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李啓暎,韓泰龍 全北大學校附設 스포츠科學硏究所 1987 논문집 Vol.- No.4
The objectives of this study were to study on the somatotype and physical fitness of woman table tennis players. For this purpose the writer surveyed the Heath-Carter Anthropometric somatotype method and physical fitness. The total 26 female athletes were selected and measured. The conclusion of this study were as follows : 1. The correlation coefficient between Endomorphy and power, and Muscular endurance were revealed as the certainly correlation. 2. The correlation coefficient between mesomorphy and muscular strength was revealed as the high correlation, Agility, power turn out certainly correlation. 3. The correlation coefficient between ectomorphy and power was revealed as the certainly correlation.
이개명 제주대학교 공과대학 첨단기술연구소 2004 尖端技術硏究所論文集 Vol.15 No.1
Electrical equipments and systems must be grounded to be protect by surgy and lighting and not to cause electrical shock. The required grounding resistance to the respective electrical system is specified in the law. Many traffic electronic systems were established on the roads when ITS(intelligent transport system) was constructed at 2,002 year in the Cheju Island. The systems must be also grounded. In this paper, earth resistivities of the places which the traffic system were to be established, measured and analyzed. Grounding resistance and constructing method depend on earth resistivity of the place. As the altitude of the place is higher, the earth resistivity is shown to become larger. And there are the place, exceptionally, to have low earth resistivity though to be in the vicinity of a high earth resistivity
이개명,고민철 제주대학교 공과대학 첨단기술연구소 2004 尖端技術硏究所論文集 Vol.15 No.1
Temperature stabilities of dielectric constants and resonance frequencies of the substrates are very important in piezoelectric ceramics oscillators and filters. In this study, it was investigated thermal resisting property of the length-extensional vibration mode of PZT ceramics. The mode can be utilized in fabricating ultra-small 455kHz IF devices. We fabricated the ceramic specimens with x=51, 52, 53, 54, 55 in the Pb(Zr_(x)Ti_(1-x))0_(3) system. And their resonance frequencies and dielectric constants were measured before and after thermal aging. In order to investigate the influence of thermal aging on thermal resisting properties, thermally aged specimens were once more thermally aged and then their resonance frequencies and dielectric constants were measured. Domain orientation after poling was shown to be stabilized by thermal aging, but resonance frequencies of the specimen with x=54, 55 were changed by second thermal aging whose temperature was higher than first thermal aging temperature. The specimen with x=54 which is in M.P.B. after thermal aging has the smallest temperature coefficients of resonance frequency, but the highest temperature coefficients of dielectric constant.
千在植,鄭世賢 단국대학교 1994 論文集 Vol.28 No.-
Sound is the sensation produced when longitudinal variations of molecules in the external environment. ie, altenate phases of condensation and rarefaction of the molecules, strike the tympanic membrane. The purpose of speaking is communication between humans. It is very important for social life to speak and hear exactly. It there were problems to speak, it is very unconvenient for social life psychologically. The purpose of this experiment was to analyse the frequency and duration of pronunciation. Each 20 male and female who were living in Seoul and speaking standard Korean, had participated in this experiment. Each 10 male and female, who were wearing dentures and adapted at least over 1 years, had participated in this experiment also. The data were taken and analysed by Philips PM 3350A Storage Oscilloscope which had 68008 up microprocessor IEEE-488 interface. The results were as follows 1. High pitches were appeared in early stage of pronunciation in plosive sounds(ㅂ, ㅋ, ㅌ, ㅍ)and Y system vowel diphthorgs. 2. Condensation waves were seen in later stage of pronunciation in frictional sounds(ㅅ,ㅎ) and nasal sound(ㄴ, ㅁ). 3. the average data of frequency and duration were as follows ◁ 표 삽입 ▷ (원문을 참조하세요) 4. There were special pitches such as 111, 181, 200, 250, 333, 400, 500, 1000, 2000 Hz in all subjects
구체적 조작 활동을 통한 길이의 양감 형성에 관한 연구
박계순,정은실 진주교육대학교 과학교육연구소 2000 科學敎育硏究 Vol.26 No.-
The purpose of this study was to develop the program of concrete operational activity for the formation of quantitative-sense of length and to use it to teaching and learning activity, to create the environment for students' measuring length through concrete operatioanl activity and to investigate the effects of concrete operational activity on the formation of quantitative-sense of length. The subjects were 80(40 in an experimental group, 40 in a control group) students attending the 2nd grade of an elementary school in Chinju city. The major findings of this study were as follows. First, the results of the test in the domain of a unit, comparison, measuring, estimation, sum and difference of length showed that the two groups had a significant difference (p <0.05) only in the domain of estimation. Second, creating the environment for the students' measurement was helpful to develop estimation skill. Third, students formed quantitative-sense of length in the process of their own learning-plan and estimation activities. Fourth, students' ability of gathering and using useful materials for the estimation was improved by their own learning and co-operated learning. Fifth, homework for the estimation was also helpful to their attaining to the goals of learning. Sixth, the ability using mathematical knowledge in everyday life was improved naturally through developing estimation skills.
