• Restorative Dentistry and Endodontics
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• 제44권3호
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• pp.23.1-23.9
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• 2019

Objectives: The aim of this study was to investigate the microshear bond strength (${\mu}SBS$) of different universal adhesive systems applied to hybrid computer-aided design/computer-aided manufacturing (CAD-CAM) restorative materials repaired with a composite resin. Materials and Methods: Four types of CAD-CAM hybrid block materials-Lava Ultimate (LA), Vita Enamic (VE), CeraSmart (CS), and Shofu Block HC (SH)-were used in this study, in combination with the following four adhesive protocols: 1) control: porcelain primer + total etch adhesive (CO), 2) Single Bond Universal (SB), 3) All Bond Universal (AB), and 4) Clearfil Universal Bond (CU). The ${\mu}SBS$ of the composite resin (Clearfil Majesty Esthetic) was measured and the data were analyzed using two-way analysis of variance and the Tukey test, with the level of significance set at p < 0.05. Results: The CAD-CAM block type and block-adhesive combination had significant effects on the bond strength values (p < 0.05). Significant differences were found between the following pairs of groups: VE/CO and VE/AB, CS/CO and CS/AB, VE/CU and CS/CU, and VE/AB and CS/AB (p < 0.05). Conclusions: The ${\mu}SBS$ values were affected by hybrid block type. All tested universal adhesive treatments can be used as an alternative to the control treatment for repair, except the AB system on VE blocks (the VE/AB group). The ${\mu}SBS$ values showed variation across different adhesive treatments on different hybrid CAD-CAM block types.

• 대한치과보철학회지
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• 제57권1호
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• pp.49-56
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• 2019

전반적인 치아의 심각한 마모는 교합 부조화, 심미문제, 턱관절 장애 등을 야기할 수 있으며, 이러한 문제를 해결하기 위해서는 수직 고경에 대한 세심한 평가가 필요하고, 이를 고려한 치료계획을 세워야 한다. 본 증례의 환자는 다수 치아 마모가 있는 58세 남환으로 수직 고경 거상을 동반하여 고정성 보철물로 전악 수복을 하였다. 임시 보철물을 장착하고 4개월 동안 새로운 수직 고경에 대한 환자의 적응도를 평가한 후에 최종 보철물을 장착하였으며, 기능적, 심미적으로 만족할만한 결과를 얻었기에 이를 보고하는 바이다.

• 한국융합학회논문지
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• 제6권3호
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• pp.59-64
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• 2015

경첩은 문을 구성하는 아주 중요한 부품이다. 오늘날 현재 그 기능과 형태, 재료 등의 범주에서 경첩은 더욱 세분화되고 있으며, 또한 그 쓰임새를 확대하고 있다. 이에 따라 보다 진보된 생산기술을 필요로 하게 되고, 더 전문화된 설계를 개발해야 한다. 본 연구에서는 문에 장착된 경첩 모델들에 대하여 구조 해석을 수행하여 문에 일정 힘이 가해질 때 그 변형과 응력분포, 피로수명들을 분석하였다. 본 연구를 통하여 각 형상에 따른 경첩 모델들의 내구성들을 예상할 수 있었으며, 연구 결과를 바탕으로 하여 보다 진보되고, 내구성이 있는 경첩 모델의 설계 및 개발에 기여할 수 있을 것으로 사료된다. 또한, 디자인 면에서 융합 기술로의 접목도 가능하여 미적인 감각을 나타낼 수 있다.

• 한국융합학회논문지
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• 제9권8호
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• pp.179-184
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• 2018

자동차의 구동방식은 전륜구동, 후륜구동, 4륜구동의 방식이 있다. 구동방식에서 운전자가 원하는 방향으로 전환하는 것과 바퀴에 동력을 전달하여 구동하는 두 가지의 역할을 수행하는데 있어 가장 중요한 부품이 등속 조인트이다. 도로상에서 주행 시에는 노면의 상태에 따라서 동력을 전달하는 부품들에 충격이 가해질 수 있다. 본 연구에서는 각각 샤프트의 길이가 다른 3개의 등속 조인트 각 모델들은 CATIA로 모델링하였고 ANSYS를 이용하여 구조 및 피로해석을 수행하였다. 본 연구 결과로는 Model 2가 다른 모델 대비 뛰어난 내구성을 가짐을 알 수 있었다. 이러한 결과를 이용하여 충격에 대한 내구성을 가지는 등속 조인트 설계를 할 때에 유용한 자료가 될 것이라고 사료되며, 등속 조인트의 디자인을 융합기술에 접목하여 미적 감각을 나타낼 수 있다.

