• Proceedings of the Korea Contents Association Conference
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• 2011.05a
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• pp.537-538
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• 2011

글로벌 NFC 시장이 초기단계로, 시험 개발에서 점차 상용화 단계로 접어들고 있다. 이 시장의 확산요인은 차후 모바일폰에 NFC 솔루션을 광범위하게 도입하는 것으로, 글로벌 모바일폰 시장에서 NFC 기반의 모바일폰은 2015년 8.63억대에 이를 것이라고 전망되고 있다. 시장 조사기관인 프로스트 앤 셀리반(Frost & Sullivan)의 조사보고서에 의하면 2010년~2015년까지 NFC 기반 모바일 결재 시장이 연간 118% 이상 성장할 것으로 예상했다. 본 연구는 최근 국내외 모바일 RFID 시장 동향 분석과 NFC 기반 모바일 스마트 라이프 서비스 활성화 방안에 대하여 연구한다.

• Fashion & Textile Research Journal
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• v.12 no.1
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• pp.1-9
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• 2010

A purpose of this study was to find out how the casual and formal style clothes of stripe pattern giving variety by pattern direction, pattern width, and contrast coloration have an effect on image of wearers. 432 stimuli were made and 2,800 testee evaluated them using semantic differential scale. As a result, five image dimensions were drawn as a factor of attractiveness, activeness, gracefulness, visibility, and tenderness. In consequence of analysing the image difference by stripe pattern and clothing style, the stripe pattern and clothing style affect image presentation as a significant clue. And besides, as a result of positioning stimuli by image, pattern direction, coloration, and tone combination were important clues that decide image. Consequently, clothing style, stripe pattern, and contrast coloration were made clear as an efficient parameter in image presentation of clothing wearers.

• Proceedings of the Korean Society of Broadcast Engineers Conference
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• 2006.11a
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• pp.77-80
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• 2006

본 논문에서는 블록 기반의 영상압축에 있어서 선택적 방향성 보간을 이용하는 공간적 에러 은닉 기법을 제안한다. 기존의 공간적 경계 정합 기법은 에지가 단순한 영역에서는 좋은 성능을 보이지만, 손실 블록 내에서 에지의 변화가 큰 영역에서는 좋지 못한 성능을 보인다. 제안된 기법은 이웃한 상하 블록들을 이용하여 에지의 연결성을 추정하고, 이에 따라 공간적 경계정합 기법과 이동 스트라이프 정합 기법을 선택적으로 이용한다. 따라서 에지변화에 적응적으로 대응함으로써 우수한 복원영상을 구할 수 있다. 제안된 기법은 슬라이스 단위의 에러에 대해 적합한 방식으로써, 복잡도가 낮을 뿐만 아니라 객관적 주관적으로 우수한 복원 화질을 얻게 해준다.

• Proceedings of the KIEE Conference
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• 1987.07a
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• pp.34-37
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• 1987

Theoretical calculations are presented for analying lateral modes of stripe geometry lasers. The solution technique affords a matching between the fields of the active layer and those of the surrounding passive layer. The fields are written as a liner combination of Hermite-Gaussian function. Therefore fields have been described with a single H - G function. The lowest-order mode spreading is calculated and related to the gain distribution.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• v.9 no.2
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• pp.763-767
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• 2005

RAID were proposed to stored double data or used to parity logging methode for error recovery. We describe a technique for automating the execution of redundant disk array operation, including recovery from errors, independent of array architecture. RAID5 provide highly reliable cost effective secondary storage with high performance for read access and large write accessed. It discusses the two architectural techniques used in disk arrays, striping across multiple disks to improve performance and redundancy to improve reliability. In this paper we compare with performance and reliability in RAID5 real/write to file and stripe size. than suggest to algorithm.

