• 대한치과재료학회지
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• 제44권4호
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• pp.329-336
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• 2017

본 연구는 맞춤형 지대주 (custom abutment) 설계 시 CAD 프로그램 내에서 선택된 수렴 각 그리고 곡률 반경 값 사용에 따른 가공 정확도를 평가하고자 한다. 치과용 CAD를 기반으로 10개의 맞춤형 지대주를 설계하였다. 제작된 맞춤형 지대주를 정밀 접촉식 스캐너를 이용하여 한 개의 시편을 10회 반복 스캔하였다. 스캔 된 맞춤형 지대주의 데이터는 "Test STL" 파일로 지정하여 저장하였다. Geomagic studio 소프트웨어를 이용하여 각 "Test STL" 파일과 동명 번호로 지정하여 저장된 CAD-reference-model STL 파일 (CRM)과 중첩하였다. 실험 결과에서 A8 군(수렴 각 $8^{\circ}$) 군은 A4 군(수렴 각 $4^{\circ}$) 보다 낮은 오차 수치를 나타났다. 또한, 곡률 반경 값이 높을 수록 맞춤형 지대주의 Top 그리고 chamfer 부위에 오차가 적게 나타냈다(p< 0.05). 전체적으로, 맞춤형 지대주 설계 시 곡률 반경 값은 가공 정확도에 영향을 미치는 것을 알 수 있었다.

• 복식문화연구
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• 제20권5호
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• pp.782-798
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• 2012

The research aim is to analyze the attributes of fashion as an object of art, and to examine its potential and status as an art of body space. This paper explains the relationship between these two disciplines by focusing on the body as the foundation of fashion and art's concepts, and discusses the intrinsic properties and the approach to the creation of fashion which is expressed through the body. The research begins by analyzing the sociologists thoughts on the body and extracts the characteristics of fashion as a practice of a new art field from the perspective of body creating space. It explains that fashion can most easily transform the body and that this, along with the body itself, possesses the element of creating body space. Fashion is a new avenue for understanding the body that not only includes the human figure but also its movement and spirit approached as a creative activity. The paper will show that fashion chosen as an art activity expresses the changeable and ambiguous body and embraces an unlimited potential of creative activity. This expands the creative field by managing both the inner and outer space of the body. Historical examination, literature review and overview of development of reference materials will establish the theory.

• 한국조경학회지
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• 제35권2호통권121호
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• pp.37-48
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• 2007

An exhibit entitled 'Revelatory Landscapes' was held at the San Francisco Museum of Modem Art from May 5 to October 14, 2001. For this Museum's rot off-site outdoor exhibition, five outstanding design teams-Kathryn Gustafson, Hargreaves Associates, Hood Design, Tom Leader Studio, and ADOBE LA-created site-specific installations in Berkeley, Oakland, San Jose, and the San Francisco Bay Area. Each project showcased a hybridization of environmental art and landscape design. The main content revealed through revelatory landscapes were the natural, cultural, and historical palimpsest of the sites-particularly as related to the history of minorities such as Native American, African Americans and Latin Americans-as well as the every day life of ordinary people. To represent these ideas, a juxtaposition of the past and the present was broadly applied. Furthermore, the use of dramatic colors, textures, and forms in consideration of materials coupled with the revelation of natural elements such as wind and sunlight accelerated the effect of this juxtaposition. Every project of the Revelatory Landscapes exhibit requires a phenomenological experience to be appreciated. Via the five senses, these experiences cause a synesthetic experience beyond solely the visual. By examining the projects of 'Revelatory landscapes', the threshold for a new blending between environmental art and landscape design as well as new landscape design strategies that overcome the dichotomy between nature and culture will change and evolve.

