• Proceedings of the Korean Information Science Society Conference
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• 2005.11b
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• pp.193-195
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• 2005

본 논문은 온톨로지를 이용하여 뉴스 비디오를 분야별로 자동으로 분류하는 효율적인 기법을 제안한다. 이를 위해서 뉴스 비디오를 파싱하여 키프레임(Key frame), 샷(Shot), 씬(Scene)으로 나누고 키프레임과 샷에서 특징 정보를 추출한다. 추출된 특징 정보를 이용하여 샷의 키워드 집합을 만들고 이를 이용하여 씬의 키워드 집합을 만든다. 그리고 씬의 키워드 집합을 어휘 온톨로지와 뉴스 온톨로지에 매칭(추론)하여, 씬의 분야를 결정한다. 또한 이렇게 결정된 분야를 기반으로 서로 유사한 씬들을 자동으로 그룹화하는 방법을 제안한다.

• Journal of Korean Society of societal Security
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• v.3 no.1
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• pp.61-66
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• 2010

Recently a construction industry introduces information technology that brings about many advantages in the early planning phase, design phase and construction phase. Nevertheless a BIM has a many benefits, it has limits which are not only usually using 3D modeling but also limit of making full use of practical affairs because of a lack of connecting varietals of progress of work. To solve these uppermost limits, this research is presenting unified systems to use in risk management which are efficient management of space and non-space information, space analysis.

• Reproductive and Developmental Biology
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• v.36 no.2
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• pp.109-114
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• 2012

We prepared the polyclonal antibody anti-$20{\alpha}$-hydroxysteroid dehydrogenase (anti-$20{\alpha}$-HSD) against the recombinant full-length protein bovine $20{\alpha}$-HSD in Escherichia coli. The specificity of anti-$20{\alpha}$-HSD was demonstrated using Chinese hamster ovary (CHO) cells transfected with recombinant bovine $20{\alpha}$-HSD and bovine placental tissues. According to western blot analysis, anti-$20{\alpha}$-HSD specifically recognizes the 37-kDa protein bovine $20{\alpha}$-HSD. The protein is not present in untransfected CHO cells. Anti-$20{\alpha}$-HSD also recognizes a specific protein in the ovaries and placenta of other animals. Immunostaining was used to detect expression of bovine $20{\alpha}$-HSD protein in the cultured luteal cells during the estrous cycle later.

• KSII Transactions on Internet and Information Systems (TIIS)
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• v.4 no.2
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• pp.98-116
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• 2010

The field of lightweight cryptography has developed significantly over recent years and many impressive implementation results have been published. However these results are often concerned with a core computation and when it comes to a real implementation there can be significant hidden overheads. In this paper we consider the case of cryptoGPS and we outline a full implementation that has been fabricated in ASIC. Interestingly, the implementation requirements still remain within the typically-cited limits for on-the-tag cryptography.

• Proceedings of the Korean Information Science Society Conference
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• 2001.10c
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• pp.781-783
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• 2001

동영상을 효율적으로 압축하기 위한 움직임벡터 예측에 관한 많은 연구가 진행되어 왔다. 가장 일반적인 FBMA(Full search-based Block Matching Algorithm)는 화질은 좋지만 계산량이 많기 때문에 실시간 인코딩을 요구하는 시스템에서 사용하는데 문제가 있다. 좋은 화질을 유지하면서 인코딩 속도를 해결하기 위한 많은 알고리즘들이 제안되어 왔지만 ASIC이나 소형 시스템에서 사용할 수 있는 방법이 계속 요구되고 있다. 본 논문에서는 계산량을 더욱 줄여 속도향상을 가져오면서 FBMA와 비숫한 SNR을 유지하는 방법인 NMS(New Fast Motion Estimation Search With Subsmapling Method)를 제안하였다. NMS는 서브샘플림한 값을 이용하여 SAD값을 구하고 또한 새로운 Search를 제안하여 기존 방법들이 제공하는 주관적 화질이나 PSNR을 높게 유지하면서도 속도를 10~15% 정도 개선시킬 수 있다.