• 한국HCI학회:학술대회논문집
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• 2008.02b
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• pp.158-164
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• 2008

This study was conducted for raising the considering the dynamical context of mobile phone use environment in the mobile-phone research. For this I identified the characteristic of the mobile phone use. The first characteristic is that the mobile phone is the context sensitive device. Also, it reflects the user's life pattern because it is the very personal device. I defined the context of mobile phone use with the basis on this identification of those characteristics. I referenced the definition, 'situational context', defining the mobile phone use context. Also, I set up the research scope within the user task that is influential from the situational context, I named this kind of task as the 'contextual task'. I developed the Contextual Task Model in this study. I named the model as the 'ESR Model'. The reason that I developed this contextual task model is that this model can help novice designers and designers unfamiliar with an application domain understand the user behavior and user centered design. And also this model can be effective to communicate each other, I identified the user's contextual tasks three kinds of model. First, the Extend Model includes user tasks that related to extending from user physical working space to the virtual level. Second model is Synchronize Model, which includes issues that lesson the blocking when use several functions at a time or sequentially. Third model is Replace Model, which is come from the characteristic of user life pattern to use the mobile phone. Finally, I proposed an application of this model, CIQ. Through the process to make CIQ I proved the effectiveness of this ESR Model.

• Journal of the HCI Society of Korea
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• v.13 no.1
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• pp.21-28
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• 2018

The rapid increase of Sinlge-person household and the increase in the use of smart devices necessitate the context analysis of Sinlge-person household and specific design direction for Sinlge-person household products. Previous studies have analyzed the overall context of smart devices without distinguishing between Sinlge-person household and a household. However, since the number of family members, age distribution, and residential space are different in the case of Sinlge-person household, it is necessary to analyze the different behaviors of smart devices. Therefore, this study limits the use environment of smart device of Single-person household to the scope of investigation, and based on the theoretical background, defines the existing comprehensive context based on user's situation that lasts for a certain interval. For the concrete and empirical research results, Consolidated Flow Model was constructed through Contextual Task through user research. This shows the interaction characteristics such as the guarantee of physical space, efficiency, lifestyle reflection, and safety assurance of Single-person household.

• The Transactions of the Korea Information Processing Society
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• v.4 no.5
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• pp.1172-1181
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• 1997

A militimedia data is a data mixed of formatted data like an audio and video. Multimedia data has characteristics that it need large amount of storage,wide network bandwith andreal time responsibolity. Because of these characteristocs, the VOD server and continous media storage server have a disk stripe structure or disk stripe sructure or disk array structure(RAID).In the parallel disk access system,high-speed play-back of continous media using segment interleavung may not ensure Qos pf other cioents because of the concentrated load within some disks. The load concentration of disks is related to both the number of disks in the system and playback rate of contimous media.In this paper. we describe that high-speed playback scheme,which is independent of the number of disk and plyback rate can be achieved by technique of changing the in-teval of access to segnent location.We show the experimental result of this technique in this pater.

• Korean Journal of Materials Research
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• v.8 no.9
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• pp.871-875
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• 1998

High aspect ratio microstructures were fabricated by photolithography. The material for the microstructure was photosensitive glass which has good mechanical and electrical insulation properties. The photosensitive glass was exposed to ultraviolet light at 312nm through a chromium mask in which the structures are drawn. After heat treatment process over $500^{\circ}C$, the photosensitive glass was etched in a 10% hydrofluoric acid solution with ultrasonic conditions. Final dimension of the micro-framework was greatly dependent on the thickness of photosensitive glass, mask pattern, ultraviolet light exposure and etching conditions. The maximum aspect ratio of the micro-framework obtained from this work was over 30.

• The Journal of the Korea Contents Association
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• v.18 no.1
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• pp.441-451
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• 2018

The main point of this study is to use the principle of Coriolis force and the sense of fingertips to scratch the surface of the wall by high-speed rotation (RPM) to push the texture of the stripe from the inside to the outer wall, and to express the beautiful, dynamic and distinctive outer wall texture that is diversified by Coriolis force (centrifugal force). This is designated as Coriolis force technique. In addition, instead of the traditional flat bottom foot onggi molding technique, a new type of flat bottom foot that uses the electric wheel to push the cylinder from inside to out to expand the outer wall and to spread the bottom of foot flatly. The purpose of this study is to create a modernized, distinctive, new interior work by fusing these techniques.