• 응용통계연구
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• 제37권3호
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• pp.311-322
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• 2024

본 연구에서는, 추천시스템 연구에 자주 활용되는 무비렌즈 데이터에 대한 탐색적 분석을 통하여 무비렌즈 데이터의 자세한 특성을 살펴보고, 추천시스템에서 심층신경망을 이용한 협업필터링 (NCF) 방법으로 잘 알려진 신경망행렬분해법을 개선하기 위한 대안을 모색한다. 본 연구에서, 제안한 일반화 NCF (G-NCF) 방법은 기존의 NCF 방법에 비하여 주요 평가 지표에서 평균적으로 우수한 특성을 보이지만, 평가지표의 산포가 다소 커지는 단점도 함께 가진다. 성능 비교를 위한 평가 지표로 MAP와 nDCG 등을 이용하였다.

• Industrial Engineering and Management Systems
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• 제8권2호
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• pp.109-120
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• 2009

As the use of 3DCAD data became widespread in designing products in manufacturing, attempts have been made to shorten lead time and reduce cost of production preparation utilizing 3DCAD data for launching assembly lines. In order to create assembly plans not only efficient but easy for operators to operate ('easy-to-operate'), this study presents approaches, methods, and systems for creating 3DCGAs (3 Dimensional Computer Graphic Animations) which automatically utilize a prototype-free production preparation methodology. Characteristics of this study include that it proposes the methodology for creating assembly operation 3DCGAs automatically, for all the possible assembly operations corresponding each of the possible assembly sequences first. Using the created 3DCGAs, the study next considers assembly methods by evaluating how easy or 'operator friendly' they are in implementing, and devises tools or jigs to be used, and plans efficient assembly line organization. The concept of the methodology was formed by focusing on the value-adding assembly steps at which parts turn into products directly. The study also validates the effectiveness of the presented methodology by employing the methods used in actual production preparation process in businesses, and proves that an efficient assembly line can be organized in a shorter period of time utilizing the developed system and by preparing easy-to-operate and efficient plans in 3DCGAs at the design stage.

• 한국진공학회지
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• 제5권3호
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• pp.181-187
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• 1996

The Ultrasonic Interferometer Manometer(UIM) which can calibrae from1 Pa to $10^5$Pa has been developed, and its uncertainty is evaluated less than $\pm$(30ppm of pressure+12mPa). We can calibrate Capacitance Diaphragm Gauge(DCG) used as a transfer standard gauge in the low vacuum field. TheUIM enables to maintain the measurement traceability for industries. In order to improve the UIM's accracy, we will perform the international intercomparison withother national standards laboratories.

• 정보관리학회지
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• 제9권2호
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• pp.43-79
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• 1992

자연 언어 처리 문법 중 격문법, 개념 의존 문법, PATR-II, DCG를 응용하여 미생 물학 분야에 대한 한국어 자동 초록 시스템의 구축을 연구하였다. 표본으로 선택된 초록들 을 분석하여 초록의 구조가 연구 목적 문장, 방법.결과 문장, 결론 문장 의 순으로 이루어지 는 것을 알았고 이를 초록의 이상적인 구조 형식으로 정하였다. 본문에서는 문장 발췌와 발 췌된 문장들이 초록의 문장으로 정제되도록 하는 과정에서 중요한 역할을 하는 명사 역할 자질과 그 자질을 부여하는 규칙을 개발 하였다. 그리고 발췌된 문장들을 재정렬시키기 위 한 재정렬 규칙, 초록 문장을 생성하기 위한 문장 생성 규칙을 두었다. 그리고 본 시스템의 방법론으로 작성된 자동 초록들을 평가한 결과, 본 시스템의 방법론이 저자 초록과 같은 수 준에 오르려면 정밀한 역할 자질의 확립과 문장 생성 규칙에 대한 보다 깊은 연구가 필요하 다고 사려된다.

• Journal of Computational Design and Engineering
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• 제2권1호
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• pp.47-54
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• 2015

In recent years, 3D printers have become popular as a means of outputting geometries designed on CAD or 3D graphics systems. However, the complex user interfaces of standard 3D software can make it difficult for ordinary consumers to design their own objects. Furthermore, models designed on 3D graphics software often have geometrical problems that make them impossible to output on a 3D printer. We propose a novel AR (augmented reality) 3D modeling system with an air-spray like interface. We also propose a new data structure (octet voxel) for representing designed models in such a way that the model is guaranteed to be a complete solid. The target shape is based on a regular polyhedron, and the octet voxel representation is suitable for designing geometrical objects having the same symmetries as the base regular polyhedron. Finally, we conducted a user test and confirmed that users can intuitively design their own ornaments in a short time with a simple user interface.

