• 제목/요약/키워드: three-dimensions

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3D 스캐너와 역설계를 활용한 자동차용 허브의 프린팅 특성 (3D Printing Characteristics of Automotive Hub using 3D Scanner and Reverse Engineering)

  • 김해지
    • 한국기계가공학회지
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    • 제18권10호
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    • pp.104-109
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    • 2019
  • Reverse engineering techniques using 3D scanners and 3D printing technologies are being used in various industries. In this paper, the three-dimensional model is designed for automotive hub parts through 3D scanning and reverse engineering, and the design of hub parts is intended to be printed on FDM-style 3D printers to measure and analyze the dimensions of hub parts designed for reverse design and 3D printed hub parts. Experimental result have shown that the dimensions of 3D printed hub parts are small compared to those of the reverse-engineered dimensions, which are due to the shrinkage of filament materials in 3D printing.

전기자동차 파우치 배터리 치수검사 시스템 (Electric vehicle Pouch battery dimension inspection system)

  • 이형석;김재희
    • 한국멀티미디어학회논문지
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    • 제24권9호
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    • pp.1203-1210
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    • 2021
  • In this paper, we developed the inspection system of electric vehicle pouch battery using image processing. Line scan cameras are used for acquiring the all parts of the pouch battery, and several steps of image processing for extracting significant dimensions(User Required Position) of the battery. In image processing, edge lines, node points, dimension lines, etc. were extracted using Preprocessor, Square Edge Detection, and Size Detection algorithms. This is used to measure the dimensions of the location requested by the user on the pouch battery. For verification of the inspection system, the dimensions of three pouch batteries produced in the same process were measured, and the mean and standard deviation were obtained to confirm the precision.

Intellectual Capital and Its Role in Crisis Management During the COVID-19 Pandemic: An Empirical Study in Kuwait

  • ALNASSAFI, Fahd Marzouq
    • The Journal of Asian Finance, Economics and Business
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    • 제9권3호
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    • pp.113-121
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    • 2022
  • The study aimed to assess the availability of intellectual capital in Kuwaiti private universities in terms of its three dimensions (human capital, structural capital, and relational capital), as well as its role in crisis management (crisis preparedness, crisis mitigation, confrontation, and response to the crisis, and learning from the crisis) during the COVID-19 pandemic. Members of the boards of trustees, university presidents, their deputies, and deans of the colleges were chosen as respondents to this study from a sample of (8) private universities in Kuwait, with the sampling unit consisting of leaders in these universities. The study revealed that all dimensions of intellectual capital play a statistically significant impact in executing crisis management during the COVID-19 pandemic at Kuwaiti private universities after conducting the data analysis process. The study concluded that universities should pay attention to intellectual capital in all its dimensions (human capital, structural capital, and relational capital) because of its role in improving their ability to implement crisis management strategies and strive to improve their capabilities to face crises by implementing crisis management strategies.

Managing Mega-Project Complexity in Five Dimensions

  • Gransberg, Douglas D.;Jeong, H. David
    • 국제학술발표논문집
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    • The 6th International Conference on Construction Engineering and Project Management
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    • pp.6-9
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    • 2015
  • Traditional project management theory is based on a three-dimensional life cycle approach where the project managerseeks to optimize the dimensions of cost-schedule-technical (quality or design). This paper reports the findings of a case study analysis of two complex mega-projects in Michigan which confirm the findings of previous research and illustrates the use of a framework for five-dimensional project management (5DPM) that is for conceptualizing a complex project's scope of work. The framework elevates the recognition that the project's social/political context and the financial arrangements create complexity adding two new dimensions. This paper also demonstrates a methodology to graphically display a project's complexity to better understand and prioritize the available resources. The result is a "complexity footprint" that may help a complex project manager identify the boundary between controllable and uncontrollable projects impacts. The paper finds that applying 5DPM to the two case study projects has given the project delivery team a tool which is actually adding value to the complex project management process.

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Three-dimensional assessment of the temporomandibular joint and mandibular dimensions after early correction of the maxillary arch form in patients with Class II division 1 or division 2 malocclusion

  • Coskuner, Hande Gorucu;Ciger, Semra
    • 대한치과교정학회지
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    • 제45권3호
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    • pp.121-129
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    • 2015
  • Objective: This study aimed to assess three-dimensional changes in the temporomandibular joint positions and mandibular dimensions after correction of dental factors restricting mandibular growth in patients with Class II division 1 or division 2 malocclusion in the pubertal growth period. Methods: This prospective clinical study included 14 patients each with Class II division 1 (group I) and Class II division 2 (group II) malocclusions. The quad-helix was used for maxillary expansion, while utility arches were used for intrusion (group I) or protrusion and intrusion (group II) of the maxillary incisors. After approximately 2 months of treatment, an adequate maxillary arch width and acceptable maxillary incisor inclination were obtained. The patients were followed for an average of 6 months. Intraoral and extraoral photographs, plaster models, and cone-beam computed tomography (CBCT) images were obtained before and after treatment. Lateral cephalometric and temporomandibular joint measurements were made from the CBCT images. Results: The mandibular dimensions increased in both groups, although mandibular positional changes were also found in group II. There were no differences in the condylar position within the mandibular fossa or the condylar dimensions. The mandibular fossa depth and condylar positions were symmetrical at treatment initiation and completion. Conclusions: Class II malocclusion can be partially corrected by achieving an ideal maxillary arch form, particularly in patients with Class II division 2 malocclusion. Restrictions of the mandible in the transverse or sagittal plane do not affect the temporomandibular joint positions in these patients because of the high adaptability of this joint.

