• Journal of Digital Convergence
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• v.10 no.10
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• pp.283-288
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• 2012

3D is the one of the current world in the spotlight as part of the future earnings of the business sector. Existing flat 2D and stereoscopic 3D to change the 3D shape and texture make walking along the dimension of the real world and the virtual reality world by making it feel contemporary reality of coexistence good show. 3D for the interest of the people has been spreading throughout the movie which is based on a 3D Avata. 3D TV market of the current conglomerate of changes in the market pioneer in the 3D market, further leap into the era of the upgrade was. At the same time, however, the modern man of the world, if becoming a necessity in the smartphone craze new innovation in the IT market mobile phone market and also has made. A small computer called a smartphone enough, the ripple velocity and the aftermath of the innovation of the telephone, the Internet as much as to leave many issues. Smartphone smart phone is a mobile phone that can be several functions. The current iPhone, Android. In addition to a large number of Windows Phone smartphones are released. Above the overall prospects of the future and a business service model for 3D facial expression as input avatar virtual 3D character on camera on your smartphone camera to recognize a user's emotional expressions on the face of the person is able to synthetic synthesized avatars in real-time to other mobile phone users matching, transmission, and be able to communicate in real-time sensibility fused video communication services to the development of applications.

• Proceedings of the Materials Research Society of Korea Conference
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• 2009.11a
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• pp.24.2-24.2
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• 2009

Indium Antimonide(InSb)는 $3{\sim}5\;{\mu}m$대 적외선 감지영역에서 기존 HgCdTe(MCT)를 대체할 물질로 각광받고 있다. 1970년대부터군사적 용도로 미국, 이스라엘 등 일부 선진국에서 연구되기 시작했으며,이온주입, MOCVD, MBE 등 다양한 공정을 통해 제작되어 왔다. InSb 적외선 감지소자는 $3{\sim}5{\mu}m$대에서 HgCdTe와 성능은 대등한데 반해, 기판의 대면적화와 저렴한 가격, 우주공간 및 야전에서 소자 동작의안정성 등으로 InSb적외선 감지기는 냉각형 고성능 적외선 감지영역에서 HgCdTe를 대체해 가고 있다. 하지만 InSb는 77 K에서 0.225eV의 작은 밴드갭을 갖고 있기 때문에 누설전류로 인한 성능저하가 고질적인문제로 대두되었고, 이를 해결하기 위한 고품질 절연막 연구가 InSb적외선 수광 소자 연구의 주요이슈 중 하나가 되어왔다. 그 동안 PECVD, photo-CVD, anodic oxidation 등의 공정을 이용하여 $SiO_2$, $Si_3N_4$, 양극산화막(anodic oxide) 등 다양한 절연막에 대한 연구가 진행되었고[1,2], 절연막과 반도체 사이 계면에서의 열확산을 억제하여 계면트랩밀도를 최소화하기 위한 공정개발이 이루어졌다[3]. 하지만 InSb 적외선 감지기술은 국방 및 우주개발의 핵심기술중 하나로 그 기술의 이전이 엄격히 통제되고 있으며, 현재도 미국과 이스라엘, 일본, 영국 등 일부 선진국 만이 기술을 확보하고 있고, 국내의 경우 연구가 매우 취약한 실정이다. 따라서 본 연구에서는 InSb 적외선 감지기의 암전류를 제어하기 위한 낮은 계면트랩밀도를 갖는 절연막 증착 공정을 찾고자 하였다. 본 연구에서는 n형 (100) InSb 기판 ($n=0.2{\sim}0.85{\times}10^{15}cm^{-3}$ @ 77K)에 PECVD를 이용하여 $SiO_2$, $Si_3N_4$ 등을 증착하고 절연막으로서 이들의 특성을 비교 분석하였다. $SiO_2$는 160, 200, $240^{\circ}C$에서 $Si_3N_4$는 200, $300^{\circ}C$에서 증착하였다. Atomic Force Microscopy(AFM) 사진으로 확인한 결과, 모든 샘플에서표면거칠기가 ~2 nm의 평탄한 박막을 얻을 수 있었다. Capacitance-Voltage 측정(77K)을 통해 절연막 특성을 평가하였다. $SiO_2$와 $Si_3N_4$ 모두에서 온도가 증가할수록 벌크트랩밀도가 감소하는 경향을 볼 수 있었는데, 이는 고온에서 증착할 수록 박막 내의 결함이 감소했음을 의미한다. 반면계면트랩밀도는 온도가 증가함에 따라, 1011 eV-1cm-2 대에서 $10^{12}eV^{-1}cm^{-2}$ 대로 증가하였는데, 이는 고온에서 증착할 수 록 InSb 표면에서의 결함은 증가하였음을의미한다. 암전류에 큰 영향을 주는 것은 계면트랩밀도 이므로, $SiO_2$와 $Si_3N_4$ 모두 $200^{\circ}C$이하의 저온에서 증착시켜야 함을 확인할 수 있었다.

• Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography
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• v.31 no.6_1
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• pp.483-491
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• 2013

By a development of car navigation systems and mobile or positioning technology, it increases interest in location based services, especially pedestrian navigation systems. Updating of digital maps is important because digital maps are mass data and required to short updating cycle. In this paper, we proposed change detection for different network data-sets based on areal feature matching. Prior to change detection, we defined type of updating between different network data-sets. Next, we transformed road lines into areal features(block) that are surrounded by them and calculated a shape similarity between blocks in different data-sets. Blocks that a shape similarity is more than 0.6 are selected candidate block pairs. Secondly, we detected changed-block pairs by bipartite graph clustering or properties of a concave polygon according to types of updating, and calculated Fr$\acute{e}$chet distance between segments within the block or forming it. At this time, road segments of KAIS map that Fr$\acute{e}$chet distance is more than 50 are extracted as updating road features. As a result of accuracy evaluation, a value of detection rate appears high at 0.965. We could thus identify that a proposed method is able to apply to change detection between different network data-sets.

• Journal of the Korean Institute of Gas
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• v.22 no.4
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• pp.32-38
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• 2018

The purpose of this study is to assess quantitatively the amount of leaks and the extent of dispersion in case of a leak at a hydrogen fluoride tank container unloading station, and to suggest a safety improvement plan to prevent recurrence of similar accidents. In 2012, Company H leaks 8 tonnes of tank containers with a maximum storage capacity of 18 Ton, causing it to become a social issue. As a result of calculation using Gaussian plume model, the concentration was estimated to be more than 20ppm from the leak point to 1,321 m radius. The leakage of hydrogen fluoride from the company R in 2014 was estimated to be 11.02 kg, of which 2.9 kg was treated by the scrubber. As a result of calculation using Gaussian plum model, the damage range with a concentration of 20ppm or more from the leak source was estimated to be 69 m in radius. As a result of comparing the above two accidents, it was found that the leakage amount was about 987 times different and the damaged site was more than 19 times different. Therefore, it was concluded that it was necessary to control the wearing of the protective equipment, the enclosure of the unloading site, the installation of the scrubber, and the emergency training to avoid the accidental leakage of a hydrogen fluoride from the unloading site.

• The Journal of the Korea Contents Association
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• v.11 no.12
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• pp.431-441
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• 2011

As environment issues arise, environment-friendliness in convention industry has also been discussed. Guidelines are presented by government and convention organization to settle environment-friendly convention. However, these efforts focus on organizers and suppliers, lacking in understanding convention participants. This study tries to approach in perspective of convention participants to get useful information for environment-friendly convention. The research explores how they are aware of environment issues and accept environment-friendly convention attributes according to their cognition of environment. It also examines the relationship between those attributes and intention of participation according to their awareness of environment. The results shows that participants have high awareness about environmental issue and recognized high necessity for set up for specific action plan. They showed highest acceptance of venue followed by activity, transportation, food & beverage, and operation. High awareness group showed higher acceptance of environment-friendly convention attributes than low awareness group. 'Transportation', 'activity', and 'operation' among five attributes were examined to have significant effect on intention of participate environment-friendly convention in both groups.