• Proceedings of the Korea Society for Industrial Systems Conference
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• 2008.10b
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• pp.48-53
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• 2008

The information technology, in the digital economy era, does a very important role not only for the country's administrative management innovation but also for the business and for the everyday life. Specifically, the e-business for the company or organization is defined as "using the Internet and IT, rescheduling of business process management activities to increase productivity and efficiency and to create new business opportunities." Thanks to the Korea's recent efforts, overall level of informatization and digitalization is able to receive high praise. But the e-business readiness (e-readiness) level is still expected a lot of room for improvement. In this paper, I try to analyze the informatization level of Korea's by the EIU's e-business readiness index and IT industry competitiveness index, to prepare a full-scale e-business era of global competitiveness through any preparation that could do to improve the situation from the analysis of statistical data.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.13 no.4
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• pp.302-308
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• 1988

The paper describes a very simple algorithm for reducing the encoding complexity of vector quantization(VQ), exploiting the feature of a vector currently being encoded. A proposed VQ of 16(=4x4) vector dimension shows a slight performance degradation of about 0.1-1.9dB, however, with only 16-32 among 256 codeword searches, i.e., with just 1/16-1/8 search complexity compared to a full-search VQ. And the proposed VQ scheme is also compared to outperform tree-search VQ with regard to their SNR performance and memory requirement.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.22 no.7
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• pp.1403-1410
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• 1997

Because streaming mode connection server suitable to wide area ATM networks performs transmission, reception and lookup with time restriction for the transmission time of a cell, it has demerits of large cell loss incase that burst traffic occurs. Therefore, in this paper to decrease cell loss we propose a high speed CAM (Content Addressable Memory) which is capable of processing data of streaming mode connections server at a high speed. the proposed CAM is applied to forwarding table VPC map which performs function to output connection numbers about input VPI(Virtual Path Identifier)/VCI(Virtual Channel Identifier). The designed high speed CAM consist of DBL(Dual Bit Line) CAM structure performed independently write operation and match operation and two-port SRAM structure. Also, its simulation verification and full-custom layout is performed by Hspice and Composs tools in 0.8 .$\mu$m design rule.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.22 no.7
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• pp.1505-1514
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• 1997

In this paper, a temporally adaptive layered image sequence coding technique employing H.261 is proposed. In the proposed technique, the frame rate of the base layer is adjusted according to the temporal activity measure based on the rate-distortion function. The base layer is encoded using the H.261. Then, the full frame-rate error image is formed by comparing the original image and the interpolated version of the reconstructed base layer image. The enhancement layer is algo encoded using H.261 but with leaky prdiction to provide robust error resilience. The simulation results show that the proposed technique provides better performance than the twin-H.261 with leaky prediction in both the fixed-rate and variable-rate systems.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.26 no.5B
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• pp.669-676
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• 2001

본 논문은 DCT 기반의 블라인드 워터마킹 방법에 관한 연구 결과이다. 본 논문에서 사용한 4096비트의 워터마크는 512x512 영상이 수용할 수 있는 최대 용량의 절반에 해당한다. 각 워터마크 비트는 8x8 DCT 블록의 12개의 계수에 확산 패턴을 이용하여 삽입하였다. 워터마크 삽입 과정에서, 워터마크 이득 계수는 비가시성과 견고성을 고려하여 최적화되었다. 워터마크 검출 과정에서는, 상관검출을 통하여 워터마크에 대한 예비판정을 하며, 이진가설 검증의 검증 과정을 통해서 예비판정에서의 검출 오류를 수정하였다. 검증 과정에서는 복원된 DCT계수를 이용한 가중치가 사용되었으며, 대부분의 예비 판정의 오류는 검증 과정에서 수정이 되었다. 실험 결과, 영상에 공격이 가해지지 않은 경우는 최종 검증 후에 BER이 0.5% 미만으로 낮아졌으며, 20% JPEG의 고압축에서도 BER이 9% 미만으로 산출되었다. 기존의 방법들과의 비교에서, 제안한 방법은 워터마크 검출 성능 및 워터마크 용량 측면에서 우수하였다.