유아용 체력검사도구 개발을 위한 기초연구

최중근,황해익 부산대학교 영유아보육연구소 2002 영유아보육연구 Vol.8 No.-

The purpose of this study was to present materials on the development of physical assessment for young children when early childhood education facilities like kindergartens and nursery schools conduct physical exams. The following were the process and main findings of the study: First, the level of necessity for the development of physical assessment for young children was examined with kindergarten teachers the subjects. The subjects were 50 teachers from private and public kindergartens in city U. For the question "the necessity for the development of physical assessment", "very necessary" and "necessary" accounted for 83% of the respondents, which meant most teachers share the necessity and demand the development and popularization of the physical assessment. Second, the selection of exam items and their suitability were examined with experts the subjects. Among the 37 experts were 6 professors of early childhood education departments, 6 professors of physical education departments, 5 presenters in the academic journals of the associations related with young children' physical education, 10 trainers with over 3 years' experience in young children' physical education, and 10 kindergarten teachers with over 10 years' experience and the selection of exam items associated with the factors of young children' physical exam and their suitability were examined. The exam items selected by the experts were flexibility-trunk flexion sitting position test, speed-20-meter dash, balance-stork standing, body composition-body mass index(BMI), agility-zigzag run, muscular strength and muscular endurance-extended arm hanging, and power-standing broad and long jump. As for the suitability of the selected items, more than 70% of the experts replied "very suitable" and "suitable." Third, the trial plan of "physical assessment for children" chosen by the experts was applied on 78 infants attending S kindergarten in city U : 15 full 3-year-olds, 33 full 4-year-olds, and 30 full 5-year-olds. The "physical assessment for young children" turned out to be suitable in general. Fourth, "the application outline of convenient physical assessment for young children" and "the record card of convenient physical assessment for young children" were presented for the convenience of the field use by analyzing the results from the field test. As the teachers in the field required, convenient physical assessment for young children should be developed and popularized and the development of young children' physical strength needs to be promoted by devising evaluation criteria of the national level.

증폭원리를 이용한 초정밀 나노스테이지 개발

최수창,김용우,김진근,박정우,이득우 한국공작기계학회 2008 한국공작기계학회 추계학술대회논문집 Vol.2008 No.-

The laser-interferometer and capacitive displacement sensors were used to increase the resolution of the feedback system for stage used for measuring and processing the system. However, it was difficult to obtain high-resolution measurements, considering the measuring method and structural characteristics. This study developed a inverse magnification type stage to evaluate characteristics. Therefore, we introduced a nano-stage with a magnification mechanism for the position feedback system.

중소기업형 CIM시스템 구축을 위한 생산계획수립 및 실적파악 모듈

최후곤,신완선,장중순,서준성,여명구,안동근,김진봉 成均館大學校 科學技術硏究所 1996 論文集 Vol.47 No.2

This study Focuses on developing several modules involved in an integrated production information system for medium- or small-sized industries. The modules of order management, quality control, production scheduling, and shop management are executed for an example case industry. The potential values of this research includes that the major information modules to collect, analysis, and display production data and shop data for constructing the computer integrated manufacturing system(CIMS) are programmed with various features of medium- or small-sized industries

等電點 電氣泳動에 의한 배추와 양배추 育成系統에서의 自家不和合性 關聯 glycoproteins의 比較分析

이정명,최근원,민병훈,이태진,백남권,이철우 경희대학교 부설 식량자원개발연구소 1994 硏究論文集 Vol.15 No.-

等電點 電氣泳動을 이용하여 배추의 몇 개의 5-allele 造成과 그들의 F₁에서 自家不和合性의 발현과 관련된 glycoprotein의 band 樣相을 비교 분석한 결과는 다음과 같다. 1. 배추의 內婚系와 이들 간의 에서 柱頭內 glycoprotein의 band pattern을 分析한 결과 兩親의 band pattern이 F₁으로 그대로 遺傳되므로 써 명확한 同定 및 區分이 가능하였다. 2. 공시된 배추의 계통 중에서 8개의 等電點을 발견하였는데 대부분의 系統에서 pl 7.0 또는 8.6에서 major band를 보이고 있었다. 따라서 major band만으로는 S-allele genotype의 명확한 동정이 불가능한 경우도 상당히 있었다. 3. 상기 bands (pI 6.8 and 7.7)에서의 glycoprotein의 分子量은 pI 7.0에서 49,000-50,000이었고 pI 8.6에서 59,000으로 推定되었다. 4. 양배추는 배추에 비해서 glycoprotein의 major bands와 minor bands수가 많고 매우 다양하게 나타나므로써 S-allele 동정이 배추보다 매우 용이할 것임을 보여 주었다. Band patterns of glycoproteins associated with the expression of self-incompatibility were examined in the stigmatic extracts of self-incompatible Chinese cabbage inbred lines and the hybrids. Clear relationship in the band pattern could be confirmed in the parents and their hybrid, indicating the inheritance of S-alleles to the progeny. Total of 8 isoelectric points were indentified in the inbreds, with the major bands at pI 7.0 and 8.6. Thereforne, in some genotypes, identification of cultivars or S-allele genotypes were impossible with the major bands only. The molecular weights of the glycoproteins were estimated to be 49,000-50,000 for pI 7.0 and 59,000 for pI 8.6 bands. The stigmatic extracts from cabbages showed numerous major and minor bands so that identification of S-allele genotype will be much easier as compared to chinese cabbage.

