• Maxillofacial Plastic and Reconstructive Surgery
• /
• 제39권
• /
• pp.23.1-23.8
• /
• 2017

Background: The aim of this study is to validate a new three-dimensional craniofacial stereophotogrammetry imaging system (3dMDface) through comparison with manual facial surface anthropometry. The null hypothesis was that there is no difference between craniofacial measurements using anthropometry vs. the 3dMDface system. Methods: Facial images using the new 3dMDface system were taken from six randomly selected subjects, sitting in natural head position, on six separate occasions each 1 week apart, repeated twice at each sitting. Exclusion criteria were excess facial hair, facial piercings and undergoing current dentofacial treatment. 3dMDvultus software allowed facial landmarks to be marked and measurements recorded. The same measurements were taken using manual anthropometry, using soluble eyeliner to pinpoint landmarks, and sliding and spreading callipers and measuring tape to measure distances. The setting for the investigation was a dental teaching hospital and regional (secondary and tertiary care) cleft centre. The main outcome measure was comparison of the craniofacial measurements using the two aforementioned techniques. Results: The results showed good agreement between craniofacial measurements using the 3dMDface system compared with manual anthropometry. For all measurements, except chin height and labial fissure width, there was a greater variability with the manual method compared to 3D assessment. Overall, there was a significantly greater variability in manual compared with 3D assessments (p < 0.02). Conclusions: The 3dMDface system is validated for craniofacial measurements.

• 컴퓨터교육학회논문지
• /
• 제21권2호
• /
• pp.59-71
• /
• 2018

본 연구는 K-12의 구성원 및 관계자들에게 교수학습 자료를 제공하고 있는 시 도 교육청의 교수학습지원센터에 대한 웹 접근성 준수 실태 분석을 통해 웹 접근성 향상을 위한 방향을 제안하기 위한 목적이 있다. 목적 달성을 위해 9개의 교수학습지원센터를 대상으로 평가하였다. 평가는 전문가 2명에 의한 1차 전문가 수동평가와 18명의 사용자가 진행하였다. 사용자 평가는 청각장애인, 시각장애인, 뇌병변 장애인, 고령자, 다양한 브라우저 사용자, 다양한 운영체제 사용자 등으로 구성되었다. 분석 결과, 전문가와 사용자 평가에서 웹 접근성을 준수하고 있는 교수학습지원센터는 1곳도 없었다. 전문가 평가 결과, 웹 디자인 개선, HTML 소스 오류 수정, 장애인을 위한 대체 수단 제공 등에 대한 오류가 발견되었다. 본 연구는 개선한 웹 접근성 평가 방법을 통해 향후 국내 웹 접근성 평가 연구의 방향성에 대한 다양한 논의를 제공하였다는 점에 의의가 있다.

• 한국초등과학교육학회지:초등과학교육
• /
• 제27권1호
• /
• pp.23-30
• /
• 2008

The purpose of this study was to provide the basic data for development of consulting model in elementary science class. For this, some questions on the teachers' perception for science instruction were surveyed to teachers : 13-item-questionnaires were given to 233 teachers in elementary school. The results of this study were as follows: Most of teachers were little understanding and experience of the science instruction consulting. They sensed that their science instruction were difficult, especially experimental activity in science class. They desired consulting mightly in their teaching methods for experimental activity. And it was found that most of them had a mind of consulting participation. Thus it is necessary to inform them the need of the instructional consulting. And in case of the development for the consulting manual, it should be consider the above results.

• 대한지역사회영양학회:학술대회논문집
• /
• 대한지역사회영양학회 2005년도 10th Anniversary International Symposium
• /
• pp.100-100
• /
• 2005

• 제어로봇시스템학회:학술대회논문집
• /
• 제어로봇시스템학회 1992년도 한국자동제어학술회의논문집(국제학술편); KOEX, Seoul; 19-21 Oct. 1992
• /
• pp.382-387
• /
• 1992

