• Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
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• 2006.11a
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• pp.66-66
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• 2006

Development of ArF Photo-lithography process has proceeded with the increase of numerical aperature (NA) and the decrease of resist thickness. It makes many problems such as cost and process complexity. A novel spin-on hard mask system is proposed to overcome many problems Spin-on hard mask composed of two layers of siloxane and carbon. The optical thickness of two layers is designed from reflectivity measurement at specified n, k respectively. The property of photo-resist shows different results according to Si contents. Si-contents was measured XPS(X-ray Photoelectron spectroscopy).

• Proceedings of the Korean Society of Computer Information Conference
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• 2019.07a
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• pp.429-432
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• 2019

본 작품은 학생들의 캡스톤디자인 작품이다. 본 작품은 부모와 아이(유아기)가 집에서 책을 단순히 읽는 것을 벗어나 동화를 직접 창작할 수 있는 미래형 포토 CMS를 개발하고자 한다. 또한 스마트기기에 저장되어 있는 부모와 아이의 사진을 동화에 감정이 이입되는 방법으로 개발되었으며, 창작자에 따라서는 부모와 아이의 역할을 바꾸어 수행해 봄으로써 상대방의 소중함을 깨우칠 수 있다는 장점이 있다. 본 작품은 스마트 교육과 디지털 교과서 등의 융합교육으로 소비자 니즈(Consumer needs) 변화로 새로운 트랜드를 정립하고, 특히 부모와 아이가 동시 출연하여 동화를 창작해 나가는 친화적/창의력 학습을 할 수 있기 때문에 아이의 인지 및 감성력 향상에 도움을 주고자 개발하였다.

• The Journal of the Korea Contents Association
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• v.10 no.10
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• pp.120-127
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• 2010

Today we always can take a picture and enjoy it anywhere and anytime with a propagation of digital camera and camera phone. Even though the amount of digital picture content produced in every day life has been increasing, the way of enjoying it was just with phones or PC monitors. A small size screen of a cell phone and a desktop monitor are not suitable environment for enjoying digital picture, so the new market for digital photo frame has been opened. Until now, various kind of digital photo frames of many manufactures have been released for several years, but they have similar interaction way each other due to the limitation of their hardware specification so don't fill the intuitive mental model that users have about the product called a photo frame. Thus, this research aims to suggest an interaction way of digital photo frame providing with better usability and emotional satisfaction according to the spatial environment that it's located and users' behaviors.

• The Journal of the Korea Contents Association
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• v.15 no.1
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• pp.74-85
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• 2015

This study on the proofing what used to correct the color difference between the photo image and offset press. Printing photos with color offset press always make the differs, because of the difference in gamut. Photographer hopes to be able to use the proofing with inkjet printer for reduce these differences. In this study, I experiment with various ways for the proofing by photographer directly. It is using the ink jet printer and image outputs of the various mode was applied to a variety of color setting value. And calculate the output image using a spectrophotometer and compared with the image of offset press. At last I can found a very similar color setting value with the offset image. After all this research is to obtain a result of finding out proofing work flow through method to measure and how to apply various color setting value results.

• The Journal of the Korea Contents Association
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• v.15 no.6
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• pp.283-289
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• 2015

Recently, high energy photon radiotherapy is a growing trend for increasing therapy results. Commonly, if you use high energy photons above 6~8 MeV nominal accelerator voltage, It lead the photo-nuclear reaction and the generation of photo-neutron are accompanied and these problematic factors are issued in the view of radiation protection. Therefore, in this study analyzed for dose distribution of photo-neutron in radiotherapy room based on MCNPX. As a result, absorbed dose is increased sharply from 10 MV to 12 MV. It was founded that the rapid increasement of photoneutron fluence was related to the absorbed dose at above 10 MV. Also, in case of the recommendation of ICRP 103, the outcome of an exchanged equivalent dose which based on calculated an absorbed dose, showed lower equivalent dose than ICRP 60 by reflecting the contribution of secondary photon for absorbed dose of human body in the low energy band.