• Korean journal of communication and information
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• v.45
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• pp.463-495
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• 2009

Korea has started to pay attention to civic journalism in recent years while it initially emerged in the United State since late 1980s. Furthermore, albeit some discernable limitations, the Internet has played an important role in fertilizing civic journalism as indicated by the emergence of online news media and the increasing number of civic journalists engaged in the online activities. Whereas there are some patterns of civic journalism practice and the civic influence commonly observed in both countries, there are significant factors that distinguish th1e case of Korea from that of the U.S. The purpose of this study is to compare the two countries in terms of the patterns of civic journalism practice and civic influence. This goal has been achieved by analyzing ‘CNN iReport’ in the U.S. and ‘Ohmynews’ in Korea, both of which are prime civic journalism websites. Those websites have been compared in light of four standards of civic journalism: first, the degree of post-objectivism; second, the search for effective resolutions of social problems; third, civic engagement in the news making process to enhance bottom-up agenda setting; and finally, citizens’ interaction with the news. The results reveal that the American civic journalism website is more likely to shed light on deviating from the principle of objectivity and seeking alternatives and resolutions of social problems. Moreover, it effectively utilizes civic engagement in the news Abstracts 551 making process as indicated by the higher numbers of civic journalists and civic news resources. Also, readers’ interaction with the news was found to be more active in the iReport website than in the Ohmynews.

• Journal of Digital Convergence
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• v.15 no.8
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• pp.15-23
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• 2017

The purpose of this study is to examine the issues of digital textbook policy in Korea, using the four dimensional model of Cooper, Fusarelli, & Randall(2004). Building upon systematic review of the policy documents, journals, and articles, I found some issues and implications for the betterment of the policy: From normative dimension, it is important to overcome widespread view of textbook based on positivist epistemology. From structural dimension, we need to move to curriculum-based textbook system and stabilize the organization in authority within the Ministry of Education. From constituentive dimension, much more consideration and support within the authority are to be provided to teachers and students. Lastly, it is critical to develop and disseminate an effective instructional model and build capacity of teachers' ICT from technical dimension. Building upon the results, clarification of policy objectives, establishment of priorities for school grades and subjects in the mid- to long-term perspective, and the establishment of communicative venue for the gathering of opinions of teachers and students who are key participants and activation of operations.

• Journal of Science and Technology Studies
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• v.18 no.2
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• pp.7-41
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• 2018

The projects of citizen science which is originated from citizen data collecting action driven by governmental institutes and science associations have been implemented with different form of collaboration with scientists. The themes of citizen science has extended from the ecology to astronomy, distributed computing, and particle physics. Citizen science could contribute to the advancement of science through cost-effective science research based on citizen volunteer data collecting. In addition, citizen science enhance the public understanding of science by increasing knowledge of citizen participants. The community-led citizen science projects could raise public awareness of environmental problems and promote the participation in environmental problem-solving. Citizen science projects based on local tacit knowledge can be of benefit to the local environmental policy decision making and implementation of policy. These social values of citizen science make many countries develop promoting policies of citizen science. The korean government also has introduced some citizen science projects. However there are some obstacles, such as low participation of citizen and scientists in projects which the government has to overcome in order to promote citizen science. It is important that scientists could recognize values of citizen science through the successful government driven citizen science projects and the evaluation tool of scientific career could be modified in order to promote scientist's participation. The project management should be well planned to intensify citizen participation. The government should prepare open data policy which could support a data reliability of the community-led monitoring projects. It is also desirable that a citizen science network could be made with the purpose of sharing best practices of citizen science.