• 한국전기전자재료학회:학술대회논문집
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• 한국전기전자재료학회 2008년도 춘계학술대회 논문집 센서 박막재료연구회 및 광주 전남지부
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• pp.27-31
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• 2008

In this study, The new type of loop antenna which detects the partial discharge was designed based on microstrip line technology. In diagnosis of power cable, partial discharge signal generally occurred at the frequency range lower than 100MHz because high frequency PD signals could be lost along the propagation path in the cable. The new type of loop antenna sensor has been studied by using Simulation software named CST microwave studio version 5.0. In partial discharge measuring experiments, commercial HFCT sensor was used as a reference sensor. Several experiments were made over HFCT sensor and loop antenna sensor in detection partial discharge on MV XLPE cable of 22.9kV. In this study, we have shown our loop antenna sensor can apply as a commercial HFCT sensor.

• Journal of Korean Dental Science
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• 제13권1호
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• pp.28-34
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• 2020

Purpose: The purpose of this study was to investigate the influence of different implant computer software on the accuracy of image registration between radiographic and optical scan data. Materials and Methods: Cone-beam computed tomography and optical scan data of a partially edentulous jaw were collected and transferred to three different computer softwares: Blue Sky Plan (Blue Sky Bio), Implant Studio (3M Shape), and Geomagic DesignX (3D systems). In each software, the two image sets were aligned using a point-based automatic image registration algorithm. Image matching error was evaluated by measuring the linear discrepancies between the two images at the anterior and posterior area in the direction of the x-, y-, and z-axes. Kruskal-Wallis test and a post hoc Mann-Whitney U-test with Bonferroni correction were used for statistical analyses. The significance level was set at 0.05. Result: Overall discrepancy values ranged from 0.08 to 0.30 ㎛. The image registration accuracy among the software was significantly different in the x- and z-axes (P=0.009 and <0.001, respectively), but not different in the y-axis (P=0.064). Conclusion: The image registration accuracy performed by a point-based automatic image matching could be different depending on the computer software used.

• Restorative Dentistry and Endodontics
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• 제43권1호
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• pp.10.1-10.8
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• 2018

Objectives: To examine the surface topography of intact WaveOne (WO; Dentsply Sirona Endodontics) and WaveOne Gold (WOG; Dentsply Sirona Endodontics) nickel-titanium rotary files and to evaluate the presence of alterations to the surface topography after root canal preparations of severely curved root canals in molar teeth. Materials and Methods: Forty-eight severely curved canals of extracted molar teeth were divided into 2 groups (n = 24/each group). In group 1, the canals were prepared using WO and in group 2, the canals were prepared using WOG files. After the preparation of 3 root canals, instruments were subjected to atomic force microscopy analysis. Average roughness and root mean square values were chosen to investigate the surface features of endodontic files. The data was analyzed using one-way analysis of variance and post hoc Tamhane's tests at 5% significant level. Results: The surface roughness values of WO and WOG files significantly changed after use in root canals (p < 0.05). The used WOG files exhibited higher surface roughness change when compared with the used WO files (p < 0.05). Conclusions: Using WO and WOG Primary files in 3 root canals affected the surface topography of the files. After being used in root canals, the WOG files showed a higher level of surface porosity value than the WO files.

• 농촌계획
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• 제6권2호
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• pp.59-72
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• 2000

This study examines the rural village planning in North Korea after the Liberation of Korea in 1945. For conducting this study, the creation of rural villages in North Korea were investigated according to the following periods: from the Liberation of Korea to the outbreak of the Korean War, from the end of the Korean War to the 1950's, 1960's, 1970's and 1980's. In this study, major rural villages were also examined and common characteristics of rural village-making in North Korea were analyzed. The following are the findings from this study. In rural village planning, historic revolutionary sites and buildings, where revolutionary achievements of Kim, Ill-Sung and Kim, Jung-Ill were reached, are well preserved and actively created. (2) Rural villages are intended to be a place for ideological education, productive activities and cultural refreshment. (2) In rural village-making, inclined planes are utilized, in consideration of climatic and topographic conditions. (4) The construction of residential areas with modern private houses is considered to be important in the making of socialistic and communist rural communities in North Korea. (5) For economic reasons, existing villages, buildings and facilities are preserved and local building materials are broadly used.

