• Proceedings of the Korean Society of Broadcast Engineers Conference
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• 2022.06a
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• pp.829-831
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• 2022

포인트 클라우드 콘텐츠는 움직임이 있는 콘텐츠를 연속된 프레임에 3 차원 위치정보와 대응하는 색상으로 기록한 데이터이다. 강체 포인트 클라우드 데이터를 정합하기 위해서는 고전적인 방법이지만 강력한 ICP 정합 알고리즘을 사용한다. 그러나 국소적인 모션 벡터가 있는 비 강체 포인트 클라우드 콘텐츠는 기존의 ICP 정합 알고리즘을 통해서는 프레임 간 정합이 불가능하다. 본 논문에서는 비 강체 포인트 클라우드 콘텐츠를 지역적 확률 모델을 사용하여 프레임 간 포인트의 쌍을 맺고 개별 포인트 간의 모션벡터를 구해 정합 하는 방법을 제안한다. 정합 대상의 데이터를 2 차원 투영을 하여 구조화시키고 정합 할 데이터를 투영하여 후보군 포인트를 선별한다. 선별된 포인트에서 깊이 값 비교와 좌표 및 색상 유사도를 측정하여 적절한 쌍을 찾아준다. 쌍을 찾은 후 쌍으로 모션 벡터를 더하여 정합을 수행하면 비 강체 포인트 클라우드 콘텐츠 데이터에 대해서도 정합이 가능해진다.

• Journal of Broadcast Engineering
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• v.6 no.3
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• pp.260-269
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• 2001

This paper proposes an efficient algorithm extracting anchor ranges that exist in news video for the unit structuring of news. To this purpose, this paper uses anchors face in the frame rather than the cuts where the scene changes are occurred. In anchor range, we find the end position (frame) of anchor range with the FRFD(Face Region Frame Difference). On the other hand, in not-anchor range, we find the start position of anchor range by extracting anchors face. The process of extracting anchors face is consists of two parts to enhance the computation time for WPEG decoding. The first pact is to find candidates of anchors face through rough analysis with partial decoding MPEG and the second part is to verify candidates of anchors face with fully decoding. It is possible to use the result of this process in basic step of news analysis. Especially, the fast processing and the high recall rate of this process are suitable to apply for the real news service.

• Journal of KIISE:Computing Practices and Letters
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• v.5 no.6
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• pp.771-781
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• 1999

오늘날의 컴퓨팅 환경은 통신 네트워크의 복잡성과 다양한 멀티미디어 서비스 처리를 위해 객체지향 기술을 분산 시스템에 도입하고 통신망을 소프트웨어 계층적 모델로 구조화한 개방형 정보 통신망 구조 연구가 활발히 진행되고 있다. 본 논문은 분산환경에서 멀티미디어 스트림 데이타를 전송하기 위한 아키텍쳐에 관한 모델의 설계 및 구현에 관한 것으로 분산 환경에서 멀티미디어 스트림 데이타를 효율적으로 전송할 수 있는 구조를 제시하고 있다. 설계한 구조는 Point-to-Point와 멀티캐스트를 지원하며 컴퓨터 통신망에서 멀티캐스트 연결을 효율적으로 관리하고 추후 기능 확장 및 기능 변경이 용이하도록 모듈화하고 유연성을 가지는 연결 관리 구조를 설계하고 구현하였다. 신호기능은 CORBA(Common Object Request Broker Architecture)의 ORB를 이용하여 실현하였으며, 데이타 전송 기능은 TCP/IP연결을 이용하였다. 이렇게 신호처리 부분과 데이타 전송 부분을 독립적으로 만들어서 하부망 기술에 독립적인 연결 관리 구조를 채택하고 있으므로 향후 다른 환경에서도 신호처리 부분을 그대로 적용할 수 있다. 분산 객체 개념을 적용하여 연결 관리 기능을 분산 객체화 하였으며 각 분산 객체간 인터페이스를 OMG(Object Management Group) IDL(Interface Definition Language)로 정의함으로써 유연성을 갖도록 하였다.AbstractThis paper proposes communication service architecture to support dynamic communication configuration and multiple connection management which are required to handle a variety of multimedia multicast application. Our communication service architecture was designed to fulfil the objectives as the following:- To build a common networking system for various multimedia multicast services- To build a platform for rapid service development and provisioning- To provide service networking independent on transport network technologiesWe implemented communication service architecture based on Common Object Request Broker Architecture (CORBA) for multimedia multicast applications. Our communication service architecture is distributed and object-oriented for extensibility and easy modification. The interfaces between the distributed objects are specified in (Object Management Group) OMGs Interface Definition Language.

• Journal of the Korea Society of Computer and Information
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• v.29 no.2
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• pp.127-136
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• 2024

This paper presents a novel method for minting hierarchical Non-Fungible Tokens(NFTs) via a parent-child structure. In contrast to existing NFT structures, our proposed model enables an NFT to act as a parent, creating child NFTs and distributing ownership stakes among them. These child NFTs are recursively structured, allowing them to generate their own descendants. The existing structure of NFTs does not inherently allow for fractional ownership. However, our proposed hierarchical model provides a feasible solution to this restriction. By dividing an NFT into multiple child NFTs, each with its own unique identity, we facilitate the detailed division of an asset, thereby making fractional ownership possible. In conclusion, the hierarchical NFT model proposed in this paper offers a promising solution to the challenges of fractional ownership in the digital asset arena. By enabling the detailed division of NFTs through a parent-child structure, we anticipate a future where digital assets can be owned and traded more flexibly and transparently.

