펠던크라이스 기법, 탄성밴드 운동 및 복합운동 적용이 현대무용전공자의 체간근력에 미치는 영향

김채수(Kim Chae-Soo),권혜영(Kwon Hye-Young),이원재(Lee Won-Jae),조창모(Jo Chang-Mo),김진환(Kim Jin-Hwan),주성범(Ju Sung-Bum),이미경(Lee Mi-Kyoung) 한국체육과학회 2011 한국체육과학회지 Vol.20 No.1

This study is carried out to examine the effect of applying Feldenkrais method, elastic band training and combined training on trunk muscle. The subjects of this study were 32 modern dance majors and they were divided into four groups which consists of 8 peoples each, Feldenkrais method group(modern dance + Feldenkrais method), elastic band training group(modern dance + elastic band training), combined training group(modern dance + Feldenkrais method + elastic band training), and control group(modern dance). Measurement variables which are trunk muscle were measured before training, and after 4 and 8 weeks training and the results are as follow: In the left muscle strength change at Centaur 0°, Feldenkrais method group, elastic band training group and combined training group showed significant increase after 8 weeks training compared to before training. In the right muscle strength change, Feldenkrais method group and combined training group had significant increase after 8 weeks training. In the left muscle strength change at Centaur 45°, Feldenkrais method group and combined training group showed significant increase after 8 weeks training compared to before training and after 4 weeks training. Also elastic band training group showed significant increase after 8 weeks training compared to before training. In the right muscle strength change, Feldenkrais method group and elastic band training group significantly increased after 8 weeks training compared to before training. In the left muscle strength change at Centaur 90°, Feldenkrais method group and combined training group showed significant increase after 4 and 8 weeks training compared to before training. In the right muscle strength change, Feldenkrais method group showed significant increase after 4 and 8 weeks training compared to before training, and elastic band training group significantly increased after 8weeks training compared to before training. In the left muscle strength change at Centaur 135°, there was no significant changes. In the right muscle strength change, elastic band training group and combined training group showed significant increase after 8 weeks training compared to before training. In the left muscle strength change at Centaur 180°, combined training group showed significant increase after 4 and 8 weeks training compared to before training. In the right muscle strength change, combined training group showed significant increase after 4 and 8 weeks training compared to before training. From above results, applying 8 weeks regular program of Feldenkrais method, elastic band training and combined training to modern dance majors showed positive changes on improvement of trunk muscle strength and physical strength. Also this study implemented to verify the effects of trunk muscle strength and body balance through supplementary training program, and showed the effects in the training group and control group after 8 weeks trunk muscle strengthening program. Feldenkrais method, elastic band training and combined training are very effective to improve trunk muscle strength of modern dance majors so that continuous implementation and application of these effective training program shall be provided for strengthening trunk muscle.

Investigation of channel mobility in AlGaN/GaN high-electron-mobility transistors

Chang, Sung-Jae,Kang, Hee-Sung,Lee, Jae-Hoon,Yang, Jie,Bhuiyan, Maruf,Jo, Young-Woo,Cui, Sharon,Lee, Jung-Hee,Ma, Tso-Ping Institute of Pure and Applied Physics 2016 Japanese Journal of Applied Physics Vol.55 No.4

<P>We have investigated the channel mobility in the gated region of a set of high-quality AlGaN/GaN high-electron-mobility transistors (HEMTs). The resistances in the contact, access, and gated regions were extracted from straightforward I-D(V-G) measurements on sets of HEMTs with four different gate-to-drain distances. By correcting for the effects of the contact and access resistances, much more accurate effective mobility curves in the gated region, compared to those reported in the past, have been obtained. The maximum effective mobility in that region has been found to be 1100cm(2)V(-1) s(-1) at carrier density n(s) = 7 x 10(12)cm(-2) at room temperature. We have extracted the mobility curves in a wide range of temperatures (80 to 520 K) and carrier concentrations (up to 1.3 x 10(13)cm(-2)). Our systematic measurements have revealed various dominant scattering mechanisms as the temperature and carrier concentration change. (C) 2016 The Japan Society of Applied Physics</P>