• 대한후두음성언어의학회지
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• 제16권2호
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• pp.152-157
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• 2005

Background and Objectives : 10 normal Korean native speakers participated subjects to investigate the acoustic and aerodynamic study of Korean fricatives, affricates, and plosives and to make good use of the results for the patients with articulation problems. Materials and Method Their productions of [asa], [as'a], [aca], $[ac^ha]$, (ac'a), (ata) , $[at^ha]$, and [at'a] were analyzed with Lx Speech Studio Program (Laryngogrtaph Ltd, UK) for acoustic analysis and Phonatory Function Analyze. (Nagashima Ltd. Model PS 77H, Tokyo, Japan) for aerodynamic analysis. Results : The results are as follows : 1) Plosives showed higher Qx1 in vocal folds closure ratio than fricatives and affricates. 2) Tense fricatives, affricates, and plosives showed higher Qx2 in vocal folds closure ratio than asperated and 1ax. 3) Asperated showed higher Qx1 in vocal folds closure ratio than tense and 1ax. 4) Asperated showed higer peak flow rate than tense and 1ax. Conclusion This results may be helpful for treatment in articulation disorders.

• 한국실내디자인학회논문집
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• 제16권3호
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• pp.3-9
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• 2007

Taliesin West is a meaningful historic site in architecture field, because its place had still been existing only one in the world as a ideal architectural community for working and living as well as learning by doing for Taliesin Fellowships and others based on F. L. Wright's idea of Organic Architecture. The main purpose of this study was to follow up the architectural thought and its construction shown in F. L. Wright's 'Taliesin West'. A study on the key notes are as follows; 1) The key-clue of the construction background for Taliesin West was based on the project of 'Complex Campus Building' which was early planed by F. L. Wright. 2) A basic design idea for Taliesin West was admiring from its own site characters as well as the Experimental construction methods and materials. 3) Design motive of Taliesin West was based on American Indian's movable shelter which called 'Tepee.' 4) A construction of F. L. Wright's temporary studio, Ocotilla, was a good opportunity to construct for Taliesin West which construction methods, covered and framed, were same as Ocotilla. 5) A concept idea of the master plan for Taliesin West came from combining Taliesin's Hillside Home School and Complex Campus Building project. 6) Construction of Taliesin West was a final accomplished place as F. L. Wright's utopia architecture and community.

• 대한치과보철학회지
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• 제59권3호
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• pp.299-304
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• 2021

목적: 본 연구의 목적은 컴퓨터 단층촬영과 광학스캔 영상의 정합에서 술자의 경험이 정합의 정확성과 소요시간에 미치는 영향을 조사하는 것이다. 재료 및 방법: 치아결손이 없은 성인 악궁의 컴퓨터 단층촬영과 광학스캔 영상(IDC S1, Amann Girrbach, Koblah, Austria)이 수집되었다. 두 영상간의 영상정합이 임플란트 진단 소프트웨어(Implant Studio, 3Shape, Copenhagen, Denmark)에서 점 기반 자동매칭 방식으로 행해졌다. 영상정합 경험자 군과 미경험자 군으로 나누어 진행되었으며 작업시간이 기록되었다(군당 15명). 각 군의 영상 정합 정확성은 구치부에서의 선형 오차값으로 측정되었다. 정확성 값과 작성시간의 통계적 비교 분석을 위해 유의수준 0.05에서 독립표본 t검정이 이용되었다. 결과: 영상정합의 선형오차값은 경험자 군과 미경험자 군 간에 통계적인 차이가 없었다. 영상정합에 소요한 시간은 경험자 군이 미경험자 군에 비해 유의하게 짧았다(P = .007). 결론: 술자의 영상정합의 경험의 차이는 점 기반 자동정합이 사용된 경우 정합 정확성에 유의한 영향을 미치지 않는 것으로 보인다. 경험자에서 정합에 소요된 시간은 짧았다.