In order to obtain desired arc welding performance, we already developed an arc welding robot system that enabled coordinated motions of dual arm robots. In this system one robot arm holds a welding target as a positioning device, and the other robot moves the welding torch. Concerning to such a dual arm robot system, the positioning accuracy of robots is one important problem, since nowadays conventional industrial robots unfortunately don't have enough absolute accuracy in position. In order to cope with this problem, our robot system employed teaching playback method, where absolute error are compensated by the operator's visual feedback. Due to this system, an ideal arc welding considering the posture of the welding target and the directions of the gravity has become possible. Another problem still remains, while we developed an original teaching method of the dual arm robots with coordinated motions. The problem is that manual teaching tasks are still tedious since they need fine movements with intensive attentions. Therefore, we developed a 3-dimensional vision guided robot control method for our welding robot system with coordinated motions. In this paper we show our 3-dimensional vision sensor to guide our arc welding robot system with coordinated motions. A sensing device is compactly designed and is mounted on the tip of the arc welding robot. The sensor detects the 3-dimensional shape of groove on the target work which needs to be weld. And the welding robot is controlled to trace the grooves with accuracy. The principle of the 3-dimensional measurement is depend on the slit-ray projection method. In order to realize a slit-ray projection method, two laser slit-ray projectors and one CCD TV camera are compactly mounted. Tactful image processing enabled 3-dimensional data processing without suffering from disturbance lights. The 3-dimensional information of the target groove is combined with the rough teaching data they are given by the operator in advance. Therefore, the teaching tasks are simplified

• 대한지역사회영양학회지
• /
• 제10권6호
• /
• pp.795-804
• /
• 2005

The purpose of this study was to develop of nutritional education activities and effect evaluation in related curriculums for all Dongbu Elementary School children in Jinhae by the teacher in charge. This educational purpose was to build a desirable dietary behavior for optimal growth and health in elementary school children. The educational program contents were developed according to 1) selection of content related curriculums 2) analysis of contents related on dietary habits by grade 3) preparation teaching plans to build desirable dietary habits 4) development of teaching manual by turns. Twelve hours of nutrition education at all school classes were done from March 2 to December 10 2004 in Dongbu Elementary School in Jinhae, Gyeongnam. The education effects were evaluated through the questionnaire surveys before and after the education and their comparative analysis. The results of this study were summarized as follows : Forty percent of the underweight group, $22.8\%$ of the normal group, $42.2\%$ of the obese group had the wrong perceptions on their body figures, but after nutrition education $80.5\%$ of the underweight group, $94.3\%$ of the normal group, $97.9\%$ of the obese group gleaned the correct perceptions on their body figures (p < 0.001). As the effects of the education, the subjects who exercise more than 3 times in a week increased in all groups (p < 0.01-0.001), notably in the obese group. Meal regularity (p < 0.001) , skipping meals (p < 0.001), eating rate and snack selection patterns (p < 0.01-p < 0.001) also improved by nutrition education. We could also observe the effects of the nutrition education through the affirmative statements which appeared in their dietary records. These results showed a possibility of nutrition education activities in related curriculums to improve in dietary habits of school children. Next year, we will start with the system of nutrition teachers in elementary school, but nutrition teacher cannot undertake the task of teaching and food service management alone. Because of that, we intend to develop this program as an alternative proposal for the nutrition education in elementary schools. (Korean J Community Nutrition 10(6) $795\∼804$, 2005)

• 대한영양사협회학술지
• /
• 제12권3호
• /
• pp.299-306
• /
• 2006

The purpose of this study was to analyze effect of nutrition education after executing education nutrition with the nutrition education textbook, reconstructed 12 units, focused on older elementary school children and to evaluate interest and understanding of textbook. The subjects were 4th grade children. The results were as follows. The most interesting lesson contents was 'obesity(16.3%)', and the next were 'food poisoning' (13.3%), 'kimchi'(13.3%), and 'Korean table manners'(10.2%) in the 12 unit. Children who attended education nutrition answered 'interesting'(94.1%), 'understand easily'(97.1%) about the developed textbook. With regard to change in nutrition knowledge after education, the percentage of correct answers was increased in most of question except 'reason of snack' and 'weight-control'. And the total score of nutrition knowledge was risen(p<0.01), because the ratio of correct answer of 'importance of breakfast'(p<0.05) and 'nutrition labeling'(p<0.01) was improved especially. The ratio of desirable snack time 'between lunch and dinner' was higher after education(91.2%) than before(55.2%)(p<0.01). After education, the choice of 'Fruit and vegetable' of which desirable snack food was increased. Both the choice of 'bread' and 'fast food', a factor of oversupply calorie, was decreased. And after education, the percentage of sound snack place 'home' was improved. In regard of a meal environment, the percentage of 'every wash hand before eating' is 65.1% and there is scarcely change after education. Before education, children answered 'use it rightly'(82.4%) about 'how to eat with spoon and chopsticks', but it is lower after education. The ratio of 'leave food sometimes or always' is 47.1% before education, and the ratio of leftover food tend to decreased in school lunch. Relate to reason of leftover, the percentage of 'because of hate food' tend to decrease. This results suggests that the activity-centered nutrition education can help to change food behaviors and increase nutrition knowledge level of school children.

