• Proceedings of the Korea Institutes of Information Security and Cryptology Conference
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• 2001.11a
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• pp.293-296
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• 2001

본 논문은 GF(2$^{m}$ )상에서 파워썸 연산을 수행하는데 필요한 새로운 알고리즘과 그에 따른 병렬 입/출력 구조를 제안한다. 새로운 알고리즘은 최상위 비트 우선 구조를 기반으로 하고, 제안된 구조는 기존의 구조에 비해 낮은 하드웨어 복잡도와 적은 지연을 가진다. 이는 역원과 나눗셈 연산을 위한 기본 구조로 사용될 수 있으며 암호 프로세서 칩 디자인의 기본 구조로 이용될 수 있고, 또한 단순성, 규칙성과 병렬성으로 인해 VLSI 구현에 적합하다.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.23 no.8
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• pp.1977-1983
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• 1998

An algorithm-based fault tolerant scheme for the vector convolution is proposed employing the positive and negative checksum vectors that are defined in this paper based on the encoder vector. The proposed scheme is implemented on the aray processor, and then the amount of redundancy is examined thrugh the complexity analysis.

• Proceedings of the Korea Information Processing Society Conference
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• 2016.10a
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• pp.352-355
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• 2016

스마트폰의 대중화, 카메라 기술력의 향상 등으로 인해 소셜 네트워킹 서비스 내에서는 고화질 이미지 콘텐츠에 대한 수요가 증가하고 있다. 하지만 모바일 기반의 서비스에서는 데이터 소비라는 이슈와 직면하게 되고, 이에 본 연구는 통신 프레임워크를 통해 세 가지 이미지 전송모드를 제공함으로써 데이터 사용량에 따른 동적 이미지 전송모드 변경 방법을 고안하게 되었다. 정해준 기준 값과 데이터 잔여량을 비교함으로써, 원본이미지, 썸네일 이미지, 파일링크의 세 가지 전송모드 중 적절한 모드를 선택하도록 하였다. 이에 사용자는 충분한 데이터를 가지고 있을 시 고화질의 이미지 콘텐츠를 제공 받을 수 있으며, 데이터 잔여량이 얼마 남지 않았을 때는 데이터 소비를 최소화함으로써 데이터 고갈을 예방할 수 있게 된다.

• Proceedings of the Korea Information Processing Society Conference
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• 2000.10a
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• pp.731-734
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• 2000

최근 인터넷 사용의 증가와 디지털 카메라, 스캐너등의 디지털 장비의 보급으로 인터넷을 통한 디지털 이미지의 표현과 전시효과가 필요하게 되었다. 이러한 디지털 이미지들을 보다 쉽게 효율적으로 전시하고 다루기 위한 방법으로 이 시스템을 제안한다. 이 시스템은 웹에서 이미지 정보를 공급하려는 제공자가 쉽게 자신의 이미지 서비스를 제공할 수 있으며, 서버상의 이미지를 자동적으로 추출하여 이미지 뷰, 업로드, 썸네일, 슬라이드, 검색, 설명부가, 사용자별 옵션, 간단한 영상처리, 풍선말 이미지 메일 전송 둥의 다양한 기능을 서비스를 할 수 있도록 구성되어 있다. 또한 그 기능을 동영상으로 확장하여 보다 동적인 인터넷 전자앨범을 구현하였다.

• Proceedings of the Korean Society of Broadcast Engineers Conference
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• 2020.11a
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• pp.301-304
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• 2020

시대가 변화됨에 따라 다양한 비대면 방송들이 증가하는 추세를 보이고 있다. 가상현실(VR)을 이용한 쇼케이스부터 실시간 쌍방향 소통을 활용한 무대까지 멀티뷰를 활용한 방송들이 여러 방향으로 활용되고 있으며. 이러한 환경 속에 관객과 조금 더 밀접한 방송을 진행하기 위한 여러 방법이 시도되고 있다. 따라서, 본 논문에서는 현장에서 녹화되고 있는 모든 카메라 소스들을 썸네일 사이즈로 만들어 한눈에 알아볼 수 있는 플랫폼을 구성하여 시청자가 원하는 카메라를 선택해 보고 싶은 장면을 선택할 수 있는 시스템을 제안한다.

