• 한국패션뷰티학회지
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• 제6권1호
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• pp.39-47
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• 2008

Korean embroidery is the long historical industrial arts of real life and has handed down Korean sentiment up to now. Korean traditional embroidered pattern is designed to wish someone's health and luck, who uses the embroidery on the clothes and the goods in real life. Especially, the ten longevity symbols' design is represented as 10 which means perfection in oriental philosophy, the sun, mountain, cloud, water, crane, rock, turtle, pine tree, the elixir of life and deer; these 10 symbols show how ancient Korean believe and wish perpetual youth. However, fiber material used embroidery relic has difficulty in preserving for long period compared to other relic descended from historical events for long time and their preserved state isn't so good owing to have been used directly in the real life. Therefore, it is essentially embossed to preserve the embroidery relic and pattern, and make DB for the data. With preservation of the pictures about the handicraft, it's necessary to preserve embroidery technique and make DB through digital imagination. Through the process, we can apply Korean embroidery image to cul-duct package and digital image related field, and it will be helpful to make the tradition popular. In this study, through the research for the embroidery technique applied pattern on the embroidery relic of ten longevity symbols, we'll establish the cultural identification of Korean embroidery image and then develop a worldwide Korean image.

• 한국전기전자재료학회:학술대회논문집
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• 한국전기전자재료학회 2002년도 추계학술대회 논문집 Vol.15
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• pp.424-427
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• 2002

In this papaer, there is a basic research for the development of the Hybrid digital radiation detector with a new system, make up for existing digital radiation detector of direct/indirect method with a weak point. for enhance the efficiency characteristics of signal response from X-ray detector using the a-Se, We make sample with various kinds of layer, through the ratio of As(0.l%,0.3%,0.5%,1%,1.5%,5%,10%). We measure net charge with a leakage current and photo current for electric charateristics. Ratio of As in a-Se consist of 7 stage, It made of using the thermal deposition system, In the made of samples, we made multi layer using the EFIRON optical adhesives from phosphor layer consist of Oxybromide$(BrO_2)$. As a result of X-ray measurement, the best result is ; leakage current(0.30nA/cm2), net charge(610.13pC/cm2/mR) when the condition is voltage(9V/um), 0.3% ratio of As in multi layer(BrO2 + a-Se)

• 정보관리학회지
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• 제33권3호
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• pp.345-370
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• 2016

최근 국가기록원은 표준영구기록관리시스템 개발 계획을 검토하였다. 서울시 등의 지방기록물관리기관 건립에 따라 경제적이고 효율적인 영구기록관리시스템 구축을 지원하기 위함이다. 또한 국가기록원은 디지털 아카이브 구축과 전문인력 양성을 위해 한국정보화진흥원과 업무협약을 체결하였다. 이러한 움직임은 디지털 아카이브에 대한 국내 수요에 기반한 것이다. 이 연구의 목적은 국내의 디지털 아카이브 시스템 구축 수요에 대응하여 지속 가능하며 효율적인 시스템 구축 방안을 제시하는 것이다. 이를 위해 국내외 디지털 아카이브 시스템 현황과 공개 소프트웨어 분석 프로젝트를 조사하였다. 도출된 시사점을 바탕으로 디지털 아카이브 시스템 구축을 위한 기능 모듈 도출 방법과 각 기능모듈에 공개 소프트웨어를 활용하기 위한 방안을 제시하였다. 또한 공개 소프트웨어 기반으로 시스템을 설계할 때 필요한 재정적, 운영적 요건과 모듈 간의 연계 등 기술적 고려사항을 정리하였다.

