• 펄프종이기술
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• 제39권1호
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• pp.30-37
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• 2007

The seed paper was used in farm field recently for a sound young plant. The most of seed paper are made of synthetic non-woven sheet. Therefore, it is very difficult to bio-degrade in soil and is very hard to have some special function, for example keeping herbicide and/or insecticide activity because of its lack of chemical acceptability. The purpose of this research is manufacture of seedling paper which have a function of herbicide activity from waste paper. The fiber properties from waste paper were remarkably improved by fine removal with washing and/or flotation process. The paper-making ability for seed paper was enhanced with enzyme treatment of secondary fibers. The paper for seedling must have a good bio-degradation ability in soils. The absorption amount of chemical like as dithiopyr was increased remarkably in enzyme treated base paper. The embossing treatment of base paper was very effective for seed attachment and chemicals retention. And also, the developed seed paper showed a good penetration property of young root through embossed paper.

• 한국항행학회논문지
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• 제15권1호
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• pp.69-75
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• 2011

본 논문에서는 블록암호 SEED-192 키 스케줄 취약점을 분석한다. 본 연구 결과에 의하면, SEED-192는 전체 20 라운드 중 16 라운드에 대해, 연관키 렉탱글/부메랑 공격에 대한 취약키가 존재한다. 이는 SEED-192 키 스케줄에 대한 최초의 분석 결과이다.

• 정보보호학회논문지
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• 제24권1호
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• pp.15-29
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• 2014

스마트기기를 기반으로 한 사회적, 경제적 활동이 증가함에 따라 다양한 플랫폼에서의 사용자 프라이버시에 대한 안전성과 신뢰성 등의 문제가 대두되고 있다. 이에 따라 정보보호를 목적으로 한 국내 표준 암호 알고리즘들이 개발되었고 이를 다양한 환경에서 얼마나 효율적으로 구현하느냐 또한 중요한 이슈가 되었다. 또한 국내 암호 모듈의 사용이 권장됨에 따라 다양한 환경에서의 SEED와 ARIA의 설계와 구현방식이 논의되고 연구가 되고 있다. SEED와 ARIA는 국내 암호 표준으로써 128비트의 평문을 암호화하며 각각 Feistal, SPN 구조로 이루어져 있는 블록 암호 알고리즘이다. 본 논문은 국내 알고리즘인 SEED와 ARIA를 GEZEL 언어를 이용하여 구현한 첫 논문으로서 GEZEL을 이용한 설계방법과 특징을 구체적으로 설명하고, GEZEL을 이용한 개발의 효율성 및 유연성을 보였다. GEZEL로 구현한 SEED는 69043slice의 면적과 146.25Mhz의 최대 동작 주파수로 동작했고, ARIA는 7282 slice의 면적과 286.172Mhz의 최대 동작 주파수로 동작했다. 또한, SEED는 시그널플로우 방식으로 설계 시 296%가량 속도가 향상되었다.

• 한국정보통신학회논문지
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• 제12권1호
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• pp.215-222
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• 2008

본 논문에서는 기존 RFID 보안 기법에서 나타나는 도청으로 인한 정보 유출 문제를 분석하고 이를 해결하기 위하여 RFID에 SEED 보안 알고리즘을 응용한 부분 라운드 및 부분 암호화 기법을 적용하고자 한다. 기존에 제시된 많은 태그보안 기법들이 있으나, 보안과 구현의 문제에서 아직 현실적인 접근이 미비한 실정이다. 따라서, 본 논문을 통해 보다 현실적인 구현의 관점에서 하나의 아이디어를 제공하고, SEED기반의 비밀키 기반 암호화 알고리즘 기법을 적용하여 태그에서 리드간의 전송 취약구간인 백워드 채널상의 정보보안을 해결책을 제시하였다.

• Natural Product Sciences
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• 제2권2호
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• pp.137-142
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• 1996

This paper gives a description about the germination inhibition of American ginseng (Panax quinquefolium L.) seed coat. The existence of seed coat is one of the inhibitory factors which inhibit the embryo growth, particularly during the morphological after-ripening stage. The seed coat can obstruct the water absorption at the beginning of seed stratification, but it can not threaten seed germination. The inhibition of seed coat is not caused by the mechanical fetter neither. However, before splitting the seed coat, the inhibition of seed coat comes from both air-tight character and inhibitors, and after splitting the seed coat, the inhibition may come mainly from the inhibitors.