• 한국의류학회지
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• 제24권6호
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• pp.838-849
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• 2000

The purpose of this study was to investigate use and purchase behavior of sleeping wear for summer. Subjects in this study were composed of 591 males and females aged from twenties to fifties, living in Taejon and Chongju. For data analysis, descriptive analysis, $\chi$$^2$-test, t-test, ANOVA, and factor analysis were used. The results are as follows. First, subjects used sleeping wear(a night gown and pajamas), and home wear(T-shirts and sweat suit with zippered top) with similar rates. The subjects, who are females, married, older and have professional jobs, owned sleeping wear such as a night gown and pajamas more than home wear. Also, the mean of using pajamas was the highest, and they were satisfied with them more than others who didn't wear them. Second, one-third of consumers purchased sleeping wear once a year in a specialty store. Consumers mainly searched for information regarding sleeping wear in the display section. Most consumers weren't influenced by others when they made their purchases. When consumers decided to purchase a product, they considered six criteria such as fabric/management, wearing/fitness, esthetic, service, symbolic status, and economic for evaluating. Among them, the factor wearing/fitness was considered the most important. These results imply that consumers would be conscious of sleeping wear even though sleeping wear and home wear are used interchangeably. In addition, consumer behavior concerning sleeping wear is different from their characteristics such as sex, age, occupation, the level of education, and marital state. Therefore, the markets with sleeping wear would be able to be segmented based on consumers’characteristics. Also, marketers should focus on distribution channels to reform the markets of sleeping wear, that is, they may offer products in specialty stores. Additionally, market managers would be able to concentrate on visual merchandising in stores in order to increase brand awareness and market share.

• 한국콘텐츠학회논문지
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• 제17권3호
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• pp.609-623
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• 2017

본 연구는 한국과 영국 교복 광고들 속에서 광고의 의미가 어떻게 구성되고 다양한 재현들이 무엇을 의미하는가를 고찰하고, 광고를 둘러싸고 전개된 담론들, 특히 성 담론에 주목하면서 양국의 문화적 함의의 차이를 밝히고자 하였다. 이를 위해 한국의 <스쿨룩스>와 영국의 <아메리칸 어패럴>의 교복 광고들을 분석 대상으로 선정했고 다양한 기호학적 분석 방법들을 활용했다. 기호의 2차 의미 생성 과정 분석, 즉 기표와 기의, 함축 의미와 이데올로기의 단계적 의미들을 도출하고자 하였다. 또한 비판적 담론 분석을 시도하여 광고 텍스트의 의미와 담론적 의미 및 이데올로기적 실천 의미를 파악하였다. 분석 결과, 이들 두 나라의 학생 교복 광고들에는 여성 상품화, 남녀의 권력 불균형, 아동 성애자적 접근 등의 부정적 양태와 교복의 본연의 의미와 가치가 왜곡된 경향이 드러났다. 나아가 교복 광고를 둘러싼 양국의 담론들에 대한 비판적 담론 분석을 토대로 양 국가에서 잠재되어 있는 왜곡된 성적 대상화와 상업화를 통한 비정상적인 미적 가치 변형 양상과 '롤리타 판타지'가 만연되어 있음이 나타났다. 나아가 변태적 성적 취향으로 인해 학생들에게 성적 정체성의 혼란과 가치관의 혼돈을 야기하고 있는 것을 발견하였다.

• 한국융합학회논문지
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• 제10권12호
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• pp.281-286
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• 2019

자동차의 하부를 수리하기 위해서는 차 밑으로 들어가야 된다. 그러나 이 작업은 수리공이 수리하기에 불편하기도 하고 사고를 일으킬 수도 있다. 이러한 난제들을 해결하기 위하여 개발된 장비가 자동차의 리프트이다. 본 연구에서는 세 가지의 자동차의 리프트 Model 1, 2, 3을 설계하였다. 구조용 강의 물성치를 모델들에 적용하고 동일한 조건으로 같은 하중을 가하여 해석을 하였다. Model 2, 3이 Model 1보다 더 적은 구조적 변형을 보였으며 Model 2, 3이 Model 1보다 구조적으로 더 안정적인 것을 나타냈다. 본 연구결과를 토대로 얻은 자동차 리프트 형상에 따른 내구성 해석을 통한 융합 연구에 대한 설계데이터를 활용함으로서 실생활에서의 자동차 수리 기자재 부품에 융합하여 그 미감을 보일 수 있다.