• 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.

• Proceedings of The Korean Society of Health Promotion Conference
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• 2009.05a
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• pp.77-77
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• 2009

한국건강관리협회는 1998년부터 국민건강증진기금의 지원으로 금연사업을 수행하고 있다. 본 연구에서는 협회에서 실시한 '07년 민간단체 금연클리닉 사업을 대상으로 사업의 효과성을 분석하여 사업의 과학적 근거 확보 및 향후 효과적인 사업 수행방안 마련 등 사업의 발전방안을 모색하고자 실시되었다. 대상은 2007년 민간단체 금연클리닉에 참여한 군 경, 중소업체 종사자, 운송업체 종사자, 국방부지정부대 참여자, 학교/공공기관 종사자 중 설문조사에 성실하게 응답한 3,170명이다. 민간단체 금연클리닉 사업 효과성 평가 설계는 구조화된 평가도구를 활용하여 금연클리닉에 참여한 집단만을 대상으로 참여 전(사전조사)과 금연클리닉 종료 후(사후조사)의 조사결과를 비교하는 단일 전후조사 설계(one-group pretest posttest design)방법을 사용하였다. 연구결과 민간단체 금연클리닉 참여자의 하루 평균 흡연량은 15.96개비, 평균 흡연시작연령은 18.59세, 평균 총 흡연기간은 146.39개월로 나타났으며, 참여자의 니코틴 의존도는 평균 3.81점으로 조사되었다. 또한 참여자의 84.5%가 의지로 금연 시도하였으나 실패한 것으로 나타나 이에 대한 개입이 필요함을 알 수 있다. 참여자들의 상황별 흡연욕구는 높은 수준이었으며, 특히 술자리, 스트레스상황 등 특정 상황에서 흡연욕구가 높게 나타났다. 금연관련 경험요인은 5점 기준 2.84점으로 조사되었으며, 인지적 과정이 행동적 과정에 비해 높게 나타났다. 마지막으로 민간단체 금연클리닉의 전반적인 만족도는 높았으나 상담환경에 대한 만족도가 상대적으로 낮았음을 감안할 때, 환경적인 부분에 대한 개선이 필요할 것으로 보인다. 더불어 금연클리닉의 효과나 만족도 부분에서 대상자의 특성에 따른 차이가 발생하므로 참여 대상자의 특성을 감안한 맞춤형 프로그램 개발이 필요할 것이다.

• Journal of Korea Multimedia Society
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• v.14 no.7
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• pp.858-865
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• 2011

In order to allow the user to efficiently browse, select, and retrieve a desired video part without having to deal directly with GBytes of compressed data, classification of shot motion characteristic has to be carried out as a preparation for such user interaction. The organization of video information for video database requires segmentation of a video into its constituent shots and their subsequent characterization in terms of content and camera movement in shot. In order to classify shot motion, it is a conventional way to use element of motion vector. However, there is a limit to estimate global camera motion because the way that uses motion vectors only represents local movement. For shot classification in terms of motion information, we propose a new scheme consisting of partial decoding of INTRA pictures and comparing the x, y displacement vector curve between the decoded I-frame and next P-frame in compressed video data.

• Journal of the Korea Convergence Society
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• v.9 no.6
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• pp.321-327
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• 2018

The study aims to investigate university students' perception of syllabus and their satisfaction of its components. A survey was conducted of the whole student body in a university located in Daejeaon city. 996 students answered the questionnaire. The findings of the study are as follows: Females or upper grade students showed a more positive response to the syllabus than males or lower grade students. The group who positively perceived satisfaction of the syllabus showed less satisfaction of the syllabus components. The subjects evaluated the details or directions of the categories of Exams, Assignment, and Instructors' information were insufficient or incorrect. The pedagogical implications and suggestions for syllabus are also discussed.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.13 no.5
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• pp.2148-2155
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• 2012

The purpose of this study was to investigate the relationship of depression and life-stress by values in Korean university students. Data were collected by structured questionnaires form 212 students by convenient sampling methods from August to November 2011. The type of values were classified into: personal oriented values, 64.6%; social oriented values, 35.4%. There were no significant differences in depression by values. But there were significant differences in frequency of experiences and importance of life-stress by values. Also, there were significant differences for correlation between depression and life-stress by values. These results suggest that for the university student, the nursing strategies should be developed in order to improve ability to reduce life-stress and depression considering such differences by values. Especially, it is necessary to attention in management of stress and depression for students with personal oriented values.

• 한국노년학
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• v.29 no.1
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• pp.353-368
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• 2009

The purpose of this study was to investigate the relationship among ALD/IADL, social activity participation, elder abuse and the depression of the older-elderly. It was focused on the mediating effect of social activity participation and elder abuse between ADL/IADL and depression. For these purposes, 603 older-elderly in Chonbuk province were interviewed using structured questionaire. Major finding of this study are as follow : First, the depression level of the older-elderly was very high. Second, ADL/IADL influences the depression directly and indirectly. Third, social activity participation has the mediating effect between ADL/IADL and the depression. Fourth, elder abuse has the mediating effect between ADL/IADL and the depression. Result indicate that lower ADL/IADL, social activities and elder abuse related negatively to depression. On the basis of these results, implications for policy and practice are suggested for prevention the depression of the older-elderly.