• 한국정보통신학회:학술대회논문집
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• 한국정보통신학회 2014년도 춘계학술대회
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• pp.358-362
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• 2014

이안식 일체형 입체카메라는 줌인 시 고정된 컨버전스 포인트로 인해 촬영된 영상 시청할 때 어지러움을 유발하는 시각적 불편이 발생할 수 있다. 본 논문에서는 이안식 일체형 입체카메라에서 줌인 시 발생되는 시각적 불편과 거리감의 변동을 방지하기 위해 3DCG환경에서 컨버전스 포인트 이동값에 대한 실험을 한다. 거리별 컨버전스 포인트 이동에 따른 입체영상을 시청하고 평가하는 주관 평가를 실시하여 시각적 불편을 최소화하는 컨버전스 포인트 조정기법을 제안할 수 있는 근거를 마련하고자 한다.

• Asian Journal of Business Environment
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• 제7권3호
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• pp.5-15
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• 2017

Purpose - The objective of the present study is to examine the relationship between intellectual preferences of individuals and the level of readiness for change according to Ned Herman. Research design, data and methodology - For this, Iranian Supreme Audit Court was selected as a case study in this research and it was carried out to evaluate research variables and test hypotheses using standard questionnaires of intellectual preferences and readiness for change based on the methodology. It should be remarked that only 32 managers of Audit Court were willing to participate in this research and responded to the questionnaires. Results - The outputs of the performed tests showed that although there is not a significant relationship between the individuals with intellectual preferences for class A and readiness for change them, approaching the intellectual preferences of the individuals to D region increases the readiness for change them. On the other hand, whatever individuals have intellectual preferences for branches in groups B and C, the level of preparedness for change is low. Conclusions - The results of this research have made a clear policy for the effective utilization in human resources based on their intellectual preferences model for management with organizational changes.

• 통합자연과학논문집
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• 제15권1호
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• pp.27-36
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• 2022

Metabus, currently represented by Second Life on the Internet, is the next-generation 3DCG Internet world in which the 2D Internet world has evolved, and has grown as a new ICT culture of mankind that can replace real society with virtual society. As such, the reason why the world of metabus has rapidly expanded is that the era of 3D Internet has arrived due to the evolution of the Internet, which only used information, and the spread of 5G communication in user-participating WEB. However, there are many situations in which laws do not exist in this virtual world and various illegal acts occur. As the Internet culture developed earlier, illegal activities by users began to appear, and as the legal responsibility of Internet providers was discussed, mankind quickly passed the Millennium Copyright Act or introduced new copyright protection measures such as technical protection, transmission rights, and rights management information. Therefore, this paper reviews and studies how to accept and further grow this new metabus culture, including the viewpoint of intellectual property.

• 융합경영연구
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• 제3권2호
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• pp.9-20
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• 2015

Could blood type provide a key to wellness and even affect our personality? The theory that blood type is linked to personality (and other mental and physical qualities) is popular mainly in Japan, though it has carried over to Taiwan and South Korea. The present study is the result of a scientific research in which the relationship between two important variables, namely blood group a nd group participation, are determined in the research framework. Based on some collected data from manufacturing firms which are accepted firms in Tehran Stock Exchange, and through cluster sampling a sample was selected. 380 questionnaires were distributed to the personnel of production line, of the firms then the reliability and validity of the questionnaires through independence test and average ratio comparison of the two population were examined, and through Pearson's chi-square formula, the relationship between blood group (independent variable) and group participation (dependent variable) were tested, then through Schuprow coefficient, the prioritization of blood groups over group participation was identified and the following results were obtained: people group participation is affected by their personality features which is derived from their temperament, mood, and characteristics. The study also showed that people blood groups has an effect on their group cooperation, and among blood groups, blood group A has the greatest tendency to group participation and then blood group O, AB, B are prioritized respectively.

• 한국방송∙미디어공학회:학술대회논문집
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• 한국방송공학회 2009년도 IWAIT
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• pp.799-802
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• 2009

We have been studying the next generation of video creation solution based on TVML (TV program Making Language) technology. TVML is a well-known scripting language for computer animation and a TVML Player interprets the script to create video content using real-time 3DCG and synthesized voices. TVML has a long history proposed back in 1996 by NHK, however, the only available Player has been the one made by NHK for years. We have developed a new TVML Player from scratch and named it T2V (Text-To-Vision) Player. Due to the development from scratch, the code is compact, light and fast, and extendable and portable. Moreover, the new T2V Player performs not only a playback of TVML script but also a Text-To-Vision conversion from input written in XML format or just a mere plane text to videos by using 'Text-filter' that can be added as a plug-in of the Player. We plan to make it public as freeware from early 2009 in order to stimulate User-Generated-Content and a various kinds of services running on the Internet and media industry. We think that our T2V Player would be a key technology for upcoming new movement.