• 대한치과기공학회지
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• 제30권2호
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• pp.93-103
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• 2008

This research is designed for a consumer, not a supplier when it was designed. And the purpose is to present the reference data which is in order to improve the curriculum by analyzing the present subject of the curriculum. The research collected the curriculum for Dental Technology from a total of 20 schools --3-year colleges and 4-year colleges-- all in Korea. And we analyzed the average credits of subjects from students. As a result of this analysis, we get the conclusion below: 1. In a distribution which students answered about each subjects; Dental esthetic, Dental morphology I II, Dental morphology practice I II, and Seminar don't have many credits and mostly have a converged tendency in high points, according to the arithmetic mean of the major basis subjects. 2. In an analysis of the correlation which is based on the distinction of sex; Dental ceramics practice III, Medical terminology, Seminar, and The major basis subjects have a meaningful difference. (${\rho}$ < 0.05) 3. In an analysis of the correlation which is based on an age; The major basis subjects, and the application subjects have meaningful difference. (${\rho}$ < 0.05) 4. In a correlation coefficient between subjects; The correlation coefficient of the major application subjects is higher than the major basis subjects. According to the student ? t, we found that the level of significance is ${\rho}$ < 0.001, which is meaningful. We feel that Department of Dental Technology also highly need to design, and conduct focusing on a consumer who is working at the society, not a supplier. And we need to increase or decrease credits which have a meaningful difference.

• 대한치과기공학회지
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• 제29권2호
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• pp.49-64
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• 2007

This research collected the curriculum for Dental Technology from a total of 20 schools -3-year colleges and 4-year colleges- all in Korea. And we analyzed the average credits of subjects from students. As a result of this analysis, we get the conclusion below: 1. In a distribution which students answered about each subjects; Seminar, Dental morphology I II, Dental morphology practice I II, and Dental devices & instruments don't have many credits and mostly have a converged tendency in high points, according to the arithmetic mean of the major basis subjects. 2. In an analysis of the correlation which is based on the distinction of sex: Complete denture prosthodontics I II III, Dental orthodontics I II, Dental orthodontics practice I II, and Dental orthodontics & practice III have a meaningful difference. ($\rho$< 0.05 ) 3. In an analysis of the correlation which is based on an age The major basis subjects -Introduction to dental technology, Dental esthetic, and Dental casting procedure-, and the major application subjects -Crown and bridge prosthodontics practice, Complete denture prosthodontics, Dental orthodontics, Dental orthodontics practice, and Operative dentistry laboratory technology- have meaningful difference. ($\rho$< 0.05 ) 4. In a correlation coefficient between subjects; The correlation coefficient of the major application subjects is higher than the major basis subjects. According to the student - t, we found that the level of significance is $\rho$< 0.001, which is meaningful. We feel the lack of a limitation which we didn't survey all students who are major in Department of Dental Technology. And we also feel that we'd better to consider not only students who being in college but also graduated students.

• 대한소아치과학회지
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• 제25권2호
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• pp.430-440
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• 1998

This study was performed to establish the cephalometric standards and to compare measurement of Korean children in the Field I, II, III, IV, V, VI to Japanese and Caucasians by the Ricketts' analysis. Lateral cephalograms of 24 males and 27 females with normal occlusion and acceptable profile 9 years of age were obtained and statistically analyzed. 1. Norms of Korean males, females and both sexes at 9 years old were established. 2. Significant differences between male and female exist in incisor overjet, maxillary incisor protrusion, mandibular incisor inclination, cranial deflection, corpus length. Maxillary incisor of male was more protrude and overjet was larger than female 3. Korean was similar to Japanese but different from Caucasian. Compare with facial axis and facial depth, chin was retruded dolichofacial pattern and due to large mandibular plane angle and small corpus length, mandibular plane was inclined and mandible body was short. Compare with porion location, ramus position and posterior facial height, ramus was long and located posterior. Compare with maxillary depth and maxillary height, maxilla was located posterior and inferior. The distance between the upper molar and PTV was short, the amount of distalization is limited. Maxillary and mandibular incisor were more protruded and also lower lip was more protruded to esthetic line 4. In comparison between 9 and 11 years old, growth changes of facial depth, mandibular plane angle, corpus length and upper molar position were larger than that of Japanese and Caucasians.