금 합금 보철물의 교합면 삭제로 인한 임플란트-골 계면으로의 열전달에 관한 연구

조재영,강선녀,정창모,윤미정,허중보,전영찬 대한치과보철학회 2012 대한치과보철학회지 Vol.50 No.1

연구 목적: 임플란트-골 계면에서 발생하는 과도한 열은 골유착을 저해하여 임플란트의 실패를 유발한다. 이에 이번 연구에서는 임플란트 금 합금 보철물의 교합면 삭제시 임플란트-골 계면으로의 열전달 양상과 냉각 방식의 효율성을 알아 보고자 하였다. 연구 재료 및 방법: 온도 감지 장치 제작을 위하여 Internal cone 연결형태의 임플란트에 16개의K형 열전대를 부착하여 아크릴릭 레진에 포매하였다. 치과용 금 합금과 주조용 abutment를 사용하여 교합면에 3개의 요철을 가지는 시편을 10개 제작하였고, 연결 나사를 이용하여 임플란트와 연결한 뒤 온도 감지 장치를 37℃로 유지되는 수조에 위치시켰다. 저속 핸드피스와 green stone bur를 이용하여 30초 동안 보철물의 요철을 삭제하였는데, 무냉각군, 공기 냉각 군, 물 분사 냉각 군으로 나누어 요철을 삭제하였다. 보철물이 삭제 되는 동안 임플란트의 부위별로 온도가 0.05초 간격으로 기록되었고, 삭제를 멈춘 뒤에도 무 냉각 군의 경우 임계 온도인 47℃ 이하로 온도가 하강할 때까지, 공기 냉각군과 물 분사 냉각군의 경우 삭제 중단 후 30초 동안 추가로 온도를 기록하였다. 냉각 방식에 따른 임플란트-골 계면의 온도를 알아보고, 임플란트의 부위별 온도변화의 유의차를 알아보기 위하여 one-way ANOVA를 실시하였고, Turkey HSD 이용하여 95% 유의수준에서 사후 검증하였다. 결과: 무 냉각 군은 임플란트-골 계면의 온도가 47℃ 이상으로 상승하였으며, 임플란트의 경부에서 유의하게 높은 열이 측정되었다(P>.05). 공기냉각군과 물분사 냉각군은 임플란트-골 계면의 온도가 47℃ 이하로 유지되었다. 무 냉각 군에서 임플란트 경부의 온도가 47℃에 도달되는 데는 약 10.8 ± 1.5초가 소요되었다. 공기 냉각 군과 물 분사 냉각 군 사이에서는 임플란트-골 계면 온도의 유의차가 없었다(P>.05) 결론: 이상의 결과로부터 임플란트 금 합금 보철물의 교합면 삭제 시, 임플란트 주위 조직에 위해를 가할 수 있는 임계 온도 이상의 열이 발생했음을 알 수 있었으며, 냉각방식은 공기 냉각과 물 분사 냉각 모두 효과적이라고 생각된다. PURPOSE. The purpose of this study was to analyze temperature change along the implant-bone interface induced by grinding the occlusal surface of implant gold prosthesis and to compare the temperature generated by grinding of prosthesis with different cooling methods. MATERIALS AND METHODS. The experimental gold prostheses were fabricated with dental gold alloy and castable abutment. The prostheses had 3 cylindrical protrusions on the occlusal surface with 1mm in height. Temperature was measured using 16 thermocouple wires attached to the implant fixture surface and the fixture was embedded in an acrylic resin block inside the 37℃ water bath. Cylinders were grinded for a period of 30 second with a low-speed handpiece with green stone point. One cylindrical protrusion was grinded without cooling, the second one was grinded with air blow, and the third one was grinded with water-spray. RESULTS. The mean maximum temperature was measured more than 47℃ of the implant and the maximum temperature was measured at the cervical portion of the implant in the group without cooling. There was statistically significant difference between the group without cooling and the groups with cooling (P<.05). However, there was no significant difference at all portion of implant in the groups with cooling (P>.05). CONCLUSION. The results of this study support that the grinding of implant gold prosthesis without cooling may damage the peri-implant tissue. The continuous use of air blow and water-spray adjacent to prosthesis during the grinding of implant gold prosthesis may prove to be beneficial for cooling of the implant.