2개의 분리판 사이에서 분사되는 평행 3중 분류에 의한 비정상 난류 유동장 해석

유근종,최훈기,정지훈 國立 昌原大學校 產業技術硏究院 2004 産技硏論文集 Vol.18 No.-

LES is applied to analyze unsteady turbulent triple-jet water flows which are commonly found in thermal stripping phenomena. Current analyses performed to find effect of different SGS models on flow field with partition plates. LES tends to predict higher level of RMS temperatures compared to those of experiment indicating very active mixing effect among triple jets. The LES is found to be able to provide reliable frequency information of temperature fluctuation. The different SGS models show no significant difference in prediction ability, while Smagorinky-Lilly model yields slightly stronger mixing activity.

담관 낭선암 1례

박건욱,홍기봉,정재열,노명환,한상영,최석렬,신우원,나서희 동아대학교의과대학 1997 동아의대학술지 Vol.9 No.1

중학교 과학 교과서 분별 증류 실험의 비교 분석 및 개선

柳五鉉,崔文永,宋周眩,권정근,白盛惠,朴國泰 한국교원대학교 과학교육연구소 2001 청람과학교육연구논총 Vol.11 No.1

이 연구의 목적은 제 6차 교육과정에 의한 중학교 1학년 과학 교과서 분별 증류 실험의 문제점을 파악하고, 중학생들이 분별 증류 실험을 능률적으로 수행할 수 있는 실험 방법을 제시하고자 하는 것이다. 이를 위한 첫 번째 단계로서 현재 사용되고 있는 8종의 과학 교과서를 분별 증류 실험 장치와 액체 혼합물의 종류에 따라 6가지로 분류하였다. 두 번째 단계로서 액체 혼합물을 가열 방법에 따라 직접가열과 물 중탕 가열로 나누어 교과서 실험과정에 따라 같은 실험을 세 번 실시하였다. 세 번째 단계로서 실험 결과의 문제점을 해결하기 위한 대안 실험을 실시하였다. 대안 실험에서는 알코을 램프로 직접가열 하는 방법과 기름 중탕으로 가열하는 방법, 그리고 가열 맨틀을 사용하여 가열하는 방법을 사용하였다. 연구결과, 가지 달린 둥근 플라스크를 직접 가열하는 실험 결과가 가지 달린 시험관을 물 중탕으로 가열하는 실험 결과보다 이론적인 결과에 근접하였다. 그리고 가지 달린 둥근 플라스크를 직접 가열하는 실험에서 플라스크 윗 부분을 보온해 주는 실험이 보온하지 않은 실험보다 실험 결과가 더 나았다. 대안 실험에서는 액체 혼합물의 증류 온도 증가를 보면서 가열 맨틀의 가열 온도를 을려 준 실험의 결과가 이론적인 결과에 가장 가까웠다. 이러한 연구 결과로부터 가지 달린 시험관을 물 중탕으로 가열하는 분별 증류 실험 장치는 탐구실험 수업에 부적절한 것이므로 개선이 요구되며, 중학교 과학실 여건을 고려할 때, 액체 혼합물의 증류 온도 증가를 보면서 가열 맨틀의 가열 온도를 변화시키는 분별 증류 실험이 가장 능률적인 방법임을 알 수 있었다. The purpose of this study was to find out the problems on the fractional distillation experiments in the middle school science textbooks based on the 6th curriculum and to suggest an efficient experiment method for the middle school students. The first step was the classification of the experiments in 8 science textbooks according to heating apparatus and liquid mixtures. The second step was doing each experiment 3 times followed by the experimental process in the textbooks. The third step was developing the alternative experiments for solving the problems found in the second step. The heating method used in the alternative experiments were direct heating, oil bath, and heating mantle. The results of the second step showed that the direct heating experiment of branched round flask was more close to the theoretical prediction than the experiment of water bath heating of branched test tube. Also the direct heating experiment of thermally insulated branched round flask was better than the result of the experiment which was not insulated. The results of the third step showed that the experiment using heating mantle regulated heating power by observing the temperature of distillate gave the closest result to the theoretical prediction. From the above results, it is concluded that the experiment using branched test-tube with water bath heating is not adequate for the fractional distillation and an alternative experiment using insulated branched round flask with heating mantle regulated heating power during experiment is recommended.