• Architectural research
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• 제20권4호
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• pp.121-128
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• 2018

Given the barriers to implement green building rating systems, Building Information Modeling (BIM) was suggested as an effective solution integrating information into one model and saving substantial time to facilitate certification process. Synergies between BIM and Leadership in Energy and Environment Design (LEED), the most widely used rating system, have been researched for a few decades. This paper demonstrates literature review about the development of integration between BIM and LEED. The research focuses on synergies between BIM and Green Standard for Energy & Environmental Design (G-SEED) in Korea, as one of important strategies to mitigate greenhouse gas emission. The research compares LEED and G-SEED related items based on evaluation contents. The result manifests G-SEED and LEED share many common items in different degrees. Therefore, it is entirely possible for G-SEED and BIM to adapt same developing mode of LEED and BIM. Moreover, the study measures the potential of BIM in application process of G-SEED certification by investigation of credits in LEED and G-SEED can be earned by BIM. The results of paper indicate the documentation support LEED and G-SEED may be prepared directly, semi-directly and indirectly via sustainability analyses software in BIM.

• JSTS:Journal of Semiconductor Technology and Science
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• 제4권4호
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• pp.307-311
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• 2004

This paper presents an efficient architecture that optimizes the design of SEED S-box using composite field arithmetic. SEED is the Korean standard 128-bit block cipher algorithm developed by Korea Information Security Agency. The nonlinear function S-box is the most costly operation in terms. of size and power consumption, taking up more than 30% of the entire SEED circuit. Therefore the S-box design can become a crucial factor when implemented in systems where resources are limited such as smart cards. In this paper, we transform elements in $GF(2^8)$ to composite field $GF(((2^2)^2)^2)$ where more efficient computations can be implemented and transform the computed result back to $GF(2^8)$. This technique reduces the S-box portion to 15% and the entire SEED algorithm can be implemented at 8,700 gates using Samsung smart card CMOS technology.

• 대한전자공학회논문지TE
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• 제39권2호
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• pp.51-59
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• 2002

본 논문에서는 음성 통화에서의 안전한 전송과 수신을 위하여 SEED 알고리즘을 이용한 음성 암호 시스템 설계를 하였다. 음성영역의 신호는 CODEC에 의해 디지털 신호로 변환된다. 그리고 개선된 SEED 알고리즘을 적용한 DSP는 이 신호를 암호화한다. CODEC은 암호화된 신호를 아날로그 음성신호로 변환한다. 이 음성 신호는 중간에 도청이나 감청을 한다고 하더라도 암호화되어있기 때문에 안전하게 전송할 수 있다. 수신자는 수신된 음성신호를 복호화 SEED 알고리즘을 이용하여 송신자의 원음성을 들을 수 있다. 본 논문에서는 16라운드인 SEED 알고리즘의 라운드 수를 32라운드로 설계하여 truncated differential 확률을 $2^{-143.1}$에서 $2^{-286.6}$이상으로 개선하였다.

• 대한건축학회논문집:구조계
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• 제35권10호
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• pp.225-234
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• 2019

The purpose of this paper is to analyze the additional construction cost of G-SEED certification for domestic office building reflecting the latest standard(G-SEED 2016-2), and to derive cost impact by category and level. Therefore, it is intended to provide quantitave cost data according to G-SEED certification at the planning phase of the project, estimate the additional construction cost per level according to G-SEED Certification of similar project to be carried out in the future, and encourage G-SEED certification by supporting the decision of the owners. Method: The Process and method of this study are summarized in five steps, 1) Review of previous research, 2) Selection of target project, 3) Scenario setting by level, 4) Additional construction cost for each evaluation category, 5) Extraction of additional construction cost ratio by level. Result: This paper analyzed the cost impact by deriving the additional construction cost of detailed category for level improvement according to the revised G-SEED certification(G-SEED 2016-2). In conclusion, an additional construction cost(ratio) of G-SEED projects to the reference building is drawn as good level; 157,426,241 KWN(+0.43%), very good level; 321,907,802 KWN(+0.88%), excellent level; 999,371,478 KWN(+2.74%), and outstanding level; 1,467,047,718 KWN(+4.02%).

• The Plant Pathology Journal
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• 제22권1호
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• pp.11-15
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• 2006

Five seed samples of carrot were tested to detect Alternaria spp. by blotter method. A. alternata and A. radicina were detected from all the seed samples as high as $25.8-70.5\%$ and $37.5-63.5\%$, respectively. A. dauci was detected from four seed samples as low as $0.5-7.5\%$. The three Alternaria spp. were detected from the pericarp and the seed coat and endosperm of the carrot seeds but not from the embryo by component plating test. A. alternata and A. radicina were much more detected from the pericarp than the seed coat and endosperm. A. dauci was detected from the pericarp and the seed coat and endosperm at similar rate. The seed sample which was most severely infected with A. radicina showed the lowest rate of germination in the test on top of paper (TP). In the TP test, differences in total infection rate of A. radicina and A. dauci of the seed samples were very closely correlated with those in incidence of seedling rot on the seed samples. However, there was no correlation between infection rate of A. alternata and rate of germination or seedling rot of the seed samples. Soil test for seedling growth revealed that there was no correlation between differences in total infection rate of A. radicina and A. dauci and those in rate of normal seedlings of the seed samples.