boxes of KASUMI with the S-box of Rijndael. Although KASUMI S9-box is bad for AC and SAC, we find that AC of KASUMI FI function containing S7-box and S9-box is equal to AC of Rijndael S-box and SAC of KASUMI FI function is better than SAC of Rijndael S-box.

• Proceedings of the Korea Society for Industrial Systems Conference
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• 1999.12a
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• pp.463-474
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• 1999

본 시스템은 1997년부터 추진된 지역정보화 사업의 추진 과제인 $\boxDr$과학기술정보시스템$\boxUl$ 과 $\boxDr$중소기업지원 정보시스템$\boxUl$ 을 확대 발전시키고 시스템 운영의 효율화를 도모하고자 DB를 통합하여 확대 재 구축함으로써 서비스 수준을 한 단계 높이고 고객 중심의 정보 이용 활성화 차원에서 추진되었다. 기 구축되었던 $\boxDr$과학기술정보시스템$\boxUl$ 과 $\boxDr$중소기업지원정보시스템$\boxUl$ 은 정보화를 통한 지역경제 발전에 일익을 담당하고자 관. 산. 학. 연이 참여한 지역정보화 사업이다. 이번에 확대 개발된 $\boxDr$과학산업종합정보시스템$\boxUl$ 은 연구개발정보센터로부터 자금 지원을 받아 구축한 시스템으로 크게 과학기술정보, 무역지원정보, 기업정보, 기업지원정보, 인력정보, 도서관정보, 시민광장 등을 중심으로 구성하였다. 특히 지역 기업체의 해외 마케팅 강화를 위한 무역지원정보는 상품전시관, 무역/거래알선, 무역통상정보 등 지역기업활동 지원 및 수출진흥을 도모하고 지역경제 활성화에 기여토록 하고자 한다.

• Journal of Korean Library and Information Science Society
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• v.32 no.3
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• pp.199-226
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• 2001

This study is a part of the serial study on the historical development of cataloging rules in Korea, and focus on 'the period of international standardization'(from 1954 to 1980). In this period, Han-Un Catalog Rules, Dongseo pyeonmoggyujeong(cho), Korean Cataloging Rules 1st ed. and 2nd ed. were published in Korea. This study tries to review the structure and contents of these cataloging rules.

• Proceedings of the Korean Society for Information Management Conference
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• 2003.08a
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• pp.367-375
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• 2003

본 논문은 중국 송대의 서산 진덕수가 선대 유가서에서 심학에 관계되는 여러 성현의 격언을 순차적으로 모아 찬한 성리서인 $\boxDr$심경$\boxUl$에 대한 서지적 연구이다. 16세기 이후 조선의 주요 성리서의 하나로 간행 보급되었던 $\boxDr$심경$\boxUl$에 대해, $\boxDr$심경$\boxUl$ 찬자와 간행 및 $\boxDr$심경부주$\boxUl$의 간행 경유와 $\boxDr$심경$\boxUl$의 국내유인 과정을 살펴보고, 책판목록 상의 판본과 현존 판본을 조사하여, 책판목록 상의 판본을 지역적으로 나누어 살펴보았으며, 현존 간본 현황을 분석하여 판본 종수를 기술하였다.

• Journal of KSNVE
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• v.6 no.2
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• pp.147-161
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• 1996

The stress and vibration analysis of stiffened box structure is investigated by experiment and FEM analysis. The effects of stiffener number and box section shape on the structure response are presneted. The 1st natural frequency of stiffened folded byx structure with a stiffeners is 300 Hz. It is highter than that of stiffened rectangular box structure with 5 stiffeners, which is 251 Hz. Maximum deflection of folded box structure with thickness of 1 mm is lower than that of rectangular box structure with thickness of 1 or 2 mm. The natural frequencies of box structures are increeased with the number of stiffener, while the deflections are decreased with the number of box structures. When we compare between fundamental frequency (251 Hz) of stiffened (with 5 stiffeners) and one (137.64 Hz) of unstiffened rectangular box structure under clamped-clamped boundary condition, the ratio of frequency increase is 82%. The stiffened structures of 2 mm thickness can reduced to 120% of maximum deflection of 1 mm thickness rectangular box structures.

