• 한국CDE학회논문집
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• 제12권2호
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• pp.95-100
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• 2007

Virtual Reality(VR) data in VR environments like Manufacturing industries are often created jointly by many creators. It is then necessary to provide protection of the joint-creatorship and the creatorship of each participating creator. This paper proposes Multiple Digital Watermarking Framework(MDWF) to solve the problem of joint-creatorship. The proposed framework, MDWF, makes use of 3D private watermarking technology and a novel key sharing protocol for joint-creatorship verification. MDWF embeds 3D private multiple watermarks for the creatorship of each participating creators in a non-overlapping manner during the creation process. After key agreement of all private keys, MDWF embeds an additional 3D private watermark for the joint-creatorship. Therefore MDWF successfully handles the creatorship dispute among creators. That is, each participation creator can prove his/her partial creatorship as well as joint-creatorship by MDWF. In addition, MDWF can solve the collusion problems because shared secret key(SSK) can be made by every users.

• 한국CDE학회논문집
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• 제13권2호
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• pp.109-120
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• 2008

ISO 10303-112 is an integrated application resource of ISO 10303, commonly known as STEP, and specifies the procedural_sketch schema. The ISO 10303-112 provides general resources for the representation of modeling commands for the exchange of procedurally represented 2D CAD models. Procedural models have the advantage of being easy to edit, simply by changing values of parameters of their constructional operations. Such models are said to embody design intent, in the sense that modifications to them conform to the method of creation used by their original creator, and they also comply with any constraints implied by the particular constructional operations used. This paper introduces the development and standardization process of the ISO 10303-112, and describes the concept of procedural 2D CAD modeling, the way to represent the procedural 2D CAD models in STEP and the harmonization with other STEP resources.

• 산업융합연구
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• 제20권2호
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• pp.29-36
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• 2022

디지털 사회를 위한 AI와 빅데이터 시대의 컴퓨팅 사고는 컴퓨터가 실행할 수 있는 방식으로 우리가 해결하고자 하는 문제와 솔루션을 표현하는 일련의 문제해결 방법을 의미한다. 컴퓨팅 사고는 컴퓨터 과학의 기본 개념을 도출함으로써 문제를 해결하고 시스템을 설계하고 인간의 행동을 이해하는 것으로, 학생들에게는 어려운 문제와 애매한 퍼즐을 맞추는 접근법이다. 본 논문에서 우리는 컴퓨팅 사고를 댄스 동작과 융합하여 학생들이 문제를 해결할 수 있는 수업 모델을 개발하였다. 개발된 수업 모델을 가지고 ◯◯대학교 1학년 예비교원 93명을 대상으로 1학기 동안 수업한 결과, 수업 참가자들은 비디오 수준의 만족스러운 알고리즘을 만들어 냈다. 또한, 제안된 모델이 수업 참여 학생들의 컴퓨팅 사고 이해에 크게 기여함을 알 수 있었다.

• 문화기술의 융합
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• 제4권3호
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• pp.75-86
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• 2018

데스크톱 다큐멘터리는 카메라로 촬영하는 대신 인터넷 오픈 아카이브에서 검색하고 선택한 멀티미디어 콘텐츠를 재료로 컴퓨터 인터페이스 상에서 그것을 재조합하는 창작자의 멀티태스킹 과정 자체를 스크린 캡쳐 기술을 사용해 녹화하여 완성하는 새로운 다큐멘터리 양식이다. 본 논문에서는 뉴 미디어 환경에서 잠재적 아카이브를 데이터 베이스 내러티브로 전환하고, 영화적 미장센을 컴퓨터 미장인터페이스로 바꾸며, 의식의 흐름을 통한 큐레이션으로서의 창작 메커니즘을 통해 창작과 비평의 경계를 오가는 메타-시네마이자 뉴 미디어 아트의 실험적 시도로서, 주류 호러 영화의 새로운 혼성 장르적 시도로서, 극영화 창작의 새로운 방식으로서, 새로운 모큐멘터리적 시도로서, 그리고 창작과 비평의 경계를 오가는 비디오 에세이와 비평 영화의 새로운 양식으로서 2010년대를 기점으로 부상하고 있는 데스크톱 다큐멘터리의 개념과 유형 및 특성을 연구한다.

• Advances in Computational Design
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• 제2권4호
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• pp.293-311
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• 2017

There are several claimed benefits for the impact of design patterns (DPs) on software quality. However, the association between design patterns and fault-proneness has been a controversial issue. In this work, we evaluate the fault-proneness of design patterns at four levels: the design level, category level, pattern level, and role level. We used five subject systems in our empirical study. As a result, we found that, at the design level, the classes that participate in the design patterns are less fault-prone than the non-participant classes. At the category level, we found that the classes that participate in the behavioral and structural categories are less fault-prone than the non-participant classes. In addition, we found that the classes that participate in the structural design patterns are less fault-prone than the classes that participate in the other categories. At the pattern level, we found that only five patterns show significant associations with fault-proneness: builder, factory method, adapter, composite, and decorator. All of these patterns except for builder show that the classes that participate in each one of them are less fault-prone than the non-participant classes in that pattern. The classes that participate in the builder design pattern were more fault-prone than the non-participant classes and the classes that participate in several patterns: the adapter, the composite, and the decorator design patterns. At the role level, the most significant differences were between the classes that participate in some roles and the non-participant classes. Only three pairs of design pattern roles show significant differences. These roles are concrete-product vs. concrete-creator, adapter vs. adaptee, and adapter vs. client. The results recommend the use of design patterns because they are less fault-prone in general except for the builder design pattern, which should be applied with care and addressed with more test cases.