• Journal of Digital Convergence
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• v.11 no.10
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• pp.679-687
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• 2013

Currently, we are living in the era of digital media that puts the technologies in front which is called digital. Based on the characteristic of 'de-materialistic', human senses have been extended more than ever and there is no exception on those influences. Even though the existence of media seriously brought the identity and value of the painting into a question after the emergence of analog photos, advent of digital photos are raising the wind of new paradigms and values creation more seriously than ever. Unlike analog photos of the past which go through chemical process, true nature of digital photo goes through the digital process which is represented by 0 and 1. This didn't bring the loss of the original, but rather brought the creation of the copy which excels the original through retouching and consequently, destroyed the traditional value which is referred as an original. Like this, digital photo image has aesthetics and value of existence which is differentiated from analog photo because it has essentially different structures and characteristics with analog photo.

• Journal of Internet Computing and Services
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• v.14 no.2
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• pp.1-13
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• 2013

Recent advance and popularization of smart devices and web application services based on cloud computing have made end-users to directly produce and, at the same time, consume the image contents. This leads to demands of unified contents management services. Thus, this paper proposestag clustering method based on semantic similarity for effective image categorization. We calculate the cost of semantic similarity between tags and cluster tags that are closely related. If tags are in a cluster, we suppose that images with them are also in a same cluster. Furthermore, we could recommend tags for new images on the basis of initial clusters.

• The Journal of the Korea Contents Association
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• v.19 no.2
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• pp.1-10
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• 2019

The present research aims to identify the issues that occurred when uploading stock photos to the internet-based stock image agencies and to develop technical solutions based on web service technologies. We identify the issues by examination of previous studies and stock photo uploading systems of major three agencies currently in service. As such, we develop web service technology by focusing on the following matters. First, we apply an automatic tag system to ensure convenience. Second, to ensure safety, we apply a technology that easily enables prevention of portrait rights violations and trademark infringements. We also prepare for measures against possible harmfulness. Third, to ensure completeness, we apply a method which resolves upload failure issues that frequently occurred in the past. In particular, the present research is significant as it applies an automatic image analysis system based on Google Cloud Vision API as the artificial intelligence-based image processing technology. In addition, we develop a web service program which improves user access by using SNS-type screen composition.

• Current Photovoltaic Research
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• v.1 no.1
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• pp.27-32
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• 2013

We investigated the growth mechanism of amorphous-phase Si thin films in order to improve the film characteristics and circumvent photo-degradation effects by implementation of hot-wire chemical vapor deposition. Amorphous silicon thin films grown in a silane/hydrogen mixture can be decomposed by a resistive heat filament. The structural properties were observed by Raman spectroscopy, FTIR, SEM, and TEM. The electrical properties of the films were measured by photo-conductivity, dark-conductivity, and photo-sensitivity. The contents of Si-H and $Si-H_n$ bonds were measured to be 19.79 and 9.96% respectively, at a hydrogen flow rate of 5.5 sccm, respectively. The thin film has photo-sensitivity of $2.2{\times}10^5$ without a crystalline volume fraction. The catalyst behavior of the hot-wire to decompose the chemical precursors by an electron tunneling effect depends strongly on the hydrogen mixture rate and an amorphous Si thin film is formed from atomic relaxation.

• Proceedings of the Korea Contents Association Conference
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• 2015.05a
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• pp.327-328
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• 2015

디지털시대에서 미국카툰시장은 3D 디지털 기법을 충분히 활용하여 마치 실사 같은 영화(Photo realistic movie)를 제작하는 한편. 일본의 경우는 그들만의 독특한 전통 셀 애니메이션(cell animation) 형식을 3D CG 기술과 결합하여 새로운 제작방식의 애니메이션을 제시하고 있다. 본 연구는 일본 2D 애니메이션에서 제작 방식을 유지해야 할 당위성을 카툰 렌더링 3D의 제작방식에 도입하여, 융합한 사례 분석을 통해 2D 애니메이션의 필요성과 중요성을 제시하려 한다.