여행 블로그의 서비스 품질과 동기요인이 이용자 만족과 재이용의도에 미치는 영향에 관한 연구 (An Intention using Travel-Blog on Service Quality and Motivation)

  • 이기동;김학희;박천웅
    • 디지털융복합연구
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    • 제6권4호
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    • pp.45-52
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    • 2008
  • The purpose of this study was to verify and analyze the factors that influence the intention using the travel-blog. This study sought to find out the motivation factors of a Blog. Also, This paper tests the updated model of information systems success proposed by Delone and McLean using a field study of a travel-blog. The three dimensions of the blog Quality were information, design and system. And The three dimensions of the motivation factors were pride, enjoyment and ease of use. Questionaries are collected from 196 peoples who are using the travel-blog. The results of study show, first, that information quality, pride and enjoyment are significant predictors of user satisfaction, second, that pride, enjoyment, and satisfaction are significant of reuse intention with the travel-blog. Third, ease of use did not have positive effects on reuse intention to travel-blog.

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융합 교과목 개발방법에 관한 연구 - 기계공학과 인간운동과학의 융합 - (A Study on the Design of Fusion Education Program - Fusion of ME and Kinesiology -)

  • 이건상
    • 공학교육연구
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    • 제21권1호
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    • pp.66-76
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    • 2018
  • In order to facilitate the process of designing a fusion curriculum, this study used the learning outcomes presented in KEC2015 to design a fusion goal dimension. The three dimensions of fusion education in the fusion curriculum framework are fusion goals, fusion approach and fusion context. As a result of examining the curriculum learning activities in order to confirm that the developed curriculum meets these three dimensions, it can be confirmed that it contributes relatively evenly to the fusion goal, fusion approach and fusion context dimension. In addition, it provides a procedure to develop the fusion curriculum through the concrete procedures and examples from the design to implementation of the developed fusion curriculum, and to confirm the result of the fusion dimension.

공동주택 소음에 대한 감성 평가 (IDENTIFYING EMOTIONAL ELEMENTS OF APARTMENT NOISE)

  • 민윤기;은희준;조문재;손진훈
    • 한국감성과학회:학술대회논문집
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    • 한국감성과학회 1999년도 춘계학술발표논문집 논문집
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    • pp.39-44
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    • 1999
  • The purpose of this study was to extract emotional dimensions from Korean adjectives relating to apartment noise. Noise-related 296 Korean adjectives were extracted from a dictionary and three evaluators selected 96 adjectives from those by removing very similar ones in meaning. Two types of 96 7-point scales were conducted to college students for evaluation, whether each adjective describes apartment noise appropriately. From this evaluation, 28 adjectives having above 4.5 points were selected. Again, 8 different types of 7-point scales on 378 adjective pairs(28 x 27/2) were administrated to separate college students to evaluate the degree of similarity between 28 adjectives. Based upon this evaluation, 14 adjectives were finally selected and scores on similarity sere analyzed through two different statistical analyses (Multi-dimensional scale and Cluster analysis). The results showed that three dimensions (displeasure, sensitivity and perceived loudness) exist in peoples' emotional response state to apartment noise. The previous studies have treated annoyance and sensitivity as separate measures to noise. However, this study showed that these two factors were on the same emotional dimension labeled as 'sensitivity' In addition, new dimension, labeled as 'displeasure', was found.

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휴가목적지 선택과정에서의 선택기준의 중요성 (The importance of choice criteria in vacation destination decisions)

  • 김성진;안건용
    • 한국조경학회지
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    • 제25권3호
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    • pp.47-55
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    • 1997
  • A vacation destination was conceptualized to be chosen through a three-stage process consisting of an early consideration set formation, a late consideration set formation, and a final selection stage. Choice criteria were defined as an individual's belief toward the relationships between perceived attributes, expected outcomes, and the destination. And these criteria were assumed to be divided into benefit-related dimension and perceived risk-related dimension. Through two pilot surveys, 13 items which have 4 factors were identified. used on 4 factor structures, the benefit-related dimension was identified to be consisted of three sub-dimensions, "historic/cultural", "escaped" and "naturalness". A longitudinal panel survey was used to test the differences of the importance of choice dimensions through the choice process. The importance of benefit-related dimension was decreased through the choice process as hypothesized except "naturalness" factor. And as hypothesized, the importance of perceived risk-related dimension was increased.

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지역대학 대학생의 자아존중감이 대학생활 적응에 미치는 영향 - 사회적 지지의 조절효과 - (Self-Esteem Influencing College Students' Adjustment - Moderating Effects on Social Support -)

  • 임광명;박덕병
    • 농촌지도와개발
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    • 제27권3호
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    • pp.145-158
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    • 2020
  • Self-esteem and social supports are important variable influencing adjustment to college life. The study aims to identify the factors influencing college students' adjustment moderating effects on social supports. Data were collected from 265 usable questionnaires among college students in Pyeongtek University. Results of a factor analysis yielded three dimensions of self-esteem which were talent/attitude and capacity/pride. And results of factor analysis also yielded three dimensions of social supports which were family, friends, and professor supports. Hierarchical regression analysis revealed that capacity/pride and all of social support factors affected significantly for adjustment to college life. And female and attitude for students' major had a positive affect on adjustment to college life. It was suggested that self-esteem, social supports, and aptitude for students' major should be considered in college management policy.