김치류 및 절임류의 표준화에 관한 조사 연구

曺哉銑,南昌祐 同德女子大學校 1979 同大論叢 Vol.9 No.1

Kimchi is a fermented vegetable product which is made of the chinese cabbage, salt and some spices. There are about 65 products in Korean kimchies and related products. They are olassified in groups such as kimchi, kak-tu-ki, tong-chi-mi, shick-hye, chang-a-chi and pickles. The varieties of kimchi represent 58% of the total products, and the other groups are in the order of chang-a-chi, kak-tu-ki, pickles and tong-chi-mi in the percentage. Either one of cabbage, raddish or cucumber is most frequently used as major ingredients of the products, and other vegetables, fish and meat are also used occasionally. Subsidiary ingredients such as spices, seasonings, fruits, vegetables, fish, meats etc., are added to those major ingredients. The varieties of those ingredients ofr the products reach 111 items. The chinese cabbage, radish, salt, red pepper, garlic, welsh onion,ginger, fish pastes and wheat flour are the basic ingredients. Several kinds of fish pastes are used for winter products, and wheat flour for summer products. Tong-kimchi, major product in winter is made of the chinese cabbage as the major ingredient, and radish, garlic ginger, red pepper, salt, etc., as subsidiary ingredient. Yol-mu-kimchi, major product in summer, is made of yol-mu, a young radish, as the major ingredient, and wheat folur, welsh onion, garlic, gingerm salt, red pepper and so on. Other products were also discussed.

방사선조사와 Paclitaxel의 병합요법에 의한 신내막 과증식억제

장기육,승기배,강동헌,임상현,정해억,임효영,김태균,김연실,채장성,김재형,홍순조,윤세철,최규보 대한순환기학회 2000 Korean Circulation Journal Vol.30 No.6

자유학기제 연구학교의 수업과 교육활동의 특징 분석

이재창,홍후조,김미진,임재일 이화여자대학교 교과교육연구소 2014 교과교육학연구 Vol.18 No.4

본 연구에서는 2013년도에 실시한 자유학기제 연구학교 42개교의 운영 보고서를 분석함으로써 시험이 없는 교육의양상을 살펴보았다. 연구결과 자유학기제는 첫째, 공통과정 기본교과 수업방식의 대부분이 학생주도적인 활동으로이루어지고 있었다. 둘째, 진로탐색 활동이 다양화되고 심화되었다. 셋째, 자율과정은 주입식 교육에서 벗어나 다양한 활동을 제공하고 있었다. 넷째, 학교는 지역사회와의 인적․물적 자원과 연계 지도 인프라 구축을 통해 연계 지도를 하고 있었다. 반면, 자유학기제의 여러 가지 문제점도 발견할 수 있었다. 우선, 자유학기제의 차별화된 교육활동은 중학교 1학년내, 그리고 학년 간의 교육계획에 있어서 혼란을 야기하고 있었다. 또한, 자유학기제 해당 학생들에게만 편중된 교육을 제공하여 타 학년과의 위화감과 소외감도 조성하고 있었다. 그리고 진로탐색 활동의 경우 지적인 탐색과 진로 검사와상담 ,체험을 통한 체득 등 탐색하고 체득하는 활동에만 편중되어 있었다. 끝으로, 자율과정의선택 프로그램 활동, 동아리 활동등 다양한 범주들이 중복되고 비체계적이라는 문제가 발견되었다. 이러한 문제점을해결하고자 본 연구에서는 첫째, 교육과정 계획 단계부터 운영에 이르기까지 교사들이 공동으로 연구하여 자유학기제를 운영하는 학기와 일반 학기의 격차를 줄여야 한다. 둘째, 자유학기제 시행으로 인한 긍정적인 효과들을 타 학년에도적용할 필요가 있다. 셋째, 진로윤리교육의 확대를 통해 균형 잡힌 진로탐색 활동 전개를 주문하였다. 넷째, 자율과정 중 성격과 내용 면에서 서로 중복된 범주들을 체계적으로 정비하여야 할 필요가 있음을 강조하였다 This research analyzed the reports on Free Semester System of 42 pilot schools, which do not have any assessment, in order to inspect the new ways of instructions and educational activities. The results are as follows; First, most of the basic subjects instructions on common courses were student-centered activities. Second, career exploration activities were diversified and enhanced. Third, optional courses provided various activities which fitted students’ interests and needs. Fourth, all of the educational necessities were provided for the pilot schools by the local community. However, Free Semester System’s new curriculum causes some confusion in the operation of educational plans, not only for first grade students but also second and third grade students. nbalanced new educational experiences among Free Semester System students and other grade students cause a sense of incongruity and alienation. In addition, career exploration activities put too much emphasis on intellectual exploration, career-test and career-counselling, and career related experience. Finally, optional courses programs were often redundant and required organization. uggestions to solve these problems are as follows; First, School staffs should build the school curriculum together from planning to management in order to decrease the gap between Free Semester System and general semester system. Second, the positive effect of Free Semester System should be applied to other grades to solve the sense of incongruity and to increase the quality of education. Third, career exploration activities need to be balanced by increasing the learning of vocational ethics. Fourth, optional courses have to be re-arranged to be more systematic. If additional research is conducted in accordance with the suggestions made by this research, Free Semester System will regain the authentic educational role of middle school, which is different from that of junior high school, and will play a role as the bridge of lementary school’s basic education and high school’s career-based education.