• 대한수학교육학회지:학교수학
• /
• 제7권2호
• /
• pp.169-192
• /
• 2005

본 연구는 수학 영재들을 위한 교수$\cdot$학습 자료 개발의 준거를 설정하고 교수$\cdot$학습 자료 개발의 절차 모형을 개발하여 그에 따른 주제탐구형 수학 영재 교수$\cdot$학습 자료의 실제적인 모델을 제시하는 것이다. 이를 위하여 우선 수학 영재 교수$\cdot$학습 자료 개발 준거와 파네스의 창의적 문제해결 학습 모형에 따라 '약수를 통한 자연수 탐구'라는 주제로 4차시 분량의 주제 탐구형 수학 영재 교수$\cdot$학습 자료를 개발하였다. 이 자료를 이용하여 대학부설 영재교육원의 초등 수학 심화/사사반 학생들과 교육청 부설 영재교육원 초등 수학반 영재아들을 대상으로 4차에 걸쳐 현장에 적용하면서 수정 및 재구성을 한 자료를 부록에 실었다. 그리고 그 자료를 수업에 적용$\cdot$분석함으로써 원형 및 자료 개발의 타당성을 확인하는 과정을 통해 얻게된 수학 영재 교수$\cdot$학습 자료 개발의 방향과 시사점을 제안하였다.

• 한국과학교육학회지
• /
• 제12권2호
• /
• pp.97-107
• /
• 1992

ln this study, we analyzed 5 science textbooks currently used for the 7th graders quantitatively by using the science textbook rating system of Collette and Chiappetta(1986), making meta-analysis of the results of 17 graduate school students of Seoul National University. The rating system consists of 11 categories with detailed items respectively : content, organization, reading level, instruction approach, illustrations, end-chapter teaching aids, laboratory activities in text and/or accompanying manual, teacher aids, indices and glossaries and mechanical makeup of text. Each item in the checklist is to be given between one and five points and the total number of possible points in this rating system is 290. It was shown that 5 science textbooks currently used for 7th-year-students were all "poor" in terms of total points and had, at large, uniformed results especially in 10 items; 7 items concerning moral and ethical implications of science, vocabulary lists, accompanying laboratory manual, annotated editions for test, supply list for laboratory program, student workbook and glossary with low points, while 3 items concerning facilities needed for laboratory activities, activities relevant to the content and textbook size with high points. A Science teachers could get a broad view with a correct impression of the books usefulness in making an evaluation of available textbooks.

• 수산해양교육연구
• /
• 제22권2호
• /
• pp.275-286
• /
• 2010

It is required to amend the manuals and textbooks that have contents related an ocean. There are 4 manuals covered about an ocean from all of 12 manuals for the course of the kindergarten education. And there are also 47 textbooks related an ocean among 145 books for an elementary course of study. It is necessary to analyze educational goal, contents, and other concerns. Here is the amendment against present manuals and textbooks. The objective for teaching the kindergarten is involved in the manuals properly. But, It is required to revise 'the oceanic artificial environment and facilities', and 'marine pollution' in contents of the manual. Some contents don't mention about an ocean, so it is necessary to add photos and maps covered with marine parts. Plus, there are no mentions about the value and attitude for an educational goal in the elementary textbooks. And it is required to add the solutions to conserve the sea and ethics about oceanic preservation. Also, it is needed to utilize cartoons and maps which give students interest.