• Journal of the Korean Society of Food Science and Nutrition
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• v.29 no.1
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• pp.76-79
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• 2000

The effects of packaging conditions on freshness extension of squash (Cucurbita moscata) were investigated during 7-day storage at 2$0^{\circ}C$. Weight loss of squash packed with corrugated paperboard box (control) was 5.5%, and those of LDPE (low density polyethylene, Ф0.02 mm), LDPE (Ф0.04mm) film and EPS (expanded polystyrene) box were 0.9%, 0.8%, and 1.1%, respectively. Firmness of EPS was 11% higher than that of control, chlorophill content of squash packed with EPS box was 18.9% higher, and total ascorbic acid content of squash packed with EPS box was 29.4% higher than that of control. Quality of packed squash was not different between EPS packages and LDPE packages. Decay of control was 1~2 pieces per box, but was not found in the LDPE, EPS box. Preferences in overall appearences of LDPE, EPS box was better than those of control.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• v.9 no.2
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• pp.1103-1106
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• 2005

The purpose of this research is design of Vision Box which can capture an image which inputs through the camera and understand movement of object included in captured image. In design, we tried to satisfy user's requirements. We made Vision Box can analyze movement of object in image captured by camera without additional instruments. In addition, it is possible that communicate with PLC and operate Vision Box by remote control. We could verify the Vision Box capability by using it to automobile engine pattern analysis. We expect the Vision Box will be used various industrial fields.

• Proceedings of the Korea Concrete Institute Conference
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• 1991.10a
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• pp.163-168
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• 1991

최근 도시지역에서의 교량가설시 P.C BOX GR. 교량이 차지하는 비율이 점차 증가하면서 도심교통난 유발을 최소화 할 수 있는 가설공법에 대한 필요성이 증대되고 있는 상황에서 Precast Element를 이용하여 P.C BOX GR.의 Cantilever 길이를 길게하여 MAIN BOX GR.의 폭을 감소시켜 광폭(B=20M이상)의 상부구조물 일지라도 하부구조를 일주식 교각으로 설치가능할 뿐만 아니라 MAIN BOX GR. 가설시 어떤 가설공법도 적용가능하므로 현장여건에 가장 적합한 가설공법을 용이하게 P.C BOX GR. 공법을 소개하고자 한다.

• Sijohaknonchong
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• v.19 no.1
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• pp.235-260
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• 2003

Recently, I presented Gagok(歌曲) Collection Yeong-eon永言 to learned circles. Yeong-eon is very similar to Yukdang-version六堂本 CheongGuYeongeon靑丘永言. Compared with Cheong- Yuk, it is the same age or little bit early time of Cheong-Yuk in culture Icon. This paper paid attention to the considerable difference between Yeong-eon and Cheong-Yuk in the way of the distribution of Yisakdaeyap二數大 葉's Woo mode羽調 and Ke-myeon mode界面調. There was the way of gathering ‘real name’+‘namelessness’ in Yisakdaeyap, which is the feature of the 18th century Gagok Collection. I found this way just put on the 19th century Gagok Collection way which is the distribution of Yisakdaeyap's 'Woo mode and Ke-myeon mode' in CheongYuk. Then I proved in this paper that the way of gathering Yisakdaeyap in Cheong Yuk didn't correspond to an actual singing in the early 19th century when 'Woo mode and Ke-myeon mode' was fixed. In case of Yeong-eon, however, it was not written any writers' names at all, when it was researched retroactively, I knew it was distributed evenly both the works of 'real name' and 'namelessness' in Yisakdaeyaps 'Woo mode and Ke-myeon mode'. Consequently, I found Yeong-eon is the good Gagok Collection for an actual singing at that time. In addition, there was discord in the mode or key distribution among many Gagok Collections. I found this issue of the application had kept on make Gagok Collections edit during 2 centuries. Because the actual Gagok enjoyment in the specific time is connected the way of the mode application directly.

• Corrosion Science and Technology
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• v.10 no.3
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• pp.87-94
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• 2011

The typical corrosion prevention method inside the steel upper box girder in a suspension bridge involves the use of paints. However, in an effort to reduce environmental impact and cost, the suspension portion of the Yeongjong Bridge, Korea utilizes dehumidification systems to control humidity and prevent corrosion inside its box girder. Maintaining a uniform humidity distribution at the proper level inside the box girder is critical to the successful corrosion control. In this study, the humidity and the resultant atmospheric corrosivity inside the box girder of the Yeongjong Bridge was monitored. The corrosion rate of the steel inside the box girder was obtained using thin-film electrical resistance (TFER) corrosion sensors. Time-of-wetness (TOW) measurements and the deposition rates of atmospheric pollutants such as $Cl^{-}$ and $SO_{x}$ were also obtained. Classification of the atmospheric corrosivity inside the box girder was evaluated according to ISO 9223. As a result, no corrosion was found in the upper box girder, indicating that the dehumidification system used in the Yeongjong Bridge is an effective corrosion control method.