韓國産 율무 (Coix lachryma jovi var. mayuen R.Stapf) 전분의 이화학적 특성에 관한 연구

金長松,曺哉銑,李相圭 慶熙大學校 1984 論文集 Vol.13 No.-

This study was conducted to investigate the physicochemical properties of Korean adlay (Coix lachryma var. mayuen, R. Stapf) stach. The starch granules were pentagonal and hexagonal with diameter of 10-20 μ in length and 13 μ in width. Crystalinity of the granules showed A-type by X-ray diffraction. Amylose content, ferricyanide and alkali number of the starch were 24%, 0.31 and 10.5, respectively. Gelatinization of the starch begin at 55-65℃ and completed at the temperature between 65 and 70℃. Amylographic data of 7% starch solution showed that the pasting temperature was 72℃ and maximum peak height was 90 B.U. and gelatinized paste showed very high setback.

초음파 검사 기반의 용접결함 분류성능 개선에 관한 연구

김재열,윤성운,김창현,송경석,양동조,--,-- 한국공작기계학회 2004 한국공작기계학회 춘계학술대회논문집 Vol.2004 No.-

In this study, we made a comparative study of backpropagation neural network and probabilistic neural network and bayesian classifier and perceptron as shape recognition algorithm of welding flaws. For this purpose, variables are applied the same to four algorithms. Here, feature variable is composed of time domain signal itself and frequency domain signal itself. Through this process, we comfirmed advantages/disadvantages of four algorithms and identified application methods of four algorithms.

3차원 레이저 진동측정기를 이용한 고속회전 모터의 진동특성 분석

김재열,김창현,송경석,양동조,곽이구,이창선 한국공작기계학회 2003 한국공작기계학회 춘계학술대회논문집 Vol.2003 No.-

Noise cause is dividing to fluid noise by exhaust flow of fan and vibration noise by rotational vibration of motor. Until now, measuring method has been used to measure vibration by the accelerometer, this method has been not measured for the vibration in some parts of brush and commutator because of motor construction. This research was purposed on the accurate analysis, using laser vibration analyzer, of noise cause against the difficult part in old times. By using this measured data, we would like to use for the design of silent motor.

적외선 열화상 카메라를 이용한 열적 결함부 자동 검출 모니터링 시스템 개발

김재열,양동조,한재호,유신,김창현,송경석 한국비파괴검사학회 2004 학술대회 논문집 Vol.- No.-

The most part of various electrics has been affected by thermal failure due to electric overload. Contact-sensor has been used, for detection to this thermal failure, until now. But, it is impossible to detect the unsuitable element by using contact-temperature-sensor. This problem, with development of the infrared thermal vision camera, will be solved. Because it take some advantages which are composed of non-contact detect and non-destructive detect for temperature distribution, it is possible to detect on the temperature of revolution part, high temperature part. We developed the automatic detection monitoring system for thermal failure part on electrics with overload by using the infrared thermal vision camera. The first stage, thermal signal was detected from the infrared thermal vision camera, and then the data that was wanted from user was shown. The second stage, if the temperature that was decided to failure coded to the program, automatically electrics was shut off. This monitoring system is possible to apply on various conveniences in the whole industrial sites.