• 정보관리학회지
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• 제26권3호
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• pp.317-333
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• 2009

디지털 저작물 식별체계는 체계적인 디지털 저작물 관리와 효율적인 저작물 유통시스템에서 중요한 역할을 해왔다. 국내 유일의 저작권 관리를 위해 개발된 식별자인 저작권통합관리번호(Integrated Copyright Number)는 권리자의 보호를 위해 저작물에 대한 저작권 관계 정보를 포함하고 있어 저작권 유통환경에서 다양한 서비스 모델을 제공한다. 한편 디지털 콘텐츠에 집중하여 개발된 UCI(Universal Content Identifier)는 저작권 관리에는 다소 부족한 점이 있으나 ICN과의 연계를 통해 각 식별체계의 장점으로 단점을 보완하여 보다 체계적인 저작권 및 디지털 저작물 관리와 유통체계를 구축할 수 있을 것으로 예상한다. 이에 본 논문에서는 ICN의 효과적인 활용과 효율적인 운영을 위한 UCI와의 연계구조와 서비스 시나리오를 개발하여 디지털 저작권 산업분야에서 디지털 저작물의 구체적인 운영방안을 제안하고자 한다.

• 대한전자공학회:학술대회논문집
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• 대한전자공학회 2004년도 하계종합학술대회 논문집(2)
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• pp.529-532
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• 2004

The ECC(Elliptic Curve Cryptogrphics), one of the representative Public Key encryption algorithms, is used in Digital Signature, Encryption, Decryption and Key exchange etc. The key operation of an Elliptic curve cryptosystem is a scalar multiplication, hence the design of a scalar multiplier is the core of this paper. Although an Integer operation is computed in infinite field, the scalar multiplication is computed in finite field through adding points on Elliptic curve. In this paper, we implemented scalar multiplier in Elliptic curve based on the finite field GF($2^{163}$). And we verified it on the Embedded digital system using Xilinx FPGA connected to an EISC MCU. If my design is made as a chip, the performance of scalar multiplier applied to Samsung $0.35 {\mu}m$ Phantom Cell Library is expected to process at the rate of 8kbps and satisfy to make up an encryption processor for the Embedded digital doorphone.

• 한국전자파학회논문지
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• 제15권11호
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• pp.1034-1042
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• 2004

본 논문에서는 64-QAM 디지털 무선중계 장치에 적용할 목적으로 주파수 선택적 페이딩 책 중의 하나인 아날로그 기울기 등화기의 이론적 모델, 구현 및 성능을 제시하였다. 또한 주파수 선택적 페이딩에 대해 기저대역 의 채널 모델링을 통해 I 및 Q 채 널의 상호간섭을 분석 하였고, 이 를 근거로 IF 대역에서 아날로그 기울기 등화기 구현을 위한 방법을 유도하였다. 페이딩을 받은 채널에 대해 기울기 등화기의 적용 유무에 따라 시간 및 주파수 영역에서 각각 신호의 영향을 살펴보았다. 그리고 무선중계 장치의 성능을 나타내는 시그너쳐(signature)를 통해 비트 오율 $10^{-3}$ 기준으로 신호 대역폭의 가장자리에서 약 6.2 dB 개선됨을 보였다.

• 디지털산업정보학회논문지
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• 제13권4호
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• pp.99-106
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• 2017

With the advent of virtual money such as bit coins, interest in the block chain is increasing. Block Chain is a technology that supports Distributed Ledger and is a versatile technology applicable to various fields. Currently, the block chain is conducting research for various applications such as virtual money, trade finance, marketplace, power market, image contents service, and IoT. The technologies that make up the block chain are smart contract, digital signature/hash function and consensus algorithm. And these technologies operate on P2P networks. In this paper, we have studied e-mail system based on the ethereum which is one of the block chain based technologies. Most legacy mail systems use SMTP and the POP3/IMAP protocol to send and receive e-mail, and e-mail use S/MIME to protect the e-mail. However, S/MIME is vulnerable to DDoS attacks because it is configured centrally. And it also does not provide non-repudiation of mail reception. To overcome these weaknesses, we proposed an e-mail system model based on ethereum. The proposed model is able to cope with DDoS attack and forgery prevention by using block chain based technology, and reliable recording and management among block chain participants are provided, so that it is possible to provide a non-repudiation function of e-mail transmission and reception.