윤계순 又石大學校 1993 論文集 Vol.15 No.-
This experiment was carried out to determine the soluble (SDF), insoluble(IDF) and total dietary fiber(TDF) cotent and functional properties in some wild vegetables. The samples selected in this study were bud of aralia, braken, bamboo shoot, gajug, cham chwi, dodox and root of bellflower. On a dry matter basis, the contents of dietary fiber were 17.37-41.44% of SDF, 10.68-30.67% of IDF, 30.23-55.47% TDF and 14.10-24.73% of crude fiber. The ratio of SDF and crude fiber contents to TDF contents were 44.7-79.1% and 26.3-56.7% for 7 wild vegetables. Water holding capacity and fat absorption capacity of tested samples ranged from 7.98 to 8.71g water and 4.04 to 7.92g oil/g Acetone Dried Powder, respectively.
이개명 濟州大學校工科大學産業技術硏究所 1995 尖端技術硏究所論文集 Vol.6 No.-
Two types of Pb(Mn1/3Nb2/3)O₃+PZT ceramics had been fabricated by hot-pressing method. One had coarse grain and the other had fine grain due to Cr₂O₃ addition. These specimen were poled by applying the DC electric field in various steps. The effects of thermal aging on their piezoelectric characteristics and temperature stability of the frequency were investigated. The results are as follows. Change rates of piezoelectric characteristics by thermal aging in small-grain size specimens were greater than in large-grain size specimens. And only small-grain size specimens could have been better frequency temperature stability through thermal aging.
刈取管理가 Pearl Millet[Pennisetum typhoideum]의 刈取後 新枝의 發生, 乾物重 및 枯死에 미치는 影響
安桂洙,趙聖均 順天大學校 1984 論文集 Vol.3 No.1
This experiment was carried out to investigate the effects of the different cutting stage and cutting height on the appearance, dry weight and the death of new bud (branch and tiller) of pearl millet (Pennisetum typhoideum). The cultivar used in the present study was feed mill. The experiment was undertaken in the Experimental Livestock Farm of Suncheon National College, 1984. The results obtained are summarized as follows: 1. The frequency of the branching was increased and the rate of the tillering was decreased as the high stubble height, both of the frequency of the branching and the rate of the tillering were also decreased as the late cutting stage. 2. The yield of forage mostly depended on the tiller regardless of cutting height, and minor portion of the yield was resulted from the branch. 3. In the number of dead bud, there was no significant difference in different cutting stage, and was increased as the low stubble height.