• The Journal of the Korea Contents Association
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• v.20 no.2
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• pp.36-50
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• 2020

YouTube as a news channel is gaining popularity because it offers more interesting and in-depth news than traditional news media. However, YouTube has been criticized for its distribution of false information (or fake news) in Korea. Politicians are actively proposing a variety of bills to regulate YouTube's false information and a lot of studies proposed how to regulate YouTube's false information. This study looked at the users' experience and perception of false information and identified factors that affected the regulation of YouTube news. The results showed that the conservatives and the moderate groups were exposed to false information more than the progressives, and those in their 60s believed that false information was distributed on YouTube rather those in their 20s to 50s. The more people value freedom of expression, the more people trust TV Chosun news, the more people tend to oppose the regulation of information on YouTube. On the other hand, it turns out that the more people trust the news on both terrestrial broadcasting networks and JTBC, and the more people value the enlightening aspects on the news, the more they approve of Youtube regulation.

• Proceedings of the Korea Water Resources Association Conference
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• 2011.05a
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• pp.454-454
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• 2011

녹색성장은 최근 세계적인 이슈가 되고 있다. 세계물위원회(World Water Council, WWC)의 경우 2012년 마르세유에서 개최되는 제6차 세계물포럼(World Water Forum, WWF)에서 물문제 해결을 위한 신개념 패러다임으로서 '녹색성장(Green Growth)'을 채택하기 위한 협력방안의 필요성을 제안하고 있다. 우리나라에서는 이미 녹색성장을 국가 슬로건으로 선정하고 글로벌 녹색성장연구소(Global Green Growth, GGGI)를 설립하는 등 녹색성장을 선도하고 있다. 이는 물의 중요성에 비추어볼 때 녹색성장을 물 분야에 확산시킬 수 있는 적절한 기회로 보인다. 녹색성장은 물 관련 환경서비스가 환경오염 없는 경제성장을 이룩하는 데 주요한 역할을 수행할 수 있다는 가능성과 당위성에서 파생된 최근에 만들어진 개념으로서, 물 분야의 경우 녹색경제에 있어서 중요한 역할을 수행해왔으며 이후 지속적인 인구증가, 물 소비패턴의 변화, 에너지비용 증가, 기후 변화 등으로 물 분야의 중요성은 더욱 커질 것으로 기대된다. 이처럼 물 관리는 경제발전, 재해로부터 보호, 인간의 건강 및 생태계와 삶의 질을 위하여 필수적이기에 녹색성장에 있어 중요한 역할을 수행하고 있다. 하지만 올바른 물 관리가 녹색성장에 기여할 수 있는 방법에 대해서는 아직 명확화 구체화되지 못하고 있는 실정이다. 이에 따라 녹색성장을 새로운 국가 성장 동력의 패러다임으로 구축하기 위해 수자원분야에서의 녹색성장방법론을 정립하고, 선진국과 개도국 정부들의 균형 있는 참여를 통한 글로벌 파트너십 구축이 요구되고 있으며, 이를 세계물위원회 등 국제기구와 공동으로 연계시킨다면 상당한 시너지 효과가 기대된다. 물관리는 국가의 경제발전, 재해로부터 생명과 재산의 보호, 인간의 건강 및 생태계 다양성 및 건전성 유지와 삶의 질을 향상을 위하여 매우 중요하며, 환경보존과 경제성장을 동시에 추구하는 녹색성장을 실현하는 데 있어서도 가장 핵심적인 사항이라고 할 수 있다. 그러나 올바른 물 관리가 녹색성장에 기여할 수 있는 방법에 대해서는 아직 명확하고 구체화 되지 못하고 있는 실정이다. 따라서 본 연구에서는 '물과 녹색성장'의 이론적 배경, 필요성, 개념정립, 벤치마킹 사례, 국제사회에서의 녹색성장과 관련한 논의 기구 및 흐름 등의 이해를 기초로 녹색성장을 통한 경제성장의 상호작용과 선순환구조를 체계화시키기 위한 균형방안을 제시하고자 한다. 또한 수자원 및 하천관리 분야에서의 WGG구현을 위한 정책제안 및 실행방안이 담긴 중장기 로드맵을 구축하여 물을 통한 성장의 발판을 마련하고자 한다.