• 한국정보처리학회:학술대회논문집
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• 한국정보처리학회 2005년도 춘계학술발표대회
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• pp.1071-1074
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• 2005

The ECC(Elliptic Curve Cryptogrphics), one of the representative Public Key encryption algorithms, is used in Digital Signature, Encryption, Decryption and Key exchange etc. The key operation of an Elliptic curve cryptosystem is a scalar multiplication, hence the design of a scalar multiplier is the core of this paper. Although an Integer operation is computed in infinite field, the scalar multiplication is computed in finite field through adding points on Elliptic curve. In this paper, we implemented scalar multiplier in Elliptic curve based on the finite field $GF(2^{163})$. And we verified it on the Embedded digital system using Xilinx FPGA connected to an EISC MCU(Agent 2000). If my design is made as a chip, the performance of scalar multiplier applied to Samsung $0.35\;{\mu}m$ Phantom Cell Library is expected to process at the rate of 8kbps and satisfy to make up an encryption processor for the Embedded digital information home system.

• 한국정보통신학회:학술대회논문집
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• 한국해양정보통신학회 2005년도 추계종합학술대회
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• pp.340-343
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• 2005

본 논문은 유로 가입자에 대해서 수신이 가능하도록 제한하는 제한수신시스템을 적용한 디지털멀티미디어방송 수신시스템 구현에 관한 연구이다. 이 시스템은 스마트카드와 소프트웨어 기법의 제한 수신시스템을 사용하여 스크램블 된 전송 스트림을 역스크램블 하기 위한 제어단어를 추출하므로 강화된 안전성을 제공한다. H.264의 비디오 데이터 복호화 처리를 위한 DSP와 RISP가 있는 듀얼 프로세서를 사용하여 QVGA의 비디오와 24Khz${\sim}$48Khz의 오디오 방송을 평균 15f/s로 재현이 가능하다. 가입자 정보를 추가한 방송 스트림을 수신하여 제한수신의 동작 상태와 역스크램블 된 스트림을 디코딩하였을 때 정상 가입자에 대한 경우 역스크램블 과정이 정상적으로 수행되었음을 확인할 수 있었다.

• Archives of Reconstructive Microsurgery
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• 제20권1호
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• pp.38-42
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• 2011

Purpose: To evaluate the effect of intermittent bleeding method in the distal phalanx replantation. Materials and Methods: From January 2007 through June 2009, authors have replanted 117 cases of distal phalangeal amputation in adults at Soo Hospital and Chonbuk National University Hospital. Cases of zone II were 60 cases and zone III 57 according to Allen classification. Male to female ratio was 8.7:1.3. The most common cause was machinery injury in the factory, 98 cases(83.8%), next one was belt injury of the machine, 11 cases(9.4%) and others, 8(6.8%). At least one digital artery and digital nerve were anastomosed under the operating microscope, but vein was impossible to anastomosis as unable to find out in the zone II and III. After anastomosis of one or more digital arteries and nerves, heparine(6,000-10,000 units) was kept to intravenous injection for 24 hours and at the same time fish mouth incision in 2-3 millimeter diameter was made in the distal radial and ulnar margin of the replanted distal phanlanx. From the first 30 minutes to an hour after replantation, incision site was swabbed with heparinized cotton ball for 5 minutes in every 30 to 40 minutes to make sure perfusion for 24 hours, every an hour at the second day, every two hours at the postoperative third to fifth day. Results: 92 cases(78.6%) was completely survived at average postoperative third week follow-up and satisfied with preservation of the finger nail, digit length, good range of motion of the distal interphalangeal joint and acceptable sensibility at average 1.2 years follow-up. Conclusions: Intermittant bleeding method in replantation of crushed distal phalanx impossible to anastomosis of vein at zone II and III of Allen classification was regarded as one of the notable salvage procedure.