Italian ryegrass의 秋季刈取가 牧草의再生, 炭水化物 蓄積 및 乾物收量에 미치는 影響
安桂洙 順天大學校 1983 論文集 Vol.2 No.1
本 試驗은 秋播 이탈리안라이그라스의 秋季刈取時期가 牧草의 再生, 炭水化物 蓄積 및 乾物收量에 미치는 영향을 究明하기 爲하여 圃場實驗을 遂行하였으며 結果를 要約하면 다음과 같다. 1.乾物收量은 刈取時期가 빠른 區일수록 높았고(P<0.05), 刈取時期가 제일 늦은 區는 無刈取區보다도 收量이 낮았다. 2. 乾物中 全水溶性炭水化物(TSC)의 含量은 一番刈取直後에 약간 떨어졌다가 再生長에 따라 점점 높아졌으며 二番刈取期에 가까울수록 다시 떨어졌다. 氣溫이 零下로 下降하기 1週日 前의 TSC含量水準은 그루터기, 줄기, 잎 別로 모두 共히 刈取時期가 빠른 區일수록 高水準이었으며 (P<0.01), 二番草의 乾物收量과의 사이에 相關이 成立되었다.(P<0.05) 3. 收量生長速度(CGR)는 平均氣溫이 8℃에서 下降할수록 떨어졌으며, 上昇할수록 높았다. 相對葉面積生長率(RLGR)과 純同化率(NAR)은 各區 共히 再生30日間이 가장 높았으며 再生後期에는 低下되었다. 葉面積指數(LAI)의 增大는 各區 共히 刈取後 50日까지는 빨랐으며 그 後에는 완만하였고 最大値의 節圍는 3.4∼5.8이었다. 또한 刈取後 70日까지의 LAI가 큰 區일수록 二番草의 乾物收量이 높았다. 4. 生長이 抑制되는 低溫期의 TSC, LAI, CGR, NAR 및 LWR와 二番草乾物收量과의 사이에 相關이 認定되었으며, 그 貢獻度는 LWR>LAI>TSC>NAR>CGR의 順이었다. This experiment was carried out to study the effect of the regrowth, the accumulated carbohydrate and dry matter yielding on the cutting time at the autumn in fall sowing Italian ryegrass. The results obtained were summarized as follows; 1. In dry matter yield, the plot of eariler cutting was shown the highest yielding(P<0.05), and that of the last cutting was shown the lower yielding of dry matter than that of the nonecutting plot. 2. TSC(Total water Soluble Carbohydrate) content in the dry matter slightly decreased directly after the first cutting and made gradual increase according to the regrowth of this crops and then decreased again to be coming on the second cutting time. In the TSC content levels at one week before falling to sub-zero temperature were all the high level in stubble, stem and leaf to the plot of eariler cutting(P<0.01), and there was significant correlation between the TSC content level and the dry matter yield of the second harvested grass(P<0.05). 3. CGR(Crop Growth Rate) was getting decreasing and increasing as the average temperature was falling and rising from 8℃. RLGR(Relative Leaf area Growth Rate) and NAR(Net Assimilation Rate) were both the highest during 30 days after regrowing, and lowered after regrowing in all the plots. LAI(Leaf Area Index) was shown a rapid increase during 50 days after cutting and then a slow increase in all the plots, and it's range of maximum value was 3.4-5.8. And also it was observed that dry matter yielding was high in the plots having a high LAI to 70 days after cutting. 4. It was recognized that there were significant correlation between TSC, LAI, CGR, NAR, LWR(Leaf weight Ratio) and dry matter yielding of the second harvested grass in the low temperature stage of making growth inhibition, and its degree of contribution was in order of LWR>LAI>TSC>NAR>CGR.
Pb(Zr0.53)O₃+ x[wt%]Cr₂O₃세라믹스의 공진주파수 온도안정성 및 열에이징 효과
이개명,임대관 濟州大學校工科大學産業技術硏究所 1998 尖端技術硏究所論文集 Vol.9 No.2
In this paper, Pb(??)O₃ + x[wt%]Cr₂O₃ceramics were fabricated. and thermal aging effects on the specimens were investigated. Thermal shock changed the temperature coefficients of resonant frequency of the specimens but, after thermal aging, the changing rate of their temperature coefficients due to thermal shock became very low. Thermal aging increased relative dielectirc constants of the specimen with no and a small Cr₂O₃ additives. After thermal aging, Electro-mechanical coopting factor of all specimens decreased but the specimens with Cr₂O₃ additives had the smaller temperature coefficients for resonant and antiresonant frequencies.