단일 쇄석다짐말뚝의 재하시험에 관한 연구

이민희,정성민,황근배,최용규 경성대학교 공학기술연구소 2003 공학기술연구지 Vol.S1 No.1

Among soft ground treatment methods with granular soil used in domestic, the sand compaction pile method has been utilized greatly, but, as a result of exhaustion of sand and increase of unit cost, a necessity of an alternative method is suggested. In this study, the static load tests for crushed-stone compaction piles which were constructed on test field were performed. Based on test results, stress concentration ratios between the crushed-stone compaction pile and the soft ground were investigated and estimated. At laoding pressure, settlement showed the decreasing tendency as replacement rate increases. At replacement rate of 20%, yield pressure was smaller but, at replacement rate of 30% and 40%, settlement and yield pressure were similar. The stress concentration ratio was the range of 1.7 to 3.0 and it was higher as replacement rate was increased more.

대구경 현장타설말뚝에 대한 수평재하시험 및 말뚝 깊이별 수평변위분포에 대한 연구

이민희,황근배,정성민,최용규 경성대학교 공학기술연구소 2003 공학기술연구지 Vol.S2 No.1

Most of pile foundations are a condition of fixed head on pile, but lateral loading test of pile have performed to free head on generally This study performed field lateral loading test accompanying lateral displacement by depth of pile for two cases(fixed head and free head) and analyzed lateral behavior of large drilled shaft. Further more compared theoretical equation with result of lateral loading test.

치커리와 쑥갓의 무균자엽절편체 생산 효율 증진

황현정,전혜정,최근원,김영채 경희대학교식량자원개발연구소 2005 硏究論文集 Vol.24 No.-

치커리와 쑥갓에 있어 식물조직배양이나 형질전환 과정에 필요한 무균 절편체를 얻기 위한 적절한 방법을 제안하기 위해 기내 파종을 위한 소독조건과 배지조성 및 종류에 관한 실험들이 실시되었다. 치커리 'Precole'은 10% NaOCl, 15분간, 'Chiavari'는 5% NaOCl, 15분간이 기내파종 시 발아 및 자엽전개를 촉진시키고 오염발생을 억제하는 조건으로 선발되었다. 쑥갓에서는 발아 및 자엽전개율에 있어 NaOCl 처리 간에 차이는 없었지만 10% NaOCl, 30분간 처리에서 가장 낮은 오염율이 관측되었다. 치커리와 쑥갓의 발아와 자엽전개율 모두 인조토양배지의 사용으로 MS 배지에 비해 현저히 향상 되었다. 비록 육안으로는 오염여부를 관측할 수는 없었지만 이들 인조토양배지에서 자란 쑥갓 묘의 자엽을 MS배지에 치상하여 배양 시에는 오염증상이 나타났으며 이들을 NaOCl 1%로 15분간 소독 후 치상한 결과 오염율을 현저히 낮출 수 있었다. Experiments on the sterilization condition and medium composition and type for in vitro sowing were conducted to suggest a proper way to produce enough aseptic explants for tissue culture or transformation study in chicory and garland chrysanthemum. Fifteen minutes soaking treatment with 10% NaOCl for chicory 'Precole' and 15 minutes with 5% NaOCl for chicory 'Chiavari' were selected as proper sterilization conditions to promote in vitro germination and cotyledon expansion and inhibit the seedling contamination from seed itself. In garland chrysanthemum, there was no significant difference in germination and cotyledon expansion ratio among NaOCl treatments, but the lowest seedling contamination ratio was observed by 30 minutes soaking with 10% NaOCl. Both germination and cotyledon expansion ratio in chicory and garland chrysanthemum were significantly increased by using the artificial soil media in contrast to MS media. Although seedling contamination with the artificial soil media could not be observed with bare eyes, cotyledon explants harvested from the plants grown on the media showed some fungal growth when they were placed onto MS media for further culture. However the percentage of the contamination from these explants was dramatically decreased by 15 minutes sterilization with 1% NaOCl.