• Research in Plant Disease
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• v.19 no.4
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• pp.288-293
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• 2013

In worldwide, viral diseases of apple plants has caused the serious problems like reduced production and malformation of fruits. Also, the damages of apple plants by virus and/or viroid infection (Apple chlorotic leaf spot virus, Apple stem grooving virus, Apple mosaic virus, and Apple scar skin viroid) were reported in Korea. However there is few report about the protection approach against the infection by apple viruses. Therefore, this paper introduced the experimental protocol for the development of virus-free apple cultivars (Danhong, Hongan, Saenara, Summerdream). Apple plants were treated at $37^{\circ}C$ for 4 weeks and shoot tips were cultured in vitro. After heat treatment, the detection of apple viruses was performed by RT-PCR using virusspecific detection primers in new apple cultivars. With the heat treatments followed by in vitro shoot tip culture, the proportion of virus-free stocks of 'Danhong', 'Hongan', 'Saenara', and 'Summerdream' was 28%, 16%, 12%, and 12%, respectively. Taken together, this approach can be a good tool for production of virus-free apple stocks.

• Journal of Broadcast Engineering
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• v.13 no.2
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• pp.222-235
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• 2008

Recently, as growing of high definition media services like HDTV and IPTV, fast moving picture manipulation techniques need to meet what those services require. Especially, a fast reduced-size image extracting method is required in the areas of video indexing and video summary Conventional DC image extracting methods, however, can't be applied to H.264/AVC streams since a spatial domain prediction scheme is adopted in H.264/AVC intra mode. In this paper, we propose a theoretical method for extracting a thumbnail image from an H.264/AVC intra frame in the frequency domain. Furthermore, the proposed scheme can extract the thumbnail very fast since all operations are applied to transform coefficients directly, after a general equation for the thumbnail extraction in nine H.264/AVC intra prediction modes is introduced, an LUT(Look Up Table) for each mode is designed. Through the implementation and performance evaluation, while the subject quality difference between the output of our scheme and a conventional output is negligible, the former can extract the thumbnail faster then the latter by up to 63%.

• Journal of the Korean Solar Energy Society
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• v.28 no.4
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• pp.68-75
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• 2008

The purpose of this research is revise the value yield to compensate of measure the difference between computer simulation and the measurement value on the two methods which can calculates thermal performance. The way is need to understand about thermal performance, air tightness, simulations and comparisons of analysis to influence the value of each identified. The opening type of the windows and doors to be used at the analysis are T/T, L/S and SL Different condition of the windows and doors excluded except the opening type. Each of the four samples was selected by the way of opening. Result of the analysis of the difference between measurement and simulation are that T/T approach 5.3%, L/S approach 15.7%, SL approach 21% and the more air-tightness guarantees less difference of the numerical value. Each compensation value calculates by the correlation regression analysis and the air-tightness data. After the compensation of the resulting difference in T/T, L/S, SL indicate 5.4%, 2.5%, 1.0% respectively.

• Korean Institute of Interior Design Journal
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• v.19 no.3
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• pp.77-85
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• 2010

The Therme Vals is a hotel and spa which combines a complete sensory experience designed by Peter Zumthor. This study aims to find emotional design approaches of the Therme Vals through references, observation from site visit, interview and discussion related to this topic. This space was designed for visitors to luxuriate and rediscover the ancient benefits of bathing. The combinations of light and shade, open and enclosed spaces and linear elements make for a highly sensuous and restorative experience. The study observed the emotional design characteristics of the Therme Vals through space approach, aesthetic and experiential sides. For space approach side, emotional experience in gradual process to approach the space was mentioned, for aesthetic side, mystical combination of light, stone and water was observed, for experiential side, 5 senses experience and space programing for adjusting the density of the space were observed. This study found that the spa has the quality of spiritual, soul-touching delight like religious experience. The fascination for the mystic qualities of a world of stone within the mountain, for darkness and light, for light reflections on the water or in the steam saturated air, pleasure in the unique acoustics of the bubbling water in a world of stone, the ritual of bathing-all these notions were explained in Peter Zumthor's construction details. In the result of the interview and discussion, people love the space and praised it highly for the emotional design regardless of space experience, age, sex or ethnicity. Emotional design approaches based on human nature, materiality, and memory of the places is more powerful than other emotional design ideas with technical devices, special themes, digital effects, vivid colors and shapes.

• Journal of the Korea Computer Graphics Society
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• v.16 no.4
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• pp.35-40
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• 2010

Due to the distribution of digital camera, many work for photo management has been studied. However, most work use a sequential grid layout which arranges photos considering one criterion of digital photo. This interface makes users have lots of scrolling and concentrate ability when they manage their photos. In this paper, we propose a clustering method based on a temporal sequence considering their color similarity in detail. First we cluster photos using Cooper's event clustering method. Second, we makes more detailed clusters from each clustered photo set, which are clustered temporal clustering before, using maximal clique finding algorithm of interval graph. Finally, we arrange each detailed dusters on a user screen with their overlap keeping their temporal sequence. In order to evaluate our proposed system, we conducted on user studies based on a simple questionnaire.